2 * neo1973_gta02_wm8753.c -- SoC audio for Openmoko freerunner
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/regs-gpioj.h>
34 #include <mach/gta02.h>
35 #include "../codecs/wm8753.h"
36 #include "s3c24xx-pcm.h"
37 #include "s3c24xx-i2s.h"
39 static struct snd_soc_card neo1973_gta02;
41 static int neo1973_gta02_hifi_hw_params(struct snd_pcm_substream *substream,
42 struct snd_pcm_hw_params *params)
44 struct snd_soc_pcm_runtime *rtd = substream->private_data;
45 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
46 struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
47 unsigned int pll_out = 0, bclk = 0;
49 unsigned long iis_clkrate;
51 iis_clkrate = s3c24xx_i2s_get_clockrate();
53 switch (params_rate(params)) {
59 bclk = WM8753_BCLK_DIV_4;
63 bclk = WM8753_BCLK_DIV_2;
67 bclk = WM8753_BCLK_DIV_16;
71 bclk = WM8753_BCLK_DIV_8;
75 bclk = WM8753_BCLK_DIV_4;
79 bclk = WM8753_BCLK_DIV_2;
84 /* set codec DAI configuration */
85 ret = snd_soc_dai_set_fmt(codec_dai,
86 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
87 SND_SOC_DAIFMT_CBM_CFM);
91 /* set cpu DAI configuration */
92 ret = snd_soc_dai_set_fmt(cpu_dai,
93 SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
94 SND_SOC_DAIFMT_CBM_CFM);
98 /* set the codec system clock for DAC and ADC */
99 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
104 /* set MCLK division for sample rate */
105 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
106 S3C2410_IISMOD_32FS);
110 /* set codec BCLK division for sample rate */
111 ret = snd_soc_dai_set_clkdiv(codec_dai,
112 WM8753_BCLKDIV, bclk);
116 /* set prescaler division for sample rate */
117 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
118 S3C24XX_PRESCALE(4, 4));
122 /* codec PLL input is PCLK/4 */
123 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1,
124 iis_clkrate / 4, pll_out);
131 static int neo1973_gta02_hifi_hw_free(struct snd_pcm_substream *substream)
133 struct snd_soc_pcm_runtime *rtd = substream->private_data;
134 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
136 /* disable the PLL */
137 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0);
141 * Neo1973 WM8753 HiFi DAI opserations.
143 static struct snd_soc_ops neo1973_gta02_hifi_ops = {
144 .hw_params = neo1973_gta02_hifi_hw_params,
145 .hw_free = neo1973_gta02_hifi_hw_free,
148 static int neo1973_gta02_voice_hw_params(
149 struct snd_pcm_substream *substream,
150 struct snd_pcm_hw_params *params)
152 struct snd_soc_pcm_runtime *rtd = substream->private_data;
153 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
154 unsigned int pcmdiv = 0;
156 unsigned long iis_clkrate;
158 iis_clkrate = s3c24xx_i2s_get_clockrate();
160 if (params_rate(params) != 8000)
162 if (params_channels(params) != 1)
165 pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
167 /* todo: gg check mode (DSP_B) against CSR datasheet */
168 /* set codec DAI configuration */
169 ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_B |
170 SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
174 /* set the codec system clock for DAC and ADC */
175 ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK,
176 12288000, SND_SOC_CLOCK_IN);
180 /* set codec PCM division for sample rate */
181 ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV,
186 /* configue and enable PLL for 12.288MHz output */
187 ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2,
188 iis_clkrate / 4, 12288000);
195 static int neo1973_gta02_voice_hw_free(struct snd_pcm_substream *substream)
197 struct snd_soc_pcm_runtime *rtd = substream->private_data;
198 struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
200 /* disable the PLL */
201 return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0);
204 static struct snd_soc_ops neo1973_gta02_voice_ops = {
205 .hw_params = neo1973_gta02_voice_hw_params,
206 .hw_free = neo1973_gta02_voice_hw_free,
212 static u8 lm4853_state;
214 /* This has no effect, it exists only to maintain compatibility with
215 * existing ALSA state files.
