// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for the NXP SAA7164 PCIe bridge
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*
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* Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
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*/
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#include "saa7164.h"
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|
#define ENCODER_MAX_BITRATE 6500000
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#define ENCODER_MIN_BITRATE 1000000
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#define ENCODER_DEF_BITRATE 5000000
|
|
/*
|
* This is a dummy non-zero value for the sizeimage field of v4l2_pix_format.
|
* It is not actually used for anything since this driver does not support
|
* stream I/O, only read(), and because this driver produces an MPEG stream
|
* and not discrete frames. But the V4L2 spec doesn't allow for this value
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* to be 0, so set it to 0x10000 instead.
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*
|
* If we ever change this driver to support stream I/O, then this field
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* will be the size of the streaming buffers.
|
*/
|
#define SAA7164_SIZEIMAGE (0x10000)
|
|
static struct saa7164_tvnorm saa7164_tvnorms[] = {
|
{
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.name = "NTSC-M",
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.id = V4L2_STD_NTSC_M,
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}, {
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.name = "NTSC-JP",
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.id = V4L2_STD_NTSC_M_JP,
|
}
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};
|
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/* Take the encoder configuration form the port struct and
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* flush it to the hardware.
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*/
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static void saa7164_encoder_configure(struct saa7164_port *port)
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{
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struct saa7164_dev *dev = port->dev;
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dprintk(DBGLVL_ENC, "%s()\n", __func__);
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port->encoder_params.width = port->width;
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port->encoder_params.height = port->height;
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port->encoder_params.is_50hz =
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(port->encodernorm.id & V4L2_STD_625_50) != 0;
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/* Set up the DIF (enable it) for analog mode by default */
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saa7164_api_initialize_dif(port);
|
|
/* Configure the correct video standard */
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saa7164_api_configure_dif(port, port->encodernorm.id);
|
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/* Ensure the audio decoder is correct configured */
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saa7164_api_set_audio_std(port);
|
}
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static int saa7164_encoder_buffers_dealloc(struct saa7164_port *port)
|
{
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struct list_head *c, *n, *p, *q, *l, *v;
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struct saa7164_dev *dev = port->dev;
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struct saa7164_buffer *buf;
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struct saa7164_user_buffer *ubuf;
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/* Remove any allocated buffers */
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mutex_lock(&port->dmaqueue_lock);
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dprintk(DBGLVL_ENC, "%s(port=%d) dmaqueue\n", __func__, port->nr);
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list_for_each_safe(c, n, &port->dmaqueue.list) {
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buf = list_entry(c, struct saa7164_buffer, list);
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list_del(c);
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saa7164_buffer_dealloc(buf);
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}
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dprintk(DBGLVL_ENC, "%s(port=%d) used\n", __func__, port->nr);
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list_for_each_safe(p, q, &port->list_buf_used.list) {
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ubuf = list_entry(p, struct saa7164_user_buffer, list);
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list_del(p);
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saa7164_buffer_dealloc_user(ubuf);
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}
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dprintk(DBGLVL_ENC, "%s(port=%d) free\n", __func__, port->nr);
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list_for_each_safe(l, v, &port->list_buf_free.list) {
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ubuf = list_entry(l, struct saa7164_user_buffer, list);
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list_del(l);
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saa7164_buffer_dealloc_user(ubuf);
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}
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mutex_unlock(&port->dmaqueue_lock);
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dprintk(DBGLVL_ENC, "%s(port=%d) done\n", __func__, port->nr);
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return 0;
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}
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/* Dynamic buffer switch at encoder start time */
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static int saa7164_encoder_buffers_alloc(struct saa7164_port *port)
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{
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struct saa7164_dev *dev = port->dev;
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struct saa7164_buffer *buf;
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struct saa7164_user_buffer *ubuf;
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struct tmHWStreamParameters *params = &port->hw_streamingparams;
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int result = -ENODEV, i;
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int len = 0;
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dprintk(DBGLVL_ENC, "%s()\n", __func__);
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if (port->encoder_params.stream_type ==
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V4L2_MPEG_STREAM_TYPE_MPEG2_PS) {
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dprintk(DBGLVL_ENC,
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"%s() type=V4L2_MPEG_STREAM_TYPE_MPEG2_PS\n",
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__func__);
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params->samplesperline = 128;
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params->numberoflines = 256;
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params->pitch = 128;
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params->numpagetables = 2 +
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((SAA7164_PS_NUMBER_OF_LINES * 128) / PAGE_SIZE);
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} else
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if (port->encoder_params.stream_type ==
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V4L2_MPEG_STREAM_TYPE_MPEG2_TS) {
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dprintk(DBGLVL_ENC,
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"%s() type=V4L2_MPEG_STREAM_TYPE_MPEG2_TS\n",
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__func__);
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params->samplesperline = 188;
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params->numberoflines = 312;
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params->pitch = 188;
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params->numpagetables = 2 +
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((SAA7164_TS_NUMBER_OF_LINES * 188) / PAGE_SIZE);
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} else
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BUG();
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/* Init and establish defaults */
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params->bitspersample = 8;
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params->linethreshold = 0;
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params->pagetablelistvirt = NULL;
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params->pagetablelistphys = NULL;
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params->numpagetableentries = port->hwcfg.buffercount;
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/* Allocate the PCI resources, buffers (hard) */
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for (i = 0; i < port->hwcfg.buffercount; i++) {
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buf = saa7164_buffer_alloc(port,
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params->numberoflines *
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params->pitch);
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if (!buf) {
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printk(KERN_ERR "%s() failed (errno = %d), unable to allocate buffer\n",
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__func__, result);
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result = -ENOMEM;
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goto failed;
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} else {
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mutex_lock(&port->dmaqueue_lock);
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list_add_tail(&buf->list, &port->dmaqueue.list);
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mutex_unlock(&port->dmaqueue_lock);
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}
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}
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/* Allocate some kernel buffers for copying
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* to userpsace.
