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ASoC: Optimize switch/case in magician.c
[deliverable/linux.git] / sound / soc / pxa / magician.c
CommitLineData
7377226c
PZ		 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
24#include <sound/core.h>
25#include <sound/pcm.h>
26#include <sound/pcm_params.h>
27#include <sound/soc.h>
28#include <sound/soc-dapm.h>
29
7377226c
PZ		 30#include <mach/magician.h>
31#include <asm/mach-types.h>
32#include "../codecs/uda1380.h"
33#include "pxa2xx-pcm.h"
34#include "pxa2xx-i2s.h"
35#include "pxa-ssp.h"
36
37#define MAGICIAN_MIC 0
38#define MAGICIAN_MIC_EXT 1
39
40static int magician_hp_switch;
41static int magician_spk_switch = 1;
42static int magician_in_sel = MAGICIAN_MIC;
43
44static void magician_ext_control(struct snd_soc_codec *codec)
45{
46 if (magician_spk_switch)
47 snd_soc_dapm_enable_pin(codec, "Speaker");
48 else
49 snd_soc_dapm_disable_pin(codec, "Speaker");
50 if (magician_hp_switch)
51 snd_soc_dapm_enable_pin(codec, "Headphone Jack");
52 else
53 snd_soc_dapm_disable_pin(codec, "Headphone Jack");
54
55 switch (magician_in_sel) {
56 case MAGICIAN_MIC:
57 snd_soc_dapm_disable_pin(codec, "Headset Mic");
58 snd_soc_dapm_enable_pin(codec, "Call Mic");
59 break;
60 case MAGICIAN_MIC_EXT:
61 snd_soc_dapm_disable_pin(codec, "Call Mic");
62 snd_soc_dapm_enable_pin(codec, "Headset Mic");
63 break;
64 }
65
66 snd_soc_dapm_sync(codec);
67}
68
69static int magician_startup(struct snd_pcm_substream *substream)
70{
71 struct snd_soc_pcm_runtime *rtd = substream->private_data;
72 struct snd_soc_codec *codec = rtd->socdev->card->codec;
73
74 /* check the jack status at stream startup */
75 magician_ext_control(codec);
76
77 return 0;
78}
79
80/*
81 * Magician uses SSP port for playback.
82 */
83static int magician_playback_hw_params(struct snd_pcm_substream *substream,
84 struct snd_pcm_hw_params *params)
85{
86 struct snd_soc_pcm_runtime *rtd = substream->private_data;
87 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
88 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
89 unsigned int acps, acds, width, rate;
90 unsigned int div4 = PXA_SSP_CLK_SCDB_4;
91 int ret = 0;
92
93 rate = params_rate(params);
94 width = snd_pcm_format_physical_width(params_format(params));
95
96 /*
97 * rate = SSPSCLK / (2 * width(16 or 32))
98 * SSPSCLK = (ACPS / ACDS) / SSPSCLKDIV(div4 or div1)
99 */
100 switch (params_rate(params)) {
101 case 8000:
102 /* off by a factor of 2: bug in the PXA27x audio clock? */
103 acps = 32842000;
104 switch (width) {
105 case 16:
106 /* 513156 Hz ~= _2_ * 8000 Hz * 32 (+0.23%) */
107 acds = PXA_SSP_CLK_AUDIO_DIV_16;
108 break;
2bf2778e 109 default: /* 32 */
7377226c
PZ		 110 /* 1026312 Hz ~= _2_ * 8000 Hz * 64 (+0.23%) */
111 acds = PXA_SSP_CLK_AUDIO_DIV_8;
112 }
113 break;
114 case 11025:
