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path: root/drivers/media/video/davinci/vpbe_venc.c
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Diffstat (limited to 'drivers/media/video/davinci/vpbe_venc.c')
-rw-r--r--drivers/media/video/davinci/vpbe_venc.c566
1 files changed, 566 insertions, 0 deletions
diff --git a/drivers/media/video/davinci/vpbe_venc.c b/drivers/media/video/davinci/vpbe_venc.c
new file mode 100644
index 00000000000..03a3e5c65ee
--- /dev/null
+++ b/drivers/media/video/davinci/vpbe_venc.c
@@ -0,0 +1,566 @@
+/*
+ * Copyright (C) 2010 Texas Instruments Inc
+ *
+ * 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 version 2.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/videodev2.h>
+#include <linux/slab.h>
+
+#include <mach/hardware.h>
+#include <mach/mux.h>
+#include <mach/io.h>
+#include <mach/i2c.h>
+
+#include <linux/io.h>
+
+#include <media/davinci/vpbe_types.h>
+#include <media/davinci/vpbe_venc.h>
+#include <media/davinci/vpss.h>
+#include <media/v4l2-device.h>
+
+#include "vpbe_venc_regs.h"
+
+#define MODULE_NAME VPBE_VENC_SUBDEV_NAME
+
+static int debug = 2;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level 0-2");
+
+struct venc_state {
+ struct v4l2_subdev sd;
+ struct venc_callback *callback;
+ struct venc_platform_data *pdata;
+ struct device *pdev;
+ u32 output;
+ v4l2_std_id std;
+ spinlock_t lock;
+ void __iomem *venc_base;
+ void __iomem *vdaccfg_reg;
+};
+
+static inline struct venc_state *to_state(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct venc_state, sd);
+}
+
+static inline u32 venc_read(struct v4l2_subdev *sd, u32 offset)
+{
+ struct venc_state *venc = to_state(sd);
+
+ return readl(venc->venc_base + offset);
+}
+
+static inline u32 venc_write(struct v4l2_subdev *sd, u32 offset, u32 val)
+{
+ struct venc_state *venc = to_state(sd);
+
+ writel(val, (venc->venc_base + offset));
+
+ return val;
+}
+
+static inline u32 venc_modify(struct v4l2_subdev *sd, u32 offset,
+ u32 val, u32 mask)
+{
+ u32 new_val = (venc_read(sd, offset) & ~mask) | (val & mask);
+
+ venc_write(sd, offset, new_val);
+
+ return new_val;
+}
+
+static inline u32 vdaccfg_write(struct v4l2_subdev *sd, u32 val)
+{
+ struct venc_state *venc = to_state(sd);
+
+ writel(val, venc->vdaccfg_reg);
+
+ val = readl(venc->vdaccfg_reg);
+
+ return val;
+}
+
+/* This function sets the dac of the VPBE for various outputs
+ */
+static int venc_set_dac(struct v4l2_subdev *sd, u32 out_index)
+{
+ switch (out_index) {
+ case 0:
+ v4l2_dbg(debug, 1, sd, "Setting output to Composite\n");
+ venc_write(sd, VENC_DACSEL, 0);
+ break;
+ case 1:
+ v4l2_dbg(debug, 1, sd, "Setting output to S-Video\n");
+ venc_write(sd, VENC_DACSEL, 0x210);
+ break;
+ case 2:
+ venc_write(sd, VENC_DACSEL, 0x543);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void venc_enabledigitaloutput(struct v4l2_subdev *sd, int benable)
+{
+ v4l2_dbg(debug, 2, sd, "venc_enabledigitaloutput\n");
+
+ if (benable) {
+ venc_write(sd, VENC_VMOD, 0);
+ venc_write(sd, VENC_CVBS, 0);
+ venc_write(sd, VENC_LCDOUT, 0);
+ venc_write(sd, VENC_HSPLS, 0);
+ venc_write(sd, VENC_HSTART, 0);
+ venc_write(sd, VENC_HVALID, 0);
+ venc_write(sd, VENC_HINT, 0);
+ venc_write(sd, VENC_VSPLS, 0);
+ venc_write(sd, VENC_VSTART, 0);
+ venc_write(sd, VENC_VVALID, 0);
