2 * neo1973_gta02_wm8753.c -- SoC audio for Openmoko Freerunner(GTA02)
4 * Copyright 2007 Openmoko Inc
5 * Author: Graeme Gregory <graeme@openmoko.org>
6 * Copyright 2007 Wolfson Microelectronics PLC.
7 * Author: Graeme Gregory <linux@wolfsonmicro.com>
8 * Copyright 2009 Wolfson Microelectronics
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.
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/timer.h>
19 #include <linux/interrupt.h>
20 #include <linux/platform_device.h>
21 #include <linux/gpio.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/soc.h>
25 #include <sound/soc-dapm.h>
27 #include <asm/mach-types.h>
29 #include <plat/regs-iis.h>
31 #include <mach/regs-clock.h>
33 #include <mach/gta02.h>
34 #include "../codecs/wm8753.h"
36 #include "s3c24xx-i2s.h"
38 static struct snd_soc_card neo1973_gta02;
40 static int neo1973_gta02_hifi_hw_params(struct snd_pcm_substream *substream,
41 struct snd_pcm_hw_params *params)
43 struct snd_soc_pcm_runtime *rtd = substream->private_data;
44 struct snd_soc_dai *codec_dai = rtd->codec_dai;
45 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
46 unsigned int pll_out = 0, bclk = 0;
48 unsigned long iis_clkrate;
50 iis_clkrate = s3c24xx_i2s_get_clockrate();
52 switch (params_rate(params)) {
58 bclk = WM8753_BCLK_DIV_4;
62 bclk = WM8753_BCLK_DIV_2;
66 bclk = WM8753_BCLK_DIV_16;
70 bclk = WM8753_BCLK_DIV_8;
74 bclk = WM8753_BCLK_DIV_4;
78 bclk = WM8753_BCLK_DIV_2;
83 /* set codec DAI configuration */
84 ret = snd_soc_dai_set_fmt(codec_dai,
85 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
86 SND_SOC_DAIFMT_CBM_CFM);
90 /* set cpu DAI configuration */
91 ret = snd_soc_dai_set_fmt(cpu_dai,
92 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
93 SND_SOC_DAIFMT_CBM_CFM);
97 /* set the codec system clock for DAC and ADC */
98 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
103 /* set MCLK division for sample rate */
104 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
105 S3C2410_IISMOD_32FS);
109 /* set codec BCLK division for sample rate */
110 ret = snd_soc_dai_set_clkdiv(codec_dai,
111 WM8753_BCLKDIV, bclk);
115 /* set prescaler division for sample rate */
116 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
117 S3C24XX_PRESCALE(4, 4));
121 /* codec PLL input is PCLK/4 */
122 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
123 iis_clkrate / 4, pll_out);
130 static int neo1973_gta02_hifi_hw_free(struct snd_pcm_substream *substream)
132 struct snd_soc_pcm_runtime *rtd = substream->private_data;
133 struct snd_soc_dai *codec_dai = rtd->codec_dai;
135 /* disable the PLL */
136 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
140 * Neo1973 WM8753 HiFi DAI opserations.
142 static struct snd_soc_ops neo1973_gta02_hifi_ops = {
143 .hw_params = neo1973_gta02_hifi_hw_params,
144 .hw_free = neo1973_gta02_hifi_hw_free,
147 static int neo1973_gta02_voice_hw_params(
148 struct snd_pcm_substream *substream,
149 struct snd_pcm_hw_params *params)
151 struct snd_soc_pcm_runtime *rtd = substream->private_data;
152 struct snd_soc_dai *codec_dai = rtd->codec_dai;
153 unsigned int pcmdiv = 0;
155 unsigned long iis_clkrate;
157 iis_clkrate = s3c24xx_i2s_get_clockrate();
159 if (params_rate(params) != 8000)
161 if (params_channels(params) != 1)
164 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
166 /* todo: gg check mode (DSP_B) against CSR datasheet */
167 /* set codec DAI configuration */
168 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
169 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
173 /* set the codec system clock for DAC and ADC */
174 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK,
175 12288000, SND_SOC_CLOCK_IN);
179 /* set codec PCM division for sample rate */
180 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV,
185 /* configue and enable PLL for 12.288MHz output */
186 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
187 iis_clkrate / 4, 12288000);
194 static int neo1973_gta02_voice_hw_free(struct snd_pcm_substream *substream)
196 struct snd_soc_pcm_runtime *rtd = substream->private_data;
197 struct snd_soc_dai *codec_dai = rtd->codec_dai;
199 /* disable the PLL */
200 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
203 static struct snd_soc_ops neo1973_gta02_voice_ops = {
204 .hw_params = neo1973_gta02_voice_hw_params,
205 .hw_free = neo1973_gta02_voice_hw_free,
211 static u8 lm4853_state;
213 /* This has no effect, it exists only to maintain compatibility with
214 * existing ALSA state files.
