Merge git://github.com/davem330/net
[deliverable/linux.git] / sound / soc / pxa / magician.c
1 /*
2 * SoC audio for HTC Magician
3 *
4 * Copyright (c) 2006 Philipp Zabel <philipp.zabel@gmail.com>
5 *
6 * based on spitz.c,
7 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
8 * Richard Purdie <richard@openedhand.com>
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 */
16
17 #include <linux/module.h>
18 #include <linux/timer.h>
19 #include <linux/interrupt.h>
20 #include <linux/platform_device.h>
21 #include <linux/delay.h>
22 #include <linux/gpio.h>
23 #include <linux/i2c.h>
24
25 #include <sound/core.h>
26 #include <sound/pcm.h>
27 #include <sound/pcm_params.h>
28 #include <sound/soc.h>
29 #include <sound/uda1380.h>
30
31 #include <mach/magician.h>
32 #include <asm/mach-types.h>
33 #include "../codecs/uda1380.h"
34 #include "pxa2xx-i2s.h"
35 #include "pxa-ssp.h"
36
37 #define MAGICIAN_MIC 0
38 #define MAGICIAN_MIC_EXT 1
39
40 static int magician_hp_switch;
41 static int magician_spk_switch = 1;
42 static int magician_in_sel = MAGICIAN_MIC;
43
44 static void magician_ext_control(struct snd_soc_codec *codec)
45 {
46 struct snd_soc_dapm_context *dapm = &codec->dapm;
47
48 if (magician_spk_switch)
49 snd_soc_dapm_enable_pin(dapm, "Speaker");
50 else
51 snd_soc_dapm_disable_pin(dapm, "Speaker");
52 if (magician_hp_switch)
53 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
54 else
55 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
56
57 switch (magician_in_sel) {
58 case MAGICIAN_MIC:
59 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
60 snd_soc_dapm_enable_pin(dapm, "Call Mic");
61 break;
62 case MAGICIAN_MIC_EXT:
63 snd_soc_dapm_disable_pin(dapm, "Call Mic");
64 snd_soc_dapm_enable_pin(dapm, "Headset Mic");
65 break;
66 }
67
68 snd_soc_dapm_sync(dapm);
69 }
70
71 static int magician_startup(struct snd_pcm_substream *substream)
72 {
73 struct snd_soc_pcm_runtime *rtd = substream->private_data;
74 struct snd_soc_codec *codec = rtd->codec;
75
76 mutex_lock(&codec->mutex);
77
78 /* check the jack status at stream startup */
79 magician_ext_control(codec);
80
81 mutex_unlock(&codec->mutex);
82
83 return 0;
84 }
85
86 /*
87 * Magician uses SSP port for playback.
88 */
89 static int magician_playback_hw_params(struct snd_pcm_substream *substream,
90 struct snd_pcm_hw_params *params)
91 {
92 struct snd_soc_pcm_runtime *rtd = substream->private_data;
93 struct snd_soc_dai *codec_dai = rtd->codec_dai;
94 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
95 unsigned int acps, acds, width, rate;
96 unsigned int div4 = PXA_SSP_CLK_SCDB_4;
97 int ret = 0;
98
99 rate = params_rate(params);
100 width = snd_pcm_format_physical_width(params_format(params));
101
102 /*
103 * rate = SSPSCLK / (2 * width(16 or 32))
104 * SSPSCLK = (ACPS / ACDS) / SSPSCLKDIV(div4 or div1)
105 */
106 switch (params_rate(params)) {
107 case 8000:
108 /* off by a factor of 2: bug in the PXA27x audio clock? */
109 acps = 32842000;