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*/
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len = params->numberoflines * params->pitch;
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if (encoder_buffers < 16)
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encoder_buffers = 16;
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if (encoder_buffers > 512)
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encoder_buffers = 512;
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for (i = 0; i < encoder_buffers; i++) {
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ubuf = saa7164_buffer_alloc_user(dev, len);
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if (ubuf) {
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mutex_lock(&port->dmaqueue_lock);
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list_add_tail(&ubuf->list, &port->list_buf_free.list);
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mutex_unlock(&port->dmaqueue_lock);
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}
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}
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result = 0;
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failed:
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return result;
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}
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static int saa7164_encoder_initialize(struct saa7164_port *port)
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{
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saa7164_encoder_configure(port);
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return 0;
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}
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/* -- V4L2 --------------------------------------------------------- */
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int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id)
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{
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struct saa7164_dev *dev = port->dev;
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unsigned int i;
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dprintk(DBGLVL_ENC, "%s(id=0x%x)\n", __func__, (u32)id);
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for (i = 0; i < ARRAY_SIZE(saa7164_tvnorms); i++) {
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if (id & saa7164_tvnorms[i].id)
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break;
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}
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if (i == ARRAY_SIZE(saa7164_tvnorms))
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return -EINVAL;
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port->encodernorm = saa7164_tvnorms[i];
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port->std = id;
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/* Update the audio decoder while is not running in
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* auto detect mode.
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*/
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saa7164_api_set_audio_std(port);
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dprintk(DBGLVL_ENC, "%s(id=0x%x) OK\n", __func__, (u32)id);
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return 0;
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}
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static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
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{
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struct saa7164_encoder_fh *fh = file->private_data;
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return saa7164_s_std(fh->port, id);
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}
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int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id)
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{
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*id = port->std;
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return 0;
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}
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static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
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{
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struct saa7164_encoder_fh *fh = file->private_data;
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return saa7164_g_std(fh->port, id);
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}
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int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i)
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{
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static const char * const inputs[] = {
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"tuner", "composite", "svideo", "aux",
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"composite 2", "svideo 2", "aux 2"
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};
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int n;
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if (i->index >= 7)
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return -EINVAL;
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strscpy(i->name, inputs[i->index], sizeof(i->name));
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if (i->index == 0)
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i->type = V4L2_INPUT_TYPE_TUNER;
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else
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i->type = V4L2_INPUT_TYPE_CAMERA;
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for (n = 0; n < ARRAY_SIZE(saa7164_tvnorms); n++)
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i->std |= saa7164_tvnorms[n].id;
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return 0;
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}
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int saa7164_g_input(struct saa7164_port *port, unsigned int *i)
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{
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struct saa7164_dev *dev = port->dev;
