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 /* Must be sorted from low to high control ID! */
  30 static const u32 user_ctrls[] = {
  31         V4L2_CID_USER_CLASS,
  32         V4L2_CID_BRIGHTNESS,
  33         V4L2_CID_CONTRAST,
  34         V4L2_CID_SATURATION,
  35         V4L2_CID_HUE,
  36         V4L2_CID_AUDIO_VOLUME,
  37         V4L2_CID_AUDIO_BALANCE,
  38         V4L2_CID_AUDIO_BASS,
  39         V4L2_CID_AUDIO_TREBLE,
  40         V4L2_CID_AUDIO_MUTE,
  41         V4L2_CID_AUDIO_LOUDNESS,
  42         0
  43 };
  44
  45 static const u32 *ctrl_classes[] = {
  46         user_ctrls,
  47         cx2341x_mpeg_ctrls,
  48         NULL
  49 };
  50
  51
  52 int ivtv_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
  53 {
  54         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
  55         const char *name;
  56
  57         qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
  58         if (qctrl->id == 0)
  59                 return -EINVAL;
  60
  61         switch (qctrl->id) {
  62         /* Standard V4L2 controls */
  63         case V4L2_CID_BRIGHTNESS:
  64         case V4L2_CID_HUE:
  65         case V4L2_CID_SATURATION:
  66         case V4L2_CID_CONTRAST:
  67                 if (v4l2_subdev_call(itv->sd_video, core, queryctrl, qctrl))
  68                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  69                 return 0;
  70
  71         case V4L2_CID_AUDIO_VOLUME:
  72         case V4L2_CID_AUDIO_MUTE:
  73         case V4L2_CID_AUDIO_BALANCE:
  74         case V4L2_CID_AUDIO_BASS:
  75         case V4L2_CID_AUDIO_TREBLE:
  76         case V4L2_CID_AUDIO_LOUDNESS:
  77                 if (v4l2_subdev_call(itv->sd_audio, core, queryctrl, qctrl))
  78                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  79                 return 0;
  80
  81         default:
  82                 if (cx2341x_ctrl_query(&itv->params, qctrl))
  83                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  84                 return 0;
  85         }
  86         strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
  87         qctrl->name[sizeof(qctrl->name) - 1] = 0;
  88         return 0;
  89 }
  90
  91 int ivtv_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
  92 {
  93         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
  94         struct v4l2_queryctrl qctrl;
  95
  96         qctrl.id = qmenu->id;
  97         ivtv_queryctrl(file, fh, &qctrl);
  98         return v4l2_ctrl_query_menu(qmenu, &qctrl,
  99                         cx2341x_ctrl_get_menu(&itv->params, qmenu->id));
 100 }
 101
 102 static int ivtv_try_ctrl(struct file *file, void *fh,
 103                                         struct v4l2_ext_control *vctrl)
 104 {
 105         struct v4l2_queryctrl qctrl;
 106         const char **menu_items = NULL;
 107         int err;
 108
 109         qctrl.id = vctrl->id;
 110         err = ivtv_queryctrl(file, fh, &qctrl);
 111         if (err)
 112                 return err;
 113         if (qctrl.type == V4L2_CTRL_TYPE_MENU)
 114                 menu_items = v4l2_ctrl_get_menu(qctrl.id);
 115         return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
 116 }
 117
 118 static int ivtv_s_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
 119 {
 120         switch (vctrl->id) {
 121                 /* Standard V4L2 controls */
 122         case V4L2_CID_BRIGHTNESS:
 123         case V4L2_CID_HUE:
 124         case V4L2_CID_SATURATION:
 125         case V4L2_CID_CONTRAST:
 126                 return v4l2_subdev_call(itv->sd_video, core, s_ctrl, vctrl);
 127
 128         case V4L2_CID_AUDIO_VOLUME:
 129         case V4L2_CID_AUDIO_MUTE:
 130         case V4L2_CID_AUDIO_BALANCE:
 131         case V4L2_CID_AUDIO_BASS:
 132         case V4L2_CID_AUDIO_TREBLE:
 133         case V4L2_CID_AUDIO_LOUDNESS:
 134                 return v4l2_subdev_call(itv->sd_audio, core, s_ctrl, vctrl);
 135
 136         default:
 137                 IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
 138                 return -EINVAL;
 139         }
 140         return 0;
 141 }
 142
 143 static int ivtv_g_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
 144 {
 145         switch (vctrl->id) {
 146                 /* Standard V4L2 controls */
 147         case V4L2_CID_BRIGHTNESS:
 148         case V4L2_CID_HUE:
 149         case V4L2_CID_SATURATION:
 150         case V4L2_CID_CONTRAST:
 151                 return v4l2_subdev_call(itv->sd_video, core, g_ctrl, vctrl);
 152
 153         case V4L2_CID_AUDIO_VOLUME:
 154         case V4L2_CID_AUDIO_MUTE:
 155         case V4L2_CID_AUDIO_BALANCE:
 156         case V4L2_CID_AUDIO_BASS:
 157         case V4L2_CID_AUDIO_TREBLE:
 158         case V4L2_CID_AUDIO_LOUDNESS:
 159                 return v4l2_subdev_call(itv->sd_audio, core, g_ctrl, vctrl);
 160         default:
 161                 IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
 162                 return -EINVAL;
 163         }
 164         return 0;
 165 }
 166
 167 static int ivtv_setup_vbi_fmt(struct ivtv *itv, enum v4l2_mpeg_stream_vbi_fmt fmt)
 168 {
 169         if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
 170                 return -EINVAL;
 171         if (atomic_read(&itv->capturing) > 0)
 172                 return -EBUSY;
 173
 174         /* First try to allocate sliced VBI buffers if needed. */
 175         if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
 176                 int i;
 177
 178                 for (i = 0; i < IVTV_VBI_FRAMES; i++) {
 179                         /* Yuck, hardcoded. Needs to be a define */
 180                         itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
