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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / media / i2c / sony-btf-mpx.c
blob32d82320b4854658702bd662820ea3aaa82b22e8
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 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software Foundation,
15 * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
16 */
17
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/i2c.h>
21 #include <linux/videodev2.h>
22 #include <media/tuner.h>
23 #include <media/v4l2-common.h>
24 #include <media/v4l2-ioctl.h>
25 #include <media/v4l2-device.h>
26 #include <linux/slab.h>
27
28 MODULE_DESCRIPTION("sony-btf-mpx driver");
29 MODULE_LICENSE("GPL v2");
30
31 static int debug;
32 module_param(debug, int, 0644);
33 MODULE_PARM_DESC(debug, "debug level 0=off(default) 1=on");
34
35 /* #define MPX_DEBUG */
36
37 /*
38 * Note:
39 *
40 * AS(IF/MPX) pin: LOW HIGH/OPEN
41 * IF/MPX address: 0x42/0x40 0x43/0x44
42 */
43
44
45 static int force_mpx_mode = -1;
46 module_param(force_mpx_mode, int, 0644);
47
48 struct sony_btf_mpx {
49 struct v4l2_subdev sd;
50 int mpxmode;
51 u32 audmode;
52 };
53
54 static inline struct sony_btf_mpx *to_state(struct v4l2_subdev *sd)
55 {
56 return container_of(sd, struct sony_btf_mpx, sd);
57 }
58
59 static int mpx_write(struct i2c_client *client, int dev, int addr, int val)
60 {
61 u8 buffer[5];
62 struct i2c_msg msg;
63
64 buffer[0] = dev;
65 buffer[1] = addr >> 8;
66 buffer[2] = addr & 0xff;
67 buffer[3] = val >> 8;
68 buffer[4] = val & 0xff;
69 msg.addr = client->addr;
70 msg.flags = 0;
71 msg.len = 5;
72 msg.buf = buffer;
73 i2c_transfer(client->adapter, &msg, 1);
74 return 0;
75 }
76
77 /*
78 * MPX register values for the BTF-PG472Z:
79 *
80 * FM_ NICAM_ SCART_
81 * MODUS SOURCE ACB PRESCAL PRESCAL PRESCAL SYSTEM VOLUME
82 * 10/0030 12/0008 12/0013 12/000E 12/0010 12/0000 10/0020 12/0000
83 * ---------------------------------------------------------------
84 * Auto 1003 0020 0100 2603 5000 XXXX 0001 7500
85 *
86 * B/G
87 * Mono 1003 0020 0100 2603 5000 XXXX 0003 7500
88 * A2 1003 0020 0100 2601 5000 XXXX 0003 7500
89 * NICAM 1003 0120 0100 2603 5000 XXXX 0008 7500
90 *
91 * I
92 * Mono 1003 0020 0100 2603 7900 XXXX 000A 7500
93 * NICAM 1003 0120 0100 2603 7900 XXXX 000A 7500
94 *
95 * D/K
96 * Mono 1003 0020 0100 2603 5000 XXXX 0004 7500
97 * A2-1 1003 0020 0100 2601 5000 XXXX 0004 7500
98 * A2-2 1003 0020 0100 2601 5000 XXXX 0005 7500
99 * A2-3 1003 0020 0100 2601 5000 XXXX 0007 7500
100 * NICAM 1003 0120 0100 2603 5000 XXXX 000B 7500
101 *
102 * L/L'
103 * Mono 0003 0200 0100 7C03 5000 2200 0009 7500
104 * NICAM 0003 0120 0100 7C03 5000 XXXX 0009 7500
105 *
106 * M
107 * Mono 1003 0200 0100 2B03 5000 2B00 0002 7500
108 *
109 * For Asia, replace the 0x26XX in FM_PRESCALE with 0x14XX.
