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_USER_CLASS:
  64                 return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
  65         case V4L2_CID_BRIGHTNESS:
  66         case V4L2_CID_HUE:
  67         case V4L2_CID_SATURATION:
  68         case V4L2_CID_CONTRAST:
  69                 if (v4l2_subdev_call(itv->sd_video, core, queryctrl, qctrl))
  70                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  71                 return 0;
  72
  73         case V4L2_CID_AUDIO_VOLUME:
  74         case V4L2_CID_AUDIO_MUTE:
  75         case V4L2_CID_AUDIO_BALANCE:
  76         case V4L2_CID_AUDIO_BASS:
  77         case V4L2_CID_AUDIO_TREBLE:
  78         case V4L2_CID_AUDIO_LOUDNESS:
  79                 if (v4l2_subdev_call(itv->sd_audio, core, queryctrl, qctrl))
  80                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  81                 return 0;
  82
  83         default:
  84                 if (cx2341x_ctrl_query(&itv->params, qctrl))
  85                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  86                 return 0;
  87         }
  88         strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
  89         qctrl->name[sizeof(qctrl->name) - 1] = 0;
  90         return 0;
  91 }
  92
  93 int ivtv_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
  94 {
  95         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
  96         struct v4l2_queryctrl qctrl;
  97
  98         qctrl.id = qmenu->id;
  99         ivtv_queryctrl(file, fh, &qctrl);
 100         return v4l2_ctrl_query_menu(qmenu, &qctrl,
 101                         cx2341x_ctrl_get_menu(&itv->params, qmenu->id));
 102 }
 103
 104 static int ivtv_try_ctrl(struct file *file, void *fh,
 105                                         struct v4l2_ext_control *vctrl)
 106 {
 107         struct v4l2_queryctrl qctrl;
 108         const char **menu_items = NULL;
 109         int err;
 110
 111         qctrl.id = vctrl->id;
 112         err = ivtv_queryctrl(file, fh, &qctrl);
 113         if (err)
 114                 return err;
 115         if (qctrl.type == V4L2_CTRL_TYPE_MENU)
 116                 menu_items = v4l2_ctrl_get_menu(qctrl.id);
 117         return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
 118 }
 119
 120 static int ivtv_s_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
 121 {
 122         switch (vctrl->id) {
 123                 /* Standard V4L2 controls */
 124         case V4L2_CID_BRIGHTNESS:
 125         case V4L2_CID_HUE:
 126         case V4L2_CID_SATURATION:
 127         case V4L2_CID_CONTRAST:
 128                 return v4l2_subdev_call(itv->sd_video, core, s_ctrl, vctrl);
 129
 130         case V4L2_CID_AUDIO_VOLUME:
 131         case V4L2_CID_AUDIO_MUTE:
 132         case V4L2_CID_AUDIO_BALANCE:
 133         case V4L2_CID_AUDIO_BASS:
 134         case V4L2_CID_AUDIO_TREBLE:
 135         case V4L2_CID_AUDIO_LOUDNESS:
 136                 return v4l2_subdev_call(itv->sd_audio, core, s_ctrl, vctrl);
 137
 138         default:
 139                 IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
 140                 return -EINVAL;
 141         }
 142         return 0;
 143 }
 144
 145 static int ivtv_g_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
 146 {
 147         switch (vctrl->id) {
 148                 /* Standard V4L2 controls */
 149         case V4L2_CID_BRIGHTNESS:
 150         case V4L2_CID_HUE:
 151         case V4L2_CID_SATURATION:
 152         case V4L2_CID_CONTRAST:
 153                 return v4l2_subdev_call(itv->sd_video, core, g_ctrl, vctrl);
 154
 155         case V4L2_CID_AUDIO_VOLUME:
 156         case V4L2_CID_AUDIO_MUTE:
 157         case V4L2_CID_AUDIO_BALANCE:
 158         case V4L2_CID_AUDIO_BASS:
 159         case V4L2_CID_AUDIO_TREBLE:
 160         case V4L2_CID_AUDIO_LOUDNESS:
 161                 return v4l2_subdev_call(itv->sd_audio, core, g_ctrl, vctrl);
 162         default:
 163                 IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
 164                 return -EINVAL;
 165         }
 166         return 0;
 167 }
 168
 169 static int ivtv_setup_vbi_fmt(struct ivtv *itv, enum v4l2_mpeg_stream_vbi_fmt fmt)
 170 {
 171         if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
 172                 return -EINVAL;
 173         if (atomic_read(&itv->capturing) > 0)
 174                 return -EBUSY;
 175
 176         /* First try to allocate sliced VBI buffers if needed. */
 177         if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
 178                 int i;
 179
 180                 for (i = 0; i < IVTV_VBI_FRAMES; i++) {
 181                         /* Yuck, hardcoded. Needs to be a define */
 182                         itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
 183                         if (itv->vbi.sliced_mpeg_data[i] == NULL) {
 184                                 while (--i >= 0) {
 185                                         kfree(itv->vbi.sliced_mpeg_data[i]);
 186                                         itv->vbi.sliced_mpeg_data[i] = NULL;
 187                                 }
 188                                 return -ENOMEM;
 189                         }
 190                 }
 191         }
 192
