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-rw-r--r--drivers/media/platform/soc_camera/Kconfig27
-rw-r--r--drivers/media/platform/soc_camera/Makefile7
-rw-r--r--drivers/media/platform/soc_camera/atmel-isi.c243
-rw-r--r--drivers/media/platform/soc_camera/mx1_camera.c70
-rw-r--r--drivers/media/platform/soc_camera/mx2_camera.c592
-rw-r--r--drivers/media/platform/soc_camera/mx3_camera.c127
-rw-r--r--drivers/media/platform/soc_camera/omap1_camera.c55
-rw-r--r--drivers/media/platform/soc_camera/pxa_camera.c123
-rw-r--r--drivers/media/platform/soc_camera/rcar_vin.c1498
-rw-r--r--drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c689
-rw-r--r--drivers/media/platform/soc_camera/sh_mobile_csi2.c185
-rw-r--r--drivers/media/platform/soc_camera/soc_camera.c945
-rw-r--r--drivers/media/platform/soc_camera/soc_camera_platform.c20
-rw-r--r--drivers/media/platform/soc_camera/soc_mediabus.c52
-rw-r--r--drivers/media/platform/soc_camera/soc_scale_crop.c402
-rw-r--r--drivers/media/platform/soc_camera/soc_scale_crop.h47
16 files changed, 3412 insertions, 1670 deletions
diff --git a/drivers/media/platform/soc_camera/Kconfig b/drivers/media/platform/soc_camera/Kconfig
index cb6791e62bd..af39c466555 100644
--- a/drivers/media/platform/soc_camera/Kconfig
+++ b/drivers/media/platform/soc_camera/Kconfig
@@ -8,6 +8,9 @@ config SOC_CAMERA
over a bus like PCI or USB. For example some i2c camera connected
directly to the data bus of an SoC.
+config SOC_CAMERA_SCALE_CROP
+ tristate
+
config SOC_CAMERA_PLATFORM
tristate "platform camera support"
depends on SOC_CAMERA
@@ -27,14 +30,10 @@ config VIDEO_MX1
---help---
This is a v4l2 driver for the i.MX1/i.MXL CMOS Sensor Interface
-config MX3_VIDEO
- bool
-
config VIDEO_MX3
tristate "i.MX3x Camera Sensor Interface driver"
depends on VIDEO_DEV && MX3_IPU && SOC_CAMERA
select VIDEOBUF2_DMA_CONTIG
- select MX3_VIDEO
---help---
This is a v4l2 driver for the i.MX3x Camera Sensor Interface
@@ -45,6 +44,14 @@ config VIDEO_PXA27x
---help---
This is a v4l2 driver for the PXA27x Quick Capture Interface
+config VIDEO_RCAR_VIN
+ tristate "R-Car Video Input (VIN) support"
+ depends on VIDEO_DEV && SOC_CAMERA
+ select VIDEOBUF2_DMA_CONTIG
+ select SOC_CAMERA_SCALE_CROP
+ ---help---
+ This is a v4l2 driver for the R-Car VIN Interface
+
config VIDEO_SH_MOBILE_CSI2
tristate "SuperH Mobile MIPI CSI-2 Interface driver"
depends on VIDEO_DEV && SOC_CAMERA && HAVE_CLK
@@ -55,6 +62,7 @@ config VIDEO_SH_MOBILE_CEU
tristate "SuperH Mobile CEU Interface driver"
depends on VIDEO_DEV && SOC_CAMERA && HAS_DMA && HAVE_CLK
select VIDEOBUF2_DMA_CONTIG
+ select SOC_CAMERA_SCALE_CROP
---help---
This is a v4l2 driver for the SuperH Mobile CEU Interface
@@ -66,17 +74,12 @@ config VIDEO_OMAP1
---help---
This is a v4l2 driver for the TI OMAP1 camera interface
-config VIDEO_MX2_HOSTSUPPORT
- bool
-
config VIDEO_MX2
- tristate "i.MX27/i.MX25 Camera Sensor Interface driver"
- depends on VIDEO_DEV && SOC_CAMERA && (MACH_MX27 || (ARCH_MX25 && BROKEN))
+ tristate "i.MX27 Camera Sensor Interface driver"
+ depends on VIDEO_DEV && SOC_CAMERA && MACH_MX27
select VIDEOBUF2_DMA_CONTIG
- select VIDEO_MX2_HOSTSUPPORT
---help---
- This is a v4l2 driver for the i.MX27 and the i.MX25 Camera Sensor
- Interface
+ This is a v4l2 driver for the i.MX27 Camera Sensor Interface
config VIDEO_ATMEL_ISI
tristate "ATMEL Image Sensor Interface (ISI) support"
diff --git a/drivers/media/platform/soc_camera/Makefile b/drivers/media/platform/soc_camera/Makefile
index 136b7f8ff10..8aed26d7a64 100644
--- a/drivers/media/platform/soc_camera/Makefile
+++ b/drivers/media/platform/soc_camera/Makefile
@@ -1,4 +1,8 @@
obj-$(CONFIG_SOC_CAMERA) += soc_camera.o soc_mediabus.o
+obj-$(CONFIG_SOC_CAMERA_SCALE_CROP) += soc_scale_crop.o
+
+# a platform subdevice driver stub, allowing to support cameras by adding a
+# couple of callback functions to the board code
obj-$(CONFIG_SOC_CAMERA_PLATFORM) += soc_camera_platform.o
# soc-camera host drivers have to be linked after camera drivers
@@ -10,5 +14,4 @@ obj-$(CONFIG_VIDEO_OMAP1) += omap1_camera.o
obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o
obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o
obj-$(CONFIG_VIDEO_SH_MOBILE_CSI2) += sh_mobile_csi2.o
-
-ccflags-y += -I$(srctree)/drivers/media/i2c/soc_camera
+obj-$(CONFIG_VIDEO_RCAR_VIN) += rcar_vin.o
diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c
index d96c8c7e01d..38c723aca43 100644
--- a/drivers/media/platform/soc_camera/atmel-isi.c
+++ b/drivers/media/platform/soc_camera/atmel-isi.c
@@ -34,13 +34,6 @@
#define MIN_FRAME_RATE 15
#define FRAME_INTERVAL_MILLI_SEC (1000 / MIN_FRAME_RATE)
-/* ISI states */
-enum {
- ISI_STATE_IDLE = 0,
- ISI_STATE_READY,
- ISI_STATE_WAIT_SOF,
-};
-
/* Frame buffer descriptor */
struct fbd {
/* Physical address of the frame buffer */
@@ -75,11 +68,6 @@ struct atmel_isi {
void __iomem *regs;
int sequence;
- /* State of the ISI module in capturing mode */
- int state;
-
- /* Wait queue for waiting for SOF */
- wait_queue_head_t vsync_wq;
struct vb2_alloc_ctx *alloc_ctx;
@@ -102,7 +90,6 @@ struct atmel_isi {
struct list_head video_buffer_list;
struct frame_buffer *active;
- struct soc_camera_device *icd;
struct soc_camera_host soc_host;
};
@@ -125,16 +112,16 @@ static int configure_geometry(struct atmel_isi *isi, u32 width,
case V4L2_MBUS_FMT_Y8_1X8:
cr = ISI_CFG2_GRAYSCALE;
break;
- case V4L2_MBUS_FMT_UYVY8_2X8:
+ case V4L2_MBUS_FMT_VYUY8_2X8:
cr = ISI_CFG2_YCC_SWAP_MODE_3;
break;
- case V4L2_MBUS_FMT_VYUY8_2X8:
+ case V4L2_MBUS_FMT_UYVY8_2X8:
cr = ISI_CFG2_YCC_SWAP_MODE_2;
break;
- case V4L2_MBUS_FMT_YUYV8_2X8:
+ case V4L2_MBUS_FMT_YVYU8_2X8:
cr = ISI_CFG2_YCC_SWAP_MODE_1;
break;
- case V4L2_MBUS_FMT_YVYU8_2X8:
+ case V4L2_MBUS_FMT_YUYV8_2X8:
cr = ISI_CFG2_YCC_SWAP_DEFAULT;
break;
/* RGB, TODO */
@@ -145,6 +132,8 @@ static int configure_geometry(struct atmel_isi *isi, u32 width,
isi_writel(isi, ISI_CTRL, ISI_CTRL_DIS);
cfg2 = isi_readl(isi, ISI_CFG2);
+ /* Set YCC swap mode */
+ cfg2 &= ~ISI_CFG2_YCC_SWAP_MODE_MASK;
cfg2 |= cr;
/* Set width */
cfg2 &= ~(ISI_CFG2_IM_HSIZE_MASK);
@@ -166,7 +155,7 @@ static irqreturn_t atmel_isi_handle_streaming(struct atmel_isi *isi)
struct frame_buffer *buf = isi->active;
list_del_init(&buf->list);
- do_gettimeofday(&vb->v4l2_buf.timestamp);
+ v4l2_get_timestamp(&vb->v4l2_buf.timestamp);
vb->v4l2_buf.sequence = isi->sequence++;
vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
}
@@ -208,12 +197,6 @@ static irqreturn_t isi_interrupt(int irq, void *dev_id)
isi_writel(isi, ISI_INTDIS, ISI_CTRL_DIS);
ret = IRQ_HANDLED;
} else {
- if ((pending & ISI_SR_VSYNC) &&
- (isi->state == ISI_STATE_IDLE)) {
- isi->state = ISI_STATE_READY;
- wake_up_interruptible(&isi->vsync_wq);
- ret = IRQ_HANDLED;
- }
if (likely(pending & ISI_SR_CXFR_DONE))
ret = atmel_isi_handle_streaming(isi);
}
@@ -260,16 +243,6 @@ static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt,
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
unsigned long size;
- int ret;
-
- /* Reset ISI */
- ret = atmel_isi_wait_status(isi, WAIT_ISI_RESET);
- if (ret < 0) {
- dev_err(icd->parent, "Reset ISI timed out\n");
- return ret;
- }
- /* Disable all interrupts */
- isi_writel(isi, ISI_INTDIS, ~0UL);
size = icd->sizeimage;
@@ -367,7 +340,7 @@ static void start_dma(struct atmel_isi *isi, struct frame_buffer *buffer)
/* Check if already in a frame */
if (isi_readl(isi, ISI_STATUS) & ISI_CTRL_CDC) {
- dev_err(isi->icd->parent, "Already in frame handling.\n");
+ dev_err(isi->soc_host.icd->parent, "Already in frame handling.\n");
return;
}
@@ -375,6 +348,7 @@ static void start_dma(struct atmel_isi *isi, struct frame_buffer *buffer)
isi_writel(isi, ISI_DMA_C_CTRL, ISI_DMA_CTRL_FETCH | ISI_DMA_CTRL_DONE);
isi_writel(isi, ISI_DMA_CHER, ISI_DMA_CHSR_C_CH);
+ cfg1 &= ~ISI_CFG1_FRATE_DIV_MASK;
/* Enable linked list */
cfg1 |= isi->pdata->frate | ISI_CFG1_DISCR;
@@ -408,47 +382,31 @@ static int start_streaming(struct vb2_queue *vq, unsigned int count)
struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
-
u32 sr = 0;
int ret;
- spin_lock_irq(&isi->lock);
- isi->state = ISI_STATE_IDLE;
- /* Clear any pending SOF interrupt */
- sr = isi_readl(isi, ISI_STATUS);
- /* Enable VSYNC interrupt for SOF */
- isi_writel(isi, ISI_INTEN, ISI_SR_VSYNC);
- isi_writel(isi, ISI_CTRL, ISI_CTRL_EN);
- spin_unlock_irq(&isi->lock);
-
- dev_dbg(icd->parent, "Waiting for SOF\n");
- ret = wait_event_interruptible(isi->vsync_wq,
- isi->state != ISI_STATE_IDLE);
- if (ret)
- goto err;
-
- if (isi->state != ISI_STATE_READY) {
- ret = -EIO;
- goto err;
+ /* Reset ISI */
+ ret = atmel_isi_wait_status(isi, WAIT_ISI_RESET);
+ if (ret < 0) {
+ dev_err(icd->parent, "Reset ISI timed out\n");
+ return ret;
}
+ /* Disable all interrupts */
+ isi_writel(isi, ISI_INTDIS, ~0UL);
spin_lock_irq(&isi->lock);
- isi->state = ISI_STATE_WAIT_SOF;
- isi_writel(isi, ISI_INTDIS, ISI_SR_VSYNC);
+ /* Clear any pending interrupt */
+ sr = isi_readl(isi, ISI_STATUS);
+
if (count)
start_dma(isi, isi->active);
spin_unlock_irq(&isi->lock);
return 0;
-err:
- isi->active = NULL;
- isi->sequence = 0;
- INIT_LIST_HEAD(&isi->video_buffer_list);
- return ret;
}
/* abort streaming and wait for last buffer */
-static int stop_streaming(struct vb2_queue *vq)
+static void stop_streaming(struct vb2_queue *vq)
{
struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
@@ -475,7 +433,7 @@ static int stop_streaming(struct vb2_queue *vq)
if (time_after(jiffies, timeout)) {
dev_err(icd->parent,
"Timeout waiting for finishing codec request\n");
- return -ETIMEDOUT;
+ return;
}
/* Disable interrupts */
@@ -486,8 +444,6 @@ static int stop_streaming(struct vb2_queue *vq)
ret = atmel_isi_wait_status(isi, WAIT_ISI_DISABLE);
if (ret < 0)
dev_err(icd->parent, "Disable ISI timed out\n");
-
- return ret;
}
static struct vb2_ops isi_video_qops = {
@@ -514,6 +470,7 @@ static int isi_camera_init_videobuf(struct vb2_queue *q,
q->buf_struct_size = sizeof(struct frame_buffer);
q->ops = &isi_video_qops;
q->mem_ops = &vb2_dma_contig_memops;
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
return vb2_queue_init(q);
}
@@ -745,45 +702,49 @@ static int isi_camera_get_formats(struct soc_camera_device *icd,
return formats;
}
-/* Called with .video_lock held */
static int isi_camera_add_device(struct soc_camera_device *icd)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ dev_dbg(icd->parent, "Atmel ISI Camera driver attached to camera %d\n",
+ icd->devnum);
+
+ return 0;
+}
+
+static void isi_camera_remove_device(struct soc_camera_device *icd)
+{
+ dev_dbg(icd->parent, "Atmel ISI Camera driver detached from camera %d\n",
+ icd->devnum);
+}
+
+/* Called with .host_lock held */
+static int isi_camera_clock_start(struct soc_camera_host *ici)
+{
struct atmel_isi *isi = ici->priv;
int ret;
- if (isi->icd)
- return -EBUSY;
-
- ret = clk_enable(isi->pclk);
+ ret = clk_prepare_enable(isi->pclk);
if (ret)
return ret;
- ret = clk_enable(isi->mck);
- if (ret) {
- clk_disable(isi->pclk);
- return ret;
+ if (!IS_ERR(isi->mck)) {
+ ret = clk_prepare_enable(isi->mck);
+ if (ret) {
+ clk_disable_unprepare(isi->pclk);
+ return ret;
+ }
}
- isi->icd = icd;
- dev_dbg(icd->parent, "Atmel ISI Camera driver attached to camera %d\n",
- icd->devnum);
return 0;
}
-/* Called with .video_lock held */
-static void isi_camera_remove_device(struct soc_camera_device *icd)
+
+/* Called with .host_lock held */
+static void isi_camera_clock_stop(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct atmel_isi *isi = ici->priv;
- BUG_ON(icd != isi->icd);
-
- clk_disable(isi->mck);
- clk_disable(isi->pclk);
- isi->icd = NULL;
-
- dev_dbg(icd->parent, "Atmel ISI Camera driver detached from camera %d\n",
- icd->devnum);
+ if (!IS_ERR(isi->mck))
+ clk_disable_unprepare(isi->mck);
+ clk_disable_unprepare(isi->pclk);
}
static unsigned int isi_camera_poll(struct file *file, poll_table *pt)
@@ -887,6 +848,8 @@ static struct soc_camera_host_ops isi_soc_camera_host_ops = {
.owner = THIS_MODULE,
.add = isi_camera_add_device,
.remove = isi_camera_remove_device,
+ .clock_start = isi_camera_clock_start,
+ .clock_stop = isi_camera_clock_stop,
.set_fmt = isi_camera_set_fmt,
.try_fmt = isi_camera_try_fmt,
.get_formats = isi_camera_get_formats,
@@ -903,7 +866,6 @@ static int atmel_isi_remove(struct platform_device *pdev)
struct atmel_isi *isi = container_of(soc_host,
struct atmel_isi, soc_host);
- free_irq(isi->irq, isi);
soc_camera_host_unregister(soc_host);
vb2_dma_contig_cleanup_ctx(isi->alloc_ctx);
dma_free_coherent(&pdev->dev,
@@ -911,13 +873,6 @@ static int atmel_isi_remove(struct platform_device *pdev)
isi->p_fb_descriptors,
isi->fb_descriptors_phys);
- iounmap(isi->regs);
- clk_unprepare(isi->mck);
- clk_put(isi->mck);
- clk_unprepare(isi->pclk);
- clk_put(isi->pclk);
- kfree(isi);
-
return 0;
}
@@ -925,7 +880,6 @@ static int atmel_isi_probe(struct platform_device *pdev)
{
unsigned int irq;
struct atmel_isi *isi;
- struct clk *pclk;
struct resource *regs;
int ret, i;
struct device *dev = &pdev->dev;
@@ -933,64 +887,50 @@ static int atmel_isi_probe(struct platform_device *pdev)
struct isi_platform_data *pdata;
pdata = dev->platform_data;
- if (!pdata || !pdata->data_width_flags || !pdata->mck_hz) {
+ if (!pdata || !pdata->data_width_flags) {
dev_err(&pdev->dev,
"No config available for Atmel ISI\n");
return -EINVAL;
}
- regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!regs)
- return -ENXIO;
-
- pclk = clk_get(&pdev->dev, "isi_clk");
- if (IS_ERR(pclk))
- return PTR_ERR(pclk);
-
- ret = clk_prepare(pclk);
- if (ret)
- goto err_clk_prepare_pclk;
-
- isi = kzalloc(sizeof(struct atmel_isi), GFP_KERNEL);
+ isi = devm_kzalloc(&pdev->dev, sizeof(struct atmel_isi), GFP_KERNEL);
if (!isi) {
- ret = -ENOMEM;
dev_err(&pdev->dev, "Can't allocate interface!\n");
- goto err_alloc_isi;
+ return -ENOMEM;
}
- isi->pclk = pclk;
+ isi->pclk = devm_clk_get(&pdev->dev, "isi_clk");
+ if (IS_ERR(isi->pclk))
+ return PTR_ERR(isi->pclk);
+
isi->pdata = pdata;
isi->active = NULL;
spin_lock_init(&isi->lock);
- init_waitqueue_head(&isi->vsync_wq);
INIT_LIST_HEAD(&isi->video_buffer_list);
INIT_LIST_HEAD(&isi->dma_desc_head);
- /* Get ISI_MCK, provided by programmable clock or external clock */
- isi->mck = clk_get(dev, "isi_mck");
- if (IS_ERR(isi->mck)) {
- dev_err(dev, "Failed to get isi_mck\n");
- ret = PTR_ERR(isi->mck);
- goto err_clk_get;
+ /* ISI_MCK is the sensor master clock. It should be handled by the
+ * sensor driver directly, as the ISI has no use for that clock. Make
+ * the clock optional here while platforms transition to the correct
+ * model.
+ */
+ isi->mck = devm_clk_get(dev, "isi_mck");
+ if (!IS_ERR(isi->mck)) {
+ /* Set ISI_MCK's frequency, it should be faster than pixel
+ * clock.
+ */
+ ret = clk_set_rate(isi->mck, pdata->mck_hz);
+ if (ret < 0)
+ return ret;
}
- ret = clk_prepare(isi->mck);
- if (ret)
- goto err_clk_prepare_mck;
-
- /* Set ISI_MCK's frequency, it should be faster than pixel clock */
- ret = clk_set_rate(isi->mck, pdata->mck_hz);
- if (ret < 0)
- goto err_set_mck_rate;
-
isi->p_fb_descriptors = dma_alloc_coherent(&pdev->dev,
sizeof(struct fbd) * MAX_BUFFER_NUM,
&isi->fb_descriptors_phys,
GFP_KERNEL);
if (!isi->p_fb_descriptors) {
- ret = -ENOMEM;
dev_err(&pdev->dev, "Can't allocate descriptors!\n");
- goto err_alloc_descriptors;
+ return -ENOMEM;
}
for (i = 0; i < MAX_BUFFER_NUM; i++) {
@@ -1006,9 +946,10 @@ static int atmel_isi_probe(struct platform_device *pdev)
goto err_alloc_ctx;
}
- isi->regs = ioremap(regs->start, resource_size(regs));
- if (!isi->regs) {
- ret = -ENOMEM;
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ isi->regs = devm_ioremap_resource(&pdev->dev, regs);
+ if (IS_ERR(isi->regs)) {
+ ret = PTR_ERR(isi->regs);
goto err_ioremap;
}
@@ -1020,12 +961,12 @@ static int atmel_isi_probe(struct platform_device *pdev)
isi_writel(isi, ISI_CTRL, ISI_CTRL_DIS);
irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
+ if (IS_ERR_VALUE(irq)) {
ret = irq;
goto err_req_irq;
}
- ret = request_irq(irq, isi_interrupt, 0, "isi", isi);
+ ret = devm_request_irq(&pdev->dev, irq, isi_interrupt, 0, "isi", isi);
if (ret) {
dev_err(&pdev->dev, "Unable to request irq %d\n", irq);
goto err_req_irq;
@@ -1047,9 +988,7 @@ static int atmel_isi_probe(struct platform_device *pdev)
return 0;
err_register_soc_camera_host:
- free_irq(isi->irq, isi);
err_req_irq:
- iounmap(isi->regs);
err_ioremap:
vb2_dma_contig_cleanup_ctx(isi->alloc_ctx);
err_alloc_ctx:
@@ -1057,23 +996,11 @@ err_alloc_ctx:
sizeof(struct fbd) * MAX_BUFFER_NUM,
isi->p_fb_descriptors,
isi->fb_descriptors_phys);
-err_alloc_descriptors:
-err_set_mck_rate:
- clk_unprepare(isi->mck);
-err_clk_prepare_mck:
- clk_put(isi->mck);
-err_clk_get:
- kfree(isi);
-err_alloc_isi:
- clk_unprepare(pclk);
-err_clk_prepare_pclk:
- clk_put(pclk);
return ret;
}
static struct platform_driver atmel_isi_driver = {
- .probe = atmel_isi_probe,
.remove = atmel_isi_remove,
.driver = {
.name = "atmel_isi",
@@ -1081,17 +1008,7 @@ static struct platform_driver atmel_isi_driver = {
},
};
-static int __init atmel_isi_init_module(void)
-{
- return platform_driver_probe(&atmel_isi_driver, &atmel_isi_probe);
-}
-
-static void __exit atmel_isi_exit(void)
-{
- platform_driver_unregister(&atmel_isi_driver);
-}
-module_init(atmel_isi_init_module);
-module_exit(atmel_isi_exit);
+module_platform_driver_probe(atmel_isi_driver, atmel_isi_probe);
MODULE_AUTHOR("Josh Wu <josh.wu@atmel.com>");
MODULE_DESCRIPTION("The V4L2 driver for Atmel Linux");
diff --git a/drivers/media/platform/soc_camera/mx1_camera.c b/drivers/media/platform/soc_camera/mx1_camera.c
index 032b8c9097f..fea3e61476a 100644
--- a/drivers/media/platform/soc_camera/mx1_camera.c
+++ b/drivers/media/platform/soc_camera/mx1_camera.c
@@ -26,7 +26,6 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
-#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/slab.h>
@@ -105,7 +104,6 @@ struct mx1_buffer {
*/
struct mx1_camera_dev {
struct soc_camera_host soc_host;
- struct soc_camera_device *icd;
struct mx1_camera_pdata *pdata;
struct mx1_buffer *active;
struct resource *res;
@@ -221,7 +219,7 @@ out:
static int mx1_camera_setup_dma(struct mx1_camera_dev *pcdev)
{
struct videobuf_buffer *vbuf = &pcdev->active->vb;
- struct device *dev = pcdev->icd->parent;
+ struct device *dev = pcdev->soc_host.icd->parent;
int ret;
if (unlikely(!pcdev->active)) {
@@ -307,7 +305,7 @@ static void mx1_camera_wakeup(struct mx1_camera_dev *pcdev,
/* _init is used to debug races, see comment in mx1_camera_reqbufs() */
list_del_init(&vb->queue);
vb->state = VIDEOBUF_DONE;
- do_gettimeofday(&vb->ts);
+ v4l2_get_timestamp(&vb->ts);
vb->field_count++;
wake_up(&vb->done);
@@ -332,7 +330,7 @@ static void mx1_camera_wakeup(struct mx1_camera_dev *pcdev,
static void mx1_camera_dma_irq(int channel, void *data)
{
struct mx1_camera_dev *pcdev = data;
- struct device *dev = pcdev->icd->parent;
+ struct device *dev = pcdev->soc_host.icd->parent;
struct mx1_buffer *buf;
struct videobuf_buffer *vb;
unsigned long flags;
@@ -373,7 +371,7 @@ static void mx1_camera_init_videobuf(struct videobuf_queue *q,
videobuf_queue_dma_contig_init(q, &mx1_videobuf_ops, icd->parent,
&pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE,
V4L2_FIELD_NONE,
- sizeof(struct mx1_buffer), icd, &icd->video_lock);
+ sizeof(struct mx1_buffer), icd, &ici->host_lock);
}
static int mclk_get_divisor(struct mx1_camera_dev *pcdev)
@@ -390,7 +388,7 @@ static int mclk_get_divisor(struct mx1_camera_dev *pcdev)
*/
div = (lcdclk + 2 * mclk - 1) / (2 * mclk) - 1;
- dev_dbg(pcdev->icd->parent,
+ dev_dbg(pcdev->soc_host.icd->parent,
"System clock %lukHz, target freq %dkHz, divisor %lu\n",
lcdclk / 1000, mclk / 1000, div);
@@ -401,7 +399,7 @@ static void mx1_camera_activate(struct mx1_camera_dev *pcdev)
{
unsigned int csicr1 = CSICR1_EN;
- dev_dbg(pcdev->icd->parent, "Activate device\n");
+ dev_dbg(pcdev->soc_host.v4l2_dev.dev, "Activate device\n");
clk_prepare_enable(pcdev->clk);
@@ -417,7 +415,7 @@ static void mx1_camera_activate(struct mx1_camera_dev *pcdev)
static void mx1_camera_deactivate(struct mx1_camera_dev *pcdev)
{
- dev_dbg(pcdev->icd->parent, "Deactivate device\n");
+ dev_dbg(pcdev->soc_host.v4l2_dev.dev, "Deactivate device\n");
/* Disable all CSI interface */
__raw_writel(0x00, pcdev->base + CSICR1);
@@ -425,36 +423,38 @@ static void mx1_camera_deactivate(struct mx1_camera_dev *pcdev)
clk_disable_unprepare(pcdev->clk);
}
+static int mx1_camera_add_device(struct soc_camera_device *icd)
+{
+ dev_info(icd->parent, "MX1 Camera driver attached to camera %d\n",
+ icd->devnum);
+
+ return 0;
+}
+
+static void mx1_camera_remove_device(struct soc_camera_device *icd)
+{
+ dev_info(icd->parent, "MX1 Camera driver detached from camera %d\n",
+ icd->devnum);
+}
+
/*
* The following two functions absolutely depend on the fact, that
* there can be only one camera on i.MX1/i.MXL camera sensor interface
*/
-static int mx1_camera_add_device(struct soc_camera_device *icd)
+static int mx1_camera_clock_start(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx1_camera_dev *pcdev = ici->priv;
- if (pcdev->icd)
- return -EBUSY;
-
- dev_info(icd->parent, "MX1 Camera driver attached to camera %d\n",
- icd->devnum);
-
mx1_camera_activate(pcdev);
- pcdev->icd = icd;
-
return 0;
}
-static void mx1_camera_remove_device(struct soc_camera_device *icd)
+static void mx1_camera_clock_stop(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx1_camera_dev *pcdev = ici->priv;
unsigned int csicr1;
- BUG_ON(icd != pcdev->icd);
-
/* disable interrupts */
csicr1 = __raw_readl(pcdev->base + CSICR1) & ~CSI_IRQ_MASK;
__raw_writel(csicr1, pcdev->base + CSICR1);
@@ -462,12 +462,7 @@ static void mx1_camera_remove_device(struct soc_camera_device *icd)
/* Stop DMA engine */
imx_dma_disable(pcdev->dma_chan);
- dev_info(icd->parent, "MX1 Camera driver detached from camera %d\n",
- icd->devnum);
-
mx1_camera_deactivate(pcdev);
-
- pcdev->icd = NULL;
}
static int mx1_camera_set_bus_param(struct soc_camera_device *icd)
@@ -680,6 +675,8 @@ static struct soc_camera_host_ops mx1_soc_camera_host_ops = {
.owner = THIS_MODULE,
.add = mx1_camera_add_device,
.remove = mx1_camera_remove_device,
+ .clock_start = mx1_camera_clock_start,
+ .clock_stop = mx1_camera_clock_stop,
.set_bus_param = mx1_camera_set_bus_param,
.set_fmt = mx1_camera_set_fmt,
.try_fmt = mx1_camera_try_fmt,
@@ -777,7 +774,7 @@ static int __init mx1_camera_probe(struct platform_device *pdev)
/* request irq */
err = claim_fiq(&fh);
if (err) {
- dev_err(&pdev->dev, "Camera interrupt register failed \n");
+ dev_err(&pdev->dev, "Camera interrupt register failed\n");
goto exit_free_dma;
}
@@ -854,24 +851,13 @@ static int __exit mx1_camera_remove(struct platform_device *pdev)
}
static struct platform_driver mx1_camera_driver = {
- .driver = {
+ .driver = {
.name = DRIVER_NAME,
},
.remove = __exit_p(mx1_camera_remove),
};
-static int __init mx1_camera_init(void)
-{
- return platform_driver_probe(&mx1_camera_driver, mx1_camera_probe);
-}
-
-static void __exit mx1_camera_exit(void)
-{
- return platform_driver_unregister(&mx1_camera_driver);
-}
-
-module_init(mx1_camera_init);
-module_exit(mx1_camera_exit);
+module_platform_driver_probe(mx1_camera_driver, mx1_camera_probe);
MODULE_DESCRIPTION("i.MX1/i.MXL SoC Camera Host driver");
MODULE_AUTHOR("Paulius Zaleckas <paulius.zaleckas@teltonika.lt>");
diff --git a/drivers/media/platform/soc_camera/mx2_camera.c b/drivers/media/platform/soc_camera/mx2_camera.c
index 8bda2c908ab..b40bc2e5ba4 100644
--- a/drivers/media/platform/soc_camera/mx2_camera.c
+++ b/drivers/media/platform/soc_camera/mx2_camera.c
@@ -1,5 +1,5 @@
/*
- * V4L2 Driver for i.MX27/i.MX25 camera host
+ * V4L2 Driver for i.MX27 camera host
*
* Copyright (C) 2008, Sascha Hauer, Pengutronix
* Copyright (C) 2010, Baruch Siach, Orex Computed Radiography
@@ -28,7 +28,6 @@
#include <linux/time.h>
#include <linux/device.h>
#include <linux/platform_device.h>
-#include <linux/mutex.h>
#include <linux/clk.h>
#include <media/v4l2-common.h>
@@ -64,9 +63,7 @@
#define CSICR1_RF_OR_INTEN (1 << 24)
#define CSICR1_STATFF_LEVEL (3 << 22)
#define CSICR1_STATFF_INTEN (1 << 21)
-#define CSICR1_RXFF_LEVEL(l) (((l) & 3) << 19) /* MX27 */
-#define CSICR1_FB2_DMA_INTEN (1 << 20) /* MX25 */
-#define CSICR1_FB1_DMA_INTEN (1 << 19) /* MX25 */
+#define CSICR1_RXFF_LEVEL(l) (((l) & 3) << 19)
#define CSICR1_RXFF_INTEN (1 << 18)
#define CSICR1_SOF_POL (1 << 17)
#define CSICR1_SOF_INTEN (1 << 16)
@@ -88,45 +85,15 @@
#define SHIFT_RXFF_LEVEL 19
#define SHIFT_MCLKDIV 12
-/* control reg 3 */
-#define CSICR3_FRMCNT (0xFFFF << 16)
-#define CSICR3_FRMCNT_RST (1 << 15)
-#define CSICR3_DMA_REFLASH_RFF (1 << 14)
-#define CSICR3_DMA_REFLASH_SFF (1 << 13)
-#define CSICR3_DMA_REQ_EN_RFF (1 << 12)
-#define CSICR3_DMA_REQ_EN_SFF (1 << 11)
-#define CSICR3_RXFF_LEVEL(l) (((l) & 7) << 4) /* MX25 */
-#define CSICR3_CSI_SUP (1 << 3)
-#define CSICR3_ZERO_PACK_EN (1 << 2)
-#define CSICR3_ECC_INT_EN (1 << 1)
-#define CSICR3_ECC_AUTO_EN (1 << 0)
-
#define SHIFT_FRMCNT 16
-/* csi status reg */
-#define CSISR_SFF_OR_INT (1 << 25)
-#define CSISR_RFF_OR_INT (1 << 24)
-#define CSISR_STATFF_INT (1 << 21)
-#define CSISR_DMA_TSF_FB2_INT (1 << 20) /* MX25 */
-#define CSISR_DMA_TSF_FB1_INT (1 << 19) /* MX25 */
-#define CSISR_RXFF_INT (1 << 18)
-#define CSISR_EOF_INT (1 << 17)
-#define CSISR_SOF_INT (1 << 16)
-#define CSISR_F2_INT (1 << 15)
-#define CSISR_F1_INT (1 << 14)
-#define CSISR_COF_INT (1 << 13)
-#define CSISR_ECC_INT (1 << 1)
-#define CSISR_DRDY (1 << 0)
-
#define CSICR1 0x00
#define CSICR2 0x04
-#define CSISR_IMX25 0x18
-#define CSISR_IMX27 0x08
+#define CSISR 0x08
#define CSISTATFIFO 0x0c
#define CSIRFIFO 0x10
#define CSIRXCNT 0x14
-#define CSICR3_IMX25 0x08
-#define CSICR3_IMX27 0x1c
+#define CSICR3 0x1c
#define CSIDMASA_STATFIFO 0x20
#define CSIDMATA_STATFIFO 0x24
#define CSIDMASA_FB1 0x28
@@ -249,12 +216,6 @@ struct mx2_fmt_cfg {
struct mx2_prp_cfg cfg;
};
-enum mx2_buffer_state {
- MX2_STATE_QUEUED,
- MX2_STATE_ACTIVE,
- MX2_STATE_DONE,
-};
-
struct mx2_buf_internal {
struct list_head queue;
int bufnum;
@@ -265,19 +226,16 @@ struct mx2_buf_internal {
struct mx2_buffer {
/* common v4l buffer stuff -- must be first */
struct vb2_buffer vb;
- enum mx2_buffer_state state;
struct mx2_buf_internal internal;
};
enum mx2_camera_type {
- IMX25_CAMERA,
IMX27_CAMERA,
};
struct mx2_camera_dev {
struct device *dev;
struct soc_camera_host soc_host;
- struct soc_camera_device *icd;
struct clk *clk_emma_ahb, *clk_emma_ipg;
struct clk *clk_csi_ahb, *clk_csi_per;
@@ -298,8 +256,6 @@ struct mx2_camera_dev {
struct mx2_buffer *fb2_active;
u32 csicr1;
- u32 reg_csisr;
- u32 reg_csicr3;
enum mx2_camera_type devtype;
struct mx2_buf_internal buf_discard[2];
@@ -315,9 +271,6 @@ struct mx2_camera_dev {
static struct platform_device_id mx2_camera_devtype[] = {
{
- .name = "imx25-camera",
- .driver_data = IMX25_CAMERA,
- }, {
.name = "imx27-camera",
.driver_data = IMX27_CAMERA,
}, {
@@ -326,16 +279,6 @@ static struct platform_device_id mx2_camera_devtype[] = {
};
MODULE_DEVICE_TABLE(platform, mx2_camera_devtype);
-static inline int is_imx25_camera(struct mx2_camera_dev *pcdev)
-{
- return pcdev->devtype == IMX25_CAMERA;
-}
-
-static inline int is_imx27_camera(struct mx2_camera_dev *pcdev)
-{
- return pcdev->devtype == IMX27_CAMERA;
-}
-
static struct mx2_buffer *mx2_ibuf_to_buf(struct mx2_buf_internal *int_buf)
{
return container_of(int_buf, struct mx2_buffer, internal);
@@ -345,7 +288,7 @@ static struct mx2_fmt_cfg mx27_emma_prp_table[] = {
/*
* This is a generic configuration which is valid for most
* prp input-output format combinations.
