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/*
* Hauppauge HD PVR USB driver - video 4 linux 2 interface
*
* Copyright (C) 2008 Janne Grunau (j@jannau.net)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, version 2.
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/usb.h>
#include <linux/mutex.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include "hdpvr.h"
int hdpvr_config_call(struct hdpvr_device *dev, uint value, u8 valbuf)
{
int ret;
char request_type = 0x38, snd_request = 0x01;
mutex_lock(&dev->usbc_mutex);
dev->usbc_buf[0] = valbuf;
ret = usb_control_msg(dev->udev,
usb_sndctrlpipe(dev->udev, 0),
snd_request, 0x00 | request_type,
value, CTRL_DEFAULT_INDEX,
dev->usbc_buf, 1, 10000);
mutex_unlock(&dev->usbc_mutex);
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"config call request for value 0x%x returned %d\n", value,
ret);
return ret < 0 ? ret : 0;
}
int get_video_info(struct hdpvr_device *dev, struct hdpvr_video_info *vidinf)
{
int ret;
mutex_lock(&dev->usbc_mutex);
ret = usb_control_msg(dev->udev,
usb_rcvctrlpipe(dev->udev, 0),
0x81, 0x80 | 0x38,
0x1400, 0x0003,
dev->usbc_buf, 5,
1000);
if (ret == 5) {
vidinf->width = dev->usbc_buf[1] << 8 | dev->usbc_buf[0];
vidinf->height = dev->usbc_buf[3] << 8 | dev->usbc_buf[2];
vidinf->fps = dev->usbc_buf[4];
}
#ifdef HDPVR_DEBUG
if (hdpvr_debug & MSG_INFO) {
char print_buf[15];
hex_dump_to_buffer(dev->usbc_buf, 5, 16, 1, print_buf,
sizeof(print_buf), 0);
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"get video info returned: %d, %s\n", ret, print_buf);
}
#endif
mutex_unlock(&dev->usbc_mutex);
if ((ret > 0 && ret != 5) ||/* fail if unexpected byte count returned */
!vidinf->width || /* preserve original behavior - */
!vidinf->height || /* fail if no signal is detected */
!vidinf->fps) {
ret = -EFAULT;
}
return ret < 0 ? ret : 0;
}
int get_input_lines_info(struct hdpvr_device *dev)
{
#ifdef HDPVR_DEBUG
char print_buf[9];
#endif
int ret, lines;
mutex_lock(&dev->usbc_mutex);
ret = usb_control_msg(dev->udev,
usb_rcvctrlpipe(dev->udev, 0),
0x81, 0x80 | 0x38,
0x1800, 0x0003,
dev->usbc_buf, 3,
1000);
#ifdef HDPVR_DEBUG
if (hdpvr_debug & MSG_INFO) {
hex_dump_to_buffer(dev->usbc_buf, 3, 16, 1, print_buf,
sizeof(print_buf), 0);
v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
"get input lines info returned: %d, %s\n", ret,
print_buf);
}
#else
(void)ret; /* suppress compiler warning */
#endif
lines = dev->usbc_buf[1] << 8 | dev->usbc_buf[0];
mutex_unlock(&dev->usbc_mutex);
return lines;
}
int hdpvr_set_bitrate(struct hdpvr_device *dev)
{
int ret;
mutex_lock(&dev->usbc_mutex);
memset(dev->usbc_buf, 0, 4);
dev->usbc_buf[0] = dev->options.bitrate;
dev->usbc_buf[2] = dev->options.peak_bitrate;
ret = usb_control_msg(dev->udev,
usb_sndctrlpipe(dev->udev, 0),
0x01, 0x38, CTRL_BITRATE_VALUE,
CTRL_DEFAULT_INDEX, dev->usbc_buf, 4, 1000);
mutex_unlock(&dev->usbc_mutex);
return ret;
}
int hdpvr_set_audio(struct hdpvr_device *dev, u8 input,
enum v4l2_mpeg_audio_encoding codec)
{
int ret = 0;
if (dev->flags & HDPVR_FLAG_AC3_CAP) {
mutex_lock(&dev->usbc_mutex);
memset(dev->usbc_buf, 0, 2);
dev->usbc_buf[0] = input;
if (codec == V4L2_MPEG_AUDIO_ENCODING_AAC)
dev->usbc_buf[1] = 0;
else if (codec == V4L2_MPEG_AUDIO_ENCODING_AC3)
dev->usbc_buf[1] = 1;
else {
mutex_unlock(&dev->usbc_mutex);
v4l2_err(&dev->v4l2_dev, "invalid audio codec %d\n",
codec);
ret = -EINVAL;
goto error;
}
ret = usb_control_msg(dev->udev,
usb_sndctrlpipe(dev->udev, 0),
0x01, 0x38, CTRL_AUDIO_INPUT_VALUE,
CTRL_DEFAULT_INDEX, dev->usbc_buf, 2,
1000);
mutex_unlock(&dev->usbc_mutex);
if (ret == 2)
ret = 0;
} else
ret = hdpvr_config_call(dev, CTRL_AUDIO_INPUT_VALUE, input);
error:
return ret;
}
int hdpvr_set_options(struct hdpvr_device *dev)
{
hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, dev->options.video_std);
hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE,
dev->options.video_input+1);
hdpvr_set_audio(dev, dev->options.audio_input+1,
dev->options.audio_codec);
hdpvr_set_bitrate(dev);
hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
dev->options.bitrate_mode);
hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, dev->options.gop_mode);
hdpvr_config_call(dev, CTRL_BRIGHTNESS, dev->options.brightness);
hdpvr_config_call(dev, CTRL_CONTRAST, dev->options.contrast);
hdpvr_config_call(dev, CTRL_HUE, dev->options.hue);
hdpvr_config_call(dev, CTRL_SATURATION, dev->options.saturation);
hdpvr_config_call(dev, CTRL_SHARPNESS, dev->options.sharpness);
return 0;
}
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