drivers/media/video/cx18/cx18-controls.c

   1 /*
   2  *  cx18 ioctl control functions
   3  *
   4  *  Derived from ivtv-controls.c
   5  *
   6  *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  21  *  02111-1307  USA
  22  */
  23
  24 #include "cx18-driver.h"
  25 #include "cx18-av-core.h"
  26 #include "cx18-cards.h"
  27 #include "cx18-ioctl.h"
  28 #include "cx18-audio.h"
  29 #include "cx18-i2c.h"
  30 #include "cx18-mailbox.h"
  31 #include "cx18-controls.h"
  32
  33 static const u32 user_ctrls[] = {
  34         V4L2_CID_USER_CLASS,
  35         V4L2_CID_BRIGHTNESS,
  36         V4L2_CID_CONTRAST,
  37         V4L2_CID_SATURATION,
  38         V4L2_CID_HUE,
  39         V4L2_CID_AUDIO_VOLUME,
  40         V4L2_CID_AUDIO_BALANCE,
  41         V4L2_CID_AUDIO_BASS,
  42         V4L2_CID_AUDIO_TREBLE,
  43         V4L2_CID_AUDIO_MUTE,
  44         V4L2_CID_AUDIO_LOUDNESS,
  45         0
  46 };
  47
  48 static const u32 *ctrl_classes[] = {
  49         user_ctrls,
  50         cx2341x_mpeg_ctrls,
  51         NULL
  52 };
  53
  54 static int cx18_queryctrl(struct cx18 *cx, struct v4l2_queryctrl *qctrl)
  55 {
  56         const char *name;
  57
  58         CX18_DEBUG_IOCTL("VIDIOC_QUERYCTRL(%08x)\n", qctrl->id);
  59
  60         qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
  61         if (qctrl->id == 0)
  62                 return -EINVAL;
  63
  64         switch (qctrl->id) {
  65         /* Standard V4L2 controls */
  66         case V4L2_CID_BRIGHTNESS:
  67         case V4L2_CID_HUE:
  68         case V4L2_CID_SATURATION:
  69         case V4L2_CID_CONTRAST:
  70                 if (cx18_av_cmd(cx, VIDIOC_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 (cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_QUERYCTRL, qctrl))
  81                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  82                 return 0;
  83
  84         default:
  85                 if (cx2341x_ctrl_query(&cx->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 static int cx18_querymenu(struct cx18 *cx, struct v4l2_querymenu *qmenu)
  95 {
  96         struct v4l2_queryctrl qctrl;
  97
  98         qctrl.id = qmenu->id;
  99         cx18_queryctrl(cx, &qctrl);
 100         return v4l2_ctrl_query_menu(qmenu, &qctrl, cx2341x_ctrl_get_menu(qmenu->id));
 101 }
 102
 103 static int cx18_s_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
 104 {
 105         s32 v = vctrl->value;
 106
 107         CX18_DEBUG_IOCTL("VIDIOC_S_CTRL(%08x, %x)\n", vctrl->id, v);
 108
 109         switch (vctrl->id) {
 110                 /* Standard V4L2 controls */
 111         case V4L2_CID_BRIGHTNESS:
 112         case V4L2_CID_HUE:
 113         case V4L2_CID_SATURATION:
 114         case V4L2_CID_CONTRAST:
 115                 return cx18_av_cmd(cx, VIDIOC_S_CTRL, vctrl);
 116
 117         case V4L2_CID_AUDIO_VOLUME:
 118         case V4L2_CID_AUDIO_MUTE:
 119         case V4L2_CID_AUDIO_BALANCE:
 120         case V4L2_CID_AUDIO_BASS:
 121         case V4L2_CID_AUDIO_TREBLE:
 122         case V4L2_CID_AUDIO_LOUDNESS:
 123                 return cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_S_CTRL, vctrl);
 124
 125         default:
 126                 CX18_DEBUG_IOCTL("invalid control %x\n", vctrl->id);
 127                 return -EINVAL;
 128         }
 129         return 0;
 130 }
 131
 132 static int cx18_g_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
 133 {
 134         CX18_DEBUG_IOCTL("VIDIOC_G_CTRL(%08x)\n", vctrl->id);
 135
 136         switch (vctrl->id) {
 137                 /* Standard V4L2 controls */
 138         case V4L2_CID_BRIGHTNESS:
 139         case V4L2_CID_HUE:
 140         case V4L2_CID_SATURATION:
 141         case V4L2_CID_CONTRAST:
 142                 return cx18_av_cmd(cx, VIDIOC_G_CTRL, vctrl);
 143
 144         case V4L2_CID_AUDIO_VOLUME:
 145         case V4L2_CID_AUDIO_MUTE:
 146         case V4L2_CID_AUDIO_BALANCE:
 147         case V4L2_CID_AUDIO_BASS:
 148         case V4L2_CID_AUDIO_TREBLE:
 149         case V4L2_CID_AUDIO_LOUDNESS:
 150                 return cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_G_CTRL, vctrl);
 151         default:
 152                 CX18_DEBUG_IOCTL("invalid control %x\n", vctrl->id);
 153                 return -EINVAL;
 154         }
 155         return 0;
 156 }
 157
 158 static int cx18_setup_vbi_fmt(struct cx18 *cx, enum v4l2_mpeg_stream_vbi_fmt fmt)
 159 {
 160         if (!(cx->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
 161                 return -EINVAL;
 162         if (atomic_read(&cx->ana_capturing) > 0)
 163                 return -EBUSY;
 164
 165         /* First try to allocate sliced VBI buffers if needed. */
 166         if (fmt && cx->vbi.sliced_mpeg_data[0] == NULL) {
 167                 int i;
 168
 169                 for (i = 0; i < CX18_VBI_FRAMES; i++) {
 170                         /* Yuck, hardcoded. Needs to be a define */
 171                         cx->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
 172                         if (cx->vbi.sliced_mpeg_data[i] == NULL) {
 173                                 while (--i >= 0) {
 174                                         kfree(cx->vbi.sliced_mpeg_data[i]);
 175                                         cx->vbi.sliced_mpeg_data[i] = NULL;
 176                                 }
 177                                 return -ENOMEM;
 178                         }
 179                 }
 180         }
 181
 182         cx->vbi.insert_mpeg = fmt;
 183
