diff options
Diffstat (limited to 'drivers/staging/dt3155v4l/dt3155v4l.c')
| -rw-r--r-- | drivers/staging/dt3155v4l/dt3155v4l.c | 1205 |
1 files changed, 0 insertions, 1205 deletions
diff --git a/drivers/staging/dt3155v4l/dt3155v4l.c b/drivers/staging/dt3155v4l/dt3155v4l.c deleted file mode 100644 index b996697e7eb..00000000000 --- a/drivers/staging/dt3155v4l/dt3155v4l.c +++ /dev/null @@ -1,1205 +0,0 @@ -/*************************************************************************** - * Copyright (C) 2006-2010 by Marin Mitov * - * mitov@issp.bas.bg * - * * - * 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. * - * * - * 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/version.h> -#include <linux/stringify.h> -#include <linux/delay.h> -#include <linux/kthread.h> -#include <media/v4l2-dev.h> -#include <media/v4l2-ioctl.h> -#include <media/videobuf-dma-contig.h> - -#include "dt3155v4l.h" - -#define DT3155_VENDOR_ID 0x8086 -#define DT3155_DEVICE_ID 0x1223 - -/* DT3155_CHUNK_SIZE is 4M (2^22) 8 full size buffers */ -#define DT3155_CHUNK_SIZE (1U << 22) - -#define DT3155_COH_FLAGS (GFP_KERNEL | GFP_DMA32 | __GFP_COLD | __GFP_NOWARN) - -#define DT3155_BUF_SIZE (768 * 576) - -/* global initializers (for all boards) */ -#ifdef CONFIG_DT3155_CCIR -static const u8 csr2_init = VT_50HZ; -#define DT3155_CURRENT_NORM V4L2_STD_625_50 -static const unsigned int img_width = 768; -static const unsigned int img_height = 576; -static const unsigned int frames_per_sec = 25; -static const struct v4l2_fmtdesc frame_std[] = { - { - .index = 0, - .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, - .flags = 0, - .description = "CCIR/50Hz 8 bits gray", - .pixelformat = V4L2_PIX_FMT_GREY, - }, -}; -#else -static const u8 csr2_init = VT_60HZ; -#define DT3155_CURRENT_NORM V4L2_STD_525_60 -static const unsigned int img_width = 640; -static const unsigned int img_height = 480; -static const unsigned int frames_per_sec = 30; -static const struct v4l2_fmtdesc frame_std[] = { - { - .index = 0, - .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, - .flags = 0, - .description = "RS-170/60Hz 8 bits gray", - .pixelformat = V4L2_PIX_FMT_GREY, - }, -}; -#endif - -#define NUM_OF_FORMATS ARRAY_SIZE(frame_std) - -static u8 config_init = ACQ_MODE_EVEN; - -/** - * read_i2c_reg - reads an internal i2c register - * - * @addr: dt3155 mmio base address - * @index: index (internal address) of register to read - * @data: pointer to byte the read data will be placed in - * - * returns: zero on success or error code - * - * This function starts reading the specified (by index) register - * and busy waits for the process to finish. The result is placed - * in a byte pointed by data. - */ -static int -read_i2c_reg(void __iomem *addr, u8 index, u8 *data) -{ - u32 tmp = index; - - iowrite32((tmp<<17) | IIC_READ, addr + IIC_CSR2); - mmiowb(); - udelay(45); /* wait at least 43 usec for NEW_CYCLE to clear */ - if (ioread32(addr + IIC_CSR2) & NEW_CYCLE) { - /* error: NEW_CYCLE not cleared */ - printk(KERN_ERR "dt3155: NEW_CYCLE not cleared\n"); - return -EIO; - } - tmp = ioread32(addr + IIC_CSR1); - if (tmp & DIRECT_ABORT) { - /* error: DIRECT_ABORT set */ - printk(KERN_ERR "dt3155: DIRECT_ABORT set\n"); - /* reset DIRECT_ABORT bit */ - iowrite32(DIRECT_ABORT, addr + IIC_CSR1); - return -EIO; - } - *data = tmp>>24; - return 0; -} - -/** - * write_i2c_reg - writes to an internal i2c register - * - * @addr: dt3155 mmio base address - * @index: index (internal address) of register to read - * @data: data to be written - * - * returns: zero on success or error code - * - * This function starts writting the specified (by index) register - * and busy waits for the process to finish. - */ -static int -write_i2c_reg(void __iomem *addr, u8 index, u8 data) -{ - u32 tmp = index; - - iowrite32((tmp<<17) | IIC_WRITE | data, addr + IIC_CSR2); - mmiowb(); - udelay(65); /* wait at least 63 usec for NEW_CYCLE to clear */ - if (ioread32(addr + IIC_CSR2) & NEW_CYCLE) { - /* error: NEW_CYCLE not cleared */ - printk(KERN_ERR "dt3155: NEW_CYCLE not cleared\n"); - return -EIO; - } - if (ioread32(addr + IIC_CSR1) & DIRECT_ABORT) { - /* error: DIRECT_ABORT set */ - printk(KERN_ERR "dt3155: DIRECT_ABORT set\n"); - /* reset DIRECT_ABORT bit */ - iowrite32(DIRECT_ABORT, addr + IIC_CSR1); - return -EIO; - } - return 0; -} - -/** - * write_i2c_reg_nowait - writes to an internal i2c register - * - * @addr: dt3155 mmio base address - * @index: index (internal address) of register to read - * @data: data to be written - * - * This function starts writting the specified (by index) register - * and then returns. - */ -static void write_i2c_reg_nowait(void __iomem *addr, u8 index, u8 data) -{ - u32 tmp = index; - - iowrite32((tmp<<17) | IIC_WRITE | data, addr + IIC_CSR2); - mmiowb(); -} - -/** - * wait_i2c_reg - waits the read/write to finish - * - * @addr: dt3155 mmio base address - * - * returns: zero on success or error code - * - * This function waits reading/writting to finish. - */ -static int wait_i2c_reg(void __iomem *addr) -{ - if (ioread32(addr + IIC_CSR2) & NEW_CYCLE) - udelay(65); /* wait at least 63 usec for NEW_CYCLE to clear */ - if (ioread32(addr + IIC_CSR2) & NEW_CYCLE) { - /* error: NEW_CYCLE not cleared */ - printk(KERN_ERR "dt3155: NEW_CYCLE not cleared\n"); - return -EIO; - } - if (ioread32(addr + IIC_CSR1) & DIRECT_ABORT) { - /* error: DIRECT_ABORT set */ - printk(KERN_ERR "dt3155: DIRECT_ABORT set\n"); - /* reset DIRECT_ABORT bit */ - iowrite32(DIRECT_ABORT, addr + IIC_CSR1); - return -EIO; - } - return 0; -} - -static int -dt3155_start_acq(struct dt3155_priv *pd) -{ - struct videobuf_buffer *vb = pd->curr_buf; - dma_addr_t dma_addr; - - dma_addr = videobuf_to_dma_contig(vb); - iowrite32(dma_addr, pd->regs + EVEN_DMA_START); - iowrite32(dma_addr + vb->width, pd->regs + ODD_DMA_START); - iowrite32(vb->width, pd->regs + EVEN_DMA_STRIDE); - iowrite32(vb->width, pd->regs + ODD_DMA_STRIDE); - /* enable interrupts, clear all irq flags */ - iowrite32(FLD_START_EN | FLD_END_ODD_EN | FLD_START | - FLD_END_EVEN | FLD_END_ODD, pd->regs + INT_CSR); - iowrite32(FIFO_EN | SRST | FLD_CRPT_ODD | FLD_CRPT_EVEN | - FLD_DN_ODD | FLD_DN_EVEN | CAP_CONT_EVEN | CAP_CONT_ODD, - pd->regs + CSR1); - wait_i2c_reg(pd->regs); - write_i2c_reg(pd->regs, CONFIG, pd->config); - write_i2c_reg(pd->regs, EVEN_CSR, CSR_ERROR | CSR_DONE); - write_i2c_reg(pd->regs, ODD_CSR, CSR_ERROR | CSR_DONE); - - /* start the board */ - write_i2c_reg(pd->regs, CSR2, pd->csr2 | BUSY_EVEN | BUSY_ODD); - return 0; /* success */ -} - -static int -dt3155_stop_acq(struct dt3155_priv *pd) -{ - int tmp; - - /* stop the board */ - wait_i2c_reg(pd->regs); - write_i2c_reg(pd->regs, CSR2, pd->csr2); - - /* disable all irqs, clear all irq flags */ - iowrite32(FLD_START | FLD_END_EVEN | FLD_END_ODD, pd->regs + INT_CSR); - write_i2c_reg(pd->regs, EVEN_CSR, CSR_ERROR | CSR_DONE); - write_i2c_reg(pd->regs, ODD_CSR, CSR_ERROR | CSR_DONE); - tmp = ioread32(pd->regs + CSR1) & (FLD_CRPT_EVEN | FLD_CRPT_ODD); - if (tmp) - printk(KERN_ERR "dt3155: corrupted field %u\n", tmp); - iowrite32(FIFO_EN | SRST | FLD_CRPT_ODD | FLD_CRPT_EVEN | - FLD_DN_ODD | FLD_DN_EVEN | CAP_CONT_EVEN | CAP_CONT_ODD, - pd->regs + CSR1); - return 0; -} - -/* Locking: Caller holds q->vb_lock */ -static int -dt3155_buf_setup(struct videobuf_queue *q, unsigned int *count, - unsigned int *size) -{ - *size = img_width * img_height; - return 0; -} - -/* Locking: Caller holds q->vb_lock */ -static int -dt3155_buf_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb, - enum v4l2_field field) -{ - int ret = 0; - - vb->width = img_width; - vb->height = img_height; - vb->size = img_width * img_height; - vb->field = field; - if (vb->state == VIDEOBUF_NEEDS_INIT) - ret = videobuf_iolock(q, vb, NULL); - if (ret) { - vb->state = VIDEOBUF_ERROR; - printk(KERN_ERR "ERROR: videobuf_iolock() failed\n"); - videobuf_dma_contig_free(q, vb); /* FIXME: needed? */ - } else - vb->state = VIDEOBUF_PREPARED; - return ret; -} - -/* Locking: Caller holds q->vb_lock & q->irqlock */ -static void -dt3155_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) -{ - struct dt3155_priv *pd = q->priv_data; - - if (vb->state != VIDEOBUF_NEEDS_INIT) { - vb->state = VIDEOBUF_QUEUED; - list_add_tail(&vb->queue, &pd->dmaq); - wake_up_interruptible_sync(&pd->do_dma); - } else - vb->state = VIDEOBUF_ERROR; -} - -/* Locking: Caller holds q->vb_lock */ -static void -dt3155_buf_release(struct videobuf_queue *q, struct videobuf_buffer *vb) -{ - if (vb->state == VIDEOBUF_ACTIVE) - videobuf_waiton(q, vb, 0, 0); /* FIXME: cannot be interrupted */ - videobuf_dma_contig_free(q, vb); - vb->state = VIDEOBUF_NEEDS_INIT; -} - -static struct videobuf_queue_ops vbq_ops = { - .buf_setup = dt3155_buf_setup, - .buf_prepare = dt3155_buf_prepare, - .buf_queue = dt3155_buf_queue, - .buf_release = dt3155_buf_release, -}; - -static irqreturn_t -dt3155_irq_handler_even(int irq, void *dev_id) -{ - struct dt3155_priv *ipd = dev_id; - struct videobuf_buffer *ivb; - dma_addr_t dma_addr; - u32 tmp; - - tmp = ioread32(ipd->regs + INT_CSR) & (FLD_START | FLD_END_ODD); - if (!tmp) - return IRQ_NONE; /* not our irq */ - if ((tmp & FLD_START) && !(tmp & FLD_END_ODD)) { - iowrite32(FLD_START_EN | FLD_END_ODD_EN | FLD_START, - ipd->regs + INT_CSR); - ipd->field_count++; - return IRQ_HANDLED; /* start of field irq */ - } - if ((tmp & FLD_START) && (tmp & FLD_END_ODD)) { - if (!ipd->stats.start_before_end++) - printk(KERN_ERR "dt3155: irq: START before END\n"); - } - /* check for corrupted fields */ -/* write_i2c_reg(ipd->regs, EVEN_CSR, CSR_ERROR | CSR_DONE); */ -/* write_i2c_reg(ipd->regs, ODD_CSR, CSR_ERROR | CSR_DONE); */ - tmp = ioread32(ipd->regs + CSR1) & (FLD_CRPT_EVEN | FLD_CRPT_ODD); - if (tmp) { - if (!ipd->stats.corrupted_fields++) - printk(KERN_ERR "dt3155: corrupted field %u\n", tmp); - iowrite32(FIFO_EN | SRST | FLD_CRPT_ODD | FLD_CRPT_EVEN | - FLD_DN_ODD | FLD_DN_EVEN | - CAP_CONT_EVEN | CAP_CONT_ODD, - ipd->regs + CSR1); - mmiowb(); - } - - spin_lock(&ipd->lock); - if (ipd->curr_buf && ipd->curr_buf->state == VIDEOBUF_ACTIVE) { - if (waitqueue_active(&ipd->curr_buf->done)) { - do_gettimeofday(&ipd->curr_buf->ts); - ipd->curr_buf->field_count = ipd->field_count; - ipd->curr_buf->state = VIDEOBUF_DONE; - wake_up(&ipd->curr_buf->done); - } else { - ivb = ipd->curr_buf; - goto load_dma; - } - } else - goto stop_dma; - if (list_empty(&ipd->dmaq)) - goto stop_dma; - ivb = list_first_entry(&ipd->dmaq, typeof(*ivb), queue); - list_del(&ivb->queue); - if (ivb->state == VIDEOBUF_QUEUED) { - ivb->state = VIDEOBUF_ACTIVE; - ipd->curr_buf = ivb; - } else - goto stop_dma; -load_dma: - dma_addr = videobuf_to_dma_contig(ivb); - iowrite32(dma_addr, ipd->regs + EVEN_DMA_START); - iowrite32(dma_addr + ivb->width, ipd->regs + ODD_DMA_START); - iowrite32(ivb->width, ipd->regs + EVEN_DMA_STRIDE); - iowrite32(ivb->width, ipd->regs + ODD_DMA_STRIDE); - mmiowb(); - /* enable interrupts, clear all irq flags */ - iowrite32(FLD_START_EN | FLD_END_ODD_EN | FLD_START | - FLD_END_EVEN | FLD_END_ODD, ipd->regs + INT_CSR); - spin_unlock(&ipd->lock); - return IRQ_HANDLED; - -stop_dma: - ipd->curr_buf = NULL; - /* stop the board */ - write_i2c_reg_nowait(ipd->regs, CSR2, ipd->csr2); - /* disable interrupts, clear all irq flags */ - iowrite32(FLD_START | FLD_END_EVEN | FLD_END_ODD, ipd->regs + INT_CSR); - spin_unlock(&ipd->lock); - return IRQ_HANDLED; -} - -static int -dt3155_threadfn(void *arg) -{ - struct dt3155_priv *pd = arg; - struct videobuf_buffer *vb; - unsigned long flags; - - while (1) { - wait_event_interruptible(pd->do_dma, - kthread_should_stop() || !list_empty(&pd->dmaq)); - if (kthread_should_stop()) - break; - - spin_lock_irqsave(&pd->lock, flags); - if (pd->curr_buf) /* dma is active */ - goto done; - if (list_empty(&pd->dmaq)) /* no empty biffers */ - goto done; - vb = list_first_entry(&pd->dmaq, typeof(*vb), queue); - list_del(&vb->queue); - if (vb->state == VIDEOBUF_QUEUED) { - vb->state = VIDEOBUF_ACTIVE; - pd->curr_buf = vb; - spin_unlock_irqrestore(&pd->lock, flags); - /* start dma */ - dt3155_start_acq(pd); - continue; - } else - printk(KERN_DEBUG "%s(): This is a BUG\n", __func__); -done: - spin_unlock_irqrestore(&pd->lock, flags); - } - return 0; -} - -static int -dt3155_open(struct file *filp) -{ - int ret = 0; - struct dt3155_priv *pd = video_drvdata(filp); - - printk(KERN_INFO "dt3155: open(): minor: %i\n", pd->vdev->minor); - - if (mutex_lock_interruptible(&pd->mux) == -EINTR) - return -ERESTARTSYS; - if (!pd->users) { - pd->vidq = kzalloc(sizeof(*pd->vidq), GFP_KERNEL); - if (!pd->vidq) { - printk(KERN_ERR "dt3155: error: alloc queue\n"); - ret = -ENOMEM; - goto err_alloc_queue; - } - videobuf_queue_dma_contig_init(pd->vidq, &vbq_ops, - &pd->pdev->dev, &pd->lock, - V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE, - sizeof(struct videobuf_buffer), pd, NULL); - /* disable all irqs, clear all irq flags */ - iowrite32(FLD_START | FLD_END_EVEN | FLD_END_ODD, - pd->regs + INT_CSR); - pd->irq_handler = dt3155_irq_handler_even; - ret = request_irq(pd->pdev->irq, pd->irq_handler, - IRQF_SHARED, DT3155_NAME, pd); - if (ret) { - printk(KERN_ERR "dt3155: error: request_irq\n"); - goto err_request_irq; - } - pd->curr_buf = NULL; - pd->thread = kthread_run(dt3155_threadfn, pd, - "dt3155_thread_%i", pd->vdev->minor); - if (IS_ERR(pd->thread)) { - printk(KERN_ERR "dt3155: kthread_run() failed\n"); - ret = PTR_ERR(pd->thread); - goto err_thread; - } - pd->field_count = 0; - } - pd->users++; - goto done; -err_thread: - free_irq(pd->pdev->irq, pd); -err_request_irq: - kfree(pd->vidq); - pd->vidq = NULL; -err_alloc_queue: -done: - mutex_unlock(&pd->mux); - return ret; -} - -static int -dt3155_release(struct file *filp) -{ - struct dt3155_priv *pd = video_drvdata(filp); - struct videobuf_buffer *tmp; - unsigned long flags; - int ret = 0; - - printk(KERN_INFO "dt3155: release(): minor: %i\n", pd->vdev->minor); - - if (mutex_lock_interruptible(&pd->mux) == -EINTR) - return -ERESTARTSYS; - pd->users--; - BUG_ON(pd->users < 0); - if (pd->acq_fp == filp) { - spin_lock_irqsave(&pd->lock, flags); - INIT_LIST_HEAD(&pd->dmaq); /* queue is emptied */ - tmp = pd->curr_buf; - spin_unlock_irqrestore(&pd->lock, flags); - if (tmp) - videobuf_waiton(pd->vidq, tmp, 0, 1); /* block, interruptible */ - dt3155_stop_acq(pd); - videobuf_stop(pd->vidq); - pd->acq_fp = NULL; - pd->streaming = 0; - } - if (!pd->users) { - kthread_stop(pd->thread); - free_irq(pd->pdev->irq, pd); - kfree(pd->vidq); - pd->vidq = NULL; - } - mutex_unlock(&pd->mux); - return ret; -} - -static ssize_t -dt3155_read(struct file *filp, char __user *user, size_t size, loff_t *loff) -{ - struct dt3155_priv *pd = video_drvdata(filp); - int ret; - - if (mutex_lock_interruptible(&pd->mux) == -EINTR) - return -ERESTARTSYS; - if (!pd->acq_fp) { - pd->acq_fp = filp; - pd->streaming = 0; - } else if (pd->acq_fp != filp) { - ret = -EBUSY; - goto done; - } else if (pd->streaming == 1) { - ret = -EINVAL; - goto done; - } - ret = videobuf_read_stream(pd->vidq, user, size, loff, 0, - filp->f_flags & O_NONBLOCK); -done: - mutex_unlock(&pd->mux); - return ret; -} - -static unsigned int -dt3155_poll(struct file *filp, struct poll_table_struct *polltbl) -{ - struct dt3155_priv *pd = video_drvdata(filp); - - return videobuf_poll_stream(filp, pd->vidq, polltbl); -} - -static int -dt3155_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct dt3155_priv *pd = video_drvdata(filp); - - return videobuf_mmap_mapper(pd->vidq, vma); -} - -static const struct v4l2_file_operations dt3155_fops = { - .owner = THIS_MODULE, - .open = dt3155_open, - .release = dt3155_release, - .read = dt3155_read, - .poll = dt3155_poll, - .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */ - .mmap = dt3155_mmap, -}; - -static int -dt3155_ioc_streamon(struct file *filp, void *p, enum v4l2_buf_type type) -{ - struct dt3155_priv *pd = video_drvdata(filp); - int ret = -ERESTARTSYS; - - if (mutex_lock_interruptible(&pd->mux) == -EINTR) - return ret; - if (!pd->acq_fp) { - ret = videobuf_streamon(pd->vidq); - if (ret) - goto unlock; - pd->acq_fp = filp; - pd->streaming = 1; - wake_up_interruptible_sync(&pd->do_dma); - } else if (pd->acq_fp == filp) { - pd->streaming = 1; - ret = videobuf_streamon(pd->vidq); - if (!ret) - wake_up_interruptible_sync(&pd->do_dma); - } else - ret = -EBUSY; -unlock: - mutex_unlock(&pd->mux); - return ret; -} - -static int -dt3155_ioc_streamoff(struct file *filp, void *p, enum v4l2_buf_type type) -{ - struct dt3155_priv *pd = video_drvdata(filp); - struct videobuf_buffer *tmp; - unsigned long flags; - int ret; - - ret = videobuf_streamoff(pd->vidq); - if (ret) - return ret; - spin_lock_irqsave(&pd->lock, flags); - tmp = pd->curr_buf; - spin_unlock_irqrestore(&pd->lock, flags); - if (tmp) - videobuf_waiton(pd->vidq, tmp, 0, 1); /* block, interruptible */ - return ret; -} - -static int -dt3155_ioc_querycap(struct file *filp, void *p, struct v4l2_capability *cap) -{ - struct dt3155_priv *pd = video_drvdata(filp); - - strcpy(cap->driver, DT3155_NAME); - strcpy(cap->card, DT3155_NAME " frame grabber"); - sprintf(cap->bus_info, "PCI:%s", pci_name(pd->pdev)); - cap->version = - KERNEL_VERSION(DT3155_VER_MAJ, DT3155_VER_MIN, DT3155_VER_EXT); - cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | - V4L2_CAP_STREAMING | - V4L2_CAP_READWRITE; - return 0; -} - -static int -dt3155_ioc_enum_fmt_vid_cap(struct file *filp, void *p, struct v4l2_fmtdesc *f) -{ - if (f->index >= NUM_OF_FORMATS) - return -EINVAL; - *f = frame_std[f->index]; - return 0; -} - -static int -dt3155_ioc_g_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f) -{ - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - f->fmt.pix.width = img_width; - f->fmt.pix.height = img_height; - f->fmt.pix.pixelformat = V4L2_PIX_FMT_GREY; - f->fmt.pix.field = V4L2_FIELD_NONE; - f->fmt.pix.bytesperline = f->fmt.pix.width; - f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height; - f->fmt.pix.colorspace = 0; - f->fmt.pix.priv = 0; - return 0; -} - -static int -dt3155_ioc_try_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f) -{ - if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - if (f->fmt.pix.width == img_width && - f->fmt.pix.height == img_height && - f->fmt.pix.pixelformat == V4L2_PIX_FMT_GREY && - f->fmt.pix.field == V4L2_FIELD_NONE && - f->fmt.pix.bytesperline == f->fmt.pix.width && - f->fmt.pix.sizeimage == f->fmt.pix.width * f->fmt.pix.height) - return 0; - else - return -EINVAL; -} - -static int -dt3155_ioc_s_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f) -{ - struct dt3155_priv *pd = video_drvdata(filp); - int ret = -ERESTARTSYS; - - if (mutex_lock_interruptible(&pd->mux) == -EINTR) - return ret; - if (!pd->acq_fp) { - pd->acq_fp = filp; - pd->streaming = 0; - } else if (pd->acq_fp != filp) { - ret = -EBUSY; - goto done; - } -/* FIXME: we don't change the format for now - if (pd->vidq->streaming || pd->vidq->reading || pd->curr_buff) { - ret = -EBUSY; - goto done; - } -*/ - ret = dt3155_ioc_g_fmt_vid_cap(filp, p, f); -done: - mutex_unlock(&pd->mux); - return ret; -} - -static int -dt3155_ioc_reqbufs(struct file *filp, void *p, struct v4l2_requestbuffers *b) -{ - struct dt3155_priv *pd = video_drvdata(filp); - struct videobuf_queue *q = pd->vidq; - int ret = -ERESTARTSYS; - - if (b->memory != V4L2_MEMORY_MMAP) - return -EINVAL; - if (mutex_lock_interruptible(&pd->mux) == -EINTR) - return ret; - if (!pd->acq_fp) - pd->acq_fp = filp; - else if (pd->acq_fp != filp) { - ret = -EBUSY; - goto done; - } - pd->streaming = 1; - ret = 0; -done: - mutex_unlock(&pd->mux); - if (ret) - return ret; - if (b->count) - ret = videobuf_reqbufs(q, b); - else { /* FIXME: is it necessary? */ - printk(KERN_DEBUG "dt3155: request to free buffers\n"); - /* ret = videobuf_mmap_free(q); */ - ret = dt3155_ioc_streamoff(filp, p, - V4L2_BUF_TYPE_VIDEO_CAPTURE); - } - return ret; -} - -static int -dt3155_ioc_querybuf(struct file *filp, void *p, struct v4l2_buffer *b) -{ - struct dt3155_priv *pd = video_drvdata(filp); - struct videobuf_queue *q = pd->vidq; - - return videobuf_querybuf(q, b); -} - -static int -dt3155_ioc_qbuf(struct file *filp, void *p, struct v4l2_buffer *b) -{ - struct dt3155_priv *pd = video_drvdata(filp); - struct videobuf_queue *q = pd->vidq; - int ret; - - ret = videobuf_qbuf(q, b); - if (ret) - return ret; - return videobuf_querybuf(q, b); -} - -static int -dt3155_ioc_dqbuf(struct file *filp, void *p, struct v4l2_buffer *b) -{ - struct dt3155_priv *pd = video_drvdata(filp); - struct videobuf_queue *q = pd->vidq; - - return videobuf_dqbuf(q, b, filp->f_flags & O_NONBLOCK); -} - -static int -dt3155_ioc_querystd(struct file *filp, void *p, v4l2_std_id *norm) -{ - *norm = DT3155_CURRENT_NORM; - return 0; -} - -static int -dt3155_ioc_g_std(struct file *filp, void *p, v4l2_std_id *norm) -{ - *norm = DT3155_CURRENT_NORM; - return 0; -} - -static