1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/*
*
* $Id: pvrusb2-audio.c,v 1.2 2005/11/29 14:10:44 mchehab Exp $
*
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
*
* 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
*
* 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 "pvrusb2-i2c.h"
#include "pvrusb2-audio.h"
#include "pvrusb2-hdw-internal.h"
#include "pvrusb2-debug.h"
#include "msp3400.h"
#include <linux/videodev.h>
#include <media/audiochip.h>
/*
MCI <isely@pobox.com> 10-Mar-2005 - Rather than operate the msp34xx
directly, we rely on the msp3400.ko module to do it for us. We
really have to do this because that $##@!! module is going to attach
itself to us anyway, so we really can't operate the chip ourselves.
Unfortunately msp3400.ko is a real train wreck of a piece of code.
Most of the code below tries to tickle that module in just the right
way to get the results we need. Yuck. msp3400.c should be taken
out back and shot. Based on my reading of the actual chip datasheet
it should in theory be possible to write a far cleaner and simpler
driver than what is currently there right now.
*/
static int xlat_audiomode_to_v4l2(int id)
{
switch (id) {
case PVR2_CVAL_AUDIOMODE_MONO:
return V4L2_TUNER_MODE_MONO;
case PVR2_CVAL_AUDIOMODE_STEREO:
return V4L2_TUNER_MODE_STEREO;
case PVR2_CVAL_AUDIOMODE_SAP:
return V4L2_TUNER_MODE_SAP;
case PVR2_CVAL_AUDIOMODE_LANG1:
return V4L2_TUNER_MODE_LANG1;
case PVR2_CVAL_AUDIOMODE_LANG2:
return V4L2_TUNER_MODE_LANG2;
}
return V4L2_TUNER_MODE_STEREO;
}
/* Relay the video standard into the msp3400 module so that it can use
that information as additional clue(s) for correctly detecting
audio. */
int pvr2_audio_set_standard(struct pvr2_hdw *hdw)
{
struct video_channel vc;
memset(&vc,0,sizeof(vc));
switch (hdw->controls[PVR2_CID_VIDEOSTANDARD].value) {
default:
case PVR2_CVAL_VIDEOSTANDARD_NTSC_M:
case PVR2_CVAL_VIDEOSTANDARD_PAL_M: /* Hack */
vc.norm = VIDEO_MODE_NTSC;
break;
case PVR2_CVAL_VIDEOSTANDARD_SECAM_L:
vc.norm = VIDEO_MODE_SECAM;
break;
case PVR2_CVAL_VIDEOSTANDARD_PAL_BG:
case PVR2_CVAL_VIDEOSTANDARD_PAL_I:
case PVR2_CVAL_VIDEOSTANDARD_PAL_DK:
vc.norm = VIDEO_MODE_PAL;
break;
}
hdw->subsys_enabled_mask |= PVR2_SUBSYS_AUDIO_CFG_STD;
return pvr2_i2c_msp3400_cmd(hdw,VIDIOCSCHAN,&vc);
}
/* This function selects the correct audio input source */
int pvr2_audio_set_stereo(struct pvr2_hdw *hdw)
{
int stat;
unsigned short sarg = 0;
struct msp_matrix mspm;
pvr2_trace(PVR2_TRACE_AUDIO,"pvr_audio_set_stereo");
if (hdw->controls[PVR2_CID_INPUT].value == PVR2_CVAL_INPUT_TV) {
struct v4l2_tuner vt;
memset(&vt,0,sizeof(vt));
vt.audmode = xlat_audiomode_to_v4l2(
hdw->controls[PVR2_CID_AUDIOMODE].value);
stat = pvr2_i2c_msp3400_cmd(hdw,VIDIOC_S_TUNER,&vt);
if (stat < 0) return stat;
}
sarg = AUDIO_TUNER;
switch (hdw->controls[PVR2_CID_INPUT].value) {
case PVR2_CVAL_INPUT_TV:
sarg = AUDIO_TUNER;
break;
case PVR2_CVAL_INPUT_RADIO:
/* Assume that msp34xx also handle FM decoding, in which case
we're still using the tuner. */
sarg = AUDIO_TUNER;
break;
case PVR2_CVAL_INPUT_SVIDEO:
case PVR2_CVAL_INPUT_COMPOSITE:
sarg = AUDIO_EXTERN;
break;
}
stat = pvr2_i2c_msp3400_cmd(hdw,AUDC_SET_INPUT,&sarg);
if (stat < 0) return stat;
/* The above should have been enough to do the job, however
msp3400.ko does an incomplete job of handling the scart
routing. Really. It doesn't even bother to initialize the
SC1 output at all. So we have to help it here...