 181                         if (itv->vbi.sliced_mpeg_data[i] == NULL) {
 182                                 while (--i >= 0) {
 183                                         kfree(itv->vbi.sliced_mpeg_data[i]);
 184                                         itv->vbi.sliced_mpeg_data[i] = NULL;
 185                                 }
 186                                 return -ENOMEM;
 187                         }
 188                 }
 189         }
 190
 191         itv->vbi.insert_mpeg = fmt;
 192
 193         if (itv->vbi.insert_mpeg == 0) {
 194                 return 0;
 195         }
 196         /* Need sliced data for mpeg insertion */
 197         if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
 198                 if (itv->is_60hz)
 199                         itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
 200                 else
 201                         itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
 202                 ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
 203         }
 204         return 0;
 205 }
 206
 207 int ivtv_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 208 {
 209         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 210         struct v4l2_control ctrl;
 211
 212         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 213                 int i;
 214                 int err = 0;
 215
 216                 for (i = 0; i < c->count; i++) {
 217                         ctrl.id = c->controls[i].id;
 218                         ctrl.value = c->controls[i].value;
 219                         err = ivtv_g_ctrl(itv, &ctrl);
 220                         c->controls[i].value = ctrl.value;
 221                         if (err) {
 222                                 c->error_idx = i;
 223                                 break;
 224                         }
 225                 }
 226                 return err;
 227         }
 228         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 229                 return cx2341x_ext_ctrls(&itv->params, 0, c, VIDIOC_G_EXT_CTRLS);
 230         return -EINVAL;
 231 }
 232
 233 int ivtv_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 234 {
 235         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 236         struct v4l2_control ctrl;
 237
 238         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 239                 int i;
 240                 int err = 0;
 241
 242                 for (i = 0; i < c->count; i++) {
 243                         ctrl.id = c->controls[i].id;
 244                         ctrl.value = c->controls[i].value;
 245                         err = ivtv_s_ctrl(itv, &ctrl);
 246                         c->controls[i].value = ctrl.value;
 247                         if (err) {
 248                                 c->error_idx = i;
 249                                 break;
 250                         }
 251                 }
 252                 return err;
 253         }
 254         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
 255                 static u32 freqs[3] = { 44100, 48000, 32000 };
 256                 struct cx2341x_mpeg_params p = itv->params;
 257                 int err = cx2341x_ext_ctrls(&p, atomic_read(&itv->capturing), c, VIDIOC_S_EXT_CTRLS);
 258                 unsigned idx;
 259
 260                 if (err)
 261                         return err;
 262
 263                 if (p.video_encoding != itv->params.video_encoding) {
 264                         int is_mpeg1 = p.video_encoding ==
 265                                 V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
 266                         struct v4l2_format fmt;
 267
 268                         /* fix videodecoder resolution */
 269                         fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 270                         fmt.fmt.pix.width = itv->params.width / (is_mpeg1 ? 2 : 1);
 271                         fmt.fmt.pix.height = itv->params.height;
 272                         v4l2_subdev_call(itv->sd_video, video, s_fmt, &fmt);
 273                 }
 274                 err = cx2341x_update(itv, ivtv_api_func, &itv->params, &p);
 275                 if (!err && itv->params.stream_vbi_fmt != p.stream_vbi_fmt)
 276                         err = ivtv_setup_vbi_fmt(itv, p.stream_vbi_fmt);
 277                 itv->params = p;
 278                 itv->dualwatch_stereo_mode = p.audio_properties & 0x0300;
 279                 idx = p.audio_properties & 0x03;
 280                 /* The audio clock of the digitizer must match the codec sample
 281                    rate otherwise you get some very strange effects. */
 282                 if (idx < sizeof(freqs))
 283                         ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
 284                 return err;
 285         }
 286         return -EINVAL;
 287 }
 288
 289 int ivtv_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 290 {
 291         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 292
 293         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 294                 int i;
 295                 int err = 0;
 296
 297                 for (i = 0; i < c->count; i++) {
 298                         err = ivtv_try_ctrl(file, fh, &c->controls[i]);
 299                         if (err) {
 300                                 c->error_idx = i;
 301                                 break;
 302                         }
 303                 }
 304                 return err;
 305         }
 306         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 307                 return cx2341x_ext_ctrls(&itv->params, atomic_read(&itv->capturing), c, VIDIOC_TRY_EXT_CTRLS);
 308         return -EINVAL;
 309 }