drivers/media/video/ivtv/ivtv-controls.c

   1 /*
   2     ioctl control functions
   3     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
   4     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "ivtv-driver.h"
  22 #include "ivtv-cards.h"
  23 #include "ivtv-ioctl.h"
  24 #include "ivtv-routing.h"
  25 #include "ivtv-i2c.h"
  26 #include "ivtv-mailbox.h"
  27 #include "ivtv-controls.h"
  28
  29 static const u32 user_ctrls[] = {
  30         V4L2_CID_USER_CLASS,
  31         V4L2_CID_BRIGHTNESS,
  32         V4L2_CID_CONTRAST,
  33         V4L2_CID_SATURATION,
  34         V4L2_CID_HUE,
  35         V4L2_CID_AUDIO_VOLUME,
  36         V4L2_CID_AUDIO_BALANCE,
  37         V4L2_CID_AUDIO_BASS,
  38         V4L2_CID_AUDIO_TREBLE,
  39         V4L2_CID_AUDIO_MUTE,
  40         V4L2_CID_AUDIO_LOUDNESS,
  41         0
  42 };
  43
  44 static const u32 *ctrl_classes[] = {
  45         user_ctrls,
  46         cx2341x_mpeg_ctrls,
  47         NULL
  48 };
  49
  50 static int ivtv_queryctrl(struct ivtv *itv, struct v4l2_queryctrl *qctrl)
  51 {
  52         const char *name;
  53
  54         IVTV_DEBUG_IOCTL("VIDIOC_QUERYCTRL(%08x)\n", qctrl->id);
  55
  56         qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
  57         if (qctrl->id == 0)
  58                 return -EINVAL;
  59
  60         switch (qctrl->id) {
  61         /* Standard V4L2 controls */
  62         case V4L2_CID_BRIGHTNESS:
  63         case V4L2_CID_HUE:
  64         case V4L2_CID_SATURATION:
  65         case V4L2_CID_CONTRAST:
  66                 if (itv->video_dec_func(itv, VIDIOC_QUERYCTRL, qctrl))
  67                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  68                 return 0;
  69
  70         case V4L2_CID_AUDIO_VOLUME:
  71         case V4L2_CID_AUDIO_MUTE:
  72         case V4L2_CID_AUDIO_BALANCE:
  73         case V4L2_CID_AUDIO_BASS:
  74         case V4L2_CID_AUDIO_TREBLE:
  75         case V4L2_CID_AUDIO_LOUDNESS:
  76                 if (ivtv_i2c_hw(itv, itv->card->hw_audio_ctrl, VIDIOC_QUERYCTRL, qctrl))
  77                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  78                 return 0;
  79
  80         default:
  81                 if (cx2341x_ctrl_query(&itv->params, qctrl))
  82                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  83                 return 0;
  84         }
  85         strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
  86         qctrl->name[sizeof(qctrl->name) - 1] = 0;
  87         return 0;
  88 }
  89
  90 static int ivtv_querymenu(struct ivtv *itv, struct v4l2_querymenu *qmenu)
  91 {
  92         struct v4l2_queryctrl qctrl;
  93
  94         qctrl.id = qmenu->id;
  95         ivtv_queryctrl(itv, &qctrl);
  96         return v4l2_ctrl_query_menu(qmenu, &qctrl, cx2341x_ctrl_get_menu(qmenu->id));
  97 }
  98
  99 static int ivtv_s_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
 100 {
 101         s32 v = vctrl->value;
 102
 103         IVTV_DEBUG_IOCTL("VIDIOC_S_CTRL(%08x, %x)\n", vctrl->id, v);
 104
 105         switch (vctrl->id) {
 106                 /* Standard V4L2 controls */
 107         case V4L2_CID_BRIGHTNESS:
 108         case V4L2_CID_HUE:
 109         case V4L2_CID_SATURATION:
 110         case V4L2_CID_CONTRAST:
 111                 return itv->video_dec_func(itv, VIDIOC_S_CTRL, vctrl);
 112
 113         case V4L2_CID_AUDIO_VOLUME:
 114         case V4L2_CID_AUDIO_MUTE:
 115         case V4L2_CID_AUDIO_BALANCE:
 116         case V4L2_CID_AUDIO_BASS:
 117         case V4L2_CID_AUDIO_TREBLE:
 118         case V4L2_CID_AUDIO_LOUDNESS:
 119                 return ivtv_i2c_hw(itv, itv->card->hw_audio_ctrl, VIDIOC_S_CTRL, vctrl);
 120
 121         default:
 122                 IVTV_DEBUG_IOCTL("invalid control %x\n", vctrl->id);
 123                 return -EINVAL;
 124         }
 125         return 0;
 126 }
 127
 128 static int ivtv_g_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
 129 {
 130         IVTV_DEBUG_IOCTL("VIDIOC_G_CTRL(%08x)\n", vctrl->id);