217 static int lm4853_set_state(struct snd_kcontrol *kcontrol,
218 struct snd_ctl_elem_value *ucontrol)
220 int val = ucontrol->value.integer.value[0];
223 lm4853_state |= LM4853_AMP;
225 lm4853_state &= ~LM4853_AMP;
230 static int lm4853_get_state(struct snd_kcontrol *kcontrol,
231 struct snd_ctl_elem_value *ucontrol)
233 ucontrol->value.integer.value[0] = lm4853_state & LM4853_AMP;
238 static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
239 struct snd_ctl_elem_value *ucontrol)
241 int val = ucontrol->value.integer.value[0];
244 lm4853_state |= LM4853_SPK;
245 gpio_set_value(GTA02_GPIO_HP_IN, 0);
247 lm4853_state &= ~LM4853_SPK;
248 gpio_set_value(GTA02_GPIO_HP_IN, 1);
254 static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
255 struct snd_ctl_elem_value *ucontrol)
257 ucontrol->value.integer.value[0] = (lm4853_state & LM4853_SPK) >> 1;
262 static int lm4853_event(struct snd_soc_dapm_widget *w,
263 struct snd_kcontrol *k,
266 if (SND_SOC_DAPM_EVENT_ON(event))
267 gpio_set_value(GTA02_GPIO_AMP_SHUT, 0);
269 if (SND_SOC_DAPM_EVENT_OFF(event))
270 gpio_set_value(GTA02_GPIO_AMP_SHUT, 1);
275 static const struct snd_soc_dapm_widget wm8753_dapm_widgets[] = {
276 SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
277 SND_SOC_DAPM_LINE("GSM Line Out", NULL),
278 SND_SOC_DAPM_LINE("GSM Line In", NULL),
279 SND_SOC_DAPM_MIC("Headset Mic", NULL),
280 SND_SOC_DAPM_MIC("Handset Mic", NULL),
281 SND_SOC_DAPM_SPK("Handset Spk", NULL),
285 /* example machine audio_mapnections */
286 static const struct snd_soc_dapm_route audio_map[] = {
288 /* Connections to the lm4853 amp */
289 {"Stereo Out", NULL, "LOUT1"},
290 {"Stereo Out", NULL, "ROUT1"},
292 /* Connections to the GSM Module */
293 {"GSM Line Out", NULL, "MONO1"},
294 {"GSM Line Out", NULL, "MONO2"},
295 {"RXP", NULL, "GSM Line In"},
296 {"RXN", NULL, "GSM Line In"},
298 /* Connections to Headset */
299 {"MIC1", NULL, "Mic Bias"},
300 {"Mic Bias", NULL, "Headset Mic"},
303 {"MIC2", NULL, "Mic Bias"},
304 {"MIC2N", NULL, "Mic Bias"},
305 {"Mic Bias", NULL, "Handset Mic"},
308 {"Handset Spk", NULL, "LOUT2"},
309 {"Handset Spk", NULL, "ROUT2"},
311 /* Connect the ALC pins */
312 {"ACIN", NULL, "ACOP"},
315 static const struct snd_kcontrol_new wm8753_neo1973_gta02_controls[] = {
316 SOC_DAPM_PIN_SWITCH("Stereo Out"),
317 SOC_DAPM_PIN_SWITCH("GSM Line Out"),
318 SOC_DAPM_PIN_SWITCH("GSM Line In"),
319 SOC_DAPM_PIN_SWITCH("Headset Mic"),
320 SOC_DAPM_PIN_SWITCH("Handset Mic"),
321 SOC_DAPM_PIN_SWITCH("Handset Spk"),
323 /* This has no effect, it exists only to maintain compatibility with
324 * existing ALSA state files.
