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Linux/sound/soc/pxa/magician.c

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

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