- * We set the incomming and outgoing pixelformat to a
+ * We set the incoming and outgoing pixelformat to a
* 16 Bit wide format and adjust the bytesperline
* accordingly. With this configuration the inputdata
* will not be changed by the emma and could be any type
@@ -450,8 +393,8 @@ static void mx27_update_emma_buf(struct mx2_camera_dev *pcdev,
writel(phys, pcdev->base_emma +
PRP_DEST_Y_PTR - 0x14 * bufnum);
if (prp->out_fmt == V4L2_PIX_FMT_YUV420) {
- u32 imgsize = pcdev->icd->user_height *
- pcdev->icd->user_width;
+ u32 imgsize = pcdev->soc_host.icd->user_height *
+ pcdev->soc_host.icd->user_width;
writel(phys + imgsize, pcdev->base_emma +
PRP_DEST_CB_PTR - 0x14 * bufnum);
@@ -463,37 +406,36 @@ static void mx27_update_emma_buf(struct mx2_camera_dev *pcdev,
static void mx2_camera_deactivate(struct mx2_camera_dev *pcdev)
{
- unsigned long flags;
-
clk_disable_unprepare(pcdev->clk_csi_ahb);
clk_disable_unprepare(pcdev->clk_csi_per);
writel(0, pcdev->base_csi + CSICR1);
- if (is_imx27_camera(pcdev)) {
- writel(0, pcdev->base_emma + PRP_CNTL);
- } else if (is_imx25_camera(pcdev)) {
- spin_lock_irqsave(&pcdev->lock, flags);
- pcdev->fb1_active = NULL;
- pcdev->fb2_active = NULL;
- writel(0, pcdev->base_csi + CSIDMASA_FB1);
- writel(0, pcdev->base_csi + CSIDMASA_FB2);
- spin_unlock_irqrestore(&pcdev->lock, flags);
- }
+ writel(0, pcdev->base_emma + PRP_CNTL);
+}
+
+static int mx2_camera_add_device(struct soc_camera_device *icd)
+{
+ dev_info(icd->parent, "Camera driver attached to camera %d\n",
+ icd->devnum);
+
+ return 0;
+}
+
+static void mx2_camera_remove_device(struct soc_camera_device *icd)
+{
+ dev_info(icd->parent, "Camera driver detached from camera %d\n",
+ icd->devnum);
}
/*
* The following two functions absolutely depend on the fact, that
* there can be only one camera on mx2 camera sensor interface
*/
-static int mx2_camera_add_device(struct soc_camera_device *icd)
+static int mx2_camera_clock_start(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx2_camera_dev *pcdev = ici->priv;
int ret;
u32 csicr1;
- if (pcdev->icd)
- return -EBUSY;
-
ret = clk_prepare_enable(pcdev->clk_csi_ahb);
if (ret < 0)
return ret;
@@ -502,21 +444,14 @@ static int mx2_camera_add_device(struct soc_camera_device *icd)
if (ret < 0)
goto exit_csi_ahb;
- csicr1 = CSICR1_MCLKEN;
-
- if (is_imx27_camera(pcdev))
- csicr1 |= CSICR1_PRP_IF_EN | CSICR1_FCC |
- CSICR1_RXFF_LEVEL(0);
+ csicr1 = CSICR1_MCLKEN | CSICR1_PRP_IF_EN | CSICR1_FCC |
+ CSICR1_RXFF_LEVEL(0);
pcdev->csicr1 = csicr1;
writel(pcdev->csicr1, pcdev->base_csi + CSICR1);
- pcdev->icd = icd;
pcdev->frame_count = 0;
- dev_info(icd->parent, "Camera driver attached to camera %d\n",
- icd->devnum);
-
return 0;
exit_csi_ahb:
@@ -525,78 +460,11 @@ exit_csi_ahb:
return ret;
}
-static void mx2_camera_remove_device(struct soc_camera_device *icd)
+static void mx2_camera_clock_stop(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx2_camera_dev *pcdev = ici->priv;
- BUG_ON(icd != pcdev->icd);
-
- dev_info(icd->parent, "Camera driver detached from camera %d\n",
- icd->devnum);
-
mx2_camera_deactivate(pcdev);
-
- pcdev->icd = NULL;
-}
-
-static void mx25_camera_frame_done(struct mx2_camera_dev *pcdev, int fb,
- int state)
-{
- struct vb2_buffer *vb;
- struct mx2_buffer *buf;
- struct mx2_buffer **fb_active = fb == 1 ? &pcdev->fb1_active :
- &pcdev->fb2_active;
- u32 fb_reg = fb == 1 ? CSIDMASA_FB1 : CSIDMASA_FB2;
- unsigned long flags;
-
- spin_lock_irqsave(&pcdev->lock, flags);
-
- if (*fb_active == NULL)
- goto out;
-
- vb = &(*fb_active)->vb;
- dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%p %lu\n", __func__,
- vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
-
- do_gettimeofday(&vb->v4l2_buf.timestamp);
- vb->v4l2_buf.sequence++;
- vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
-
- if (list_empty(&pcdev->capture)) {
- buf = NULL;
- writel(0, pcdev->base_csi + fb_reg);
- } else {
- buf = list_first_entry(&pcdev->capture, struct mx2_buffer,
- internal.queue);
- vb = &buf->vb;
- list_del(&buf->internal.queue);
- buf->state = MX2_STATE_ACTIVE;
- writel(vb2_dma_contig_plane_dma_addr(vb, 0),
- pcdev->base_csi + fb_reg);
- }
-
- *fb_active = buf;
-
-out:
- spin_unlock_irqrestore(&pcdev->lock, flags);
-}
-
-static irqreturn_t mx25_camera_irq(int irq_csi, void *data)
-{
- struct mx2_camera_dev *pcdev = data;
- u32 status = readl(pcdev->base_csi + pcdev->reg_csisr);
-
- if (status & CSISR_DMA_TSF_FB1_INT)
- mx25_camera_frame_done(pcdev, 1, MX2_STATE_DONE);
- else if (status & CSISR_DMA_TSF_FB2_INT)
- mx25_camera_frame_done(pcdev, 2, MX2_STATE_DONE);
-
- /* FIXME: handle CSISR_RFF_OR_INT */
-
- writel(status, pcdev->base_csi + pcdev->reg_csisr);
-
- return IRQ_HANDLED;
}
/*
@@ -676,97 +544,8 @@ static void mx2_videobuf_queue(struct vb2_buffer *vb)
spin_lock_irqsave(&pcdev->lock, flags);
- buf->state = MX2_STATE_QUEUED;
list_add_tail(&buf->internal.queue, &pcdev->capture);
- if (is_imx25_camera(pcdev)) {
- u32 csicr3, dma_inten = 0;
-
- if (pcdev->fb1_active == NULL) {
- writel(vb2_dma_contig_plane_dma_addr(vb, 0),
- pcdev->base_csi + CSIDMASA_FB1);
- pcdev->fb1_active = buf;
- dma_inten = CSICR1_FB1_DMA_INTEN;
- } else if (pcdev->fb2_active == NULL) {
- writel(vb2_dma_contig_plane_dma_addr(vb, 0),
- pcdev->base_csi + CSIDMASA_FB2);
- pcdev->fb2_active = buf;
- dma_inten = CSICR1_FB2_DMA_INTEN;
- }
-
- if (dma_inten) {
- list_del(&buf->internal.queue);
- buf->state = MX2_STATE_ACTIVE;
-
- csicr3 = readl(pcdev->base_csi + pcdev->reg_csicr3);
-
- /* Reflash DMA */
- writel(csicr3 | CSICR3_DMA_REFLASH_RFF,
- pcdev->base_csi + pcdev->reg_csicr3);
-
- /* clear & enable interrupts */
- writel(dma_inten, pcdev->base_csi + pcdev->reg_csisr);
- pcdev->csicr1 |= dma_inten;
- writel(pcdev->csicr1, pcdev->base_csi + CSICR1);
-
- /* enable DMA */
- csicr3 |= CSICR3_DMA_REQ_EN_RFF | CSICR3_RXFF_LEVEL(1);
- writel(csicr3, pcdev->base_csi + pcdev->reg_csicr3);
- }
- }
-
- spin_unlock_irqrestore(&pcdev->lock, flags);
-}
-
-static void mx2_videobuf_release(struct vb2_buffer *vb)
-{
- struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
- struct mx2_camera_dev *pcdev = ici->priv;
- struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb);
- unsigned long flags;
-
-#ifdef DEBUG
- dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__,
- vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
-
- switch (buf->state) {
- case MX2_STATE_ACTIVE:
- dev_info(icd->parent, "%s (active)\n", __func__);
- break;
- case MX2_STATE_QUEUED:
- dev_info(icd->parent, "%s (queued)\n", __func__);
- break;
- default:
- dev_info(icd->parent, "%s (unknown) %d\n", __func__,
- buf->state);
- break;
- }
-#endif
-
- /*
- * Terminate only queued but inactive buffers. Active buffers are
- * released when they become inactive after videobuf_waiton().
- *
- * FIXME: implement forced termination of active buffers for mx27 and
- * mx27 eMMA, so that the user won't get stuck in an uninterruptible
- * state. This requires a specific handling for each of the these DMA
- * types.
- */
-
- spin_lock_irqsave(&pcdev->lock, flags);
- if (is_imx25_camera(pcdev) && buf->state == MX2_STATE_ACTIVE) {
- if (pcdev->fb1_active == buf) {
- pcdev->csicr1 &= ~CSICR1_FB1_DMA_INTEN;
- writel(0, pcdev->base_csi + CSIDMASA_FB1);
- pcdev->fb1_active = NULL;
- } else if (pcdev->fb2_active == buf) {
- pcdev->csicr1 &= ~CSICR1_FB2_DMA_INTEN;
- writel(0, pcdev->base_csi + CSIDMASA_FB2);
- pcdev->fb2_active = NULL;
- }
- writel(pcdev->csicr1, pcdev->base_csi + CSICR1);
- }
spin_unlock_irqrestore(&pcdev->lock, flags);
}
@@ -877,96 +656,92 @@ static int mx2_start_streaming(struct vb2_queue *q, unsigned int count)
struct mx2_buffer *buf;
unsigned long phys;
int bytesperline;
+ unsigned long flags;
- if (is_imx27_camera(pcdev)) {
- unsigned long flags;
- if (count < 2)
- return -EINVAL;
+ if (count < 2)
+ return -ENOBUFS;
- spin_lock_irqsave(&pcdev->lock, flags);
+ spin_lock_irqsave(&pcdev->lock, flags);
- buf = list_first_entry(&pcdev->capture, struct mx2_buffer,
- internal.queue);
- buf->internal.bufnum = 0;
- vb = &buf->vb;
- buf->state = MX2_STATE_ACTIVE;
+ buf = list_first_entry(&pcdev->capture, struct mx2_buffer,
+ internal.queue);
+ buf->internal.bufnum = 0;
+ vb = &buf->vb;
- phys = vb2_dma_contig_plane_dma_addr(vb, 0);
- mx27_update_emma_buf(pcdev, phys, buf->internal.bufnum);
- list_move_tail(pcdev->capture.next, &pcdev->active_bufs);
+ phys = vb2_dma_contig_plane_dma_addr(vb, 0);
+ mx27_update_emma_buf(pcdev, phys, buf->internal.bufnum);
+ list_move_tail(pcdev->capture.next, &pcdev->active_bufs);
- buf = list_first_entry(&pcdev->capture, struct mx2_buffer,
- internal.queue);
- buf->internal.bufnum = 1;
- vb = &buf->vb;
- buf->state = MX2_STATE_ACTIVE;
+ buf = list_first_entry(&pcdev->capture, struct mx2_buffer,
+ internal.queue);
+ buf->internal.bufnum = 1;
+ vb = &buf->vb;
- phys = vb2_dma_contig_plane_dma_addr(vb, 0);
- mx27_update_emma_buf(pcdev, phys, buf->internal.bufnum);
- list_move_tail(pcdev->capture.next, &pcdev->active_bufs);
-
- bytesperline = soc_mbus_bytes_per_line(icd->user_width,
- icd->current_fmt->host_fmt);
- if (bytesperline < 0) {
- spin_unlock_irqrestore(&pcdev->lock, flags);
- return bytesperline;
- }
+ phys = vb2_dma_contig_plane_dma_addr(vb, 0);
+ mx27_update_emma_buf(pcdev, phys, buf->internal.bufnum);
+ list_move_tail(pcdev->capture.next, &pcdev->active_bufs);
- /*
- * I didn't manage to properly enable/disable the prp
- * on a per frame basis during running transfers,
- * thus we allocate a buffer here and use it to
- * discard frames when no buffer is available.
- * Feel free to work on this ;)
- */
- pcdev->discard_size = icd->user_height * bytesperline;
- pcdev->discard_buffer = dma_alloc_coherent(ici->v4l2_dev.dev,
- pcdev->discard_size, &pcdev->discard_buffer_dma,
- GFP_KERNEL);
- if (!pcdev->discard_buffer) {
- spin_unlock_irqrestore(&pcdev->lock, flags);
- return -ENOMEM;
- }
+ bytesperline = soc_mbus_bytes_per_line(icd->user_width,
+ icd->current_fmt->host_fmt);
+ if (bytesperline < 0) {
+ spin_unlock_irqrestore(&pcdev->lock, flags);
+ return bytesperline;
+ }
+
+ /*
+ * I didn't manage to properly enable/disable the prp
+ * on a per frame basis during running transfers,
+ * thus we allocate a buffer here and use it to
+ * discard frames when no buffer is available.
+ * Feel free to work on this ;)
+ */
+ pcdev->discard_size = icd->user_height * bytesperline;
+ pcdev->discard_buffer = dma_alloc_coherent(ici->v4l2_dev.dev,
+ pcdev->discard_size,
+ &pcdev->discard_buffer_dma, GFP_ATOMIC);
+ if (!pcdev->discard_buffer) {
+ spin_unlock_irqrestore(&pcdev->lock, flags);
+ return -ENOMEM;
+ }
- pcdev->buf_discard[0].discard = true;
- list_add_tail(&pcdev->buf_discard[0].queue,
- &pcdev->discard);
+ pcdev->buf_discard[0].discard = true;
+ list_add_tail(&pcdev->buf_discard[0].queue,
+ &pcdev->discard);
- pcdev->buf_discard[1].discard = true;
- list_add_tail(&pcdev->buf_discard[1].queue,
- &pcdev->discard);
+ pcdev->buf_discard[1].discard = true;
+ list_add_tail(&pcdev->buf_discard[1].queue,
+ &pcdev->discard);
- mx2_prp_resize_commit(pcdev);
+ mx2_prp_resize_commit(pcdev);
- mx27_camera_emma_buf_init(icd, bytesperline);
+ mx27_camera_emma_buf_init(icd, bytesperline);
- if (prp->cfg.channel == 1) {
- writel(PRP_CNTL_CH1EN |
- PRP_CNTL_CSIEN |
- prp->cfg.in_fmt |
- prp->cfg.out_fmt |
- PRP_CNTL_CH1_LEN |
- PRP_CNTL_CH1BYP |
- PRP_CNTL_CH1_TSKIP(0) |
- PRP_CNTL_IN_TSKIP(0),
- pcdev->base_emma + PRP_CNTL);
- } else {
- writel(PRP_CNTL_CH2EN |
- PRP_CNTL_CSIEN |
- prp->cfg.in_fmt |
- prp->cfg.out_fmt |
- PRP_CNTL_CH2_LEN |
- PRP_CNTL_CH2_TSKIP(0) |
- PRP_CNTL_IN_TSKIP(0),
- pcdev->base_emma + PRP_CNTL);
- }
- spin_unlock_irqrestore(&pcdev->lock, flags);
+ if (prp->cfg.channel == 1) {
+ writel(PRP_CNTL_CH1EN |
+ PRP_CNTL_CSIEN |
+ prp->cfg.in_fmt |
+ prp->cfg.out_fmt |
+ PRP_CNTL_CH1_LEN |
+ PRP_CNTL_CH1BYP |
+ PRP_CNTL_CH1_TSKIP(0) |
+ PRP_CNTL_IN_TSKIP(0),
+ pcdev->base_emma + PRP_CNTL);
+ } else {
+ writel(PRP_CNTL_CH2EN |
+ PRP_CNTL_CSIEN |
+ prp->cfg.in_fmt |
+ prp->cfg.out_fmt |
+ PRP_CNTL_CH2_LEN |
+ PRP_CNTL_CH2_TSKIP(0) |
+ PRP_CNTL_IN_TSKIP(0),
+ pcdev->base_emma + PRP_CNTL);
}
+ spin_unlock_irqrestore(&pcdev->lock, flags);
return 0;
}
-static int mx2_stop_streaming(struct vb2_queue *q)
+static void mx2_stop_streaming(struct vb2_queue *q)
{
struct soc_camera_device *icd = soc_camera_from_vb2q(q);
struct soc_camera_host *ici =
@@ -977,38 +752,33 @@ static int mx2_stop_streaming(struct vb2_queue *q)
void *b;
u32 cntl;
- if (is_imx27_camera(pcdev)) {
- spin_lock_irqsave(&pcdev->lock, flags);
-
- cntl = readl(pcdev->base_emma + PRP_CNTL);
- if (prp->cfg.channel == 1) {
- writel(cntl & ~PRP_CNTL_CH1EN,
- pcdev->base_emma + PRP_CNTL);
- } else {
- writel(cntl & ~PRP_CNTL_CH2EN,
- pcdev->base_emma + PRP_CNTL);
- }
- INIT_LIST_HEAD(&pcdev->capture);
- INIT_LIST_HEAD(&pcdev->active_bufs);
- INIT_LIST_HEAD(&pcdev->discard);
+ spin_lock_irqsave(&pcdev->lock, flags);
- b = pcdev->discard_buffer;
- pcdev->discard_buffer = NULL;
+ cntl = readl(pcdev->base_emma + PRP_CNTL);
+ if (prp->cfg.channel == 1) {
+ writel(cntl & ~PRP_CNTL_CH1EN,
+ pcdev->base_emma + PRP_CNTL);
+ } else {
+ writel(cntl & ~PRP_CNTL_CH2EN,
+ pcdev->base_emma + PRP_CNTL);
+ }
+ INIT_LIST_HEAD(&pcdev->capture);
+ INIT_LIST_HEAD(&pcdev->active_bufs);
+ INIT_LIST_HEAD(&pcdev->discard);
- spin_unlock_irqrestore(&pcdev->lock, flags);
+ b = pcdev->discard_buffer;
+ pcdev->discard_buffer = NULL;
- dma_free_coherent(ici->v4l2_dev.dev,
- pcdev->discard_size, b, pcdev->discard_buffer_dma);
- }
+ spin_unlock_irqrestore(&pcdev->lock, flags);
- return 0;
+ dma_free_coherent(ici->v4l2_dev.dev,
+ pcdev->discard_size, b, pcdev->discard_buffer_dma);
}
static struct vb2_ops mx2_videobuf_ops = {
.queue_setup = mx2_videobuf_setup,
.buf_prepare = mx2_videobuf_prepare,
.buf_queue = mx2_videobuf_queue,
- .buf_cleanup = mx2_videobuf_release,
.start_streaming = mx2_start_streaming,
.stop_streaming = mx2_stop_streaming,
};
@@ -1022,6 +792,7 @@ static int mx2_camera_init_videobuf(struct vb2_queue *q,
q->ops = &mx2_videobuf_ops;
q->mem_ops = &vb2_dma_contig_memops;
q->buf_struct_size = sizeof(struct mx2_buffer);
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
return vb2_queue_init(q);
}
@@ -1129,16 +900,9 @@ static int mx2_camera_set_bus_param(struct soc_camera_device *icd)
if (bytesperline < 0)
return bytesperline;
- if (is_imx27_camera(pcdev)) {
- ret = mx27_camera_emma_prp_reset(pcdev);
- if (ret)
- return ret;
- } else if (is_imx25_camera(pcdev)) {
- writel((bytesperline * icd->user_height) >> 2,
- pcdev->base_csi + CSIRXCNT);
- writel((bytesperline << 16) | icd->user_height,
- pcdev->base_csi + CSIIMAG_PARA);
- }
+ ret = mx27_camera_emma_prp_reset(pcdev);
+ if (ret)
+ return ret;
writel(pcdev->csicr1, pcdev->base_csi + CSICR1);
@@ -1425,7 +1189,6 @@ static int mx2_camera_try_fmt(struct soc_camera_device *icd,
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx2_camera_dev *pcdev = ici->priv;
struct mx2_fmt_cfg *emma_prp;
- unsigned int width_limit;
int ret;
dev_dbg(icd->parent, "%s: requested params: width = %d, height = %d\n",
@@ -1437,40 +1200,11 @@ static int mx2_camera_try_fmt(struct soc_camera_device *icd,
return -EINVAL;
}
- /* FIXME: implement MX27 limits */
-
- /* limit to MX25 hardware capabilities */
- if (is_imx25_camera(pcdev)) {
- if (xlate->host_fmt->bits_per_sample <= 8)
- width_limit = 0xffff * 4;
- else
- width_limit = 0xffff * 2;
- /* CSIIMAG_PARA limit */
- if (pix->width > width_limit)
- pix->width = width_limit;
- if (pix->height > 0xffff)
- pix->height = 0xffff;
-
- pix->bytesperline = soc_mbus_bytes_per_line(pix->width,
- xlate->host_fmt);
- if (pix->bytesperline < 0)
- return pix->bytesperline;
- pix->sizeimage = soc_mbus_image_size(xlate->host_fmt,
- pix->bytesperline, pix->height);
- /* Check against the CSIRXCNT limit */
- if (pix->sizeimage > 4 * 0x3ffff) {
- /* Adjust geometry, preserve aspect ratio */
- unsigned int new_height = int_sqrt(div_u64(0x3ffffULL *
- 4 * pix->height, pix->bytesperline));
- pix->width = new_height * pix->width / pix->height;
- pix->height = new_height;
- pix->bytesperline = soc_mbus_bytes_per_line(pix->width,
- xlate->host_fmt);
- BUG_ON(pix->bytesperline < 0);
- pix->sizeimage = soc_mbus_image_size(xlate->host_fmt,
- pix->bytesperline, pix->height);
- }
- }
+ /*
+ * limit to MX27 hardware capabilities: width must be a multiple of 8 as
+ * requested by the CSI. (Table 39-2 in the i.MX27 Reference Manual).