110 switch (width) {
111 case 16:
112 /* 513156 Hz ~= _2_ * 8000 Hz * 32 (+0.23%) */
113 acds = PXA_SSP_CLK_AUDIO_DIV_16;
114 break;
115 default: /* 32 */
116 /* 1026312 Hz ~= _2_ * 8000 Hz * 64 (+0.23%) */
117 acds = PXA_SSP_CLK_AUDIO_DIV_8;
118 }
119 break;
120 case 11025:
121 acps = 5622000;
122 switch (width) {
123 case 16:
124 /* 351375 Hz ~= 11025 Hz * 32 (-0.41%) */
125 acds = PXA_SSP_CLK_AUDIO_DIV_4;
126 break;
127 default: /* 32 */
128 /* 702750 Hz ~= 11025 Hz * 64 (-0.41%) */
129 acds = PXA_SSP_CLK_AUDIO_DIV_2;
130 }
131 break;
132 case 22050:
133 acps = 5622000;
134 switch (width) {
135 case 16:
136 /* 702750 Hz ~= 22050 Hz * 32 (-0.41%) */
137 acds = PXA_SSP_CLK_AUDIO_DIV_2;
138 break;
139 default: /* 32 */
140 /* 1405500 Hz ~= 22050 Hz * 64 (-0.41%) */
141 acds = PXA_SSP_CLK_AUDIO_DIV_1;
142 }
143 break;
144 case 44100:
145 acps = 5622000;
146 switch (width) {
147 case 16:
148 /* 1405500 Hz ~= 44100 Hz * 32 (-0.41%) */
149 acds = PXA_SSP_CLK_AUDIO_DIV_2;
150 break;
151 default: /* 32 */
152 /* 2811000 Hz ~= 44100 Hz * 64 (-0.41%) */
153 acds = PXA_SSP_CLK_AUDIO_DIV_1;
154 }
155 break;
156 case 48000:
157 acps = 12235000;
158 switch (width) {
159 case 16:
160 /* 1529375 Hz ~= 48000 Hz * 32 (-0.44%) */
161 acds = PXA_SSP_CLK_AUDIO_DIV_2;
162 break;
163 default: /* 32 */
164 /* 3058750 Hz ~= 48000 Hz * 64 (-0.44%) */
165 acds = PXA_SSP_CLK_AUDIO_DIV_1;
166 }
167 break;
168 case 96000:
169 default:
170 acps = 12235000;
171 switch (width) {
172 case 16:
173 /* 3058750 Hz ~= 96000 Hz * 32 (-0.44%) */
174 acds = PXA_SSP_CLK_AUDIO_DIV_1;
175 break;
176 default: /* 32 */
177 /* 6117500 Hz ~= 96000 Hz * 64 (-0.44%) */
178 acds = PXA_SSP_CLK_AUDIO_DIV_2;
179 div4 = PXA_SSP_CLK_SCDB_1;
180 break;
181 }
182 break;
183 }
184
185 /* set codec DAI configuration */
186 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_MSB |
187 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
188 if (ret < 0)
189 return ret;
190
191 /* set cpu DAI configuration */
192 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
193 SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_CBS_CFS);
194 if (ret < 0)
195 return ret;
196
197 ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 0, 1, width);
198 if (ret < 0)
199 return ret;
200
201 /* set audio clock as clock source */
202 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0,
203 SND_SOC_CLOCK_OUT);
204 if (ret < 0)
205 return ret;
206
207 /* set the SSP audio system clock ACDS divider */
208 ret = snd_soc_dai_set_clkdiv(cpu_dai,
209 PXA_SSP_AUDIO_DIV_ACDS, acds);
210 if (ret < 0)
211 return ret;
212
213 /* set the SSP audio system clock SCDB divider4 */
214 ret = snd_soc_dai_set_clkdiv(cpu_dai,
215 PXA_SSP_AUDIO_DIV_SCDB, div4);
216 if (ret < 0)
217 return ret;
218
219 /* set SSP audio pll clock */
220 ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, acps);
221 if (ret < 0)
222 return ret;
223
224 return 0;
225 }
226
227 /*
228 * Magician uses I2S for capture.
