2 * neo1973_wm8753.c -- SoC audio for Openmoko Neo1973 and Freerunner devices
4 * Copyright 2007 Openmoko Inc
5 * Author: Graeme Gregory <graeme@openmoko.org>
6 * Copyright 2007 Wolfson Microelectronics PLC.
7 * Author: Graeme Gregory
8 * graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
9 * Copyright 2009 Wolfson Microelectronics
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
17 #include <linux/module.h>
18 #include <linux/platform_device.h>
19 #include <linux/gpio.h>
21 #include <sound/soc.h>
23 #include <asm/mach-types.h>
24 #include <plat/regs-iis.h>
25 #include <mach/gta02.h>
27 #include "../codecs/wm8753.h"
28 #include "s3c24xx-i2s.h"
30 static int neo1973_hifi_hw_params(struct snd_pcm_substream *substream,
31 struct snd_pcm_hw_params *params)
33 struct snd_soc_pcm_runtime *rtd = substream->private_data;
34 struct snd_soc_dai *codec_dai = rtd->codec_dai;
35 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
36 unsigned int pll_out = 0, bclk = 0;
38 unsigned long iis_clkrate;
40 iis_clkrate = s3c24xx_i2s_get_clockrate();
42 switch (params_rate(params)) {
48 bclk = WM8753_BCLK_DIV_4;
52 bclk = WM8753_BCLK_DIV_2;
56 bclk = WM8753_BCLK_DIV_16;
60 bclk = WM8753_BCLK_DIV_8;
64 bclk = WM8753_BCLK_DIV_4;
68 bclk = WM8753_BCLK_DIV_2;
73 /* set codec DAI configuration */
74 ret = snd_soc_dai_set_fmt(codec_dai,
75 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
76 SND_SOC_DAIFMT_CBM_CFM);
80 /* set cpu DAI configuration */
81 ret = snd_soc_dai_set_fmt(cpu_dai,
82 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
83 SND_SOC_DAIFMT_CBM_CFM);
87 /* set the codec system clock for DAC and ADC */
88 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
93 /* set MCLK division for sample rate */
94 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
99 /* set codec BCLK division for sample rate */
100 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
104 /* set prescaler division for sample rate */
105 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
106 S3C24XX_PRESCALE(4, 4));
110 /* codec PLL input is PCLK/4 */
111 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
112 iis_clkrate / 4, pll_out);
119 static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
121 struct snd_soc_pcm_runtime *rtd = substream->private_data;
122 struct snd_soc_dai *codec_dai = rtd->codec_dai;
124 /* disable the PLL */
125 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
129 * Neo1973 WM8753 HiFi DAI opserations.
131 static struct snd_soc_ops neo1973_hifi_ops = {
132 .hw_params = neo1973_hifi_hw_params,
133 .hw_free = neo1973_hifi_hw_free,
136 static int neo1973_voice_hw_params(struct snd_pcm_substream *substream,
137 struct snd_pcm_hw_params *params)
139 struct snd_soc_pcm_runtime *rtd = substream->private_data;
140 struct snd_soc_dai *codec_dai = rtd->codec_dai;
141 unsigned int pcmdiv = 0;
143 unsigned long iis_clkrate;
145 iis_clkrate = s3c24xx_i2s_get_clockrate();
147 if (params_rate(params) != 8000)
149 if (params_channels(params) != 1)
152 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
154 /* todo: gg check mode (DSP_B) against CSR datasheet */
155 /* set codec DAI configuration */
156 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
157 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
161 /* set the codec system clock for DAC and ADC */
162 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
167 /* set codec PCM division for sample rate */
168 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
172 /* configure and enable PLL for 12.288MHz output */
173 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
