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
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
|
/*
* cx18 I2C functions
*
* Derived from ivtv-i2c.c
*
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
* Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
*
* 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, or
* (at your option) any later version.
*
* 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 "cx18-driver.h"
#include "cx18-io.h"
#include "cx18-cards.h"
#include "cx18-gpio.h"
#include "cx18-i2c.h"
#include "cx18-irq.h"
#define CX18_REG_I2C_1_WR 0xf15000
#define CX18_REG_I2C_1_RD 0xf15008
#define CX18_REG_I2C_2_WR 0xf25100
#define CX18_REG_I2C_2_RD 0xf25108
#define SETSCL_BIT 0x0001
#define SETSDL_BIT 0x0002
#define GETSCL_BIT 0x0004
#define GETSDL_BIT 0x0008
#define CX18_CS5345_I2C_ADDR 0x4c
#define CX18_Z8F0811_IR_TX_I2C_ADDR 0x70
#define CX18_Z8F0811_IR_RX_I2C_ADDR 0x71
/* This array should match the CX18_HW_ defines */
static const u8 hw_addrs[] = {
0, /* CX18_HW_TUNER */
0, /* CX18_HW_TVEEPROM */
CX18_CS5345_I2C_ADDR, /* CX18_HW_CS5345 */
0, /* CX18_HW_DVB */
0, /* CX18_HW_418_AV */
0, /* CX18_HW_GPIO_MUX */
0, /* CX18_HW_GPIO_RESET_CTRL */
CX18_Z8F0811_IR_TX_I2C_ADDR, /* CX18_HW_Z8F0811_IR_TX_HAUP */
CX18_Z8F0811_IR_RX_I2C_ADDR, /* CX18_HW_Z8F0811_IR_RX_HAUP */
};
/* This array should match the CX18_HW_ defines */
/* This might well become a card-specific array */
static const u8 hw_bus[] = {
1, /* CX18_HW_TUNER */
0, /* CX18_HW_TVEEPROM */
0, /* CX18_HW_CS5345 */
0, /* CX18_HW_DVB */
0, /* CX18_HW_418_AV */
0, /* CX18_HW_GPIO_MUX */
0, /* CX18_HW_GPIO_RESET_CTRL */
0, /* CX18_HW_Z8F0811_IR_TX_HAUP */
0, /* CX18_HW_Z8F0811_IR_RX_HAUP */
};
/* This array should match the CX18_HW_ defines */
static const char * const hw_devicenames[] = {
"tuner",
"tveeprom",
"cs5345",
"cx23418_DTV",
"cx23418_AV",
"gpio_mux",
"gpio_reset_ctrl",
"ir_tx_z8f0811_haup",
"ir_rx_z8f0811_haup",
};
static int cx18_i2c_new_ir(struct cx18 *cx, struct i2c_adapter *adap, u32 hw,
const char *type, u8 addr)
{
struct i2c_board_info info;
struct IR_i2c_init_data *init_data = &cx->ir_i2c_init_data;
unsigned short addr_list[2] = { addr, I2C_CLIENT_END };
memset(&info, 0, sizeof(struct i2c_board_info));
strlcpy(info.type, type, I2C_NAME_SIZE);
/* Our default information for ir-kbd-i2c.c to use */
switch (hw) {
case CX18_HW_Z8F0811_IR_RX_HAUP:
init_data->ir_codes = RC_MAP_HAUPPAUGE_NEW;
init_data->internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
init_data->type = IR_TYPE_RC5;
init_data->name = cx->card_name;
info.platform_data = init_data;
break;
}
return i2c_new_probed_device(adap, &info, addr_list, NULL) == NULL ?