+ venc_write(sd, VENC_VINT, 0);
+ venc_write(sd, VENC_YCCCTL, 0);
+ venc_write(sd, VENC_DACSEL, 0);
+
+ } else {
+ venc_write(sd, VENC_VMOD, 0);
+ /* disable VCLK output pin enable */
+ venc_write(sd, VENC_VIDCTL, 0x141);
+
+ /* Disable output sync pins */
+ venc_write(sd, VENC_SYNCCTL, 0);
+
+ /* Disable DCLOCK */
+ venc_write(sd, VENC_DCLKCTL, 0);
+ venc_write(sd, VENC_DRGBX1, 0x0000057C);
+
+ /* Disable LCD output control (accepting default polarity) */
+ venc_write(sd, VENC_LCDOUT, 0);
+ venc_write(sd, VENC_CMPNT, 0x100);
+ venc_write(sd, VENC_HSPLS, 0);
+ venc_write(sd, VENC_HINT, 0);
+ venc_write(sd, VENC_HSTART, 0);
+ venc_write(sd, VENC_HVALID, 0);
+
+ venc_write(sd, VENC_VSPLS, 0);
+ venc_write(sd, VENC_VINT, 0);
+ venc_write(sd, VENC_VSTART, 0);
+ venc_write(sd, VENC_VVALID, 0);
+
+ venc_write(sd, VENC_HSDLY, 0);
+ venc_write(sd, VENC_VSDLY, 0);
+
+ venc_write(sd, VENC_YCCCTL, 0);
+ venc_write(sd, VENC_VSTARTA, 0);
+
+ /* Set OSD clock and OSD Sync Adavance registers */
+ venc_write(sd, VENC_OSDCLK0, 1);
+ venc_write(sd, VENC_OSDCLK1, 2);
+ }
+}
+
+/*
+ * setting NTSC mode
+ */
+static int venc_set_ntsc(struct v4l2_subdev *sd)
+{
+ struct venc_state *venc = to_state(sd);
+ struct venc_platform_data *pdata = venc->pdata;
+
+ v4l2_dbg(debug, 2, sd, "venc_set_ntsc\n");
+
+ /* Setup clock at VPSS & VENC for SD */
+ vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
+ if (pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_525_60) < 0)
+ return -EINVAL;
+
+ venc_enabledigitaloutput(sd, 0);
+
+ /* to set VENC CLK DIV to 1 - final clock is 54 MHz */
+ venc_modify(sd, VENC_VIDCTL, 0, 1 << 1);
+ /* Set REC656 Mode */
+ venc_write(sd, VENC_YCCCTL, 0x1);
+ venc_modify(sd, VENC_VDPRO, 0, VENC_VDPRO_DAFRQ);
+ venc_modify(sd, VENC_VDPRO, 0, VENC_VDPRO_DAUPS);
+
+ venc_write(sd, VENC_VMOD, 0);
+ venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
+ VENC_VMOD_VIE);
+ venc_modify(sd, VENC_VMOD, (0 << VENC_VMOD_VMD), VENC_VMOD_VMD);
+ venc_modify(sd, VENC_VMOD, (0 << VENC_VMOD_TVTYP_SHIFT),
+ VENC_VMOD_TVTYP);
+ venc_write(sd, VENC_DACTST, 0x0);
+ venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
+
+ return 0;
+}
+
+/*
+ * setting PAL mode
+ */
+static int venc_set_pal(struct v4l2_subdev *sd)
+{
+ struct venc_state *venc = to_state(sd);
+
+ v4l2_dbg(debug, 2, sd, "venc_set_pal\n");
+
+ /* Setup clock at VPSS & VENC for SD */
+ vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
+ if (venc->pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_625_50) < 0)
+ return -EINVAL;
+
+ venc_enabledigitaloutput(sd, 0);
+
+ /* to set VENC CLK DIV to 1 - final clock is 54 MHz */
+ venc_modify(sd, VENC_VIDCTL, 0, 1 << 1);
+ /* Set REC656 Mode */
+ venc_write(sd, VENC_YCCCTL, 0x1);
+
+ venc_modify(sd, VENC_SYNCCTL, 1 << VENC_SYNCCTL_OVD_SHIFT,
+ VENC_SYNCCTL_OVD);
+ venc_write(sd, VENC_VMOD, 0);
+ venc_modify(sd, VENC_VMOD,
+ (1 << VENC_VMOD_VIE_SHIFT),
+ VENC_VMOD_VIE);
+ venc_modify(sd, VENC_VMOD,
+ (0 << VENC_VMOD_VMD), VENC_VMOD_VMD);
+ venc_modify(sd, VENC_VMOD,
+ (1 << VENC_VMOD_TVTYP_SHIFT),
+ VENC_VMOD_TVTYP);
+ venc_write(sd, VENC_DACTST, 0x0);
+ venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
+
+ return 0;
+}
+
+/*
+ * venc_set_480p59_94
+ *
+ * This function configures the video encoder to EDTV(525p) component setting.