174 iis_clkrate / 4, 12288000);
181 static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
183 struct snd_soc_pcm_runtime *rtd = substream->private_data;
184 struct snd_soc_dai *codec_dai = rtd->codec_dai;
186 /* disable the PLL */
187 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
190 static struct snd_soc_ops neo1973_voice_ops = {
191 .hw_params = neo1973_voice_hw_params,
192 .hw_free = neo1973_voice_hw_free,
195 /* Shared routes and controls */
197 static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
198 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
199 SND_SOC_DAPM_LINE("GSM Line In", NULL),
200 SND_SOC_DAPM_MIC("Headset Mic", NULL),
201 SND_SOC_DAPM_MIC("Handset Mic", NULL),
204 static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
205 /* Connections to the GSM Module */
206 {"GSM Line Out", NULL, "MONO1"},
207 {"GSM Line Out", NULL, "MONO2"},
208 {"RXP", NULL, "GSM Line In"},
209 {"RXN", NULL, "GSM Line In"},
211 /* Connections to Headset */
212 {"MIC1", NULL, "Mic Bias"},
213 {"Mic Bias", NULL, "Headset Mic"},
216 {"MIC2", NULL, "Mic Bias"},
217 {"MIC2N", NULL, "Mic Bias"},
218 {"Mic Bias", NULL, "Handset Mic"},
220 /* Connect the ALC pins */
221 {"ACIN", NULL, "ACOP"},
224 static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
225 SOC_DAPM_PIN_SWITCH("GSM Line Out"),
226 SOC_DAPM_PIN_SWITCH("GSM Line In"),
227 SOC_DAPM_PIN_SWITCH("Headset Mic"),
228 SOC_DAPM_PIN_SWITCH("Handset Mic"),
231 /* GTA02 specific routes and controls */
233 static int gta02_speaker_enabled;
235 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
236 struct snd_ctl_elem_value *ucontrol)
238 gta02_speaker_enabled = ucontrol->value.integer.value[0];
240 gpio_set_value(GTA02_GPIO_HP_IN, !gta02_speaker_enabled);
245 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
246 struct snd_ctl_elem_value *ucontrol)
248 ucontrol->value.integer.value[0] = gta02_speaker_enabled;
252 static int lm4853_event(struct snd_soc_dapm_widget *w,
253 struct snd_kcontrol *k, int event)
255 gpio_set_value(GTA02_GPIO_AMP_SHUT, SND_SOC_DAPM_EVENT_OFF(event));
260 static const struct snd_soc_dapm_route neo1973_gta02_routes[] = {
261 /* Connections to the amp */
262 {"Stereo Out", NULL, "LOUT1"},
263 {"Stereo Out", NULL, "ROUT1"},
266 {"Handset Spk", NULL, "LOUT2"},
267 {"Handset Spk", NULL, "ROUT2"},
270 static const struct snd_kcontrol_new neo1973_gta02_wm8753_controls[] = {
271 SOC_DAPM_PIN_SWITCH("Handset Spk"),
272 SOC_DAPM_PIN_SWITCH("Stereo Out"),
274 SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
279 static const struct snd_soc_dapm_widget neo1973_gta02_wm8753_dapm_widgets[] = {
280 SND_SOC_DAPM_SPK("Handset Spk", NULL),
281 SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
284 static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec)
286 struct snd_soc_dapm_context *dapm = &codec->dapm;
289 ret = snd_soc_dapm_new_controls(dapm, neo1973_gta02_wm8753_dapm_widgets,
290 ARRAY_SIZE(neo1973_gta02_wm8753_dapm_widgets));
294 ret = snd_soc_dapm_add_routes(dapm, neo1973_gta02_routes,
295 ARRAY_SIZE(neo1973_gta02_routes));
299 ret = snd_soc_add_card_controls(codec->card, neo1973_gta02_wm8753_controls,
300 ARRAY_SIZE(neo1973_gta02_wm8753_controls));
304 snd_soc_dapm_disable_pin(dapm, "Stereo Out");
305 snd_soc_dapm_disable_pin(dapm, "Handset Spk");
306 snd_soc_dapm_ignore_suspend(dapm, "Stereo Out");
307 snd_soc_dapm_ignore_suspend(dapm, "Handset Spk");
312 static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
314 struct snd_soc_codec *codec = rtd->codec;
315 struct snd_soc_dapm_context *dapm = &codec->dapm;
318 /* set up NC codec pins */