 131
 132         switch (vctrl->id) {
 133                 /* Standard V4L2 controls */
 134         case V4L2_CID_BRIGHTNESS:
 135         case V4L2_CID_HUE:
 136         case V4L2_CID_SATURATION:
 137         case V4L2_CID_CONTRAST:
 138                 return itv->video_dec_func(itv, VIDIOC_G_CTRL, vctrl);
 139
 140         case V4L2_CID_AUDIO_VOLUME:
 141         case V4L2_CID_AUDIO_MUTE:
 142         case V4L2_CID_AUDIO_BALANCE:
 143         case V4L2_CID_AUDIO_BASS:
 144         case V4L2_CID_AUDIO_TREBLE:
 145         case V4L2_CID_AUDIO_LOUDNESS:
 146                 return ivtv_i2c_hw(itv, itv->card->hw_audio_ctrl, VIDIOC_G_CTRL, vctrl);
 147         default:
 148                 IVTV_DEBUG_IOCTL("invalid control %x\n", vctrl->id);
 149                 return -EINVAL;
 150         }
 151         return 0;
 152 }
 153
 154 static int ivtv_setup_vbi_fmt(struct ivtv *itv, enum v4l2_mpeg_stream_vbi_fmt fmt)
 155 {
 156         if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
 157                 return -EINVAL;
 158         if (atomic_read(&itv->capturing) > 0)
 159                 return -EBUSY;
 160
 161         /* First try to allocate sliced VBI buffers if needed. */
 162         if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
 163                 int i;
 164
 165                 for (i = 0; i < IVTV_VBI_FRAMES; i++) {
 166                         /* Yuck, hardcoded. Needs to be a define */
 167                         itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
 168                         if (itv->vbi.sliced_mpeg_data[i] == NULL) {
 169                                 while (--i >= 0) {
 170                                         kfree(itv->vbi.sliced_mpeg_data[i]);
 171                                         itv->vbi.sliced_mpeg_data[i] = NULL;
 172                                 }
 173                                 return -ENOMEM;
 174                         }
 175                 }
 176         }
 177
 178         itv->vbi.insert_mpeg = fmt;
 179
 180         if (itv->vbi.insert_mpeg == 0) {
 181                 return 0;
 182         }
 183         /* Need sliced data for mpeg insertion */
 184         if (get_service_set(itv->vbi.sliced_in) == 0) {
 185                 if (itv->is_60hz)
 186                         itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
 187                 else
 188                         itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
 189                 expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
 190         }
 191         return 0;
 192 }
 193
 194 int ivtv_control_ioctls(struct ivtv *itv, unsigned int cmd, void *arg)
 195 {
 196         struct v4l2_control ctrl;
 197
 198         switch (cmd) {
 199         case VIDIOC_QUERYMENU:
 200                 IVTV_DEBUG_IOCTL("VIDIOC_QUERYMENU\n");
 201                 return ivtv_querymenu(itv, arg);
 202
 203         case VIDIOC_QUERYCTRL:
 204                 return ivtv_queryctrl(itv, arg);
 205
 206         case VIDIOC_S_CTRL:
 207                 return ivtv_s_ctrl(itv, arg);
 208
 209         case VIDIOC_G_CTRL:
 210                 return ivtv_g_ctrl(itv, arg);
 211
 212         case VIDIOC_S_EXT_CTRLS:
 213         {
 214                 struct v4l2_ext_controls *c = arg;
 215
 216                 if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 217                         int i;
 218                         int err = 0;
 219
 220                         for (i = 0; i < c->count; i++) {
 221                                 ctrl.id = c->controls[i].id;
 222                                 ctrl.value = c->controls[i].value;
 223                                 err = ivtv_s_ctrl(itv, &ctrl);
 224                                 c->controls[i].value = ctrl.value;
 225                                 if (err) {
 226                                         c->error_idx = i;
 227                                         break;
 228                                 }
 229                         }
