aboutsummaryrefslogtreecommitdiff
path: root/sound/soc/pxa/magician.c
blob: aace19e0fe2c217f734dbd0164b4d242a93be1d1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
/*
 * SoC audio for HTC Magician
 *
 * Copyright (c) 2006 Philipp Zabel <philipp.zabel@gmail.com>
 *
 * based on spitz.c,
 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
 *          Richard Purdie <richard@openedhand.com>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/i2c.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/uda1380.h>

#include <mach/magician.h>
#include <asm/mach-types.h>
#include "../codecs/uda1380.h"
#include "pxa2xx-i2s.h"
#include "pxa-ssp.h"

#define MAGICIAN_MIC       0
#define MAGICIAN_MIC_EXT   1

static int magician_hp_switch;
static int magician_spk_switch = 1;
static int magician_in_sel = MAGICIAN_MIC;

static void magician_ext_control(struct snd_soc_codec *codec)
{
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	if (magician_spk_switch)
		snd_soc_dapm_enable_pin(dapm, "Speaker");
	else
		snd_soc_dapm_disable_pin(dapm, "Speaker");
	if (magician_hp_switch)
		snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
	else
		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");

	switch (magician_in_sel) {
	case MAGICIAN_MIC:
		snd_soc_dapm_disable_pin(dapm, "Headset Mic");
		snd_soc_dapm_enable_pin(dapm, "Call Mic");
		break;
	case MAGICIAN_MIC_EXT:
		snd_soc_dapm_disable_pin(dapm, "Call Mic");
		snd_soc_dapm_enable_pin(dapm, "Headset Mic");
		break;
	}

	snd_soc_dapm_sync(dapm);
}

static int magician_startup(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_codec *codec = rtd->codec;

	mutex_lock(&codec->mutex);

	/* check the jack status at stream startup */
	magician_ext_control(codec);

	mutex_unlock(&codec->mutex);

	return 0;
}

/*
 * Magician uses SSP port for playback.
 */
static int magician_playback_hw_params(struct snd_pcm_substream *substream,
				       struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	unsigned int acps, acds, width;
	unsigned int div4 = PXA_SSP_CLK_SCDB_4;
	int ret = 0;

	width = snd_pcm_format_physical_width(params_format(params));

	/*
	 * rate = SSPSCLK / (2 * width(16 or 32))
	 * SSPSCLK = (ACPS / ACDS) / SSPSCLKDIV(div4 or div1)
	 */
	switch (params_rate(params)) {
	case 8000:
		/* off by a factor of 2: bug in the PXA27x audio clock? */
		acps = 32842000;
		switch (width) {
		case 16:
			/* 513156 Hz ~= _2_ * 8000 Hz * 32 (+0.23%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_16;
			break;
		default: /* 32 */
			/* 1026312 Hz ~= _2_ * 8000 Hz * 64 (+0.23%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_8;
		}
		break;
	case 11025:
		acps = 5622000;
		switch (width) {
		case 16:
			/* 351375 Hz ~= 11025 Hz * 32 (-0.41%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_4;
			break;
		default: /* 32 */
			/* 702750 Hz ~= 11025 Hz * 64 (-0.41%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_2;
		}
		break;
	case 22050:
		acps = 5622000;
		switch (width) {
		case 16:
			/* 702750 Hz ~= 22050 Hz * 32 (-0.41%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_2;
			break;
		default: /* 32 */
			/* 1405500 Hz ~= 22050 Hz * 64 (-0.41%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_1;
		}
		break;
	case 44100:
		acps = 5622000;
		switch (width) {
		case 16:
			/* 1405500 Hz ~= 44100 Hz * 32 (-0.41%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_2;
			break;
		default: /* 32 */
			/* 2811000 Hz ~= 44100 Hz * 64 (-0.41%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_1;
		}
		break;
	case 48000:
		acps = 12235000;
		switch (width) {
		case 16:
			/* 1529375 Hz ~= 48000 Hz * 32 (-0.44%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_2;
			break;
		default: /* 32 */
			/* 3058750 Hz ~= 48000 Hz * 64 (-0.44%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_1;
		}
		break;
	case 96000:
	default:
		acps = 12235000;
		switch (width) {
		case 16:
			/* 3058750 Hz ~= 96000 Hz * 32 (-0.44%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_1;
			break;
		default: /* 32 */
			/* 6117500 Hz ~= 96000 Hz * 64 (-0.44%) */
			acds = PXA_SSP_CLK_AUDIO_DIV_2;
			div4 = PXA_SSP_CLK_SCDB_1;
			break;
		}
		break;
	}

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_MSB |
			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
			SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_tdm_slot(cpu_dai, 1, 0, 1, width);
	if (ret < 0)
		return ret;

	/* set audio clock as clock source */
	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0,
			SND_SOC_CLOCK_OUT);
	if (ret < 0)
		return ret;

	/* set the SSP audio system clock ACDS divider */
	ret = snd_soc_dai_set_clkdiv(cpu_dai,
			PXA_SSP_AUDIO_DIV_ACDS, acds);
	if (ret < 0)
		return ret;