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if (saa7164_api_get_videomux(port) != SAA_OK)
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return -EIO;
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*i = (port->mux_input - 1);
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dprintk(DBGLVL_ENC, "%s() input=%d\n", __func__, *i);
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return 0;
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}
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static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
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{
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struct saa7164_encoder_fh *fh = file->private_data;
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return saa7164_g_input(fh->port, i);
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}
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int saa7164_s_input(struct saa7164_port *port, unsigned int i)
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{
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struct saa7164_dev *dev = port->dev;
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dprintk(DBGLVL_ENC, "%s() input=%d\n", __func__, i);
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if (i >= 7)
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return -EINVAL;
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port->mux_input = i + 1;
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if (saa7164_api_set_videomux(port) != SAA_OK)
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return -EIO;
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return 0;
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}
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static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
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{
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struct saa7164_encoder_fh *fh = file->private_data;
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return saa7164_s_input(fh->port, i);
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}
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int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)
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{
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struct saa7164_encoder_fh *fh = file->private_data;
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struct saa7164_port *port = fh->port;
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struct saa7164_dev *dev = port->dev;
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if (0 != t->index)
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return -EINVAL;
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strscpy(t->name, "tuner", sizeof(t->name));
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t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
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t->rangelow = SAA7164_TV_MIN_FREQ;
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t->rangehigh = SAA7164_TV_MAX_FREQ;
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dprintk(DBGLVL_ENC, "VIDIOC_G_TUNER: tuner type %d\n", t->type);
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return 0;
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}
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int saa7164_s_tuner(struct file *file, void *priv,
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const struct v4l2_tuner *t)
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{
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if (0 != t->index)
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return -EINVAL;
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/* Update the A/V core */
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return 0;
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}
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int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f)
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{
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if (f->tuner)
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return -EINVAL;
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f->frequency = port->freq;
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return 0;
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}
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static int vidioc_g_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
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struct saa7164_encoder_fh *fh = file->private_data;
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return saa7164_g_frequency(fh->port, f);
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}
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int saa7164_s_frequency(struct saa7164_port *port,
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const struct v4l2_frequency *f)
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{
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struct saa7164_dev *dev = port->dev;
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struct saa7164_port *tsport;
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struct dvb_frontend *fe;
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/* TODO: Pull this for the std */
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struct analog_parameters params = {
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.mode = V4L2_TUNER_ANALOG_TV,
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.audmode = V4L2_TUNER_MODE_STEREO,
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.std = port->encodernorm.id,
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.frequency = f->frequency
|
};
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/* Stop the encoder */
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dprintk(DBGLVL_ENC, "%s() frequency=%d tuner=%d\n", __func__,
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f->frequency, f->tuner);
|
|
if (f->tuner != 0)
|
return -EINVAL;
|
|
port->freq = clamp(f->frequency,
|
SAA7164_TV_MIN_FREQ, SAA7164_TV_MAX_FREQ);
|
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/* Update the hardware */
