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perf tools: Don't clone maps from parent when synthesizing forks
[linux/fpc-iii.git] / drivers / media / i2c / sony-btf-mpx.c
bloba9c067bcc0acd6ed24ac392fb914a2929c4741e8
1 /*
2 * Copyright (C) 2005-2006 Micronas USA Inc.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License (Version 2) as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13
14 #include <linux/module.h>
15 #include <linux/init.h>
16 #include <linux/i2c.h>
17 #include <linux/videodev2.h>
18 #include <media/tuner.h>
19 #include <media/v4l2-common.h>
20 #include <media/v4l2-ioctl.h>
21 #include <media/v4l2-device.h>
22 #include <linux/slab.h>
23
24 MODULE_DESCRIPTION("sony-btf-mpx driver");
25 MODULE_LICENSE("GPL v2");
26
27 static int debug;
28 module_param(debug, int, 0644);
29 MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on");
30
31 /* #define MPX_DEBUG */
32
33 /*
34 * Note:
35 *
36 * AS(IF/MPX) pin: LOW HIGH/OPEN
37 * IF/MPX address: 0x42/0x40 0x43/0x44
38 */
39
40
41 static int force_mpx_mode = -1;
42 module_param(force_mpx_mode, int, 0644);
43
44 struct sony_btf_mpx {
45 struct v4l2_subdev sd;
46 int mpxmode;
47 u32 audmode;
48 };
49
50 static inline struct sony_btf_mpx *to_state(struct v4l2_subdev *sd)
51 {
52 return container_of(sd, struct sony_btf_mpx, sd);
53 }
54
55 static int mpx_write(struct i2c_client *client, int dev, int addr, int val)
56 {
57 u8 buffer[5];
58 struct i2c_msg msg;
59
60 buffer[0] = dev;
61 buffer[1] = addr >> 8;
62 buffer[2] = addr & 0xff;
63 buffer[3] = val >> 8;
64 buffer[4] = val & 0xff;
65 msg.addr = client->addr;
66 msg.flags = 0;
67 msg.len = 5;
68 msg.buf = buffer;
69 i2c_transfer(client->adapter, &msg, 1);
70 return 0;
71 }
72
73 /*
74 * MPX register values for the BTF-PG472Z:
75 *
76 * FM_ NICAM_ SCART_
77 * MODUS SOURCE ACB PRESCAL PRESCAL PRESCAL SYSTEM VOLUME
78 * 10/0030 12/0008 12/0013 12/000E 12/0010 12/0000 10/0020 12/0000
79 * ---------------------------------------------------------------
80 * Auto 1003 0020 0100 2603 5000 XXXX 0001 7500
81 *
82 * B/G
83 * Mono 1003 0020 0100 2603 5000 XXXX 0003 7500
84 * A2 1003 0020 0100 2601 5000 XXXX 0003 7500
85 * NICAM 1003 0120 0100 2603 5000 XXXX 0008 7500
86 *
87 * I
88 * Mono 1003 0020 0100 2603 7900 XXXX 000A 7500
89 * NICAM 1003 0120 0100 2603 7900 XXXX 000A 7500
90 *
91 * D/K
92 * Mono 1003 0020 0100 2603 5000 XXXX 0004 7500
93 * A2-1 1003 0020 0100 2601 5000 XXXX 0004 7500
94 * A2-2 1003 0020 0100 2601 5000 XXXX 0005 7500
95 * A2-3 1003 0020 0100 2601 5000 XXXX 0007 7500
96 * NICAM 1003 0120 0100 2603 5000 XXXX 000B 7500
97 *
98 * L/L'
99 * Mono 0003 0200 0100 7C03 5000 2200 0009 7500
100 * NICAM 0003 0120 0100 7C03 5000 XXXX 0009 7500
101 *
102 * M
103 * Mono 1003 0200 0100 2B03 5000 2B00 0002 7500
104 *
105 * For Asia, replace the 0x26XX in FM_PRESCALE with 0x14XX.