+ */
+ pix->width &= ~0x7;
/* limit to sensor capabilities */
mf.width = pix->width;
@@ -1488,7 +1222,7 @@ static int mx2_camera_try_fmt(struct soc_camera_device *icd,
/* If the sensor does not support image size try PrP resizing */
emma_prp = mx27_emma_prp_get_format(xlate->code,
- xlate->host_fmt->fourcc);
+ xlate->host_fmt->fourcc);
if ((mf.width != pix->width || mf.height != pix->height) &&
emma_prp->cfg.in_fmt == PRP_CNTL_DATA_IN_YUV422) {
@@ -1541,6 +1275,8 @@ static struct soc_camera_host_ops mx2_soc_camera_host_ops = {
.owner = THIS_MODULE,
.add = mx2_camera_add_device,
.remove = mx2_camera_remove_device,
+ .clock_start = mx2_camera_clock_start,
+ .clock_stop = mx2_camera_clock_stop,
.set_fmt = mx2_camera_set_fmt,
.set_crop = mx2_camera_set_crop,
.get_formats = mx2_camera_get_formats,
@@ -1600,7 +1336,7 @@ static void mx27_camera_frame_done_emma(struct mx2_camera_dev *pcdev,
vb2_get_plane_payload(vb, 0));
list_del_init(&buf->internal.queue);
- do_gettimeofday(&vb->v4l2_buf.timestamp);
+ v4l2_get_timestamp(&vb->v4l2_buf.timestamp);
vb->v4l2_buf.sequence = pcdev->frame_count;
if (err)
vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
@@ -1634,7 +1370,6 @@ static void mx27_camera_frame_done_emma(struct mx2_camera_dev *pcdev,
list_move_tail(pcdev->capture.next, &pcdev->active_bufs);
vb = &buf->vb;
- buf->state = MX2_STATE_ACTIVE;
phys = vb2_dma_contig_plane_dma_addr(vb, 0);
mx27_update_emma_buf(pcdev, phys, bufnum);
@@ -1707,16 +1442,16 @@ static int mx27_camera_emma_init(struct platform_device *pdev)
goto out;
}
- pcdev->base_emma = devm_request_and_ioremap(pcdev->dev, res_emma);
- if (!pcdev->base_emma) {
- err = -EADDRNOTAVAIL;
+ pcdev->base_emma = devm_ioremap_resource(pcdev->dev, res_emma);
+ if (IS_ERR(pcdev->base_emma)) {
+ err = PTR_ERR(pcdev->base_emma);
goto out;
}
err = devm_request_irq(pcdev->dev, irq_emma, mx27_camera_emma_irq, 0,
MX2_CAM_DRV_NAME, pcdev);
if (err) {
- dev_err(pcdev->dev, "Camera EMMA interrupt register failed \n");
+ dev_err(pcdev->dev, "Camera EMMA interrupt register failed\n");
goto out;
}
@@ -1774,20 +1509,6 @@ static int mx2_camera_probe(struct platform_device *pdev)
goto exit;
}
- pcdev->devtype = pdev->id_entry->driver_data;
- switch (pcdev->devtype) {
- case IMX25_CAMERA:
- pcdev->reg_csisr = CSISR_IMX25;
- pcdev->reg_csicr3 = CSICR3_IMX25;
- break;
- case IMX27_CAMERA:
- pcdev->reg_csisr = CSISR_IMX27;
- pcdev->reg_csicr3 = CSICR3_IMX27;
- break;
- default:
- break;
- }
-
pcdev->clk_csi_ahb = devm_clk_get(&pdev->dev, "ahb");
if (IS_ERR(pcdev->clk_csi_ahb)) {
dev_err(&pdev->dev, "Could not get csi ahb clock\n");
@@ -1824,29 +1545,18 @@ static int mx2_camera_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&pcdev->discard);
spin_lock_init(&pcdev->lock);
- pcdev->base_csi = devm_request_and_ioremap(&pdev->dev, res_csi);
- if (!pcdev->base_csi) {
- err = -EADDRNOTAVAIL;
+ pcdev->base_csi = devm_ioremap_resource(&pdev->dev, res_csi);
+ if (IS_ERR(pcdev->base_csi)) {
+ err = PTR_ERR(pcdev->base_csi);
goto exit;
}
pcdev->dev = &pdev->dev;
platform_set_drvdata(pdev, pcdev);
- if (is_imx25_camera(pcdev)) {
- err = devm_request_irq(&pdev->dev, irq_csi, mx25_camera_irq, 0,
- MX2_CAM_DRV_NAME, pcdev);
- if (err) {
- dev_err(pcdev->dev, "Camera interrupt register failed \n");
- goto exit;
- }
- }
-
- if (is_imx27_camera(pcdev)) {
- err = mx27_camera_emma_init(pdev);
- if (err)
- goto exit;
- }
+ err = mx27_camera_emma_init(pdev);
+ if (err)
+ goto exit;
/*
* We're done with drvdata here. Clear the pointer so that
@@ -1859,8 +1569,6 @@ static int mx2_camera_probe(struct platform_device *pdev)
pcdev->soc_host.priv = pcdev;
pcdev->soc_host.v4l2_dev.dev = &pdev->dev;
pcdev->soc_host.nr = pdev->id;
- if (is_imx25_camera(pcdev))
- pcdev->soc_host.capabilities = SOCAM_HOST_CAP_STRIDE;
pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
if (IS_ERR(pcdev->alloc_ctx)) {
@@ -1879,10 +1587,8 @@ static int mx2_camera_probe(struct platform_device *pdev)
exit_free_emma:
vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
eallocctx:
- if (is_imx27_camera(pcdev)) {
- clk_disable_unprepare(pcdev->clk_emma_ipg);
- clk_disable_unprepare(pcdev->clk_emma_ahb);
- }
+ clk_disable_unprepare(pcdev->clk_emma_ipg);
+ clk_disable_unprepare(pcdev->clk_emma_ahb);
exit:
return err;
}
@@ -1897,10 +1603,8 @@ static int mx2_camera_remove(struct platform_device *pdev)
vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
- if (is_imx27_camera(pcdev)) {
- clk_disable_unprepare(pcdev->clk_emma_ipg);
- clk_disable_unprepare(pcdev->clk_emma_ahb);
- }
+ clk_disable_unprepare(pcdev->clk_emma_ipg);
+ clk_disable_unprepare(pcdev->clk_emma_ahb);
dev_info(&pdev->dev, "MX2 Camera driver unloaded\n");
@@ -1908,28 +1612,16 @@ static int mx2_camera_remove(struct platform_device *pdev)
}
static struct platform_driver mx2_camera_driver = {
- .driver = {
+ .driver = {
.name = MX2_CAM_DRV_NAME,
},
.id_table = mx2_camera_devtype,
.remove = mx2_camera_remove,
};
+module_platform_driver_probe(mx2_camera_driver, mx2_camera_probe);
-static int __init mx2_camera_init(void)
-{
- return platform_driver_probe(&mx2_camera_driver, &mx2_camera_probe);
-}
-
-static void __exit mx2_camera_exit(void)
-{
- return platform_driver_unregister(&mx2_camera_driver);
-}
-
-module_init(mx2_camera_init);
-module_exit(mx2_camera_exit);
-
-MODULE_DESCRIPTION("i.MX27/i.MX25 SoC Camera Host driver");
+MODULE_DESCRIPTION("i.MX27 SoC Camera Host driver");
MODULE_AUTHOR("Sascha Hauer <sha@pengutronix.de>");
MODULE_LICENSE("GPL");
MODULE_VERSION(MX2_CAM_VERSION);
diff --git a/drivers/media/platform/soc_camera/mx3_camera.c b/drivers/media/platform/soc_camera/mx3_camera.c
index 45aef1053a4..83315dfeef6 100644
--- a/drivers/media/platform/soc_camera/mx3_camera.c
+++ b/drivers/media/platform/soc_camera/mx3_camera.c
@@ -94,7 +94,6 @@ struct mx3_camera_dev {
* Interface. If anyone ever builds hardware to enable more than one
* camera _simultaneously_, they will have to modify this driver too
*/
- struct soc_camera_device *icd;
struct clk *clk;
void __iomem *base;
@@ -156,7 +155,7 @@ static void mx3_cam_dma_done(void *arg)
struct mx3_camera_buffer *buf = to_mx3_vb(vb);
list_del_init(&buf->queue);
- do_gettimeofday(&vb->v4l2_buf.timestamp);
+ v4l2_get_timestamp(&vb->v4l2_buf.timestamp);
vb->v4l2_buf.field = mx3_cam->field;
vb->v4l2_buf.sequence = mx3_cam->sequence++;
vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
@@ -267,7 +266,6 @@ static void mx3_videobuf_queue(struct vb2_buffer *vb)
struct idmac_channel *ichan = mx3_cam->idmac_channel[0];
struct idmac_video_param *video = &ichan->params.video;
const struct soc_mbus_pixelfmt *host_fmt = icd->current_fmt->host_fmt;
- unsigned long flags;
dma_cookie_t cookie;
size_t new_size;
@@ -329,7 +327,7 @@ static void mx3_videobuf_queue(struct vb2_buffer *vb)
memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0));
#endif
- spin_lock_irqsave(&mx3_cam->lock, flags);
+ spin_lock_irq(&mx3_cam->lock);
list_add_tail(&buf->queue, &mx3_cam->capture);
if (!mx3_cam->active)
@@ -352,7 +350,7 @@ static void mx3_videobuf_queue(struct vb2_buffer *vb)
if (mx3_cam->active == buf)
mx3_cam->active = NULL;
- spin_unlock_irqrestore(&mx3_cam->lock, flags);
+ spin_unlock_irq(&mx3_cam->lock);
error:
vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
}
@@ -408,7 +406,7 @@ static int mx3_videobuf_init(struct vb2_buffer *vb)
return 0;
}
-static int mx3_stop_streaming(struct vb2_queue *q)
+static void mx3_stop_streaming(struct vb2_queue *q)
{
struct soc_camera_device *icd = soc_camera_from_vb2q(q);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
@@ -432,8 +430,6 @@ static int mx3_stop_streaming(struct vb2_queue *q)
}
spin_unlock_irqrestore(&mx3_cam->lock, flags);
-
- return 0;
}
static struct vb2_ops mx3_videobuf_ops = {
@@ -455,13 +451,13 @@ static int mx3_camera_init_videobuf(struct vb2_queue *q,
q->ops = &mx3_videobuf_ops;
q->mem_ops = &vb2_dma_contig_memops;
q->buf_struct_size = sizeof(struct mx3_camera_buffer);
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
return vb2_queue_init(q);
}
/* First part of ipu_csi_init_interface() */
-static void mx3_camera_activate(struct mx3_camera_dev *mx3_cam,
- struct soc_camera_device *icd)
+static void mx3_camera_activate(struct mx3_camera_dev *mx3_cam)
{
u32 conf;
long rate;
@@ -505,51 +501,49 @@ static void mx3_camera_activate(struct mx3_camera_dev *mx3_cam,
clk_prepare_enable(mx3_cam->clk);
rate = clk_round_rate(mx3_cam->clk, mx3_cam->mclk);
- dev_dbg(icd->parent, "Set SENS_CONF to %x, rate %ld\n", conf, rate);
+ dev_dbg(mx3_cam->soc_host.v4l2_dev.dev, "Set SENS_CONF to %x, rate %ld\n", conf, rate);
if (rate)
clk_set_rate(mx3_cam->clk, rate);
}
-/* Called with .video_lock held */
static int mx3_camera_add_device(struct soc_camera_device *icd)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
- struct mx3_camera_dev *mx3_cam = ici->priv;
+ dev_info(icd->parent, "MX3 Camera driver attached to camera %d\n",
+ icd->devnum);
- if (mx3_cam->icd)
- return -EBUSY;
+ return 0;
+}
- mx3_camera_activate(mx3_cam, icd);
+static void mx3_camera_remove_device(struct soc_camera_device *icd)
+{
+ dev_info(icd->parent, "MX3 Camera driver detached from camera %d\n",
+ icd->devnum);
+}
- mx3_cam->buf_total = 0;
- mx3_cam->icd = icd;
+/* Called with .host_lock held */
+static int mx3_camera_clock_start(struct soc_camera_host *ici)
+{
+ struct mx3_camera_dev *mx3_cam = ici->priv;
- dev_info(icd->parent, "MX3 Camera driver attached to camera %d\n",
- icd->devnum);
+ mx3_camera_activate(mx3_cam);
+
+ mx3_cam->buf_total = 0;
return 0;
}
-/* Called with .video_lock held */
-static void mx3_camera_remove_device(struct soc_camera_device *icd)
+/* Called with .host_lock held */
+static void mx3_camera_clock_stop(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx3_camera_dev *mx3_cam = ici->priv;
struct idmac_channel **ichan = &mx3_cam->idmac_channel[0];
- BUG_ON(icd != mx3_cam->icd);
-
if (*ichan) {
dma_release_channel(&(*ichan)->dma_chan);
*ichan = NULL;
}
clk_disable_unprepare(mx3_cam->clk);
-
- mx3_cam->icd = NULL;
-
- dev_info(icd->parent, "MX3 Camera driver detached from camera %d\n",
- icd->devnum);
}
static int test_platform_param(struct mx3_camera_dev *mx3_cam,
@@ -675,7 +669,7 @@ static int mx3_camera_get_formats(struct soc_camera_device *icd, unsigned int id
fmt = soc_mbus_get_fmtdesc(code);
if (!fmt) {
dev_warn(icd->parent,
- "Unsupported format code #%u: %d\n", idx, code);
+ "Unsupported format code #%u: 0x%x\n", idx, code);
return 0;
}
@@ -691,7 +685,7 @@ static int mx3_camera_get_formats(struct soc_camera_device *icd, unsigned int id
xlate->host_fmt = &mx3_camera_formats[0];
xlate->code = code;
xlate++;
- dev_dbg(dev, "Providing format %s using code %d\n",
+ dev_dbg(dev, "Providing format %s using code 0x%x\n",
mx3_camera_formats[0].name, code);
}
break;
@@ -701,7 +695,7 @@ static int mx3_camera_get_formats(struct soc_camera_device *icd, unsigned int id
xlate->host_fmt = &mx3_camera_formats[1];
xlate->code = code;
xlate++;
- dev_dbg(dev, "Providing format %s using code %d\n",
+ dev_dbg(dev, "Providing format %s using code 0x%x\n",
mx3_camera_formats[1].name, code);
}
break;
@@ -1132,6 +1126,8 @@ static struct soc_camera_host_ops mx3_soc_camera_host_ops = {
.owner = THIS_MODULE,
.add = mx3_camera_add_device,
.remove = mx3_camera_remove_device,
+ .clock_start = mx3_camera_clock_start,
+ .clock_stop = mx3_camera_clock_stop,
.set_crop = mx3_camera_set_crop,
.set_fmt = mx3_camera_set_fmt,
.try_fmt = mx3_camera_try_fmt,
@@ -1145,6 +1141,7 @@ static struct soc_camera_host_ops mx3_soc_camera_host_ops = {
static int mx3_camera_probe(struct platform_device *pdev)
{
+ struct mx3_camera_pdata *pdata = pdev->dev.platform_data;
struct mx3_camera_dev *mx3_cam;
struct resource *res;
void __iomem *base;
@@ -1152,26 +1149,25 @@ static int mx3_camera_probe(struct platform_device *pdev)
struct soc_camera_host *soc_host;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- err = -ENODEV;
- goto egetres;
- }
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ if (!pdata)
+ return -EINVAL;
- mx3_cam = vzalloc(sizeof(*mx3_cam));
+ mx3_cam = devm_kzalloc(&pdev->dev, sizeof(*mx3_cam), GFP_KERNEL);
if (!mx3_cam) {
dev_err(&pdev->dev, "Could not allocate mx3 camera object\n");
- err = -ENOMEM;
- goto ealloc;
+ return -ENOMEM;
}
- mx3_cam->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(mx3_cam->clk)) {
- err = PTR_ERR(mx3_cam->clk);
- goto eclkget;
- }
+ mx3_cam->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(mx3_cam->clk))
+ return PTR_ERR(mx3_cam->clk);
- mx3_cam->pdata = pdev->dev.platform_data;
- mx3_cam->platform_flags = mx3_cam->pdata->flags;
+ mx3_cam->pdata = pdata;
+ mx3_cam->platform_flags = pdata->flags;
if (!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_MASK)) {
/*
* Platform hasn't set available data widths. This is bad.
@@ -1190,7 +1186,7 @@ static int mx3_camera_probe(struct platform_device *pdev)
if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15)
mx3_cam->width_flags |= 1 << 14;
- mx3_cam->mclk = mx3_cam->pdata->mclk_10khz * 10000;
+ mx3_cam->mclk = pdata->mclk_10khz * 10000;
if (!mx3_cam->mclk) {
dev_warn(&pdev->dev,
"mclk_10khz == 0! Please, fix your platform data. "
@@ -1202,13 +1198,6 @@ static int mx3_camera_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&mx3_cam->capture);
spin_lock_init(&mx3_cam->lock);
- base = ioremap(res->start, resource_size(res));
- if (!base) {
- pr_err("Couldn't map %x@%x\n", resource_size(res), res->start);
- err = -ENOMEM;
- goto eioremap;
- }
-
mx3_cam->base = base;
soc_host = &mx3_cam->soc_host;
@@ -1219,9 +1208,12 @@ static int mx3_camera_probe(struct platform_device *pdev)
soc_host->nr = pdev->id;
mx3_cam->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
- if (IS_ERR(mx3_cam->alloc_ctx)) {
- err = PTR_ERR(mx3_cam->alloc_ctx);
- goto eallocctx;
+ if (IS_ERR(mx3_cam->alloc_ctx))
+ return PTR_ERR(mx3_cam->alloc_ctx);
+
+ if (pdata->asd_sizes) {
+ soc_host->asd = pdata->asd;
+ soc_host->asd_sizes = pdata->asd_sizes;
}
err = soc_camera_host_register(soc_host);
@@ -1235,14 +1227,6 @@ static int mx3_camera_probe(struct platform_device *pdev)
ecamhostreg:
vb2_dma_contig_cleanup_ctx(mx3_cam->alloc_ctx);
-eallocctx:
- iounmap(base);
-eioremap:
- clk_put(mx3_cam->clk);
-eclkget:
- vfree(mx3_cam);
-ealloc:
-egetres:
return err;
}
@@ -1252,12 +1236,8 @@ static int mx3_camera_remove(struct platform_device *pdev)
struct mx3_camera_dev *mx3_cam = container_of(soc_host,
struct mx3_camera_dev, soc_host);
- clk_put(mx3_cam->clk);
-
soc_camera_host_unregister(soc_host);
- iounmap(mx3_cam->base);
-
/*
* The channel has either not been allocated,
* or should have been released
@@ -1267,16 +1247,15 @@ static int mx3_camera_remove(struct platform_device *pdev)
vb2_dma_contig_cleanup_ctx(mx3_cam->alloc_ctx);
- vfree(mx3_cam);
-
dmaengine_put();
return 0;
}
static struct platform_driver mx3_camera_driver = {
- .driver = {
+ .driver = {
.name = MX3_CAM_DRV_NAME,
+ .owner = THIS_MODULE,
},
.probe = mx3_camera_probe,
.remove = mx3_camera_remove,
diff --git a/drivers/media/platform/soc_camera/omap1_camera.c b/drivers/media/platform/soc_camera/omap1_camera.c
index 39a77f0b886..74ce8b6b79f 100644
--- a/drivers/media/platform/soc_camera/omap1_camera.c
+++ b/drivers/media/platform/soc_camera/omap1_camera.c
@@ -150,7 +150,6 @@ struct omap1_cam_buf {
struct omap1_cam_dev {
struct soc_camera_host soc_host;
- struct soc_camera_device *icd;
struct clk *clk;
unsigned int irq;
@@ -564,7 +563,7 @@ static void videobuf_done(struct omap1_cam_dev *pcdev,
{
struct omap1_cam_buf *buf = pcdev->active;
struct videobuf_buffer *vb;
- struct device *dev = pcdev->icd->parent;
+ struct device *dev = pcdev->soc_host.icd->parent;
if (WARN_ON(!buf)) {
suspend_capture(pcdev);
@@ -592,7 +591,7 @@ static void videobuf_done(struct omap1_cam_dev *pcdev,
suspend_capture(pcdev);
}
vb->state = result;
- do_gettimeofday(&vb->ts);
+ v4l2_get_timestamp(&vb->ts);
if (result != VIDEOBUF_ERROR)
vb->field_count++;
wake_up(&vb->done);
@@ -790,7 +789,7 @@ out:
static irqreturn_t cam_isr(int irq, void *data)
{
struct omap1_cam_dev *pcdev = data;
- struct device *dev = pcdev->icd->parent;
+ struct device *dev = pcdev->soc_host.icd->parent;
struct omap1_cam_buf *buf = pcdev->active;
u32 it_status;
unsigned long flags;
@@ -894,19 +893,29 @@ static void sensor_reset(struct omap1_cam_dev *pcdev, bool reset)
CAM_WRITE(pcdev, GPIO, !reset);
}
+static int omap1_cam_add_device(struct soc_camera_device *icd)
+{
+ dev_dbg(icd->parent, "OMAP1 Camera driver attached to camera %d\n",
+ icd->devnum);
+
+ return 0;
+}
+
+static void omap1_cam_remove_device(struct soc_camera_device *icd)
+{
+ dev_dbg(icd->parent,
+ "OMAP1 Camera driver detached from camera %d\n", icd->devnum);
+}
+
/*
* The following two functions absolutely depend on the fact, that
* there can be only one camera on OMAP1 camera sensor interface
*/
-static int omap1_cam_add_device(struct soc_camera_device *icd)
+static int omap1_cam_clock_start(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct omap1_cam_dev *pcdev = ici->priv;
u32 ctrlclock;
- if (pcdev->icd)
- return -EBUSY;
-
clk_enable(pcdev->clk);
/* setup sensor clock */
@@ -941,21 +950,14 @@ static int omap1_cam_add_device(struct soc_camera_device *icd)
sensor_reset(pcdev, false);
- pcdev->icd = icd;
-
- dev_dbg(icd->parent, "OMAP1 Camera driver attached to camera %d\n",
- icd->devnum);
return 0;
}
-static void omap1_cam_remove_device(struct soc_camera_device *icd)
+static void omap1_cam_clock_stop(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct omap1_cam_dev *pcdev = ici->priv;
u32 ctrlclock;
- BUG_ON(icd != pcdev->icd);
-
suspend_capture(pcdev);
disable_capture(pcdev);
@@ -973,11 +975,6 @@ static void omap1_cam_remove_device(struct soc_camera_device *icd)
CAM_WRITE(pcdev, CTRLCLOCK, ctrlclock & ~MCLK_EN);
clk_disable(pcdev->clk);
-
- pcdev->icd = NULL;
-
- dev_dbg(icd->parent,
- "OMAP1 Camera driver detached from camera %d\n", icd->devnum);
}
/* Duplicate standard formats based on host capability of byte swapping */
@@ -1383,12 +1380,12 @@ static void omap1_cam_init_videobuf(struct videobuf_queue *q,
videobuf_queue_dma_contig_init(q, &omap1_videobuf_ops,
icd->parent, &pcdev->lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE,
- sizeof(struct omap1_cam_buf), icd, &icd->video_lock);
+ sizeof(struct omap1_cam_buf), icd, &ici->host_lock);
else
videobuf_queue_sg_init(q, &omap1_videobuf_ops,
icd->parent, &pcdev->lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE,
- sizeof(struct omap1_cam_buf), icd, &icd->video_lock);
+ sizeof(struct omap1_cam_buf), icd, &ici->host_lock);
/* use videobuf mode (auto)selected with the module parameter */
pcdev->vb_mode = sg_mode ? OMAP1_CAM_DMA_SG : OMAP1_CAM_DMA_CONTIG;
@@ -1498,7 +1495,7 @@ static int omap1_cam_set_bus_param(struct soc_camera_device *icd)
if (ctrlclock & LCLK_EN)
CAM_WRITE(pcdev, CTRLCLOCK, ctrlclock);
- /* select bus endianess */
+ /* select bus endianness */
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
fmt = xlate->host_fmt;
@@ -1535,6 +1532,8 @@ static struct soc_camera_host_ops omap1_host_ops = {
.owner = THIS_MODULE,
.add = omap1_cam_add_device,
.remove = omap1_cam_remove_device,
+ .clock_start = omap1_cam_clock_start,
+ .clock_stop = omap1_cam_clock_stop,
.get_formats = omap1_cam_get_formats,
.set_crop = omap1_cam_set_crop,
.set_fmt = omap1_cam_set_fmt,
@@ -1546,7 +1545,7 @@ static struct soc_camera_host_ops omap1_host_ops = {
.poll = omap1_cam_poll,
};
-static int __init omap1_cam_probe(struct platform_device *pdev)
+static int omap1_cam_probe(struct platform_device *pdev)
{
struct omap1_cam_dev *pcdev;
struct resource *res;
@@ -1677,7 +1676,7 @@ exit:
return err;
}
-static int __exit omap1_cam_remove(struct platform_device *pdev)
+static int omap1_cam_remove(struct platform_device *pdev)
{
struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
struct omap1_cam_dev *pcdev = container_of(soc_host,
@@ -1709,7 +1708,7 @@ static struct platform_driver omap1_cam_driver = {
.name = DRIVER_NAME,
},
.probe = omap1_cam_probe,
- .remove = __exit_p(omap1_cam_remove),
+ .remove = omap1_cam_remove,
};
module_platform_driver(omap1_cam_driver);
diff --git a/drivers/media/platform/soc_camera/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c
index 523330d00de..d4df305fcc1 100644
--- a/drivers/media/platform/soc_camera/pxa_camera.c
+++ b/drivers/media/platform/soc_camera/pxa_camera.c
@@ -15,6 +15,7 @@
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
@@ -199,7 +200,6 @@ struct pxa_camera_dev {
* interface. If anyone ever builds hardware to enable more than
* one camera, they will have to modify this driver too
*/
- struct soc_camera_device *icd;
struct clk *clk;
unsigned int irq;
@@ -681,7 +681,7 @@ static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev,
/* _init is used to debug races, see comment in pxa_camera_reqbufs() */
list_del_init(&vb->queue);
vb->state = VIDEOBUF_DONE;
- do_gettimeofday(&vb->ts);
+ v4l2_get_timestamp(&vb->ts);
vb->field_count++;
wake_up(&vb->done);
dev_dbg(pcdev->soc_host.v4l2_dev.dev, "%s dequeud buffer (vb=0x%p)\n",
@@ -842,7 +842,7 @@ static void pxa_camera_init_videobuf(struct videobuf_queue *q,
*/
videobuf_queue_sg_init(q, &pxa_videobuf_ops, NULL, &pcdev->lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE,
- sizeof(struct pxa_buffer), icd, &icd->video_lock);
+ sizeof(struct pxa_buffer), icd, &ici->host_lock);
}
static u32 mclk_get_divisor(struct platform_device *pdev,
@@ -955,40 +955,39 @@ static irqreturn_t pxa_camera_irq(int irq, void *data)
return IRQ_HANDLED;
}
+static int pxa_camera_add_device(struct soc_camera_device *icd)
+{
+ dev_info(icd->parent, "PXA Camera driver attached to camera %d\n",
+ icd->devnum);
+
+ return 0;
+}
+
+static void pxa_camera_remove_device(struct soc_camera_device *icd)
+{
+ dev_info(icd->parent, "PXA Camera driver detached from camera %d\n",
+ icd->devnum);
+}
+
/*
* The following two functions absolutely depend on the fact, that
* there can be only one camera on PXA quick capture interface
- * Called with .video_lock held
+ * Called with .host_lock held
*/
-static int pxa_camera_add_device(struct soc_camera_device *icd)
+static int pxa_camera_clock_start(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct pxa_camera_dev *pcdev = ici->priv;
- if (pcdev->icd)
- return -EBUSY;
-
pxa_camera_activate(pcdev);
- pcdev->icd = icd;
-
- dev_info(icd->parent, "PXA Camera driver attached to camera %d\n",
- icd->devnum);
-
return 0;
}
-/* Called with .video_lock held */
-static void pxa_camera_remove_device(struct soc_camera_device *icd)
+/* Called with .host_lock held */
+static void pxa_camera_clock_stop(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct pxa_camera_dev *pcdev = ici->priv;
- BUG_ON(icd != pcdev->icd);
-
- dev_info(icd->parent, "PXA Camera driver detached from camera %d\n",
- icd->devnum);
-
/* disable capture, disable interrupts */
__raw_writel(0x3ff, pcdev->base + CICR0);
@@ -998,8 +997,6 @@ static void pxa_camera_remove_device(struct soc_camera_device *icd)
DCSR(pcdev->dma_chans[2]) = 0;
pxa_camera_deactivate(pcdev);
-
- pcdev->icd = NULL;
}
static int test_platform_param(struct pxa_camera_dev *pcdev,
@@ -1595,8 +1592,8 @@ static int pxa_camera_suspend(struct device *dev)
pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR3);
pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR4);
- if (pcdev->icd) {
- struct v4l2_subdev *sd = soc_camera_to_subdev(pcdev->icd);
+ if (pcdev->soc_host.icd) {
+ struct v4l2_subdev *sd = soc_camera_to_subdev(pcdev->soc_host.icd);
ret = v4l2_subdev_call(sd, core, s_power, 0);
if (ret == -ENOIOCTLCMD)
ret = 0;
@@ -1621,8 +1618,8 @@ static int pxa_camera_resume(struct device *dev)
__raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR3);
__raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR4);
- if (pcdev->icd) {
- struct v4l2_subdev *sd = soc_camera_to_subdev(pcdev->icd);
+ if (pcdev->soc_host.icd) {
+ struct v4l2_subdev *sd = soc_camera_to_subdev(pcdev->soc_host.icd);
ret = v4l2_subdev_call(sd, core, s_power, 1);
if (ret == -ENOIOCTLCMD)
ret = 0;
@@ -1639,6 +1636,8 @@ static struct soc_camera_host_ops pxa_soc_camera_host_ops = {
.owner = THIS_MODULE,
.add = pxa_camera_add_device,
.remove = pxa_camera_remove_device,
+ .clock_start = pxa_camera_clock_start,
+ .clock_stop = pxa_camera_clock_stop,
.set_crop = pxa_camera_set_crop,
.get_formats = pxa_camera_get_formats,
.put_formats = pxa_camera_put_formats,
@@ -1661,23 +1660,18 @@ static int pxa_camera_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
- if (!res || irq < 0) {
- err = -ENODEV;
- goto exit;
- }
+ if (!res || irq < 0)
+ return -ENODEV;
- pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL);
+ pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL);
if (!pcdev) {
dev_err(&pdev->dev, "Could not allocate pcdev\n");
- err = -ENOMEM;
- goto exit;
+ return -ENOMEM;
}
- pcdev->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(pcdev->clk)) {
- err = PTR_ERR(pcdev->clk);
- goto exit_kfree;
- }
+ pcdev->clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(pcdev->clk))
+ return PTR_ERR(pcdev->clk);
pcdev->res = res;
@@ -1715,17 +1709,10 @@ static int pxa_camera_probe(struct platform_device *pdev)
/*
* Request the regions.
*/
- if (!request_mem_region(res->start, resource_size(res),
- PXA_CAM_DRV_NAME)) {
- err = -EBUSY;
- goto exit_clk;
- }
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
- base = ioremap(res->start, resource_size(res));
- if (!base) {
- err = -ENOMEM;
- goto exit_release;
- }
pcdev->irq = irq;
pcdev->base = base;
@@ -1734,7 +1721,7 @@ static int pxa_camera_probe(struct platform_device *pdev)
pxa_camera_dma_irq_y, pcdev);
if (err < 0) {
dev_err(&pdev->dev, "Can't request DMA for Y\n");
- goto exit_iounmap;
+ return err;
}
pcdev->dma_chans[0] = err;
dev_dbg(&pdev->dev, "got DMA channel %d\n", pcdev->dma_chans[0]);
@@ -1762,10 +1749,10 @@ static int pxa_camera_probe(struct platform_device *pdev)
DRCMR(70) = pcdev->dma_chans[2] | DRCMR_MAPVLD;
/* request irq */
- err = request_irq(pcdev->irq, pxa_camera_irq, 0, PXA_CAM_DRV_NAME,
- pcdev);
+ err = devm_request_irq(&pdev->dev, pcdev->irq, pxa_camera_irq, 0,
+ PXA_CAM_DRV_NAME, pcdev);
if (err) {
- dev_err(&pdev->dev, "Camera interrupt register failed \n");
+ dev_err(&pdev->dev, "Camera interrupt register failed\n");
goto exit_free_dma;
}
@@ -1777,27 +1764,16 @@ static int pxa_camera_probe(struct platform_device *pdev)
err = soc_camera_host_register(&pcdev->soc_host);
if (err)
- goto exit_free_irq;
+ goto exit_free_dma;
return 0;
-exit_free_irq:
- free_irq(pcdev->irq, pcdev);
exit_free_dma:
pxa_free_dma(pcdev->dma_chans[2]);
exit_free_dma_u:
pxa_free_dma(pcdev->dma_chans[1]);
exit_free_dma_y:
pxa_free_dma(pcdev->dma_chans[0]);
-exit_iounmap:
- iounmap(base);
-exit_release:
- release_mem_region(res->start, resource_size(res));
-exit_clk:
- clk_put(pcdev->clk);
-exit_kfree:
- kfree(pcdev);
-exit:
return err;
}
@@ -1806,36 +1782,25 @@ static int pxa_camera_remove(struct platform_device *pdev)
struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
struct pxa_camera_dev *pcdev = container_of(soc_host,
struct pxa_camera_dev, soc_host);
- struct resource *res;
-
- clk_put(pcdev->clk);
pxa_free_dma(pcdev->dma_chans[0]);
pxa_free_dma(pcdev->dma_chans[1]);
pxa_free_dma(pcdev->dma_chans[2]);
- free_irq(pcdev->irq, pcdev);
soc_camera_host_unregister(soc_host);
- iounmap(pcdev->base);
-
- res = pcdev->res;
- release_mem_region(res->start, resource_size(res));
-
- kfree(pcdev);
-
dev_info(&pdev->dev, "PXA Camera driver unloaded\n");
return 0;
}
-static struct dev_pm_ops pxa_camera_pm = {
+static const struct dev_pm_ops pxa_camera_pm = {
.suspend = pxa_camera_suspend,
.resume = pxa_camera_resume,
};
static struct platform_driver pxa_camera_driver = {
- .driver = {
+ .driver = {
.name = PXA_CAM_DRV_NAME,
.pm = &pxa_camera_pm,
},
diff --git a/drivers/media/platform/soc_camera/rcar_vin.c b/drivers/media/platform/soc_camera/rcar_vin.c
new file mode 100644
index 00000000000..e594230e84d
--- /dev/null
+++ b/drivers/media/platform/soc_camera/rcar_vin.c
@@ -0,0 +1,1498 @@
+/*
+ * SoC-camera host driver for Renesas R-Car VIN unit
+ *
+ * Copyright (C) 2011-2013 Renesas Solutions Corp.
+ * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
+ *
+ * Based on V4L2 Driver for SuperH Mobile CEU interface "sh_mobile_ceu_camera.c"
+ *
+ * Copyright (C) 2008 Magnus Damm
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_data/camera-rcar.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+
+#include <media/soc_camera.h>
+#include <media/soc_mediabus.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-mediabus.h>
+#include <media/v4l2-subdev.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "soc_scale_crop.h"
+
+#define DRV_NAME "rcar_vin"
+
+/* Register offsets for R-Car VIN */
+#define VNMC_REG 0x00 /* Video n Main Control Register */
+#define VNMS_REG 0x04 /* Video n Module Status Register */
+#define VNFC_REG 0x08 /* Video n Frame Capture Register */
+#define VNSLPRC_REG 0x0C /* Video n Start Line Pre-Clip Register */
+#define VNELPRC_REG 0x10 /* Video n End Line Pre-Clip Register */
+#define VNSPPRC_REG 0x14 /* Video n Start Pixel Pre-Clip Register */
+#define VNEPPRC_REG 0x18 /* Video n End Pixel Pre-Clip Register */
+#define VNSLPOC_REG 0x1C /* Video n Start Line Post-Clip Register */
+#define VNELPOC_REG 0x20 /* Video n End Line Post-Clip Register */
+#define VNSPPOC_REG 0x24 /* Video n Start Pixel Post-Clip Register */
+#define VNEPPOC_REG 0x28 /* Video n End Pixel Post-Clip Register */
+#define VNIS_REG 0x2C /* Video n Image Stride Register */
+#define VNMB_REG(m) (0x30 + ((m) << 2)) /* Video n Memory Base m Register */
+#define VNIE_REG 0x40 /* Video n Interrupt Enable Register */
+#define VNINTS_REG 0x44 /* Video n Interrupt Status Register */
+#define VNSI_REG 0x48 /* Video n Scanline Interrupt Register */
+#define VNMTC_REG 0x4C /* Video n Memory Transfer Control Register */
+#define VNYS_REG 0x50 /* Video n Y Scale Register */
+#define VNXS_REG 0x54 /* Video n X Scale Register */
+#define VNDMR_REG 0x58 /* Video n Data Mode Register */
+#define VNDMR2_REG 0x5C /* Video n Data Mode Register 2 */
+#define VNUVAOF_REG 0x60 /* Video n UV Address Offset Register */
+
+/* Register bit fields for R-Car VIN */
+/* Video n Main Control Register bits */
+#define VNMC_FOC (1 << 21)
+#define VNMC_YCAL (1 << 19)
+#define VNMC_INF_YUV8_BT656 (0 << 16)
+#define VNMC_INF_YUV8_BT601 (1 << 16)
+#define VNMC_INF_YUV10_BT656 (2 << 16)
+#define VNMC_INF_YUV10_BT601 (3 << 16)
+#define VNMC_INF_YUV16 (5 << 16)
+#define VNMC_VUP (1 << 10)
+#define VNMC_IM_ODD (0 << 3)
+#define VNMC_IM_ODD_EVEN (1 << 3)
+#define VNMC_IM_EVEN (2 << 3)
+#define VNMC_IM_FULL (3 << 3)
+#define VNMC_BPS (1 << 1)
+#define VNMC_ME (1 << 0)
+
+/* Video n Module Status Register bits */
+#define VNMS_FBS_MASK (3 << 3)
+#define VNMS_FBS_SHIFT 3
+#define VNMS_AV (1 << 1)
+#define VNMS_CA (1 << 0)
+
+/* Video n Frame Capture Register bits */
+#define VNFC_C_FRAME (1 << 1)
+#define VNFC_S_FRAME (1 << 0)
+
+/* Video n Interrupt Enable Register bits */
+#define VNIE_FIE (1 << 4)
+#define VNIE_EFE (1 << 1)
+
+/* Video n Data Mode Register bits */
+#define VNDMR_EXRGB (1 << 8)
+#define VNDMR_BPSM (1 << 4)
+#define VNDMR_DTMD_YCSEP (1 << 1)
+#define VNDMR_DTMD_ARGB1555 (1 << 0)
+
+/* Video n Data Mode Register 2 bits */
+#define VNDMR2_VPS (1 << 30)
+#define VNDMR2_HPS (1 << 29)
+#define VNDMR2_FTEV (1 << 17)
+
+#define VIN_MAX_WIDTH 2048
+#define VIN_MAX_HEIGHT 2048
+
+enum chip_id {
+ RCAR_GEN2,
+ RCAR_H1,
+ RCAR_M1,
+ RCAR_E1,
+};
+
+enum rcar_vin_state {
+ STOPPED = 0,
+ RUNNING,
+ STOPPING,
+};
+
+struct rcar_vin_priv {
+ void __iomem *base;
+ spinlock_t lock;
+ int sequence;
+ /* State of the VIN module in capturing mode */
+ enum rcar_vin_state state;
+ struct rcar_vin_platform_data *pdata;
+ struct soc_camera_host ici;
+ struct list_head capture;
+#define MAX_BUFFER_NUM 3
+ struct vb2_buffer *queue_buf[MAX_BUFFER_NUM];
+ struct vb2_alloc_ctx *alloc_ctx;
+ enum v4l2_field field;
+ unsigned int vb_count;
+ unsigned int nr_hw_slots;
+ bool request_to_stop;
+ struct completion capture_stop;
+ enum chip_id chip;
+};
+
+#define is_continuous_transfer(priv) (priv->vb_count > MAX_BUFFER_NUM)
+
+struct rcar_vin_buffer {
+ struct vb2_buffer vb;
+ struct list_head list;
+};
+
+#define to_buf_list(vb2_buffer) (&container_of(vb2_buffer, \
+ struct rcar_vin_buffer, \
+ vb)->list)
+
+struct rcar_vin_cam {
+ /* VIN offsets within the camera output, before the VIN scaler */
+ unsigned int vin_left;
+ unsigned int vin_top;
+ /* Client output, as seen by the VIN */
+ unsigned int width;
+ unsigned int height;
+ /*
+ * User window from S_CROP / G_CROP, produced by client cropping and
+ * scaling, VIN scaling and VIN cropping, mapped back onto the client
+ * input window
+ */
+ struct v4l2_rect subrect;
+ /* Camera cropping rectangle */
+ struct v4l2_rect rect;
+ const struct soc_mbus_pixelfmt *extra_fmt;
+};
+
+/*
+ * .queue_setup() is called to check whether the driver can accept the requested
+ * number of buffers and to fill in plane sizes for the current frame format if
+ * required
+ */
+static int rcar_vin_videobuf_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
+ unsigned int *count,
+ unsigned int *num_planes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_priv *priv = ici->priv;
+
+ if (fmt) {
+ const struct soc_camera_format_xlate *xlate;
+ unsigned int bytes_per_line;
+ int ret;
+
+ xlate = soc_camera_xlate_by_fourcc(icd,
+ fmt->fmt.pix.pixelformat);
+ if (!xlate)
+ return -EINVAL;
+ ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width,
+ xlate->host_fmt);
+ if (ret < 0)
+ return ret;
+
+ bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret);
+
+ ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line,
+ fmt->fmt.pix.height);
+ if (ret < 0)
+ return ret;
+
+ sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret);
+ } else {
+ /* Called from VIDIOC_REQBUFS or in compatibility mode */
+ sizes[0] = icd->sizeimage;
+ }
+
+ alloc_ctxs[0] = priv->alloc_ctx;
+
+ if (!vq->num_buffers)
+ priv->sequence = 0;
+
+ if (!*count)
+ *count = 2;
+ priv->vb_count = *count;
+
+ *num_planes = 1;
+
+ /* Number of hardware slots */
+ if (is_continuous_transfer(priv))
+ priv->nr_hw_slots = MAX_BUFFER_NUM;
+ else
+ priv->nr_hw_slots = 1;
+
+ dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]);
+
+ return 0;
+}
+
+static int rcar_vin_setup(struct rcar_vin_priv *priv)
+{
+ struct soc_camera_device *icd = priv->ici.icd;
+ struct rcar_vin_cam *cam = icd->host_priv;
+ u32 vnmc, dmr, interrupts;
+ bool progressive = false, output_is_yuv = false;
+
+ switch (priv->field) {
+ case V4L2_FIELD_TOP:
+ vnmc = VNMC_IM_ODD;
+ break;
+ case V4L2_FIELD_BOTTOM:
+ vnmc = VNMC_IM_EVEN;
+ break;
+ case V4L2_FIELD_INTERLACED:
+ case V4L2_FIELD_INTERLACED_TB:
+ vnmc = VNMC_IM_FULL;
+ break;
+ case V4L2_FIELD_INTERLACED_BT:
+ vnmc = VNMC_IM_FULL | VNMC_FOC;
+ break;
+ case V4L2_FIELD_NONE:
+ if (is_continuous_transfer(priv)) {
+ vnmc = VNMC_IM_ODD_EVEN;
+ progressive = true;
+ } else {
+ vnmc = VNMC_IM_ODD;
+ }
+ break;
+ default:
+ vnmc = VNMC_IM_ODD;
+ break;
+ }
+
+ /* input interface */
+ switch (icd->current_fmt->code) {
+ case V4L2_MBUS_FMT_YUYV8_1X16:
+ /* BT.601/BT.1358 16bit YCbCr422 */
+ vnmc |= VNMC_INF_YUV16;
+ break;
+ case V4L2_MBUS_FMT_YUYV8_2X8:
+ /* BT.656 8bit YCbCr422 or BT.601 8bit YCbCr422 */
+ vnmc |= priv->pdata->flags & RCAR_VIN_BT656 ?
+ VNMC_INF_YUV8_BT656 : VNMC_INF_YUV8_BT601;
+ break;
+ case V4L2_MBUS_FMT_YUYV10_2X10:
+ /* BT.656 10bit YCbCr422 or BT.601 10bit YCbCr422 */
+ vnmc |= priv->pdata->flags & RCAR_VIN_BT656 ?
+ VNMC_INF_YUV10_BT656 : VNMC_INF_YUV10_BT601;
+ break;
+ default:
+ break;
+ }
+
+ /* output format */
+ switch (icd->current_fmt->host_fmt->fourcc) {
+ case V4L2_PIX_FMT_NV16:
+ iowrite32(ALIGN(cam->width * cam->height, 0x80),
+ priv->base + VNUVAOF_REG);
+ dmr = VNDMR_DTMD_YCSEP;
+ output_is_yuv = true;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ dmr = VNDMR_BPSM;
+ output_is_yuv = true;
+ break;
+ case V4L2_PIX_FMT_UYVY:
+ dmr = 0;
+ output_is_yuv = true;
+ break;
+ case V4L2_PIX_FMT_RGB555X:
+ dmr = VNDMR_DTMD_ARGB1555;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ dmr = 0;
+ break;
+ case V4L2_PIX_FMT_RGB32:
+ if (priv->chip == RCAR_GEN2 || priv->chip == RCAR_H1 ||
+ priv->chip == RCAR_E1) {
+ dmr = VNDMR_EXRGB;
+ break;
+ }
+ default:
+ dev_warn(icd->parent, "Invalid fourcc format (0x%x)\n",
+ icd->current_fmt->host_fmt->fourcc);
+ return -EINVAL;
+ }
+
+ /* Always update on field change */
+ vnmc |= VNMC_VUP;
+
+ /* If input and output use the same colorspace, use bypass mode */
+ if (output_is_yuv)
+ vnmc |= VNMC_BPS;
+
+ /* progressive or interlaced mode */
+ interrupts = progressive ? VNIE_FIE | VNIE_EFE : VNIE_EFE;
+
+ /* ack interrupts */
+ iowrite32(interrupts, priv->base + VNINTS_REG);
+ /* enable interrupts */
+ iowrite32(interrupts, priv->base + VNIE_REG);
+ /* start capturing */
+ iowrite32(dmr, priv->base + VNDMR_REG);
+ iowrite32(vnmc | VNMC_ME, priv->base + VNMC_REG);
+
+ return 0;
+}
+
+static void rcar_vin_capture(struct rcar_vin_priv *priv)
+{
+ if (is_continuous_transfer(priv))
+ /* Continuous Frame Capture Mode */
+ iowrite32(VNFC_C_FRAME, priv->base + VNFC_REG);
+ else
+ /* Single Frame Capture Mode */
+ iowrite32(VNFC_S_FRAME, priv->base + VNFC_REG);
+}
+
+static void rcar_vin_request_capture_stop(struct rcar_vin_priv *priv)
+{
+ priv->state = STOPPING;
+
+ /* set continuous & single transfer off */
+ iowrite32(0, priv->base + VNFC_REG);
+ /* disable capture (release DMA buffer), reset */
+ iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME,
+ priv->base + VNMC_REG);
+
+ /* update the status if stopped already */
+ if (!(ioread32(priv->base + VNMS_REG) & VNMS_CA))
+ priv->state = STOPPED;
+}
+
+static int rcar_vin_get_free_hw_slot(struct rcar_vin_priv *priv)
+{
+ int slot;
+
+ for (slot = 0; slot < priv->nr_hw_slots; slot++)
+ if (priv->queue_buf[slot] == NULL)
+ return slot;
+
+ return -1;
+}
+
+static int rcar_vin_hw_ready(struct rcar_vin_priv *priv)
+{
+ /* Ensure all HW slots are filled */
+ return rcar_vin_get_free_hw_slot(priv) < 0 ? 1 : 0;
+}
+
+/* Moves a buffer from the queue to the HW slots */
+static int rcar_vin_fill_hw_slot(struct rcar_vin_priv *priv)
+{
+ struct vb2_buffer *vb;
+ dma_addr_t phys_addr_top;
+ int slot;
+
+ if (list_empty(&priv->capture))
+ return 0;
+
+ /* Find a free HW slot */
+ slot = rcar_vin_get_free_hw_slot(priv);
+ if (slot < 0)
+ return 0;
+
+ vb = &list_entry(priv->capture.next, struct rcar_vin_buffer, list)->vb;
+ list_del_init(to_buf_list(vb));
+ priv->queue_buf[slot] = vb;
+ phys_addr_top = vb2_dma_contig_plane_dma_addr(vb, 0);
+ iowrite32(phys_addr_top, priv->base + VNMB_REG(slot));
+
+ return 1;
+}
+
+static void rcar_vin_videobuf_queue(struct vb2_buffer *vb)
+{
+ struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_priv *priv = ici->priv;
+ unsigned long size;
+
+ size = icd->sizeimage;
+
+ if (vb2_plane_size(vb, 0) < size) {
+ dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n",
+ vb->v4l2_buf.index, vb2_plane_size(vb, 0), size);
+ goto error;
+ }
+
+ vb2_set_plane_payload(vb, 0, size);
+
+ dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__,
+ vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
+
+ spin_lock_irq(&priv->lock);
+
+ list_add_tail(to_buf_list(vb), &priv->capture);
+ rcar_vin_fill_hw_slot(priv);
+
+ /* If we weren't running, and have enough buffers, start capturing! */
+ if (priv->state != RUNNING && rcar_vin_hw_ready(priv)) {
+ if (rcar_vin_setup(priv)) {
+ /* Submit error */
+ list_del_init(to_buf_list(vb));
+ spin_unlock_irq(&priv->lock);
+ goto error;
+ }
+ priv->request_to_stop = false;
+ init_completion(&priv->capture_stop);
+ priv->state = RUNNING;
+ rcar_vin_capture(priv);
+ }
+
+ spin_unlock_irq(&priv->lock);
+
+ return;
+
+error:
+ vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
+}
+
+static void rcar_vin_videobuf_release(struct vb2_buffer *vb)
+{
+ struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_priv *priv = ici->priv;
+ unsigned int i;
+ int buf_in_use = 0;
+
+ spin_lock_irq(&priv->lock);
+
+ /* Is the buffer in use by the VIN hardware? */
+ for (i = 0; i < MAX_BUFFER_NUM; i++) {
+ if (priv->queue_buf[i] == vb) {
+ buf_in_use = 1;
+ break;
+ }
+ }
+
+ if (buf_in_use) {
+ while (priv->state != STOPPED) {
+
+ /* issue stop if running */
+ if (priv->state == RUNNING)
+ rcar_vin_request_capture_stop(priv);
+
+ /* wait until capturing has been stopped */
+ if (priv->state == STOPPING) {
+ priv->request_to_stop = true;
+ spin_unlock_irq(&priv->lock);
+ wait_for_completion(&priv->capture_stop);
+ spin_lock_irq(&priv->lock);
+ }
+ }
+ /*
+ * Capturing has now stopped. The buffer we have been asked
+ * to release could be any of the current buffers in use, so
+ * release all buffers that are in use by HW
+ */
+ for (i = 0; i < MAX_BUFFER_NUM; i++) {
+ if (priv->queue_buf[i]) {
+ vb2_buffer_done(priv->queue_buf[i],
+ VB2_BUF_STATE_ERROR);
+ priv->queue_buf[i] = NULL;
+ }
+ }
+ } else {
+ list_del_init(to_buf_list(vb));
+ }
+
+ spin_unlock_irq(&priv->lock);
+}
+
+static int rcar_vin_videobuf_init(struct vb2_buffer *vb)
+{
+ INIT_LIST_HEAD(to_buf_list(vb));
+ return 0;
+}
+
+static void rcar_vin_stop_streaming(struct vb2_queue *vq)
+{
+ struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_priv *priv = ici->priv;
+ struct list_head *buf_head, *tmp;
+
+ spin_lock_irq(&priv->lock);
+ list_for_each_safe(buf_head, tmp, &priv->capture)
+ list_del_init(buf_head);
+ spin_unlock_irq(&priv->lock);
+}
+
+static struct vb2_ops rcar_vin_vb2_ops = {
+ .queue_setup = rcar_vin_videobuf_setup,
+ .buf_init = rcar_vin_videobuf_init,
+ .buf_cleanup = rcar_vin_videobuf_release,
+ .buf_queue = rcar_vin_videobuf_queue,
+ .stop_streaming = rcar_vin_stop_streaming,
+ .wait_prepare = soc_camera_unlock,
+ .wait_finish = soc_camera_lock,
+};
+
+static irqreturn_t rcar_vin_irq(int irq, void *data)
+{
+ struct rcar_vin_priv *priv = data;
+ u32 int_status;
+ bool can_run = false, hw_stopped;
+ int slot;
+ unsigned int handled = 0;
+
+ spin_lock(&priv->lock);
+
+ int_status = ioread32(priv->base + VNINTS_REG);
+ if (!int_status)
+ goto done;
+ /* ack interrupts */
+ iowrite32(int_status, priv->base + VNINTS_REG);
+ handled = 1;
+
+ /* nothing to do if capture status is 'STOPPED' */
+ if (priv->state == STOPPED)
+ goto done;
+
+ hw_stopped = !(ioread32(priv->base + VNMS_REG) & VNMS_CA);
+
+ if (!priv->request_to_stop) {
+ if (is_continuous_transfer(priv))
+ slot = (ioread32(priv->base + VNMS_REG) &
+ VNMS_FBS_MASK) >> VNMS_FBS_SHIFT;
+ else
+ slot = 0;
+
+ priv->queue_buf[slot]->v4l2_buf.field = priv->field;
+ priv->queue_buf[slot]->v4l2_buf.sequence = priv->sequence++;
+ do_gettimeofday(&priv->queue_buf[slot]->v4l2_buf.timestamp);
+ vb2_buffer_done(priv->queue_buf[slot], VB2_BUF_STATE_DONE);
+ priv->queue_buf[slot] = NULL;
+
+ if (priv->state != STOPPING)
+ can_run = rcar_vin_fill_hw_slot(priv);
+
+ if (hw_stopped || !can_run) {
+ priv->state = STOPPED;
+ } else if (is_continuous_transfer(priv) &&
+ list_empty(&priv->capture) &&
+ priv->state == RUNNING) {
+ /*
+ * The continuous capturing requires an explicit stop
+ * operation when there is no buffer to be set into
+ * the VnMBm registers.
+ */
+ rcar_vin_request_capture_stop(priv);
+ } else {
+ rcar_vin_capture(priv);
+ }
+
+ } else if (hw_stopped) {
+ priv->state = STOPPED;
+ priv->request_to_stop = false;
+ complete(&priv->capture_stop);
+ }
+
+done:
+ spin_unlock(&priv->lock);
+
+ return IRQ_RETVAL(handled);
+}
+
+static int rcar_vin_add_device(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_priv *priv = ici->priv;
+ int i;
+
+ for (i = 0; i < MAX_BUFFER_NUM; i++)
+ priv->queue_buf[i] = NULL;
+
+ pm_runtime_get_sync(ici->v4l2_dev.dev);
+
+ dev_dbg(icd->parent, "R-Car VIN driver attached to camera %d\n",
+ icd->devnum);
+
+ return 0;
+}
+
+static void rcar_vin_remove_device(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_priv *priv = ici->priv;
+ struct vb2_buffer *vb;
+ int i;
+
+ /* disable capture, disable interrupts */
+ iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME,
+ priv->base + VNMC_REG);
+ iowrite32(0, priv->base + VNIE_REG);
+
+ priv->state = STOPPED;
+ priv->request_to_stop = false;
+
+ /* make sure active buffer is cancelled */
+ spin_lock_irq(&priv->lock);
+ for (i = 0; i < MAX_BUFFER_NUM; i++) {
+ vb = priv->queue_buf[i];
+ if (vb) {
+ list_del_init(to_buf_list(vb));
+ vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
+ }
+ }
+ spin_unlock_irq(&priv->lock);
+
+ pm_runtime_put(ici->v4l2_dev.dev);
+
+ dev_dbg(icd->parent, "R-Car VIN driver detached from camera %d\n",
+ icd->devnum);
+}
+
+/* Called with .host_lock held */
+static int rcar_vin_clock_start(struct soc_camera_host *ici)
+{
+ /* VIN does not have "mclk" */
+ return 0;
+}
+
+/* Called with .host_lock held */
+static void rcar_vin_clock_stop(struct soc_camera_host *ici)
+{
+ /* VIN does not have "mclk" */
+}
+
+/* rect is guaranteed to not exceed the scaled camera rectangle */
+static int rcar_vin_set_rect(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_cam *cam = icd->host_priv;
+ struct rcar_vin_priv *priv = ici->priv;
+ unsigned int left_offset, top_offset;
+ unsigned char dsize = 0;
+ struct v4l2_rect *cam_subrect = &cam->subrect;
+
+ dev_dbg(icd->parent, "Crop %ux%u@%u:%u\n",
+ icd->user_width, icd->user_height, cam->vin_left, cam->vin_top);
+
+ left_offset = cam->vin_left;
+ top_offset = cam->vin_top;
+
+ if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_RGB32 &&
+ priv->chip == RCAR_E1)
+ dsize = 1;
+
+ dev_dbg(icd->parent, "Cam %ux%u@%u:%u\n",
+ cam->width, cam->height, cam->vin_left, cam->vin_top);
+ dev_dbg(icd->parent, "Cam subrect %ux%u@%u:%u\n",
+ cam_subrect->width, cam_subrect->height,
+ cam_subrect->left, cam_subrect->top);
+
+ /* Set Start/End Pixel/Line Pre-Clip */
+ iowrite32(left_offset << dsize, priv->base + VNSPPRC_REG);
+ iowrite32((left_offset + cam->width - 1) << dsize,
+ priv->base + VNEPPRC_REG);
+ switch (priv->field) {
+ case V4L2_FIELD_INTERLACED:
+ case V4L2_FIELD_INTERLACED_TB:
+ case V4L2_FIELD_INTERLACED_BT:
+ iowrite32(top_offset / 2, priv->base + VNSLPRC_REG);
+ iowrite32((top_offset + cam->height) / 2 - 1,
+ priv->base + VNELPRC_REG);
+ break;
+ default:
+ iowrite32(top_offset, priv->base + VNSLPRC_REG);
+ iowrite32(top_offset + cam->height - 1,
+ priv->base + VNELPRC_REG);
+ break;
+ }
+
+ /* Set Start/End Pixel/Line Post-Clip */
+ iowrite32(0, priv->base + VNSPPOC_REG);
+ iowrite32(0, priv->base + VNSLPOC_REG);
+ iowrite32((cam_subrect->width - 1) << dsize, priv->base + VNEPPOC_REG);
+ switch (priv->field) {
+ case V4L2_FIELD_INTERLACED:
+ case V4L2_FIELD_INTERLACED_TB:
+ case V4L2_FIELD_INTERLACED_BT:
+ iowrite32(cam_subrect->height / 2 - 1,
+ priv->base + VNELPOC_REG);
+ break;
+ default:
+ iowrite32(cam_subrect->height - 1, priv->base + VNELPOC_REG);
+ break;
+ }
+
+ iowrite32(ALIGN(cam->width, 0x10), priv->base + VNIS_REG);
+
+ return 0;
+}
+
+static void capture_stop_preserve(struct rcar_vin_priv *priv, u32 *vnmc)
+{
+ *vnmc = ioread32(priv->base + VNMC_REG);
+ /* module disable */
+ iowrite32(*vnmc & ~VNMC_ME, priv->base + VNMC_REG);
+}
+
+static void capture_restore(struct rcar_vin_priv *priv, u32 vnmc)
+{
+ unsigned long timeout = jiffies + 10 * HZ;
+
+ /*
+ * Wait until the end of the current frame. It can take a long time,
+ * but if it has been aborted by a MRST1 reset, it should exit sooner.