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if (port->nr == SAA7164_PORT_ENC1)
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tsport = &dev->ports[SAA7164_PORT_TS1];
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else if (port->nr == SAA7164_PORT_ENC2)
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tsport = &dev->ports[SAA7164_PORT_TS2];
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else
|
BUG();
|
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fe = tsport->dvb.frontend;
|
|
if (fe && fe->ops.tuner_ops.set_analog_params)
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fe->ops.tuner_ops.set_analog_params(fe, ¶ms);
|
else
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printk(KERN_ERR "%s() No analog tuner, aborting\n", __func__);
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|
saa7164_encoder_initialize(port);
|
|
return 0;
|
}
|
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static int vidioc_s_frequency(struct file *file, void *priv,
|
const struct v4l2_frequency *f)
|
{
|
struct saa7164_encoder_fh *fh = file->private_data;
|
|
return saa7164_s_frequency(fh->port, f);
|
}
|
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static int saa7164_s_ctrl(struct v4l2_ctrl *ctrl)
|
{
|
struct saa7164_port *port =
|
container_of(ctrl->handler, struct saa7164_port, ctrl_handler);
|
struct saa7164_encoder_params *params = &port->encoder_params;
|
int ret = 0;
|
|
switch (ctrl->id) {
|
case V4L2_CID_BRIGHTNESS:
|
port->ctl_brightness = ctrl->val;
|
saa7164_api_set_usercontrol(port, PU_BRIGHTNESS_CONTROL);
|
break;
|
case V4L2_CID_CONTRAST:
|
port->ctl_contrast = ctrl->val;
|
saa7164_api_set_usercontrol(port, PU_CONTRAST_CONTROL);
|
break;
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case V4L2_CID_SATURATION:
|
port->ctl_saturation = ctrl->val;
|
saa7164_api_set_usercontrol(port, PU_SATURATION_CONTROL);
|
break;
|
case V4L2_CID_HUE:
|
port->ctl_hue = ctrl->val;
|
saa7164_api_set_usercontrol(port, PU_HUE_CONTROL);
|
break;
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case V4L2_CID_SHARPNESS:
|
port->ctl_sharpness = ctrl->val;
|
saa7164_api_set_usercontrol(port, PU_SHARPNESS_CONTROL);
|
break;
|
case V4L2_CID_AUDIO_VOLUME:
|
port->ctl_volume = ctrl->val;
|
saa7164_api_set_audio_volume(port, port->ctl_volume);
|
break;
|
case V4L2_CID_MPEG_VIDEO_BITRATE:
|
params->bitrate = ctrl->val;
|
break;
|
case V4L2_CID_MPEG_STREAM_TYPE:
|
params->stream_type = ctrl->val;
|
break;
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case V4L2_CID_MPEG_AUDIO_MUTE:
|
params->ctl_mute = ctrl->val;
|
ret = saa7164_api_audio_mute(port, params->ctl_mute);
|
if (ret != SAA_OK) {
|
printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__,
|
ret);
|
ret = -EIO;
|
}
|
break;
|
case V4L2_CID_MPEG_VIDEO_ASPECT:
|
params->ctl_aspect = ctrl->val;
|
ret = saa7164_api_set_aspect_ratio(port);
|
if (ret != SAA_OK) {
|
printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__,
|
ret);
|
ret = -EIO;
|
}
|
break;
|
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
|
params->bitrate_mode = ctrl->val;
|
break;
|
case V4L2_CID_MPEG_VIDEO_B_FRAMES:
|
params->refdist = ctrl->val;
|
break;
|
case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK:
|
params->bitrate_peak = ctrl->val;
|
break;
|
case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
|
params->gop_size = ctrl->val;
|
break;
|
default:
|
ret = -EINVAL;
|
}
|
|
return ret;
|
}
|
|
static int vidioc_querycap(struct file *file, void *priv,
|
struct v4l2_capability *cap)
|
{
|
struct saa7164_encoder_fh *fh = file->private_data;
|
struct saa7164_port *port = fh->port;
|
struct saa7164_dev *dev = port->dev;
|
|
strscpy(cap->driver, dev->name, sizeof(cap->driver));
|
strscpy(cap->card, saa7164_boards[dev->board].name,
|
sizeof(cap->card));
|
sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
|
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
|
V4L2_CAP_TUNER | V4L2_CAP_VBI_CAPTURE |
|
V4L2_CAP_DEVICE_CAPS;
|
return 0;
|
}
|
|
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_fmtdesc *f)
|
{
|
if (f->index != 0)
|
return -EINVAL;
|
|
f->pixelformat = V4L2_PIX_FMT_MPEG;
|
|
return 0;
|
}
|
|
static int vidioc_fmt_vid_cap(struct file *file, void *priv,
|
struct v4l2_format *f)
|
{
|
struct saa7164_encoder_fh *fh = file->private_data;
|
struct saa7164_port *port = fh->port;
|
|
f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
|
f->fmt.pix.bytesperline = 0;
|
f->fmt.pix.sizeimage = SAA7164_SIZEIMAGE;
|
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
|
f->fmt.pix.width = port->width;
|
f->fmt.pix.height = port->height;
|
return 0;
|
}
|
|
static int saa7164_encoder_stop_port(struct saa7164_port *port)
|
{
|
struct saa7164_dev *dev = port->dev;
|
int ret;
|
|
ret = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
|
if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
|
printk(KERN_ERR "%s() stop transition failed, ret = 0x%x\n",
|
__func__, ret);
|
ret = -EIO;
|
} else {
|
dprintk(DBGLVL_ENC, "%s() Stopped\n", __func__);
|
ret = 0;
|
}
|
|
return ret;
|
}
|
|
static int saa7164_encoder_acquire_port(struct saa7164_port *port)
|
{
|
struct saa7164_dev *dev = port->dev;
|
int ret;
|
|
ret = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
|
if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
|
printk(KERN_ERR "%s() acquire transition failed, ret = 0x%x\n",
|
__func__, ret);
|
ret = -EIO;
|
} else {
|
dprintk(DBGLVL_ENC, "%s() Acquired\n", __func__);
|
ret = 0;
|
}
|
|
return ret;
|
}
|
|
static int saa7164_encoder_pause_port(struct saa7164_port *port)
|
{
|
struct saa7164_dev *dev = port->dev;
|
int ret;
|
|
ret = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
|
if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
|
printk(KERN_ERR "%s() pause transition failed, ret = 0x%x\n",
|
__func__, ret);
|
ret = -EIO;
|
} else {
|
dprintk(DBGLVL_ENC, "%s() Paused\n", __func__);
|
ret = 0;
|
}
|
|
return ret;
|
}
|
|
/* Firmware is very windows centric, meaning you have to transition
|
* the part through AVStream / KS Windows stages, forwards or backwards.
|
* States are: stopped, acquired (h/w), paused, started.
|
* We have to leave here will all of the soft buffers on the free list,
|
* else the cfg_post() func won't have soft buffers to correctly configure.
