hdpvr-control.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * Hauppauge HD PVR USB driver - video 4 linux 2 interface
  4 *
  5 * Copyright (C) 2008      Janne Grunau (j@jannau.net)
  6 */
  7
  8#include <linux/kernel.h>
  9#include <linux/errno.h>
 10#include <linux/init.h>
 11#include <linux/slab.h>
 12#include <linux/module.h>
 13#include <linux/usb.h>
 14#include <linux/mutex.h>
 15
 16#include <linux/videodev2.h>
 17
 18#include <media/v4l2-common.h>
 19
 20#include "hdpvr.h"
 21
 22
 23int hdpvr_config_call(struct hdpvr_device *dev, uint value, u8 valbuf)
 24{
 25	int ret;
 26	char request_type = 0x38, snd_request = 0x01;
 27
 28	mutex_lock(&dev->usbc_mutex);
 29	dev->usbc_buf[0] = valbuf;
 30	ret = usb_control_msg(dev->udev,
 31			      usb_sndctrlpipe(dev->udev, 0),
 32			      snd_request, 0x00 | request_type,
 33			      value, CTRL_DEFAULT_INDEX,
 34			      dev->usbc_buf, 1, 10000);
 35
 36	mutex_unlock(&dev->usbc_mutex);
 37	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
 38		 "config call request for value 0x%x returned %d\n", value,
 39		 ret);
 40
 41	return ret < 0 ? ret : 0;
 42}
 43
 44int get_video_info(struct hdpvr_device *dev, struct hdpvr_video_info *vidinf)
 45{
 46	int ret;
 47
 48	vidinf->valid = false;
 49	mutex_lock(&dev->usbc_mutex);
 50	ret = usb_control_msg(dev->udev,
 51			      usb_rcvctrlpipe(dev->udev, 0),
 52			      0x81, 0x80 | 0x38,
 53			      0x1400, 0x0003,
 54			      dev->usbc_buf, 5,
 55			      1000);
 56
 57#ifdef HDPVR_DEBUG
 58	if (hdpvr_debug & MSG_INFO)
 59		v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
 60			 "get video info returned: %d, %5ph\n", ret,
 61			 dev->usbc_buf);
 62#endif
 63	mutex_unlock(&dev->usbc_mutex);
 64
 65	if (ret < 0)
 66		return ret;
 67
 68	vidinf->width	= dev->usbc_buf[1] << 8 | dev->usbc_buf[0];
 69	vidinf->height	= dev->usbc_buf[3] << 8 | dev->usbc_buf[2];
 70	vidinf->fps	= dev->usbc_buf[4];
 71	vidinf->valid   = vidinf->width && vidinf->height && vidinf->fps;
 72
 73	return 0;
 74}
 75
 76int get_input_lines_info(struct hdpvr_device *dev)
 77{
 78	int ret, lines;
 79
 80	mutex_lock(&dev->usbc_mutex);
 81	ret = usb_control_msg(dev->udev,
 82			      usb_rcvctrlpipe(dev->udev, 0),
 83			      0x81, 0x80 | 0x38,
 84			      0x1800, 0x0003,
 85			      dev->usbc_buf, 3,
 86			      1000);
 87
 88#ifdef HDPVR_DEBUG
 89	if (hdpvr_debug & MSG_INFO)
 90		v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
 91			 "get input lines info returned: %d, %3ph\n", ret,
 92			 dev->usbc_buf);
 93#else
 94	(void)ret;	/* suppress compiler warning */
 95#endif
 96	lines = dev->usbc_buf[1] << 8 | dev->usbc_buf[0];
 97	mutex_unlock(&dev->usbc_mutex);
 98	return lines;
 99}
100
101
102int hdpvr_set_bitrate(struct hdpvr_device *dev)
103{
104	int ret;
105
106	mutex_lock(&dev->usbc_mutex);
107	memset(dev->usbc_buf, 0, 4);
108	dev->usbc_buf[0] = dev->options.bitrate;
109	dev->usbc_buf[2] = dev->options.peak_bitrate;
110
111	ret = usb_control_msg(dev->udev,
112			      usb_sndctrlpipe(dev->udev, 0),
113			      0x01, 0x38, CTRL_BITRATE_VALUE,
114			      CTRL_DEFAULT_INDEX, dev->usbc_buf, 4, 1000);
115	mutex_unlock(&dev->usbc_mutex);
116
117	return ret;
118}
119
120int hdpvr_set_audio(struct hdpvr_device *dev, u8 input,
121		    enum v4l2_mpeg_audio_encoding codec)
122{
123	int ret = 0;
124
125	if (dev->flags & HDPVR_FLAG_AC3_CAP) {
126		mutex_lock(&dev->usbc_mutex);
127		memset(dev->usbc_buf, 0, 2);
128		dev->usbc_buf[0] = input;
129		if (codec == V4L2_MPEG_AUDIO_ENCODING_AAC)
130			dev->usbc_buf[1] = 0;
131		else if (codec == V4L2_MPEG_AUDIO_ENCODING_AC3)
132			dev->usbc_buf[1] = 1;
133		else {
134			mutex_unlock(&dev->usbc_mutex);
135			v4l2_err(&dev->v4l2_dev, "invalid audio codec %d\n",
136				 codec);
137			ret = -EINVAL;
138			goto error;
139		}
140
141		ret = usb_control_msg(dev->udev,
142				      usb_sndctrlpipe(dev->udev, 0),
143				      0x01, 0x38, CTRL_AUDIO_INPUT_VALUE,
144				      CTRL_DEFAULT_INDEX, dev->usbc_buf, 2,
145				      1000);
146		mutex_unlock(&dev->usbc_mutex);
147		if (ret == 2)
148			ret = 0;
149	} else
150		ret = hdpvr_config_call(dev, CTRL_AUDIO_INPUT_VALUE, input);
151error:
152	return ret;
153}
154
155int hdpvr_set_options(struct hdpvr_device *dev)
156{
157	hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, dev->options.video_std);
158
159	hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE,
160			 dev->options.video_input+1);
161
162	hdpvr_set_audio(dev, dev->options.audio_input+1,
163		       dev->options.audio_codec);
164
165	hdpvr_set_bitrate(dev);
166	hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
167			 dev->options.bitrate_mode);
168	hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, dev->options.gop_mode);
169
170	hdpvr_config_call(dev, CTRL_BRIGHTNESS, dev->options.brightness);
171	hdpvr_config_call(dev, CTRL_CONTRAST,   dev->options.contrast);
172	hdpvr_config_call(dev, CTRL_HUE,        dev->options.hue);
173	hdpvr_config_call(dev, CTRL_SATURATION, dev->options.saturation);
174	hdpvr_config_call(dev, CTRL_SHARPNESS,  dev->options.sharpness);
175
176	return 0;
177}