+ */
+ while ((ioread32(priv->base + VNMS_REG) & VNMS_AV) &&
+ time_before(jiffies, timeout))
+ msleep(1);
+
+ if (time_after(jiffies, timeout)) {
+ dev_err(priv->ici.v4l2_dev.dev,
+ "Timeout waiting for frame end! Interface problem?\n");
+ return;
+ }
+
+ iowrite32(vnmc, priv->base + VNMC_REG);
+}
+
+#define VIN_MBUS_FLAGS (V4L2_MBUS_MASTER | \
+ V4L2_MBUS_PCLK_SAMPLE_RISING | \
+ V4L2_MBUS_HSYNC_ACTIVE_HIGH | \
+ V4L2_MBUS_HSYNC_ACTIVE_LOW | \
+ V4L2_MBUS_VSYNC_ACTIVE_HIGH | \
+ V4L2_MBUS_VSYNC_ACTIVE_LOW | \
+ V4L2_MBUS_DATA_ACTIVE_HIGH)
+
+static int rcar_vin_set_bus_param(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_priv *priv = ici->priv;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct v4l2_mbus_config cfg;
+ unsigned long common_flags;
+ u32 vnmc;
+ u32 val;
+ int ret;
+
+ capture_stop_preserve(priv, &vnmc);
+
+ ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
+ if (!ret) {
+ common_flags = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS);
+ if (!common_flags) {
+ dev_warn(icd->parent,
+ "MBUS flags incompatible: camera 0x%x, host 0x%x\n",
+ cfg.flags, VIN_MBUS_FLAGS);
+ return -EINVAL;
+ }
+ } else if (ret != -ENOIOCTLCMD) {
+ return ret;
+ } else {
+ common_flags = VIN_MBUS_FLAGS;
+ }
+
+ /* Make choises, based on platform preferences */
+ if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) &&
+ (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) {
+ if (priv->pdata->flags & RCAR_VIN_HSYNC_ACTIVE_LOW)
+ common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH;
+ else
+ common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW;
+ }
+
+ if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
+ (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
+ if (priv->pdata->flags & RCAR_VIN_VSYNC_ACTIVE_LOW)
+ common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
+ else
+ common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
+ }
+
+ cfg.flags = common_flags;
+ ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg);
+ if (ret < 0 && ret != -ENOIOCTLCMD)
+ return ret;
+
+ val = priv->field == V4L2_FIELD_NONE ? VNDMR2_FTEV : 0;
+ if (!(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW))
+ val |= VNDMR2_VPS;
+ if (!(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW))
+ val |= VNDMR2_HPS;
+ iowrite32(val, priv->base + VNDMR2_REG);
+
+ ret = rcar_vin_set_rect(icd);
+ if (ret < 0)
+ return ret;
+
+ capture_restore(priv, vnmc);
+
+ return 0;
+}
+
+static int rcar_vin_try_bus_param(struct soc_camera_device *icd,
+ unsigned char buswidth)
+{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct v4l2_mbus_config cfg;
+ int ret;
+
+ ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
+ if (ret == -ENOIOCTLCMD)
+ return 0;
+ else if (ret)
+ return ret;
+
+ if (buswidth > 24)
+ return -EINVAL;
+
+ /* check is there common mbus flags */
+ ret = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS);
+ if (ret)
+ return 0;
+
+ dev_warn(icd->parent,
+ "MBUS flags incompatible: camera 0x%x, host 0x%x\n",
+ cfg.flags, VIN_MBUS_FLAGS);
+
+ return -EINVAL;
+}
+
+static bool rcar_vin_packing_supported(const struct soc_mbus_pixelfmt *fmt)
+{
+ return fmt->packing == SOC_MBUS_PACKING_NONE ||
+ (fmt->bits_per_sample > 8 &&
+ fmt->packing == SOC_MBUS_PACKING_EXTEND16);
+}
+
+static const struct soc_mbus_pixelfmt rcar_vin_formats[] = {
+ {
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .name = "NV16",
+ .bits_per_sample = 8,
+ .packing = SOC_MBUS_PACKING_2X8_PADHI,
+ .order = SOC_MBUS_ORDER_LE,
+ .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .name = "UYVY",
+ .bits_per_sample = 16,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
+ .layout = SOC_MBUS_LAYOUT_PACKED,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_RGB565,
+ .name = "RGB565",
+ .bits_per_sample = 16,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
+ .layout = SOC_MBUS_LAYOUT_PACKED,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_RGB555X,
+ .name = "ARGB1555",
+ .bits_per_sample = 16,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
+ .layout = SOC_MBUS_LAYOUT_PACKED,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_RGB32,
+ .name = "RGB888",
+ .bits_per_sample = 32,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
+ .layout = SOC_MBUS_LAYOUT_PACKED,
+ },
+};
+
+static int rcar_vin_get_formats(struct soc_camera_device *icd, unsigned int idx,
+ struct soc_camera_format_xlate *xlate)
+{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct device *dev = icd->parent;
+ int ret, k, n;
+ int formats = 0;
+ struct rcar_vin_cam *cam;
+ enum v4l2_mbus_pixelcode code;
+ const struct soc_mbus_pixelfmt *fmt;
+
+ ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code);
+ if (ret < 0)
+ return 0;
+
+ fmt = soc_mbus_get_fmtdesc(code);
+ if (!fmt) {
+ dev_warn(dev, "unsupported format code #%u: %d\n", idx, code);
+ return 0;
+ }
+
+ ret = rcar_vin_try_bus_param(icd, fmt->bits_per_sample);
+ if (ret < 0)
+ return 0;
+
+ if (!icd->host_priv) {
+ struct v4l2_mbus_framefmt mf;
+ struct v4l2_rect rect;
+ struct device *dev = icd->parent;
+ int shift;
+
+ ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
+
+ /* Cache current client geometry */
+ ret = soc_camera_client_g_rect(sd, &rect);
+ if (ret == -ENOIOCTLCMD) {
+ /* Sensor driver doesn't support cropping */
+ rect.left = 0;
+ rect.top = 0;
+ rect.width = mf.width;
+ rect.height = mf.height;
+ } else if (ret < 0) {
+ return ret;
+ }
+
+ /*
+ * If sensor proposes too large format then try smaller ones:
+ * 1280x960, 640x480, 320x240
+ */
+ for (shift = 0; shift < 3; shift++) {
+ if (mf.width <= VIN_MAX_WIDTH &&
+ mf.height <= VIN_MAX_HEIGHT)
+ break;
+
+ mf.width = 1280 >> shift;
+ mf.height = 960 >> shift;
+ ret = v4l2_device_call_until_err(sd->v4l2_dev,
+ soc_camera_grp_id(icd),
+ video, s_mbus_fmt,
+ &mf);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (shift == 3) {
+ dev_err(dev,
+ "Failed to configure the client below %ux%x\n",
+ mf.width, mf.height);
+ return -EIO;
+ }
+
+ dev_dbg(dev, "camera fmt %ux%u\n", mf.width, mf.height);
+
+ cam = kzalloc(sizeof(*cam), GFP_KERNEL);
+ if (!cam)
+ return -ENOMEM;
+ /*
+ * We are called with current camera crop,
+ * initialise subrect with it
+ */
+ cam->rect = rect;
+ cam->subrect = rect;
+ cam->width = mf.width;
+ cam->height = mf.height;
+
+ icd->host_priv = cam;
+ } else {
+ cam = icd->host_priv;
+ }
+
+ /* Beginning of a pass */
+ if (!idx)
+ cam->extra_fmt = NULL;
+
+ switch (code) {
+ case V4L2_MBUS_FMT_YUYV8_1X16:
+ case V4L2_MBUS_FMT_YUYV8_2X8:
+ case V4L2_MBUS_FMT_YUYV10_2X10:
+ if (cam->extra_fmt)
+ break;
+
+ /* Add all our formats that can be generated by VIN */
+ cam->extra_fmt = rcar_vin_formats;
+
+ n = ARRAY_SIZE(rcar_vin_formats);
+ formats += n;
+ for (k = 0; xlate && k < n; k++, xlate++) {
+ xlate->host_fmt = &rcar_vin_formats[k];
+ xlate->code = code;
+ dev_dbg(dev, "Providing format %s using code %d\n",
+ rcar_vin_formats[k].name, code);
+ }
+ break;
+ default:
+ if (!rcar_vin_packing_supported(fmt))
+ return 0;
+
+ dev_dbg(dev, "Providing format %s in pass-through mode\n",
+ fmt->name);
+ break;
+ }
+
+ /* Generic pass-through */
+ formats++;
+ if (xlate) {
+ xlate->host_fmt = fmt;
+ xlate->code = code;
+ xlate++;
+ }
+
+ return formats;
+}
+
+static void rcar_vin_put_formats(struct soc_camera_device *icd)
+{
+ kfree(icd->host_priv);
+ icd->host_priv = NULL;
+}
+
+static int rcar_vin_set_crop(struct soc_camera_device *icd,
+ const struct v4l2_crop *a)
+{
+ struct v4l2_crop a_writable = *a;
+ const struct v4l2_rect *rect = &a_writable.c;
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_priv *priv = ici->priv;
+ struct v4l2_crop cam_crop;
+ struct rcar_vin_cam *cam = icd->host_priv;
+ struct v4l2_rect *cam_rect = &cam_crop.c;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct device *dev = icd->parent;
+ struct v4l2_mbus_framefmt mf;
+ u32 vnmc;
+ int ret, i;
+
+ dev_dbg(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height,
+ rect->left, rect->top);
+
+ /* During camera cropping its output window can change too, stop VIN */
+ capture_stop_preserve(priv, &vnmc);
+ dev_dbg(dev, "VNMC_REG 0x%x\n", vnmc);
+
+ /* Apply iterative camera S_CROP for new input window. */
+ ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop,
+ &cam->rect, &cam->subrect);
+ if (ret < 0)
+ return ret;
+
+ dev_dbg(dev, "camera cropped to %ux%u@%u:%u\n",
+ cam_rect->width, cam_rect->height,
+ cam_rect->left, cam_rect->top);
+
+ /* On success cam_crop contains current camera crop */
+
+ /* Retrieve camera output window */
+ ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
+
+ if (mf.width > VIN_MAX_WIDTH || mf.height > VIN_MAX_HEIGHT)
+ return -EINVAL;
+
+ /* Cache camera output window */
+ cam->width = mf.width;
+ cam->height = mf.height;
+
+ icd->user_width = cam->width;
+ icd->user_height = cam->height;
+
+ cam->vin_left = rect->left & ~1;
+ cam->vin_top = rect->top & ~1;
+
+ /* Use VIN cropping to crop to the new window. */
+ ret = rcar_vin_set_rect(icd);
+ if (ret < 0)
+ return ret;
+
+ cam->subrect = *rect;
+
+ dev_dbg(dev, "VIN cropped to %ux%u@%u:%u\n",
+ icd->user_width, icd->user_height,
+ cam->vin_left, cam->vin_top);
+
+ /* Restore capture */
+ for (i = 0; i < MAX_BUFFER_NUM; i++) {
+ if (priv->queue_buf[i] && priv->state == STOPPED) {
+ vnmc |= VNMC_ME;
+ break;
+ }
+ }
+ capture_restore(priv, vnmc);
+
+ /* Even if only camera cropping succeeded */
+ return ret;
+}
+
+static int rcar_vin_get_crop(struct soc_camera_device *icd,
+ struct v4l2_crop *a)
+{
+ struct rcar_vin_cam *cam = icd->host_priv;
+
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ a->c = cam->subrect;
+
+ return 0;
+}
+
+/* Similar to set_crop multistage iterative algorithm */
+static int rcar_vin_set_fmt(struct soc_camera_device *icd,
+ struct v4l2_format *f)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct rcar_vin_priv *priv = ici->priv;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct rcar_vin_cam *cam = icd->host_priv;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct v4l2_mbus_framefmt mf;
+ struct device *dev = icd->parent;
+ __u32 pixfmt = pix->pixelformat;
+ const struct soc_camera_format_xlate *xlate;
+ unsigned int vin_sub_width = 0, vin_sub_height = 0;
+ int ret;
+ bool can_scale;
+ enum v4l2_field field;
+ v4l2_std_id std;
+
+ dev_dbg(dev, "S_FMT(pix=0x%x, %ux%u)\n",
+ pixfmt, pix->width, pix->height);
+
+ switch (pix->field) {
+ default:
+ pix->field = V4L2_FIELD_NONE;
+ /* fall-through */
+ case V4L2_FIELD_NONE:
+ case V4L2_FIELD_TOP:
+ case V4L2_FIELD_BOTTOM:
+ case V4L2_FIELD_INTERLACED_TB:
+ case V4L2_FIELD_INTERLACED_BT:
+ field = pix->field;
+ break;
+ case V4L2_FIELD_INTERLACED:
+ /* Query for standard if not explicitly mentioned _TB/_BT */
+ ret = v4l2_subdev_call(sd, video, querystd, &std);
+ if (ret < 0)
+ std = V4L2_STD_625_50;
+
+ field = std & V4L2_STD_625_50 ? V4L2_FIELD_INTERLACED_TB :
+ V4L2_FIELD_INTERLACED_BT;
+ break;
+ }
+
+ xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
+ if (!xlate) {
+ dev_warn(dev, "Format %x not found\n", pixfmt);
+ return -EINVAL;
+ }
+ /* Calculate client output geometry */
+ soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf,
+ 12);
+ mf.field = pix->field;
+ mf.colorspace = pix->colorspace;
+ mf.code = xlate->code;
+
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_RGB32:
+ can_scale = priv->chip != RCAR_E1;
+ break;
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_RGB555X:
+ can_scale = true;
+ break;
+ default:
+ can_scale = false;
+ break;
+ }
+
+ dev_dbg(dev, "request camera output %ux%u\n", mf.width, mf.height);
+
+ ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect,
+ &mf, &vin_sub_width, &vin_sub_height,
+ can_scale, 12);
+
+ /* Done with the camera. Now see if we can improve the result */
+ dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n",
+ ret, mf.width, mf.height, pix->width, pix->height);
+
+ if (ret == -ENOIOCTLCMD)
+ dev_dbg(dev, "Sensor doesn't support scaling\n");
+ else if (ret < 0)
+ return ret;
+
+ if (mf.code != xlate->code)
+ return -EINVAL;
+
+ /* Prepare VIN crop */
+ cam->width = mf.width;
+ cam->height = mf.height;
+
+ /* Use VIN scaling to scale to the requested user window. */
+
+ /* We cannot scale up */
+ if (pix->width > vin_sub_width)
+ vin_sub_width = pix->width;
+
+ if (pix->height > vin_sub_height)
+ vin_sub_height = pix->height;
+
+ pix->colorspace = mf.colorspace;
+
+ if (!can_scale) {
+ pix->width = vin_sub_width;
+ pix->height = vin_sub_height;
+ }
+
+ /*
+ * We have calculated CFLCR, the actual configuration will be performed
+ * in rcar_vin_set_bus_param()
+ */
+
+ dev_dbg(dev, "W: %u : %u, H: %u : %u\n",
+ vin_sub_width, pix->width, vin_sub_height, pix->height);
+
+ icd->current_fmt = xlate;
+
+ priv->field = field;
+
+ return 0;
+}
+
+static int rcar_vin_try_fmt(struct soc_camera_device *icd,
+ struct v4l2_format *f)
+{
+ const struct soc_camera_format_xlate *xlate;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct v4l2_mbus_framefmt mf;
+ __u32 pixfmt = pix->pixelformat;
+ int width, height;
+ int ret;
+
+ xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
+ if (!xlate) {
+ xlate = icd->current_fmt;
+ dev_dbg(icd->parent, "Format %x not found, keeping %x\n",
+ pixfmt, xlate->host_fmt->fourcc);
+ pixfmt = xlate->host_fmt->fourcc;
+ pix->pixelformat = pixfmt;
+ pix->colorspace = icd->colorspace;
+ }
+
+ /* FIXME: calculate using depth and bus width */
+ v4l_bound_align_image(&pix->width, 2, VIN_MAX_WIDTH, 1,
+ &pix->height, 4, VIN_MAX_HEIGHT, 2, 0);
+
+ width = pix->width;
+ height = pix->height;
+
+ /* let soc-camera calculate these values */
+ pix->bytesperline = 0;
+ pix->sizeimage = 0;
+
+ /* limit to sensor capabilities */
+ mf.width = pix->width;
+ mf.height = pix->height;
+ mf.field = pix->field;
+ mf.code = xlate->code;
+ mf.colorspace = pix->colorspace;
+
+ ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd),
+ video, try_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
+
+ pix->width = mf.width;
+ pix->height = mf.height;
+ pix->field = mf.field;
+ pix->colorspace = mf.colorspace;
+
+ if (pixfmt == V4L2_PIX_FMT_NV16) {
+ /* FIXME: check against rect_max after converting soc-camera */
+ /* We can scale precisely, need a bigger image from camera */
+ if (pix->width < width || pix->height < height) {
+ /*
+ * We presume, the sensor behaves sanely, i.e. if
+ * requested a bigger rectangle, it will not return a
+ * smaller one.
+ */
+ mf.width = VIN_MAX_WIDTH;
+ mf.height = VIN_MAX_HEIGHT;
+ ret = v4l2_device_call_until_err(sd->v4l2_dev,
+ soc_camera_grp_id(icd),
+ video, try_mbus_fmt,
+ &mf);
+ if (ret < 0) {
+ dev_err(icd->parent,
+ "client try_fmt() = %d\n", ret);
+ return ret;
+ }
+ }
+ /* We will scale exactly */
+ if (mf.width > width)
+ pix->width = width;
+ if (mf.height > height)
+ pix->height = height;
+ }
+
+ return ret;
+}
+
+static unsigned int rcar_vin_poll(struct file *file, poll_table *pt)
+{
+ struct soc_camera_device *icd = file->private_data;
+
+ return vb2_poll(&icd->vb2_vidq, file, pt);
+}
+
+static int rcar_vin_querycap(struct soc_camera_host *ici,
+ struct v4l2_capability *cap)
+{
+ strlcpy(cap->card, "R_Car_VIN", sizeof(cap->card));
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+ return 0;
+}
+
+static int rcar_vin_init_videobuf2(struct vb2_queue *vq,
+ struct soc_camera_device *icd)
+{
+ vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ vq->drv_priv = icd;
+ vq->ops = &rcar_vin_vb2_ops;
+ vq->mem_ops = &vb2_dma_contig_memops;
+ vq->buf_struct_size = sizeof(struct rcar_vin_buffer);
+ vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+
+ return vb2_queue_init(vq);
+}
+
+static struct soc_camera_host_ops rcar_vin_host_ops = {
+ .owner = THIS_MODULE,
+ .add = rcar_vin_add_device,
+ .remove = rcar_vin_remove_device,
+ .clock_start = rcar_vin_clock_start,
+ .clock_stop = rcar_vin_clock_stop,
+ .get_formats = rcar_vin_get_formats,
+ .put_formats = rcar_vin_put_formats,
+ .get_crop = rcar_vin_get_crop,
+ .set_crop = rcar_vin_set_crop,
+ .try_fmt = rcar_vin_try_fmt,
+ .set_fmt = rcar_vin_set_fmt,
+ .poll = rcar_vin_poll,
+ .querycap = rcar_vin_querycap,
+ .set_bus_param = rcar_vin_set_bus_param,
+ .init_videobuf2 = rcar_vin_init_videobuf2,
+};
+
+static struct platform_device_id rcar_vin_id_table[] = {
+ { "r8a7791-vin", RCAR_GEN2 },
+ { "r8a7790-vin", RCAR_GEN2 },
+ { "r8a7779-vin", RCAR_H1 },
+ { "r8a7778-vin", RCAR_M1 },
+ { "uPD35004-vin", RCAR_E1 },
+ {},
+};
+MODULE_DEVICE_TABLE(platform, rcar_vin_id_table);
+
+static int rcar_vin_probe(struct platform_device *pdev)
+{
+ struct rcar_vin_priv *priv;
+ struct resource *mem;
+ struct rcar_vin_platform_data *pdata;
+ int irq, ret;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata || !pdata->flags) {
+ dev_err(&pdev->dev, "platform data not set\n");
+ return -EINVAL;
+ }
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (mem == NULL)
+ return -EINVAL;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq <= 0)
+ return -EINVAL;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(struct rcar_vin_priv),
+ GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->base = devm_ioremap_resource(&pdev->dev, mem);
+ if (IS_ERR(priv->base))
+ return PTR_ERR(priv->base);
+
+ ret = devm_request_irq(&pdev->dev, irq, rcar_vin_irq, IRQF_SHARED,
+ dev_name(&pdev->dev), priv);
+ if (ret)
+ return ret;
+
+ priv->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
+ if (IS_ERR(priv->alloc_ctx))
+ return PTR_ERR(priv->alloc_ctx);
+
+ priv->ici.priv = priv;
+ priv->ici.v4l2_dev.dev = &pdev->dev;
+ priv->ici.nr = pdev->id;
+ priv->ici.drv_name = dev_name(&pdev->dev);
+ priv->ici.ops = &rcar_vin_host_ops;
+
+ priv->pdata = pdata;
+ priv->chip = pdev->id_entry->driver_data;
+ spin_lock_init(&priv->lock);
+ INIT_LIST_HEAD(&priv->capture);
+
+ priv->state = STOPPED;
+
+ pm_suspend_ignore_children(&pdev->dev, true);
+ pm_runtime_enable(&pdev->dev);
+
+ ret = soc_camera_host_register(&priv->ici);
+ if (ret)
+ goto cleanup;
+
+ return 0;
+
+cleanup:
+ pm_runtime_disable(&pdev->dev);
+ vb2_dma_contig_cleanup_ctx(priv->alloc_ctx);
+
+ return ret;
+}
+
+static int rcar_vin_remove(struct platform_device *pdev)
+{
+ struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
+ struct rcar_vin_priv *priv = container_of(soc_host,
+ struct rcar_vin_priv, ici);
+
+ soc_camera_host_unregister(soc_host);
+ pm_runtime_disable(&pdev->dev);
+ vb2_dma_contig_cleanup_ctx(priv->alloc_ctx);
+
+ return 0;
+}
+
+static struct platform_driver rcar_vin_driver = {
+ .probe = rcar_vin_probe,
+ .remove = rcar_vin_remove,
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .id_table = rcar_vin_id_table,
+};
+
+module_platform_driver(rcar_vin_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:rcar_vin");
+MODULE_DESCRIPTION("Renesas R-Car VIN camera host driver");
diff --git a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c
index ebbc126e71a..20ad4a571d3 100644
--- a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c
+++ b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c
@@ -20,12 +20,14 @@
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/moduleparam.h>
+#include <linux/of.h>
#include <linux/time.h>
#include <linux/slab.h>
#include <linux/device.h>
@@ -34,6 +36,7 @@
#include <linux/pm_runtime.h>
#include <linux/sched.h>
+#include <media/v4l2-async.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dev.h>
#include <media/soc_camera.h>
@@ -43,6 +46,8 @@
#include <media/v4l2-mediabus.h>
#include <media/soc_mediabus.h>
+#include "soc_scale_crop.h"
+
/* register offsets for sh7722 / sh7723 */
#define CAPSR 0x00 /* Capture start register */
@@ -94,7 +99,10 @@ struct sh_mobile_ceu_buffer {
struct sh_mobile_ceu_dev {
struct soc_camera_host ici;
- struct soc_camera_device *icd;
+ /* Asynchronous CSI2 linking */
+ struct v4l2_async_subdev *csi2_asd;
+ struct v4l2_subdev *csi2_sd;
+ /* Synchronous probing compatibility */
struct platform_device *csi2_pdev;
unsigned int irq;
@@ -118,6 +126,7 @@ struct sh_mobile_ceu_dev {
enum v4l2_field field;
int sequence;
+ unsigned long flags;
unsigned int image_mode:1;
unsigned int is_16bit:1;
@@ -162,7 +171,6 @@ static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs)
static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev)
{
int i, success = 0;
- struct soc_camera_device *icd = pcdev->icd;
ceu_write(pcdev, CAPSR, 1 << 16); /* reset */
@@ -184,9 +192,8 @@ static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev)
udelay(1);
}
-
if (2 != success) {
- dev_warn(icd->pdev, "soft reset time out\n");
+ dev_warn(pcdev->ici.v4l2_dev.dev, "soft reset time out\n");
return -EIO;
}
@@ -276,7 +283,7 @@ static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq,
*/
static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
{
- struct soc_camera_device *icd = pcdev->icd;
+ struct soc_camera_device *icd = pcdev->ici.icd;
dma_addr_t phys_addr_top, phys_addr_bottom;
unsigned long top1, top2;
unsigned long bottom1, bottom2;
@@ -464,7 +471,7 @@ static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb)
return 0;
}
-static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q)
+static void sh_mobile_ceu_stop_streaming(struct vb2_queue *q)
{
struct soc_camera_device *icd = container_of(q, struct soc_camera_device, vb2_vidq);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
@@ -480,7 +487,7 @@ static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q)
spin_unlock_irq(&pcdev->lock);
- return sh_mobile_ceu_soft_reset(pcdev);
+ sh_mobile_ceu_soft_reset(pcdev);
}
static struct vb2_ops sh_mobile_ceu_videobuf_ops = {
@@ -516,7 +523,7 @@ static irqreturn_t sh_mobile_ceu_irq(int irq, void *data)
pcdev->active = NULL;
ret = sh_mobile_ceu_capture(pcdev);
- do_gettimeofday(&vb->v4l2_buf.timestamp);
+ v4l2_get_timestamp(&vb->v4l2_buf.timestamp);
if (!ret) {
vb->v4l2_buf.field = pcdev->field;
vb->v4l2_buf.sequence = pcdev->sequence++;
@@ -533,72 +540,91 @@ static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev)
{
struct v4l2_subdev *sd;
- if (!pcdev->csi2_pdev)
- return NULL;
+ if (pcdev->csi2_sd)
+ return pcdev->csi2_sd;
- v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev)
- if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd))
- return sd;
+ if (pcdev->csi2_asd) {
+ char name[] = "sh-mobile-csi2";
+ v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev)
+ if (!strncmp(name, sd->name, sizeof(name) - 1)) {
+ pcdev->csi2_sd = sd;
+ return sd;
+ }
+ }
return NULL;
}
-/* Called with .video_lock held */
+static struct v4l2_subdev *csi2_subdev(struct sh_mobile_ceu_dev *pcdev,
+ struct soc_camera_device *icd)
+{
+ struct v4l2_subdev *sd = pcdev->csi2_sd;
+
+ return sd && sd->grp_id == soc_camera_grp_id(icd) ? sd : NULL;
+}
+
static int sh_mobile_ceu_add_device(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
- struct v4l2_subdev *csi2_sd;
+ struct v4l2_subdev *csi2_sd = find_csi2(pcdev);
int ret;
- if (pcdev->icd)
- return -EBUSY;
-
- dev_info(icd->parent,
- "SuperH Mobile CEU driver attached to camera %d\n",
- icd->devnum);
-
- pm_runtime_get_sync(ici->v4l2_dev.dev);
-
- pcdev->buf_total = 0;
-
- ret = sh_mobile_ceu_soft_reset(pcdev);
-
- csi2_sd = find_csi2(pcdev);
if (csi2_sd) {
csi2_sd->grp_id = soc_camera_grp_id(icd);
v4l2_set_subdev_hostdata(csi2_sd, icd);
}
ret = v4l2_subdev_call(csi2_sd, core, s_power, 1);
- if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) {
- pm_runtime_put_sync(ici->v4l2_dev.dev);
+ if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
return ret;
- }
/*
* -ENODEV is special: either csi2_sd == NULL or the CSI-2 driver
* has not found this soc-camera device among its clients
*/
- if (ret == -ENODEV && csi2_sd)
+ if (csi2_sd && ret == -ENODEV)
csi2_sd->grp_id = 0;
- pcdev->icd = icd;
+
+ dev_info(icd->parent,
+ "SuperH Mobile CEU%s driver attached to camera %d\n",
+ csi2_sd && csi2_sd->grp_id ? "/CSI-2" : "", icd->devnum);
return 0;
}
-/* Called with .video_lock held */
static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
struct v4l2_subdev *csi2_sd = find_csi2(pcdev);
- BUG_ON(icd != pcdev->icd);
+ dev_info(icd->parent,
+ "SuperH Mobile CEU driver detached from camera %d\n",
+ icd->devnum);
v4l2_subdev_call(csi2_sd, core, s_power, 0);
- if (csi2_sd)
- csi2_sd->grp_id = 0;
+}
+
+/* Called with .host_lock held */
+static int sh_mobile_ceu_clock_start(struct soc_camera_host *ici)
+{
+ struct sh_mobile_ceu_dev *pcdev = ici->priv;
+
+ pm_runtime_get_sync(ici->v4l2_dev.dev);
+
+ pcdev->buf_total = 0;
+
+ sh_mobile_ceu_soft_reset(pcdev);
+
+ return 0;
+}
+
+/* Called with .host_lock held */
+static void sh_mobile_ceu_clock_stop(struct soc_camera_host *ici)
+{
+ struct sh_mobile_ceu_dev *pcdev = ici->priv;
+
/* disable capture, disable interrupts */
ceu_write(pcdev, CEIER, 0);
sh_mobile_ceu_soft_reset(pcdev);
@@ -612,13 +638,7 @@ static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd)
}
spin_unlock_irq(&pcdev->lock);
- pm_runtime_put_sync(ici->v4l2_dev.dev);
-
- dev_info(icd->parent,
- "SuperH Mobile CEU driver detached from camera %d\n",
- icd->devnum);
-
- pcdev->icd = NULL;
+ pm_runtime_put(ici->v4l2_dev.dev);
}
/*
@@ -704,7 +724,7 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd)
}
/* CSI2 special configuration */
- if (pcdev->pdata->csi2) {
+ if (csi2_subdev(pcdev, icd)) {
in_width = ((in_width - 2) * 2);
left_offset *= 2;
}
@@ -761,13 +781,7 @@ static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr)
static struct v4l2_subdev *find_bus_subdev(struct sh_mobile_ceu_dev *pcdev,
struct soc_camera_device *icd)
{
- if (pcdev->csi2_pdev) {
- struct v4l2_subdev *csi2_sd = find_csi2(pcdev);
- if (csi2_sd && csi2_sd->grp_id == soc_camera_grp_id(icd))
- return csi2_sd;
- }
-
- return soc_camera_to_subdev(icd);
+ return csi2_subdev(pcdev, icd) ? : soc_camera_to_subdev(icd);
}
#define CEU_BUS_FLAGS (V4L2_MBUS_MASTER | \
@@ -808,7 +822,7 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd)
/* Make choises, based on platform preferences */
if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) &&
(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) {
- if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW)
+ if (pcdev->flags & SH_CEU_FLAG_HSYNC_LOW)
common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH;
else
common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW;
@@ -816,7 +830,7 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd)
if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
- if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW)
+ if (pcdev->flags & SH_CEU_FLAG_VSYNC_LOW)
common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
else
common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
@@ -871,11 +885,11 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd)
value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0;
value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0;
- if (pcdev->pdata->csi2) /* CSI2 mode */
+ if (csi2_subdev(pcdev, icd)) /* CSI2 mode */
value |= 3 << 12;
else if (pcdev->is_16bit)
value |= 1 << 12;
- else if (pcdev->pdata->flags & SH_CEU_FLAG_LOWER_8BIT)
+ else if (pcdev->flags & SH_CEU_FLAG_LOWER_8BIT)
value |= 2 << 12;
ceu_write(pcdev, CAMCR, value);
@@ -992,8 +1006,6 @@ static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt)
fmt->packing == SOC_MBUS_PACKING_EXTEND16);
}
-static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect);
-
static struct soc_camera_device *ctrl_to_icd(struct v4l2_ctrl *ctrl)
{
return container_of(ctrl->handler, struct soc_camera_device,
@@ -1050,7 +1062,7 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int
return 0;
}
- if (!pcdev->pdata->csi2) {
+ if (!csi2_subdev(pcdev, icd)) {
/* Are there any restrictions in the CSI-2 case? */
ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample);
if (ret < 0)
@@ -1064,14 +1076,14 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int
/* Add our control */
v4l2_ctrl_new_std(&icd->ctrl_handler, &sh_mobile_ceu_ctrl_ops,
- V4L2_CID_SHARPNESS, 0, 1, 1, 0);
+ V4L2_CID_SHARPNESS, 0, 1, 1, 1);
if (icd->ctrl_handler.error)
return icd->ctrl_handler.error;
/* FIXME: subwindow is lost between close / open */
/* Cache current client geometry */
- ret = client_g_rect(sd, &rect);
+ ret = soc_camera_client_g_rect(sd, &rect);
if (ret < 0)
return ret;
@@ -1181,334 +1193,8 @@ static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd)
icd->host_priv = NULL;
}
-/* Check if any dimension of r1 is smaller than respective one of r2 */
-static bool is_smaller(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
-{
- return r1->width < r2->width || r1->height < r2->height;
-}
-
-/* Check if r1 fails to cover r2 */
-static bool is_inside(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
-{
- return r1->left > r2->left || r1->top > r2->top ||
- r1->left + r1->width < r2->left + r2->width ||
- r1->top + r1->height < r2->top + r2->height;
-}
-
-static unsigned int scale_down(unsigned int size, unsigned int scale)
-{
- return (size * 4096 + scale / 2) / scale;
-}
-
-static unsigned int calc_generic_scale(unsigned int input, unsigned int output)
-{
- return (input * 4096 + output / 2) / output;
-}
-
-/* Get and store current client crop */
-static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect)
-{
- struct v4l2_crop crop;
- struct v4l2_cropcap cap;
- int ret;
-
- crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
- ret = v4l2_subdev_call(sd, video, g_crop, &crop);
- if (!ret) {
- *rect = crop.c;
- return ret;
- }
-
- /* Camera driver doesn't support .g_crop(), assume default rectangle */
- cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
- ret = v4l2_subdev_call(sd, video, cropcap, &cap);
- if (!ret)
- *rect = cap.defrect;
-
- return ret;
-}
-
-/* Client crop has changed, update our sub-rectangle to remain within the area */
-static void update_subrect(struct sh_mobile_ceu_cam *cam)
-{
- struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect;
-
- if (rect->width < subrect->width)
- subrect->width = rect->width;
-
- if (rect->height < subrect->height)
- subrect->height = rect->height;
-
- if (rect->left > subrect->left)
- subrect->left = rect->left;
- else if (rect->left + rect->width >
- subrect->left + subrect->width)
- subrect->left = rect->left + rect->width -
- subrect->width;
-
- if (rect->top > subrect->top)
- subrect->top = rect->top;
- else if (rect->top + rect->height >
- subrect->top + subrect->height)
- subrect->top = rect->top + rect->height -
- subrect->height;
-}
-
-/*
- * The common for both scaling and cropping iterative approach is:
- * 1. try if the client can produce exactly what requested by the user
- * 2. if (1) failed, try to double the client image until we get one big enough
- * 3. if (2) failed, try to request the maximum image
- */
-static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop,
- struct v4l2_crop *cam_crop)
-{
- struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
- struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c;
- struct device *dev = sd->v4l2_dev->dev;
- struct sh_mobile_ceu_cam *cam = icd->host_priv;
- struct v4l2_cropcap cap;
- int ret;
- unsigned int width, height;
-
- v4l2_subdev_call(sd, video, s_crop, crop);
- ret = client_g_rect(sd, cam_rect);
- if (ret < 0)
- return ret;
-
- /*
- * Now cam_crop contains the current camera input rectangle, and it must
- * be within camera cropcap bounds
- */
- if (!memcmp(rect, cam_rect, sizeof(*rect))) {
- /* Even if camera S_CROP failed, but camera rectangle matches */
- dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n",
- rect->width, rect->height, rect->left, rect->top);
- cam->rect = *cam_rect;
- return 0;
- }
-
- /* Try to fix cropping, that camera hasn't managed to set */
- dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n",
- cam_rect->width, cam_rect->height,
- cam_rect->left, cam_rect->top,
- rect->width, rect->height, rect->left, rect->top);
-
- /* We need sensor maximum rectangle */
- ret = v4l2_subdev_call(sd, video, cropcap, &cap);
- if (ret < 0)
- return ret;
-
- /* Put user requested rectangle within sensor bounds */
- soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2,
- cap.bounds.width);
- soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4,
- cap.bounds.height);
-
- /*
- * Popular special case - some cameras can only handle fixed sizes like
- * QVGA, VGA,... Take care to avoid infinite loop.
- */
- width = max(cam_rect->width, 2);
- height = max(cam_rect->height, 2);
-
- /*
- * Loop as long as sensor is not covering the requested rectangle and
- * is still within its bounds
- */
- while (!ret && (is_smaller(cam_rect, rect) ||
- is_inside(cam_rect, rect)) &&
- (cap.bounds.width > width || cap.bounds.height > height)) {
-
- width *= 2;
- height *= 2;
-
- cam_rect->width = width;
- cam_rect->height = height;
-
- /*
- * We do not know what capabilities the camera has to set up
- * left and top borders. We could try to be smarter in iterating
- * them, e.g., if camera current left is to the right of the
- * target left, set it to the middle point between the current
- * left and minimum left. But that would add too much
- * complexity: we would have to iterate each border separately.
- * Instead we just drop to the left and top bounds.
