1 files changed, 360 insertions, 0 deletions
diff --git a/sound/soc/samsung/neo1973_wm8753.c b/sound/soc/samsung/neo1973_wm8753.c
new file mode 100644
index 000000000..e9f233402
--- /dev/null
+++ b/sound/soc/samsung/neo1973_wm8753.c
@@ -0,0 +1,360 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// neo1973_wm8753.c - SoC audio for Openmoko Neo1973 and Freerunner devices
+//
+// Copyright 2007 Openmoko Inc
+// Author: Graeme Gregory <graeme@openmoko.org>
+// Copyright 2007 Wolfson Microelectronics PLC.
+// Author: Graeme Gregory
+//         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
+// Copyright 2009 Wolfson Microelectronics
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/gpio/consumer.h>
+
+#include <sound/soc.h>
+
+#include "regs-iis.h"
+#include "../codecs/wm8753.h"
+#include "s3c24xx-i2s.h"
+
+static int neo1973_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 pll_out = 0, bclk = 0;
+	int ret = 0;
+	unsigned long iis_clkrate;
+
+	iis_clkrate = s3c24xx_i2s_get_clockrate();
+
+	switch (params_rate(params)) {
+	case 8000:
+	case 16000:
+		pll_out = 12288000;
+		break;
+	case 48000:
+		bclk = WM8753_BCLK_DIV_4;
+		pll_out = 12288000;
+		break;
+	case 96000:
+		bclk = WM8753_BCLK_DIV_2;
+		pll_out = 12288000;
+		break;
+	case 11025:
+		bclk = WM8753_BCLK_DIV_16;
+		pll_out = 11289600;
+		break;
+	case 22050:
+		bclk = WM8753_BCLK_DIV_8;
+		pll_out = 11289600;
+		break;
+	case 44100:
+		bclk = WM8753_BCLK_DIV_4;
+		pll_out = 11289600;
+		break;
+	case 88200:
+		bclk = WM8753_BCLK_DIV_2;
+		pll_out = 11289600;
+		break;
+	}
+
+	/* set the codec system clock for DAC and ADC */
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_MCLK, pll_out,
+		SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	/* set MCLK division for sample rate */
+	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
+		S3C2410_IISMOD_32FS);
+	if (ret < 0)
+		return ret;
+
+	/* set codec BCLK division for sample rate */
+	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_BCLKDIV, bclk);
+	if (ret < 0)
+		return ret;
+
+	/* set prescaler division for sample rate */
+	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
+		S3C24XX_PRESCALE(4, 4));
+	if (ret < 0)
+		return ret;
+
+	/* codec PLL input is PCLK/4 */
+	ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0,
+		iis_clkrate / 4, pll_out);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int neo1973_hifi_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+
+	/* disable the PLL */
+	return snd_soc_dai_set_pll(codec_dai, WM8753_PLL1, 0, 0, 0);
+}
+
+/*
+ * Neo1973 WM8753 HiFi DAI opserations.
