release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/media/video/ivtv/ivtv-routing.c

   1 /*
   2     Audio/video-routing-related ivtv 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-i2c.h"
  23 #include "ivtv-cards.h"
  24 #include "ivtv-gpio.h"
  25 #include "ivtv-routing.h"
  26
  27 #include <media/msp3400.h>
  28 #include <media/m52790.h>
  29 #include <media/upd64031a.h>
  30 #include <media/upd64083.h>
  31
  32 /* Selects the audio input and output according to the current
  33    settings. */
  34 void ivtv_audio_set_io(struct ivtv *itv)
  35 {
  36         const struct ivtv_card_audio_input *in;
  37         u32 input, output = 0;
  38
  39         /* Determine which input to use */
  40         if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
  41                 in = &itv->card->radio_input;
  42         else
  43                 in = &itv->card->audio_inputs[itv->audio_input];
  44
  45         /* handle muxer chips */
  46         input = in->muxer_input;
  47         if (itv->card->hw_muxer & IVTV_HW_M52790)
  48                 output = M52790_OUT_STEREO;
  49         v4l2_subdev_call(itv->sd_muxer, audio, s_routing,
  50                         input, output, 0);
  51
  52         input = in->audio_input;
  53         output = 0;
  54         if (itv->card->hw_audio & IVTV_HW_MSP34XX)
  55                 output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
  56         ivtv_call_hw(itv, itv->card->hw_audio, audio, s_routing,
  57                         input, output, 0);
  58 }
  59
  60 /* Selects the video input and output according to the current
  61    settings. */
  62 void ivtv_video_set_io(struct ivtv *itv)
  63 {
  64         int inp = itv->active_input;
  65         u32 input;
  66         u32 type;
  67
  68         v4l2_subdev_call(itv->sd_video, video, s_routing,
  69                 itv->card->video_inputs[inp].video_input, 0, 0);
  70
  71         type = itv->card->video_inputs[inp].video_type;
  72
  73         if (type == IVTV_CARD_INPUT_VID_TUNER) {
  74                 input = 0;  /* Tuner */
  75         } else if (type < IVTV_CARD_INPUT_COMPOSITE1) {
  76                 input = 2;  /* S-Video */
  77         } else {
  78                 input = 1;  /* Composite */
  79         }
  80
  81         if (itv->card->hw_video & IVTV_HW_GPIO)
  82                 ivtv_call_hw(itv, IVTV_HW_GPIO, video, s_routing,
  83                                 input, 0, 0);
  84
  85         if (itv->card->hw_video & IVTV_HW_UPD64031A) {
  86                 if (type == IVTV_CARD_INPUT_VID_TUNER ||
  87                     type >= IVTV_CARD_INPUT_COMPOSITE1) {
  88                         /* Composite: GR on, connect to 3DYCS */
  89                         input = UPD64031A_GR_ON | UPD64031A_3DYCS_COMPOSITE;
  90                 } else {
  91                         /* S-Video: GR bypassed, turn it off */
  92                         input = UPD64031A_GR_OFF | UPD64031A_3DYCS_DISABLE;
  93                 }
  94                 input |= itv->card->gr_config;
  95
  96                 ivtv_call_hw(itv, IVTV_HW_UPD64031A, video, s_routing,
  97                                 input, 0, 0);
  98         }
  99
 100         if (itv->card->hw_video & IVTV_HW_UPD6408X) {
 101                 input = UPD64083_YCS_MODE;
 102                 if (type > IVTV_CARD_INPUT_VID_TUNER &&
 103                     type < IVTV_CARD_INPUT_COMPOSITE1) {
 104                         /* S-Video uses YCNR mode and internal Y-ADC, the
 105                            upd64031a is not used. */
 106                         input |= UPD64083_YCNR_MODE;
 107                 }
 108                 else if (itv->card->hw_video & IVTV_HW_UPD64031A) {
 109                         /* Use upd64031a output for tuner and
 110                            composite(CX23416GYC only) inputs */
 111                         if (type == IVTV_CARD_INPUT_VID_TUNER ||
 112                             itv->card->type == IVTV_CARD_CX23416GYC) {
 113                                 input |= UPD64083_EXT_Y_ADC;
 114                         }
 115                 }
 116                 ivtv_call_hw(itv, IVTV_HW_UPD6408X, video, s_routing,
 117                                 input, 0, 0);
 118         }
 119 }