229 */
230 static int magician_capture_hw_params(struct snd_pcm_substream *substream,
231 struct snd_pcm_hw_params *params)
232 {
233 struct snd_soc_pcm_runtime *rtd = substream->private_data;
234 struct snd_soc_dai *codec_dai = rtd->codec_dai;
235 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
236 int ret = 0;
237
238 /* set codec DAI configuration */
239 ret = snd_soc_dai_set_fmt(codec_dai,
240 SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
241 SND_SOC_DAIFMT_CBS_CFS);
242 if (ret < 0)
243 return ret;
244
245 /* set cpu DAI configuration */
246 ret = snd_soc_dai_set_fmt(cpu_dai,
247 SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
248 SND_SOC_DAIFMT_CBS_CFS);
249 if (ret < 0)
250 return ret;
251
252 /* set the I2S system clock as output */
253 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
254 SND_SOC_CLOCK_OUT);
255 if (ret < 0)
256 return ret;
257
258 return 0;
259 }
260
261 static struct snd_soc_ops magician_capture_ops = {
262 .startup = magician_startup,
263 .hw_params = magician_capture_hw_params,
264 };
265
266 static struct snd_soc_ops magician_playback_ops = {
267 .startup = magician_startup,
268 .hw_params = magician_playback_hw_params,
269 };
270
271 static int magician_get_hp(struct snd_kcontrol *kcontrol,
272 struct snd_ctl_elem_value *ucontrol)
273 {
274 ucontrol->value.integer.value[0] = magician_hp_switch;
275 return 0;
276 }
277
278 static int magician_set_hp(struct snd_kcontrol *kcontrol,
279 struct snd_ctl_elem_value *ucontrol)
280 {
281 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
282
283 if (magician_hp_switch == ucontrol->value.integer.value[0])
284 return 0;
285
286 magician_hp_switch = ucontrol->value.integer.value[0];
287 magician_ext_control(codec);
288 return 1;
289 }
290
291 static int magician_get_spk(struct snd_kcontrol *kcontrol,
292 struct snd_ctl_elem_value *ucontrol)
293 {
294 ucontrol->value.integer.value[0] = magician_spk_switch;
295 return 0;
296 }
297
298 static int magician_set_spk(struct snd_kcontrol *kcontrol,
299 struct snd_ctl_elem_value *ucontrol)
300 {
301 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
302
303 if (magician_spk_switch == ucontrol->value.integer.value[0])
304 return 0;
305
306 magician_spk_switch = ucontrol->value.integer.value[0];
307 magician_ext_control(codec);
308 return 1;
309 }
310
311 static int magician_get_input(struct snd_kcontrol *kcontrol,
312 struct snd_ctl_elem_value *ucontrol)
313 {
314 ucontrol->value.integer.value[0] = magician_in_sel;
315 return 0;
316 }
317
318 static int magician_set_input(struct snd_kcontrol *kcontrol,
319 struct snd_ctl_elem_value *ucontrol)
320 {
321 if (magician_in_sel == ucontrol->value.integer.value[0])
322 return 0;
323
324 magician_in_sel = ucontrol->value.integer.value[0];
325
326 switch (magician_in_sel) {
327 case MAGICIAN_MIC:
328 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 1);
329 break;
330 case MAGICIAN_MIC_EXT:
331 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 0);
332 }
333
334 return 1;
335 }
336
337 static int magician_spk_power(struct snd_soc_dapm_widget *w,
338 struct snd_kcontrol *k, int event)
339 {
340 gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, SND_SOC_DAPM_EVENT_ON(event));
341 return 0;
342 }
343
344 static int magician_hp_power(struct snd_soc_dapm_widget *w,