115 acps = 5622000;
116 switch (width) {
117 case 16:
118 /* 351375 Hz ~= 11025 Hz * 32 (-0.41%) */
119 acds = PXA_SSP_CLK_AUDIO_DIV_4;
120 break;
2bf2778e 121 default: /* 32 */
7377226c
PZ		 122 /* 702750 Hz ~= 11025 Hz * 64 (-0.41%) */
123 acds = PXA_SSP_CLK_AUDIO_DIV_2;
124 }
125 break;
126 case 22050:
127 acps = 5622000;
128 switch (width) {
129 case 16:
130 /* 702750 Hz ~= 22050 Hz * 32 (-0.41%) */
131 acds = PXA_SSP_CLK_AUDIO_DIV_2;
132 break;
2bf2778e 133 default: /* 32 */
7377226c
PZ		 134 /* 1405500 Hz ~= 22050 Hz * 64 (-0.41%) */
135 acds = PXA_SSP_CLK_AUDIO_DIV_1;
136 }
137 break;
138 case 44100:
139 acps = 5622000;
140 switch (width) {
141 case 16:
142 /* 1405500 Hz ~= 44100 Hz * 32 (-0.41%) */
143 acds = PXA_SSP_CLK_AUDIO_DIV_2;
144 break;
2bf2778e 145 default: /* 32 */
7377226c
PZ		 146 /* 2811000 Hz ~= 44100 Hz * 64 (-0.41%) */
147 acds = PXA_SSP_CLK_AUDIO_DIV_1;
148 }
149 break;
150 case 48000:
151 acps = 12235000;
152 switch (width) {
153 case 16:
154 /* 1529375 Hz ~= 48000 Hz * 32 (-0.44%) */
155 acds = PXA_SSP_CLK_AUDIO_DIV_2;
156 break;
2bf2778e 157 default: /* 32 */
7377226c
PZ		 158 /* 3058750 Hz ~= 48000 Hz * 64 (-0.44%) */
159 acds = PXA_SSP_CLK_AUDIO_DIV_1;
160 }
161 break;
162 case 96000:
2bf2778e 163 default:
7377226c
PZ		 164 acps = 12235000;
165 switch (width) {
166 case 16:
167 /* 3058750 Hz ~= 96000 Hz * 32 (-0.44%) */
168 acds = PXA_SSP_CLK_AUDIO_DIV_1;
169 break;
2bf2778e 170 default: /* 32 */
7377226c
PZ		 171 /* 6117500 Hz ~= 96000 Hz * 64 (-0.44%) */
172 acds = PXA_SSP_CLK_AUDIO_DIV_2;
173 div4 = PXA_SSP_CLK_SCDB_1;
174 break;
175 }
176 break;
177 }
178
179 /* set codec DAI configuration */
180 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_MSB |
181 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
182 if (ret < 0)
183 return ret;
184
185 /* set cpu DAI configuration */
186 ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
187 SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBS_CFS);
188 if (ret < 0)
189 return ret;
190
191 ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 1);
192 if (ret < 0)
193 return ret;
194
195 /* set audio clock as clock source */
196 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0,
197 SND_SOC_CLOCK_OUT);
198 if (ret < 0)
199 return ret;
200
201 /* set the SSP audio system clock ACDS divider */
202 ret = snd_soc_dai_set_clkdiv(cpu_dai,
203 PXA_SSP_AUDIO_DIV_ACDS, acds);
204 if (ret < 0)
205 return ret;
206
207 /* set the SSP audio system clock SCDB divider4 */
208 ret = snd_soc_dai_set_clkdiv(cpu_dai,
209 PXA_SSP_AUDIO_DIV_SCDB, div4);
210 if (ret < 0)
211 return ret;
212
213 /* set SSP audio pll clock */
214 ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, acps);
215 if (ret < 0)
216 return ret;
217
218 return 0;
219}
220
221/*
222 * Magician uses I2S for capture.