106 *
107 * Bilingual selection in A2/NICAM:
108 *
109 * High byte of SOURCE Left chan Right chan
110 * 0x01 MAIN SUB
111 * 0x03 MAIN MAIN
112 * 0x04 SUB SUB
113 *
114 * Force mono in NICAM by setting the high byte of SOURCE to 0x02 (L/L') or
115 * 0x00 (all other bands). Force mono in A2 with FMONO_A2:
116 *
117 * FMONO_A2
118 * 10/0022
119 * --------
120 * Forced mono ON 07F0
121 * Forced mono OFF 0190
122 */
123
124 static const struct {
125 enum { AUD_MONO, AUD_A2, AUD_NICAM, AUD_NICAM_L } audio_mode;
126 u16 modus;
127 u16 source;
128 u16 acb;
129 u16 fm_prescale;
130 u16 nicam_prescale;
131 u16 scart_prescale;
132 u16 system;
133 u16 volume;
134 } mpx_audio_modes[] = {
135 /* Auto */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
136 0x5000, 0x0000, 0x0001, 0x7500 },
137 /* B/G Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
138 0x5000, 0x0000, 0x0003, 0x7500 },
139 /* B/G A2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
140 0x5000, 0x0000, 0x0003, 0x7500 },
141 /* B/G NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
142 0x5000, 0x0000, 0x0008, 0x7500 },
143 /* I Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
144 0x7900, 0x0000, 0x000A, 0x7500 },
145 /* I NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
146 0x7900, 0x0000, 0x000A, 0x7500 },
147 /* D/K Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
148 0x5000, 0x0000, 0x0004, 0x7500 },
149 /* D/K A2-1 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
150 0x5000, 0x0000, 0x0004, 0x7500 },
151 /* D/K A2-2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
152 0x5000, 0x0000, 0x0005, 0x7500 },
153 /* D/K A2-3 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
154 0x5000, 0x0000, 0x0007, 0x7500 },
155 /* D/K NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
156 0x5000, 0x0000, 0x000B, 0x7500 },
157 /* L/L' Mono */ { AUD_MONO, 0x0003, 0x0200, 0x0100, 0x7C03,
158 0x5000, 0x2200, 0x0009, 0x7500 },
159 /* L/L' NICAM */{ AUD_NICAM_L, 0x0003, 0x0120, 0x0100, 0x7C03,
160 0x5000, 0x0000, 0x0009, 0x7500 },
161 };
162
163 #define MPX_NUM_MODES ARRAY_SIZE(mpx_audio_modes)
164
165 static int mpx_setup(struct sony_btf_mpx *t)
166 {
167 struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
168 u16 source = 0;
169 u8 buffer[3];
170 struct i2c_msg msg;
171 int mode = t->mpxmode;
172
173 /* reset MPX */
174 buffer[0] = 0x00;
175 buffer[1] = 0x80;
176 buffer[2] = 0x00;
177 msg.addr = client->addr;
178 msg.flags = 0;
179 msg.len = 3;
180 msg.buf = buffer;
181 i2c_transfer(client->adapter, &msg, 1);
182 buffer[1] = 0x00;
183 i2c_transfer(client->adapter, &msg, 1);
184
185 if (t->audmode != V4L2_TUNER_MODE_MONO)
186 mode++;
187
188 if (mpx_audio_modes[mode].audio_mode != AUD_MONO) {
189 switch (t->audmode) {
190 case V4L2_TUNER_MODE_MONO:
191 switch (mpx_audio_modes[mode].audio_mode) {
192 case AUD_A2:
193 source = mpx_audio_modes[mode].source;
194 break;
195 case AUD_NICAM:
196 source = 0x0000;
197 break;
198 case AUD_NICAM_L:
199 source = 0x0200;
200 break;
201 default:
202 break;
203 }
204 break;
205 case V4L2_TUNER_MODE_STEREO:
206 source = mpx_audio_modes[mode].source;
207 break;
208 case V4L2_TUNER_MODE_LANG1:
209 source = 0x0300;
210 break;
211 case V4L2_TUNER_MODE_LANG2:
212 source = 0x0400;
213 break;
214 }
215 source |= mpx_audio_modes[mode].source & 0x00ff;
216 } else
217 source = mpx_audio_modes[mode].source;
218
219 mpx_write(client, 0x10, 0x0030, mpx_audio_modes[mode].modus);
220 mpx_write(client, 0x12, 0x0008, source);
221 mpx_write(client, 0x12, 0x0013, mpx_audio_modes[mode].acb);
222 mpx_write(client, 0x12, 0x000e,
223 mpx_audio_modes[mode].fm_prescale);
224 mpx_write(client, 0x12, 0x0010,
225 mpx_audio_modes[mode].nicam_prescale);
226 mpx_write(client, 0x12, 0x000d,
227 mpx_audio_modes[mode].scart_prescale);
228 mpx_write(client, 0x10, 0x0020, mpx_audio_modes[mode].system);
229 mpx_write(client, 0x12, 0x0000, mpx_audio_modes[mode].volume);
230 if (mpx_audio_modes[mode].audio_mode == AUD_A2)
231 mpx_write(client, 0x10, 0x0022,
232 t->audmode == V4L2_TUNER_MODE_MONO ? 0x07f0 : 0x0190);
233
234 #ifdef MPX_DEBUG
235 {
236 u8 buf1[3], buf2[2];
237 struct i2c_msg msgs[2];
238
239 v4l2_info(client,
