drivers/media/pci/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-ioctl.h"
  23 #include "ivtv-controls.h"
  24 #include "ivtv-mailbox.h"
  25
  26 static int ivtv_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
  27 {
  28         struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  29
  30         /* First try to allocate sliced VBI buffers if needed. */
  31         if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
  32                 int i;
  33
  34                 for (i = 0; i < IVTV_VBI_FRAMES; i++) {
  35                         /* Yuck, hardcoded. Needs to be a define */
  36                         itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
  37                         if (itv->vbi.sliced_mpeg_data[i] == NULL) {
  38                                 while (--i >= 0) {
  39                                         kfree(itv->vbi.sliced_mpeg_data[i]);
  40                                         itv->vbi.sliced_mpeg_data[i] = NULL;
  41                                 }
  42                                 return -ENOMEM;
  43                         }
  44                 }
  45         }
  46
  47         itv->vbi.insert_mpeg = fmt;
  48
  49         if (itv->vbi.insert_mpeg == 0) {
  50                 return 0;
  51         }
  52         /* Need sliced data for mpeg insertion */
  53         if (ivtv_get_service_set(itv->vbi.sliced_in) == 0) {
  54                 if (itv->is_60hz)
  55                         itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
  56                 else
  57                         itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
  58                 ivtv_expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
  59         }
  60         return 0;
  61 }
  62
  63 static int ivtv_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
  64 {
  65         struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  66         int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
  67         struct v4l2_subdev_format format = {
  68                 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
  69         };
  70
  71         /* fix videodecoder resolution */
  72         format.format.width = cxhdl->width / (is_mpeg1 ? 2 : 1);
  73         format.format.height = cxhdl->height;
  74         format.format.code = MEDIA_BUS_FMT_FIXED;
  75         v4l2_subdev_call(itv->sd_video, pad, set_fmt, NULL, &format);
  76         return 0;
  77 }
  78
  79 static int ivtv_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
  80 {
  81         static const u32 freqs[3] = { 44100, 48000, 32000 };
  82         struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  83
  84         /* The audio clock of the digitizer must match the codec sample
  85            rate otherwise you get some very strange effects. */
  86         if (idx < ARRAY_SIZE(freqs))
  87                 ivtv_call_all(itv, audio, s_clock_freq, freqs[idx]);
  88         return 0;
  89 }
  90
  91 static int ivtv_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
  92 {
  93         struct ivtv *itv = container_of(cxhdl, struct ivtv, cxhdl);
  94
  95         itv->dualwatch_stereo_mode = val;
  96         return 0;
  97 }
  98
  99 const struct cx2341x_handler_ops ivtv_cxhdl_ops = {
 100         .s_audio_mode = ivtv_s_audio_mode,
 101         .s_audio_sampling_freq = ivtv_s_audio_sampling_freq,
 102         .s_video_encoding = ivtv_s_video_encoding,
 103         .s_stream_vbi_fmt = ivtv_s_stream_vbi_fmt,
 104 };
 105
 106 int ivtv_g_pts_frame(struct ivtv *itv, s64 *pts, s64 *frame)
 107 {
 108         u32 data[CX2341X_MBOX_MAX_DATA];
 109
 110         if (test_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags)) {
 111                 *pts = (s64)((u64)itv->last_dec_timing[2] << 32) |
 112                         (u64)itv->last_dec_timing[1];
 113                 *frame = itv->last_dec_timing[0];
 114                 return 0;
 115         }
 116         *pts = 0;
 117         *frame = 0;
 118         if (atomic_read(&itv->decoding)) {
 119                 if (ivtv_api(itv, CX2341X_DEC_GET_TIMING_INFO, 5, data)) {
 120                         IVTV_DEBUG_WARN("GET_TIMING: couldn't read clock\n");
 121                         return -EIO;
 122                 }
 123                 memcpy(itv->last_dec_timing, data, sizeof(itv->last_dec_timing));
 124                 set_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags);
 125                 *pts = (s64)((u64) data[2] << 32) | (u64) data[1];
 126                 *frame = data[0];
 127                 /*timing->scr = (u64) (((u64) data[4] << 32) | (u64) (data[3]));*/
 128         }
 129         return 0;
 130 }
 131
 132 static int ivtv_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
 133 {
 134         struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
 135
 136         switch (ctrl->id) {
 137         /* V4L2_CID_MPEG_VIDEO_DEC_PTS and V4L2_CID_MPEG_VIDEO_DEC_FRAME
 138            control cluster */
 139         case V4L2_CID_MPEG_VIDEO_DEC_PTS:
 140                 return ivtv_g_pts_frame(itv, itv->ctrl_pts->p_new.p_s64,
 141                                              itv->ctrl_frame->p_new.p_s64);
 142         }
 143         return 0;
 144 }
 145
 146 static int ivtv_s_ctrl(struct v4l2_ctrl *ctrl)
 147 {
 148         struct ivtv *itv = container_of(ctrl->handler, struct ivtv, cxhdl.hdl);
 149
 150         switch (ctrl->id) {
 151         /* V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK and MULTILINGUAL_PLAYBACK
 152            control cluster */
 153         case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
 154                 itv->audio_stereo_mode = itv->ctrl_audio_playback->val - 1;
 155                 itv->audio_bilingual_mode = itv->ctrl_audio_multilingual_playback->val - 1;
 156                 ivtv_vapi(itv, CX2341X_DEC_SET_AUDIO_MODE, 2, itv->audio_bilingual_mode, itv->audio_stereo_mode);
 157                 break;
 158         }
 159         return 0;
 160 }
 161
 162 const struct v4l2_ctrl_ops ivtv_hdl_out_ops = {
 163         .s_ctrl = ivtv_s_ctrl,
 164         .g_volatile_ctrl = ivtv_g_volatile_ctrl,
 165 };