1/*
2 * Hauppauge HD PVR USB driver - video 4 linux 2 interface
3 *
4 * Copyright (C) 2008      Janne Grunau (j@jannau.net)
5 *
6 *	This program is free software; you can redistribute it and/or
7 *	modify it under the terms of the GNU General Public License as
8 *	published by the Free Software Foundation, version 2.
9 *
10 */
11
12#include <linux/kernel.h>
13#include <linux/errno.h>
14#include <linux/init.h>
15#include <linux/slab.h>
16#include <linux/module.h>
17#include <linux/usb.h>
18#include <linux/mutex.h>
19
20#include <linux/videodev2.h>
21
22#include <media/v4l2-common.h>
23
24#include "hdpvr.h"
25
26
27int hdpvr_config_call(struct hdpvr_device *dev, uint value, u8 valbuf)
28{
29	int ret;
30	char request_type = 0x38, snd_request = 0x01;
31
32	mutex_lock(&dev->usbc_mutex);
33	dev->usbc_buf[0] = valbuf;
34	ret = usb_control_msg(dev->udev,
35			      usb_sndctrlpipe(dev->udev, 0),
36			      snd_request, 0x00 | request_type,
37			      value, CTRL_DEFAULT_INDEX,
38			      dev->usbc_buf, 1, 10000);
39
40	mutex_unlock(&dev->usbc_mutex);
41	v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
42		 "config call request for value 0x%x returned %d\n", value,
43		 ret);
44
45	return ret < 0 ? ret : 0;
46}
47
48int get_video_info(struct hdpvr_device *dev, struct hdpvr_video_info *vidinf)
49{
50	int ret;
51
52	vidinf->valid = false;
53	mutex_lock(&dev->usbc_mutex);
54	ret = usb_control_msg(dev->udev,
55			      usb_rcvctrlpipe(dev->udev, 0),
56			      0x81, 0x80 | 0x38,
57			      0x1400, 0x0003,
58			      dev->usbc_buf, 5,
59			      1000);
60
61#ifdef HDPVR_DEBUG
62	if (hdpvr_debug & MSG_INFO)
63		v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
64			 "get video info returned: %d, %5ph\n", ret,
65			 dev->usbc_buf);
66#endif
67	mutex_unlock(&dev->usbc_mutex);
68
69	if (ret < 0)
70		return ret;
71
72	vidinf->width	= dev->usbc_buf[1] << 8 | dev->usbc_buf[0];
73	vidinf->height	= dev->usbc_buf[3] << 8 | dev->usbc_buf[2];
74	vidinf->fps	= dev->usbc_buf[4];
75	vidinf->valid   = vidinf->width && vidinf->height && vidinf->fps;
76
77	return 0;
78}
79
80int get_input_lines_info(struct hdpvr_device *dev)
81{
82	int ret, lines;
83
84	mutex_lock(&dev->usbc_mutex);
85	ret = usb_control_msg(dev->udev,
86			      usb_rcvctrlpipe(dev->udev, 0),
87			      0x81, 0x80 | 0x38,
88			      0x1800, 0x0003,
89			      dev->usbc_buf, 3,
90			      1000);
91
92#ifdef HDPVR_DEBUG
93	if (hdpvr_debug & MSG_INFO)
94		v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
95			 "get input lines info returned: %d, %3ph\n", ret,
96			 dev->usbc_buf);
97#else
98	(void)ret;	/* suppress compiler warning */
99#endif
100	lines = dev->usbc_buf[1] << 8 | dev->usbc_buf[0];
101	mutex_unlock(&dev->usbc_mutex);
102	return lines;
103}
104
105
106int hdpvr_set_bitrate(struct hdpvr_device *dev)
107{
108	int ret;
109
110	mutex_lock(&dev->usbc_mutex);
111	memset(dev->usbc_buf, 0, 4);
112	dev->usbc_buf[0] = dev->options.bitrate;
113	dev->usbc_buf[2] = dev->options.peak_bitrate;
114
115	ret = usb_control_msg(dev->udev,
116			      usb_sndctrlpipe(dev->udev, 0),
117			      0x01, 0x38, CTRL_BITRATE_VALUE,
118			      CTRL_DEFAULT_INDEX, dev->usbc_buf, 4, 1000);
119	mutex_unlock(&dev->usbc_mutex);
120
121	return ret;
122}
123
124int hdpvr_set_audio(struct hdpvr_device *dev, u8 input,
125		    enum v4l2_mpeg_audio_encoding codec)
126{
127	int ret = 0;
128
129	if (dev->flags & HDPVR_FLAG_AC3_CAP) {
130		mutex_lock(&dev->usbc_mutex);
131		memset(dev->usbc_buf, 0, 2);
132		dev->usbc_buf[0] = input;
133		if (codec == V4L2_MPEG_AUDIO_ENCODING_AAC)
134			dev->usbc_buf[1] = 0;
135		else if (codec == V4L2_MPEG_AUDIO_ENCODING_AC3)
136			dev->usbc_buf[1] = 1;
137		else {
138			mutex_unlock(&dev->usbc_mutex);
139			v4l2_err(&dev->v4l2_dev, "invalid audio codec %d\n",
140				 codec);
141			ret = -EINVAL;
142			goto error;
143		}
144
145		ret = usb_control_msg(dev->udev,
146				      usb_sndctrlpipe(dev->udev, 0),
147				      0x01, 0x38, CTRL_AUDIO_INPUT_VALUE,
148				      CTRL_DEFAULT_INDEX, dev->usbc_buf, 2,
149				      1000);
150		mutex_unlock(&dev->usbc_mutex);
151		if (ret == 2)
152			ret = 0;
153	} else
154		ret = hdpvr_config_call(dev, CTRL_AUDIO_INPUT_VALUE, input);
155error:
156	return ret;
157}
158
159int hdpvr_set_options(struct hdpvr_device *dev)
160{
161	hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, dev->options.video_std);
162
163	hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE,
164			 dev->options.video_input+1);
165
166	hdpvr_set_audio(dev, dev->options.audio_input+1,
167		       dev->options.audio_codec);
168
169	hdpvr_set_bitrate(dev);
170	hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
171			 dev->options.bitrate_mode);
172	hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, dev->options.gop_mode);
173
174	hdpvr_config_call(dev, CTRL_BRIGHTNESS, dev->options.brightness);
175	hdpvr_config_call(dev, CTRL_CONTRAST,   dev->options.contrast);
176	hdpvr_config_call(dev, CTRL_HUE,        dev->options.hue);
177	hdpvr_config_call(dev, CTRL_SATURATION, dev->options.saturation);
178	hdpvr_config_call(dev, CTRL_SHARPNESS,  dev->options.sharpness);
179
180	return 0;
181}
182