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
|
/*
*
* i2c tv tuner chip device driver
* controls the philips tda8290+75 tuner chip combo.
*/
#include <linux/i2c.h>
#include <linux/videodev.h>
#include <linux/delay.h>
#include <media/tuner.h>
#define I2C_ADDR_TDA8290 0x4b
#define I2C_ADDR_TDA8275 0x61
/* ---------------------------------------------------------------------- */
struct freq_entry {
u16 freq;
u8 value;
};
static struct freq_entry band_table[] = {
{ 0x2DF4, 0x1C },
{ 0x2574, 0x14 },
{ 0x22B4, 0x0C },
{ 0x20D4, 0x0B },
{ 0x1E74, 0x3B },
{ 0x1C34, 0x33 },
{ 0x16F4, 0x5B },
{ 0x1454, 0x53 },
{ 0x12D4, 0x52 },
{ 0x1034, 0x4A },
{ 0x0EE4, 0x7A },
{ 0x0D34, 0x72 },
{ 0x0B54, 0x9A },
{ 0x0914, 0x91 },
{ 0x07F4, 0x89 },
{ 0x0774, 0xB9 },
{ 0x067B, 0xB1 },
{ 0x0634, 0xD9 },
{ 0x05A4, 0xD8 }, // FM radio
{ 0x0494, 0xD0 },
{ 0x03BC, 0xC8 },
{ 0x0394, 0xF8 }, // 57250000 Hz
{ 0x0000, 0xF0 }, // 0
};
static struct freq_entry div_table[] = {
{ 0x1C34, 3 },
{ 0x0D34, 2 },
{ 0x067B, 1 },
{ 0x0000, 0 },
};
static struct freq_entry agc_table[] = {
{ 0x22B4, 0x8F },
{ 0x0B54, 0x9F },
{ 0x09A4, 0x8F },
{ 0x0554, 0x9F },
{ 0x0000, 0xBF },
};
static __u8 get_freq_entry( struct freq_entry* table, __u16 freq)
{
while(table->freq && table->freq > freq)
table++;
return table->value;
}
/* ---------------------------------------------------------------------- */
static unsigned char i2c_enable_bridge[2] = { 0x21, 0xC0 };
static unsigned char i2c_disable_bridge[2] = { 0x21, 0x80 };
static unsigned char i2c_init_tda8275[14] = { 0x00, 0x00, 0x00, 0x00,
0xfC, 0x04, 0xA3, 0x3F,
0x2A, 0x04, 0xFF, 0x00,
0x00, 0x40 };
static unsigned char i2c_set_VS[2] = { 0x30, 0x6F };
static unsigned char i2c_set_GP01_CF[2] = { 0x20, 0x0B };
static unsigned char i2c_tda8290_reset[2] = { 0x00, 0x00 };
static unsigned char i2c_tda8290_standby[2] = { 0x00, 0x02 };
static unsigned char i2c_gainset_off[2] = { 0x28, 0x14 };
static unsigned char i2c_gainset_on[2] = { 0x28, 0x54 };
static unsigned char i2c_agc3_00[2] = { 0x80, 0x00 };
static unsigned char i2c_agc2_BF[2] = { 0x60, 0xBF };
static unsigned char i2c_cb1_D0[2] = { 0x30, 0xD0 };
static unsigned char i2c_cb1_D2[2] = { 0x30, 0xD2 };
static unsigned char i2c_cb1_56[2] = { 0x30, 0x56 };
static unsigned char i2c_cb1_52[2] = { 0x30, 0x52 };
static unsigned char i2c_cb1_50[2] = { 0x30, 0x50 };
static unsigned char i2c_agc2_7F[2] = { 0x60, 0x7F };
static unsigned char i2c_agc3_08[2] = { 0x80, 0x08 };
/* FIXME: European PAL/SECAM should select 9MHz Lowpass Filter, while
NTSC/M and PAL/M should be using 7MHz filter, by selecting CB3 */
static unsigned char i2c_cb3_9MHz[2] = { 0xc0, 0x39 };
static unsigned char i2c_cb3_7MHz[2] = { 0xc0, 0x3B };
static struct i2c_msg i2c_msg_init[] = {
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_init_tda8275), i2c_init_tda8275 },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_disable_bridge), i2c_disable_bridge },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_set_VS), i2c_set_VS },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_set_GP01_CF), i2c_set_GP01_CF },
};
static struct i2c_msg i2c_msg_prolog[] = {
// { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_easy_mode), i2c_easy_mode },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_gainset_off), i2c_gainset_off },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_tda8290_reset), i2c_tda8290_reset },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_enable_bridge), i2c_enable_bridge },
};
static struct i2c_msg i2c_msg_config[] = {
// { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_set_freq), i2c_set_freq },
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_agc3_00), i2c_agc3_00 },
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_agc2_BF), i2c_agc2_BF },
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_cb1_D2), i2c_cb1_D2 },
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_cb1_56), i2c_cb1_56 },
