291 lines
7.0 KiB
C
291 lines
7.0 KiB
C
/* sound/soc/s3c24xx/smartq_wm8987.c
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*
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* Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
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*
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* Based on smdk6410_wm8987.c
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* Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
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* Graeme Gregory - graeme.gregory@wolfsonmicro.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc-dapm.h>
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#include <sound/jack.h>
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#include <asm/mach-types.h>
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#include "s3c-dma.h"
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#include "s3c64xx-i2s.h"
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#include "../codecs/wm8750.h"
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/*
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* WM8987 is register compatible with WM8750, so using that as base driver.
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*/
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static struct snd_soc_card snd_soc_smartq;
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static int smartq_hifi_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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struct s3c_i2sv2_rate_calc div;
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unsigned int clk = 0;
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int ret;
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s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
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s3c_i2sv2_get_clock(cpu_dai));
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switch (params_rate(params)) {
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case 8000:
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case 16000:
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case 32000:
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case 48000:
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case 96000:
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clk = 12288000;
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break;
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case 11025:
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case 22050:
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case 44100:
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case 88200:
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clk = 11289600;
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break;
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}
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/* set codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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/* set cpu DAI configuration */
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ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS);
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if (ret < 0)
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return ret;
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/* set the codec system clock for DAC and ADC */
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ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
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SND_SOC_CLOCK_IN);
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if (ret < 0)
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return ret;
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/* set MCLK division for sample rate */
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, div.fs_div);
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if (ret < 0)
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return ret;
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/* set prescaler division for sample rate */
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_PRESCALER,
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div.clk_div - 1);
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if (ret < 0)
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return ret;
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return 0;
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}
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/*
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* SmartQ WM8987 HiFi DAI operations.
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*/
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static struct snd_soc_ops smartq_hifi_ops = {
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.hw_params = smartq_hifi_hw_params,
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};
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static struct snd_soc_jack smartq_jack;
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static struct snd_soc_jack_pin smartq_jack_pins[] = {
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/* Disable speaker when headphone is plugged in */
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{
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.pin = "Internal Speaker",
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.mask = SND_JACK_HEADPHONE,
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},
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};
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static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
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{
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.gpio = S3C64XX_GPL(12),
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.name = "headphone detect",
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.report = SND_JACK_HEADPHONE,
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.debounce_time = 200,
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},
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};
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static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
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SOC_DAPM_PIN_SWITCH("Internal Speaker"),
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SOC_DAPM_PIN_SWITCH("Headphone Jack"),
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SOC_DAPM_PIN_SWITCH("Internal Mic"),
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};
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static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *k,
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int event)
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{
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gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));
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return 0;
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}
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static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
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SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_MIC("Internal Mic", NULL),
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};
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static const struct snd_soc_dapm_route audio_map[] = {
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{"Headphone Jack", NULL, "LOUT2"},
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{"Headphone Jack", NULL, "ROUT2"},
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{"Internal Speaker", NULL, "LOUT2"},
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{"Internal Speaker", NULL, "ROUT2"},
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{"Mic Bias", NULL, "Internal Mic"},
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{"LINPUT2", NULL, "Mic Bias"},
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};
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static int smartq_wm8987_init(struct snd_soc_codec *codec)
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{
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int err = 0;
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/* Add SmartQ specific widgets */
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snd_soc_dapm_new_controls(codec, wm8987_dapm_widgets,
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ARRAY_SIZE(wm8987_dapm_widgets));
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/* add SmartQ specific controls */
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err = snd_soc_add_controls(codec, wm8987_smartq_controls,
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ARRAY_SIZE(wm8987_smartq_controls));
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if (err < 0)
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return err;
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/* setup SmartQ specific audio path */
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snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
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/* set endpoints to not connected */
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snd_soc_dapm_nc_pin(codec, "LINPUT1");
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snd_soc_dapm_nc_pin(codec, "RINPUT1");
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snd_soc_dapm_nc_pin(codec, "OUT3");
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snd_soc_dapm_nc_pin(codec, "ROUT1");
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/* set endpoints to default off mode */
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snd_soc_dapm_enable_pin(codec, "Internal Speaker");
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snd_soc_dapm_enable_pin(codec, "Internal Mic");
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snd_soc_dapm_disable_pin(codec, "Headphone Jack");
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err = snd_soc_dapm_sync(codec);
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if (err)
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return err;
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/* Headphone jack detection */
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err = snd_soc_jack_new(&snd_soc_smartq, "Headphone Jack",
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SND_JACK_HEADPHONE, &smartq_jack);
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if (err)
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return err;
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err = snd_soc_jack_add_pins(&smartq_jack, ARRAY_SIZE(smartq_jack_pins),
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smartq_jack_pins);
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if (err)
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return err;
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err = snd_soc_jack_add_gpios(&smartq_jack,
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ARRAY_SIZE(smartq_jack_gpios),
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smartq_jack_gpios);
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return err;
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}
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static struct snd_soc_dai_link smartq_dai[] = {
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{
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.name = "wm8987",
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.stream_name = "SmartQ Hi-Fi",
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.cpu_dai_name = "s3c64xx-i2s.0",
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.codec_dai_name = "wm8750-hifi",
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.platform_name = "s3c24xx-pcm-audio",
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.codec_name = "wm8750-codec.0-0x1a",
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.init = smartq_wm8987_init,
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.ops = &smartq_hifi_ops,
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},
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};
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static struct snd_soc_card snd_soc_smartq = {
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.name = "SmartQ",
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.dai_link = smartq_dai,
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.num_links = ARRAY_SIZE(smartq_dai),
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};
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static struct platform_device *smartq_snd_device;
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static int __init smartq_init(void)
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{
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int ret;
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if (!machine_is_smartq7() && !machine_is_smartq5()) {
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pr_info("Only SmartQ is supported by this ASoC driver\n");
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return -ENODEV;
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}
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smartq_snd_device = platform_device_alloc("soc-audio", -1);
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if (!smartq_snd_device)
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return -ENOMEM;
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platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);
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ret = platform_device_add(smartq_snd_device);
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if (ret) {
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platform_device_put(smartq_snd_device);
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return ret;
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}
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/* Initialise GPIOs used by amplifiers */
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ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
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if (ret) {
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dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
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goto err_unregister_device;
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}
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/* Disable amplifiers */
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ret = gpio_direction_output(S3C64XX_GPK(12), 1);
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if (ret) {
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dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
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goto err_free_gpio_amp_shut;
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}
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return 0;
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err_free_gpio_amp_shut:
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gpio_free(S3C64XX_GPK(12));
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err_unregister_device:
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platform_device_unregister(smartq_snd_device);
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return ret;
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}
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static void __exit smartq_exit(void)
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{
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snd_soc_jack_free_gpios(&smartq_jack, ARRAY_SIZE(smartq_jack_gpios),
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smartq_jack_gpios);
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platform_device_unregister(smartq_snd_device);
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}
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module_init(smartq_init);
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module_exit(smartq_exit);
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/* Module information */
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MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
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MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
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MODULE_LICENSE("GPL");
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