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 #include <linux/kernel.h>
  21
  22 #include "ivtv-driver.h"
  23 #include "ivtv-cards.h"
  24 #include "ivtv-ioctl.h"
  25 #include "ivtv-routing.h"
  26 #include "ivtv-i2c.h"
  27 #include "ivtv-mailbox.h"
  28 #include "ivtv-controls.h"
  29
  30 /* Must be sorted from low to high control ID! */
  31 static const u32 user_ctrls[] = {
  32         V4L2_CID_USER_CLASS,
  33         V4L2_CID_BRIGHTNESS,
  34         V4L2_CID_CONTRAST,
  35         V4L2_CID_SATURATION,
  36         V4L2_CID_HUE,
  37         V4L2_CID_AUDIO_VOLUME,
  38         V4L2_CID_AUDIO_BALANCE,
  39         V4L2_CID_AUDIO_BASS,
  40         V4L2_CID_AUDIO_TREBLE,
  41         V4L2_CID_AUDIO_MUTE,
  42         V4L2_CID_AUDIO_LOUDNESS,
  43         0
  44 };
  45
  46 static const u32 *ctrl_classes[] = {
  47         user_ctrls,
  48         cx2341x_mpeg_ctrls,
  49         NULL
  50 };
  51
  52
  53 int ivtv_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
  54 {
  55         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
  56         const char *name;
  57
  58         qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
  59         if (qctrl->id == 0)
  60                 return -EINVAL;
  61
  62         switch (qctrl->id) {
  63         /* Standard V4L2 controls */
  64         case V4L2_CID_USER_CLASS:
  65                 return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
  66         case V4L2_CID_BRIGHTNESS:
  67         case V4L2_CID_HUE:
  68         case V4L2_CID_SATURATION:
  69         case V4L2_CID_CONTRAST:
  70                 if (v4l2_subdev_call(itv->sd_video, core, queryctrl, qctrl))
  71                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  72                 return 0;
  73
  74         case V4L2_CID_AUDIO_VOLUME:
  75         case V4L2_CID_AUDIO_MUTE:
  76         case V4L2_CID_AUDIO_BALANCE:
  77         case V4L2_CID_AUDIO_BASS:
  78         case V4L2_CID_AUDIO_TREBLE:
  79         case V4L2_CID_AUDIO_LOUDNESS:
  80                 if (v4l2_subdev_call(itv->sd_audio, core, queryctrl, qctrl))
  81                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  82                 return 0;
  83
  84         default:
  85                 if (cx2341x_ctrl_query(&itv->params, qctrl))
  86                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  87                 return 0;
  88         }
  89         strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
  90         qctrl->name[sizeof(qctrl->name) - 1] = 0;
  91         return 0;
  92 }
  93
  94 int ivtv_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
  95 {
  96         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
  97         struct v4l2_queryctrl qctrl;
  98
  99         qctrl.id = qmenu->id;
 100         ivtv_queryctrl(file, fh, &qctrl);
 101         return v4l2_ctrl_query_menu(qmenu, &qctrl,
 102                         cx2341x_ctrl_get_menu(&itv->params, qmenu->id));
 103 }
 104
 105 static int ivtv_try_ctrl(struct file *file, void *fh,
 106                                         struct v4l2_ext_control *vctrl)
 107 {
 108         struct v4l2_queryctrl qctrl;
 109         const char **menu_items = NULL;
 110         int err;
 111
 112         qctrl.id = vctrl->id;
 113         err = ivtv_queryctrl(file, fh, &qctrl);
 114         if (err)
 115                 return err;
 116         if (qctrl.type == V4L2_CTRL_TYPE_MENU)
 117                 menu_items = v4l2_ctrl_get_menu(qctrl.id);
 118         return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
 119 }
 120
 121 static int ivtv_s_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
 122 {
 123         switch (vctrl->id) {
 124                 /* Standard V4L2 controls */
 125         case V4L2_CID_BRIGHTNESS:
 126         case V4L2_CID_HUE:
 127         case V4L2_CID_SATURATION:
 128         case V4L2_CID_CONTRAST:
 129                 return v4l2_subdev_call(itv->sd_video, core, s_ctrl, vctrl);
 130
 131         case V4L2_CID_AUDIO_VOLUME:
 132         case V4L2_CID_AUDIO_MUTE:
 133         case V4L2_CID_AUDIO_BALANCE:
 134         case V4L2_CID_AUDIO_BASS:
 135         case V4L2_CID_AUDIO_TREBLE:
 136         case V4L2_CID_AUDIO_LOUDNESS:
 137                 return v4l2_subdev_call(itv->sd_audio, core, s_ctrl, vctrl);
 138
 139         default:
 140                 IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
 141                 return -EINVAL;
 142         }
 143         return 0;
 144 }
 145
 146 static int ivtv_g_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
 147 {
 148         switch (vctrl->id) {
 149                 /* Standard V4L2 controls */
 150         case V4L2_CID_BRIGHTNESS:
 151         case V4L2_CID_HUE:
 152         case V4L2_CID_SATURATION:
 153         case V4L2_CID_CONTRAST:
 154                 return v4l2_subdev_call(itv->sd_video, core, g_ctrl, vctrl);
 155
 156         case V4L2_CID_AUDIO_VOLUME:
 157         case V4L2_CID_AUDIO_MUTE:
 158         case V4L2_CID_AUDIO_BALANCE:
 159         case V4L2_CID_AUDIO_BASS:
 160         case V4L2_CID_AUDIO_TREBLE:
 161         case V4L2_CID_AUDIO_LOUDNESS:
 162                 return v4l2_subdev_call(itv->sd_audio, core, g_ctrl, vctrl);
 163         default:
 164                 IVTV_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
 165                 return -EINVAL;
 166         }
 167         return 0;
 168 }
 169
 170 static int ivtv_setup_vbi_fmt(struct ivtv *itv, enum v4l2_mpeg_stream_vbi_fmt fmt)
 171 {
 172         if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
 173                 return -EINVAL;
 174         if (atomic_read(&itv->capturing) > 0)
 175                 return -EBUSY;
 176
 177         /* First try to allocate sliced VBI buffers if needed. */
 178         if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
 179                 int i;
 180
 181                 for (i = 0; i < IVTV_VBI_FRAMES; i++) {
