diff options
Diffstat (limited to 'sound/soc/samsung/smartq_wm8987.c')
| -rw-r--r-- | sound/soc/samsung/smartq_wm8987.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/sound/soc/samsung/smartq_wm8987.c b/sound/soc/samsung/smartq_wm8987.c new file mode 100644 index 000000000..29bf91724 --- /dev/null +++ b/sound/soc/samsung/smartq_wm8987.c @@ -0,0 +1,224 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com> +// +// Based on smdk6410_wm8987.c +// Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com +// Graeme Gregory - graeme.gregory@wolfsonmicro.com + +#include <linux/gpio/consumer.h> +#include <linux/module.h> + +#include <sound/soc.h> +#include <sound/jack.h> + +#include "i2s.h" +#include "../codecs/wm8750.h" + +/* + * WM8987 is register compatible with WM8750, so using that as base driver. + */ + +static struct snd_soc_card snd_soc_smartq; + +static int smartq_hifi_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + unsigned int clk = 0; + int ret; + + switch (params_rate(params)) { + case 8000: + case 16000: + case 32000: + case 48000: + case 96000: + clk = 12288000; + break; + case 11025: + case 22050: + case 44100: + case 88200: + clk = 11289600; + break; + } + + /* Use PCLK for I2S signal generation */ + ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0, + 0, SND_SOC_CLOCK_IN); + if (ret < 0) + return ret; + + /* Gate the RCLK output on PAD */ + ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK, + 0, SND_SOC_CLOCK_IN); + if (ret < 0) + return ret; + + /* set the codec system clock for DAC and ADC */ + ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk, + SND_SOC_CLOCK_IN); + if (ret < 0) + return ret; + + return 0; +} + +/* + * SmartQ WM8987 HiFi DAI operations. + */ +static const struct snd_soc_ops smartq_hifi_ops = { + .hw_params = smartq_hifi_hw_params, +}; + +static struct snd_soc_jack smartq_jack; + +static struct snd_soc_jack_pin smartq_jack_pins[] = { + /* Disable speaker when headphone is plugged in */ + { + .pin = "Internal Speaker", + .mask = SND_JACK_HEADPHONE, + }, +}; + +static struct snd_soc_jack_gpio smartq_jack_gpios[] = { + { + .gpio = -1, + .name = "headphone detect", + .report = SND_JACK_HEADPHONE, + .debounce_time = 200, + }, +}; + +static const struct snd_kcontrol_new wm8987_smartq_controls[] = { + SOC_DAPM_PIN_SWITCH("Internal Speaker"), + SOC_DAPM_PIN_SWITCH("Headphone Jack"), + SOC_DAPM_PIN_SWITCH("Internal Mic"), +}; + +static int smartq_speaker_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, + int event) +{ + struct gpio_desc *gpio = snd_soc_card_get_drvdata(&snd_soc_smartq); + + gpiod_set_value(gpio, SND_SOC_DAPM_EVENT_OFF(event)); + + return 0; +} + +static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = { + SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event), + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_MIC("Internal Mic", NULL), +}; + +static const struct snd_soc_dapm_route audio_map[] = { + {"Headphone Jack", NULL, "LOUT2"}, + {"Headphone Jack", NULL, "ROUT2"}, + + {"Internal Speaker", NULL, "LOUT2"}, + {"Internal Speaker", NULL, "ROUT2"}, + + {"Mic Bias", NULL, "Internal Mic"}, + {"LINPUT2", NULL, "Mic Bias"}, +}; + +static int smartq_wm8987_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_dapm_context *dapm = &rtd->card->dapm; + int err = 0; + + /* set endpoints to not connected */ + snd_soc_dapm_nc_pin(dapm, "LINPUT1"); + snd_soc_dapm_nc_pin(dapm, "RINPUT1"); + snd_soc_dapm_nc_pin(dapm, "OUT3"); + snd_soc_dapm_nc_pin(dapm, "ROUT1"); + + /* Headphone jack detection */ + err = snd_soc_card_jack_new_pins(rtd->card, "Headphone Jack", + SND_JACK_HEADPHONE, &smartq_jack, + smartq_jack_pins, + ARRAY_SIZE(smartq_jack_pins)); + if (err) + return err; + + err = snd_soc_jack_add_gpios(&smartq_jack, + ARRAY_SIZE(smartq_jack_gpios), + smartq_jack_gpios); + + return err; +} + +SND_SOC_DAILINK_DEFS(wm8987, + DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")), + DAILINK_COMP_ARRAY(COMP_CODEC("wm8750.0-0x1a", "wm8750-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0"))); + +static struct snd_soc_dai_link smartq_dai[] = { + { + .name = "wm8987", + .stream_name = "SmartQ Hi-Fi", + .init = smartq_wm8987_init, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + .ops = &smartq_hifi_ops, + SND_SOC_DAILINK_REG(wm8987), + }, +}; + +static struct snd_soc_card snd_soc_smartq = { + .name = "SmartQ", + .owner = THIS_MODULE, + .dai_link = smartq_dai, + .num_links = ARRAY_SIZE(smartq_dai), + + .dapm_widgets = wm8987_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(wm8987_dapm_widgets), + .dapm_routes = audio_map, + .num_dapm_routes = ARRAY_SIZE(audio_map), + .controls = wm8987_smartq_controls, + .num_controls = ARRAY_SIZE(wm8987_smartq_controls), +}; + +static int smartq_probe(struct platform_device *pdev) +{ + struct gpio_desc *gpio; + int ret; + + platform_set_drvdata(pdev, &snd_soc_smartq); + + /* Initialise GPIOs used by amplifiers */ + gpio = devm_gpiod_get(&pdev->dev, "amplifiers shutdown", + GPIOD_OUT_HIGH); + if (IS_ERR(gpio)) { + dev_err(&pdev->dev, "Failed to register GPK12\n"); + ret = PTR_ERR(gpio); + goto out; + } + snd_soc_card_set_drvdata(&snd_soc_smartq, gpio); + + ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_smartq); + if (ret) + dev_err(&pdev->dev, "Failed to register card\n"); + +out: + return ret; +} + +static struct platform_driver smartq_driver = { + .driver = { + .name = "smartq-audio", + }, + .probe = smartq_probe, +}; + +module_platform_driver(smartq_driver); + +/* Module information */ +MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>"); +MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987"); +MODULE_LICENSE("GPL"); |