|
*/
|
static int saa7164_encoder_stop_streaming(struct saa7164_port *port)
|
{
|
struct saa7164_dev *dev = port->dev;
|
struct saa7164_buffer *buf;
|
struct saa7164_user_buffer *ubuf;
|
struct list_head *c, *n;
|
int ret;
|
|
dprintk(DBGLVL_ENC, "%s(port=%d)\n", __func__, port->nr);
|
|
ret = saa7164_encoder_pause_port(port);
|
ret = saa7164_encoder_acquire_port(port);
|
ret = saa7164_encoder_stop_port(port);
|
|
dprintk(DBGLVL_ENC, "%s(port=%d) Hardware stopped\n", __func__,
|
port->nr);
|
|
/* Reset the state of any allocated buffer resources */
|
mutex_lock(&port->dmaqueue_lock);
|
|
/* Reset the hard and soft buffer state */
|
list_for_each_safe(c, n, &port->dmaqueue.list) {
|
buf = list_entry(c, struct saa7164_buffer, list);
|
buf->flags = SAA7164_BUFFER_FREE;
|
buf->pos = 0;
|
}
|
|
list_for_each_safe(c, n, &port->list_buf_used.list) {
|
ubuf = list_entry(c, struct saa7164_user_buffer, list);
|
ubuf->pos = 0;
|
list_move_tail(&ubuf->list, &port->list_buf_free.list);
|
}
|
|
mutex_unlock(&port->dmaqueue_lock);
|
|
/* Free any allocated resources */
|
saa7164_encoder_buffers_dealloc(port);
|
|
dprintk(DBGLVL_ENC, "%s(port=%d) Released\n", __func__, port->nr);
|
|
return ret;
|
}
|
|
static int saa7164_encoder_start_streaming(struct saa7164_port *port)
|
{
|
struct saa7164_dev *dev = port->dev;
|
int result, ret = 0;
|
|
dprintk(DBGLVL_ENC, "%s(port=%d)\n", __func__, port->nr);
|
|
port->done_first_interrupt = 0;
|
|
/* allocate all of the PCIe DMA buffer resources on the fly,
|
* allowing switching between TS and PS payloads without
|
* requiring a complete driver reload.
|
*/
|
saa7164_encoder_buffers_alloc(port);
|
|
/* Configure the encoder with any cache values */
|
saa7164_api_set_encoder(port);
|
saa7164_api_get_encoder(port);
|
|
/* Place the empty buffers on the hardware */
|
saa7164_buffer_cfg_port(port);
|
|
/* Acquire the hardware */
|
result = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
|
if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
|
printk(KERN_ERR "%s() acquire transition failed, res = 0x%x\n",
|
__func__, result);
|
|
/* Stop the hardware, regardless */
|
result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
|
if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
|
printk(KERN_ERR "%s() acquire/forced stop transition failed, res = 0x%x\n",
|
__func__, result);
|
}
|
ret = -EIO;
|
goto out;
|
} else
|
dprintk(DBGLVL_ENC, "%s() Acquired\n", __func__);
|
|
/* Pause the hardware */
|
result = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
|
if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
|
printk(KERN_ERR "%s() pause transition failed, res = 0x%x\n",
|
__func__, result);
|
|
/* Stop the hardware, regardless */
|
result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
|
if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
|
printk(KERN_ERR "%s() pause/forced stop transition failed, res = 0x%x\n",
|
__func__, result);
|
}
|
|
ret = -EIO;
|
goto out;
|
} else
|
dprintk(DBGLVL_ENC, "%s() Paused\n", __func__);
|
|
/* Start the hardware */
|
result = saa7164_api_transition_port(port, SAA_DMASTATE_RUN);
|
if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
|
printk(KERN_ERR "%s() run transition failed, result = 0x%x\n",
|
__func__, result);
|
|
/* Stop the hardware, regardless */
|
result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
|
if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
|
printk(KERN_ERR "%s() run/forced stop transition failed, res = 0x%x\n",
|
__func__, result);
|
}
|
|
ret = -EIO;
|
} else
|
dprintk(DBGLVL_ENC, "%s() Running\n", __func__);
|
|
out:
|
return ret;
|
}
|
|
static int fops_open(struct file *file)
|
{
|
struct saa7164_dev *dev;
|
struct saa7164_port *port;
|
struct saa7164_encoder_fh *fh;
|
|
port = (struct saa7164_port *)video_get_drvdata(video_devdata(file));
|
if (!port)
|
return -ENODEV;
|
|