326 SOC_SINGLE_EXT("Amp State Switch", 6, 0, 1, 0,
329 SOC_SINGLE_EXT("Amp Spk Switch", 7, 0, 1, 0,
335 * This is an example machine initialisation for a wm8753 connected to a
338 static int neo1973_gta02_wm8753_init(struct snd_soc_codec *codec)
342 /* set up NC codec pins */
343 snd_soc_dapm_nc_pin(codec, "OUT3");
344 snd_soc_dapm_nc_pin(codec, "OUT4");
345 snd_soc_dapm_nc_pin(codec, "LINE1");
346 snd_soc_dapm_nc_pin(codec, "LINE2");
348 /* Add neo1973 gta02 specific widgets */
349 snd_soc_dapm_new_controls(codec, wm8753_dapm_widgets,
350 ARRAY_SIZE(wm8753_dapm_widgets));
352 /* add neo1973 gta02 specific controls */
353 err = snd_soc_add_controls(codec, wm8753_neo1973_gta02_controls,
354 ARRAY_SIZE(wm8753_neo1973_gta02_controls));
359 /* set up neo1973 gta02 specific audio path audio_map */
360 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
362 /* set endpoints to default off mode */
363 snd_soc_dapm_disable_pin(codec, "Stereo Out");
364 snd_soc_dapm_disable_pin(codec, "GSM Line Out");
365 snd_soc_dapm_disable_pin(codec, "GSM Line In");
366 snd_soc_dapm_disable_pin(codec, "Headset Mic");
367 snd_soc_dapm_disable_pin(codec, "Handset Mic");
368 snd_soc_dapm_disable_pin(codec, "Handset Spk");
370 snd_soc_dapm_sync(codec);
378 static struct snd_soc_dai bt_dai = {
384 .rates = SNDRV_PCM_RATE_8000,
385 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
389 .rates = SNDRV_PCM_RATE_8000,
390 .formats = SNDRV_PCM_FMTBIT_S16_LE,},
393 static struct snd_soc_dai_link neo1973_gta02_dai[] = {
394 { /* Hifi Playback - for similatious use with voice below */
396 .stream_name = "WM8753 HiFi",
397 .cpu_dai = &s3c24xx_i2s_dai,
398 .codec_dai = &wm8753_dai[WM8753_DAI_HIFI],
399 .init = neo1973_gta02_wm8753_init,
400 .ops = &neo1973_gta02_hifi_ops,
404 .stream_name = "Voice",
406 .codec_dai = &wm8753_dai[WM8753_DAI_VOICE],
407 .ops = &neo1973_gta02_voice_ops,
411 static struct snd_soc_card neo1973_gta02 = {
412 .name = "neo1973-gta02",
413 .platform = &s3c24xx_soc_platform,
414 .dai_link = neo1973_gta02_dai,
415 .num_links = ARRAY_SIZE(neo1973_gta02_dai),
418 static struct snd_soc_device neo1973_gta02_snd_devdata = {
419 .card = &neo1973_gta02,
420 .codec_dev = &soc_codec_dev_wm8753,
423 static struct platform_device *neo1973_gta02_snd_device;
425 static int __init neo1973_gta02_init(void)
429 if (!machine_is_neo1973_gta02()) {
431 "Only GTA02 is supported by this ASoC driver\n");
435 /* register bluetooth DAI here */
436 ret = snd_soc_register_dai(&bt_dai);
440 neo1973_gta02_snd_device = platform_device_alloc("soc-audio", -1);
441 if (!neo1973_gta02_snd_device)
444 platform_set_drvdata(neo1973_gta02_snd_device,
445 &neo1973_gta02_snd_devdata);
446 neo1973_gta02_snd_devdata.dev = &neo1973_gta02_snd_device->dev;
447 ret = platform_device_add(neo1973_gta02_snd_device);
450 platform_device_put(neo1973_gta02_snd_device);
454 /* Initialise GPIOs used by amp */
455 ret = gpio_request(GTA02_GPIO_HP_IN, "GTA02_HP_IN");
457 pr_err("%s: Failed to register GPIO %d\n", __func__, GTA02_GPIO_HP_IN);
458 goto err_unregister_device;
461 ret = gpio_direction_output(GTA02_GPIO_HP_IN, 1);
463 pr_err("%s: Failed to configure GPIO %d\n", __func__, GTA02_GPIO_HP_IN);
464 goto err_unregister_device;
467 ret = gpio_request(GTA02_GPIO_AMP_SHUT, "GTA02_AMP_SHUT");
469 pr_err("%s: Failed to register GPIO %d\n", __func__, GTA02_GPIO_AMP_SHUT);
470 goto err_free_gpio_hp_in;
473 ret = gpio_direction_output(GTA02_GPIO_AMP_SHUT, 1);
475 pr_err("%s: Failed to configure GPIO %d\n", __func__, GTA02_GPIO_AMP_SHUT);
476 goto err_free_gpio_hp_in;
482 gpio_free(GTA02_GPIO_HP_IN);
483 err_unregister_device:
484 platform_device_unregister(neo1973_gta02_snd_device);
487 module_init(neo1973_gta02_init);
489 static void __exit neo1973_gta02_exit(void)
491 snd_soc_unregister_dai(&bt_dai);
492 platform_device_unregister(neo1973_gta02_snd_device);
493 gpio_free(GTA02_GPIO_HP_IN);
494 gpio_free(GTA02_GPIO_AMP_SHUT);
496 module_exit(neo1973_gta02_exit);
498 /* Module information */
499 MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org");
500 MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 GTA02");
501 MODULE_LICENSE("GPL");