02b20b0b4c
GIT_BRANCH=devel GIT_AUTHOR_DATE=1252851239 GIT_AUTHOR_NAME=Palash Bandyopadhyay GIT_AUTHOR_EMAIL=Palash.Bandyopadhyay@conexant.com Add conexant cx25821 driver release v106 of the Athena driver. Signed-off-by: Palash Bandyopadhyay <palash.bandyopadhyay@conexant.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
456 lines
13 KiB
C
456 lines
13 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 = 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_CH06];
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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, 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, &dev->sram_channels[SRAM_CH06]);
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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, "[%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 = 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, "[%p/%d] buffer_queue - append to active, buf->count=%d\n", 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, buf->vb.i);
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}
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}
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if (list_empty(&q->active))
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{
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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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{
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h = list_entry(list, struct cx25821_dev, devlist);
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if (h->video_dev[SRAM_CH06] && h->video_dev[SRAM_CH06]->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_CH06;
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pix_format = (dev->pixel_formats[dev->channel_opened] == 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),
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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, 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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{
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case V4L2_BUF_TYPE_VIDEO_CAPTURE:
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if (res_locked(fh->dev, RESOURCE_VIDEO6))
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return -EBUSY;
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return videobuf_read_one(&fh->vidq, data, count, ppos, 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, 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_VIDEO6)) {
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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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{
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if( buf->vb.state == VIDEOBUF_DONE )
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{
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struct cx25821_dev *dev = fh->dev;
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if( dev && dev->use_cif_resolution[SRAM_CH06] )
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{
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u8 cam_id = *((char*)buf->vb.baddr+3);
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memcpy((char*)buf->vb.baddr, (char*)buf->vb.baddr + (fh->width * 2), (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(channel6->dma_ctl, 0); /* FIFO and RISC disable */
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/* stop video capture */
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if (res_check(fh, RESOURCE_VIDEO6)) {
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videobuf_queue_cancel(&fh->vidq);
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res_free(dev, fh, RESOURCE_VIDEO6);
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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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{
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return -EINVAL;
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}
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if (unlikely(i != fh->type))
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{
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return -EINVAL;
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}
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if (unlikely(!res_get(dev, fh, get_resource(fh, RESOURCE_VIDEO6))))
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{
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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_VIDEO6);
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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, 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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{
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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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{
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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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{
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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_CH06, 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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{
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dev->use_cif_resolution[SRAM_CH06] = 1;
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}else
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{
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dev->use_cif_resolution[SRAM_CH06] = 0;
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}
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dev->cif_width[SRAM_CH06] = fh->width;
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medusa_set_resolution( dev, fh->width, SRAM_CH06 );
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dprintk(2, "%s() width=%d height=%d field=%d\n", __func__, fh->width, 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_CH06].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_CH06];
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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 6 is %s\n", (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_CH06);
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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_template6 = {
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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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