dev = port->dev;
|
|
dprintk(DBGLVL_ENC, "%s()\n", __func__);
|
|
/* allocate + initialize per filehandle data */
|
fh = kzalloc(sizeof(*fh), GFP_KERNEL);
|
if (NULL == fh)
|
return -ENOMEM;
|
|
fh->port = port;
|
v4l2_fh_init(&fh->fh, video_devdata(file));
|
v4l2_fh_add(&fh->fh);
|
file->private_data = fh;
|
|
return 0;
|
}
|
|
static int fops_release(struct file *file)
|
{
|
struct saa7164_encoder_fh *fh = file->private_data;
|
struct saa7164_port *port = fh->port;
|
struct saa7164_dev *dev = port->dev;
|
|
dprintk(DBGLVL_ENC, "%s()\n", __func__);
|
|
/* Shut device down on last close */
|
if (atomic_cmpxchg(&fh->v4l_reading, 1, 0) == 1) {
|
if (atomic_dec_return(&port->v4l_reader_count) == 0) {
|
/* stop mpeg capture then cancel buffers */
|
saa7164_encoder_stop_streaming(port);
|
}
|
}
|
|
v4l2_fh_del(&fh->fh);
|
v4l2_fh_exit(&fh->fh);
|
kfree(fh);
|
|
return 0;
|
}
|
|
static struct
|
saa7164_user_buffer *saa7164_enc_next_buf(struct saa7164_port *port)
|
{
|
struct saa7164_user_buffer *ubuf = NULL;
|
struct saa7164_dev *dev = port->dev;
|
u32 crc;
|
|
mutex_lock(&port->dmaqueue_lock);
|
if (!list_empty(&port->list_buf_used.list)) {
|
ubuf = list_first_entry(&port->list_buf_used.list,
|
struct saa7164_user_buffer, list);
|
|
if (crc_checking) {
|
crc = crc32(0, ubuf->data, ubuf->actual_size);
|
if (crc != ubuf->crc) {
|
printk(KERN_ERR
|
"%s() ubuf %p crc became invalid, was 0x%x became 0x%x\n",
|
__func__,
|
ubuf, ubuf->crc, crc);
|
}
|
}
|
|
}
|
mutex_unlock(&port->dmaqueue_lock);
|
|
dprintk(DBGLVL_ENC, "%s() returns %p\n", __func__, ubuf);
|
|
return ubuf;
|
}
|
|
static ssize_t fops_read(struct file *file, char __user *buffer,
|
size_t count, loff_t *pos)
|
{
|
struct saa7164_encoder_fh *fh = file->private_data;
|
struct saa7164_port *port = fh->port;
|
struct saa7164_user_buffer *ubuf = NULL;
|
struct saa7164_dev *dev = port->dev;
|
int ret = 0;
|
int rem, cnt;
|
u8 *p;
|
|
port->last_read_msecs_diff = port->last_read_msecs;
|
port->last_read_msecs = jiffies_to_msecs(jiffies);
|
port->last_read_msecs_diff = port->last_read_msecs -
|
port->last_read_msecs_diff;
|
|
saa7164_histogram_update(&port->read_interval,
|
port->last_read_msecs_diff);
|
|
if (*pos) {
|
printk(KERN_ERR "%s() ESPIPE\n", __func__);
|
return -ESPIPE;
|
}
|
|
if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
|
if (atomic_inc_return(&port->v4l_reader_count) == 1) {
|
|
if (saa7164_encoder_initialize(port) < 0) {
|
printk(KERN_ERR "%s() EINVAL\n", __func__);
|
return -EINVAL;
|
}
|
|
saa7164_encoder_start_streaming(port);
|
msleep(200);
|
}
|
}
|
|
/* blocking wait for buffer */
|
if ((file->f_flags & O_NONBLOCK) == 0) {
|
if (wait_event_interruptible(port->wait_read,
|
saa7164_enc_next_buf(port))) {
|
printk(KERN_ERR "%s() ERESTARTSYS\n", __func__);
|
return -ERESTARTSYS;
|
}
|
}
|
|
/* Pull the first buffer from the used list */
|
ubuf = saa7164_enc_next_buf(port);
|
|
while ((count > 0) && ubuf) {
|
|
/* set remaining bytes to copy */
|
rem = ubuf->actual_size - ubuf->pos;
|
cnt = rem > count ? count : rem;
|
|
p = ubuf->data + ubuf->pos;
|
|
dprintk(DBGLVL_ENC,
|
"%s() count=%d cnt=%d rem=%d buf=%p buf->pos=%d\n",
|
__func__, (int)count, cnt, rem, ubuf, ubuf->pos);
|
|
if (copy_to_user(buffer, p, cnt)) {
|
printk(KERN_ERR "%s() copy_to_user failed\n", __func__);
|
if (!ret) {
|
printk(KERN_ERR "%s() EFAULT\n", __func__);
|
ret = -EFAULT;
|
}
|
goto err;
|
}
|
|
ubuf->pos += cnt;
|
count -= cnt;
|
buffer += cnt;
|
ret += cnt;
|
|
if (ubuf->pos > ubuf->actual_size)
|
printk(KERN_ERR "read() pos > actual, huh?\n");
|
|
if (ubuf->pos == ubuf->actual_size) {
|
|
/* finished with current buffer, take next buffer */
|
|
/* Requeue the buffer on the free list */
|
ubuf->pos = 0;
|
|
mutex_lock(&port->dmaqueue_lock);
|
list_move_tail(&ubuf->list, &port->list_buf_free.list);
|
mutex_unlock(&port->dmaqueue_lock);
|
|
/* Dequeue next */
|