	/* set the SSP audio system clock SCDB divider4 */
	ret = snd_soc_dai_set_clkdiv(cpu_dai,
			PXA_SSP_AUDIO_DIV_SCDB, div4);
	if (ret < 0)
		return ret;

	/* set SSP audio pll clock */
	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, acps);
	if (ret < 0)
		return ret;

	return 0;
}

/*
 * Magician uses I2S for capture.
 */
static int magician_capture_hw_params(struct snd_pcm_substream *substream,
				      struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret = 0;

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai,
			SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
			SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai,
			SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
			SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	/* set the I2S system clock as output */
	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
			SND_SOC_CLOCK_OUT);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops magician_capture_ops = {
	.startup = magician_startup,
	.hw_params = magician_capture_hw_params,
};

static struct snd_soc_ops magician_playback_ops = {
	.startup = magician_startup,
	.hw_params = magician_playback_hw_params,
};

static int magician_get_hp(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.integer.value[0] = magician_hp_switch;
	return 0;
}

static int magician_set_hp(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);

	if (magician_hp_switch == ucontrol->value.integer.value[0])
		return 0;

	magician_hp_switch = ucontrol->value.integer.value[0];
	magician_ext_control(codec);
	return 1;
}

static int magician_get_spk(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.integer.value[0] = magician_spk_switch;
	return 0;
}

static int magician_set_spk(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);

	if (magician_spk_switch == ucontrol->value.integer.value[0])
		return 0;

	magician_spk_switch = ucontrol->value.integer.value[0];
	magician_ext_control(codec);
	return 1;
}

static int magician_get_input(struct snd_kcontrol *kcontrol,
			      struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.integer.value[0] = magician_in_sel;
	return 0;
}

static int magician_set_input(struct snd_kcontrol *kcontrol,
			      struct snd_ctl_elem_value *ucontrol)
{
	if (magician_in_sel == ucontrol->value.integer.value[0])
		return 0;

	magician_in_sel = ucontrol->value.integer.value[0];

	switch (magician_in_sel) {
	case MAGICIAN_MIC:
		gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 1);
		break;
	case MAGICIAN_MIC_EXT:
		gpio_set_value(EGPIO_MAGICIAN_IN_SEL1, 0);
	}

	return 1;
}

static int magician_spk_power(struct snd_soc_dapm_widget *w,
				struct snd_kcontrol *k, int event)
{
	gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, SND_SOC_DAPM_EVENT_ON(event));
	return 0;
}

static int magician_hp_power(struct snd_soc_dapm_widget *w,
				struct snd_kcontrol *k, int event)
{
	gpio_set_value(EGPIO_MAGICIAN_EP_POWER, SND_SOC_DAPM_EVENT_ON(event));
	return 0;
}

static int magician_mic_bias(struct snd_soc_dapm_widget *w,
				struct snd_kcontrol *k, int event)
{
	gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, SND_SOC_DAPM_EVENT_ON(event));
	return 0;
}

/* magician machine dapm widgets */
static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", magician_hp_power),
	SND_SOC_DAPM_SPK("Speaker", magician_spk_power),
	SND_SOC_DAPM_MIC("Call Mic", magician_mic_bias),
	SND_SOC_DAPM_MIC("Headset Mic", magician_mic_bias),
};

/* magician machine audio_map */
static const struct snd_soc_dapm_route audio_map[] = {

	/* Headphone connected to VOUTL, VOUTR */
	{"Headphone Jack", NULL, "VOUTL"},
	{"Headphone Jack", NULL, "VOUTR"},

	/* Speaker connected to VOUTL, VOUTR */
	{"Speaker", NULL, "VOUTL"},
	{"Speaker", NULL, "VOUTR"},

	/* Mics are connected to VINM */
	{"VINM", NULL, "Headset Mic"},
	{"VINM", NULL, "Call Mic"},
};

static const char *input_select[] = {"Call Mic", "Headset Mic"};
static const struct soc_enum magician_in_sel_enum =
	SOC_ENUM_SINGLE_EXT(2, input_select);

static const struct snd_kcontrol_new uda1380_magician_controls[] = {
	SOC_SINGLE_BOOL_EXT("Headphone Switch",
			(unsigned long)&magician_hp_switch,
			magician_get_hp, magician_set_hp),
	SOC_SINGLE_BOOL_EXT("Speaker Switch",
			(unsigned long)&magician_spk_switch,
			magician_get_spk, magician_set_spk),
	SOC_ENUM_EXT("Input Select", magician_in_sel_enum,
			magician_get_input, magician_set_input),
};

/*
 * Logic for a uda1380 as connected on a HTC Magician
 */
static int magician_uda1380_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int err;

	/* NC codec pins */
	snd_soc_dapm_nc_pin(dapm, "VOUTLHP");
	snd_soc_dapm_nc_pin(dapm, "VOUTRHP");

	/* FIXME: is anything connected here? */
	snd_soc_dapm_nc_pin(dapm, "VINL");
	snd_soc_dapm_nc_pin(dapm, "VINR");

	/* Add magician specific controls */
	err = snd_soc_add_codec_controls(codec, uda1380_magician_controls,
				ARRAY_SIZE(uda1380_magician_controls));
	if (err < 0)
		return err;