345 struct snd_kcontrol *k, int event)
346 {
347 gpio_set_value(EGPIO_MAGICIAN_EP_POWER, SND_SOC_DAPM_EVENT_ON(event));
348 return 0;
349 }
350
351 static int magician_mic_bias(struct snd_soc_dapm_widget *w,
352 struct snd_kcontrol *k, int event)
353 {
354 gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, SND_SOC_DAPM_EVENT_ON(event));
355 return 0;
356 }
357
358 /* magician machine dapm widgets */
359 static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
360 SND_SOC_DAPM_HP("Headphone Jack", magician_hp_power),
361 SND_SOC_DAPM_SPK("Speaker", magician_spk_power),
362 SND_SOC_DAPM_MIC("Call Mic", magician_mic_bias),
363 SND_SOC_DAPM_MIC("Headset Mic", magician_mic_bias),
364 };
365
366 /* magician machine audio_map */
367 static const struct snd_soc_dapm_route audio_map[] = {
368
369 /* Headphone connected to VOUTL, VOUTR */
370 {"Headphone Jack", NULL, "VOUTL"},
371 {"Headphone Jack", NULL, "VOUTR"},
372
373 /* Speaker connected to VOUTL, VOUTR */
374 {"Speaker", NULL, "VOUTL"},
375 {"Speaker", NULL, "VOUTR"},
376
377 /* Mics are connected to VINM */
378 {"VINM", NULL, "Headset Mic"},
379 {"VINM", NULL, "Call Mic"},
380 };
381
382 static const char *input_select[] = {"Call Mic", "Headset Mic"};
383 static const struct soc_enum magician_in_sel_enum =
384 SOC_ENUM_SINGLE_EXT(2, input_select);
385
386 static const struct snd_kcontrol_new uda1380_magician_controls[] = {
387 SOC_SINGLE_BOOL_EXT("Headphone Switch",
388 (unsigned long)&magician_hp_switch,
389 magician_get_hp, magician_set_hp),
390 SOC_SINGLE_BOOL_EXT("Speaker Switch",
391 (unsigned long)&magician_spk_switch,
392 magician_get_spk, magician_set_spk),
393 SOC_ENUM_EXT("Input Select", magician_in_sel_enum,
394 magician_get_input, magician_set_input),
395 };
396
397 /*
398 * Logic for a uda1380 as connected on a HTC Magician
399 */
400 static int magician_uda1380_init(struct snd_soc_pcm_runtime *rtd)
401 {
402 struct snd_soc_codec *codec = rtd->codec;
403 struct snd_soc_dapm_context *dapm = &codec->dapm;
404 int err;
405
406 /* NC codec pins */
407 snd_soc_dapm_nc_pin(dapm, "VOUTLHP");
408 snd_soc_dapm_nc_pin(dapm, "VOUTRHP");
409
410 /* FIXME: is anything connected here? */
411 snd_soc_dapm_nc_pin(dapm, "VINL");
412 snd_soc_dapm_nc_pin(dapm, "VINR");
413
414 /* Add magician specific controls */
415 err = snd_soc_add_controls(codec, uda1380_magician_controls,
416 ARRAY_SIZE(uda1380_magician_controls));
417 if (err < 0)
418 return err;
419
420 /* Add magician specific widgets */
421 snd_soc_dapm_new_controls(dapm, uda1380_dapm_widgets,
422 ARRAY_SIZE(uda1380_dapm_widgets));
423
424 /* Set up magician specific audio path interconnects */
425 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
426
427 snd_soc_dapm_sync(dapm);
428 return 0;
429 }
430
431 /* magician digital audio interface glue - connects codec <--> CPU */
432 static struct snd_soc_dai_link magician_dai[] = {
433 {
434 .name = "uda1380",
435 .stream_name = "UDA1380 Playback",
436 .cpu_dai_name = "pxa-ssp-dai.0",
437 .codec_dai_name = "uda1380-hifi-playback",
438 .platform_name = "pxa-pcm-audio",
439 .codec_name = "uda1380-codec.0-0018",
440 .init = magician_uda1380_init,
441 .ops = &magician_playback_ops,
442 },
443 {
444 .name = "uda1380",
445 .stream_name = "UDA1380 Capture",