216 static int lm4853_set_state(struct snd_kcontrol *kcontrol,
217 struct snd_ctl_elem_value *ucontrol)
219 int val = ucontrol->value.integer.value[0];
222 lm4853_state |= LM4853_AMP;
224 lm4853_state &= ~LM4853_AMP;
229 static int lm4853_get_state(struct snd_kcontrol *kcontrol,
230 struct snd_ctl_elem_value *ucontrol)
232 ucontrol->value.integer.value[0] = lm4853_state & LM4853_AMP;
237 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
238 struct snd_ctl_elem_value *ucontrol)
240 int val = ucontrol->value.integer.value[0];
243 lm4853_state |= LM4853_SPK;
244 gpio_set_value(GTA02_GPIO_HP_IN, 0);
246 lm4853_state &= ~LM4853_SPK;
247 gpio_set_value(GTA02_GPIO_HP_IN, 1);
253 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
254 struct snd_ctl_elem_value *ucontrol)
256 ucontrol->value.integer.value[0] = (lm4853_state & LM4853_SPK) >> 1;
261 static int lm4853_event(struct snd_soc_dapm_widget *w,
262 struct snd_kcontrol *k,
265 gpio_set_value(GTA02_GPIO_AMP_SHUT, SND_SOC_DAPM_EVENT_OFF(event));
270 static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
271 SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
272 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
273 SND_SOC_DAPM_LINE("GSM Line In", NULL),
274 SND_SOC_DAPM_MIC("Headset Mic", NULL),
275 SND_SOC_DAPM_MIC("Handset Mic", NULL),
276 SND_SOC_DAPM_SPK("Handset Spk", NULL),
280 /* example machine audio_mapnections */
281 static const struct snd_soc_dapm_route audio_map[] = {
283 /* Connections to the lm4853 amp */
284 {"Stereo Out", NULL, "LOUT1"},
285 {"Stereo Out", NULL, "ROUT1"},
287 /* Connections to the GSM Module */
288 {"GSM Line Out", NULL, "MONO1"},
289 {"GSM Line Out", NULL, "MONO2"},
290 {"RXP", NULL, "GSM Line In"},
291 {"RXN", NULL, "GSM Line In"},
293 /* Connections to Headset */
294 {"MIC1", NULL, "Mic Bias"},
295 {"Mic Bias", NULL, "Headset Mic"},
298 {"MIC2", NULL, "Mic Bias"},
299 {"MIC2N", NULL, "Mic Bias"},
300 {"Mic Bias", NULL, "Handset Mic"},
303 {"Handset Spk", NULL, "LOUT2"},
304 {"Handset Spk", NULL, "ROUT2"},
306 /* Connect the ALC pins */
307 {"ACIN", NULL, "ACOP"},
310 static const struct snd_kcontrol_new wm8753_neo1973_gta02_controls[] = {
311 SOC_DAPM_PIN_SWITCH("Stereo Out"),
312 SOC_DAPM_PIN_SWITCH("GSM Line Out"),
313 SOC_DAPM_PIN_SWITCH("GSM Line In"),
314 SOC_DAPM_PIN_SWITCH("Headset Mic"),
315 SOC_DAPM_PIN_SWITCH("Handset Mic"),
316 SOC_DAPM_PIN_SWITCH("Handset Spk"),
318 /* This has no effect, it exists only to maintain compatibility with
319 * existing ALSA state files.