 230                         return err;
 231                 }
 232                 IVTV_DEBUG_IOCTL("VIDIOC_S_EXT_CTRLS\n");
 233                 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
 234                         static u32 freqs[3] = { 44100, 48000, 32000 };
 235                         struct cx2341x_mpeg_params p = itv->params;
 236                         int err = cx2341x_ext_ctrls(&p, atomic_read(&itv->capturing), arg, cmd);
 237                         unsigned idx;
 238
 239                         if (err)
 240                                 return err;
 241
 242                         if (p.video_encoding != itv->params.video_encoding) {
 243                                 int is_mpeg1 = p.video_encoding ==
 244                                                 V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
 245                                 struct v4l2_format fmt;
 246
 247                                 /* fix videodecoder resolution */
 248                                 fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 249                                 fmt.fmt.pix.width = itv->params.width / (is_mpeg1 ? 2 : 1);
 250                                 fmt.fmt.pix.height = itv->params.height;
 251                                 itv->video_dec_func(itv, VIDIOC_S_FMT, &fmt);
 252                         }
 253                         err = cx2341x_update(itv, ivtv_api_func, &itv->params, &p);
 254                         if (!err && itv->params.stream_vbi_fmt != p.stream_vbi_fmt) {
 255                                 err = ivtv_setup_vbi_fmt(itv, p.stream_vbi_fmt);
 256                         }
 257                         itv->params = p;
 258                         itv->dualwatch_stereo_mode = p.audio_properties & 0x0300;
 259                         idx = p.audio_properties & 0x03;
 260                         /* The audio clock of the digitizer must match the codec sample
 261                            rate otherwise you get some very strange effects. */
 262                         if (idx < sizeof(freqs))
 263                             ivtv_call_i2c_clients(itv, VIDIOC_INT_AUDIO_CLOCK_FREQ, &freqs[idx]);
 264                         return err;
 265                 }
 266                 return -EINVAL;
 267         }
 268
 269         case VIDIOC_G_EXT_CTRLS:
 270         {
 271                 struct v4l2_ext_controls *c = arg;
 272
 273                 if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 274                         int i;
 275                         int err = 0;
 276
 277                         for (i = 0; i < c->count; i++) {
 278                                 ctrl.id = c->controls[i].id;
 279                                 ctrl.value = c->controls[i].value;
 280                                 err = ivtv_g_ctrl(itv, &ctrl);
 281                                 c->controls[i].value = ctrl.value;
 282                                 if (err) {
 283                                         c->error_idx = i;
 284                                         break;
 285                                 }
 286                         }
 287                         return err;
 288                 }
 289                 IVTV_DEBUG_IOCTL("VIDIOC_G_EXT_CTRLS\n");
 290                 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 291                         return cx2341x_ext_ctrls(&itv->params, 0, arg, cmd);
 292                 return -EINVAL;
 293         }
 294
 295         case VIDIOC_TRY_EXT_CTRLS:
 296         {
 297                 struct v4l2_ext_controls *c = arg;
 298
 299                 IVTV_DEBUG_IOCTL("VIDIOC_TRY_EXT_CTRLS\n");
 300                 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 301                         return cx2341x_ext_ctrls(&itv->params, atomic_read(&itv->capturing), arg, cmd);
 302                 return -EINVAL;
 303         }
 304
 305         default:
 306                 return -EINVAL;
 307         }
 308         return 0;
 309 }