+ */
+static const struct snd_soc_ops neo1973_hifi_ops = {
+	.hw_params = neo1973_hifi_hw_params,
+	.hw_free = neo1973_hifi_hw_free,
+};
+
+static int neo1973_voice_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);
+	unsigned int pcmdiv = 0;
+	int ret = 0;
+	unsigned long iis_clkrate;
+
+	iis_clkrate = s3c24xx_i2s_get_clockrate();
+
+	if (params_rate(params) != 8000)
+		return -EINVAL;
+	if (params_channels(params) != 1)
+		return -EINVAL;
+
+	pcmdiv = WM8753_PCM_DIV_6; /* 2.048 MHz */
+
+	/* set the codec system clock for DAC and ADC */
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8753_PCMCLK, 12288000,
+		SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	/* set codec PCM division for sample rate */
+	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8753_PCMDIV, pcmdiv);
+	if (ret < 0)
+		return ret;
+
+	/* configure and enable PLL for 12.288MHz output */
+	ret = snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0,
+		iis_clkrate / 4, 12288000);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int neo1973_voice_hw_free(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+
+	/* disable the PLL */
+	return snd_soc_dai_set_pll(codec_dai, WM8753_PLL2, 0, 0, 0);
+}
+
+static const struct snd_soc_ops neo1973_voice_ops = {
+	.hw_params = neo1973_voice_hw_params,
+	.hw_free = neo1973_voice_hw_free,
+};
+
+static struct gpio_desc *gpiod_hp_in, *gpiod_amp_shut;
+static int gta02_speaker_enabled;
+
+static int lm4853_set_spk(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	gta02_speaker_enabled = ucontrol->value.integer.value[0];
+
+	gpiod_set_value(gpiod_hp_in, !gta02_speaker_enabled);
+
+	return 0;
+}
+
+static int lm4853_get_spk(struct snd_kcontrol *kcontrol,
+	struct snd_ctl_elem_value *ucontrol)
+{
+	ucontrol->value.integer.value[0] = gta02_speaker_enabled;
+	return 0;
+}
+
+static int lm4853_event(struct snd_soc_dapm_widget *w,
+			struct snd_kcontrol *k, int event)
+{
+	gpiod_set_value(gpiod_amp_shut, SND_SOC_DAPM_EVENT_OFF(event));
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget neo1973_wm8753_dapm_widgets[] = {
+	SND_SOC_DAPM_LINE("GSM Line Out", NULL),
+	SND_SOC_DAPM_LINE("GSM Line In", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Handset Mic", NULL),
+	SND_SOC_DAPM_SPK("Handset Spk", NULL),
+	SND_SOC_DAPM_SPK("Stereo Out", lm4853_event),
+};
+
+static const struct snd_soc_dapm_route neo1973_wm8753_routes[] = {
+	/* Connections to the GSM Module */
+	{"GSM Line Out", NULL, "MONO1"},
+	{"GSM Line Out", NULL, "MONO2"},
+	{"RXP", NULL, "GSM Line In"},
+	{"RXN", NULL, "GSM Line In"},
+
+	/* Connections to Headset */
+	{"MIC1", NULL, "Mic Bias"},
+	{"Mic Bias", NULL, "Headset Mic"},
+
+	/* Call Mic */
+	{"MIC2", NULL, "Mic Bias"},
+	{"MIC2N", NULL, "Mic Bias"},
+	{"Mic Bias", NULL, "Handset Mic"},
+
+	/* Connect the ALC pins */
+	{"ACIN", NULL, "ACOP"},
+
+	/* Connections to the amp */
+	{"Stereo Out", NULL, "LOUT1"},
+	{"Stereo Out", NULL, "ROUT1"},
+
+	/* Call Speaker */
+	{"Handset Spk", NULL, "LOUT2"},
+	{"Handset Spk", NULL, "ROUT2"},
+};
+
+static const struct snd_kcontrol_new neo1973_wm8753_controls[] = {
+	SOC_DAPM_PIN_SWITCH("GSM Line Out"),
+	SOC_DAPM_PIN_SWITCH("GSM Line In"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+	SOC_DAPM_PIN_SWITCH("Handset Mic"),
+	SOC_DAPM_PIN_SWITCH("Handset Spk"),
+	SOC_DAPM_PIN_SWITCH("Stereo Out"),
+
+	SOC_SINGLE_BOOL_EXT("Amp Spk Switch", 0,
+		lm4853_get_spk,
+		lm4853_set_spk),
+};
+
+static int neo1973_wm8753_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+
