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![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
The original driver were generated with some dos editor, and used their own coding style. This patch does some automatic CodingStyle fixes, by running dos2unix and Lindent tools. More work still needs to be done for it to use upstream CodingStyle. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
452 lines
12 KiB
C
452 lines
12 KiB
C
/*
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* Driver for the Conexant CX25821 PCIe bridge
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*
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* Copyright (C) 2009 Conexant Systems Inc.
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* Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
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* Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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*
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "cx25821-video.h"
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static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
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{
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struct cx25821_buffer *buf =
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container_of(vb, struct cx25821_buffer, vb);
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struct cx25821_buffer *prev;
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struct cx25821_fh *fh = vq->priv_data;
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struct cx25821_dev *dev = fh->dev;
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struct cx25821_dmaqueue *q = &dev->vidq[SRAM_CH02];
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/* add jump to stopper */
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buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
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buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
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buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
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dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]);
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if (!list_empty(&q->queued)) {
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list_add_tail(&buf->vb.queue, &q->queued);
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buf->vb.state = VIDEOBUF_QUEUED;
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dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf,
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buf->vb.i);
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} else if (list_empty(&q->active)) {
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list_add_tail(&buf->vb.queue, &q->active);
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cx25821_start_video_dma(dev, q, buf,
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&dev->sram_channels[SRAM_CH02]);
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buf->vb.state = VIDEOBUF_ACTIVE;
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buf->count = q->count++;
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mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT);
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dprintk(2,
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"[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n",
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buf, buf->vb.i, buf->count, q->count);
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} else {
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prev =
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list_entry(q->active.prev, struct cx25821_buffer, vb.queue);
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if (prev->vb.width == buf->vb.width
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&& prev->vb.height == buf->vb.height
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&& prev->fmt == buf->fmt) {
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list_add_tail(&buf->vb.queue, &q->active);
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buf->vb.state = VIDEOBUF_ACTIVE;
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buf->count = q->count++;
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prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
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/* 64 bit bits 63-32 */
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prev->risc.jmp[2] = cpu_to_le32(0);
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dprintk(2,
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"[%p/%d] buffer_queue - append to active, buf->count=%d\n",
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buf, buf->vb.i, buf->count);
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} else {
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list_add_tail(&buf->vb.queue, &q->queued);
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buf->vb.state = VIDEOBUF_QUEUED;
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dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf,
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buf->vb.i);
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}
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}
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if (list_empty(&q->active)) {
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dprintk(2, "active queue empty!\n");
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}
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}
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static struct videobuf_queue_ops cx25821_video_qops = {
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.buf_setup = buffer_setup,
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.buf_prepare = buffer_prepare,
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.buf_queue = buffer_queue,
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.buf_release = buffer_release,
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};
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static int video_open(struct file *file)
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{
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int minor = video_devdata(file)->minor;
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struct cx25821_dev *h, *dev = NULL;
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struct cx25821_fh *fh;
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struct list_head *list;
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enum v4l2_buf_type type = 0;
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u32 pix_format;
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lock_kernel();
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list_for_each(list, &cx25821_devlist) {
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h = list_entry(list, struct cx25821_dev, devlist);
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if (h->video_dev[SRAM_CH02]
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&& h->video_dev[SRAM_CH02]->minor == minor) {
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dev = h;
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type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
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}
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}
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if (NULL == dev) {
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unlock_kernel();
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return -ENODEV;
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}
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printk("open minor=%d type=%s\n", minor, v4l2_type_names[type]);
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/* allocate + initialize per filehandle data */
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fh = kzalloc(sizeof(*fh), GFP_KERNEL);
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if (NULL == fh) {
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unlock_kernel();
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return -ENOMEM;
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}
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file->private_data = fh;
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fh->dev = dev;
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fh->type = type;
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fh->width = 720;
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if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK)
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fh->height = 576;
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else
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fh->height = 480;
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dev->channel_opened = SRAM_CH02;
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pix_format =
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(dev->pixel_formats[dev->channel_opened] ==
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PIXEL_FRMT_411) ? V4L2_PIX_FMT_Y41P : V4L2_PIX_FMT_YUYV;
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fh->fmt = format_by_fourcc(pix_format);
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v4l2_prio_open(&dev->prio, &fh->prio);
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videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops,
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&dev->pci->dev, &dev->slock,
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V4L2_BUF_TYPE_VIDEO_CAPTURE,
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V4L2_FIELD_INTERLACED,
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sizeof(struct cx25821_buffer), fh);
