LXR linux/drivers/media/pci/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/drv-intf/msp3400.h>
  28#include <media/i2c/m52790.h>
  29#include <media/i2c/upd64031a.h>
  30#include <media/i2c/upd64083.h>
  31
  32/* Selects the audio input and output according to the current
  33   settings. */
  34void 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. */
  62void 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}
 120