Unfortunately this also means that we have include
msp3400.c's header file and it currently isn't in a public
place. Damnit! */
mspm.input = SCART_IN1_DA;
switch (hdw->controls[PVR2_CID_INPUT].value) {
case PVR2_CVAL_INPUT_SVIDEO:
case PVR2_CVAL_INPUT_COMPOSITE:
/* Bypass the DSP and just use IN1. In theory we
should be able to permanent just use IN1_DA, but to
do that msp3400.ko should be adjusting the DSP
input SCART routing correctly when doing video in.
Unfortunately that appears not to be the case. I
really hate that module. */
mspm.input = SCART_IN1;
break;
}
mspm.output = 1;
stat = pvr2_i2c_msp3400_cmd(hdw,MSP_SET_MATRIX,&mspm);
if (stat < 0) return stat;
hdw->subsys_enabled_mask |= PVR2_SUBSYS_AUDIO_CFG_MODE;
return 0;
}
/* This sets the audio volume parameters */
int pvr2_audio_setvolume(struct pvr2_hdw *hdw)
{
struct video_audio vt;
memset(&vt,0,sizeof(vt));
vt.flags = (VIDEO_AUDIO_VOLUME |
VIDEO_AUDIO_BALANCE |
VIDEO_AUDIO_BASS |
VIDEO_AUDIO_TREBLE |
VIDEO_AUDIO_MUTABLE);
if (hdw->controls[PVR2_CID_MUTE].value) vt.flags |= VIDEO_AUDIO_MUTE;
vt.volume = hdw->controls[PVR2_CID_VOLUME].value;
vt.balance = hdw->controls[PVR2_CID_BALANCE].value;
vt.bass = hdw->controls[PVR2_CID_BASS].value;
vt.treble = hdw->controls[PVR2_CID_TREBLE].value;
pvr2_trace(PVR2_TRACE_AUDIO,
"pvr_audio_setvolume(vol=%d bal=%d bas=%d treb=%d mute=%d)",
vt.volume,vt.balance,vt.bass,vt.treble,
(vt.flags & VIDEO_AUDIO_MUTE) != 0);
hdw->subsys_enabled_mask |= PVR2_SUBSYS_AUDIO_CFG_VBBTM;
return pvr2_i2c_msp3400_cmd(hdw,VIDIOCSAUDIO,&vt);
}
/* This reads back the current volume parameters and signal type */
int pvr2_audio_update_status(struct pvr2_hdw *hdw)
{
struct video_audio vt;
int stat;
stat = pvr2_i2c_msp3400_cmd(hdw,VIDIOCGAUDIO,&vt);
if (stat < 0) return stat;
#ifdef notdef
if (vt.flags & VIDEO_AUDIO_MUTABLE) {
hdw->controls[PVR2_CID_MUTE].value =
(vt.flags & VIDEO_AUDIO_MUTE) ? 1 : 0;
}
if (vt.flags & VIDEO_AUDIO_VOLUME) {
pvr2_trace(PVR2_TRACE_AUDIO,
"pvr_audio_update_status: got volume");
hdw->controls[PVR2_CID_VOLUME].value = vt.volume;
}
if (vt.flags & VIDEO_AUDIO_BASS) {
pvr2_trace(PVR2_TRACE_AUDIO,
"pvr_audio_update_status: got bass");
hdw->controls[PVR2_CID_BASS].value = vt.bass;
}
if (vt.flags & VIDEO_AUDIO_TREBLE) {
pvr2_trace(PVR2_TRACE_AUDIO,
"pvr_audio_update_status: got treble");
hdw->controls[PVR2_CID_TREBLE].value = vt.treble;
}
if (vt.flags & (VIDEO_AUDIO_BALANCE|VIDEO_AUDIO_VOLUME)) {
pvr2_trace(PVR2_TRACE_AUDIO,
"pvr_audio_update_status: got balance");
hdw->controls[PVR2_CID_BALANCE].value = vt.balance;
}
#endif
hdw->flag_stereo = (vt.mode & VIDEO_SOUND_STEREO) != 0;
hdw->flag_bilingual = (vt.mode &
(VIDEO_SOUND_LANG1|VIDEO_SOUND_LANG2)) != 0;
return 0;
}
/*
Stuff for Emacs to see, in order to encourage consistent editing style:
*** Local Variables: ***
*** mode: c ***
*** fill-column: 70 ***
*** tab-width: 8 ***
*** c-basic-offset: 8 ***
*** End: ***
*/
|
