1 /* sound/soc/samsung/smartq_wm8987.c
3 * Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
5 * Based on smdk6410_wm8987.c
6 * Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
7 * Graeme Gregory - graeme.gregory@wolfsonmicro.com
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
16 #include <linux/gpio/consumer.h>
17 #include <linux/module.h>
19 #include <sound/soc.h>
20 #include <sound/jack.h>
23 #include "../codecs/wm8750.h"
26 * WM8987 is register compatible with WM8750, so using that as base driver.
29 static struct snd_soc_card snd_soc_smartq;
31 static int smartq_hifi_hw_params(struct snd_pcm_substream *substream,
32 struct snd_pcm_hw_params *params)
34 struct snd_soc_pcm_runtime *rtd = substream->private_data;
35 struct snd_soc_dai *codec_dai = rtd->codec_dai;
36 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
40 switch (params_rate(params)) {
56 /* Use PCLK for I2S signal generation */
57 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
62 /* Gate the RCLK output on PAD */
63 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
68 /* set the codec system clock for DAC and ADC */
69 ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
78 * SmartQ WM8987 HiFi DAI operations.
80 static struct snd_soc_ops smartq_hifi_ops = {
81 .hw_params = smartq_hifi_hw_params,
84 static struct snd_soc_jack smartq_jack;
86 static struct snd_soc_jack_pin smartq_jack_pins[] = {
87 /* Disable speaker when headphone is plugged in */
89 .pin = "Internal Speaker",
90 .mask = SND_JACK_HEADPHONE,
94 static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
97 .name = "headphone detect",
98 .report = SND_JACK_HEADPHONE,
103 static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
104 SOC_DAPM_PIN_SWITCH("Internal Speaker"),
105 SOC_DAPM_PIN_SWITCH("Headphone Jack"),
106 SOC_DAPM_PIN_SWITCH("Internal Mic"),
109 static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
110 struct snd_kcontrol *k,
113 struct gpio_desc *gpio = snd_soc_card_get_drvdata(&snd_soc_smartq);
115 gpiod_set_value(gpio, SND_SOC_DAPM_EVENT_OFF(event));
120 static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
121 SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
122 SND_SOC_DAPM_HP("Headphone Jack", NULL),
123 SND_SOC_DAPM_MIC("Internal Mic", NULL),
126 static const struct snd_soc_dapm_route audio_map[] = {
127 {"Headphone Jack", NULL, "LOUT2"},
128 {"Headphone Jack", NULL, "ROUT2"},
130 {"Internal Speaker", NULL, "LOUT2"},
131 {"Internal Speaker", NULL, "ROUT2"},
133 {"Mic Bias", NULL, "Internal Mic"},
134 {"LINPUT2", NULL, "Mic Bias"},
137 static int smartq_wm8987_init(struct snd_soc_pcm_runtime *rtd)
139 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
142 /* set endpoints to not connected */
143 snd_soc_dapm_nc_pin(dapm, "LINPUT1");
144 snd_soc_dapm_nc_pin(dapm, "RINPUT1");
145 snd_soc_dapm_nc_pin(dapm, "OUT3");
146 snd_soc_dapm_nc_pin(dapm, "ROUT1");
148 /* Headphone jack detection */
149 err = snd_soc_card_jack_new(rtd->card, "Headphone Jack",
150 SND_JACK_HEADPHONE, &smartq_jack,
152 ARRAY_SIZE(smartq_jack_pins));
156 err = snd_soc_jack_add_gpios(&smartq_jack,
157 ARRAY_SIZE(smartq_jack_gpios),
163 static int smartq_wm8987_card_remove(struct snd_soc_card *card)
165 snd_soc_jack_free_gpios(&smartq_jack, ARRAY_SIZE(smartq_jack_gpios),
171 static struct snd_soc_dai_link smartq_dai[] = {
174 .stream_name = "SmartQ Hi-Fi",
175 .cpu_dai_name = "samsung-i2s.0",
176 .codec_dai_name = "wm8750-hifi",
177 .platform_name = "samsung-i2s.0",
178 .codec_name = "wm8750.0-0x1a",
179 .init = smartq_wm8987_init,
180 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
181 SND_SOC_DAIFMT_CBS_CFS,
182 .ops = &smartq_hifi_ops,
186 static struct snd_soc_card snd_soc_smartq = {
188 .owner = THIS_MODULE,
189 .remove = smartq_wm8987_card_remove,
190 .dai_link = smartq_dai,
191 .num_links = ARRAY_SIZE(smartq_dai),
193 .dapm_widgets = wm8987_dapm_widgets,
194 .num_dapm_widgets = ARRAY_SIZE(wm8987_dapm_widgets),
195 .dapm_routes = audio_map,
196 .num_dapm_routes = ARRAY_SIZE(audio_map),
197 .controls = wm8987_smartq_controls,
198 .num_controls = ARRAY_SIZE(wm8987_smartq_controls),
201 static int smartq_probe(struct platform_device *pdev)
203 struct gpio_desc *gpio;
206 platform_set_drvdata(pdev, &snd_soc_smartq);
208 /* Initialise GPIOs used by amplifiers */
209 gpio = devm_gpiod_get(&pdev->dev, "amplifiers shutdown",
212 dev_err(&pdev->dev, "Failed to register GPK12\n");
216 snd_soc_card_set_drvdata(&snd_soc_smartq, gpio);
218 ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_smartq);
220 dev_err(&pdev->dev, "Failed to register card\n");
226 static struct platform_driver smartq_driver = {
228 .name = "smartq-audio",
230 .probe = smartq_probe,
233 module_platform_driver(smartq_driver);
235 /* Module information */
236 MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
237 MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
238 MODULE_LICENSE("GPL");