if ((file->f_flags & O_NONBLOCK) == 0) {
|
if (wait_event_interruptible(port->wait_read,
|
saa7164_enc_next_buf(port))) {
|
break;
|
}
|
}
|
ubuf = saa7164_enc_next_buf(port);
|
}
|
}
|
err:
|
if (!ret && !ubuf)
|
ret = -EAGAIN;
|
|
return ret;
|
}
|
|
static __poll_t fops_poll(struct file *file, poll_table *wait)
|
{
|
__poll_t req_events = poll_requested_events(wait);
|
struct saa7164_encoder_fh *fh =
|
(struct saa7164_encoder_fh *)file->private_data;
|
struct saa7164_port *port = fh->port;
|
__poll_t mask = v4l2_ctrl_poll(file, wait);
|
|
port->last_poll_msecs_diff = port->last_poll_msecs;
|
port->last_poll_msecs = jiffies_to_msecs(jiffies);
|
port->last_poll_msecs_diff = port->last_poll_msecs -
|
port->last_poll_msecs_diff;
|
|
saa7164_histogram_update(&port->poll_interval,
|
port->last_poll_msecs_diff);
|
|
if (!(req_events & (EPOLLIN | EPOLLRDNORM)))
|
return mask;
|
|
if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
|
if (atomic_inc_return(&port->v4l_reader_count) == 1) {
|
if (saa7164_encoder_initialize(port) < 0)
|
return mask | EPOLLERR;
|
saa7164_encoder_start_streaming(port);
|
msleep(200);
|
}
|
}
|
|
/* Pull the first buffer from the used list */
|
if (!list_empty(&port->list_buf_used.list))
|
mask |= EPOLLIN | EPOLLRDNORM;
|
|
return mask;
|
}
|
|
static const struct v4l2_ctrl_ops saa7164_ctrl_ops = {
|
.s_ctrl = saa7164_s_ctrl,
|
};
|
|
static const struct v4l2_file_operations mpeg_fops = {
|
.owner = THIS_MODULE,
|
.open = fops_open,
|
.release = fops_release,
|
.read = fops_read,
|
.poll = fops_poll,
|
.unlocked_ioctl = video_ioctl2,
|
};
|
|
static const struct v4l2_ioctl_ops mpeg_ioctl_ops = {
|
.vidioc_s_std = vidioc_s_std,
|
.vidioc_g_std = vidioc_g_std,
|
.vidioc_enum_input = saa7164_enum_input,
|
.vidioc_g_input = vidioc_g_input,
|
.vidioc_s_input = vidioc_s_input,
|
.vidioc_g_tuner = saa7164_g_tuner,
|
.vidioc_s_tuner = saa7164_s_tuner,
|
.vidioc_g_frequency = vidioc_g_frequency,
|
.vidioc_s_frequency = vidioc_s_frequency,
|
.vidioc_querycap = vidioc_querycap,
|
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
|
.vidioc_g_fmt_vid_cap = vidioc_fmt_vid_cap,
|
.vidioc_try_fmt_vid_cap = vidioc_fmt_vid_cap,
|
.vidioc_s_fmt_vid_cap = vidioc_fmt_vid_cap,
|
.vidioc_log_status = v4l2_ctrl_log_status,
|
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
};
|
|
static struct video_device saa7164_mpeg_template = {
|
.name = "saa7164",
|
.fops = &mpeg_fops,
|
.ioctl_ops = &mpeg_ioctl_ops,
|
.minor = -1,
|
.tvnorms = SAA7164_NORMS,
|
.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
|
V4L2_CAP_TUNER,
|
};
|
|
static struct video_device *saa7164_encoder_alloc(
|
struct saa7164_port *port,
|
struct pci_dev *pci,
|
struct video_device *template,
|
char *type)
|
{
|
struct video_device *vfd;
|
struct saa7164_dev *dev = port->dev;
|
|
dprintk(DBGLVL_ENC, "%s()\n", __func__);
|
|
vfd = video_device_alloc();
|
if (NULL == vfd)
|
return NULL;
|
|
*vfd = *template;
|
snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name,
|
type, saa7164_boards[dev->board].name);
|
|
vfd->v4l2_dev = &dev->v4l2_dev;
|
vfd->release = video_device_release;
|
return vfd;
|
}
|
|
int saa7164_encoder_register(struct saa7164_port *port)
|
{
|
struct saa7164_dev *dev = port->dev;
|
struct v4l2_ctrl_handler *hdl = &port->ctrl_handler;
|
int result = -ENODEV;
|
|
dprintk(DBGLVL_ENC, "%s()\n", __func__);
|
|
BUG_ON(port->type != SAA7164_MPEG_ENCODER);
|
|
/* Sanity check that the PCI configuration space is active */
|
if (port->hwcfg.BARLocation == 0) {
|
printk(KERN_ERR "%s() failed (errno = %d), NO PCI configuration\n",
|
__func__, result);
|
result = -ENOMEM;
|
goto fail_pci;
|
}
|
|
/* Establish encoder defaults here */
|
/* Set default TV standard */
|
port->encodernorm = saa7164_tvnorms[0];
|
port->width = 720;
|
port->mux_input = 1; /* Composite */
|
port->video_format = EU_VIDEO_FORMAT_MPEG_2;
|
