drivers/media/usb/hdpvr/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
  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
  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
  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
 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
 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
 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 }