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dprintk(1, "post videobuf_queue_init()\n");
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unlock_kernel();
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return 0;
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}
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static ssize_t video_read(struct file *file, char __user * data, size_t count,
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loff_t * ppos)
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{
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struct cx25821_fh *fh = file->private_data;
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switch (fh->type) {
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case V4L2_BUF_TYPE_VIDEO_CAPTURE:
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if (res_locked(fh->dev, RESOURCE_VIDEO2))
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return -EBUSY;
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return videobuf_read_one(&fh->vidq, data, count, ppos,
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file->f_flags & O_NONBLOCK);
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default:
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BUG();
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return 0;
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}
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}
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static unsigned int video_poll(struct file *file,
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struct poll_table_struct *wait)
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{
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struct cx25821_fh *fh = file->private_data;
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struct cx25821_buffer *buf;
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if (res_check(fh, RESOURCE_VIDEO2)) {
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/* streaming capture */
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if (list_empty(&fh->vidq.stream))
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return POLLERR;
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buf = list_entry(fh->vidq.stream.next,
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struct cx25821_buffer, vb.stream);
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} else {
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/* read() capture */
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buf = (struct cx25821_buffer *)fh->vidq.read_buf;
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if (NULL == buf)
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return POLLERR;
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}
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poll_wait(file, &buf->vb.done, wait);
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if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR) {
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if (buf->vb.state == VIDEOBUF_DONE) {
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struct cx25821_dev *dev = fh->dev;
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if (dev && dev->use_cif_resolution[SRAM_CH02]) {
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u8 cam_id = *((char *)buf->vb.baddr + 3);
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memcpy((char *)buf->vb.baddr,
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(char *)buf->vb.baddr + (fh->width * 2),
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(fh->width * 2));
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*((char *)buf->vb.baddr + 3) = cam_id;
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}
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}
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return POLLIN | POLLRDNORM;
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}
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return 0;
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}
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static int video_release(struct file *file)
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{
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struct cx25821_fh *fh = file->private_data;
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struct cx25821_dev *dev = fh->dev;
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//stop the risc engine and fifo
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cx_write(channel2->dma_ctl, 0); /* FIFO and RISC disable */
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/* stop video capture */
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if (res_check(fh, RESOURCE_VIDEO2)) {
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videobuf_queue_cancel(&fh->vidq);
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res_free(dev, fh, RESOURCE_VIDEO2);
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}
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if (fh->vidq.read_buf) {
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buffer_release(&fh->vidq, fh->vidq.read_buf);
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kfree(fh->vidq.read_buf);
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}
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videobuf_mmap_free(&fh->vidq);
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v4l2_prio_close(&dev->prio, &fh->prio);
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file->private_data = NULL;
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kfree(fh);
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return 0;
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}
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static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
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{
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struct cx25821_fh *fh = priv;
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struct cx25821_dev *dev = fh->dev;
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if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)) {
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return -EINVAL;
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}
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if (unlikely(i != fh->type)) {
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return -EINVAL;
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}
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if (unlikely(!res_get(dev, fh, get_resource(fh, RESOURCE_VIDEO2)))) {
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return -EBUSY;
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}
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return videobuf_streamon(get_queue(fh));
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}
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static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
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{
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struct cx25821_fh *fh = priv;
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struct cx25821_dev *dev = fh->dev;
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int err, res;
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if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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if (i != fh->type)
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return -EINVAL;
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res = get_resource(fh, RESOURCE_VIDEO2);
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err = videobuf_streamoff(get_queue(fh));
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if (err < 0)
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return err;
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res_free(dev, fh, res);
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return 0;
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}
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static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct cx25821_fh *fh = priv;
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struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
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int err;
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int pix_format = 0;
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if (fh) {
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err = v4l2_prio_check(&dev->prio, &fh->prio);
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if (0 != err)
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return err;
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}
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dprintk(2, "%s()\n", __func__);
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err = vidioc_try_fmt_vid_cap(file, priv, f);
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if (0 != err)
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return err;
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fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
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fh->vidq.field = f->fmt.pix.field;
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// check if width and height is valid based on set standard
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if (is_valid_width(f->fmt.pix.width, dev->tvnorm)) {
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fh->width = f->fmt.pix.width;
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}
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if (is_valid_height(f->fmt.pix.height, dev->tvnorm)) {
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fh->height = f->fmt.pix.height;
