SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 int cx18_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
  55 {
  56         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
  57         const char *name;
  58
  59         qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
  60         if (qctrl->id == 0)
  61                 return -EINVAL;
  62
  63         switch (qctrl->id) {
  64         /* Standard V4L2 controls */
  65         case V4L2_CID_BRIGHTNESS:
  66         case V4L2_CID_HUE:
  67         case V4L2_CID_SATURATION:
  68         case V4L2_CID_CONTRAST:
  69                 if (cx18_av_cmd(cx, VIDIOC_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 (cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_QUERYCTRL, qctrl))
  80                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
  81                 return 0;
  82
  83         default:
  84                 if (cx2341x_ctrl_query(&cx->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 cx18_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
  94 {
  95         struct v4l2_queryctrl qctrl;
  96
  97         qctrl.id = qmenu->id;
  98         cx18_queryctrl(file, fh, &qctrl);
  99         return v4l2_ctrl_query_menu(qmenu, &qctrl, cx2341x_ctrl_get_menu(qmenu->id));
 100 }
 101
 102 int cx18_s_ctrl(struct file *file, void *fh, struct v4l2_control *vctrl)
 103 {
 104         struct cx18_open_id *id = fh;
 105         struct cx18 *cx = id->cx;
 106         int ret;
 107
 108         ret = v4l2_prio_check(&cx->prio, &id->prio);
 109         if (ret)
 110                 return ret;
 111
 112         switch (vctrl->id) {
 113                 /* Standard V4L2 controls */
 114         case V4L2_CID_BRIGHTNESS:
 115         case V4L2_CID_HUE:
 116         case V4L2_CID_SATURATION:
 117         case V4L2_CID_CONTRAST:
 118                 return cx18_av_cmd(cx, VIDIOC_S_CTRL, vctrl);
 119
 120         case V4L2_CID_AUDIO_VOLUME:
 121         case V4L2_CID_AUDIO_MUTE:
 122         case V4L2_CID_AUDIO_BALANCE:
 123         case V4L2_CID_AUDIO_BASS:
 124         case V4L2_CID_AUDIO_TREBLE:
 125         case V4L2_CID_AUDIO_LOUDNESS:
 126                 return cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_S_CTRL, vctrl);
 127
 128         default:
 129                 CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
 130                 return -EINVAL;
 131         }
 132         return 0;
 133 }
 134
 135 int cx18_g_ctrl(struct file *file, void *fh, struct v4l2_control *vctrl)
 136 {
 137         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
 138
 139         switch (vctrl->id) {
 140                 /* Standard V4L2 controls */
 141         case V4L2_CID_BRIGHTNESS:
 142         case V4L2_CID_HUE:
 143         case V4L2_CID_SATURATION:
 144         case V4L2_CID_CONTRAST:
 145                 return cx18_av_cmd(cx, VIDIOC_G_CTRL, vctrl);
 146
 147         case V4L2_CID_AUDIO_VOLUME:
 148         case V4L2_CID_AUDIO_MUTE:
 149         case V4L2_CID_AUDIO_BALANCE:
 150         case V4L2_CID_AUDIO_BASS:
 151         case V4L2_CID_AUDIO_TREBLE:
 152         case V4L2_CID_AUDIO_LOUDNESS:
 153                 return cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_G_CTRL, vctrl);
 154         default:
 155                 CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
 156                 return -EINVAL;
 157         }
 158         return 0;
 159 }
 160
 161 static int cx18_setup_vbi_fmt(struct cx18 *cx, enum v4l2_mpeg_stream_vbi_fmt fmt)
 162 {
 163         if (!(cx->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
 164                 return -EINVAL;
 165         if (atomic_read(&cx->ana_capturing) > 0)
 166                 return -EBUSY;
 167
 168         /* First try to allocate sliced VBI buffers if needed. */
 169         if (fmt && cx->vbi.sliced_mpeg_data[0] == NULL) {
 170                 int i;
 171
 172                 for (i = 0; i < CX18_VBI_FRAMES; i++) {
 173                         /* Yuck, hardcoded. Needs to be a define */
 174                         cx->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
 175                         if (cx->vbi.sliced_mpeg_data[i] == NULL) {
 176                                 while (--i >= 0) {
 177                                         kfree(cx->vbi.sliced_mpeg_data[i]);
 178                                         cx->vbi.sliced_mpeg_data[i] = NULL;
 179                                 }
 180                                 return -ENOMEM;
 181                         }
 182                 }
 183         }
 184
 185         cx->vbi.insert_mpeg = fmt;
 186
 187         if (cx->vbi.insert_mpeg == 0)
 188                 return 0;
