ivtv-routing.c

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/*
    Audio/video-routing-related ivtv functions.
    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
    Copyright (C) 2005-2007  Hans Verkuil <[email protected]>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "ivtv-driver.h"
#include "ivtv-i2c.h"
#include "ivtv-cards.h"
#include "ivtv-gpio.h"
#include "ivtv-routing.h"

#include <media/msp3400.h>
#include <media/m52790.h>
#include <media/upd64031a.h>
#include <media/upd64083.h>

/* Selects the audio input and output according to the current
   settings. */
void ivtv_audio_set_io(struct ivtv *itv)
{
    const struct ivtv_card_audio_input *in;
    u32 input, output = 0;

    /* Determine which input to use */
    if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
        in = &itv->card->radio_input;
    else
        in = &itv->card->audio_inputs[itv->audio_input];

    /* handle muxer chips */
    input = in->muxer_input;
    if (itv->card->hw_muxer & IVTV_HW_M52790)
        output = M52790_OUT_STEREO;
    v4l2_subdev_call(itv->sd_muxer, audio, s_routing,
            input, output, 0);

    input = in->audio_input;
    output = 0;
    if (itv->card->hw_audio & IVTV_HW_MSP34XX)
        output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
    ivtv_call_hw(itv, itv->card->hw_audio, audio, s_routing,
            input, output, 0);
}

/* Selects the video input and output according to the current
   settings. */
void ivtv_video_set_io(struct ivtv *itv)
{
    int inp = itv->active_input;
    u32 input;
    u32 type;

    v4l2_subdev_call(itv->sd_video, video, s_routing,
        itv->card->video_inputs[inp].video_input, 0, 0);

    type = itv->card->video_inputs[inp].video_type;

    if (type == IVTV_CARD_INPUT_VID_TUNER) {
        input = 0;  /* Tuner */
    } else if (type < IVTV_CARD_INPUT_COMPOSITE1) {
        input = 2;  /* S-Video */
    } else {
        input = 1;  /* Composite */
    }

    if (itv->card->hw_video & IVTV_HW_GPIO)
        ivtv_call_hw(itv, IVTV_HW_GPIO, video, s_routing,
                input, 0, 0);

    if (itv->card->hw_video & IVTV_HW_UPD64031A) {
        if (type == IVTV_CARD_INPUT_VID_TUNER ||
            type >= IVTV_CARD_INPUT_COMPOSITE1) {
            /* Composite: GR on, connect to 3DYCS */
            input = UPD64031A_GR_ON | UPD64031A_3DYCS_COMPOSITE;
        } else {
            /* S-Video: GR bypassed, turn it off */
            input = UPD64031A_GR_OFF | UPD64031A_3DYCS_DISABLE;
        }
        input |= itv->card->gr_config;

        ivtv_call_hw(itv, IVTV_HW_UPD64031A, video, s_routing,
                input, 0, 0);
    }

    if (itv->card->hw_video & IVTV_HW_UPD6408X) {
        input = UPD64083_YCS_MODE;
        if (type > IVTV_CARD_INPUT_VID_TUNER &&
            type < IVTV_CARD_INPUT_COMPOSITE1) {
            /* S-Video uses YCNR mode and internal Y-ADC, the
               upd64031a is not used. */
            input |= UPD64083_YCNR_MODE;
        }
        else if (itv->card->hw_video & IVTV_HW_UPD64031A) {
            /* Use upd64031a output for tuner and
               composite(CX23416GYC only) inputs */
            if (type == IVTV_CARD_INPUT_VID_TUNER ||
                itv->card->type == IVTV_CARD_CX23416GYC) {
                input |= UPD64083_EXT_Y_ADC;
            }
        }
        ivtv_call_hw(itv, IVTV_HW_UPD6408X, video, s_routing,
                input, 0, 0);
    }
}