 193         itv->vbi.insert_mpeg = fmt;
 194
 195         if (itv->vbi.insert_mpeg == 0) {
 196                 return 0;
 197         }
 198         /* Need sliced data for mpeg insertion */
 199         if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
 200                 if (itv->is_60hz)
 201                         itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
 202                 else
 203                         itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
 204                 ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
 205         }
 206         return 0;
 207 }
 208
 209 int ivtv_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 210 {
 211         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 212         struct v4l2_control ctrl;
 213
 214         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 215                 int i;
 216                 int err = 0;
 217
 218                 for (i = 0; i < c->count; i++) {
 219                         ctrl.id = c->controls[i].id;
 220                         ctrl.value = c->controls[i].value;
 221                         err = ivtv_g_ctrl(itv, &ctrl);
 222                         c->controls[i].value = ctrl.value;
 223                         if (err) {
 224                                 c->error_idx = i;
 225                                 break;
 226                         }
 227                 }
 228                 return err;
 229         }
 230         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 231                 return cx2341x_ext_ctrls(&itv->params, 0, c, VIDIOC_G_EXT_CTRLS);
 232         return -EINVAL;
 233 }
 234
 235 int ivtv_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 236 {
 237         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 238         struct v4l2_control ctrl;
 239
 240         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 241                 int i;
 242                 int err = 0;
 243
 244                 for (i = 0; i < c->count; i++) {
 245                         ctrl.id = c->controls[i].id;
 246                         ctrl.value = c->controls[i].value;
 247                         err = ivtv_s_ctrl(itv, &ctrl);
 248                         c->controls[i].value = ctrl.value;
 249                         if (err) {
 250                                 c->error_idx = i;
 251                                 break;
 252                         }
 253                 }
 254                 return err;
 255         }
 256         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
 257                 static u32 freqs[3] = { 44100, 48000, 32000 };
 258                 struct cx2341x_mpeg_params p = itv->params;
 259                 int err = cx2341x_ext_ctrls(&p, atomic_read(&itv->capturing), c, VIDIOC_S_EXT_CTRLS);
 260                 unsigned idx;
 261
 262                 if (err)
 263                         return err;
 264
 265                 if (p.video_encoding != itv->params.video_encoding) {
 266                         int is_mpeg1 = p.video_encoding ==
 267                                 V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
 268                         struct v4l2_format fmt;
 269
 270                         /* fix videodecoder resolution */
 271                         fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 272                         fmt.fmt.pix.width = itv->params.width / (is_mpeg1 ? 2 : 1);
 273                         fmt.fmt.pix.height = itv->params.height;
 274                         v4l2_subdev_call(itv->sd_video, video, s_fmt, &fmt);
 275                 }
 276                 err = cx2341x_update(itv, ivtv_api_func, &itv->params, &p);
 277                 if (!err && itv->params.stream_vbi_fmt != p.stream_vbi_fmt)
 278                         err = ivtv_setup_vbi_fmt(itv, p.stream_vbi_fmt);
 279                 itv->params = p;
 280                 itv->dualwatch_stereo_mode = p.audio_properties & 0x0300;
 281                 idx = p.audio_properties & 0x03;
 282                 /* The audio clock of the digitizer must match the codec sample
 283                    rate otherwise you get some very strange effects. */
 284                 if (idx < sizeof(freqs))
 285                         ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
 286                 return err;
 287         }
 288         return -EINVAL;
 289 }
 290
 291 int ivtv_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 292 {
 293         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 294
 295         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 296                 int i;
 297                 int err = 0;
 298
 299                 for (i = 0; i < c->count; i++) {
 300                         err = ivtv_try_ctrl(file, fh, &c->controls[i]);
 301                         if (err) {
 302                                 c->error_idx = i;
 303                                 break;
 304                         }
 305                 }
 306                 return err;
 307         }
 308         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 309                 return cx2341x_ext_ctrls(&itv->params, atomic_read(&itv->capturing), c, VIDIOC_TRY_EXT_CTRLS);
 310         return -EINVAL;
 311 }