	/* Add magician specific widgets */
	snd_soc_dapm_new_controls(dapm, uda1380_dapm_widgets,
				  ARRAY_SIZE(uda1380_dapm_widgets));

	/* Set up magician specific audio path interconnects */
	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));

	return 0;
}

/* magician digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link magician_dai[] = {
{
	.name = "uda1380",
	.stream_name = "UDA1380 Playback",
	.cpu_dai_name = "pxa-ssp-dai.0",
	.codec_dai_name = "uda1380-hifi-playback",
	.platform_name = "pxa-pcm-audio",
	.codec_name = "uda1380-codec.0-0018",
	.init = magician_uda1380_init,
	.ops = &magician_playback_ops,
},
{
	.name = "uda1380",
	.stream_name = "UDA1380 Capture",
	.cpu_dai_name = "pxa2xx-i2s",
	.codec_dai_name = "uda1380-hifi-capture",
	.platform_name = "pxa-pcm-audio",
	.codec_name = "uda1380-codec.0-0018",
	.ops = &magician_capture_ops,
}
};

/* magician audio machine driver */
static struct snd_soc_card snd_soc_card_magician = {
	.name = "Magician",
	.owner = THIS_MODULE,
	.dai_link = magician_dai,
	.num_links = ARRAY_SIZE(magician_dai),

};

static struct platform_device *magician_snd_device;

/*
 * FIXME: move into magician board file once merged into the pxa tree
 */
static struct uda1380_platform_data uda1380_info = {
	.gpio_power = EGPIO_MAGICIAN_CODEC_POWER,
	.gpio_reset = EGPIO_MAGICIAN_CODEC_RESET,
	.dac_clk    = UDA1380_DAC_CLK_WSPLL,
};

static struct i2c_board_info i2c_board_info[] = {
	{
		I2C_BOARD_INFO("uda1380", 0x18),
		.platform_data = &uda1380_info,
	},
};

static int __init magician_init(void)
{
	int ret;
	struct i2c_adapter *adapter;
	struct i2c_client *client;

	if (!machine_is_magician())
		return -ENODEV;

	adapter = i2c_get_adapter(0);
	if (!adapter)
		return -ENODEV;
	client = i2c_new_device(adapter, i2c_board_info);
	i2c_put_adapter(adapter);
	if (!client)
		return -ENODEV;

	ret = gpio_request(EGPIO_MAGICIAN_SPK_POWER, "SPK_POWER");
	if (ret)
		goto err_request_spk;
	ret = gpio_request(EGPIO_MAGICIAN_EP_POWER, "EP_POWER");
	if (ret)
		goto err_request_ep;
	ret = gpio_request(EGPIO_MAGICIAN_MIC_POWER, "MIC_POWER");
	if (ret)
		goto err_request_mic;
	ret = gpio_request(EGPIO_MAGICIAN_IN_SEL0, "IN_SEL0");
	if (ret)
		goto err_request_in_sel0;
	ret = gpio_request(EGPIO_MAGICIAN_IN_SEL1, "IN_SEL1");
	if (ret)
		goto err_request_in_sel1;

	gpio_set_value(EGPIO_MAGICIAN_IN_SEL0, 0);

	magician_snd_device = platform_device_alloc("soc-audio", -1);
	if (!magician_snd_device) {
		ret = -ENOMEM;
		goto err_pdev;
	}

	platform_set_drvdata(magician_snd_device, &snd_soc_card_magician);
	ret = platform_device_add(magician_snd_device);
	if (ret) {
		platform_device_put(magician_snd_device);
		goto err_pdev;
	}

	return 0;

err_pdev:
	gpio_free(EGPIO_MAGICIAN_IN_SEL1);
err_request_in_sel1:
	gpio_free(EGPIO_MAGICIAN_IN_SEL0);
err_request_in_sel0:
	gpio_free(EGPIO_MAGICIAN_MIC_POWER);
err_request_mic:
	gpio_free(EGPIO_MAGICIAN_EP_POWER);
err_request_ep:
	gpio_free(EGPIO_MAGICIAN_SPK_POWER);
err_request_spk:
	return ret;
}

static void __exit magician_exit(void)
{
	platform_device_unregister(magician_snd_device);

	gpio_set_value(EGPIO_MAGICIAN_SPK_POWER, 0);
	gpio_set_value(EGPIO_MAGICIAN_EP_POWER, 0);
	gpio_set_value(EGPIO_MAGICIAN_MIC_POWER, 0);

	gpio_free(EGPIO_MAGICIAN_IN_SEL1);
	gpio_free(EGPIO_MAGICIAN_IN_SEL0);
	gpio_free(EGPIO_MAGICIAN_MIC_POWER);
	gpio_free(EGPIO_MAGICIAN_EP_POWER);
	gpio_free(EGPIO_MAGICIAN_SPK_POWER);
}

module_init(magician_init);
module_exit(magician_exit);

MODULE_AUTHOR("Philipp Zabel");
MODULE_DESCRIPTION("ALSA SoC Magician");
MODULE_LICENSE("GPL");