446 .cpu_dai_name = "pxa2xx-i2s",
447 .codec_dai_name = "uda1380-hifi-capture",
448 .platform_name = "pxa-pcm-audio",
449 .codec_name = "uda1380-codec.0-0018",
450 .ops = &magician_capture_ops,
451 }
452 };
453
454 /* magician audio machine driver */
455 static struct snd_soc_card snd_soc_card_magician = {
456 .name = "Magician",
457 .dai_link = magician_dai,
458 .num_links = ARRAY_SIZE(magician_dai),
459
460 };
461
462 static struct platform_device *magician_snd_device;
463
464 /*
465 * FIXME: move into magician board file once merged into the pxa tree
466 */
467 static struct uda1380_platform_data uda1380_info = {
468 .gpio_power = EGPIO_MAGICIAN_CODEC_POWER,
469 .gpio_reset = EGPIO_MAGICIAN_CODEC_RESET,
470 .dac_clk = UDA1380_DAC_CLK_WSPLL,
471 };
472
473 static struct i2c_board_info i2c_board_info[] = {
474 {
475 I2C_BOARD_INFO("uda1380", 0x18),
476 .platform_data = &uda1380_info,
477 },
478 };
479
480 static int __init magician_init(void)
481 {
482 int ret;
483 struct i2c_adapter *adapter;
484 struct i2c_client *client;
485
486 if (!machine_is_magician())
487 return -ENODEV;
488
489 adapter = i2c_get_adapter(0);
490 if (!adapter)
491 return -ENODEV;
492 client = i2c_new_device(adapter, i2c_board_info);
493 i2c_put_adapter(adapter);
494 if (!client)
495 return -ENODEV;
496
497 ret = gpio_request(EGPIO_MAGICIAN_SPK_POWER, "SPK_POWER");
498 if (ret)
499 goto err_request_spk;
500 ret = gpio_request(EGPIO_MAGICIAN_EP_POWER, "EP_POWER");
501 if (ret)
502 goto err_request_ep;
503 ret = gpio_request(EGPIO_MAGICIAN_MIC_POWER, "MIC_POWER");
504 if (ret)
505 goto err_request_mic;
506 ret = gpio_request(EGPIO_MAGICIAN_IN_SEL0, "IN_SEL0");
507 if (ret)
508 goto err_request_in_sel0;
509 ret = gpio_request(EGPIO_MAGICIAN_IN_SEL1, "IN_SEL1");
510 if (ret)
511 goto err_request_in_sel1;
512
513 gpio_set_value(EGPIO_MAGICIAN_IN_SEL0, 0);
514
515 magician_snd_device = platform_device_alloc("soc-audio", -1);
516 if (!magician_snd_device) {
517 ret = -ENOMEM;
518 goto err_pdev;
519 }
520
521 platform_set_drvdata(magician_snd_device, &snd_soc_card_magician);
522 ret = platform_device_add(magician_snd_device);
523 if (ret) {
524 platform_device_put(magician_snd_device);
525 goto err_pdev;
526 }
527
528 return 0;
529
530 err_pdev:
531 gpio_free(EGPIO_MAGICIAN_IN_SEL1);
532 err_request_in_sel1:
533 gpio_free(EGPIO_MAGICIAN_IN_SEL0);
534 err_request_in_sel0:
535 gpio_free(EGPIO_MAGICIAN_MIC_POWER);
536 err_request_mic:
537 gpio_free(EGPIO_MAGICIAN_EP_POWER);
538 err_request_ep:
539 gpio_free(EGPIO_MAGICIAN_SPK_POWER);
540 err_request_spk:
541 return ret;
542 }
543
544 static void __exit magician_exit(void)
545 {
546 platform_device_unregister(magician_snd_device);
547
548 gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, 0);
549 gpio_set_value(EGPIO_MAGICIAN_EP_POWER, 0);
550 gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, 0);
551
552 gpio_free(EGPIO_MAGICIAN_IN_SEL1);
553 gpio_free(EGPIO_MAGICIAN_IN_SEL0);
554 gpio_free(EGPIO_MAGICIAN_MIC_POWER);
555 gpio_free(EGPIO_MAGICIAN_EP_POWER);
556 gpio_free(EGPIO_MAGICIAN_SPK_POWER);
557 }
558
559 module_init(magician_init);
560 module_exit(magician_exit);
561
562 MODULE_AUTHOR("Philipp Zabel");
563 MODULE_DESCRIPTION("ALSA SoC Magician");
564 MODULE_LICENSE("GPL");
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