port->audio_format = 0;
|
port->video_resolution = 0;
|
port->freq = SAA7164_TV_MIN_FREQ;
|
|
v4l2_ctrl_handler_init(hdl, 14);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_BRIGHTNESS, 0, 255, 1, 127);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_CONTRAST, 0, 255, 1, 66);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_SATURATION, 0, 255, 1, 62);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_HUE, 0, 255, 1, 128);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_SHARPNESS, 0x0, 0x0f, 1, 8);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_MPEG_AUDIO_MUTE, 0x0, 0x01, 1, 0);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_AUDIO_VOLUME, -83, 24, 1, 20);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_MPEG_VIDEO_BITRATE,
|
ENCODER_MIN_BITRATE, ENCODER_MAX_BITRATE,
|
100000, ENCODER_DEF_BITRATE);
|
v4l2_ctrl_new_std_menu(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_MPEG_STREAM_TYPE,
|
V4L2_MPEG_STREAM_TYPE_MPEG2_TS, 0,
|
V4L2_MPEG_STREAM_TYPE_MPEG2_PS);
|
v4l2_ctrl_new_std_menu(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_MPEG_VIDEO_ASPECT,
|
V4L2_MPEG_VIDEO_ASPECT_221x100, 0,
|
V4L2_MPEG_VIDEO_ASPECT_4x3);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 255, 1, 15);
|
v4l2_ctrl_new_std_menu(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
|
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
|
V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_MPEG_VIDEO_B_FRAMES, 1, 3, 1, 1);
|
v4l2_ctrl_new_std(hdl, &saa7164_ctrl_ops,
|
V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
|
ENCODER_MIN_BITRATE, ENCODER_MAX_BITRATE,
|
100000, ENCODER_DEF_BITRATE);
|
if (hdl->error) {
|
result = hdl->error;
|
goto fail_hdl;
|
}
|
|
port->std = V4L2_STD_NTSC_M;
|
|
if (port->encodernorm.id & V4L2_STD_525_60)
|
port->height = 480;
|
else
|
port->height = 576;
|
|
/* Allocate and register the video device node */
|
port->v4l_device = saa7164_encoder_alloc(port,
|
dev->pci, &saa7164_mpeg_template, "mpeg");
|
|
if (!port->v4l_device) {
|
printk(KERN_INFO "%s: can't allocate mpeg device\n",
|
dev->name);
|
result = -ENOMEM;
|
goto fail_hdl;
|
}
|
|
port->v4l_device->ctrl_handler = hdl;
|
v4l2_ctrl_handler_setup(hdl);
|
video_set_drvdata(port->v4l_device, port);
|
result = video_register_device(port->v4l_device,
|
VFL_TYPE_VIDEO, -1);
|
if (result < 0) {
|
printk(KERN_INFO "%s: can't register mpeg device\n",
|
dev->name);
|
goto fail_reg;
|
}
|
|
printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
|
dev->name, port->v4l_device->num);
|
|
/* Configure the hardware defaults */
|
saa7164_api_set_videomux(port);
|
saa7164_api_set_usercontrol(port, PU_BRIGHTNESS_CONTROL);
|
saa7164_api_set_usercontrol(port, PU_CONTRAST_CONTROL);
|
saa7164_api_set_usercontrol(port, PU_HUE_CONTROL);
|
saa7164_api_set_usercontrol(port, PU_SATURATION_CONTROL);
|
saa7164_api_set_usercontrol(port, PU_SHARPNESS_CONTROL);
|
saa7164_api_audio_mute(port, 0);
|
saa7164_api_set_audio_volume(port, 20);
|
saa7164_api_set_aspect_ratio(port);
|
|
/* Disable audio standard detection, it's buggy */
|
saa7164_api_set_audio_detection(port, 0);
|
|
saa7164_api_set_encoder(port);
|
saa7164_api_get_encoder(port);
|
return 0;
|
|
fail_reg:
|
video_device_release(port->v4l_device);
|
port->v4l_device = NULL;
|
fail_hdl:
|
v4l2_ctrl_handler_free(hdl);
|
fail_pci:
|
return result;
|
}
|
|
void saa7164_encoder_unregister(struct saa7164_port *port)
|
{
|
struct saa7164_dev *dev = port->dev;
|
|
dprintk(DBGLVL_ENC, "%s(port=%d)\n", __func__, port->nr);
|
|
BUG_ON(port->type != SAA7164_MPEG_ENCODER);
|
|
if (port->v4l_device) {
|
if (port->v4l_device->minor != -1)
|
video_unregister_device(port->v4l_device);
|
else
|
video_device_release(port->v4l_device);
|
|
port->v4l_device = NULL;
|
}
|
v4l2_ctrl_handler_free(&port->ctrl_handler);
|
|
dprintk(DBGLVL_ENC, "%s(port=%d) done\n", __func__, port->nr);
|
}
|