 182                         /* Yuck, hardcoded. Needs to be a define */
 183                         itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
 184                         if (itv->vbi.sliced_mpeg_data[i] == NULL) {
 185                                 while (--i >= 0) {
 186                                         kfree(itv->vbi.sliced_mpeg_data[i]);
 187                                         itv->vbi.sliced_mpeg_data[i] = NULL;
 188                                 }
 189                                 return -ENOMEM;
 190                         }
 191                 }
 192         }
 193
 194         itv->vbi.insert_mpeg = fmt;
 195
 196         if (itv->vbi.insert_mpeg == 0) {
 197                 return 0;
 198         }
 199         /* Need sliced data for mpeg insertion */
 200         if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
 201                 if (itv->is_60hz)
 202                         itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
 203                 else
 204                         itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
 205                 ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
 206         }
 207         return 0;
 208 }
 209
 210 int ivtv_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 211 {
 212         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 213         struct v4l2_control ctrl;
 214
 215         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 216                 int i;
 217                 int err = 0;
 218
 219                 for (i = 0; i < c->count; i++) {
 220                         ctrl.id = c->controls[i].id;
 221                         ctrl.value = c->controls[i].value;
 222                         err = ivtv_g_ctrl(itv, &ctrl);
 223                         c->controls[i].value = ctrl.value;
 224                         if (err) {
 225                                 c->error_idx = i;
 226                                 break;
 227                         }
 228                 }
 229                 return err;
 230         }
 231         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 232                 return cx2341x_ext_ctrls(&itv->params, 0, c, VIDIOC_G_EXT_CTRLS);
 233         return -EINVAL;
 234 }
 235
 236 int ivtv_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 237 {
 238         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 239         struct v4l2_control ctrl;
 240
 241         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 242                 int i;
 243                 int err = 0;
 244
 245                 for (i = 0; i < c->count; i++) {
 246                         ctrl.id = c->controls[i].id;
 247                         ctrl.value = c->controls[i].value;
 248                         err = ivtv_s_ctrl(itv, &ctrl);
 249                         c->controls[i].value = ctrl.value;
 250                         if (err) {
 251                                 c->error_idx = i;
 252                                 break;
 253                         }
 254                 }
 255                 return err;
 256         }
 257         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
 258                 static u32 freqs[3] = { 44100, 48000, 32000 };
 259                 struct cx2341x_mpeg_params p = itv->params;
 260                 int err = cx2341x_ext_ctrls(&p, atomic_read(&itv->capturing), c, VIDIOC_S_EXT_CTRLS);
 261                 unsigned idx;
 262
 263                 if (err)
 264                         return err;
 265
 266                 if (p.video_encoding != itv->params.video_encoding) {
 267                         int is_mpeg1 = p.video_encoding ==
 268                                 V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
 269                         struct v4l2_format fmt;
 270
 271                         /* fix videodecoder resolution */
 272                         fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 273                         fmt.fmt.pix.width = itv->params.width / (is_mpeg1 ? 2 : 1);
 274                         fmt.fmt.pix.height = itv->params.height;
 275                         v4l2_subdev_call(itv->sd_video, video, s_fmt, &fmt);
 276                 }
 277                 err = cx2341x_update(itv, ivtv_api_func, &itv->params, &p);
 278                 if (!err && itv->params.stream_vbi_fmt != p.stream_vbi_fmt)
 279                         err = ivtv_setup_vbi_fmt(itv, p.stream_vbi_fmt);
 280                 itv->params = p;
 281                 itv->dualwatch_stereo_mode = p.audio_properties & 0x0300;
 282                 idx = p.audio_properties & 0x03;
 283                 /* The audio clock of the digitizer must match the codec sample
 284                    rate otherwise you get some very strange effects. */
 285                 if (idx < ARRAY_SIZE(freqs))
 286                         ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
 287                 return err;
 288         }
 289         return -EINVAL;
 290 }
 291
 292 int ivtv_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 293 {
 294         struct ivtv *itv = ((struct ivtv_open_id *)fh)->itv;
 295
 296         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 297                 int i;
 298                 int err = 0;
 299
 300                 for (i = 0; i < c->count; i++) {
 301                         err = ivtv_try_ctrl(file, fh, &c->controls[i]);
 302                         if (err) {
 303                                 c->error_idx = i;
 304                                 break;
 305                         }
 306                 }
 307                 return err;
 308         }
 309         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 310                 return cx2341x_ext_ctrls(&itv->params, atomic_read(&itv->capturing), c, VIDIOC_TRY_EXT_CTRLS);
 311         return -EINVAL;
 312 }