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 }
120