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
magician_ext_control(struct snd_soc_dapm_context * dapm)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
magician_startup(struct snd_pcm_substream * substream)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 */
magician_playback_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)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 */
magician_capture_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)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 const struct snd_soc_ops magician_capture_ops = {
259 .startup = magician_startup,
260 .hw_params = magician_capture_hw_params,
261 };
262
263 static const struct snd_soc_ops magician_playback_ops = {
264 .startup = magician_startup,
265 .hw_params = magician_playback_hw_params,
266 };
267
magician_get_hp(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)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
magician_set_hp(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)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
magician_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)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
magician_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)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
magician_get_input(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)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
magician_set_input(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)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
magician_spk_power(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)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
magician_hp_power(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)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
magician_mic_bias(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)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 * const 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
magician_init(void)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
magician_exit(void)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