319 snd_soc_dapm_nc_pin(dapm, "OUT3");
320 snd_soc_dapm_nc_pin(dapm, "OUT4");
321 snd_soc_dapm_nc_pin(dapm, "LINE1");
322 snd_soc_dapm_nc_pin(dapm, "LINE2");
324 /* Add neo1973 specific widgets */
325 ret = snd_soc_dapm_new_controls(dapm, neo1973_wm8753_dapm_widgets,
326 ARRAY_SIZE(neo1973_wm8753_dapm_widgets));
330 /* add neo1973 specific controls */
331 ret = snd_soc_add_card_controls(rtd->card, neo1973_wm8753_controls,
332 ARRAY_SIZE(neo1973_wm8753_controls));
336 /* set up neo1973 specific audio routes */
337 ret = snd_soc_dapm_add_routes(dapm, neo1973_wm8753_routes,
338 ARRAY_SIZE(neo1973_wm8753_routes));
342 /* set endpoints to default off mode */
343 snd_soc_dapm_disable_pin(dapm, "GSM Line Out");
344 snd_soc_dapm_disable_pin(dapm, "GSM Line In");
345 snd_soc_dapm_disable_pin(dapm, "Headset Mic");
346 snd_soc_dapm_disable_pin(dapm, "Handset Mic");
348 /* allow audio paths from the GSM modem to run during suspend */
349 snd_soc_dapm_ignore_suspend(dapm, "GSM Line Out");
350 snd_soc_dapm_ignore_suspend(dapm, "GSM Line In");
351 snd_soc_dapm_ignore_suspend(dapm, "Headset Mic");
352 snd_soc_dapm_ignore_suspend(dapm, "Handset Mic");
354 if (machine_is_neo1973_gta02()) {
355 ret = neo1973_gta02_wm8753_init(codec);
363 static struct snd_soc_dai_link neo1973_dai[] = {
364 { /* Hifi Playback - for similatious use with voice below */
366 .stream_name = "WM8753 HiFi",
367 .platform_name = "samsung-audio",
368 .cpu_dai_name = "s3c24xx-iis",
369 .codec_dai_name = "wm8753-hifi",
370 .codec_name = "wm8753.0-001a",
371 .init = neo1973_wm8753_init,
372 .ops = &neo1973_hifi_ops,
376 .stream_name = "Voice",
377 .cpu_dai_name = "dfbmcs320-pcm",
378 .codec_dai_name = "wm8753-voice",
379 .codec_name = "wm8753.0-001a",
380 .ops = &neo1973_voice_ops,
384 static struct snd_soc_aux_dev neo1973_aux_devs[] = {
387 .codec_name = "dfbmcs320.0",
391 static struct snd_soc_codec_conf neo1973_codec_conf[] = {
393 .dev_name = "lm4857.0-007c",
394 .name_prefix = "Amp",
398 static const struct gpio neo1973_gta02_gpios[] = {
399 { GTA02_GPIO_HP_IN, GPIOF_OUT_INIT_HIGH, "GTA02_HP_IN" },
400 { GTA02_GPIO_AMP_SHUT, GPIOF_OUT_INIT_HIGH, "GTA02_AMP_SHUT" },
403 static struct snd_soc_card neo1973 = {
405 .owner = THIS_MODULE,
406 .dai_link = neo1973_dai,
407 .num_links = ARRAY_SIZE(neo1973_dai),
408 .aux_dev = neo1973_aux_devs,
409 .num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
410 .codec_conf = neo1973_codec_conf,
411 .num_configs = ARRAY_SIZE(neo1973_codec_conf),
414 static struct platform_device *neo1973_snd_device;
416 static int __init neo1973_init(void)
420 if (!machine_is_neo1973_gta02())
423 if (machine_is_neo1973_gta02()) {
424 neo1973.name = "neo1973gta02";
425 neo1973.num_aux_devs = 1;
427 ret = gpio_request_array(neo1973_gta02_gpios,
428 ARRAY_SIZE(neo1973_gta02_gpios));
433 neo1973_snd_device = platform_device_alloc("soc-audio", -1);
434 if (!neo1973_snd_device) {
439 platform_set_drvdata(neo1973_snd_device, &neo1973);
440 ret = platform_device_add(neo1973_snd_device);
448 platform_device_put(neo1973_snd_device);
450 if (machine_is_neo1973_gta02()) {
451 gpio_free_array(neo1973_gta02_gpios,
452 ARRAY_SIZE(neo1973_gta02_gpios));
456 module_init(neo1973_init);
458 static void __exit neo1973_exit(void)
460 platform_device_unregister(neo1973_snd_device);
462 if (machine_is_neo1973_gta02()) {
463 gpio_free_array(neo1973_gta02_gpios,
464 ARRAY_SIZE(neo1973_gta02_gpios));
467 module_exit(neo1973_exit);
469 /* Module information */
470 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
471 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
472 MODULE_LICENSE("GPL");