223 */
224static int magician_capture_hw_params(struct snd_pcm_substream *substream,
225 struct snd_pcm_hw_params *params)
226{
227 struct snd_soc_pcm_runtime *rtd = substream->private_data;
228 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
229 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
230 int ret = 0;
231
232 /* set codec DAI configuration */
233 ret = snd_soc_dai_set_fmt(codec_dai,
234 SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
235 SND_SOC_DAIFMT_CBS_CFS);
236 if (ret < 0)
237 return ret;
238
239 /* set cpu DAI configuration */
240 ret = snd_soc_dai_set_fmt(cpu_dai,
241 SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
242 SND_SOC_DAIFMT_CBS_CFS);
243 if (ret < 0)
244 return ret;
245
246 /* set the I2S system clock as output */
247 ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
248 SND_SOC_CLOCK_OUT);
249 if (ret < 0)
250 return ret;
251
252 return 0;
253}
254
255static struct snd_soc_ops magician_capture_ops = {
256 .startup = magician_startup,
257 .hw_params = magician_capture_hw_params,
258};
259
260static struct snd_soc_ops magician_playback_ops = {
261 .startup = magician_startup,
262 .hw_params = magician_playback_hw_params,
263};
264
265static int magician_get_hp(struct snd_kcontrol *kcontrol,
266 struct snd_ctl_elem_value *ucontrol)
267{
268 ucontrol->value.integer.value[0] = magician_hp_switch;
269 return 0;
270}
271
272static int magician_set_hp(struct snd_kcontrol *kcontrol,
273 struct snd_ctl_elem_value *ucontrol)
274{
275 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
276
277 if (magician_hp_switch == ucontrol->value.integer.value[0])
278 return 0;
279
280 magician_hp_switch = ucontrol->value.integer.value[0];
281 magician_ext_control(codec);
282 return 1;
283}
284
285static int magician_get_spk(struct snd_kcontrol *kcontrol,
286 struct snd_ctl_elem_value *ucontrol)
287{
288 ucontrol->value.integer.value[0] = magician_spk_switch;
289 return 0;
290}
291
292static int magician_set_spk(struct snd_kcontrol *kcontrol,
293 struct snd_ctl_elem_value *ucontrol)
294{
295 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
296
297 if (magician_spk_switch == ucontrol->value.integer.value[0])
298 return 0;
299
300 magician_spk_switch = ucontrol->value.integer.value[0];
301 magician_ext_control(codec);
302 return 1;
303}
304
305static int magician_get_input(struct snd_kcontrol *kcontrol,
306 struct snd_ctl_elem_value *ucontrol)
307{
308 ucontrol->value.integer.value[0] = magician_in_sel;
309 return 0;
310}
311
312static int magician_set_input(struct snd_kcontrol *kcontrol,
313 struct snd_ctl_elem_value *ucontrol)
314{
315 if (magician_in_sel == ucontrol->value.integer.value[0])
316 return 0;
317
318 magician_in_sel = ucontrol->value.integer.value[0];
319
320 switch (magician_in_sel) {
321 case MAGICIAN_MIC:
322 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 1);
323 break;
324 case MAGICIAN_MIC_EXT:
325 gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 0);
326 }
327
328 return 1;
329}
330
331static int magician_spk_power(struct snd_soc_dapm_widget *w,
332 struct snd_kcontrol *k, int event)
333{
334 gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, SND_SOC_DAPM_EVENT_ON(event));
335 return 0;
336}
337
338static int magician_hp_power(struct snd_soc_dapm_widget *w,
339 struct snd_kcontrol *k, int event)
340{
341 gpio_set_value(EGPIO_MAGICIAN_EP_POWER, SND_SOC_DAPM_EVENT_ON(event));