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}
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if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P)
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pix_format = PIXEL_FRMT_411;
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else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV)
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pix_format = PIXEL_FRMT_422;
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else
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return -EINVAL;
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cx25821_set_pixel_format(dev, SRAM_CH02, pix_format);
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// check if cif resolution
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if (fh->width == 320 || fh->width == 352) {
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dev->use_cif_resolution[SRAM_CH02] = 1;
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} else {
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dev->use_cif_resolution[SRAM_CH02] = 0;
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}
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dev->cif_width[SRAM_CH02] = fh->width;
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medusa_set_resolution(dev, fh->width, SRAM_CH02);
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dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width,
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fh->height, fh->vidq.field);
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cx25821_call_all(dev, video, s_fmt, f);
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return 0;
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}
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static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
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{
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int ret_val = 0;
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struct cx25821_fh *fh = priv;
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struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
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ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK);
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p->sequence = dev->vidq[SRAM_CH02].count;
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return ret_val;
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}
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static int vidioc_log_status(struct file *file, void *priv)
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{
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struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
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char name[32 + 2];
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struct sram_channel *sram_ch = &dev->sram_channels[SRAM_CH02];
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u32 tmp = 0;
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snprintf(name, sizeof(name), "%s/2", dev->name);
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printk(KERN_INFO "%s/2: ============ START LOG STATUS ============\n",
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dev->name);
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cx25821_call_all(dev, core, log_status);
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tmp = cx_read(sram_ch->dma_ctl);
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printk(KERN_INFO "Video input 2 is %s\n",
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(tmp & 0x11) ? "streaming" : "stopped");
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printk(KERN_INFO "%s/2: ============= END LOG STATUS =============\n",
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dev->name);
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return 0;
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}
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static int vidioc_s_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctl)
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{
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struct cx25821_fh *fh = priv;
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struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev;
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int err;
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if (fh) {
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err = v4l2_prio_check(&dev->prio, &fh->prio);
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if (0 != err)
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return err;
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}
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return cx25821_set_control(dev, ctl, SRAM_CH02);
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}
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// exported stuff
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static const struct v4l2_file_operations video_fops = {
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.owner = THIS_MODULE,
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.open = video_open,
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.release = video_release,
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.read = video_read,
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.poll = video_poll,
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.mmap = video_mmap,
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.ioctl = video_ioctl2,
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};
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static const struct v4l2_ioctl_ops video_ioctl_ops = {
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.vidioc_querycap = vidioc_querycap,
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.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
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.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
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.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
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.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
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.vidioc_reqbufs = vidioc_reqbufs,
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.vidioc_querybuf = vidioc_querybuf,
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.vidioc_qbuf = vidioc_qbuf,
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.vidioc_dqbuf = vidioc_dqbuf,
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#ifdef TUNER_FLAG
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.vidioc_s_std = vidioc_s_std,
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.vidioc_querystd = vidioc_querystd,
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#endif
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.vidioc_cropcap = vidioc_cropcap,
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.vidioc_s_crop = vidioc_s_crop,
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.vidioc_g_crop = vidioc_g_crop,
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.vidioc_enum_input = vidioc_enum_input,
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.vidioc_g_input = vidioc_g_input,
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.vidioc_s_input = vidioc_s_input,
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.vidioc_g_ctrl = vidioc_g_ctrl,
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.vidioc_s_ctrl = vidioc_s_ctrl,
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.vidioc_queryctrl = vidioc_queryctrl,
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.vidioc_streamon = vidioc_streamon,
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.vidioc_streamoff = vidioc_streamoff,
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.vidioc_log_status = vidioc_log_status,
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.vidioc_g_priority = vidioc_g_priority,
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.vidioc_s_priority = vidioc_s_priority,
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#ifdef CONFIG_VIDEO_V4L1_COMPAT
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.vidiocgmbuf = vidiocgmbuf,
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#endif
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#ifdef TUNER_FLAG
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.vidioc_g_tuner = vidioc_g_tuner,
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.vidioc_s_tuner = vidioc_s_tuner,
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.vidioc_g_frequency = vidioc_g_frequency,
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.vidioc_s_frequency = vidioc_s_frequency,
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#endif
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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.vidioc_g_register = vidioc_g_register,
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.vidioc_s_register = vidioc_s_register,
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#endif
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};
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struct video_device cx25821_video_template2 = {
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.name = "cx25821-video",
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.fops = &video_fops,
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.minor = -1,
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.ioctl_ops = &video_ioctl_ops,
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.tvnorms = CX25821_NORMS,
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.current_norm = V4L2_STD_NTSC_M,
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};
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