kernel/drivers/media/usb/hdpvr/hdpvr-control.c

   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
  27 int 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
  48 int 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
  80 int 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
 106 int 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
 124 int 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);
 155 error:
 156         return ret;
 157 }
 158
 159 int 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 }