342 return 0;
343}
344
345static int magician_mic_bias(struct snd_soc_dapm_widget *w,
346 struct snd_kcontrol *k, int event)
347{
348 gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, SND_SOC_DAPM_EVENT_ON(event));
349 return 0;
350}
351
352/* magician machine dapm widgets */
353static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
354 SND_SOC_DAPM_HP("Headphone Jack", magician_hp_power),
355 SND_SOC_DAPM_SPK("Speaker", magician_spk_power),
356 SND_SOC_DAPM_MIC("Call Mic", magician_mic_bias),
357 SND_SOC_DAPM_MIC("Headset Mic", magician_mic_bias),
358};
359
360/* magician machine audio_map */
361static const struct snd_soc_dapm_route audio_map[] = {
362
363 /* Headphone connected to VOUTL, VOUTR */
364 {"Headphone Jack", NULL, "VOUTL"},
365 {"Headphone Jack", NULL, "VOUTR"},
366
367 /* Speaker connected to VOUTL, VOUTR */
368 {"Speaker", NULL, "VOUTL"},
369 {"Speaker", NULL, "VOUTR"},
370
371 /* Mics are connected to VINM */
372 {"VINM", NULL, "Headset Mic"},
373 {"VINM", NULL, "Call Mic"},
374};
375
376static const char *input_select[] = {"Call Mic", "Headset Mic"};
377static const struct soc_enum magician_in_sel_enum =
378 SOC_ENUM_SINGLE_EXT(2, input_select);
379
380static const struct snd_kcontrol_new uda1380_magician_controls[] = {
381 SOC_SINGLE_BOOL_EXT("Headphone Switch",
382 (unsigned long)&magician_hp_switch,
383 magician_get_hp, magician_set_hp),
384 SOC_SINGLE_BOOL_EXT("Speaker Switch",
385 (unsigned long)&magician_spk_switch,
386 magician_get_spk, magician_set_spk),
387 SOC_ENUM_EXT("Input Select", magician_in_sel_enum,
388 magician_get_input, magician_set_input),
389};
390
391/*
392 * Logic for a uda1380 as connected on a HTC Magician
393 */
394static int magician_uda1380_init(struct snd_soc_codec *codec)
395{
396 int err;
397
398 /* NC codec pins */
399 snd_soc_dapm_nc_pin(codec, "VOUTLHP");
400 snd_soc_dapm_nc_pin(codec, "VOUTRHP");
401
402 /* FIXME: is anything connected here? */
403 snd_soc_dapm_nc_pin(codec, "VINL");
404 snd_soc_dapm_nc_pin(codec, "VINR");
405
406 /* Add magician specific controls */
407 err = snd_soc_add_controls(codec, uda1380_magician_controls,
408 ARRAY_SIZE(uda1380_magician_controls));
409 if (err < 0)
410 return err;
411
412 /* Add magician specific widgets */
413 snd_soc_dapm_new_controls(codec, uda1380_dapm_widgets,
414 ARRAY_SIZE(uda1380_dapm_widgets));
415
416 /* Set up magician specific audio path interconnects */
417 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
418
419 snd_soc_dapm_sync(codec);
420 return 0;
421}
422
423/* magician digital audio interface glue - connects codec <--> CPU */
424static struct snd_soc_dai_link magician_dai[] = {
425{
426 .name = "uda1380",
427 .stream_name = "UDA1380 Playback",
428 .cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP1],
429 .codec_dai = &uda1380_dai[UDA1380_DAI_PLAYBACK],
430 .init = magician_uda1380_init,
431 .ops = &magician_playback_ops,
432},
433{
434 .name = "uda1380",
435 .stream_name = "UDA1380 Capture",
436 .cpu_dai = &pxa_i2s_dai,
437 .codec_dai = &uda1380_dai[UDA1380_DAI_CAPTURE],
438 .ops = &magician_capture_ops,
439}
440};
441
442/* magician audio machine driver */
443static struct snd_soc_card snd_soc_card_magician = {
444 .name = "Magician",
445 .dai_link = magician_dai,
446 .num_links = ARRAY_SIZE(magician_dai),
447 .platform = &pxa2xx_soc_platform,
448};