110 *
111 * Bilingual selection in A2/NICAM:
112 *
113 * High byte of SOURCE Left chan Right chan
114 * 0x01 MAIN SUB
115 * 0x03 MAIN MAIN
116 * 0x04 SUB SUB
117 *
118 * Force mono in NICAM by setting the high byte of SOURCE to 0x02 (L/L') or
119 * 0x00 (all other bands). Force mono in A2 with FMONO_A2:
120 *
121 * FMONO_A2
122 * 10/0022
123 * --------
124 * Forced mono ON 07F0
125 * Forced mono OFF 0190
126 */
127
128 static const struct {
129 enum { AUD_MONO, AUD_A2, AUD_NICAM, AUD_NICAM_L } audio_mode;
130 u16 modus;
131 u16 source;
132 u16 acb;
133 u16 fm_prescale;
134 u16 nicam_prescale;
135 u16 scart_prescale;
136 u16 system;
137 u16 volume;
138 } mpx_audio_modes[] = {
139 /* Auto */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
140 0x5000, 0x0000, 0x0001, 0x7500 },
141 /* B/G Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
142 0x5000, 0x0000, 0x0003, 0x7500 },
143 /* B/G A2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
144 0x5000, 0x0000, 0x0003, 0x7500 },
145 /* B/G NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
146 0x5000, 0x0000, 0x0008, 0x7500 },
147 /* I Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
148 0x7900, 0x0000, 0x000A, 0x7500 },
149 /* I NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
150 0x7900, 0x0000, 0x000A, 0x7500 },
151 /* D/K Mono */ { AUD_MONO, 0x1003, 0x0020, 0x0100, 0x2603,
152 0x5000, 0x0000, 0x0004, 0x7500 },
153 /* D/K A2-1 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
154 0x5000, 0x0000, 0x0004, 0x7500 },
155 /* D/K A2-2 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
156 0x5000, 0x0000, 0x0005, 0x7500 },
157 /* D/K A2-3 */ { AUD_A2, 0x1003, 0x0020, 0x0100, 0x2601,
158 0x5000, 0x0000, 0x0007, 0x7500 },
159 /* D/K NICAM */ { AUD_NICAM, 0x1003, 0x0120, 0x0100, 0x2603,
160 0x5000, 0x0000, 0x000B, 0x7500 },
161 /* L/L' Mono */ { AUD_MONO, 0x0003, 0x0200, 0x0100, 0x7C03,
162 0x5000, 0x2200, 0x0009, 0x7500 },
163 /* L/L' NICAM */{ AUD_NICAM_L, 0x0003, 0x0120, 0x0100, 0x7C03,
164 0x5000, 0x0000, 0x0009, 0x7500 },
165 };
166
167 #define MPX_NUM_MODES ARRAY_SIZE(mpx_audio_modes)
168
169 static int mpx_setup(struct sony_btf_mpx *t)
170 {
171 struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
172 u16 source = 0;
173 u8 buffer[3];
174 struct i2c_msg msg;
175 int mode = t->mpxmode;
176
177 /* reset MPX */
178 buffer[0] = 0x00;
179 buffer[1] = 0x80;
180 buffer[2] = 0x00;
181 msg.addr = client->addr;
182 msg.flags = 0;
183 msg.len = 3;
184 msg.buf = buffer;
185 i2c_transfer(client->adapter, &msg, 1);
186 buffer[1] = 0x00;
187 i2c_transfer(client->adapter, &msg, 1);
188
189 if (t->audmode != V4L2_TUNER_MODE_MONO)
190 mode++;
191
192 if (mpx_audio_modes[mode].audio_mode != AUD_MONO) {
193 switch (t->audmode) {
194 case V4L2_TUNER_MODE_MONO:
195 switch (mpx_audio_modes[mode].audio_mode) {
196 case AUD_A2:
197 source = mpx_audio_modes[mode].source;
198 break;
199 case AUD_NICAM:
200 source = 0x0000;
201 break;
202 case AUD_NICAM_L:
203 source = 0x0200;
204 break;
205 default:
206 break;
207 }
208 break;
209 case V4L2_TUNER_MODE_STEREO:
210 source = mpx_audio_modes[mode].source;
211 break;
212 case V4L2_TUNER_MODE_LANG1:
213 source = 0x0300;
214 break;
215 case V4L2_TUNER_MODE_LANG2:
216 source = 0x0400;
217 break;
218 }
219 source |= mpx_audio_modes[mode].source & 0x00ff;
220 } else
221 source = mpx_audio_modes[mode].source;
222
223 mpx_write(client, 0x10, 0x0030, mpx_audio_modes[mode].modus);
224 mpx_write(client, 0x12, 0x0008, source);
225 mpx_write(client, 0x12, 0x0013, mpx_audio_modes[mode].acb);
226 mpx_write(client, 0x12, 0x000e,
227 mpx_audio_modes[mode].fm_prescale);
228 mpx_write(client, 0x12, 0x0010,
229 mpx_audio_modes[mode].nicam_prescale);
230 mpx_write(client, 0x12, 0x000d,
231 mpx_audio_modes[mode].scart_prescale);
232 mpx_write(client, 0x10, 0x0020, mpx_audio_modes[mode].system);
233 mpx_write(client, 0x12, 0x0000, mpx_audio_modes[mode].volume);
234 if (mpx_audio_modes[mode].audio_mode == AUD_A2)
235 mpx_write(client, 0x10, 0x0022,
236 t->audmode == V4L2_TUNER_MODE_MONO ? 0x07f0 : 0x0190);
237
238 #ifdef MPX_DEBUG
239 {
240 u8 buf1[3], buf2[2];
241 struct i2c_msg msgs[2];
242
243 v4l2_info(client,
244 "MPX registers: %04x %04x %04x %04x %04x %04x %04x %04x\n",
