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
|
/*
*
*
* 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.h"
#include "pvrusb2-util.h"
#include "pvrusb2-tuner.h"
#include "pvrusb2-hdw-internal.h"
#include "pvrusb2-debug.h"
#include <linux/videodev2.h>
#include <media/tuner.h>
#include <media/v4l2-common.h>
struct pvr2_tuner_handler {
struct pvr2_hdw *hdw;
struct pvr2_i2c_client *client;
struct pvr2_i2c_handler i2c_handler;
int type_update_fl;
};
static void set_type(struct pvr2_tuner_handler *ctxt)
{
struct pvr2_hdw *hdw = ctxt->hdw;
struct tuner_setup setup;
pvr2_trace(PVR2_TRACE_CHIPS,"i2c tuner set_type(%d)",hdw->tuner_type);
if (((int)(hdw->tuner_type)) < 0) return;
setup.addr = ADDR_UNSET;
setup.type = hdw->tuner_type;
setup.mode_mask = T_RADIO | T_ANALOG_TV;
/* We may really want mode_mask to be T_ANALOG_TV for now */
pvr2_i2c_client_cmd(ctxt->client,TUNER_SET_TYPE_ADDR,&setup);
ctxt->type_update_fl = 0;
}
static int tuner_check(struct pvr2_tuner_handler *ctxt)
{
struct pvr2_hdw *hdw = ctxt->hdw;
if (hdw->tuner_updated) ctxt->type_update_fl = !0;
return ctxt->type_update_fl != 0;
}
static void tuner_update(struct pvr2_tuner_handler *ctxt)
{
if (ctxt->type_update_fl) set_type(ctxt);
}
static void pvr2_tuner_detach(struct pvr2_tuner_handler *ctxt)
{
ctxt->client->handler = NULL;
kfree(ctxt);
}
static unsigned int pvr2_tuner_describe(struct pvr2_tuner_handler *ctxt,char *buf,unsigned int cnt)
{
return scnprintf(buf,cnt,"handler: pvrusb2-tuner");
}
static const struct pvr2_i2c_handler_functions tuner_funcs = {
.detach = (void (*)(void *))pvr2_tuner_detach,
.check = (int (*)(void *))tuner_check,
.update = (void (*)(void *))tuner_update,
.describe = (unsigned int (*)(void *,char *,unsigned int))pvr2_tuner_describe,
};
int pvr2_i2c_tuner_setup(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
{
struct pvr2_tuner_handler *ctxt;
if (cp->handler) return 0;
ctxt = kzalloc(sizeof(*ctxt),GFP_KERNEL);
if (!ctxt) return 0;
ctxt->i2c_handler.func_data = ctxt;
ctxt->i2c_handler.func_table = &tuner_funcs;
ctxt->type_update_fl = !0;
ctxt->client = cp;
ctxt->hdw = hdw;
cp->handler = &ctxt->i2c_handler;
pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x tuner 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: ***
*/
|
