1 files changed, 284 insertions, 0 deletions
diff --git a/sound/soc/intel/boards/bytcht_cx2072x.c b/sound/soc/intel/boards/bytcht_cx2072x.c
new file mode 100644
index 000000000..0b50b3646
--- /dev/null
+++ b/sound/soc/intel/boards/bytcht_cx2072x.c
@@ -0,0 +1,284 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with
+// CX2072X codec
+//
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/jack.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include "../../codecs/cx2072x.h"
+#include "../atom/sst-atom-controls.h"
+
+static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Int Mic", NULL),
+	SND_SOC_DAPM_SPK("Ext Spk", NULL),
+};
+
+static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {
+	/* External Speakers: HFL, HFR */
+	{"Headphone", NULL, "PORTA"},
+	{"Ext Spk", NULL, "PORTG"},
+	{"PORTC", NULL, "Int Mic"},
+	{"PORTD", NULL, "Headset Mic"},
+
+	{"Playback", NULL, "ssp2 Tx"},
+	{"ssp2 Tx", NULL, "codec_out0"},
+	{"ssp2 Tx", NULL, "codec_out1"},
+	{"codec_in0", NULL, "ssp2 Rx"},
+	{"codec_in1", NULL, "ssp2 Rx"},
+	{"ssp2 Rx", NULL, "Capture"},
+};
+
+static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+	SOC_DAPM_PIN_SWITCH("Int Mic"),
+	SOC_DAPM_PIN_SWITCH("Ext Spk"),
+};
+
+static struct snd_soc_jack byt_cht_cx2072x_headset;
+
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+	{
+		.pin = "Headphone",
+		.mask = SND_JACK_HEADPHONE,
+	},
+};
+
+static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;
+static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {
+	{ "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },
+	{},
+};
+
+static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_card *card = rtd->card;
+	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;
+	int ret;
+
+	if (devm_acpi_dev_add_driver_gpios(codec->dev,
+					   byt_cht_cx2072x_acpi_gpios))
+		dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");
+
+	card->dapm.idle_bias_off = true;
+
+	/* set the default PLL rate, the clock is handled by the codec driver */
+	ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), CX2072X_MCLK_EXTERNAL_PLL,
+				     19200000, SND_SOC_CLOCK_IN);
+	if (ret) {
+		dev_err(rtd->dev, "Could not set sysclk\n");
+		return ret;
+	}
+
+	ret = snd_soc_card_jack_new(card, "Headset",
+				    SND_JACK_HEADSET | SND_JACK_BTN_0,
+				    &byt_cht_cx2072x_headset,
+				    byt_cht_cx2072x_headset_pins,
+				    ARRAY_SIZE(byt_cht_cx2072x_headset_pins));
+	if (ret)
+		return ret;
+
+	snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);
+
+	snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), 50);
+
+	return 0;
+}
+
+static int byt_cht_cx2072x_fixup(struct snd_soc_pcm_runtime *rtd,
+				 struct snd_pcm_hw_params *params)
+{
+	struct snd_interval *rate =
+		hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+	struct snd_interval *channels =
+		hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+	int ret;
+
+	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
+	rate->min = rate->max = 48000;
+	channels->min = channels->max = 2;
+
+	/* set SSP2 to 24-bit */
+	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
+
+	/*
+	 * Default mode for SSP configuration is TDM 4 slot, override config
+	 * with explicit setting to I2S 2ch 24-bit. The word length is set with
+	 * dai_set_tdm_slot() since there is no other API exposed
+	 */
+	ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
+				SND_SOC_DAIFMT_I2S     |
+				SND_SOC_DAIFMT_NB_NF   |
+				SND_SOC_DAIFMT_CBS_CFS);
+	if (ret < 0) {
+		dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
+	if (ret < 0) {
+		dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)
+{
+	return snd_pcm_hw_constraint_single(substream->runtime,
+					    SNDRV_PCM_HW_PARAM_RATE, 48000);
+}
+
+static struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {
+	.startup = byt_cht_cx2072x_aif1_startup,
+};
+
+SND_SOC_DAILINK_DEF(dummy,
+	DAILINK_COMP_ARRAY(COMP_DUMMY()));
+
+SND_SOC_DAILINK_DEF(media,
+	DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
+
+SND_SOC_DAILINK_DEF(deepbuffer,
+	DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
+
+SND_SOC_DAILINK_DEF(ssp2,
+	DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
+
+SND_SOC_DAILINK_DEF(cx2072x,
+	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));
+
+SND_SOC_DAILINK_DEF(platform,
+	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
+
+static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
+	[MERR_DPCM_AUDIO] = {
+		.name = "Audio Port",
+		.stream_name = "Audio",
+		.nonatomic = true,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.ops = &byt_cht_cx2072x_aif1_ops,
+		SND_SOC_DAILINK_REG(media, dummy, platform),
+	},
+	[MERR_DPCM_DEEP_BUFFER] = {
+		.name = "Deep-Buffer Audio Port",
+		.stream_name = "Deep-Buffer Audio",
+		.nonatomic = true,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.ops = &byt_cht_cx2072x_aif1_ops,
+		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
+	},
+	/* back ends */
+	{
+		.name = "SSP2-Codec",
+		.id = 0,
+		.no_pcm = 1,
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+					      | SND_SOC_DAIFMT_CBS_CFS,
+		.init = byt_cht_cx2072x_init,
+		.be_hw_params_fixup = byt_cht_cx2072x_fixup,
+		.nonatomic = true,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),
+	},
+};
+
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+/* use space before codec name to simplify card ID, and simplify driver name */
+#define CARD_NAME "bytcht cx2072x" /* card name will be 'sof-bytcht cx2072x' */
+#define DRIVER_NAME "SOF"
+#else
+#define CARD_NAME "bytcht-cx2072x"
+#define DRIVER_NAME NULL /* card name will be used for driver name */
+#endif
+
+/* SoC card */
+static struct snd_soc_card byt_cht_cx2072x_card = {
+	.name = CARD_NAME,
+	.driver_name = DRIVER_NAME,
+	.owner = THIS_MODULE,
+	.dai_link = byt_cht_cx2072x_dais,
+	.num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),
+	.dapm_widgets = byt_cht_cx2072x_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),
+	.dapm_routes = byt_cht_cx2072x_audio_map,
+	.num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),
+	.controls = byt_cht_cx2072x_controls,
+	.num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),
+};
+
+static char codec_name[SND_ACPI_I2C_ID_LEN];
+
+static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
+{
+	struct snd_soc_acpi_mach *mach;
+	struct acpi_device *adev;
+	int dai_index = 0;
+	int i, ret;
+
+	byt_cht_cx2072x_card.dev = &pdev->dev;
+	mach = dev_get_platdata(&pdev->dev);
+
+	/* fix index of codec dai */
+	for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {
+		if (!strcmp(byt_cht_cx2072x_dais[i].codecs->name,
+			    "i2c-14F10720:00")) {
+			dai_index = i;
+			break;
+		}
+	}
+
+	/* fixup codec name based on HID */
+	adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
+	if (adev) {
+		snprintf(codec_name, sizeof(codec_name), "i2c-%s",
+			 acpi_dev_name(adev));
+		put_device(&adev->dev);
+		byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;
+	}
+
+	/* override plaform name, if required */
+	ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,
+						    mach->mach_params.platform);
+	if (ret)
+		return ret;
+
+	return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);
+}
+
+static struct platform_driver snd_byt_cht_cx2072x_driver = {
+	.driver = {
+		.name = "bytcht_cx2072x",
+#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
+		.pm = &snd_soc_pm_ops,
+#endif
+	},
+	.probe = snd_byt_cht_cx2072x_probe,
+};
+module_platform_driver(snd_byt_cht_cx2072x_driver);
+
+MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:bytcht_cx2072x");