 189         /* Need sliced data for mpeg insertion */
 190         if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
 191                 if (cx->is_60hz)
 192                         cx->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
 193                 else
 194                         cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
 195                 cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
 196         }
 197         return 0;
 198 }
 199
 200 int cx18_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 201 {
 202         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
 203         struct v4l2_control ctrl;
 204
 205         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 206                 int i;
 207                 int err = 0;
 208
 209                 for (i = 0; i < c->count; i++) {
 210                         ctrl.id = c->controls[i].id;
 211                         ctrl.value = c->controls[i].value;
 212                         err = cx18_g_ctrl(file, fh, &ctrl);
 213                         c->controls[i].value = ctrl.value;
 214                         if (err) {
 215                                 c->error_idx = i;
 216                                 break;
 217                         }
 218                 }
 219                 return err;
 220         }
 221         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 222                 return cx2341x_ext_ctrls(&cx->params, 0, c, VIDIOC_G_EXT_CTRLS);
 223         return -EINVAL;
 224 }
 225
 226 int cx18_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 227 {
 228         struct cx18_open_id *id = fh;
 229         struct cx18 *cx = id->cx;
 230         int ret;
 231         struct v4l2_control ctrl;
 232
 233         ret = v4l2_prio_check(&cx->prio, &id->prio);
 234         if (ret)
 235                 return ret;
 236
 237         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
 238                 int i;
 239                 int err = 0;
 240
 241                 for (i = 0; i < c->count; i++) {
 242                         ctrl.id = c->controls[i].id;
 243                         ctrl.value = c->controls[i].value;
 244                         err = cx18_s_ctrl(file, fh, &ctrl);
 245                         c->controls[i].value = ctrl.value;
 246                         if (err) {
 247                                 c->error_idx = i;
 248                                 break;
 249                         }
 250                 }
 251                 return err;
 252         }
 253         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
 254                 struct cx2341x_mpeg_params p = cx->params;
 255                 int err = cx2341x_ext_ctrls(&p, atomic_read(&cx->ana_capturing),
 256                                                 c, VIDIOC_S_EXT_CTRLS);
 257
 258                 if (err)
 259                         return err;
 260
 261                 if (p.video_encoding != cx->params.video_encoding) {
 262                         int is_mpeg1 = p.video_encoding ==
 263                                                 V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
 264                         struct v4l2_format fmt;
 265
 266                         /* fix videodecoder resolution */
 267                         fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 268                         fmt.fmt.pix.width = cx->params.width
 269                                                 / (is_mpeg1 ? 2 : 1);
 270                         fmt.fmt.pix.height = cx->params.height;
 271                         cx18_av_cmd(cx, VIDIOC_S_FMT, &fmt);
 272                 }
 273                 err = cx2341x_update(cx, cx18_api_func, &cx->params, &p);
 274                 if (!err && cx->params.stream_vbi_fmt != p.stream_vbi_fmt)
 275                         err = cx18_setup_vbi_fmt(cx, p.stream_vbi_fmt);
 276                 cx->params = p;
 277                 cx->dualwatch_stereo_mode = p.audio_properties & 0x0300;
 278                 cx18_audio_set_audio_clock_freq(cx, p.audio_properties & 0x03);
 279                 return err;
 280         }
 281         return -EINVAL;
 282 }
 283
 284 int cx18_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
 285 {
 286         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
 287
 288         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
 289                 return cx2341x_ext_ctrls(&cx->params,
 290                                                 atomic_read(&cx->ana_capturing),
 291                                                 c, VIDIOC_TRY_EXT_CTRLS);
 292         return -EINVAL;
 293 }