 184         if (cx->vbi.insert_mpeg == 0)
 185                 return 0;
 186         /* Need sliced data for mpeg insertion */
 187         if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
 188                 if (cx->is_60hz)
 189                         cx->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
 190                 else
 191                         cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
 192                 cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
 193         }
 194         return 0;
 195 }
 196
 197 int cx18_control_ioctls(struct cx18 *cx, unsigned int cmd, void *arg)
 198 {
 199         struct v4l2_control ctrl;
 200
 201         switch (cmd) {
 202         case VIDIOC_QUERYMENU:
 203                 CX18_DEBUG_IOCTL("VIDIOC_QUERYMENU\n");
 204                 return cx18_querymenu(cx, arg);
 205
 206         case VIDIOC_QUERYCTRL:
 207                 return cx18_queryctrl(cx, arg);
 208
 209         case VIDIOC_S_CTRL:
 210                 return cx18_s_ctrl(cx, arg);
 211
 212         case VIDIOC_G_CTRL:
 213                 return cx18_g_ctrl(cx, arg);
 214
 215         case VIDIOC_S_EXT_CTRLS:
 216         {
 217                 struct v4l2_ext_controls *c = arg;
 218
 219                 if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 220                         int i;
 221                         int err = 0;
 222
 223                         for (i = 0; i < c->count; i++) {
 224                                 ctrl.id = c->controls[i].id;
 225                                 ctrl.value = c->controls[i].value;
 226                                 err = cx18_s_ctrl(cx, &ctrl);
 227                                 c->controls[i].value = ctrl.value;
 228                                 if (err) {
 229                                         c->error_idx = i;
 230                                         break;
 231                                 }
 232                         }
 233                         return err;
 234                 }
 235                 CX18_DEBUG_IOCTL("VIDIOC_S_EXT_CTRLS\n");
 236                 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
 237                         struct cx2341x_mpeg_params p = cx->params;
 238                         int err = cx2341x_ext_ctrls(&p, atomic_read(&cx->ana_capturing), arg, cmd);
 239
 240                         if (err)
 241                                 return err;
 242
 243                         if (p.video_encoding != cx->params.video_encoding) {
 244                                 int is_mpeg1 = p.video_encoding ==
 245                                                 V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
 246                                 struct v4l2_format fmt;
 247
 248                                 /* fix videodecoder resolution */
 249                                 fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 250                                 fmt.fmt.pix.width = cx->params.width / (is_mpeg1 ? 2 : 1);
 251                                 fmt.fmt.pix.height = cx->params.height;
 252                                 cx18_av_cmd(cx, VIDIOC_S_FMT, &fmt);
 253                         }
 254                         err = cx2341x_update(cx, cx18_api_func, &cx->params, &p);
 255                         if (!err && cx->params.stream_vbi_fmt != p.stream_vbi_fmt)
 256                                 err = cx18_setup_vbi_fmt(cx, p.stream_vbi_fmt);
 257                         cx->params = p;
 258                         cx->dualwatch_stereo_mode = p.audio_properties & 0x0300;
 259                         cx18_audio_set_audio_clock_freq(cx, p.audio_properties & 0x03);
 260                         return err;
 261                 }
 262                 return -EINVAL;
 263         }
 264
 265         case VIDIOC_G_EXT_CTRLS:
 266         {
 267                 struct v4l2_ext_controls *c = arg;
 268
 269                 if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 270                         int i;
 271                         int err = 0;
 272
 273                         for (i = 0; i < c->count; i++) {
 274                                 ctrl.id = c->controls[i].id;
 275                                 ctrl.value = c->controls[i].value;
 276                                 err = cx18_g_ctrl(cx, &ctrl);
 277                                 c->controls[i].value = ctrl.value;
 278                                 if (err) {
 279                                         c->error_idx = i;
 280                                         break;
 281                                 }
 282                         }
 283                         return err;
 284                 }
 285                 CX18_DEBUG_IOCTL("VIDIOC_G_EXT_CTRLS\n");
 286                 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 287                         return cx2341x_ext_ctrls(&cx->params, 0, arg, cmd);
 288                 return -EINVAL;
 289         }
 290
 291         case VIDIOC_TRY_EXT_CTRLS:
 292         {
 293                 struct v4l2_ext_controls *c = arg;
 294
 295                 CX18_DEBUG_IOCTL("VIDIOC_TRY_EXT_CTRLS\n");
 296                 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 297                         return cx2341x_ext_ctrls(&cx->params,
 298                                         atomic_read(&cx->ana_capturing), arg, cmd);
 299                 return -EINVAL;
 300         }
 301
 302         default:
 303                 return -EINVAL;
 304         }
 305         return 0;
 306 }