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_cb1_52), i2c_cb1_52 },
};
static struct i2c_msg i2c_msg_epilog[] = {
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_cb1_50), i2c_cb1_50 },
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_agc2_7F), i2c_agc2_7F },
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_agc3_08), i2c_agc3_08 },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_disable_bridge), i2c_disable_bridge },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_gainset_on), i2c_gainset_on },
};
static struct i2c_msg i2c_msg_standby[] = {
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_enable_bridge), i2c_enable_bridge },
{ I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_cb1_D0), i2c_cb1_D0 },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_disable_bridge), i2c_disable_bridge },
{ I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_tda8290_standby), i2c_tda8290_standby },
};
static int tda8290_tune(struct i2c_client *c)
{
struct tuner *t = i2c_get_clientdata(c);
struct i2c_msg easy_mode =
{ I2C_ADDR_TDA8290, 0, 2, t->i2c_easy_mode };
struct i2c_msg set_freq =
{ I2C_ADDR_TDA8275, 0, 8, t->i2c_set_freq };
i2c_transfer(c->adapter, &easy_mode, 1);
i2c_transfer(c->adapter, i2c_msg_prolog, ARRAY_SIZE(i2c_msg_prolog));
i2c_transfer(c->adapter, &set_freq, 1);
i2c_transfer(c->adapter, i2c_msg_config, ARRAY_SIZE(i2c_msg_config));
msleep(550);
i2c_transfer(c->adapter, i2c_msg_epilog, ARRAY_SIZE(i2c_msg_epilog));
return 0;
}
static void set_frequency(struct tuner *t, u16 ifc, unsigned int freq)
{
u32 N;
if (t->mode == V4L2_TUNER_RADIO)
freq = freq / 1000;
N = (((freq<<3)+ifc)&0x3fffc);
N = N >> get_freq_entry(div_table, freq);
t->i2c_set_freq[0] = 0;
t->i2c_set_freq[1] = (unsigned char)(N>>8);
t->i2c_set_freq[2] = (unsigned char) N;
t->i2c_set_freq[3] = 0x40;
t->i2c_set_freq[4] = 0x52;
t->i2c_set_freq[5] = get_freq_entry(band_table, freq);
t->i2c_set_freq[6] = get_freq_entry(agc_table, freq);
t->i2c_set_freq[7] = 0x8f;
}
#define V4L2_STD_MN (V4L2_STD_PAL_M|V4L2_STD_PAL_N|V4L2_STD_PAL_Nc|V4L2_STD_NTSC)
#define V4L2_STD_B (V4L2_STD_PAL_B|V4L2_STD_PAL_B1|V4L2_STD_SECAM_B)
#define V4L2_STD_GH (V4L2_STD_PAL_G|V4L2_STD_PAL_H|V4L2_STD_SECAM_G|V4L2_STD_SECAM_H)
#define V4L2_STD_DK (V4L2_STD_PAL_DK|V4L2_STD_SECAM_DK)
static void set_audio(struct tuner *t)
{
t->i2c_easy_mode[0] = 0x01;
if (t->std & V4L2_STD_MN) {
t->sgIF = 736;
t->i2c_easy_mode[1] = 0x01;
} else if (t->std & V4L2_STD_B) {
t->sgIF = 864;
t->i2c_easy_mode[1] = 0x02;
} else if (t->std & V4L2_STD_GH) {
t->sgIF = 992;
t->i2c_easy_mode[1] = 0x04;
} else if (t->std & V4L2_STD_PAL_I) {
t->sgIF = 992;
t->i2c_easy_mode[1] = 0x08;
} else if (t->std & V4L2_STD_DK) {
t->sgIF = 992;
t->i2c_easy_mode[1] = 0x10;
} else if (t->std & V4L2_STD_SECAM_L) {
t->sgIF = 992;
t->i2c_easy_mode[1] = 0x20;
}
}
static void set_tv_freq(struct i2c_client *c, unsigned int freq)
{
struct tuner *t = i2c_get_clientdata(c);
set_audio(t);
set_frequency(t, t->sgIF, freq);
tda8290_tune(c);
}
static void set_radio_freq(struct i2c_client *c, unsigned int freq)
{
struct tuner *t = i2c_get_clientdata(c);
set_frequency(t, 704, freq);
tda8290_tune(c);
}
static int has_signal(struct i2c_client *c)
{
unsigned char i2c_get_afc[1] = { 0x1B };
unsigned char afc = 0;
i2c_master_send(c, i2c_get_afc, ARRAY_SIZE(i2c_get_afc));
i2c_master_recv(c, &afc, 1);
return (afc & 0x80)? 65535:0;
}
static void standby(struct i2c_client *c)
{
i2c_transfer(c->adapter, i2c_msg_standby, ARRAY_SIZE(i2c_msg_standby));
}
int tda8290_init(struct i2c_client *c)
{
struct tuner *t = i2c_get_clientdata(c);
strlcpy(c->name, "tda8290+75", sizeof(c->name));
tuner_info("tuner: type set to %s\n", c->name);
t->tv_freq = set_tv_freq;
t->radio_freq = set_radio_freq;
t->has_signal = has_signal;
t->standby = standby;
i2c_master_send(c, i2c_enable_bridge, ARRAY_SIZE(i2c_enable_bridge));
i2c_transfer(c->adapter, i2c_msg_init, ARRAY_SIZE(i2c_msg_init));
return 0;
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
|