- */
- if (cam_rect->left > rect->left)
- cam_rect->left = cap.bounds.left;
-
- if (cam_rect->left + cam_rect->width < rect->left + rect->width)
- cam_rect->width = rect->left + rect->width -
- cam_rect->left;
-
- if (cam_rect->top > rect->top)
- cam_rect->top = cap.bounds.top;
-
- if (cam_rect->top + cam_rect->height < rect->top + rect->height)
- cam_rect->height = rect->top + rect->height -
- cam_rect->top;
-
- v4l2_subdev_call(sd, video, s_crop, cam_crop);
- ret = client_g_rect(sd, cam_rect);
- dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret,
- cam_rect->width, cam_rect->height,
- cam_rect->left, cam_rect->top);
- }
-
- /* S_CROP must not modify the rectangle */
- if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) {
- /*
- * The camera failed to configure a suitable cropping,
- * we cannot use the current rectangle, set to max
- */
- *cam_rect = cap.bounds;
- v4l2_subdev_call(sd, video, s_crop, cam_crop);
- ret = client_g_rect(sd, cam_rect);
- dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret,
- cam_rect->width, cam_rect->height,
- cam_rect->left, cam_rect->top);
- }
-
- if (!ret) {
- cam->rect = *cam_rect;
- update_subrect(cam);
- }
-
- return ret;
-}
-
-/* Iterative s_mbus_fmt, also updates cached client crop on success */
-static int client_s_fmt(struct soc_camera_device *icd,
- struct v4l2_mbus_framefmt *mf, bool ceu_can_scale)
-{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
- struct sh_mobile_ceu_dev *pcdev = ici->priv;
- struct sh_mobile_ceu_cam *cam = icd->host_priv;
- struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
- struct device *dev = icd->parent;
- unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h;
- unsigned int max_width, max_height;
- struct v4l2_cropcap cap;
- bool ceu_1to1;
- int ret;
-
- ret = v4l2_device_call_until_err(sd->v4l2_dev,
- soc_camera_grp_id(icd), video,
- s_mbus_fmt, mf);
- if (ret < 0)
- return ret;
-
- dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height);
-
- if (width == mf->width && height == mf->height) {
- /* Perfect! The client has done it all. */
- ceu_1to1 = true;
- goto update_cache;
- }
-
- ceu_1to1 = false;
- if (!ceu_can_scale)
- goto update_cache;
-
- cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-
- ret = v4l2_subdev_call(sd, video, cropcap, &cap);
- if (ret < 0)
- return ret;
-
- max_width = min(cap.bounds.width, pcdev->max_width);
- max_height = min(cap.bounds.height, pcdev->max_height);
-
- /* Camera set a format, but geometry is not precise, try to improve */
- tmp_w = mf->width;
- tmp_h = mf->height;
-
- /* width <= max_width && height <= max_height - guaranteed by try_fmt */
- while ((width > tmp_w || height > tmp_h) &&
- tmp_w < max_width && tmp_h < max_height) {
- tmp_w = min(2 * tmp_w, max_width);
- tmp_h = min(2 * tmp_h, max_height);
- mf->width = tmp_w;
- mf->height = tmp_h;
- ret = v4l2_device_call_until_err(sd->v4l2_dev,
- soc_camera_grp_id(icd), video,
- s_mbus_fmt, mf);
- dev_geo(dev, "Camera scaled to %ux%u\n",
- mf->width, mf->height);
- if (ret < 0) {
- /* This shouldn't happen */
- dev_err(dev, "Client failed to set format: %d\n", ret);
- return ret;
- }
- }
-
-update_cache:
- /* Update cache */
- ret = client_g_rect(sd, &cam->rect);
- if (ret < 0)
- return ret;
-
- if (ceu_1to1)
- cam->subrect = cam->rect;
- else
- update_subrect(cam);
-
- return 0;
-}
-
-/**
- * @width - on output: user width, mapped back to input
- * @height - on output: user height, mapped back to input
- * @mf - in- / output camera output window
- */
-static int client_scale(struct soc_camera_device *icd,
- struct v4l2_mbus_framefmt *mf,
- unsigned int *width, unsigned int *height,
- bool ceu_can_scale)
-{
- struct sh_mobile_ceu_cam *cam = icd->host_priv;
- struct device *dev = icd->parent;
- struct v4l2_mbus_framefmt mf_tmp = *mf;
- unsigned int scale_h, scale_v;
- int ret;
-
- /*
- * 5. Apply iterative camera S_FMT for camera user window (also updates
- * client crop cache and the imaginary sub-rectangle).
- */
- ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale);
- if (ret < 0)
- return ret;
-
- dev_geo(dev, "5: camera scaled to %ux%u\n",
- mf_tmp.width, mf_tmp.height);
-
- /* 6. Retrieve camera output window (g_fmt) */
-
- /* unneeded - it is already in "mf_tmp" */
-
- /* 7. Calculate new client scales. */
- scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width);
- scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height);
-
- mf->width = mf_tmp.width;
- mf->height = mf_tmp.height;
- mf->colorspace = mf_tmp.colorspace;
-
- /*
- * 8. Calculate new CEU crop - apply camera scales to previously
- * updated "effective" crop.
- */
- *width = scale_down(cam->subrect.width, scale_h);
- *height = scale_down(cam->subrect.height, scale_v);
-
- dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height);
-
- return 0;
-}
+#define scale_down(size, scale) soc_camera_shift_scale(size, 12, scale)
+#define calc_generic_scale(in, out) soc_camera_calc_scale(in, 12, out)
/*
* CEU can scale and crop, but we don't want to waste bandwidth and kill the
@@ -1546,7 +1232,8 @@ static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd,
* 1. - 2. Apply iterative camera S_CROP for new input window, read back
* actual camera rectangle.
*/
- ret = client_s_crop(icd, &a_writable, &cam_crop);
+ ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop,
+ &cam->rect, &cam->subrect);
if (ret < 0)
return ret;
@@ -1665,55 +1352,6 @@ static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd,
return 0;
}
-/*
- * Calculate real client output window by applying new scales to the current
- * client crop. New scales are calculated from the requested output format and
- * CEU crop, mapped backed onto the client input (subrect).
- */
-static void calculate_client_output(struct soc_camera_device *icd,
- const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf)
-{
- struct sh_mobile_ceu_cam *cam = icd->host_priv;
- struct device *dev = icd->parent;
- struct v4l2_rect *cam_subrect = &cam->subrect;
- unsigned int scale_v, scale_h;
-
- if (cam_subrect->width == cam->rect.width &&
- cam_subrect->height == cam->rect.height) {
- /* No sub-cropping */
- mf->width = pix->width;
- mf->height = pix->height;
- return;
- }
-
- /* 1.-2. Current camera scales and subwin - cached. */
-
- dev_geo(dev, "2: subwin %ux%u@%u:%u\n",
- cam_subrect->width, cam_subrect->height,
- cam_subrect->left, cam_subrect->top);
-
- /*
- * 3. Calculate new combined scales from input sub-window to requested
- * user window.
- */
-
- /*
- * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF
- * (128x96) or larger than VGA
- */
- scale_h = calc_generic_scale(cam_subrect->width, pix->width);
- scale_v = calc_generic_scale(cam_subrect->height, pix->height);
-
- dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v);
-
- /*
- * 4. Calculate desired client output window by applying combined scales
- * to client (real) input window.
- */
- mf->width = scale_down(cam->rect.width, scale_h);
- mf->height = scale_down(cam->rect.height, scale_v);
-}
-
/* Similar to set_crop multistage iterative algorithm */
static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
@@ -1726,8 +1364,8 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd,
struct v4l2_mbus_framefmt mf;
__u32 pixfmt = pix->pixelformat;
const struct soc_camera_format_xlate *xlate;
- /* Keep Compiler Happy */
- unsigned int ceu_sub_width = 0, ceu_sub_height = 0;
+ unsigned int ceu_sub_width = pcdev->max_width,
+ ceu_sub_height = pcdev->max_height;
u16 scale_v, scale_h;
int ret;
bool image_mode;
@@ -1754,7 +1392,7 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd,
}
/* 1.-4. Calculate desired client output geometry */
- calculate_client_output(icd, pix, &mf);
+ soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf, 12);
mf.field = pix->field;
mf.colorspace = pix->colorspace;
mf.code = xlate->code;
@@ -1776,8 +1414,9 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd,
dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height);
/* 5. - 9. */
- ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height,
- image_mode && V4L2_FIELD_NONE == field);
+ ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect,
+ &mf, &ceu_sub_width, &ceu_sub_height,
+ image_mode && V4L2_FIELD_NONE == field, 12);
dev_geo(dev, "5-9: client scale return %d\n", ret);
@@ -2026,6 +1665,7 @@ static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q,
q->ops = &sh_mobile_ceu_videobuf_ops;
q->mem_ops = &vb2_dma_contig_memops;
q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer);
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
return vb2_queue_init(q);
}
@@ -2034,6 +1674,8 @@ static struct soc_camera_host_ops sh_mobile_ceu_host_ops = {
.owner = THIS_MODULE,
.add = sh_mobile_ceu_add_device,
.remove = sh_mobile_ceu_remove_device,
+ .clock_start = sh_mobile_ceu_clock_start,
+ .clock_stop = sh_mobile_ceu_clock_stop,
.get_formats = sh_mobile_ceu_get_formats,
.put_formats = sh_mobile_ceu_put_formats,
.get_crop = sh_mobile_ceu_get_crop,
@@ -2077,7 +1719,7 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
struct resource *res;
void __iomem *base;
unsigned int irq;
- int err = 0;
+ int err, i;
struct bus_wait wait = {
.completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion),
.notifier.notifier_call = bus_notify,
@@ -2088,15 +1730,13 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (!res || (int)irq <= 0) {
dev_err(&pdev->dev, "Not enough CEU platform resources.\n");
- err = -ENODEV;
- goto exit;
+ return -ENODEV;
}
- pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL);
+ pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL);
if (!pcdev) {
dev_err(&pdev->dev, "Could not allocate pcdev\n");
- err = -ENOMEM;
- goto exit;
+ return -ENOMEM;
}
INIT_LIST_HEAD(&pcdev->capture);
@@ -2104,21 +1744,40 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
init_completion(&pcdev->complete);
pcdev->pdata = pdev->dev.platform_data;
- if (!pcdev->pdata) {
- err = -EINVAL;
+ if (!pcdev->pdata && !pdev->dev.of_node) {
dev_err(&pdev->dev, "CEU platform data not set.\n");
- goto exit_kfree;
+ return -EINVAL;
+ }
+
+ /* TODO: implement per-device bus flags */
+ if (pcdev->pdata) {
+ pcdev->max_width = pcdev->pdata->max_width;
+ pcdev->max_height = pcdev->pdata->max_height;
+ pcdev->flags = pcdev->pdata->flags;
}
- pcdev->max_width = pcdev->pdata->max_width ? : 2560;
- pcdev->max_height = pcdev->pdata->max_height ? : 1920;
+ if (!pcdev->max_width) {
+ unsigned int v;
+ err = of_property_read_u32(pdev->dev.of_node, "renesas,max-width", &v);
+ if (!err)
+ pcdev->max_width = v;
- base = ioremap_nocache(res->start, resource_size(res));
- if (!base) {
- err = -ENXIO;
- dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n");
- goto exit_kfree;
+ if (!pcdev->max_width)
+ pcdev->max_width = 2560;
}
+ if (!pcdev->max_height) {
+ unsigned int v;
+ err = of_property_read_u32(pdev->dev.of_node, "renesas,max-height", &v);
+ if (!err)
+ pcdev->max_height = v;
+
+ if (!pcdev->max_height)
+ pcdev->max_height = 1920;
+ }
+
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
pcdev->irq = irq;
pcdev->base = base;
@@ -2133,16 +1792,15 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
DMA_MEMORY_EXCLUSIVE);
if (!err) {
dev_err(&pdev->dev, "Unable to declare CEU memory.\n");
- err = -ENXIO;
- goto exit_iounmap;
+ return -ENXIO;
}
pcdev->video_limit = resource_size(res);
}
/* request irq */
- err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED,
- dev_name(&pdev->dev), pcdev);
+ err = devm_request_irq(&pdev->dev, pcdev->irq, sh_mobile_ceu_irq,
+ 0, dev_name(&pdev->dev), pcdev);
if (err) {
dev_err(&pdev->dev, "Unable to register CEU interrupt.\n");
goto exit_release_mem;
@@ -2165,31 +1823,60 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
goto exit_free_clk;
}
- err = soc_camera_host_register(&pcdev->ici);
- if (err)
- goto exit_free_ctx;
+ if (pcdev->pdata && pcdev->pdata->asd_sizes) {
+ struct v4l2_async_subdev **asd;
+ char name[] = "sh-mobile-csi2";
+ int j;
+
+ /*
+ * CSI2 interfacing: several groups can use CSI2, pick up the
+ * first one
+ */
+ asd = pcdev->pdata->asd;
+ for (j = 0; pcdev->pdata->asd_sizes[j]; j++) {
+ for (i = 0; i < pcdev->pdata->asd_sizes[j]; i++, asd++) {
+ dev_dbg(&pdev->dev, "%s(): subdev #%d, type %u\n",
+ __func__, i, (*asd)->match_type);
+ if ((*asd)->match_type == V4L2_ASYNC_MATCH_DEVNAME &&
+ !strncmp(name, (*asd)->match.device_name.name,
+ sizeof(name) - 1)) {
+ pcdev->csi2_asd = *asd;
+ break;
+ }
+ }
+ if (pcdev->csi2_asd)
+ break;
+ }
- /* CSI2 interfacing */
- csi2 = pcdev->pdata->csi2;
+ pcdev->ici.asd = pcdev->pdata->asd;
+ pcdev->ici.asd_sizes = pcdev->pdata->asd_sizes;
+ }
+
+ /* Legacy CSI2 interfacing */
+ csi2 = pcdev->pdata ? pcdev->pdata->csi2 : NULL;
if (csi2) {
+ /*
+ * TODO: remove this once all users are converted to
+ * asynchronous CSI2 probing. If it has to be kept, csi2
+ * platform device resources have to be added, using
+ * platform_device_add_resources()
+ */
struct platform_device *csi2_pdev =
platform_device_alloc("sh-mobile-csi2", csi2->id);
struct sh_csi2_pdata *csi2_pdata = csi2->platform_data;
if (!csi2_pdev) {
err = -ENOMEM;
- goto exit_host_unregister;
+ goto exit_free_ctx;
}
pcdev->csi2_pdev = csi2_pdev;
- err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata));
+ err = platform_device_add_data(csi2_pdev, csi2_pdata,
+ sizeof(*csi2_pdata));
if (err < 0)
goto exit_pdev_put;
- csi2_pdata = csi2_pdev->dev.platform_data;
- csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev;
-
csi2_pdev->resource = csi2->resource;
csi2_pdev->num_resources = csi2->num_resources;
@@ -2231,30 +1918,45 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
err = -ENODEV;
goto exit_pdev_unregister;
}
+
+ pcdev->csi2_sd = platform_get_drvdata(csi2_pdev);
+ }
+
+ err = soc_camera_host_register(&pcdev->ici);
+ if (err)
+ goto exit_csi2_unregister;
+
+ if (csi2) {
+ err = v4l2_device_register_subdev(&pcdev->ici.v4l2_dev,
+ pcdev->csi2_sd);
+ dev_dbg(&pdev->dev, "%s(): ret(register_subdev) = %d\n",
+ __func__, err);
+ if (err < 0)
+ goto exit_host_unregister;
+ /* v4l2_device_register_subdev() took a reference too */
+ module_put(pcdev->csi2_sd->owner);
}
return 0;
-exit_pdev_unregister:
- platform_device_del(pcdev->csi2_pdev);
-exit_pdev_put:
- pcdev->csi2_pdev->resource = NULL;
- platform_device_put(pcdev->csi2_pdev);
exit_host_unregister:
soc_camera_host_unregister(&pcdev->ici);
+exit_csi2_unregister:
+ if (csi2) {
+ module_put(pcdev->csi2_pdev->dev.driver->owner);
+exit_pdev_unregister:
+ platform_device_del(pcdev->csi2_pdev);
+exit_pdev_put:
+ pcdev->csi2_pdev->resource = NULL;
+ platform_device_put(pcdev->csi2_pdev);
+ }
exit_free_ctx:
vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
exit_free_clk:
pm_runtime_disable(&pdev->dev);
- free_irq(pcdev->irq, pcdev);
exit_release_mem:
if (platform_get_resource(pdev, IORESOURCE_MEM, 1))
dma_release_declared_memory(&pdev->dev);
-exit_iounmap:
- iounmap(base);
-exit_kfree:
- kfree(pcdev);
-exit:
return err;
}
@@ -2267,10 +1969,8 @@ static int sh_mobile_ceu_remove(struct platform_device *pdev)
soc_camera_host_unregister(soc_host);
pm_runtime_disable(&pdev->dev);
- free_irq(pcdev->irq, pcdev);
if (platform_get_resource(pdev, IORESOURCE_MEM, 1))
dma_release_declared_memory(&pdev->dev);
- iounmap(pcdev->base);
vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
if (csi2_pdev && csi2_pdev->dev.driver) {
struct module *csi2_drv = csi2_pdev->dev.driver->owner;
@@ -2279,7 +1979,6 @@ static int sh_mobile_ceu_remove(struct platform_device *pdev)
platform_device_put(csi2_pdev);
module_put(csi2_drv);
}
- kfree(pcdev);
return 0;
}
@@ -2301,10 +2000,18 @@ static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = {
.runtime_resume = sh_mobile_ceu_runtime_nop,
};
+static const struct of_device_id sh_mobile_ceu_of_match[] = {
+ { .compatible = "renesas,sh-mobile-ceu" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sh_mobile_ceu_of_match);
+
static struct platform_driver sh_mobile_ceu_driver = {
- .driver = {
+ .driver = {
.name = "sh_mobile_ceu",
+ .owner = THIS_MODULE,
.pm = &sh_mobile_ceu_dev_pm_ops,
+ .of_match_table = sh_mobile_ceu_of_match,
},
.probe = sh_mobile_ceu_probe,
.remove = sh_mobile_ceu_remove,
@@ -2328,5 +2035,5 @@ module_exit(sh_mobile_ceu_exit);
MODULE_DESCRIPTION("SuperH Mobile CEU driver");
MODULE_AUTHOR("Magnus Damm");
MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.6");
+MODULE_VERSION("0.1.0");
MODULE_ALIAS("platform:sh_mobile_ceu");
diff --git a/drivers/media/platform/soc_camera/sh_mobile_csi2.c b/drivers/media/platform/soc_camera/sh_mobile_csi2.c
index a17aba9a010..05dd21a35d6 100644
--- a/drivers/media/platform/soc_camera/sh_mobile_csi2.c
+++ b/drivers/media/platform/soc_camera/sh_mobile_csi2.c
@@ -9,6 +9,7 @@
*/
#include <linux/delay.h>
+#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/io.h>
#include <linux/platform_device.h>
@@ -35,7 +36,6 @@
struct sh_csi2 {
struct v4l2_subdev subdev;
- struct list_head list;
unsigned int irq;
unsigned long mipi_flags;
void __iomem *base;
@@ -43,6 +43,8 @@ struct sh_csi2 {
struct sh_csi2_client_config *client;
};
+static void sh_csi2_hwinit(struct sh_csi2 *priv);
+
static int sh_csi2_try_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
@@ -131,10 +133,58 @@ static int sh_csi2_s_fmt(struct v4l2_subdev *sd,
static int sh_csi2_g_mbus_config(struct v4l2_subdev *sd,
struct v4l2_mbus_config *cfg)
{
- cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING |
- V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
- V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH;
- cfg->type = V4L2_MBUS_PARALLEL;
+ struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev);
+
+ if (!priv->mipi_flags) {
+ struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd);
+ struct v4l2_subdev *client_sd = soc_camera_to_subdev(icd);
+ struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data;
+ unsigned long common_flags, csi2_flags;
+ struct v4l2_mbus_config client_cfg = {.type = V4L2_MBUS_CSI2,};
+ int ret;
+
+ /* Check if we can support this camera */
+ csi2_flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK |
+ V4L2_MBUS_CSI2_1_LANE;
+
+ switch (pdata->type) {
+ case SH_CSI2C:
+ if (priv->client->lanes != 1)
+ csi2_flags |= V4L2_MBUS_CSI2_2_LANE;
+ break;
+ case SH_CSI2I:
+ switch (priv->client->lanes) {
+ default:
+ csi2_flags |= V4L2_MBUS_CSI2_4_LANE;
+ case 3:
+ csi2_flags |= V4L2_MBUS_CSI2_3_LANE;
+ case 2:
+ csi2_flags |= V4L2_MBUS_CSI2_2_LANE;
+ }
+ }
+
+ ret = v4l2_subdev_call(client_sd, video, g_mbus_config, &client_cfg);
+ if (ret == -ENOIOCTLCMD)
+ common_flags = csi2_flags;
+ else if (!ret)
+ common_flags = soc_mbus_config_compatible(&client_cfg,
+ csi2_flags);
+ else
+ common_flags = 0;
+
+ if (!common_flags)
+ return -EINVAL;
+
+ /* All good: camera MIPI configuration supported */
+ priv->mipi_flags = common_flags;
+ }
+
+ if (cfg) {
+ cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING |
+ V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
+ V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH;
+ cfg->type = V4L2_MBUS_PARALLEL;
+ }
return 0;
}
@@ -145,8 +195,17 @@ static int sh_csi2_s_mbus_config(struct v4l2_subdev *sd,
struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev);
struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd);
struct v4l2_subdev *client_sd = soc_camera_to_subdev(icd);
- struct v4l2_mbus_config client_cfg = {.type = V4L2_MBUS_CSI2,
- .flags = priv->mipi_flags};
+ struct v4l2_mbus_config client_cfg = {.type = V4L2_MBUS_CSI2,};
+ int ret = sh_csi2_g_mbus_config(sd, NULL);
+
+ if (ret < 0)
+ return ret;
+
+ pm_runtime_get_sync(&priv->pdev->dev);
+
+ sh_csi2_hwinit(priv);
+
+ client_cfg.flags = priv->mipi_flags;
return v4l2_subdev_call(client_sd, video, s_mbus_config, &client_cfg);
}
@@ -201,19 +260,19 @@ static void sh_csi2_hwinit(struct sh_csi2 *priv)
static int sh_csi2_client_connect(struct sh_csi2 *priv)
{
- struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data;
- struct soc_camera_device *icd = v4l2_get_subdev_hostdata(&priv->subdev);
- struct v4l2_subdev *client_sd = soc_camera_to_subdev(icd);
struct device *dev = v4l2_get_subdevdata(&priv->subdev);
- struct v4l2_mbus_config cfg;
- unsigned long common_flags, csi2_flags;
- int i, ret;
+ struct sh_csi2_pdata *pdata = dev->platform_data;
+ struct soc_camera_device *icd = v4l2_get_subdev_hostdata(&priv->subdev);
+ int i;
if (priv->client)
return -EBUSY;
for (i = 0; i < pdata->num_clients; i++)
- if (&pdata->clients[i].pdev->dev == icd->pdev)
+ if ((pdata->clients[i].pdev &&
+ &pdata->clients[i].pdev->dev == icd->pdev) ||
+ (icd->control &&
+ strcmp(pdata->clients[i].name, dev_name(icd->control))))
break;
dev_dbg(dev, "%s(%p): found #%d\n", __func__, dev, i);
@@ -221,46 +280,8 @@ static int sh_csi2_client_connect(struct sh_csi2 *priv)
if (i == pdata->num_clients)
return -ENODEV;
- /* Check if we can support this camera */
- csi2_flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK | V4L2_MBUS_CSI2_1_LANE;
-
- switch (pdata->type) {
- case SH_CSI2C:
- if (pdata->clients[i].lanes != 1)
- csi2_flags |= V4L2_MBUS_CSI2_2_LANE;
- break;
- case SH_CSI2I:
- switch (pdata->clients[i].lanes) {
- default:
- csi2_flags |= V4L2_MBUS_CSI2_4_LANE;
- case 3:
- csi2_flags |= V4L2_MBUS_CSI2_3_LANE;
- case 2:
- csi2_flags |= V4L2_MBUS_CSI2_2_LANE;
- }
- }
-
- cfg.type = V4L2_MBUS_CSI2;
- ret = v4l2_subdev_call(client_sd, video, g_mbus_config, &cfg);
- if (ret == -ENOIOCTLCMD)
- common_flags = csi2_flags;
- else if (!ret)
- common_flags = soc_mbus_config_compatible(&cfg,
- csi2_flags);
- else
- common_flags = 0;
-
- if (!common_flags)
- return -EINVAL;
-
- /* All good: camera MIPI configuration supported */
- priv->mipi_flags = common_flags;
priv->client = pdata->clients + i;
- pm_runtime_get_sync(dev);
-
- sh_csi2_hwinit(priv);
-
return 0;
}
@@ -303,11 +324,18 @@ static int sh_csi2_probe(struct platform_device *pdev)
/* Platform data specify the PHY, lanes, ECC, CRC */
struct sh_csi2_pdata *pdata = pdev->dev.platform_data;
+ if (!pdata)
+ return -EINVAL;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_csi2), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
/* Interrupt unused so far */
irq = platform_get_irq(pdev, 0);
- if (!res || (int)irq <= 0 || !pdata) {
+ if (!res || (int)irq <= 0) {
dev_err(&pdev->dev, "Not enough CSI2 platform resources.\n");
return -ENODEV;
}
@@ -318,65 +346,42 @@ static int sh_csi2_probe(struct platform_device *pdev)
return -EINVAL;
}
- priv = kzalloc(sizeof(struct sh_csi2), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
priv->irq = irq;
- if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
- dev_err(&pdev->dev, "CSI2 register region already claimed\n");
- ret = -EBUSY;
- goto ereqreg;
- }
-
- priv->base = ioremap(res->start, resource_size(res));
- if (!priv->base) {
- ret = -ENXIO;
- dev_err(&pdev->dev, "Unable to ioremap CSI2 registers.\n");
- goto eremap;
- }
+ priv->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(priv->base))
+ return PTR_ERR(priv->base);
priv->pdev = pdev;
- platform_set_drvdata(pdev, priv);
+ priv->subdev.owner = THIS_MODULE;
+ priv->subdev.dev = &pdev->dev;
+ platform_set_drvdata(pdev, &priv->subdev);
v4l2_subdev_init(&priv->subdev, &sh_csi2_subdev_ops);
v4l2_set_subdevdata(&priv->subdev, &pdev->dev);
snprintf(priv->subdev.name, V4L2_SUBDEV_NAME_SIZE, "%s.mipi-csi",
- dev_name(pdata->v4l2_dev->dev));
- ret = v4l2_device_register_subdev(pdata->v4l2_dev, &priv->subdev);
- dev_dbg(&pdev->dev, "%s(%p): ret(register_subdev) = %d\n", __func__, priv, ret);
+ dev_name(&pdev->dev));
+
+ ret = v4l2_async_register_subdev(&priv->subdev);
if (ret < 0)
- goto esdreg;
+ return ret;
pm_runtime_enable(&pdev->dev);
dev_dbg(&pdev->dev, "CSI2 probed.\n");
return 0;
-
-esdreg:
- iounmap(priv->base);
-eremap:
- release_mem_region(res->start, resource_size(res));
-ereqreg:
- kfree(priv);
-
- return ret;
}
static int sh_csi2_remove(struct platform_device *pdev)
{
- struct sh_csi2 *priv = platform_get_drvdata(pdev);
- struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ struct v4l2_subdev *subdev = platform_get_drvdata(pdev);
+ struct sh_csi2 *priv = container_of(subdev, struct sh_csi2, subdev);
- v4l2_device_unregister_subdev(&priv->subdev);
+ v4l2_async_unregister_subdev(&priv->subdev);
+ v4l2_device_unregister_subdev(subdev);
pm_runtime_disable(&pdev->dev);
- iounmap(priv->base);
- release_mem_region(res->start, resource_size(res));
- platform_set_drvdata(pdev, NULL);
- kfree(priv);
return 0;
}
diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c
index 2ec90eae6ba..7fec8cdaf09 100644
--- a/drivers/media/platform/soc_camera/soc_camera.c
+++ b/drivers/media/platform/soc_camera/soc_camera.c
@@ -21,21 +21,23 @@
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/list.h>
-#include <linux/mutex.h>
#include <linux/module.h>
+#include <linux/mutex.h>
#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
-#include <linux/pm_runtime.h>
#include <linux/vmalloc.h>
#include <media/soc_camera.h>
+#include <media/soc_mediabus.h>
+#include <media/v4l2-async.h>
+#include <media/v4l2-clk.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-dev.h>
#include <media/videobuf-core.h>
#include <media/videobuf2-core.h>
-#include <media/soc_mediabus.h>
/* Default to VGA resolution */
#define DEFAULT_WIDTH 640
@@ -46,40 +48,81 @@
(icd)->vb_vidq.streaming : \
vb2_is_streaming(&(icd)->vb2_vidq))
+#define MAP_MAX_NUM 32
+static DECLARE_BITMAP(device_map, MAP_MAX_NUM);
static LIST_HEAD(hosts);
static LIST_HEAD(devices);
-static DEFINE_MUTEX(list_lock); /* Protects the list of hosts */
+/*
+ * Protects lists and bitmaps of hosts and devices.
+ * Lock nesting: Ok to take ->host_lock under list_lock.
