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 
hdpvr_config_call(struct hdpvr_device * dev,uint value,u8 valbuf)23 int 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 
get_video_info(struct hdpvr_device * dev,struct hdpvr_video_info * vidinf)44 int 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 
get_input_lines_info(struct hdpvr_device * dev)76 int 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 
hdpvr_set_bitrate(struct hdpvr_device * dev)102 int 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 
hdpvr_set_audio(struct hdpvr_device * dev,u8 input,enum v4l2_mpeg_audio_encoding codec)120 int 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);
151 error:
152 	return ret;
153 }
154 
hdpvr_set_options(struct hdpvr_device * dev)155 int 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 }
178