+ */
+static int venc_set_480p59_94(struct v4l2_subdev *sd)
+{
+ struct venc_state *venc = to_state(sd);
+ struct venc_platform_data *pdata = venc->pdata;
+
+ v4l2_dbg(debug, 2, sd, "venc_set_480p59_94\n");
+
+ /* Setup clock at VPSS & VENC for SD */
+ if (pdata->setup_clock(VPBE_ENC_DV_PRESET, V4L2_DV_480P59_94) < 0)
+ return -EINVAL;
+
+ venc_enabledigitaloutput(sd, 0);
+
+ venc_write(sd, VENC_OSDCLK0, 0);
+ venc_write(sd, VENC_OSDCLK1, 1);
+ venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
+ VENC_VDPRO_DAFRQ);
+ venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
+ VENC_VDPRO_DAUPS);
+ venc_write(sd, VENC_VMOD, 0);
+ venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
+ VENC_VMOD_VIE);
+ venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
+ venc_modify(sd, VENC_VMOD, (HDTV_525P << VENC_VMOD_TVTYP_SHIFT),
+ VENC_VMOD_TVTYP);
+ venc_modify(sd, VENC_VMOD, VENC_VMOD_VDMD_YCBCR8 <<
+ VENC_VMOD_VDMD_SHIFT, VENC_VMOD_VDMD);
+
+ venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
+
+ return 0;
+}
+
+/*
+ * venc_set_625p
+ *
+ * This function configures the video encoder to HDTV(625p) component setting
+ */
+static int venc_set_576p50(struct v4l2_subdev *sd)
+{
+ struct venc_state *venc = to_state(sd);
+ struct venc_platform_data *pdata = venc->pdata;
+
+ v4l2_dbg(debug, 2, sd, "venc_set_576p50\n");
+
+ /* Setup clock at VPSS & VENC for SD */
+ if (pdata->setup_clock(VPBE_ENC_DV_PRESET, V4L2_DV_576P50) < 0)
+ return -EINVAL;
+
+ venc_enabledigitaloutput(sd, 0);
+
+ venc_write(sd, VENC_OSDCLK0, 0);
+ venc_write(sd, VENC_OSDCLK1, 1);
+
+ venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
+ VENC_VDPRO_DAFRQ);
+ venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
+ VENC_VDPRO_DAUPS);
+
+ venc_write(sd, VENC_VMOD, 0);
+ venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
+ VENC_VMOD_VIE);
+ venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
+ venc_modify(sd, VENC_VMOD, (HDTV_625P << VENC_VMOD_TVTYP_SHIFT),
+ VENC_VMOD_TVTYP);
+
+ venc_modify(sd, VENC_VMOD, VENC_VMOD_VDMD_YCBCR8 <<
+ VENC_VMOD_VDMD_SHIFT, VENC_VMOD_VDMD);
+ venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
+
+ return 0;
+}
+
+static int venc_s_std_output(struct v4l2_subdev *sd, v4l2_std_id norm)
+{
+ v4l2_dbg(debug, 1, sd, "venc_s_std_output\n");
+
+ if (norm & V4L2_STD_525_60)
+ return venc_set_ntsc(sd);
+ else if (norm & V4L2_STD_625_50)
+ return venc_set_pal(sd);
+
+ return -EINVAL;
+}
+
+static int venc_s_dv_preset(struct v4l2_subdev *sd,
+ struct v4l2_dv_preset *dv_preset)
+{
+ v4l2_dbg(debug, 1, sd, "venc_s_dv_preset\n");
+
+ if (dv_preset->preset == V4L2_DV_576P50)
+ return venc_set_576p50(sd);
+ else if (dv_preset->preset == V4L2_DV_480P59_94)
+ return venc_set_480p59_94(sd);
+
+ return -EINVAL;
+}
+
+static int venc_s_routing(struct v4l2_subdev *sd, u32 input, u32 output,
+ u32 config)
+{
+ struct venc_state *venc = to_state(sd);
+ int ret;
+
+ v4l2_dbg(debug, 1, sd, "venc_s_routing\n");
+
+ ret = venc_set_dac(sd, output);
+ if (!ret)
+ venc->output = output;
+
+ return ret;
+}
+
+static long venc_ioctl(struct v4l2_subdev *sd,
+ unsigned int cmd,
+ void *arg)
+{
+ u32 val;
+
+ switch (cmd) {
+ case VENC_GET_FLD:
+ val = venc_read(sd, VENC_VSTAT);
+ *((int *)arg) = ((val & VENC_VSTAT_FIDST) ==
+ VENC_VSTAT_FIDST);
+ break;
+ default:
+ v4l2_err(sd, "Wrong IOCTL cmd\n");
+ break;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops venc_core_ops = {
+ .ioctl = venc_ioctl,
+};
+
+static const struct v4l2_subdev_video_ops venc_video_ops = {
+ .s_routing = venc_s_routing,
+ .s_std_output = venc_s_std_output,
+ .s_dv_preset = venc_s_dv_preset,
+};
+
+static const struct v4l2_subdev_ops venc_ops = {