+ */
+static DEFINE_MUTEX(list_lock);
+
+struct soc_camera_async_client {
+ struct v4l2_async_subdev *sensor;
+ struct v4l2_async_notifier notifier;
+ struct platform_device *pdev;
+ struct list_head list; /* needed for clean up */
+};
+
+static int soc_camera_video_start(struct soc_camera_device *icd);
+static int video_dev_create(struct soc_camera_device *icd);
-int soc_camera_power_on(struct device *dev, struct soc_camera_link *icl)
+int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd,
+ struct v4l2_clk *clk)
{
- int ret = regulator_bulk_enable(icl->num_regulators,
- icl->regulators);
+ int ret;
+ bool clock_toggle;
+
+ if (clk && (!ssdd->unbalanced_power ||
+ !test_and_set_bit(0, &ssdd->clock_state))) {
+ ret = v4l2_clk_enable(clk);
+ if (ret < 0) {
+ dev_err(dev, "Cannot enable clock: %d\n", ret);
+ return ret;
+ }
+ clock_toggle = true;
+ } else {
+ clock_toggle = false;
+ }
+
+ ret = regulator_bulk_enable(ssdd->sd_pdata.num_regulators,
+ ssdd->sd_pdata.regulators);
if (ret < 0) {
dev_err(dev, "Cannot enable regulators\n");
- return ret;
+ goto eregenable;
}
- if (icl->power) {
- ret = icl->power(dev, 1);
+ if (ssdd->power) {
+ ret = ssdd->power(dev, 1);
if (ret < 0) {
dev_err(dev,
"Platform failed to power-on the camera.\n");
- regulator_bulk_disable(icl->num_regulators,
- icl->regulators);
+ goto epwron;
}
}
+ return 0;
+
+epwron:
+ regulator_bulk_disable(ssdd->sd_pdata.num_regulators,
+ ssdd->sd_pdata.regulators);
+eregenable:
+ if (clock_toggle)
+ v4l2_clk_disable(clk);
+
return ret;
}
EXPORT_SYMBOL(soc_camera_power_on);
-int soc_camera_power_off(struct device *dev, struct soc_camera_link *icl)
+int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd,
+ struct v4l2_clk *clk)
{
int ret = 0;
int err;
- if (icl->power) {
- err = icl->power(dev, 0);
+ if (ssdd->power) {
+ err = ssdd->power(dev, 0);
if (err < 0) {
dev_err(dev,
"Platform failed to power-off the camera.\n");
@@ -87,17 +130,28 @@ int soc_camera_power_off(struct device *dev, struct soc_camera_link *icl)
}
}
- err = regulator_bulk_disable(icl->num_regulators,
- icl->regulators);
+ err = regulator_bulk_disable(ssdd->sd_pdata.num_regulators,
+ ssdd->sd_pdata.regulators);
if (err < 0) {
dev_err(dev, "Cannot disable regulators\n");
ret = ret ? : err;
}
+ if (clk && (!ssdd->unbalanced_power || test_and_clear_bit(0, &ssdd->clock_state)))
+ v4l2_clk_disable(clk);
+
return ret;
}
EXPORT_SYMBOL(soc_camera_power_off);
+int soc_camera_power_init(struct device *dev, struct soc_camera_subdev_desc *ssdd)
+{
+ /* Should not have any effect in synchronous case */
+ return devm_regulator_bulk_get(dev, ssdd->sd_pdata.num_regulators,
+ ssdd->sd_pdata.regulators);
+}
+EXPORT_SYMBOL(soc_camera_power_init);
+
static int __soc_camera_power_on(struct soc_camera_device *icd)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
@@ -136,29 +190,29 @@ EXPORT_SYMBOL(soc_camera_xlate_by_fourcc);
/**
* soc_camera_apply_board_flags() - apply platform SOCAM_SENSOR_INVERT_* flags
- * @icl: camera platform parameters
+ * @ssdd: camera platform parameters
* @cfg: media bus configuration
* @return: resulting flags
*/
-unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl,
+unsigned long soc_camera_apply_board_flags(struct soc_camera_subdev_desc *ssdd,
const struct v4l2_mbus_config *cfg)
{
unsigned long f, flags = cfg->flags;
/* If only one of the two polarities is supported, switch to the opposite */
- if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) {
+ if (ssdd->flags & SOCAM_SENSOR_INVERT_HSYNC) {
f = flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW);
if (f == V4L2_MBUS_HSYNC_ACTIVE_HIGH || f == V4L2_MBUS_HSYNC_ACTIVE_LOW)
flags ^= V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW;
}
- if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) {
+ if (ssdd->flags & SOCAM_SENSOR_INVERT_VSYNC) {
f = flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW);
if (f == V4L2_MBUS_VSYNC_ACTIVE_HIGH || f == V4L2_MBUS_VSYNC_ACTIVE_LOW)
flags ^= V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW;
}
- if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) {
+ if (ssdd->flags & SOCAM_SENSOR_INVERT_PCLK) {
f = flags & (V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING);
if (f == V4L2_MBUS_PCLK_SAMPLE_RISING || f == V4L2_MBUS_PCLK_SAMPLE_FALLING)
flags ^= V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING;
@@ -235,7 +289,6 @@ static int soc_camera_enum_input(struct file *file, void *priv,
/* default is camera */
inp->type = V4L2_INPUT_TYPE_CAMERA;
- inp->std = V4L2_STD_UNKNOWN;
strcpy(inp->name, "Camera");
return 0;
@@ -256,12 +309,12 @@ static int soc_camera_s_input(struct file *file, void *priv, unsigned int i)
return 0;
}
-static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a)
+static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id a)
{
struct soc_camera_device *icd = file->private_data;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
- return v4l2_subdev_call(sd, core, s_std, *a);
+ return v4l2_subdev_call(sd, video, s_std, a);
}
static int soc_camera_g_std(struct file *file, void *priv, v4l2_std_id *a)
@@ -269,7 +322,7 @@ static int soc_camera_g_std(struct file *file, void *priv, v4l2_std_id *a)
struct soc_camera_device *icd = file->private_data;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
- return v4l2_subdev_call(sd, core, g_std, a);
+ return v4l2_subdev_call(sd, video, g_std, a);
}
static int soc_camera_enum_framesizes(struct file *file, void *fh,
@@ -383,7 +436,7 @@ static int soc_camera_prepare_buf(struct file *file, void *priv,
return vb2_prepare_buf(&icd->vb2_vidq, b);
}
-/* Always entered with .video_lock held */
+/* Always entered with .host_lock held */
static int soc_camera_init_user_formats(struct soc_camera_device *icd)
{
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
@@ -450,7 +503,7 @@ egfmt:
return ret;
}
-/* Always entered with .video_lock held */
+/* Always entered with .host_lock held */
static void soc_camera_free_user_formats(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
@@ -505,32 +558,104 @@ static int soc_camera_set_fmt(struct soc_camera_device *icd,
return ici->ops->set_bus_param(icd);
}
+static int soc_camera_add_device(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ int ret;
+
+ if (ici->icd)
+ return -EBUSY;
+
+ if (!icd->clk) {
+ mutex_lock(&ici->clk_lock);
+ ret = ici->ops->clock_start(ici);
+ mutex_unlock(&ici->clk_lock);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (ici->ops->add) {
+ ret = ici->ops->add(icd);
+ if (ret < 0)
+ goto eadd;
+ }
+
+ ici->icd = icd;
+
+ return 0;
+
+eadd:
+ if (!icd->clk) {
+ mutex_lock(&ici->clk_lock);
+ ici->ops->clock_stop(ici);
+ mutex_unlock(&ici->clk_lock);
+ }
+ return ret;
+}
+
+static void soc_camera_remove_device(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+
+ if (WARN_ON(icd != ici->icd))
+ return;
+
+ if (ici->ops->remove)
+ ici->ops->remove(icd);
+ if (!icd->clk) {
+ mutex_lock(&ici->clk_lock);
+ ici->ops->clock_stop(ici);
+ mutex_unlock(&ici->clk_lock);
+ }
+ ici->icd = NULL;
+}
+
static int soc_camera_open(struct file *file)
{
struct video_device *vdev = video_devdata(file);
- struct soc_camera_device *icd = dev_get_drvdata(vdev->parent);
- struct soc_camera_link *icl = to_soc_camera_link(icd);
+ struct soc_camera_device *icd;
struct soc_camera_host *ici;
int ret;
- if (!to_soc_camera_control(icd))
- /* No device driver attached */
+ /*
+ * Don't mess with the host during probe: wait until the loop in
+ * scan_add_host() completes. Also protect against a race with
+ * soc_camera_host_unregister().
+ */
+ if (mutex_lock_interruptible(&list_lock))
+ return -ERESTARTSYS;
+
+ if (!vdev || !video_is_registered(vdev)) {
+ mutex_unlock(&list_lock);
return -ENODEV;
+ }
+ icd = video_get_drvdata(vdev);
ici = to_soc_camera_host(icd->parent);
- if (mutex_lock_interruptible(&icd->video_lock))
- return -ERESTARTSYS;
- if (!try_module_get(ici->ops->owner)) {
+ ret = try_module_get(ici->ops->owner) ? 0 : -ENODEV;
+ mutex_unlock(&list_lock);
+
+ if (ret < 0) {
dev_err(icd->pdev, "Couldn't lock capture bus driver.\n");
- ret = -EINVAL;
- goto emodule;
+ return ret;
}
+ if (!to_soc_camera_control(icd)) {
+ /* No device driver attached */
+ ret = -ENODEV;
+ goto econtrol;
+ }
+
+ if (mutex_lock_interruptible(&ici->host_lock)) {
+ ret = -ERESTARTSYS;
+ goto elockhost;
+ }
icd->use_count++;
/* Now we really have to activate the camera */
if (icd->use_count == 1) {
+ struct soc_camera_desc *sdesc = to_soc_camera_desc(icd);
/* Restore parameters before the last close() per V4L2 API */
struct v4l2_format f = {
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
@@ -545,13 +670,10 @@ static int soc_camera_open(struct file *file)
};
/* The camera could have been already on, try to reset */
- if (icl->reset)
- icl->reset(icd->pdev);
+ if (sdesc->subdev_desc.reset)
+ sdesc->subdev_desc.reset(icd->pdev);
- /* Don't mess with the host during probe */
- mutex_lock(&ici->host_lock);
- ret = ici->ops->add(icd);
- mutex_unlock(&ici->host_lock);
+ ret = soc_camera_add_device(icd);
if (ret < 0) {
dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret);
goto eiciadd;
@@ -570,7 +692,7 @@ static int soc_camera_open(struct file *file)
* Try to configure with default parameters. Notice: this is the
* very first open, so, we cannot race against other calls,
* apart from someone else calling open() simultaneously, but
- * .video_lock is protecting us against it.
+ * .host_lock is protecting us against it.
*/
ret = soc_camera_set_fmt(icd, &f);
if (ret < 0)
@@ -585,7 +707,7 @@ static int soc_camera_open(struct file *file)
}
v4l2_ctrl_handler_setup(&icd->ctrl_handler);
}
- mutex_unlock(&icd->video_lock);
+ mutex_unlock(&ici->host_lock);
file->private_data = icd;
dev_dbg(icd->pdev, "camera device open\n");
@@ -593,8 +715,8 @@ static int soc_camera_open(struct file *file)
return 0;
/*
- * First four errors are entered with the .video_lock held
- * and use_count == 1
+ * All errors are entered with the .host_lock held, first four also
+ * with use_count == 1
*/
einitvb:
esfmt:
@@ -602,12 +724,13 @@ esfmt:
eresume:
__soc_camera_power_off(icd);
epower:
- ici->ops->remove(icd);
+ soc_camera_remove_device(icd);
eiciadd:
icd->use_count--;
+ mutex_unlock(&ici->host_lock);
+elockhost:
+econtrol:
module_put(ici->ops->owner);
-emodule:
- mutex_unlock(&icd->video_lock);
return ret;
}
@@ -617,7 +740,7 @@ static int soc_camera_close(struct file *file)
struct soc_camera_device *icd = file->private_data;
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
- mutex_lock(&icd->video_lock);
+ mutex_lock(&ici->host_lock);
icd->use_count--;
if (!icd->use_count) {
pm_runtime_suspend(&icd->vdev->dev);
@@ -625,14 +748,14 @@ static int soc_camera_close(struct file *file)
if (ici->ops->init_videobuf2)
vb2_queue_release(&icd->vb2_vidq);
- ici->ops->remove(icd);
-
__soc_camera_power_off(icd);
+
+ soc_camera_remove_device(icd);
}
if (icd->streamer == file)
icd->streamer = NULL;
- mutex_unlock(&icd->video_lock);
+ mutex_unlock(&ici->host_lock);
module_put(ici->ops->owner);
@@ -669,13 +792,13 @@ static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma)
if (icd->streamer != file)
return -EBUSY;
- if (mutex_lock_interruptible(&icd->video_lock))
+ if (mutex_lock_interruptible(&ici->host_lock))
return -ERESTARTSYS;
if (ici->ops->init_videobuf)
err = videobuf_mmap_mapper(&icd->vb_vidq, vma);
else
err = vb2_mmap(&icd->vb2_vidq, vma);
- mutex_unlock(&icd->video_lock);
+ mutex_unlock(&ici->host_lock);
dev_dbg(icd->pdev, "vma start=0x%08lx, size=%ld, ret=%d\n",
(unsigned long)vma->vm_start,
@@ -694,26 +817,28 @@ static unsigned int soc_camera_poll(struct file *file, poll_table *pt)
if (icd->streamer != file)
return POLLERR;
- mutex_lock(&icd->video_lock);
+ mutex_lock(&ici->host_lock);
if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream))
dev_err(icd->pdev, "Trying to poll with no queued buffers!\n");
else
res = ici->ops->poll(file, pt);
- mutex_unlock(&icd->video_lock);
+ mutex_unlock(&ici->host_lock);
return res;
}
void soc_camera_lock(struct vb2_queue *vq)
{
struct soc_camera_device *icd = vb2_get_drv_priv(vq);
- mutex_lock(&icd->video_lock);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ mutex_lock(&ici->host_lock);
}
EXPORT_SYMBOL(soc_camera_lock);
void soc_camera_unlock(struct vb2_queue *vq)
{
struct soc_camera_device *icd = vb2_get_drv_priv(vq);
- mutex_unlock(&icd->video_lock);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ mutex_unlock(&ici->host_lock);
}
EXPORT_SYMBOL(soc_camera_unlock);
@@ -908,6 +1033,8 @@ static int soc_camera_s_crop(struct file *file, void *fh,
dev_dbg(icd->pdev, "S_CROP(%ux%u@%u:%u)\n",
rect->width, rect->height, rect->left, rect->top);
+ current_crop.type = a->type;
+
/* If get_crop fails, we'll let host and / or client drivers decide */
ret = ici->ops->get_crop(icd, &current_crop);
@@ -1014,75 +1141,242 @@ static int soc_camera_s_parm(struct file *file, void *fh,
return -ENOIOCTLCMD;
}
-static int soc_camera_g_chip_ident(struct file *file, void *fh,
- struct v4l2_dbg_chip_ident *id)
+static int soc_camera_probe(struct soc_camera_host *ici,
+ struct soc_camera_device *icd);
+
+/* So far this function cannot fail */
+static void scan_add_host(struct soc_camera_host *ici)
{
- struct soc_camera_device *icd = file->private_data;
- struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct soc_camera_device *icd;
+
+ mutex_lock(&list_lock);
+
+ list_for_each_entry(icd, &devices, list)
+ if (icd->iface == ici->nr) {
+ struct soc_camera_desc *sdesc = to_soc_camera_desc(icd);
+ struct soc_camera_subdev_desc *ssdd = &sdesc->subdev_desc;
+
+ /* The camera could have been already on, try to reset */
+ if (ssdd->reset)
+ ssdd->reset(icd->pdev);
+
+ icd->parent = ici->v4l2_dev.dev;
+
+ /* Ignore errors */
+ soc_camera_probe(ici, icd);
+ }
- return v4l2_subdev_call(sd, core, g_chip_ident, id);
+ mutex_unlock(&list_lock);
}
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int soc_camera_g_register(struct file *file, void *fh,
- struct v4l2_dbg_register *reg)
+/*
+ * It is invalid to call v4l2_clk_enable() after a successful probing
+ * asynchronously outside of V4L2 operations, i.e. with .host_lock not held.
+ */
+static int soc_camera_clk_enable(struct v4l2_clk *clk)
{
- struct soc_camera_device *icd = file->private_data;
- struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct soc_camera_device *icd = clk->priv;
+ struct soc_camera_host *ici;
+ int ret;
+
+ if (!icd || !icd->parent)
+ return -ENODEV;
+
+ ici = to_soc_camera_host(icd->parent);
+
+ if (!try_module_get(ici->ops->owner))
+ return -ENODEV;
- return v4l2_subdev_call(sd, core, g_register, reg);
+ /*
+ * If a different client is currently being probed, the host will tell
+ * you to go
+ */
+ mutex_lock(&ici->clk_lock);
+ ret = ici->ops->clock_start(ici);
+ mutex_unlock(&ici->clk_lock);
+ return ret;
}
-static int soc_camera_s_register(struct file *file, void *fh,
- struct v4l2_dbg_register *reg)
+static void soc_camera_clk_disable(struct v4l2_clk *clk)
{
- struct soc_camera_device *icd = file->private_data;
- struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct soc_camera_device *icd = clk->priv;
+ struct soc_camera_host *ici;
+
+ if (!icd || !icd->parent)
+ return;
+
+ ici = to_soc_camera_host(icd->parent);
+
+ mutex_lock(&ici->clk_lock);
+ ici->ops->clock_stop(ici);
+ mutex_unlock(&ici->clk_lock);
- return v4l2_subdev_call(sd, core, s_register, reg);
+ module_put(ici->ops->owner);
}
-#endif
-static int soc_camera_probe(struct soc_camera_device *icd);
+/*
+ * Eventually, it would be more logical to make the respective host the clock
+ * owner, but then we would have to copy this struct for each ici. Besides, it
+ * would introduce the circular dependency problem, unless we port all client
+ * drivers to release the clock, when not in use.
+ */
+static const struct v4l2_clk_ops soc_camera_clk_ops = {
+ .owner = THIS_MODULE,
+ .enable = soc_camera_clk_enable,
+ .disable = soc_camera_clk_disable,
+};
-/* So far this function cannot fail */
-static void scan_add_host(struct soc_camera_host *ici)
+static int soc_camera_dyn_pdev(struct soc_camera_desc *sdesc,
+ struct soc_camera_async_client *sasc)
{
- struct soc_camera_device *icd;
+ struct platform_device *pdev;
+ int ret, i;
- mutex_lock(&ici->host_lock);
+ mutex_lock(&list_lock);
+ i = find_first_zero_bit(device_map, MAP_MAX_NUM);
+ if (i < MAP_MAX_NUM)
+ set_bit(i, device_map);
+ mutex_unlock(&list_lock);
+ if (i >= MAP_MAX_NUM)
+ return -ENOMEM;
- list_for_each_entry(icd, &devices, list) {
- if (icd->iface == ici->nr) {
- icd->parent = ici->v4l2_dev.dev;
- soc_camera_probe(icd);
- }
+ pdev = platform_device_alloc("soc-camera-pdrv", i);
+ if (!pdev)
+ return -ENOMEM;
+
+ ret = platform_device_add_data(pdev, sdesc, sizeof(*sdesc));
+ if (ret < 0) {
+ platform_device_put(pdev);
+ return ret;
}
- mutex_unlock(&ici->host_lock);
+ sasc->pdev = pdev;
+
+ return 0;
+}
+
+static struct soc_camera_device *soc_camera_add_pdev(struct soc_camera_async_client *sasc)
+{
+ struct platform_device *pdev = sasc->pdev;
+ int ret;
+
+ ret = platform_device_add(pdev);
+ if (ret < 0 || !pdev->dev.driver)
+ return NULL;
+
+ return platform_get_drvdata(pdev);
+}
+
+/* Locking: called with .host_lock held */
+static int soc_camera_probe_finish(struct soc_camera_device *icd)
+{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct v4l2_mbus_framefmt mf;
+ int ret;
+
+ sd->grp_id = soc_camera_grp_id(icd);
+ v4l2_set_subdev_hostdata(sd, icd);
+
+ v4l2_subdev_call(sd, video, g_tvnorms, &icd->vdev->tvnorms);
+
+ ret = v4l2_ctrl_add_handler(&icd->ctrl_handler, sd->ctrl_handler, NULL);
+ if (ret < 0)
+ return ret;
+
+ ret = soc_camera_add_device(icd);
+ if (ret < 0) {
+ dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret);
+ return ret;
+ }
+
+ /* At this point client .probe() should have run already */
+ ret = soc_camera_init_user_formats(icd);
+ if (ret < 0)
+ goto eusrfmt;
+
+ icd->field = V4L2_FIELD_ANY;
+
+ ret = soc_camera_video_start(icd);
+ if (ret < 0)
+ goto evidstart;
+
+ /* Try to improve our guess of a reasonable window format */
+ if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) {
+ icd->user_width = mf.width;
+ icd->user_height = mf.height;
+ icd->colorspace = mf.colorspace;
+ icd->field = mf.field;
+ }
+ soc_camera_remove_device(icd);
+
+ return 0;
+
+evidstart:
+ soc_camera_free_user_formats(icd);
+eusrfmt:
+ soc_camera_remove_device(icd);
+
+ return ret;
}
#ifdef CONFIG_I2C_BOARDINFO
-static int soc_camera_init_i2c(struct soc_camera_device *icd,
- struct soc_camera_link *icl)
+static int soc_camera_i2c_init(struct soc_camera_device *icd,
+ struct soc_camera_desc *sdesc)
{
+ struct soc_camera_subdev_desc *ssdd;
struct i2c_client *client;
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
- struct i2c_adapter *adap = i2c_get_adapter(icl->i2c_adapter_id);
+ struct soc_camera_host *ici;
+ struct soc_camera_host_desc *shd = &sdesc->host_desc;
+ struct i2c_adapter *adap;
struct v4l2_subdev *subdev;
+ char clk_name[V4L2_SUBDEV_NAME_SIZE];
+ int ret;
+
+ /* First find out how we link the main client */
+ if (icd->sasc) {
+ /* Async non-OF probing handled by the subdevice list */
+ return -EPROBE_DEFER;
+ }
+ ici = to_soc_camera_host(icd->parent);
+ adap = i2c_get_adapter(shd->i2c_adapter_id);
if (!adap) {
dev_err(icd->pdev, "Cannot get I2C adapter #%d. No driver?\n",
- icl->i2c_adapter_id);
- goto ei2cga;
+ shd->i2c_adapter_id);
+ return -ENODEV;
}
- icl->board_info->platform_data = icl;
+ ssdd = kzalloc(sizeof(*ssdd), GFP_KERNEL);
+ if (!ssdd) {
+ ret = -ENOMEM;
+ goto ealloc;
+ }
+
+ memcpy(ssdd, &sdesc->subdev_desc, sizeof(*ssdd));
+ /*
+ * In synchronous case we request regulators ourselves in
+ * soc_camera_pdrv_probe(), make sure the subdevice driver doesn't try
+ * to allocate them again.
+ */
+ ssdd->sd_pdata.num_regulators = 0;
+ ssdd->sd_pdata.regulators = NULL;
+ shd->board_info->platform_data = ssdd;
+
+ snprintf(clk_name, sizeof(clk_name), "%d-%04x",
+ shd->i2c_adapter_id, shd->board_info->addr);
+
+ icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd);
+ if (IS_ERR(icd->clk)) {
+ ret = PTR_ERR(icd->clk);
+ goto eclkreg;
+ }
subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap,
- icl->board_info, NULL);
- if (!subdev)
+ shd->board_info, NULL);
+ if (!subdev) {
+ ret = -ENODEV;
goto ei2cnd;
+ }
client = v4l2_get_subdevdata(subdev);
@@ -1091,37 +1385,209 @@ static int soc_camera_init_i2c(struct soc_camera_device *icd,
return 0;
ei2cnd:
+ v4l2_clk_unregister(icd->clk);
+ icd->clk = NULL;
+eclkreg:
+ kfree(ssdd);
+ealloc:
i2c_put_adapter(adap);
-ei2cga:
- return -ENODEV;
+ return ret;
}
-static void soc_camera_free_i2c(struct soc_camera_device *icd)
+static void soc_camera_i2c_free(struct soc_camera_device *icd)
{
struct i2c_client *client =
to_i2c_client(to_soc_camera_control(icd));
- struct i2c_adapter *adap = client->adapter;
+ struct i2c_adapter *adap;
+ struct soc_camera_subdev_desc *ssdd;
icd->control = NULL;
+ if (icd->sasc)
+ return;
+
+ adap = client->adapter;
+ ssdd = client->dev.platform_data;
v4l2_device_unregister_subdev(i2c_get_clientdata(client));
i2c_unregister_device(client);
i2c_put_adapter(adap);
+ kfree(ssdd);
+ v4l2_clk_unregister(icd->clk);
+ icd->clk = NULL;
+}
+
+/*
+ * V4L2 asynchronous notifier callbacks. They are all called under a v4l2-async
+ * internal global mutex, therefore cannot race against other asynchronous
+ * events. Until notifier->complete() (soc_camera_async_complete()) is called,
+ * the video device node is not registered and no V4L fops can occur. Unloading
+ * of the host driver also calls a v4l2-async function, so also there we're
+ * protected.
+ */
+static int soc_camera_async_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *sd,
+ struct v4l2_async_subdev *asd)
+{
+ struct soc_camera_async_client *sasc = container_of(notifier,
+ struct soc_camera_async_client, notifier);
+ struct soc_camera_device *icd = platform_get_drvdata(sasc->pdev);
+
+ if (asd == sasc->sensor && !WARN_ON(icd->control)) {
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ /*
+ * Only now we get subdevice-specific information like
+ * regulators, flags, callbacks, etc.
+ */
+ if (client) {
+ struct soc_camera_desc *sdesc = to_soc_camera_desc(icd);
+ struct soc_camera_subdev_desc *ssdd =
+ soc_camera_i2c_to_desc(client);
+ if (ssdd) {
+ memcpy(&sdesc->subdev_desc, ssdd,
+ sizeof(sdesc->subdev_desc));
+ if (ssdd->reset)
+ ssdd->reset(icd->pdev);
+ }
+
+ icd->control = &client->dev;
+ }
+ }
+
+ return 0;
+}
+
+static void soc_camera_async_unbind(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *sd,
+ struct v4l2_async_subdev *asd)
+{
+ struct soc_camera_async_client *sasc = container_of(notifier,
+ struct soc_camera_async_client, notifier);
+ struct soc_camera_device *icd = platform_get_drvdata(sasc->pdev);
+
+ if (icd->clk) {
+ v4l2_clk_unregister(icd->clk);
+ icd->clk = NULL;
+ }
+}
+
+static int soc_camera_async_complete(struct v4l2_async_notifier *notifier)
+{
+ struct soc_camera_async_client *sasc = container_of(notifier,
+ struct soc_camera_async_client, notifier);
+ struct soc_camera_device *icd = platform_get_drvdata(sasc->pdev);
+
+ if (to_soc_camera_control(icd)) {
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ int ret;
+
+ mutex_lock(&list_lock);
+ ret = soc_camera_probe(ici, icd);
+ mutex_unlock(&list_lock);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int scan_async_group(struct soc_camera_host *ici,
+ struct v4l2_async_subdev **asd, unsigned int size)
+{
+ struct soc_camera_async_subdev *sasd;
+ struct soc_camera_async_client *sasc;
+ struct soc_camera_device *icd;
+ struct soc_camera_desc sdesc = {.host_desc.bus_id = ici->nr,};
+ char clk_name[V4L2_SUBDEV_NAME_SIZE];
+ unsigned int i;
+ int ret;
+
+ /* First look for a sensor */
+ for (i = 0; i < size; i++) {
+ sasd = container_of(asd[i], struct soc_camera_async_subdev, asd);
+ if (sasd->role == SOCAM_SUBDEV_DATA_SOURCE)
+ break;
+ }
+
+ if (i >= size || asd[i]->match_type != V4L2_ASYNC_MATCH_I2C) {
+ /* All useless */
+ dev_err(ici->v4l2_dev.dev, "No I2C data source found!\n");
+ return -ENODEV;
+ }
+
+ /* Or shall this be managed by the soc-camera device? */
+ sasc = devm_kzalloc(ici->v4l2_dev.dev, sizeof(*sasc), GFP_KERNEL);
+ if (!sasc)
+ return -ENOMEM;
+
+ /* HACK: just need a != NULL */
+ sdesc.host_desc.board_info = ERR_PTR(-ENODATA);
+
+ ret = soc_camera_dyn_pdev(&sdesc, sasc);
+ if (ret < 0)
+ return ret;
+
+ sasc->sensor = &sasd->asd;
+
+ icd = soc_camera_add_pdev(sasc);
+ if (!icd) {
+ platform_device_put(sasc->pdev);
+ return -ENOMEM;
+ }
+
+ sasc->notifier.subdevs = asd;
+ sasc->notifier.num_subdevs = size;
+ sasc->notifier.bound = soc_camera_async_bound;
+ sasc->notifier.unbind = soc_camera_async_unbind;
+ sasc->notifier.complete = soc_camera_async_complete;
+
+ icd->sasc = sasc;
+ icd->parent = ici->v4l2_dev.dev;
+
+ snprintf(clk_name, sizeof(clk_name), "%d-%04x",
+ sasd->asd.match.i2c.adapter_id, sasd->asd.match.i2c.address);
+
+ icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd);
+ if (IS_ERR(icd->clk)) {
+ ret = PTR_ERR(icd->clk);
+ goto eclkreg;
+ }
+
+ ret = v4l2_async_notifier_register(&ici->v4l2_dev, &sasc->notifier);
+ if (!ret)
+ return 0;
+
+ v4l2_clk_unregister(icd->clk);
+eclkreg:
+ icd->clk = NULL;
+ platform_device_unregister(sasc->pdev);
+ dev_err(ici->v4l2_dev.dev, "group probe failed: %d\n", ret);
+
+ return ret;
+}
+
+static void scan_async_host(struct soc_camera_host *ici)
+{
+ struct v4l2_async_subdev **asd;
+ int j;
+
+ for (j = 0, asd = ici->asd; ici->asd_sizes[j]; j++) {
+ scan_async_group(ici, asd, ici->asd_sizes[j]);
+ asd += ici->asd_sizes[j];
+ }
}
#else
-#define soc_camera_init_i2c(icd, icl) (-ENODEV)
-#define soc_camera_free_i2c(icd) do {} while (0)
+#define soc_camera_i2c_init(icd, sdesc) (-ENODEV)
+#define soc_camera_i2c_free(icd) do {} while (0)
+#define scan_async_host(ici) do {} while (0)
#endif
-static int soc_camera_video_start(struct soc_camera_device *icd);
-static int video_dev_create(struct soc_camera_device *icd);
/* Called during host-driver probe */
-static int soc_camera_probe(struct soc_camera_device *icd)
+static int soc_camera_probe(struct soc_camera_host *ici,
+ struct soc_camera_device *icd)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
- struct soc_camera_link *icl = to_soc_camera_link(icd);
+ struct soc_camera_desc *sdesc = to_soc_camera_desc(icd);
+ struct soc_camera_host_desc *shd = &sdesc->host_desc;
struct device *control = NULL;
- struct v4l2_subdev *sd;
- struct v4l2_mbus_framefmt mf;
int ret;
dev_info(icd->pdev, "Probing %s\n", dev_name(icd->pdev));
@@ -1137,37 +1603,36 @@ static int soc_camera_probe(struct soc_camera_device *icd)
if (ret < 0)
return ret;
- ret = regulator_bulk_get(icd->pdev, icl->num_regulators,
- icl->regulators);
- if (ret < 0)
- goto ereg;
-
- /* The camera could have been already on, try to reset */
- if (icl->reset)
- icl->reset(icd->pdev);
-
- ret = ici->ops->add(icd);
- if (ret < 0)
- goto eadd;
-
/* Must have icd->vdev before registering the device */
ret = video_dev_create(icd);
if (ret < 0)
goto evdc;
+ /*
+ * ..._video_start() will create a device node, video_register_device()
+ * itself is protected against concurrent open() calls, but we also have
+ * to protect our data also during client probing.
+ */
+
/* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */
- if (icl->board_info) {
- ret = soc_camera_init_i2c(icd, icl);
- if (ret < 0)
- goto eadddev;
- } else if (!icl->add_device || !icl->del_device) {
+ if (shd->board_info) {
+ ret = soc_camera_i2c_init(icd, sdesc);
+ if (ret < 0 && ret != -EPROBE_DEFER)
+ goto eadd;
+ } else if (!shd->add_device || !shd->del_device) {
ret = -EINVAL;
- goto eadddev;
+ goto eadd;
} else {
- if (icl->module_name)
- ret = request_module(icl->module_name);
+ mutex_lock(&ici->clk_lock);
+ ret = ici->ops->clock_start(ici);
+ mutex_unlock(&ici->clk_lock);
+ if (ret < 0)
+ goto eadd;
- ret = icl->add_device(icd);
+ if (shd->module_name)
+ ret = request_module(shd->module_name);
+
+ ret = shd->add_device(icd);
if (ret < 0)
goto eadddev;
@@ -1178,105 +1643,83 @@ static int soc_camera_probe(struct soc_camera_device *icd)
control = to_soc_camera_control(icd);
if (!control || !control->driver || !dev_get_drvdata(control) ||
!try_module_get(control->driver->owner)) {
- icl->del_device(icd);
+ shd->del_device(icd);
ret = -ENODEV;
goto enodrv;
}
}
- sd = soc_camera_to_subdev(icd);
- sd->grp_id = soc_camera_grp_id(icd);
- v4l2_set_subdev_hostdata(sd, icd);
-
- ret = v4l2_ctrl_add_handler(&icd->ctrl_handler, sd->ctrl_handler, NULL);
- if (ret < 0)
- goto ectrl;
-
- /* At this point client .probe() should have run already */
- ret = soc_camera_init_user_formats(icd);
- if (ret < 0)
- goto eiufmt;
-
- icd->field = V4L2_FIELD_ANY;
-
- /*
- * ..._video_start() will create a device node, video_register_device()
- * itself is protected against concurrent open() calls, but we also have
- * to protect our data.
- */
- mutex_lock(&icd->video_lock);
-
- ret = soc_camera_video_start(icd);
+ mutex_lock(&ici->host_lock);
+ ret = soc_camera_probe_finish(icd);
+ mutex_unlock(&ici->host_lock);
if (ret < 0)
- goto evidstart;
-
- /* Try to improve our guess of a reasonable window format */
- if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) {
- icd->user_width = mf.width;
- icd->user_height = mf.height;
- icd->colorspace = mf.colorspace;
- icd->field = mf.field;
- }
-
- ici->ops->remove(icd);
-
- mutex_unlock(&icd->video_lock);
+ goto efinish;
return 0;
-evidstart:
- mutex_unlock(&icd->video_lock);
- soc_camera_free_user_formats(icd);
-eiufmt:
-ectrl:
- if (icl->board_info) {
- soc_camera_free_i2c(icd);
+efinish:
+ if (shd->board_info) {
+ soc_camera_i2c_free(icd);
} else {
- icl->del_device(icd);
+ shd->del_device(icd);
module_put(control->driver->owner);
- }
enodrv:
eadddev:
+ mutex_lock(&ici->clk_lock);
+ ici->ops->clock_stop(ici);
+ mutex_unlock(&ici->clk_lock);
+ }
+eadd:
video_device_release(icd->vdev);
icd->vdev = NULL;
+ if (icd->vdev) {
+ video_device_release(icd->vdev);
+ icd->vdev = NULL;
+ }
evdc:
- ici->ops->remove(icd);
-eadd:
- regulator_bulk_free(icl->num_regulators, icl->regulators);
-ereg:
v4l2_ctrl_handler_free(&icd->ctrl_handler);
return ret;
}
/*
* This is called on device_unregister, which only means we have to disconnect
- * from the host, but not remove ourselves from the device list
+ * from the host, but not remove ourselves from the device list. With
+ * asynchronous client probing this can also be called without
+ * soc_camera_probe_finish() having run. Careful with clean up.
