drivers/media/video/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 struct hdpvr_video_info *get_video_info(struct hdpvr_device *dev)
  49 {
  50         struct hdpvr_video_info *vidinf = NULL;
  51 #ifdef HDPVR_DEBUG
  52         char print_buf[15];
  53 #endif
  54         int ret;
  55
  56         vidinf = kzalloc(sizeof(struct hdpvr_video_info), GFP_KERNEL);
  57         if (!vidinf) {
  58                 v4l2_err(&dev->v4l2_dev, "out of memory\n");
  59                 goto err;
  60         }
  61
  62         mutex_lock(&dev->usbc_mutex);
  63         ret = usb_control_msg(dev->udev,
  64                               usb_rcvctrlpipe(dev->udev, 0),
  65                               0x81, 0x80 | 0x38,
  66                               0x1400, 0x0003,
  67                               dev->usbc_buf, 5,
  68                               1000);
  69         if (ret == 5) {
  70                 vidinf->width   = dev->usbc_buf[1] << 8 | dev->usbc_buf[0];
  71                 vidinf->height  = dev->usbc_buf[3] << 8 | dev->usbc_buf[2];
  72                 vidinf->fps     = dev->usbc_buf[4];
  73         }
  74
  75 #ifdef HDPVR_DEBUG
  76         if (hdpvr_debug & MSG_INFO) {
  77                 hex_dump_to_buffer(dev->usbc_buf, 5, 16, 1, print_buf,
  78                                    sizeof(print_buf), 0);
  79                 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
  80                          "get video info returned: %d, %s\n", ret, print_buf);
  81         }
  82 #endif
  83         mutex_unlock(&dev->usbc_mutex);
  84
  85         if (!vidinf->width || !vidinf->height || !vidinf->fps) {
  86                 kfree(vidinf);
  87                 vidinf = NULL;
  88         }
  89 err:
  90         return vidinf;
  91 }
  92
  93 int get_input_lines_info(struct hdpvr_device *dev)
  94 {
  95 #ifdef HDPVR_DEBUG
  96         char print_buf[9];
  97 #endif
  98         int ret, lines;
  99
 100         mutex_lock(&dev->usbc_mutex);
 101         ret = usb_control_msg(dev->udev,
 102                               usb_rcvctrlpipe(dev->udev, 0),
 103                               0x81, 0x80 | 0x38,
 104                               0x1800, 0x0003,
 105                               dev->usbc_buf, 3,
 106                               1000);
 107
 108 #ifdef HDPVR_DEBUG
 109         if (hdpvr_debug & MSG_INFO) {
 110                 hex_dump_to_buffer(dev->usbc_buf, 3, 16, 1, print_buf,
 111                                    sizeof(print_buf), 0);
 112                 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev,
 113                          "get input lines info returned: %d, %s\n", ret,
 114                          print_buf);
 115         }
 116 #else
 117         (void)ret;      /* suppress compiler warning */
 118 #endif
 119         lines = dev->usbc_buf[1] << 8 | dev->usbc_buf[0];
 120         mutex_unlock(&dev->usbc_mutex);
 121         return lines;
 122 }
 123
 124
 125 int hdpvr_set_bitrate(struct hdpvr_device *dev)
 126 {
 127         int ret;
 128
 129         mutex_lock(&dev->usbc_mutex);
 130         memset(dev->usbc_buf, 0, 4);
 131         dev->usbc_buf[0] = dev->options.bitrate;
 132         dev->usbc_buf[2] = dev->options.peak_bitrate;
 133
 134         ret = usb_control_msg(dev->udev,
 135                               usb_sndctrlpipe(dev->udev, 0),
 136                               0x01, 0x38, CTRL_BITRATE_VALUE,
 137                               CTRL_DEFAULT_INDEX, dev->usbc_buf, 4, 1000);
 138         mutex_unlock(&dev->usbc_mutex);
 139
 140         return ret;
 141 }
 142
 143 int hdpvr_set_audio(struct hdpvr_device *dev, u8 input,
 144                     enum v4l2_mpeg_audio_encoding codec)
 145 {
 146         int ret = 0;
 147
 148         if (dev->flags & HDPVR_FLAG_AC3_CAP) {
 149                 mutex_lock(&dev->usbc_mutex);
 150                 memset(dev->usbc_buf, 0, 2);
 151                 dev->usbc_buf[0] = input;
 152                 if (codec == V4L2_MPEG_AUDIO_ENCODING_AAC)
 153                         dev->usbc_buf[1] = 0;
 154                 else if (codec == V4L2_MPEG_AUDIO_ENCODING_AC3)
 155                         dev->usbc_buf[1] = 1;
 156                 else {
 157                         mutex_unlock(&dev->usbc_mutex);
 158                         v4l2_err(&dev->v4l2_dev, "invalid audio codec %d\n",
 159                                  codec);
 160                         ret = -EINVAL;
 161                         goto error;
 162                 }
 163
 164                 ret = usb_control_msg(dev->udev,
 165                                       usb_sndctrlpipe(dev->udev, 0),
 166                                       0x01, 0x38, CTRL_AUDIO_INPUT_VALUE,
 167                                       CTRL_DEFAULT_INDEX, dev->usbc_buf, 2,
 168                                       1000);
 169                 mutex_unlock(&dev->usbc_mutex);
 170                 if (ret == 2)
 171                         ret = 0;
 172         } else
 173                 ret = hdpvr_config_call(dev, CTRL_AUDIO_INPUT_VALUE, input);
 174 error:
 175         return ret;
 176 }
 177
 178 int hdpvr_set_options(struct hdpvr_device *dev)
 179 {
 180         hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, dev->options.video_std);
 181
 182         hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE,
 183                          dev->options.video_input+1);
 184
 185         hdpvr_set_audio(dev, dev->options.audio_input+1,
 186                        dev->options.audio_codec);
 187
 188         hdpvr_set_bitrate(dev);
 189         hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE,
 190                          dev->options.bitrate_mode);
 191         hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, dev->options.gop_mode);
 192
 193         hdpvr_config_call(dev, CTRL_BRIGHTNESS, dev->options.brightness);
 194         hdpvr_config_call(dev, CTRL_CONTRAST,   dev->options.contrast);
 195         hdpvr_config_call(dev, CTRL_HUE,        dev->options.hue);
 196         hdpvr_config_call(dev, CTRL_SATURATION, dev->options.saturation);
 197         hdpvr_config_call(dev, CTRL_SHARPNESS,  dev->options.sharpness);
 198
 199         return 0;
 200 }