1 files changed, 245 insertions, 0 deletions
diff --git a/sound/soc/samsung/rx1950_uda1380.c b/sound/soc/samsung/rx1950_uda1380.c
new file mode 100644
index 000000000..abf28321f
--- /dev/null
+++ b/sound/soc/samsung/rx1950_uda1380.c
@@ -0,0 +1,245 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// rx1950.c - ALSA SoC Audio Layer
+//
+// Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
+//
+// Based on smdk2440.c and magician.c
+//
+// Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com
+//          Philipp Zabel <philipp.zabel@gmail.com>
+//          Denis Grigoriev <dgreenday@gmail.com>
+//          Vasily Khoruzhick <anarsoul@gmail.com>
+
+#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 int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
+static int rx1950_startup(struct snd_pcm_substream *substream);
+static int rx1950_hw_params(struct snd_pcm_substream *substream,
+				struct snd_pcm_hw_params *params);
+static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
+				struct snd_kcontrol *kcontrol, int event);
+
+static const unsigned int rates[] = {
+	16000,
+	44100,
+	48000,
+};
+
+static const struct snd_pcm_hw_constraint_list hw_rates = {
+	.count = ARRAY_SIZE(rates),
+	.list = rates,
+};
+
+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[] = {
+	[0] = {
+		.name			= "hp-gpio",
+		.report			= SND_JACK_HEADPHONE,
+		.invert			= 1,
+		.debounce_time		= 200,
+	},
+};
+
+static const struct snd_soc_ops rx1950_ops = {
+	.startup	= rx1950_startup,
+	.hw_params	= rx1950_hw_params,
+};
+
+/* 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 rx1950_uda1380_dai[] = {
+	{
+		.name		= "uda1380",
+		.stream_name	= "UDA1380 Duplex",
+		.init		= rx1950_uda1380_init,
+		.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+				  SND_SOC_DAIFMT_CBS_CFS,
+		.ops		= &rx1950_ops,
+		SND_SOC_DAILINK_REG(uda1380),
+	},
+};
+
+/* rx1950 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", rx1950_spk_power),
+};
+
+/* rx1950 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 struct snd_soc_card rx1950_asoc = {
+	.name = "rx1950",
+	.owner = THIS_MODULE,
+	.dai_link = rx1950_uda1380_dai,
+	.num_links = ARRAY_SIZE(rx1950_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 rx1950_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 struct gpio_desc *gpiod_speaker_power;
+
+static int rx1950_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;
+}
+
+static int rx1950_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);
+	int clk_source, fs_mode;
+
+	switch (rate) {
+	case 16000:
+	case 48000:
+		clk_source = S3C24XX_CLKSRC_PCLK;
+		fs_mode = S3C2410_IISMOD_256FS;
+		div = s3c24xx_i2s_get_clockrate() / (256 * rate);
+		if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
+			div++;
+		break;
+	case 44100:
+	case 88200:
+		clk_source = S3C24XX_CLKSRC_MPLL;
+		fs_mode = S3C2410_IISMOD_384FS;
+		div = 1;
+		break;
+	default:
+		printk(KERN_ERR "%s: rate %d is not supported\n",
+			__func__, rate);
+		return -EINVAL;
+	}
+
+	/* select clock source */
+	ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, 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,
+		fs_mode);
+	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 int rx1950_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;
+}
+
+static int rx1950_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+
+	/* configure some gpios */
+	gpiod_speaker_power = devm_gpiod_get(dev, "speaker-power", GPIOD_OUT_LOW);
+	if (IS_ERR(gpiod_speaker_power)) {
+		dev_err(dev, "cannot get gpio\n");
+		return PTR_ERR(gpiod_speaker_power);
+	}
+
+	hp_jack_gpios[0].gpiod_dev = dev;
+	rx1950_asoc.dev = dev;
+
+	return devm_snd_soc_register_card(dev, &rx1950_asoc);
+}
+
+static struct platform_driver rx1950_audio = {
+	.driver = {
+		.name = "rx1950-audio",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = rx1950_probe,
+};
+
+module_platform_driver(rx1950_audio);
+
+/* Module information */
+MODULE_AUTHOR("Vasily Khoruzhick");
+MODULE_DESCRIPTION("ALSA SoC RX1950");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:rx1950-audio");