449
450/* magician audio private data */
451static struct uda1380_setup_data magician_uda1380_setup = {
452 .i2c_address = 0x18,
453 .dac_clk = UDA1380_DAC_CLK_WSPLL,
454};
455
456/* magician audio subsystem */
457static struct snd_soc_device magician_snd_devdata = {
458 .card = &snd_soc_card_magician,
459 .codec_dev = &soc_codec_dev_uda1380,
460 .codec_data = &magician_uda1380_setup,
461};
462
463static struct platform_device *magician_snd_device;
464
465static int __init magician_init(void)
466{
467 int ret;
468
469 if (!machine_is_magician())
470 return -ENODEV;
471
472 ret = gpio_request(EGPIO_MAGICIAN_CODEC_POWER, "CODEC_POWER");
473 if (ret)
474 goto err_request_power;
475 ret = gpio_request(EGPIO_MAGICIAN_CODEC_RESET, "CODEC_RESET");
476 if (ret)
477 goto err_request_reset;
478 ret = gpio_request(EGPIO_MAGICIAN_SPK_POWER, "SPK_POWER");
479 if (ret)
480 goto err_request_spk;
481 ret = gpio_request(EGPIO_MAGICIAN_EP_POWER, "EP_POWER");
482 if (ret)
483 goto err_request_ep;
484 ret = gpio_request(EGPIO_MAGICIAN_MIC_POWER, "MIC_POWER");
485 if (ret)
486 goto err_request_mic;
487 ret = gpio_request(EGPIO_MAGICIAN_IN_SEL0, "IN_SEL0");
488 if (ret)
489 goto err_request_in_sel0;
490 ret = gpio_request(EGPIO_MAGICIAN_IN_SEL1, "IN_SEL1");
491 if (ret)
492 goto err_request_in_sel1;
493
494 gpio_set_value(EGPIO_MAGICIAN_CODEC_POWER, 1);
495 gpio_set_value(EGPIO_MAGICIAN_IN_SEL0, 0);
496
497 /* we may need to have the clock running here - pH5 */
498 gpio_set_value(EGPIO_MAGICIAN_CODEC_RESET, 1);
499 udelay(5);
500 gpio_set_value(EGPIO_MAGICIAN_CODEC_RESET, 0);
501
502 magician_snd_device = platform_device_alloc("soc-audio", -1);
503 if (!magician_snd_device) {
504 ret = -ENOMEM;
505 goto err_pdev;
506 }
507
508 platform_set_drvdata(magician_snd_device, &magician_snd_devdata);
509 magician_snd_devdata.dev = &magician_snd_device->dev;
510 ret = platform_device_add(magician_snd_device);
511 if (ret) {
512 platform_device_put(magician_snd_device);
513 goto err_pdev;
514 }
515
516 return 0;
517
518err_pdev:
519 gpio_free(EGPIO_MAGICIAN_IN_SEL1);
520err_request_in_sel1:
521 gpio_free(EGPIO_MAGICIAN_IN_SEL0);
522err_request_in_sel0:
523 gpio_free(EGPIO_MAGICIAN_MIC_POWER);
524err_request_mic:
525 gpio_free(EGPIO_MAGICIAN_EP_POWER);
526err_request_ep:
527 gpio_free(EGPIO_MAGICIAN_SPK_POWER);
528err_request_spk:
529 gpio_free(EGPIO_MAGICIAN_CODEC_RESET);
530err_request_reset:
531 gpio_free(EGPIO_MAGICIAN_CODEC_POWER);
532err_request_power:
533 return ret;
534}
535
536static void __exit magician_exit(void)
537{
538 platform_device_unregister(magician_snd_device);
539
540 gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, 0);
541 gpio_set_value(EGPIO_MAGICIAN_EP_POWER, 0);
542 gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, 0);
543 gpio_set_value(EGPIO_MAGICIAN_CODEC_POWER, 0);
544
545 gpio_free(EGPIO_MAGICIAN_IN_SEL1);
546 gpio_free(EGPIO_MAGICIAN_IN_SEL0);
547 gpio_free(EGPIO_MAGICIAN_MIC_POWER);
548 gpio_free(EGPIO_MAGICIAN_EP_POWER);
549 gpio_free(EGPIO_MAGICIAN_SPK_POWER);
550 gpio_free(EGPIO_MAGICIAN_CODEC_RESET);
551 gpio_free(EGPIO_MAGICIAN_CODEC_POWER);
552}
553
554module_init(magician_init);
555module_exit(magician_exit);
556
557MODULE_AUTHOR("Philipp Zabel");
558MODULE_DESCRIPTION("ALSA SoC Magician");
559MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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