321 SOC_SINGLE_EXT("Amp State Switch", 6, 0, 1, 0,
324 SOC_SINGLE_EXT("Amp Spk Switch", 7, 0, 1, 0,
330 * This is an example machine initialisation for a wm8753 connected to a
333 static int neo1973_gta02_wm8753_init(struct snd_soc_pcm_runtime *rtd)
335 struct snd_soc_codec *codec = rtd->codec;
338 /* set up NC codec pins */
339 snd_soc_dapm_nc_pin(codec, "OUT3");
340 snd_soc_dapm_nc_pin(codec, "OUT4");
341 snd_soc_dapm_nc_pin(codec, "LINE1");
342 snd_soc_dapm_nc_pin(codec, "LINE2");
344 /* Add neo1973 gta02 specific widgets */
345 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
346 ARRAY_SIZE(wm8753_dapm_widgets));
348 /* add neo1973 gta02 specific controls */
349 err = snd_soc_add_controls(codec, wm8753_neo1973_gta02_controls,
350 ARRAY_SIZE(wm8753_neo1973_gta02_controls));
355 /* set up neo1973 gta02 specific audio path audio_map */
356 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
358 /* set endpoints to default off mode */
359 snd_soc_dapm_disable_pin(codec, "Stereo Out");
360 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
361 snd_soc_dapm_disable_pin(codec, "GSM Line In");
362 snd_soc_dapm_disable_pin(codec, "Headset Mic");
363 snd_soc_dapm_disable_pin(codec, "Handset Mic");
364 snd_soc_dapm_disable_pin(codec, "Handset Spk");
366 /* allow audio paths from the GSM modem to run during suspend */
367 snd_soc_dapm_ignore_suspend(codec, "Stereo Out");
368 snd_soc_dapm_ignore_suspend(codec, "GSM Line Out");
369 snd_soc_dapm_ignore_suspend(codec, "GSM Line In");
370 snd_soc_dapm_ignore_suspend(codec, "Headset Mic");
371 snd_soc_dapm_ignore_suspend(codec, "Handset Mic");
372 snd_soc_dapm_ignore_suspend(codec, "Handset Spk");
374 snd_soc_dapm_sync(codec);
382 static struct snd_soc_dai_driver bt_dai = {
383 .name = "bluetooth-dai",
387 .rates = SNDRV_PCM_RATE_8000,
388 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
392 .rates = SNDRV_PCM_RATE_8000,
393 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
396 static struct snd_soc_dai_link neo1973_gta02_dai[] = {
397 { /* Hifi Playback - for similatious use with voice below */
399 .stream_name = "WM8753 HiFi",
400 .cpu_dai_name = "s3c24xx-i2s",
401 .codec_dai_name = "wm8753-hifi",
402 .init = neo1973_gta02_wm8753_init,
403 .platform_name = "s3c24xx-pcm-audio",
404 .codec_name = "wm8753-codec.0-0x1a",
405 .ops = &neo1973_gta02_hifi_ops,
409 .stream_name = "Voice",
410 .cpu_dai_name = "bluetooth-dai",
411 .codec_dai_name = "wm8753-voice",
412 .ops = &neo1973_gta02_voice_ops,
413 .codec_name = "wm8753-codec.0-0x1a",
414 .platform_name = "s3c24xx-pcm-audio",
418 static struct snd_soc_card neo1973_gta02 = {
419 .name = "neo1973-gta02",
420 .dai_link = neo1973_gta02_dai,
421 .num_links = ARRAY_SIZE(neo1973_gta02_dai),
424 static struct platform_device *neo1973_gta02_snd_device;
426 static int __init neo1973_gta02_init(void)
430 if (!machine_is_neo1973_gta02()) {
432 "Only GTA02 is supported by this ASoC driver\n");
436 neo1973_gta02_snd_device = platform_device_alloc("soc-audio", -1);
437 if (!neo1973_gta02_snd_device)
440 /* register bluetooth DAI here */
441 ret = snd_soc_register_dai(&neo1973_gta02_snd_device->dev, -1, &bt_dai);
443 platform_device_put(neo1973_gta02_snd_device);
447 platform_set_drvdata(neo1973_gta02_snd_device, &neo1973_gta02);
448 ret = platform_device_add(neo1973_gta02_snd_device);
451 platform_device_put(neo1973_gta02_snd_device);
455 /* Initialise GPIOs used by amp */
456 ret = gpio_request(GTA02_GPIO_HP_IN, "GTA02_HP_IN");
458 pr_err("gta02_wm8753: Failed to register GPIO %d\n", GTA02_GPIO_HP_IN);
459 goto err_unregister_device;
462 ret = gpio_direction_output(GTA02_GPIO_HP_IN, 1);
464 pr_err("gta02_wm8753: Failed to configure GPIO %d\n", GTA02_GPIO_HP_IN);
465 goto err_free_gpio_hp_in;
468 ret = gpio_request(GTA02_GPIO_AMP_SHUT, "GTA02_AMP_SHUT");
470 pr_err("gta02_wm8753: Failed to register GPIO %d\n", GTA02_GPIO_AMP_SHUT);
471 goto err_free_gpio_hp_in;
474 ret = gpio_direction_output(GTA02_GPIO_AMP_SHUT, 1);
476 pr_err("gta02_wm8753: Failed to configure GPIO %d\n", GTA02_GPIO_AMP_SHUT);
477 goto err_free_gpio_amp_shut;
482 err_free_gpio_amp_shut:
483 gpio_free(GTA02_GPIO_AMP_SHUT);
485 gpio_free(GTA02_GPIO_HP_IN);
486 err_unregister_device:
487 platform_device_unregister(neo1973_gta02_snd_device);
490 module_init(neo1973_gta02_init);
492 static void __exit neo1973_gta02_exit(void)
494 snd_soc_unregister_dai(&neo1973_gta02_snd_device->dev, -1);
495 platform_device_unregister(neo1973_gta02_snd_device);
496 gpio_free(GTA02_GPIO_HP_IN);
497 gpio_free(GTA02_GPIO_AMP_SHUT);
499 module_exit(neo1973_gta02_exit);
501 /* Module information */
502 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org");
503 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 GTA02");
504 MODULE_LICENSE("GPL");