245 mpx_audio_modes[mode].modus,
246 source,
247 mpx_audio_modes[mode].acb,
248 mpx_audio_modes[mode].fm_prescale,
249 mpx_audio_modes[mode].nicam_prescale,
250 mpx_audio_modes[mode].scart_prescale,
251 mpx_audio_modes[mode].system,
252 mpx_audio_modes[mode].volume);
253 buf1[0] = 0x11;
254 buf1[1] = 0x00;
255 buf1[2] = 0x7e;
256 msgs[0].addr = client->addr;
257 msgs[0].flags = 0;
258 msgs[0].len = 3;
259 msgs[0].buf = buf1;
260 msgs[1].addr = client->addr;
261 msgs[1].flags = I2C_M_RD;
262 msgs[1].len = 2;
263 msgs[1].buf = buf2;
264 i2c_transfer(client->adapter, msgs, 2);
265 v4l2_info(client, "MPX system: %02x%02x\n",
266 buf2[0], buf2[1]);
267 buf1[0] = 0x11;
268 buf1[1] = 0x02;
269 buf1[2] = 0x00;
270 i2c_transfer(client->adapter, msgs, 2);
271 v4l2_info(client, "MPX status: %02x%02x\n",
272 buf2[0], buf2[1]);
273 }
274 #endif
275 return 0;
276 }
277
278
279 static int sony_btf_mpx_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
280 {
281 struct sony_btf_mpx *t = to_state(sd);
282 int default_mpx_mode = 0;
283
284 if (std & V4L2_STD_PAL_BG)
285 default_mpx_mode = 1;
286 else if (std & V4L2_STD_PAL_I)
287 default_mpx_mode = 4;
288 else if (std & V4L2_STD_PAL_DK)
289 default_mpx_mode = 6;
290 else if (std & V4L2_STD_SECAM_L)
291 default_mpx_mode = 11;
292
293 if (default_mpx_mode != t->mpxmode) {
294 t->mpxmode = default_mpx_mode;
295 mpx_setup(t);
296 }
297 return 0;
298 }
299
300 static int sony_btf_mpx_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
301 {
302 struct sony_btf_mpx *t = to_state(sd);
303
304 vt->capability = V4L2_TUNER_CAP_NORM |
305 V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LANG1 |
306 V4L2_TUNER_CAP_LANG2;
307 vt->rxsubchans = V4L2_TUNER_SUB_MONO |
308 V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_LANG1 |
309 V4L2_TUNER_SUB_LANG2;
310 vt->audmode = t->audmode;
311 return 0;
312 }
313
314 static int sony_btf_mpx_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
315 {
316 struct sony_btf_mpx *t = to_state(sd);
317
318 if (vt->type != V4L2_TUNER_ANALOG_TV)
319 return -EINVAL;
320
321 if (vt->audmode != t->audmode) {
322 t->audmode = vt->audmode;
323 mpx_setup(t);
324 }
325 return 0;
326 }
327
328 /* --------------------------------------------------------------------------*/
329
330 static const struct v4l2_subdev_core_ops sony_btf_mpx_core_ops = {
331 .s_std = sony_btf_mpx_s_std,
332 };
333
334 static const struct v4l2_subdev_tuner_ops sony_btf_mpx_tuner_ops = {
335 .s_tuner = sony_btf_mpx_s_tuner,
336 .g_tuner = sony_btf_mpx_g_tuner,
337 };
338
339 static const struct v4l2_subdev_ops sony_btf_mpx_ops = {
340 .core = &sony_btf_mpx_core_ops,
341 .tuner = &sony_btf_mpx_tuner_ops,
342 };
343
344 /* --------------------------------------------------------------------------*/
345
346 static int sony_btf_mpx_probe(struct i2c_client *client,
347 const struct i2c_device_id *id)
348 {
349 struct sony_btf_mpx *t;
350 struct v4l2_subdev *sd;
351
352 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
353 return -ENODEV;
354
355 v4l_info(client, "chip found @ 0x%x (%s)\n",
356 client->addr << 1, client->adapter->name);
357
358 t = devm_kzalloc(&client->dev, sizeof(*t), GFP_KERNEL);
359 if (t == NULL)
360 return -ENOMEM;
361
362 sd = &t->sd;
363 v4l2_i2c_subdev_init(sd, client, &sony_btf_mpx_ops);
364
365 /* Initialize sony_btf_mpx */
366 t->mpxmode = 0;
367 t->audmode = V4L2_TUNER_MODE_STEREO;
368
369 return 0;
370 }
371
372 static int sony_btf_mpx_remove(struct i2c_client *client)
373 {
374 struct v4l2_subdev *sd = i2c_get_clientdata(client);
375
376 v4l2_device_unregister_subdev(sd);
377
378 return 0;
379 }
380
381 /* ----------------------------------------------------------------------- */
382
383 static const struct i2c_device_id sony_btf_mpx_id[] = {
384 { "sony-btf-mpx", 0 },
385 { }
386 };
387 MODULE_DEVICE_TABLE(i2c, sony_btf_mpx_id);
388
389 static struct i2c_driver sony_btf_mpx_driver = {
390 .driver = {
391 .owner = THIS_MODULE,
392 .name = "sony-btf-mpx",
393 },
394 .probe = sony_btf_mpx_probe,
395 .remove = sony_btf_mpx_remove,
396 .id_table = sony_btf_mpx_id,
397 };
398 module_i2c_driver(sony_btf_mpx_driver);
Linux with added FPC-III support