240 "MPX registers: %04x %04x %04x %04x %04x %04x %04x %04x\n",
241 mpx_audio_modes[mode].modus,
242 source,
243 mpx_audio_modes[mode].acb,
244 mpx_audio_modes[mode].fm_prescale,
245 mpx_audio_modes[mode].nicam_prescale,
246 mpx_audio_modes[mode].scart_prescale,
247 mpx_audio_modes[mode].system,
248 mpx_audio_modes[mode].volume);
249 buf1[0] = 0x11;
250 buf1[1] = 0x00;
251 buf1[2] = 0x7e;
252 msgs[0].addr = client->addr;
253 msgs[0].flags = 0;
254 msgs[0].len = 3;
255 msgs[0].buf = buf1;
256 msgs[1].addr = client->addr;
257 msgs[1].flags = I2C_M_RD;
258 msgs[1].len = 2;
259 msgs[1].buf = buf2;
260 i2c_transfer(client->adapter, msgs, 2);
261 v4l2_info(client, "MPX system: %02x%02x\n",
262 buf2[0], buf2[1]);
263 buf1[0] = 0x11;
264 buf1[1] = 0x02;
265 buf1[2] = 0x00;
266 i2c_transfer(client->adapter, msgs, 2);
267 v4l2_info(client, "MPX status: %02x%02x\n",
268 buf2[0], buf2[1]);
269 }
270 #endif
271 return 0;
272 }
273
274
275 static int sony_btf_mpx_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
276 {
277 struct sony_btf_mpx *t = to_state(sd);
278 int default_mpx_mode = 0;
279
280 if (std & V4L2_STD_PAL_BG)
281 default_mpx_mode = 1;
282 else if (std & V4L2_STD_PAL_I)
283 default_mpx_mode = 4;
284 else if (std & V4L2_STD_PAL_DK)
285 default_mpx_mode = 6;
286 else if (std & V4L2_STD_SECAM_L)
287 default_mpx_mode = 11;
288
289 if (default_mpx_mode != t->mpxmode) {
290 t->mpxmode = default_mpx_mode;
291 mpx_setup(t);
292 }
293 return 0;
294 }
295
296 static int sony_btf_mpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
297 {
298 struct sony_btf_mpx *t = to_state(sd);
299
300 vt->capability = V4L2_TUNER_CAP_NORM |
301 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
302 V4L2_TUNER_CAP_LANG2;
303 vt->rxsubchans = V4L2_TUNER_SUB_MONO |
304 V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_LANG1 |
305 V4L2_TUNER_SUB_LANG2;
306 vt->audmode = t->audmode;
307 return 0;
308 }
309
310 static int sony_btf_mpx_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
311 {
312 struct sony_btf_mpx *t = to_state(sd);
313
314 if (vt->type != V4L2_TUNER_ANALOG_TV)
315 return -EINVAL;
316
317 if (vt->audmode != t->audmode) {
318 t->audmode = vt->audmode;
319 mpx_setup(t);
320 }
321 return 0;
322 }
323
324 /* --------------------------------------------------------------------------*/
325
326 static const struct v4l2_subdev_tuner_ops sony_btf_mpx_tuner_ops = {
327 .s_tuner = sony_btf_mpx_s_tuner,
328 .g_tuner = sony_btf_mpx_g_tuner,
329 };
330
331 static const struct v4l2_subdev_video_ops sony_btf_mpx_video_ops = {
332 .s_std = sony_btf_mpx_s_std,
333 };
334
335 static const struct v4l2_subdev_ops sony_btf_mpx_ops = {
336 .tuner = &sony_btf_mpx_tuner_ops,
337 .video = &sony_btf_mpx_video_ops,
338 };
339
340 /* --------------------------------------------------------------------------*/
341
342 static int sony_btf_mpx_probe(struct i2c_client *client,
343 const struct i2c_device_id *id)
344 {
345 struct sony_btf_mpx *t;
346 struct v4l2_subdev *sd;
347
348 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
349 return -ENODEV;
350
351 v4l_info(client, "chip found @ 0x%x (%s)\n",
352 client->addr << 1, client->adapter->name);
353
354 t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL);
355 if (t == NULL)
356 return -ENOMEM;
357
358 sd = &t->sd;
359 v4l2_i2c_subdev_init(sd, client, &sony_btf_mpx_ops);
360
361 /* Initialize sony_btf_mpx */
362 t->mpxmode = 0;
363 t->audmode = V4L2_TUNER_MODE_STEREO;
364
365 return 0;
366 }
367
368 static int sony_btf_mpx_remove(struct i2c_client *client)
369 {
370 struct v4l2_subdev *sd = i2c_get_clientdata(client);
371
372 v4l2_device_unregister_subdev(sd);
373
374 return 0;
375 }
376
377 /* ----------------------------------------------------------------------- */
378
379 static const struct i2c_device_id sony_btf_mpx_id[] = {
380 { "sony-btf-mpx", 0 },
381 { }
382 };
383 MODULE_DEVICE_TABLE(i2c, sony_btf_mpx_id);
384
385 static struct i2c_driver sony_btf_mpx_driver = {
386 .driver = {
387 .name = "sony-btf-mpx",
388 },
389 .probe = sony_btf_mpx_probe,
390 .remove = sony_btf_mpx_remove,
391 .id_table = sony_btf_mpx_id,
392 };
393 module_i2c_driver(sony_btf_mpx_driver);
Linux with added FPC-III support