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9666e27f90
Avoid machine specific headers by using a gpio lookup table combined with a platform_driver for this board. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20200806182059.2431-24-krzk@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
224 lines
5.3 KiB
C
224 lines
5.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// h1940_uda1380.c - ALSA SoC Audio Layer
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//
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// Copyright (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
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// Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
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//
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// Based on version from Arnaud Patard <arnaud.patard@rtp-net.org>
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#include <linux/types.h>
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#include <linux/gpio.h>
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#include <linux/module.h>
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#include <sound/soc.h>
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#include <sound/jack.h>
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#include "regs-iis.h"
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#include "s3c24xx-i2s.h"
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static const unsigned int rates[] = {
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11025,
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22050,
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44100,
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};
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static const struct snd_pcm_hw_constraint_list hw_rates = {
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.count = ARRAY_SIZE(rates),
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.list = rates,
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};
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static struct gpio_desc *gpiod_speaker_power;
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static struct snd_soc_jack hp_jack;
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static struct snd_soc_jack_pin hp_jack_pins[] = {
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{
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.pin = "Headphone Jack",
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.mask = SND_JACK_HEADPHONE,
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},
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{
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.pin = "Speaker",
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.mask = SND_JACK_HEADPHONE,
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.invert = 1,
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},
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};
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static struct snd_soc_jack_gpio hp_jack_gpios[] = {
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{
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.name = "hp-gpio",
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.report = SND_JACK_HEADPHONE,
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.invert = 1,
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.debounce_time = 200,
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},
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};
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static int h1940_startup(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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return snd_pcm_hw_constraint_list(runtime, 0,
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SNDRV_PCM_HW_PARAM_RATE,
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&hw_rates);
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}
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static int h1940_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 = asoc_substream_to_rtd(substream);
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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int div;
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int ret;
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unsigned int rate = params_rate(params);
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switch (rate) {
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case 11025:
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case 22050:
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case 44100:
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div = s3c24xx_i2s_get_clockrate() / (384 * rate);
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if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (192 * rate))
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div++;
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break;
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default:
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dev_err(rtd->dev, "%s: rate %d is not supported\n",
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__func__, rate);
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return -EINVAL;
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}
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/* select clock source */
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ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate,
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SND_SOC_CLOCK_OUT);
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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, S3C24XX_DIV_MCLK,
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S3C2410_IISMOD_384FS);
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if (ret < 0)
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return ret;
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/* set BCLK division for sample rate */
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ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
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S3C2410_IISMOD_32FS);
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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, S3C24XX_DIV_PRESCALER,
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S3C24XX_PRESCALE(div, div));
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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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static struct snd_soc_ops h1940_ops = {
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.startup = h1940_startup,
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.hw_params = h1940_hw_params,
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};
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static int h1940_spk_power(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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if (SND_SOC_DAPM_EVENT_ON(event))
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gpiod_set_value(gpiod_speaker_power, 1);
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else
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gpiod_set_value(gpiod_speaker_power, 0);
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return 0;
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}
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/* h1940 machine dapm widgets */
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static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
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SND_SOC_DAPM_HP("Headphone Jack", NULL),
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SND_SOC_DAPM_MIC("Mic Jack", NULL),
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SND_SOC_DAPM_SPK("Speaker", h1940_spk_power),
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};
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/* h1940 machine audio_map */
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static const struct snd_soc_dapm_route audio_map[] = {
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/* headphone connected to VOUTLHP, VOUTRHP */
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{"Headphone Jack", NULL, "VOUTLHP"},
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{"Headphone Jack", NULL, "VOUTRHP"},
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/* ext speaker connected to VOUTL, VOUTR */
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{"Speaker", NULL, "VOUTL"},
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{"Speaker", NULL, "VOUTR"},
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/* mic is connected to VINM */
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{"VINM", NULL, "Mic Jack"},
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};
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static int h1940_uda1380_init(struct snd_soc_pcm_runtime *rtd)
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{
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snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
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&hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
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snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
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hp_jack_gpios);
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return 0;
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}
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/* s3c24xx digital audio interface glue - connects codec <--> CPU */
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SND_SOC_DAILINK_DEFS(uda1380,
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DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
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DAILINK_COMP_ARRAY(COMP_CODEC("uda1380-codec.0-001a", "uda1380-hifi")),
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DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));
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static struct snd_soc_dai_link h1940_uda1380_dai[] = {
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{
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.name = "uda1380",
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.stream_name = "UDA1380 Duplex",
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.init = h1940_uda1380_init,
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS,
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.ops = &h1940_ops,
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SND_SOC_DAILINK_REG(uda1380),
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},
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};
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static struct snd_soc_card h1940_asoc = {
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.name = "h1940",
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.owner = THIS_MODULE,
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.dai_link = h1940_uda1380_dai,
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.num_links = ARRAY_SIZE(h1940_uda1380_dai),
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.dapm_widgets = uda1380_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
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.dapm_routes = audio_map,
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.num_dapm_routes = ARRAY_SIZE(audio_map),
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};
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static int h1940_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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h1940_asoc.dev = dev;
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hp_jack_gpios[0].gpiod_dev = dev;
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gpiod_speaker_power = devm_gpiod_get(&pdev->dev, "speaker-power",
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GPIOD_OUT_LOW);
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if (IS_ERR(gpiod_speaker_power)) {
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dev_err(dev, "Could not get gpio\n");
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return PTR_ERR(gpiod_speaker_power);
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}
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return devm_snd_soc_register_card(dev, &h1940_asoc);
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}
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static struct platform_driver h1940_audio_driver = {
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.driver = {
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.name = "h1940-audio",
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.pm = &snd_soc_pm_ops,
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},
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.probe = h1940_probe,
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};
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module_platform_driver(h1940_audio_driver);
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/* Module information */
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MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick");
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MODULE_DESCRIPTION("ALSA SoC H1940");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:h1940-audio");
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