xref: /linux/drivers/media/pci/ivtv/ivtv-routing.c (revision 75bf465f0bc33e9b776a46d6a1b9b990f5fb7c37)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3     Audio/video-routing-related ivtv functions.
4     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
5     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
6 
7  */
8 
9 #include "ivtv-driver.h"
10 #include "ivtv-i2c.h"
11 #include "ivtv-cards.h"
12 #include "ivtv-gpio.h"
13 #include "ivtv-routing.h"
14 
15 #include <media/drv-intf/msp3400.h>
16 #include <media/i2c/m52790.h>
17 #include <media/i2c/upd64031a.h>
18 #include <media/i2c/upd64083.h>
19 
20 /* Selects the audio input and output according to the current
21    settings. */
ivtv_audio_set_io(struct ivtv * itv)22 void ivtv_audio_set_io(struct ivtv *itv)
23 {
24 	const struct ivtv_card_audio_input *in;
25 	u32 input, output = 0;
26 
27 	/* Determine which input to use */
28 	if (test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags))
29 		in = &itv->card->radio_input;
30 	else
31 		in = &itv->card->audio_inputs[itv->audio_input];
32 
33 	/* handle muxer chips */
34 	input = in->muxer_input;
35 	if (itv->card->hw_muxer & IVTV_HW_M52790)
36 		output = M52790_OUT_STEREO;
37 	v4l2_subdev_call(itv->sd_muxer, audio, s_routing,
38 			input, output, 0);
39 
40 	input = in->audio_input;
41 	output = 0;
42 	if (itv->card->hw_audio & IVTV_HW_MSP34XX)
43 		output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
44 	ivtv_call_hw(itv, itv->card->hw_audio, audio, s_routing,
45 			input, output, 0);
46 }
47 
48 /* Selects the video input and output according to the current
49    settings. */
ivtv_video_set_io(struct ivtv * itv)50 void ivtv_video_set_io(struct ivtv *itv)
51 {
52 	int inp = itv->active_input;
53 	u32 input;
54 	u32 type;
55 
56 	v4l2_subdev_call(itv->sd_video, video, s_routing,
57 		itv->card->video_inputs[inp].video_input, 0, 0);
58 
59 	type = itv->card->video_inputs[inp].video_type;
60 
61 	if (type == IVTV_CARD_INPUT_VID_TUNER) {
62 		input = 0;  /* Tuner */
63 	} else if (type < IVTV_CARD_INPUT_COMPOSITE1) {
64 		input = 2;  /* S-Video */
65 	} else {
66 		input = 1;  /* Composite */
67 	}
68 
69 	if (itv->card->hw_video & IVTV_HW_GPIO)
70 		ivtv_call_hw(itv, IVTV_HW_GPIO, video, s_routing,
71 				input, 0, 0);
72 
73 	if (itv->card->hw_video & IVTV_HW_UPD64031A) {
74 		if (type == IVTV_CARD_INPUT_VID_TUNER ||
75 		    type >= IVTV_CARD_INPUT_COMPOSITE1) {
76 			/* Composite: GR on, connect to 3DYCS */
77 			input = UPD64031A_GR_ON | UPD64031A_3DYCS_COMPOSITE;
78 		} else {
79 			/* S-Video: GR bypassed, turn it off */
80 			input = UPD64031A_GR_OFF | UPD64031A_3DYCS_DISABLE;
81 		}
82 		input |= itv->card->gr_config;
83 
84 		ivtv_call_hw(itv, IVTV_HW_UPD64031A, video, s_routing,
85 				input, 0, 0);
86 	}
87 
88 	if (itv->card->hw_video & IVTV_HW_UPD6408X) {
89 		input = UPD64083_YCS_MODE;
90 		if (type > IVTV_CARD_INPUT_VID_TUNER &&
91 		    type < IVTV_CARD_INPUT_COMPOSITE1) {
92 			/* S-Video uses YCNR mode and internal Y-ADC, the
93 			   upd64031a is not used. */
94 			input |= UPD64083_YCNR_MODE;
95 		}
96 		else if (itv->card->hw_video & IVTV_HW_UPD64031A) {
97 			/* Use upd64031a output for tuner and
98 			   composite(CX23416GYC only) inputs */
99 			if (type == IVTV_CARD_INPUT_VID_TUNER ||
100 			    itv->card->type == IVTV_CARD_CX23416GYC) {
101 				input |= UPD64083_EXT_Y_ADC;
102 			}
103 		}
104 		ivtv_call_hw(itv, IVTV_HW_UPD6408X, video, s_routing,
105 				input, 0, 0);
106 	}
107 }
108