diff options
Diffstat (limited to 'sound/soc/samsung/h1940_uda1380.c')
| -rw-r--r-- | sound/soc/samsung/h1940_uda1380.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/sound/soc/samsung/h1940_uda1380.c b/sound/soc/samsung/h1940_uda1380.c new file mode 100644 index 000000000..fa45a54ab --- /dev/null +++ b/sound/soc/samsung/h1940_uda1380.c @@ -0,0 +1,224 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// h1940_uda1380.c - ALSA SoC Audio Layer +// +// Copyright (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org> +// Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com> +// +// Based on version from Arnaud Patard <arnaud.patard@rtp-net.org> + +#include <linux/types.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> + +#include <sound/soc.h> +#include <sound/jack.h> + +#include "regs-iis.h" +#include "s3c24xx-i2s.h" + +static const unsigned int rates[] = { + 11025, + 22050, + 44100, +}; + +static const struct snd_pcm_hw_constraint_list hw_rates = { + .count = ARRAY_SIZE(rates), + .list = rates, +}; + +static struct gpio_desc *gpiod_speaker_power; + +static struct snd_soc_jack hp_jack; + +static struct snd_soc_jack_pin hp_jack_pins[] = { + { + .pin = "Headphone Jack", + .mask = SND_JACK_HEADPHONE, + }, + { + .pin = "Speaker", + .mask = SND_JACK_HEADPHONE, + .invert = 1, + }, +}; + +static struct snd_soc_jack_gpio hp_jack_gpios[] = { + { + .name = "hp-gpio", + .report = SND_JACK_HEADPHONE, + .invert = 1, + .debounce_time = 200, + }, +}; + +static int h1940_startup(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + return snd_pcm_hw_constraint_list(runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &hw_rates); +} + +static int h1940_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 *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + int div; + int ret; + unsigned int rate = params_rate(params); + + switch (rate) { + case 11025: + case 22050: + case 44100: + div = s3c24xx_i2s_get_clockrate() / (384 * rate); + if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (192 * rate)) + div++; + break; + default: + dev_err(rtd->dev, "%s: rate %d is not supported\n", + __func__, rate); + return -EINVAL; + } + + /* select clock source */ + ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate, + SND_SOC_CLOCK_OUT); + if (ret < 0) + return ret; + + /* set MCLK division for sample rate */ + ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK, + S3C2410_IISMOD_384FS); + if (ret < 0) + return ret; + + /* set BCLK division for sample rate */ + ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK, + S3C2410_IISMOD_32FS); + if (ret < 0) + return ret; + + /* set prescaler division for sample rate */ + ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER, + S3C24XX_PRESCALE(div, div)); + if (ret < 0) + return ret; + + return 0; +} + +static const struct snd_soc_ops h1940_ops = { + .startup = h1940_startup, + .hw_params = h1940_hw_params, +}; + +static int h1940_spk_power(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + if (SND_SOC_DAPM_EVENT_ON(event)) + gpiod_set_value(gpiod_speaker_power, 1); + else + gpiod_set_value(gpiod_speaker_power, 0); + + return 0; +} + +/* h1940 machine dapm widgets */ +static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_MIC("Mic Jack", NULL), + SND_SOC_DAPM_SPK("Speaker", h1940_spk_power), +}; + +/* h1940 machine audio_map */ +static const struct snd_soc_dapm_route audio_map[] = { + /* headphone connected to VOUTLHP, VOUTRHP */ + {"Headphone Jack", NULL, "VOUTLHP"}, + {"Headphone Jack", NULL, "VOUTRHP"}, + + /* ext speaker connected to VOUTL, VOUTR */ + {"Speaker", NULL, "VOUTL"}, + {"Speaker", NULL, "VOUTR"}, + + /* mic is connected to VINM */ + {"VINM", NULL, "Mic Jack"}, +}; + +static int h1940_uda1380_init(struct snd_soc_pcm_runtime *rtd) +{ + snd_soc_card_jack_new_pins(rtd->card, "Headphone Jack", + SND_JACK_HEADPHONE, + &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins)); + + snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), + hp_jack_gpios); + + return 0; +} + +/* s3c24xx digital audio interface glue - connects codec <--> CPU */ +SND_SOC_DAILINK_DEFS(uda1380, + DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")), + DAILINK_COMP_ARRAY(COMP_CODEC("uda1380-codec.0-001a", "uda1380-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis"))); + +static struct snd_soc_dai_link h1940_uda1380_dai[] = { + { + .name = "uda1380", + .stream_name = "UDA1380 Duplex", + .init = h1940_uda1380_init, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + .ops = &h1940_ops, + SND_SOC_DAILINK_REG(uda1380), + }, +}; + +static struct snd_soc_card h1940_asoc = { + .name = "h1940", + .owner = THIS_MODULE, + .dai_link = h1940_uda1380_dai, + .num_links = ARRAY_SIZE(h1940_uda1380_dai), + + .dapm_widgets = uda1380_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets), + .dapm_routes = audio_map, + .num_dapm_routes = ARRAY_SIZE(audio_map), +}; + +static int h1940_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + + h1940_asoc.dev = dev; + hp_jack_gpios[0].gpiod_dev = dev; + gpiod_speaker_power = devm_gpiod_get(&pdev->dev, "speaker-power", + GPIOD_OUT_LOW); + + if (IS_ERR(gpiod_speaker_power)) { + dev_err(dev, "Could not get gpio\n"); + return PTR_ERR(gpiod_speaker_power); + } + + return devm_snd_soc_register_card(dev, &h1940_asoc); +} + +static struct platform_driver h1940_audio_driver = { + .driver = { + .name = "h1940-audio", + .pm = &snd_soc_pm_ops, + }, + .probe = h1940_probe, +}; +module_platform_driver(h1940_audio_driver); + +/* Module information */ +MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick"); +MODULE_DESCRIPTION("ALSA SoC H1940"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:h1940-audio"); |