+ .core = &venc_core_ops,
+ .video = &venc_video_ops,
+};
+
+static int venc_initialize(struct v4l2_subdev *sd)
+{
+ struct venc_state *venc = to_state(sd);
+ int ret;
+
+ /* Set default to output to composite and std to NTSC */
+ venc->output = 0;
+ venc->std = V4L2_STD_525_60;
+
+ ret = venc_s_routing(sd, 0, venc->output, 0);
+ if (ret < 0) {
+ v4l2_err(sd, "Error setting output during init\n");
+ return -EINVAL;
+ }
+
+ ret = venc_s_std_output(sd, venc->std);
+ if (ret < 0) {
+ v4l2_err(sd, "Error setting std during init\n");
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static int venc_device_get(struct device *dev, void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct venc_state **venc = data;
+
+ if (strcmp(MODULE_NAME, pdev->name) == 0)
+ *venc = platform_get_drvdata(pdev);
+
+ return 0;
+}
+
+struct v4l2_subdev *venc_sub_dev_init(struct v4l2_device *v4l2_dev,
+ const char *venc_name)
+{
+ struct venc_state *venc;
+ int err;
+
+ err = bus_for_each_dev(&platform_bus_type, NULL, &venc,
+ venc_device_get);
+ if (venc == NULL)
+ return NULL;
+
+ v4l2_subdev_init(&venc->sd, &venc_ops);
+
+ strcpy(venc->sd.name, venc_name);
+ if (v4l2_device_register_subdev(v4l2_dev, &venc->sd) < 0) {
+ v4l2_err(v4l2_dev,
+ "vpbe unable to register venc sub device\n");
+ return NULL;
+ }
+ if (venc_initialize(&venc->sd)) {
+ v4l2_err(v4l2_dev,
+ "vpbe venc initialization failed\n");
+ return NULL;
+ }
+
+ return &venc->sd;
+}
+EXPORT_SYMBOL(venc_sub_dev_init);
+
+static int venc_probe(struct platform_device *pdev)
+{
+ struct venc_state *venc;
+ struct resource *res;
+ int ret;
+
+ venc = kzalloc(sizeof(struct venc_state), GFP_KERNEL);
+ if (venc == NULL)
+ return -ENOMEM;
+
+ venc->pdev = &pdev->dev;
+ venc->pdata = pdev->dev.platform_data;
+ if (NULL == venc->pdata) {
+ dev_err(venc->pdev, "Unable to get platform data for"
+ " VENC sub device");
+ ret = -ENOENT;
+ goto free_mem;
+ }
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(venc->pdev,
+ "Unable to get VENC register address map\n");
+ ret = -ENODEV;
+ goto free_mem;
+ }
+
+ if (!request_mem_region(res->start, resource_size(res), "venc")) {
+ dev_err(venc->pdev, "Unable to reserve VENC MMIO region\n");
+ ret = -ENODEV;
+ goto free_mem;
+ }
+
+ venc->venc_base = ioremap_nocache(res->start, resource_size(res));
+ if (!venc->venc_base) {
+ dev_err(venc->pdev, "Unable to map VENC IO space\n");
+ ret = -ENODEV;
+ goto release_venc_mem_region;
+ }
+
+ spin_lock_init(&venc->lock);
+ platform_set_drvdata(pdev, venc);
+ dev_notice(venc->pdev, "VENC sub device probe success\n");
+ return 0;
+
+release_venc_mem_region:
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(res->start, resource_size(res));
+free_mem:
+ kfree(venc);
+ return ret;
+}
+
+static int venc_remove(struct platform_device *pdev)
+{
+ struct venc_state *venc = platform_get_drvdata(pdev);
+ struct resource *res;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ iounmap((void *)venc->venc_base);
+ release_mem_region(res->start, resource_size(res));
+ kfree(venc);
+
+ return 0;
+}
+
+static struct platform_driver venc_driver = {
+ .probe = venc_probe,
+ .remove = venc_remove,
+ .driver = {
+ .name = MODULE_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int venc_init(void)
+{
+ if (platform_driver_register(&venc_driver)) {
+ printk(KERN_ERR "Unable to register venc driver\n");
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static void venc_exit(void)
+{
+ platform_driver_unregister(&venc_driver);
+ return;
+}
+
+module_init(venc_init);
+module_exit(venc_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("VPBE VENC Driver");
+MODULE_AUTHOR("Texas Instruments");