-1 : 0;
}
int cx18_i2c_register(struct cx18 *cx, unsigned idx)
{
struct v4l2_subdev *sd;
int bus = hw_bus[idx];
struct i2c_adapter *adap = &cx->i2c_adap[bus];
const char *type = hw_devicenames[idx];
u32 hw = 1 << idx;
if (idx >= ARRAY_SIZE(hw_addrs))
return -1;
if (hw == CX18_HW_TUNER) {
/* special tuner group handling */
sd = v4l2_i2c_new_subdev(&cx->v4l2_dev,
adap, NULL, type, 0, cx->card_i2c->radio);
if (sd != NULL)
sd->grp_id = hw;
sd = v4l2_i2c_new_subdev(&cx->v4l2_dev,
adap, NULL, type, 0, cx->card_i2c->demod);
if (sd != NULL)
sd->grp_id = hw;
sd = v4l2_i2c_new_subdev(&cx->v4l2_dev,
adap, NULL, type, 0, cx->card_i2c->tv);
if (sd != NULL)
sd->grp_id = hw;
return sd != NULL ? 0 : -1;
}
if (hw & CX18_HW_IR_ANY)
return cx18_i2c_new_ir(cx, adap, hw, type, hw_addrs[idx]);
/* Is it not an I2C device or one we do not wish to register? */
if (!hw_addrs[idx])
return -1;
/* It's an I2C device other than an analog tuner or IR chip */
sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, adap, NULL, type, hw_addrs[idx],
NULL);
if (sd != NULL)
sd->grp_id = hw;
return sd != NULL ? 0 : -1;
}
/* Find the first member of the subdev group id in hw */
struct v4l2_subdev *cx18_find_hw(struct cx18 *cx, u32 hw)
{
struct v4l2_subdev *result = NULL;
struct v4l2_subdev *sd;
spin_lock(&cx->v4l2_dev.lock);
v4l2_device_for_each_subdev(sd, &cx->v4l2_dev) {
if (sd->grp_id == hw) {
result = sd;
break;
}
}
spin_unlock(&cx->v4l2_dev.lock);
return result;
}
static void cx18_setscl(void *data, int state)
{
struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR;
u32 r = cx18_read_reg(cx, addr);
if (state)
cx18_write_reg(cx, r | SETSCL_BIT, addr);
else
cx18_write_reg(cx, r & ~SETSCL_BIT, addr);
}
static void cx18_setsda(void *data, int state)
{
struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR;
u32 r = cx18_read_reg(cx, addr);
if (state)
cx18_write_reg(cx, r | SETSDL_BIT, addr);
else
cx18_write_reg(cx, r & ~SETSDL_BIT, addr);
}
static int cx18_getscl(void *data)
{
struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD;
return cx18_read_reg(cx, addr) & GETSCL_BIT;
}
static int cx18_getsda(void *data)
{
struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD;
return cx18_read_reg(cx, addr) & GETSDL_BIT;
}
/* template for i2c-bit-algo */
static struct i2c_adapter cx18_i2c_adap_template = {
.name = "cx18 i2c driver",
.algo = NULL, /* set by i2c-algo-bit */
.algo_data = NULL, /* filled from template */
.owner = THIS_MODULE,
};
#define CX18_SCL_PERIOD (10) /* usecs. 10 usec is period for a 100 KHz clock */
#define CX18_ALGO_BIT_TIMEOUT (2) /* seconds */
static struct i2c_algo_bit_data cx18_i2c_algo_template = {
.setsda = cx18_setsda,
.setscl = cx18_setscl,
.getsda = cx18_getsda,
.getscl = cx18_getscl,
.udelay = CX18_SCL_PERIOD/2, /* 1/2 clock period in usec*/
.timeout = CX18_ALGO_BIT_TIMEOUT*HZ /* jiffies */
};
/* init + register i2c algo-bit adapter */
int init_cx18_i2c(struct cx18 *cx)
{
int i, err;
CX18_DEBUG_I2C("i2c init\n");
for (i = 0; i < 2; i++) {
/* Setup algorithm for adapter */
memcpy(&cx->i2c_algo[i], &cx18_i2c_algo_template,
sizeof(struct i2c_algo_bit_data));
cx->i2c_algo_cb_data[i].cx = cx;
cx->i2c_algo_cb_data[i].bus_index = i;
cx->i2c_algo[i].data = &cx->i2c_algo_cb_data[i];
/* Setup adapter */
memcpy(&cx->i2c_adap[i], &cx18_i2c_adap_template,
sizeof(struct i2c_adapter));
cx->i2c_adap[i].algo_data = &
|