+	/* set endpoints to default off mode */
+	snd_soc_dapm_disable_pin(&card->dapm, "GSM Line Out");
+	snd_soc_dapm_disable_pin(&card->dapm, "GSM Line In");
+	snd_soc_dapm_disable_pin(&card->dapm, "Headset Mic");
+	snd_soc_dapm_disable_pin(&card->dapm, "Handset Mic");
+	snd_soc_dapm_disable_pin(&card->dapm, "Stereo Out");
+	snd_soc_dapm_disable_pin(&card->dapm, "Handset Spk");
+
+	/* allow audio paths from the GSM modem to run during suspend */
+	snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line Out");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "GSM Line In");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Mic");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Stereo Out");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Handset Spk");
+
+	return 0;
+}
+
+SND_SOC_DAILINK_DEFS(wm8753,
+	DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-hifi")),
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));
+
+SND_SOC_DAILINK_DEFS(bluetooth,
+	DAILINK_COMP_ARRAY(COMP_CPU("bt-sco-pcm")),
+	DAILINK_COMP_ARRAY(COMP_CODEC("wm8753.0-001a", "wm8753-voice")));
+
+static struct snd_soc_dai_link neo1973_dai[] = {
+{ /* Hifi Playback - for similatious use with voice below */
+	.name = "WM8753",
+	.stream_name = "WM8753 HiFi",
+	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+		   SND_SOC_DAIFMT_CBM_CFM,
+	.init = neo1973_wm8753_init,
+	.ops = &neo1973_hifi_ops,
+	SND_SOC_DAILINK_REG(wm8753),
+},
+{ /* Voice via BT */
+	.name = "Bluetooth",
+	.stream_name = "Voice",
+	.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
+		   SND_SOC_DAIFMT_CBS_CFS,
+	.ops = &neo1973_voice_ops,
+	SND_SOC_DAILINK_REG(bluetooth),
+},
+};
+
+static struct snd_soc_aux_dev neo1973_aux_devs[] = {
+	{
+		.dlc = COMP_AUX("dfbmcs320.0"),
+	},
+};
+
+static struct snd_soc_codec_conf neo1973_codec_conf[] = {
+	{
+		.dlc = COMP_CODEC_CONF("lm4857.0-007c"),
+		.name_prefix = "Amp",
+	},
+};
+
+static struct snd_soc_card neo1973 = {
+	.name = "neo1973gta02",
+	.owner = THIS_MODULE,
+	.dai_link = neo1973_dai,
+	.num_links = ARRAY_SIZE(neo1973_dai),
+	.aux_dev = neo1973_aux_devs,
+	.num_aux_devs = ARRAY_SIZE(neo1973_aux_devs),
+	.codec_conf = neo1973_codec_conf,
+	.num_configs = ARRAY_SIZE(neo1973_codec_conf),
+
+	.controls = neo1973_wm8753_controls,
+	.num_controls = ARRAY_SIZE(neo1973_wm8753_controls),
+	.dapm_widgets = neo1973_wm8753_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(neo1973_wm8753_dapm_widgets),
+	.dapm_routes = neo1973_wm8753_routes,
+	.num_dapm_routes = ARRAY_SIZE(neo1973_wm8753_routes),
+	.fully_routed = true,
+};
+
+static int neo1973_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+
+	gpiod_hp_in = devm_gpiod_get(dev, "hp", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpiod_hp_in)) {
+		dev_err(dev, "missing gpio %s\n", "hp");
+		return PTR_ERR(gpiod_hp_in);
+	}
+	gpiod_amp_shut = devm_gpiod_get(dev, "amp-shut", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpiod_amp_shut)) {
+		dev_err(dev, "missing gpio %s\n", "amp-shut");
+		return PTR_ERR(gpiod_amp_shut);
+	}
+
+	neo1973.dev = dev;
+	return devm_snd_soc_register_card(dev, &neo1973);
+}
+
+static struct platform_driver neo1973_audio = {
+	.driver = {
+		.name = "neo1973-audio",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = neo1973_probe,
+};
+module_platform_driver(neo1973_audio);
+
+/* Module information */
+MODULE_AUTHOR("Graeme Gregory, graeme@openmoko.org, www.openmoko.org");
+MODULE_DESCRIPTION("ALSA SoC WM8753 Neo1973 and Frerunner");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:neo1973-audio");