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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
|
/*
*
* $Id$
*
* 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
*
*/
/*
This source file is specifically designed to interface with the
cx2584x, in kernels 2.6.16 or newer.
*/
#include "pvrusb2-cx2584x-v4l.h"
#include "pvrusb2-video-v4l.h"
#include "pvrusb2-i2c-cmd-v4l2.h"
#include "pvrusb2-hdw-internal.h"
#include "pvrusb2-debug.h"
#include <media/cx25840.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <linux/errno.h>
#include <linux/slab.h>
struct pvr2_v4l_cx2584x {
struct pvr2_i2c_handler handler;
struct pvr2_decoder_ctrl ctrl;
struct pvr2_i2c_client *client;
struct pvr2_hdw *hdw;
unsigned long stale_mask;
};
static void set_input(struct pvr2_v4l_cx2584x *ctxt)
{
struct pvr2_hdw *hdw = ctxt->hdw;
struct v4l2_routing route;
enum cx25840_video_input vid_input;
enum cx25840_audio_input aud_input;
memset(&route,0,sizeof(route));
switch(hdw->input_val) {
case PVR2_CVAL_INPUT_TV:
vid_input = CX25840_COMPOSITE7;
aud_input = CX25840_AUDIO8;
break;
case PVR2_CVAL_INPUT_COMPOSITE:
vid_input = CX25840_COMPOSITE3;
aud_input = CX25840_AUDIO_SERIAL;
break;
case PVR2_CVAL_INPUT_SVIDEO:
vid_input = CX25840_SVIDEO1;
aud_input = CX25840_AUDIO_SERIAL;
break;
case PVR2_CVAL_INPUT_RADIO:
default:
// Just set it to be composite input for now...
vid_input = CX25840_COMPOSITE3;
aud_input = CX25840_AUDIO_SERIAL;
break;
}
pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx2584x set_input vid=0x%x aud=0x%x",
vid_input,aud_input);
route.input = (u32)vid_input;
pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_VIDEO_ROUTING,&route);
route.input = (u32)aud_input;
pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_AUDIO_ROUTING,&route);
}
static int check_input(struct pvr2_v4l_cx2584x *ctxt)
{
struct pvr2_hdw *hdw = ctxt->hdw;
return hdw->input_dirty != 0;
}
static void set_audio(struct pvr2_v4l_cx2584x *ctxt)
{
u32 val;
struct pvr2_hdw *hdw = ctxt->hdw;
pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx2584x set_audio %d",
hdw->srate_val);
switch (hdw->srate_val) {
default:
case V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000:
val = 48000;
break;
case V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100:
val = 44100;
break;
case V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000:
val = 32000;
break;
}
pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_AUDIO_CLOCK_FREQ,&val);
}
static int check_audio(struct pvr2_v4l_cx2584x *ctxt)
{
struct pvr2_hdw *hdw = ctxt->hdw;
return hdw->srate_dirty != 0;
}
struct pvr2_v4l_cx2584x_ops {
void (*update)(struct pvr2_v4l_cx2584x *);
int (*check)(struct pvr2_v4l_cx2584x *);
};
static const struct pvr2_v4l_cx2584x_ops decoder_ops[] = {
{ .update = set_input, .check = check_input},
{ .update = set_audio, .check = check_audio},
};
static void decoder_detach(struct pvr2_v4l_cx2584x *ctxt)
{
ctxt->client->handler = NULL;
ctxt->hdw->decoder_ctrl = NULL;
kfree(ctxt);
}
static int decoder_check(struct pvr2_v4l_cx2584x *ctxt)
{
unsigned long msk;
unsigned int idx;
for (idx = 0; idx < sizeof(decoder_ops)/sizeof(decoder_ops[0]);
idx++) {
msk = 1 << idx;
if (ctxt->stale_mask & msk) continue;
if (decoder_ops[idx].check(ctxt)) {
ctxt->stale_mask |= msk;
}
}
return ctxt->stale_mask != 0;
}
static void decoder_update(struct pvr2_v4l_cx2584x *ctxt)
{
unsigned long msk;
unsigned int idx;
for (idx = 0; idx < sizeof(decoder_ops)/sizeof(decoder_ops[0]);
idx++) {
msk = 1 << idx;
if (!(ctxt->stale_mask & msk)) continue;
ctxt->stale_mask &= ~msk;
decoder_ops[idx].update(ctxt);
}
}
static void decoder_enable(struct pvr2_v4l_cx2584x *ctxt,int fl)
{
pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx25840 decoder_enable(%d)",fl);
pvr2_v4l2_cmd_stream(ctxt->client,fl);
}
static int decoder_detect(struct pvr2_i2c_client *cp)
{
int ret;
/* Attempt to query the decoder - let's see if it will answer */
struct v4l2_queryctrl qc;
memset(&qc,0,sizeof(qc));
qc.id = V4L2_CID_BRIGHTNESS;
ret = pvr2_i2c_client_cmd(cp,VIDIOC_QUERYCTRL,&qc);
return ret == 0; /* Return true if it answered */
}
static int decoder_is_tuned(struct pvr2_v4l_cx2584x *ctxt)
{
struct v4l2_tuner vt;
int ret;
memset(&vt,0,sizeof(vt));
ret = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_G_TUNER,&vt);
if (ret < 0) return -EINVAL;
return vt.signal ? 1 : 0;
}
static unsigned int decoder_describe(struct pvr2_v4l_cx2584x *ctxt,
char *buf,unsigned int cnt)
{
return scnprintf(buf,cnt,"handler: pvrusb2-cx2584x-v4l");
}
static void decoder_reset(struct pvr2_v4l_cx2584x *ctxt)
{
int ret;
ret = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_RESET,NULL);
pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx25840 decoder_reset (ret=%d)",ret);
}
const static struct pvr2_i2c_handler_functions hfuncs = {
.detach = (void (*)(void *))decoder_detach,
.check = (int (*)(void *))decoder_check,
.update = (void (*)(void *))decoder_update,
.describe = (unsigned int (*)(void *,char *,unsigned int))decoder_describe,
};
int pvr2_i2c_cx2584x_v4l_setup(struct pvr2_hdw *hdw,
struct pvr2_i2c_client *cp)
{
struct pvr2_v4l_cx2584x *ctxt;
if (hdw->decoder_ctrl) return 0;
if (cp->handler) return 0;
if (!decoder_detect(cp)) return 0;
ctxt = kmalloc(sizeof(*ctxt),GFP_KERNEL);
if (!ctxt) return 0;
memset(ctxt,0,sizeof(*ctxt));
ctxt->handler.func_data = ctxt;
ctxt->handler.func_table = &hfuncs;
ctxt->ctrl.ctxt = ctxt;
ctxt->ctrl.detach = (void (*)(void *))decoder_detach;
ctxt->ctrl.enable = (void (*)(void *,int))decoder_enable;
ctxt->ctrl.tuned = (int (*)(void *))decoder_is_tuned;
ctxt->ctrl.force_reset = (void (*)(void*))decoder_reset;
ctxt->client = cp;
ctxt->hdw = hdw;
ctxt->stale_mask = (1 << (sizeof(decoder_ops)/
sizeof(decoder_ops[0]))) - 1;
hdw->decoder_ctrl = &ctxt->ctrl;
cp->handler = &ctxt->handler;
pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x cx2584x V4L2 handler set up",
cp->client->addr);
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: ***
*/
|
