pci/ivtv/ivtv-routing.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003     Audio/video-routing-related ivtv functions.
0004     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
0005     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
0006
0007  */
0008
0009 #include "ivtv-driver.h"
0010 #include "ivtv-i2c.h"
0011 #include "ivtv-cards.h"
0012 #include "ivtv-gpio.h"
0013 #include "ivtv-routing.h"
0014
0015 #include <media/drv-intf/msp3400.h>
0016 #include <media/i2c/m52790.h>
0017 #include <media/i2c/upd64031a.h>
0018 #include <media/i2c/upd64083.h>
0019
0020 /* Selects the audio input and output according to the current
0021    settings. */
0022 void ivtv_audio_set_io(struct ivtv *itv)
0023 {
0024     const struct ivtv_card_audio_input *in;
0025     u32 input, output = 0;
0026
0027     /* Determine which input to use */
0028     if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
0029         in = &itv->card->radio_input;
0030     else
0031         in = &itv->card->audio_inputs[itv->audio_input];
0032
0033     /* handle muxer chips */
0034     input = in->muxer_input;
0035     if (itv->card->hw_muxer & IVTV_HW_M52790)
0036         output = M52790_OUT_STEREO;
0037     v4l2_subdev_call(itv->sd_muxer, audio, s_routing,
0038             input, output, 0);
0039
0040     input = in->audio_input;
0041     output = 0;
0042     if (itv->card->hw_audio & IVTV_HW_MSP34XX)
0043         output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
0044     ivtv_call_hw(itv, itv->card->hw_audio, audio, s_routing,
0045             input, output, 0);
0046 }
0047
0048 /* Selects the video input and output according to the current
0049    settings. */
0050 void ivtv_video_set_io(struct ivtv *itv)
0051 {
0052     int inp = itv->active_input;
0053     u32 input;
0054     u32 type;
0055
0056     v4l2_subdev_call(itv->sd_video, video, s_routing,
0057         itv->card->video_inputs[inp].video_input, 0, 0);
0058
0059     type = itv->card->video_inputs[inp].video_type;
0060
0061     if (type == IVTV_CARD_INPUT_VID_TUNER) {
0062         input = 0;  /* Tuner */
0063     } else if (type < IVTV_CARD_INPUT_COMPOSITE1) {
0064         input = 2;  /* S-Video */
0065     } else {
0066         input = 1;  /* Composite */
0067     }
0068
0069     if (itv->card->hw_video & IVTV_HW_GPIO)
0070         ivtv_call_hw(itv, IVTV_HW_GPIO, video, s_routing,
0071                 input, 0, 0);
0072
0073     if (itv->card->hw_video & IVTV_HW_UPD64031A) {
0074         if (type == IVTV_CARD_INPUT_VID_TUNER ||
0075             type >= IVTV_CARD_INPUT_COMPOSITE1) {
0076             /* Composite: GR on, connect to 3DYCS */
0077             input = UPD64031A_GR_ON | UPD64031A_3DYCS_COMPOSITE;
0078         } else {
0079             /* S-Video: GR bypassed, turn it off */
0080             input = UPD64031A_GR_OFF | UPD64031A_3DYCS_DISABLE;
0081         }
0082         input |= itv->card->gr_config;
0083
0084         ivtv_call_hw(itv, IVTV_HW_UPD64031A, video, s_routing,
0085                 input, 0, 0);
0086     }
0087
0088     if (itv->card->hw_video & IVTV_HW_UPD6408X) {
0089         input = UPD64083_YCS_MODE;
0090         if (type > IVTV_CARD_INPUT_VID_TUNER &&
0091             type < IVTV_CARD_INPUT_COMPOSITE1) {
0092             /* S-Video uses YCNR mode and internal Y-ADC, the
0093                upd64031a is not used. */
0094             input |= UPD64083_YCNR_MODE;
0095         }
0096         else if (itv->card->hw_video & IVTV_HW_UPD64031A) {
0097             /* Use upd64031a output for tuner and
0098                composite(CX23416GYC only) inputs */
0099             if (type == IVTV_CARD_INPUT_VID_TUNER ||
0100                 itv->card->type == IVTV_CARD_CX23416GYC) {
0101                 input |= UPD64083_EXT_Y_ADC;
0102             }
0103         }
0104         ivtv_call_hw(itv, IVTV_HW_UPD6408X, video, s_routing,
0105                 input, 0, 0);
0106     }
0107 }