*/
static int soc_camera_remove(struct soc_camera_device *icd)
{
- struct soc_camera_link *icl = to_soc_camera_link(icd);
+ struct soc_camera_desc *sdesc = to_soc_camera_desc(icd);
struct video_device *vdev = icd->vdev;
- BUG_ON(!icd->parent);
-
v4l2_ctrl_handler_free(&icd->ctrl_handler);
if (vdev) {
video_unregister_device(vdev);
icd->vdev = NULL;
}
- if (icl->board_info) {
- soc_camera_free_i2c(icd);
+ if (sdesc->host_desc.board_info) {
+ soc_camera_i2c_free(icd);
} else {
- struct device_driver *drv = to_soc_camera_control(icd)->driver;
+ struct device *dev = to_soc_camera_control(icd);
+ struct device_driver *drv = dev ? dev->driver : NULL;
if (drv) {
- icl->del_device(icd);
+ sdesc->host_desc.del_device(icd);
module_put(drv->owner);
}
}
- soc_camera_free_user_formats(icd);
- regulator_bulk_free(icl->num_regulators, icl->regulators);
+ if (icd->num_user_formats)
+ soc_camera_free_user_formats(icd);
+
+ if (icd->clk) {
+ /* For the synchronous case */
+ v4l2_clk_unregister(icd->clk);
+ icd->clk = NULL;
+ }
+
+ if (icd->sasc)
+ platform_device_unregister(icd->sasc->pdev);
return 0;
}
@@ -1352,8 +1795,8 @@ int soc_camera_host_register(struct soc_camera_host *ici)
((!ici->ops->init_videobuf ||
!ici->ops->reqbufs) &&
!ici->ops->init_videobuf2) ||
- !ici->ops->add ||
- !ici->ops->remove ||
+ !ici->ops->clock_start ||
+ !ici->ops->clock_stop ||
!ici->ops->poll ||
!ici->v4l2_dev.dev)
return -EINVAL;
@@ -1387,7 +1830,18 @@ int soc_camera_host_register(struct soc_camera_host *ici)
mutex_unlock(&list_lock);
mutex_init(&ici->host_lock);
- scan_add_host(ici);
+ mutex_init(&ici->clk_lock);
+
+ if (ici->asd_sizes)
+ /*
+ * No OF, host with a list of subdevices. Don't try to mix
+ * modes by initialising some groups statically and some
+ * dynamically!
+ */
+ scan_async_host(ici);
+ else
+ /* Legacy: static platform devices from board data */
+ scan_add_host(ici);
return 0;
@@ -1400,13 +1854,30 @@ EXPORT_SYMBOL(soc_camera_host_register);
/* Unregister all clients! */
void soc_camera_host_unregister(struct soc_camera_host *ici)
{
- struct soc_camera_device *icd;
+ struct soc_camera_device *icd, *tmp;
+ struct soc_camera_async_client *sasc;
+ LIST_HEAD(notifiers);
mutex_lock(&list_lock);
-
list_del(&ici->list);
list_for_each_entry(icd, &devices, list)
- if (icd->iface == ici->nr && to_soc_camera_control(icd))
+ if (icd->iface == ici->nr && icd->sasc) {
+ /* as long as we hold the device, sasc won't be freed */
+ get_device(icd->pdev);
+ list_add(&icd->sasc->list, &notifiers);
+ }
+ mutex_unlock(&list_lock);
+
+ list_for_each_entry(sasc, &notifiers, list) {
+ /* Must call unlocked to avoid AB-BA dead-lock */
+ v4l2_async_notifier_unregister(&sasc->notifier);
+ put_device(&sasc->pdev->dev);
+ }
+
+ mutex_lock(&list_lock);
+
+ list_for_each_entry_safe(icd, tmp, &devices, list)
+ if (icd->iface == ici->nr)
soc_camera_remove(icd);
mutex_unlock(&list_lock);
@@ -1421,6 +1892,7 @@ static int soc_camera_device_register(struct soc_camera_device *icd)
struct soc_camera_device *ix;
int num = -1, i;
+ mutex_lock(&list_lock);
for (i = 0; i < 256 && num < 0; i++) {
num = i;
/* Check if this index is available on this interface */
@@ -1432,19 +1904,34 @@ static int soc_camera_device_register(struct soc_camera_device *icd)
}
}
- if (num < 0)
+ if (num < 0) {
/*
* ok, we have 256 cameras on this host...
* man, stay reasonable...
*/
+ mutex_unlock(&list_lock);
return -ENOMEM;
+ }
icd->devnum = num;
icd->use_count = 0;
icd->host_priv = NULL;
- mutex_init(&icd->video_lock);
+ /*
+ * Dynamically allocated devices set the bit earlier, but it doesn't hurt setting
+ * it again
+ */
+ i = to_platform_device(icd->pdev)->id;
+ if (i < 0)
+ /* One static (legacy) soc-camera platform device */
+ i = 0;
+ if (i >= MAP_MAX_NUM) {
+ mutex_unlock(&list_lock);
+ return -EBUSY;
+ }
+ set_bit(i, device_map);
list_add_tail(&icd->list, &devices);
+ mutex_unlock(&list_lock);
return 0;
}
@@ -1476,11 +1963,6 @@ static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = {
.vidioc_s_selection = soc_camera_s_selection,
.vidioc_g_parm = soc_camera_g_parm,
.vidioc_s_parm = soc_camera_s_parm,
- .vidioc_g_chip_ident = soc_camera_g_chip_ident,
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .vidioc_g_register = soc_camera_g_register,
- .vidioc_s_register = soc_camera_s_register,
-#endif
};
static int video_dev_create(struct soc_camera_device *icd)
@@ -1493,14 +1975,12 @@ static int video_dev_create(struct soc_camera_device *icd)
strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name));
- vdev->parent = icd->pdev;
- vdev->current_norm = V4L2_STD_UNKNOWN;
+ vdev->v4l2_dev = &ici->v4l2_dev;
vdev->fops = &soc_camera_fops;
vdev->ioctl_ops = &soc_camera_ioctl_ops;
vdev->release = video_device_release;
- vdev->tvnorms = V4L2_STD_UNKNOWN;
vdev->ctrl_handler = &icd->ctrl_handler;
- vdev->lock = &icd->video_lock;
+ vdev->lock = &ici->host_lock;
icd->vdev = vdev;
@@ -1508,7 +1988,7 @@ static int video_dev_create(struct soc_camera_device *icd)
}
/*
- * Called from soc_camera_probe() above (with .video_lock held???)
+ * Called from soc_camera_probe() above with .host_lock held
*/
static int soc_camera_video_start(struct soc_camera_device *icd)
{
@@ -1518,6 +1998,13 @@ static int soc_camera_video_start(struct soc_camera_device *icd)
if (!icd->parent)
return -ENODEV;
+ video_set_drvdata(icd->vdev, icd);
+ if (icd->vdev->tvnorms == 0) {
+ /* disable the STD API if there are no tvnorms defined */
+ v4l2_disable_ioctl(icd->vdev, VIDIOC_G_STD);
+ v4l2_disable_ioctl(icd->vdev, VIDIOC_S_STD);
+ v4l2_disable_ioctl(icd->vdev, VIDIOC_ENUMSTD);
+ }
ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1);
if (ret < 0) {
dev_err(icd->pdev, "video_register_device failed: %d\n", ret);
@@ -1532,18 +2019,32 @@ static int soc_camera_video_start(struct soc_camera_device *icd)
static int soc_camera_pdrv_probe(struct platform_device *pdev)
{
- struct soc_camera_link *icl = pdev->dev.platform_data;
+ struct soc_camera_desc *sdesc = pdev->dev.platform_data;
+ struct soc_camera_subdev_desc *ssdd = &sdesc->subdev_desc;
struct soc_camera_device *icd;
+ int ret;
- if (!icl)
+ if (!sdesc)
return -EINVAL;
icd = devm_kzalloc(&pdev->dev, sizeof(*icd), GFP_KERNEL);
if (!icd)
return -ENOMEM;
- icd->iface = icl->bus_id;
- icd->link = icl;
+ /*
+ * In the asynchronous case ssdd->num_regulators == 0 yet, so, the below
+ * regulator allocation is a dummy. They are actually requested by the
+ * subdevice driver, using soc_camera_power_init(). Also note, that in
+ * that case regulators are attached to the I2C device and not to the
+ * camera platform device.
+ */
+ ret = devm_regulator_bulk_get(&pdev->dev, ssdd->sd_pdata.num_regulators,
+ ssdd->sd_pdata.regulators);
+ if (ret < 0)
+ return ret;
+
+ icd->iface = sdesc->host_desc.bus_id;
+ icd->sdesc = sdesc;
icd->pdev = &pdev->dev;
platform_set_drvdata(pdev, icd);
@@ -1561,11 +2062,25 @@ static int soc_camera_pdrv_probe(struct platform_device *pdev)
static int soc_camera_pdrv_remove(struct platform_device *pdev)
{
struct soc_camera_device *icd = platform_get_drvdata(pdev);
+ int i;
if (!icd)
return -EINVAL;
- list_del(&icd->list);
+ i = pdev->id;
+ if (i < 0)
+ i = 0;
+
+ /*
+ * In synchronous mode with static platform devices this is called in a
+ * loop from drivers/base/dd.c::driver_detach(), no parallel execution,
+ * no need to lock. In asynchronous case the caller -
+ * soc_camera_host_unregister() - already holds the lock
+ */
+ if (test_bit(i, device_map)) {
+ clear_bit(i, device_map);
+ list_del(&icd->list);
+ }
return 0;
}
diff --git a/drivers/media/platform/soc_camera/soc_camera_platform.c b/drivers/media/platform/soc_camera/soc_camera_platform.c
index 7cf7fd16481..ceaddfb85e4 100644
--- a/drivers/media/platform/soc_camera/soc_camera_platform.c
+++ b/drivers/media/platform/soc_camera/soc_camera_platform.c
@@ -54,7 +54,7 @@ static int soc_camera_platform_s_power(struct v4l2_subdev *sd, int on)
{
struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
- return soc_camera_set_power(p->icd->control, p->icd->link, on);
+ return soc_camera_set_power(p->icd->control, &p->icd->sdesc->subdev_desc, NULL, on);
}
static struct v4l2_subdev_core_ops platform_subdev_core_ops = {
@@ -137,7 +137,6 @@ static int soc_camera_platform_probe(struct platform_device *pdev)
struct soc_camera_platform_priv *priv;
struct soc_camera_platform_info *p = pdev->dev.platform_data;
struct soc_camera_device *icd;
- int ret;
if (!p)
return -EINVAL;
@@ -148,7 +147,7 @@ static int soc_camera_platform_probe(struct platform_device *pdev)
return -EINVAL;
}
- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
@@ -165,16 +164,7 @@ static int soc_camera_platform_probe(struct platform_device *pdev)
v4l2_set_subdevdata(&priv->subdev, p);
strncpy(priv->subdev.name, dev_name(&pdev->dev), V4L2_SUBDEV_NAME_SIZE);
- ret = v4l2_device_register_subdev(&ici->v4l2_dev, &priv->subdev);
- if (ret)
- goto evdrs;
-
- return ret;
-
-evdrs:
- platform_set_drvdata(pdev, NULL);
- kfree(priv);
- return ret;
+ return v4l2_device_register_subdev(&ici->v4l2_dev, &priv->subdev);
}
static int soc_camera_platform_remove(struct platform_device *pdev)
@@ -184,13 +174,11 @@ static int soc_camera_platform_remove(struct platform_device *pdev)
p->icd->control = NULL;
v4l2_device_unregister_subdev(&priv->subdev);
- platform_set_drvdata(pdev, NULL);
- kfree(priv);
return 0;
}
static struct platform_driver soc_camera_platform_driver = {
- .driver = {
+ .driver = {
.name = "soc_camera_platform",
.owner = THIS_MODULE,
},
diff --git a/drivers/media/platform/soc_camera/soc_mediabus.c b/drivers/media/platform/soc_camera/soc_mediabus.c
index a397812635d..dc02deca756 100644
--- a/drivers/media/platform/soc_camera/soc_mediabus.c
+++ b/drivers/media/platform/soc_camera/soc_mediabus.c
@@ -73,7 +73,7 @@ static const struct soc_mbus_lookup mbus_fmt[] = {
.name = "RGB555X",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
- .order = SOC_MBUS_ORDER_LE,
+ .order = SOC_MBUS_ORDER_BE,
.layout = SOC_MBUS_LAYOUT_PACKED,
},
}, {
@@ -93,10 +93,46 @@ static const struct soc_mbus_lookup mbus_fmt[] = {
.name = "RGB565X",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
- .order = SOC_MBUS_ORDER_LE,
+ .order = SOC_MBUS_ORDER_BE,
.layout = SOC_MBUS_LAYOUT_PACKED,
},
}, {
+ .code = V4L2_MBUS_FMT_RGB666_1X18,
+ .fmt = {
+ .fourcc = V4L2_PIX_FMT_RGB32,
+ .name = "RGB666/32bpp",
+ .bits_per_sample = 18,
+ .packing = SOC_MBUS_PACKING_EXTEND32,
+ .order = SOC_MBUS_ORDER_LE,
+ },
+}, {
+ .code = V4L2_MBUS_FMT_RGB888_1X24,
+ .fmt = {
+ .fourcc = V4L2_PIX_FMT_RGB32,
+ .name = "RGB888/32bpp",
+ .bits_per_sample = 24,
+ .packing = SOC_MBUS_PACKING_EXTEND32,
+ .order = SOC_MBUS_ORDER_LE,
+ },
+}, {
+ .code = V4L2_MBUS_FMT_RGB888_2X12_BE,
+ .fmt = {
+ .fourcc = V4L2_PIX_FMT_RGB32,
+ .name = "RGB888/32bpp",
+ .bits_per_sample = 12,
+ .packing = SOC_MBUS_PACKING_EXTEND32,
+ .order = SOC_MBUS_ORDER_BE,
+ },
+}, {
+ .code = V4L2_MBUS_FMT_RGB888_2X12_LE,
+ .fmt = {
+ .fourcc = V4L2_PIX_FMT_RGB32,
+ .name = "RGB888/32bpp",
+ .bits_per_sample = 12,
+ .packing = SOC_MBUS_PACKING_EXTEND32,
+ .order = SOC_MBUS_ORDER_LE,
+ },
+}, {
.code = V4L2_MBUS_FMT_SBGGR8_1X8,
.fmt = {
.fourcc = V4L2_PIX_FMT_SBGGR8,
@@ -358,6 +394,10 @@ int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf,
*numerator = 1;
*denominator = 1;
return 0;
+ case SOC_MBUS_PACKING_EXTEND32:
+ *numerator = 1;
+ *denominator = 1;
+ return 0;
case SOC_MBUS_PACKING_2X8_PADHI:
case SOC_MBUS_PACKING_2X8_PADLO:
*numerator = 2;
@@ -378,9 +418,6 @@ EXPORT_SYMBOL(soc_mbus_samples_per_pixel);
s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf)
{
- if (mf->fourcc == V4L2_PIX_FMT_JPEG)
- return 0;
-
if (mf->layout != SOC_MBUS_LAYOUT_PACKED)
return width * mf->bits_per_sample / 8;
@@ -395,6 +432,8 @@ s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf)
return width * 3 / 2;
case SOC_MBUS_PACKING_VARIABLE:
return 0;
+ case SOC_MBUS_PACKING_EXTEND32:
+ return width * 4;
}
return -EINVAL;
}
@@ -403,9 +442,6 @@ EXPORT_SYMBOL(soc_mbus_bytes_per_line);
s32 soc_mbus_image_size(const struct soc_mbus_pixelfmt *mf,
u32 bytes_per_line, u32 height)
{
- if (mf->fourcc == V4L2_PIX_FMT_JPEG)
- return 0;
-
if (mf->layout == SOC_MBUS_LAYOUT_PACKED)
return bytes_per_line * height;
diff --git a/drivers/media/platform/soc_camera/soc_scale_crop.c b/drivers/media/platform/soc_camera/soc_scale_crop.c
new file mode 100644
index 00000000000..8e74fb7f2a0
--- /dev/null
+++ b/drivers/media/platform/soc_camera/soc_scale_crop.c
@@ -0,0 +1,402 @@
+/*
+ * soc-camera generic scaling-cropping manipulation functions
+ *
+ * Copyright (C) 2013 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+
+#include <media/soc_camera.h>
+#include <media/v4l2-common.h>
+
+#include "soc_scale_crop.h"
+
+#ifdef DEBUG_GEOMETRY
+#define dev_geo dev_info
+#else
+#define dev_geo dev_dbg
+#endif
+
+/* Check if any dimension of r1 is smaller than respective one of r2 */
+static bool is_smaller(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
+{
+ return r1->width < r2->width || r1->height < r2->height;
+}
+
+/* Check if r1 fails to cover r2 */
+static bool is_inside(const struct v4l2_rect *r1, const struct v4l2_rect *r2)
+{
+ return r1->left > r2->left || r1->top > r2->top ||
+ r1->left + r1->width < r2->left + r2->width ||
+ r1->top + r1->height < r2->top + r2->height;
+}
+
+/* Get and store current client crop */
+int soc_camera_client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect)
+{
+ struct v4l2_crop crop;
+ struct v4l2_cropcap cap;
+ int ret;
+
+ crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ ret = v4l2_subdev_call(sd, video, g_crop, &crop);
+ if (!ret) {
+ *rect = crop.c;
+ return ret;
+ }
+
+ /* Camera driver doesn't support .g_crop(), assume default rectangle */
+ cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ ret = v4l2_subdev_call(sd, video, cropcap, &cap);
+ if (!ret)
+ *rect = cap.defrect;
+
+ return ret;
+}
+EXPORT_SYMBOL(soc_camera_client_g_rect);
+
+/* Client crop has changed, update our sub-rectangle to remain within the area */
+static void update_subrect(struct v4l2_rect *rect, struct v4l2_rect *subrect)
+{
+ if (rect->width < subrect->width)
+ subrect->width = rect->width;
+
+ if (rect->height < subrect->height)
+ subrect->height = rect->height;
+
+ if (rect->left > subrect->left)
+ subrect->left = rect->left;
+ else if (rect->left + rect->width >
+ subrect->left + subrect->width)
+ subrect->left = rect->left + rect->width -
+ subrect->width;
+
+ if (rect->top > subrect->top)
+ subrect->top = rect->top;
+ else if (rect->top + rect->height >
+ subrect->top + subrect->height)
+ subrect->top = rect->top + rect->height -
+ subrect->height;
+}
+
+/*
+ * The common for both scaling and cropping iterative approach is:
+ * 1. try if the client can produce exactly what requested by the user
+ * 2. if (1) failed, try to double the client image until we get one big enough
+ * 3. if (2) failed, try to request the maximum image
+ */
+int soc_camera_client_s_crop(struct v4l2_subdev *sd,
+ struct v4l2_crop *crop, struct v4l2_crop *cam_crop,
+ struct v4l2_rect *target_rect, struct v4l2_rect *subrect)
+{
+ struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c;
+ struct device *dev = sd->v4l2_dev->dev;
+ struct v4l2_cropcap cap;
+ int ret;
+ unsigned int width, height;
+
+ v4l2_subdev_call(sd, video, s_crop, crop);
+ ret = soc_camera_client_g_rect(sd, cam_rect);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Now cam_crop contains the current camera input rectangle, and it must
+ * be within camera cropcap bounds
+ */
+ if (!memcmp(rect, cam_rect, sizeof(*rect))) {
+ /* Even if camera S_CROP failed, but camera rectangle matches */
+ dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n",
+ rect->width, rect->height, rect->left, rect->top);
+ *target_rect = *cam_rect;
+ return 0;
+ }
+
+ /* Try to fix cropping, that camera hasn't managed to set */
+ dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n",
+ cam_rect->width, cam_rect->height,
+ cam_rect->left, cam_rect->top,
+ rect->width, rect->height, rect->left, rect->top);
+
+ /* We need sensor maximum rectangle */
+ ret = v4l2_subdev_call(sd, video, cropcap, &cap);
+ if (ret < 0)
+ return ret;
+
+ /* Put user requested rectangle within sensor bounds */
+ soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2,
+ cap.bounds.width);
+ soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4,
+ cap.bounds.height);
+
+ /*
+ * Popular special case - some cameras can only handle fixed sizes like
+ * QVGA, VGA,... Take care to avoid infinite loop.
+ */
+ width = max_t(unsigned int, cam_rect->width, 2);
+ height = max_t(unsigned int, cam_rect->height, 2);
+
+ /*
+ * Loop as long as sensor is not covering the requested rectangle and
+ * is still within its bounds
+ */
+ while (!ret && (is_smaller(cam_rect, rect) ||
+ is_inside(cam_rect, rect)) &&
+ (cap.bounds.width > width || cap.bounds.height > height)) {
+
+ width *= 2;
+ height *= 2;
+
+ cam_rect->width = width;
+ cam_rect->height = height;
+
+ /*
+ * We do not know what capabilities the camera has to set up
+ * left and top borders. We could try to be smarter in iterating
+ * them, e.g., if camera current left is to the right of the
+ * target left, set it to the middle point between the current
+ * left and minimum left. But that would add too much
+ * complexity: we would have to iterate each border separately.
+ * Instead we just drop to the left and top bounds.
+ */
+ if (cam_rect->left > rect->left)
+ cam_rect->left = cap.bounds.left;
+
+ if (cam_rect->left + cam_rect->width < rect->left + rect->width)
+ cam_rect->width = rect->left + rect->width -
+ cam_rect->left;
+
+ if (cam_rect->top > rect->top)
+ cam_rect->top = cap.bounds.top;
+
+ if (cam_rect->top + cam_rect->height < rect->top + rect->height)
+ cam_rect->height = rect->top + rect->height -
+ cam_rect->top;
+
+ v4l2_subdev_call(sd, video, s_crop, cam_crop);
+ ret = soc_camera_client_g_rect(sd, cam_rect);
+ dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret,
+ cam_rect->width, cam_rect->height,
+ cam_rect->left, cam_rect->top);
+ }
+
+ /* S_CROP must not modify the rectangle */
+ if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) {
+ /*
+ * The camera failed to configure a suitable cropping,
+ * we cannot use the current rectangle, set to max
+ */
+ *cam_rect = cap.bounds;
+ v4l2_subdev_call(sd, video, s_crop, cam_crop);
+ ret = soc_camera_client_g_rect(sd, cam_rect);
+ dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret,
+ cam_rect->width, cam_rect->height,
+ cam_rect->left, cam_rect->top);
+ }
+
+ if (!ret) {
+ *target_rect = *cam_rect;
+ update_subrect(target_rect, subrect);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(soc_camera_client_s_crop);
+
+/* Iterative s_mbus_fmt, also updates cached client crop on success */
+static int client_s_fmt(struct soc_camera_device *icd,
+ struct v4l2_rect *rect, struct v4l2_rect *subrect,
+ unsigned int max_width, unsigned int max_height,
+ struct v4l2_mbus_framefmt *mf, bool host_can_scale)
+{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct device *dev = icd->parent;
+ unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h;
+ struct v4l2_cropcap cap;
+ bool host_1to1;
+ int ret;
+
+ ret = v4l2_device_call_until_err(sd->v4l2_dev,
+ soc_camera_grp_id(icd), video,
+ s_mbus_fmt, mf);
+ if (ret < 0)
+ return ret;
+
+ dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height);
+
+ if (width == mf->width && height == mf->height) {
+ /* Perfect! The client has done it all. */
+ host_1to1 = true;
+ goto update_cache;
+ }
+
+ host_1to1 = false;
+ if (!host_can_scale)
+ goto update_cache;
+
+ cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ ret = v4l2_subdev_call(sd, video, cropcap, &cap);
+ if (ret < 0)
+ return ret;
+
+ if (max_width > cap.bounds.width)
+ max_width = cap.bounds.width;
+ if (max_height > cap.bounds.height)
+ max_height = cap.bounds.height;
+
+ /* Camera set a format, but geometry is not precise, try to improve */
+ tmp_w = mf->width;
+ tmp_h = mf->height;
+
+ /* width <= max_width && height <= max_height - guaranteed by try_fmt */
+ while ((width > tmp_w || height > tmp_h) &&
+ tmp_w < max_width && tmp_h < max_height) {
+ tmp_w = min(2 * tmp_w, max_width);
+ tmp_h = min(2 * tmp_h, max_height);
+ mf->width = tmp_w;
+ mf->height = tmp_h;
+ ret = v4l2_device_call_until_err(sd->v4l2_dev,
+ soc_camera_grp_id(icd), video,
+ s_mbus_fmt, mf);
+ dev_geo(dev, "Camera scaled to %ux%u\n",
+ mf->width, mf->height);
+ if (ret < 0) {
+ /* This shouldn't happen */
+ dev_err(dev, "Client failed to set format: %d\n", ret);
+ return ret;
+ }
+ }
+
+update_cache:
+ /* Update cache */
+ ret = soc_camera_client_g_rect(sd, rect);
+ if (ret < 0)
+ return ret;
+
+ if (host_1to1)
+ *subrect = *rect;
+ else
+ update_subrect(rect, subrect);
+
+ return 0;
+}
+
+/**
+ * @icd - soc-camera device
+ * @rect - camera cropping window
+ * @subrect - part of rect, sent to the user
+ * @mf - in- / output camera output window
+ * @width - on input: max host input width
+ * on output: user width, mapped back to input
+ * @height - on input: max host input height
+ * on output: user height, mapped back to input
+ * @host_can_scale - host can scale this pixel format
+ * @shift - shift, used for scaling
+ */
+int soc_camera_client_scale(struct soc_camera_device *icd,
+ struct v4l2_rect *rect, struct v4l2_rect *subrect,
+ struct v4l2_mbus_framefmt *mf,
+ unsigned int *width, unsigned int *height,
+ bool host_can_scale, unsigned int shift)
+{
+ struct device *dev = icd->parent;
+ struct v4l2_mbus_framefmt mf_tmp = *mf;
+ unsigned int scale_h, scale_v;
+ int ret;
+
+ /*
+ * 5. Apply iterative camera S_FMT for camera user window (also updates
+ * client crop cache and the imaginary sub-rectangle).
+ */
+ ret = client_s_fmt(icd, rect, subrect, *width, *height,
+ &mf_tmp, host_can_scale);
+ if (ret < 0)
+ return ret;
+
+ dev_geo(dev, "5: camera scaled to %ux%u\n",
+ mf_tmp.width, mf_tmp.height);
+
+ /* 6. Retrieve camera output window (g_fmt) */
+
+ /* unneeded - it is already in "mf_tmp" */
+
+ /* 7. Calculate new client scales. */
+ scale_h = soc_camera_calc_scale(rect->width, shift, mf_tmp.width);
+ scale_v = soc_camera_calc_scale(rect->height, shift, mf_tmp.height);
+
+ mf->width = mf_tmp.width;
+ mf->height = mf_tmp.height;
+ mf->colorspace = mf_tmp.colorspace;
+
+ /*
+ * 8. Calculate new host crop - apply camera scales to previously
+ * updated "effective" crop.
+ */
+ *width = soc_camera_shift_scale(subrect->width, shift, scale_h);
+ *height = soc_camera_shift_scale(subrect->height, shift, scale_v);
+
+ dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height);
+
+ return 0;
+}
+EXPORT_SYMBOL(soc_camera_client_scale);
+
+/*
+ * Calculate real client output window by applying new scales to the current
+ * client crop. New scales are calculated from the requested output format and
+ * host crop, mapped backed onto the client input (subrect).
+ */
+void soc_camera_calc_client_output(struct soc_camera_device *icd,
+ struct v4l2_rect *rect, struct v4l2_rect *subrect,
+ const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf,
+ unsigned int shift)
+{
+ struct device *dev = icd->parent;
+ unsigned int scale_v, scale_h;
+
+ if (subrect->width == rect->width &&
+ subrect->height == rect->height) {
+ /* No sub-cropping */
+ mf->width = pix->width;
+ mf->height = pix->height;
+ return;
+ }
+
+ /* 1.-2. Current camera scales and subwin - cached. */
+
+ dev_geo(dev, "2: subwin %ux%u@%u:%u\n",
+ subrect->width, subrect->height,
+ subrect->left, subrect->top);
+
+ /*
+ * 3. Calculate new combined scales from input sub-window to requested
+ * user window.
+ */
+
+ /*
+ * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF
+ * (128x96) or larger than VGA. This and similar limitations have to be
+ * taken into account here.
+ */
+ scale_h = soc_camera_calc_scale(subrect->width, shift, pix->width);
+ scale_v = soc_camera_calc_scale(subrect->height, shift, pix->height);
+
+ dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v);
+
+ /*
+ * 4. Calculate desired client output window by applying combined scales
+ * to client (real) input window.
+ */
+ mf->width = soc_camera_shift_scale(rect->width, shift, scale_h);
+ mf->height = soc_camera_shift_scale(rect->height, shift, scale_v);
+}
+EXPORT_SYMBOL(soc_camera_calc_client_output);
diff --git a/drivers/media/platform/soc_camera/soc_scale_crop.h b/drivers/media/platform/soc_camera/soc_scale_crop.h
new file mode 100644
index 00000000000..184a30dff54
--- /dev/null
+++ b/drivers/media/platform/soc_camera/soc_scale_crop.h
@@ -0,0 +1,47 @@
+/*
+ * soc-camera generic scaling-cropping manipulation functions
+ *
+ * Copyright (C) 2013 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef SOC_SCALE_CROP_H
+#define SOC_SCALE_CROP_H
+
+#include <linux/kernel.h>
+
+struct soc_camera_device;
+
+struct v4l2_crop;
+struct v4l2_mbus_framefmt;
+struct v4l2_pix_format;
+struct v4l2_rect;
+struct v4l2_subdev;
+
+static inline unsigned int soc_camera_shift_scale(unsigned int size,
+ unsigned int shift, unsigned int scale)
+{
+ return DIV_ROUND_CLOSEST(size << shift, scale);
+}
+
+#define soc_camera_calc_scale(in, shift, out) soc_camera_shift_scale(in, shift, out)
+
+int soc_camera_client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect);
+int soc_camera_client_s_crop(struct v4l2_subdev *sd,
+ struct v4l2_crop *crop, struct v4l2_crop *cam_crop,
+ struct v4l2_rect *target_rect, struct v4l2_rect *subrect);
+int soc_camera_client_scale(struct soc_camera_device *icd,
+ struct v4l2_rect *rect, struct v4l2_rect *subrect,
+ struct v4l2_mbus_framefmt *mf,
+ unsigned int *width, unsigned int *height,
+ bool host_can_scale, unsigned int shift);
+void soc_camera_calc_client_output(struct soc_camera_device *icd,
+ struct v4l2_rect *rect, struct v4l2_rect *subrect,
+ const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf,
+ unsigned int shift);
+
+#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 11:03:11 +0000