| // 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 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(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"); |