int -dt3155_ioc_s_std(struct file *filp, void *p, v4l2_std_id *norm) -{ - if (*norm & DT3155_CURRENT_NORM) - return 0; - return -EINVAL; -} - -static int -dt3155_ioc_enum_input(struct file *filp, void *p, struct v4l2_input *input) -{ - if (input->index) - return -EINVAL; - strcpy(input->name, "Coax in"); - input->type = V4L2_INPUT_TYPE_CAMERA; - /* - * FIXME: input->std = 0 according to v4l2 API - * VIDIOC_G_STD, VIDIOC_S_STD, VIDIOC_QUERYSTD and VIDIOC_ENUMSTD - * should return -EINVAL - */ - input->std = DT3155_CURRENT_NORM; - input->status = 0;/* FIXME: add sync detection & V4L2_IN_ST_NO_H_LOCK */ - return 0; -} - -static int -dt3155_ioc_g_input(struct file *filp, void *p, unsigned int *i) -{ - *i = 0; - return 0; -} - -static int -dt3155_ioc_s_input(struct file *filp, void *p, unsigned int i) -{ - if (i) - return -EINVAL; - return 0; -} - -static int -dt3155_ioc_g_parm(struct file *filp, void *p, struct v4l2_streamparm *parms) -{ - if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - parms->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; - parms->parm.capture.capturemode = 0; - parms->parm.capture.timeperframe.numerator = 1001; - parms->parm.capture.timeperframe.denominator = frames_per_sec * 1000; - parms->parm.capture.extendedmode = 0; - parms->parm.capture.readbuffers = 1; /* FIXME: 2 buffers? */ - return 0; -} - -static int -dt3155_ioc_s_parm(struct file *filp, void *p, struct v4l2_streamparm *parms) -{ - if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - parms->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; - parms->parm.capture.capturemode = 0; - parms->parm.capture.timeperframe.numerator = 1001; - parms->parm.capture.timeperframe.denominator = frames_per_sec * 1000; - parms->parm.capture.extendedmode = 0; - parms->parm.capture.readbuffers = 1; /* FIXME: 2 buffers? */ - return 0; -} - -static const struct v4l2_ioctl_ops dt3155_ioctl_ops = { - .vidioc_streamon = dt3155_ioc_streamon, - .vidioc_streamoff = dt3155_ioc_streamoff, - .vidioc_querycap = dt3155_ioc_querycap, -/* - .vidioc_g_priority = dt3155_ioc_g_priority, - .vidioc_s_priority = dt3155_ioc_s_priority, -*/ - .vidioc_enum_fmt_vid_cap = dt3155_ioc_enum_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = dt3155_ioc_try_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = dt3155_ioc_g_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = dt3155_ioc_s_fmt_vid_cap, - .vidioc_reqbufs = dt3155_ioc_reqbufs, - .vidioc_querybuf = dt3155_ioc_querybuf, - .vidioc_qbuf = dt3155_ioc_qbuf, - .vidioc_dqbuf = dt3155_ioc_dqbuf, - .vidioc_querystd = dt3155_ioc_querystd, - .vidioc_g_std = dt3155_ioc_g_std, - .vidioc_s_std = dt3155_ioc_s_std, - .vidioc_enum_input = dt3155_ioc_enum_input, - .vidioc_g_input = dt3155_ioc_g_input, - .vidioc_s_input = dt3155_ioc_s_input, -/* - .vidioc_queryctrl = dt3155_ioc_queryctrl, - .vidioc_g_ctrl = dt3155_ioc_g_ctrl, - .vidioc_s_ctrl = dt3155_ioc_s_ctrl, - .vidioc_querymenu = dt3155_ioc_querymenu, - .vidioc_g_ext_ctrls = dt3155_ioc_g_ext_ctrls, - .vidioc_s_ext_ctrls = dt3155_ioc_s_ext_ctrls, -*/ - .vidioc_g_parm = dt3155_ioc_g_parm, - .vidioc_s_parm = dt3155_ioc_s_parm, -/* - .vidioc_cropcap = dt3155_ioc_cropcap, - .vidioc_g_crop = dt3155_ioc_g_crop, - .vidioc_s_crop = dt3155_ioc_s_crop, - .vidioc_enum_framesizes = dt3155_ioc_enum_framesizes, - .vidioc_enum_frameintervals = dt3155_ioc_enum_frameintervals, -#ifdef CONFIG_VIDEO_V4L1_COMPAT - .vidiocgmbuf = iocgmbuf, -#endif -*/ -}; - -static int __devinit -dt3155_init_board(struct pci_dev *dev) -{ - struct dt3155_priv *pd = pci_get_drvdata(dev); - void *buf_cpu; - dma_addr_t buf_dma; - int i; - u8 tmp; - - pci_set_master(dev); /* dt3155 needs it */ - - /* resetting the adapter */ - iowrite32(FLD_CRPT_ODD | FLD_CRPT_EVEN | FLD_DN_ODD | FLD_DN_EVEN, - pd->regs + CSR1); - mmiowb(); - msleep(10); - - /* initializing adaper registers */ - iowrite32(FIFO_EN | SRST, pd->regs + CSR1); - mmiowb(); - iowrite32(0xEEEEEE01, pd->regs + EVEN_PIXEL_FMT); - iowrite32(0xEEEEEE01, pd->regs + ODD_PIXEL_FMT); - iowrite32(0x00000020, pd->regs + FIFO_TRIGER); - iowrite32(0x00000103, pd->regs + XFER_MODE); - iowrite32(0, pd->regs + RETRY_WAIT_CNT); - iowrite32(0, pd->regs + INT_CSR); - iowrite32(1, pd->regs + EVEN_FLD_MASK); - iowrite32(1, pd->regs + ODD_FLD_MASK); - iowrite32(0, pd->regs + MASK_LENGTH); - iowrite32(0x0005007C, pd->regs + FIFO_FLAG_CNT); - iowrite32(0x01010101, pd->regs + IIC_CLK_DUR); - mmiowb(); - - /* verifying that we have a DT3155 board (not just a SAA7116 chip) */ - read_i2c_reg(pd->regs, DT_ID, &tmp); - if (tmp != DT3155_ID) - return -ENODEV; - - /* initialize AD LUT */ - write_i2c_reg(pd->regs, AD_ADDR, 0); - for (i = 0; i < 256; i++) - write_i2c_reg(pd->regs, AD_LUT, i); - - /* initialize ADC references */ - /* FIXME: pos_ref & neg_ref depend on VT_50HZ */ - write_i2c_reg(pd->regs, AD_ADDR, AD_CMD_REG); - write_i2c_reg(pd->regs, AD_CMD, VIDEO_CNL_1 | SYNC_CNL_1 | SYNC_LVL_3); - write_i2c_reg(pd->regs, AD_ADDR, AD_POS_REF); - write_i2c_reg(pd->regs, AD_CMD, 34); - write_i2c_reg(pd->regs, AD_ADDR, AD_NEG_REF); - write_i2c_reg(pd->regs, AD_CMD, 0); - - /* initialize PM LUT */ - write_i2c_reg(pd->regs, CONFIG, pd->config | PM_LUT_PGM); - for (i = 0; i < 256; i++) { - write_i2c_reg(pd->regs, PM_LUT_ADDR, i); - write_i2c_reg(pd->regs, PM_LUT_DATA, i); - } - write_i2c_reg(pd->regs, CONFIG, pd->config | PM_LUT_PGM | PM_LUT_SEL); - for (i = 0; i < 256; i++) { - write_i2c_reg(pd->regs, PM_LUT_ADDR, i); - write_i2c_reg(pd->regs, PM_LUT_DATA, i); - } - write_i2c_reg(pd->regs, CONFIG, pd->config); /* ACQ_MODE_EVEN */ - - /* select chanel 1 for input and set sync level */ - write_i2c_reg(pd->regs, AD_ADDR, AD_CMD_REG); - write_i2c_reg(pd->regs, AD_CMD, VIDEO_CNL_1 | SYNC_CNL_1 | SYNC_LVL_3); - - /* allocate memory, and initialize the DMA machine */ - buf_cpu = dma_alloc_coherent(&dev->dev, DT3155_BUF_SIZE, &buf_dma, - GFP_KERNEL); - if (!buf_cpu) { - printk(KERN_ERR "dt3155: dma_alloc_coherent " - "(in dt3155_init_board) failed\n"); - return -ENOMEM; - } - iowrite32(buf_dma, pd->regs + EVEN_DMA_START); - iowrite32(buf_dma, pd->regs + ODD_DMA_START); - iowrite32(0, pd->regs + EVEN_DMA_STRIDE); - iowrite32(0, pd->regs + ODD_DMA_STRIDE); - - /* Perform a pseudo even field acquire */ - iowrite32(FIFO_EN | SRST | CAP_CONT_ODD, pd->regs + CSR1); - write_i2c_reg(pd->regs, CSR2, pd->csr2 | SYNC_SNTL); - write_i2c_reg(pd->regs, CONFIG, pd->config); - write_i2c_reg(pd->regs, EVEN_CSR, CSR_SNGL); - write_i2c_reg(pd->regs, CSR2, pd->csr2 | BUSY_EVEN | SYNC_SNTL); - msleep(100); - read_i2c_reg(pd->regs, CSR2, &tmp); - write_i2c_reg(pd->regs, EVEN_CSR, CSR_ERROR | CSR_SNGL | CSR_DONE); - write_i2c_reg(pd->regs, ODD_CSR, CSR_ERROR | CSR_SNGL | CSR_DONE); - write_i2c_reg(pd->regs, CSR2, pd->csr2); - iowrite32(FIFO_EN | SRST | FLD_DN_EVEN | FLD_DN_ODD, pd->regs + CSR1); - - /* deallocate memory */ - dma_free_coherent(&dev->dev, DT3155_BUF_SIZE, buf_cpu, buf_dma); - if (tmp & BUSY_EVEN) { - printk(KERN_ERR "dt3155: BUSY_EVEN not cleared\n"); - return -EIO; - } - return 0; -} - -static struct video_device dt3155_vdev = { - .name = DT3155_NAME, - .fops = &dt3155_fops, - .ioctl_ops = &dt3155_ioctl_ops, - .minor = -1, - .release = video_device_release, - .tvnorms = DT3155_CURRENT_NORM, - .current_norm = DT3155_CURRENT_NORM, -}; - -/* same as in drivers/base/dma-coherent.c */ -struct dma_coherent_mem { - void *virt_base; - u32 device_base; - int size; - int flags; - unsigned long *bitmap; -}; - -static int __devinit -dt3155_alloc_coherent(struct device *dev, size_t size, int flags) -{ - struct dma_coherent_mem *mem; - dma_addr_t dev_base; - int pages = size >> PAGE_SHIFT; - int bitmap_size = BITS_TO_LONGS(pages) * sizeof(long); - - if ((flags & DMA_MEMORY_MAP) == 0) - goto out; - if (!size) - goto out; - if (dev->dma_mem) - goto out; - - mem = kzalloc(sizeof(*mem), GFP_KERNEL); - if (!mem) - goto out; - mem->virt_base = dma_alloc_coherent(dev, size, &dev_base, - DT3155_COH_FLAGS); - if (!mem->virt_base) - goto err_alloc_coherent; - mem->bitmap = kzalloc(bitmap_size, GFP_KERNEL); - if (!mem->bitmap) - goto err_bitmap; - - /* coherent_dma_mask is already set to 32 bits */ - mem->device_base = dev_base; - mem->size = pages; - mem->flags = flags; - dev->dma_mem = mem; - return DMA_MEMORY_MAP; - -err_bitmap: - dma_free_coherent(dev, size, mem->virt_base, dev_base); -err_alloc_coherent: - kfree(mem); -out: - return 0; -} - -static void __devexit -dt3155_free_coherent(struct device *dev) -{ - struct dma_coherent_mem *mem = dev->dma_mem; - - if (!mem) - return; - dev->dma_mem = NULL; - dma_free_coherent(dev, mem->size << PAGE_SHIFT, - mem->virt_base, mem->device_base); - kfree(mem->bitmap); - kfree(mem); -} - -static int __devinit -dt3155_probe(struct pci_dev *dev, const struct pci_device_id *id) -{ - int err; - struct dt3155_priv *pd; - - printk(KERN_INFO "dt3155: probe()\n"); - err = dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); - if (err) { - printk(KERN_ERR "dt3155: cannot set dma_mask\n"); - return -ENODEV; - } - err = dma_set_coherent_mask(&dev->dev, DMA_BIT_MASK(32)); - if (err) { - printk(KERN_ERR "dt3155: cannot set dma_coherent_mask\n"); - return -ENODEV; - } - pd = kzalloc(sizeof(*pd), GFP_KERNEL); - if (!pd) { - printk(KERN_ERR "dt3155: cannot allocate dt3155_priv\n"); - return -ENOMEM; - } - pd->vdev = video_device_alloc(); - if (!pd->vdev) { - printk(KERN_ERR "dt3155: cannot allocate vdev structure\n"); - goto err_video_device_alloc; - } - *pd->vdev = dt3155_vdev; - pci_set_drvdata(dev, pd); /* for use in dt3155_remove() */ - video_set_drvdata(pd->vdev, pd); /* for use in video_fops */ - pd->users = 0; - pd->acq_fp = NULL; - pd->pdev = dev; - INIT_LIST_HEAD(&pd->dmaq); - init_waitqueue_head(&pd->do_dma); - mutex_init(&pd->mux); - pd->csr2 = csr2_init; - pd->config = config_init; - err = pci_enable_device(pd->pdev); - if (err) { - printk(KERN_ERR "dt3155: pci_dev not enabled\n"); - goto err_enable_dev; - } - err = pci_request_region(pd->pdev, 0, pci_name(pd->pdev)); - if (err) - goto err_req_region; - pd->regs = pci_iomap(pd->pdev, 0, pci_resource_len(pd->pdev, 0)); - if (!pd->regs) { - err = -ENOMEM; - printk(KERN_ERR "dt3155: pci_iomap failed\n"); - goto err_pci_iomap; - } - err = dt3155_init_board(pd->pdev); - if (err) { - printk(KERN_ERR "dt3155: dt3155_init_board failed\n"); - goto err_init_board; - } - err = video_register_device(pd->vdev, VFL_TYPE_GRABBER, -1); - if (err) { - printk(KERN_ERR "dt3155: Cannot register video device\n"); - goto err_init_board; - } - err = dt3155_alloc_coherent(&dev->dev, DT3155_CHUNK_SIZE, - DMA_MEMORY_MAP); - if (err) - printk(KERN_INFO "dt3155: preallocated 8 buffers\n"); - printk(KERN_INFO "dt3155: /dev/video%i is ready\n", pd->vdev->minor); - return 0; /* success */ - -err_init_board: - pci_iounmap(pd->pdev, pd->regs); -err_pci_iomap: - pci_release_region(pd->pdev, 0); -err_req_region: - pci_disable_device(pd->pdev); -err_enable_dev: - video_device_release(pd->vdev); -err_video_device_alloc: - kfree(pd); - return err; -} - -static void __devexit -dt3155_remove(struct pci_dev *dev) -{ - struct dt3155_priv *pd = pci_get_drvdata(dev); - - printk(KERN_INFO "dt3155: remove()\n"); - dt3155_free_coherent(&dev->dev); - video_unregister_device(pd->vdev); - pci_iounmap(dev, pd->regs); - pci_release_region(pd->pdev, 0); - pci_disable_device(pd->pdev); - /* - * video_device_release() is invoked automatically - * see: struct video_device dt3155_vdev - */ - kfree(pd); -} - -static DEFINE_PCI_DEVICE_TABLE(pci_ids) = { - { PCI_DEVICE(DT3155_VENDOR_ID, DT3155_DEVICE_ID) }, - { 0, /* zero marks the end */ }, -}; -MODULE_DEVICE_TABLE(pci, pci_ids); - -static struct pci_driver pci_driver = { - .name = DT3155_NAME, - .id_table = pci_ids, - .probe = dt3155_probe, - .remove = __devexit_p(dt3155_remove), -}; - -static int __init -dt3155_init_module(void) -{ - int err; - - printk(KERN_INFO "dt3155: ==================\n"); - printk(KERN_INFO "dt3155: init()\n"); - err = pci_register_driver(&pci_driver); - if (err) { - printk(KERN_ERR "dt3155: cannot register pci_driver\n"); - return err; - } - return 0; /* succes */ -} - -static void __exit -dt3155_exit_module(void) -{ - pci_unregister_driver(&pci_driver); - printk(KERN_INFO "dt3155: exit()\n"); - printk(KERN_INFO "dt3155: ==================\n"); -} - -module_init(dt3155_init_module); -module_exit(dt3155_exit_module); - -MODULE_DESCRIPTION("video4linux pci-driver for dt3155 frame grabber"); -MODULE_AUTHOR("Marin Mitov <mitov@issp.bas.bg>"); -MODULE_VERSION(DT3155_VERSION); -MODULE_LICENSE("GPL"); |