[PATCH 2/2] ASoC: Intel: boards: Add Baytrail RT5660 machine driver

[Shrirang Bagul <shrirang.bagul@canonical.com>]

This is used by Dell Edge IoT Gateways.

Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com>
---
 sound/soc/intel/Kconfig               |  13 +
 sound/soc/intel/atom/sst/sst_acpi.c   |   2 +
 sound/soc/intel/boards/Makefile       |   2 +
 sound/soc/intel/boards/bytcr_rt5660.c | 573 ++++++++++++++++++++++++++++++++++
 4 files changed, 590 insertions(+)
 create mode 100644 sound/soc/intel/boards/bytcr_rt5660.c

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index fd5d1e0..04027e6 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -172,6 +172,19 @@ config SND_SOC_INTEL_BYTCR_RT5651_MACH
           Say Y if you have such a device.
           If unsure select "N".
 
+config SND_SOC_INTEL_BYTCR_RT5660_MACH
+	tristate "ASoC Audio driver for Intel Baytrail and Baytrail-CR with RT5660 codec"
+	depends on X86 && I2C && ACPI
+	select SND_SOC_RT5660
+	select SND_SST_MFLD_PLATFORM
+	select SND_SST_IPC_ACPI
+	select SND_SOC_INTEL_SST_MATCH if ACPI
+	help
+	  This adds support for ASoC machine driver for Intel(R) Baytrail and Baytrail-CR
+	  platforms with RT5660 audio codec.
+	  Say Y if you have such a device.
+	  If unsure select "N".
+
 config SND_SOC_INTEL_CHT_BSW_RT5672_MACH
         tristate "ASoC Audio driver for Intel Cherrytrail & Braswell with RT5672 codec"
         depends on X86_INTEL_LPSS && I2C && ACPI
diff --git a/sound/soc/intel/atom/sst/sst_acpi.c b/sound/soc/intel/atom/sst/sst_acpi.c
index f4d92bb..a7f8400 100644
--- a/sound/soc/intel/atom/sst/sst_acpi.c
+++ b/sound/soc/intel/atom/sst/sst_acpi.c
@@ -445,6 +445,8 @@ static struct sst_acpi_mach sst_acpi_bytcr[] = {
 						&byt_rvp_platform_data },
 	{"10EC5651", "bytcr_rt5651", "intel/fw_sst_0f28.bin", "bytcr_rt5651", NULL,
 						&byt_rvp_platform_data },
+	{"10EC3277", "bytcr_rt5660", "intel/fw_sst_0f28.bin", "bytcr_rt5660", NULL,
+						&byt_rvp_platform_data },
 	{},
 };
 
diff --git a/sound/soc/intel/boards/Makefile b/sound/soc/intel/boards/Makefile
index 5639f10..32255ee 100644
--- a/sound/soc/intel/boards/Makefile
+++ b/sound/soc/intel/boards/Makefile
@@ -7,6 +7,7 @@ snd-soc-sst-bxt-da7219_max98357a-objs := bxt_da7219_max98357a.o
 snd-soc-sst-bxt-rt298-objs := bxt_rt298.o
 snd-soc-sst-bytcr-rt5640-objs := bytcr_rt5640.o
 snd-soc-sst-bytcr-rt5651-objs := bytcr_rt5651.o
+snd-soc-sst-bytcr-rt5660-objs := bytcr_rt5660.o
 snd-soc-sst-cht-bsw-rt5672-objs := cht_bsw_rt5672.o
 snd-soc-sst-cht-bsw-rt5645-objs := cht_bsw_rt5645.o
 snd-soc-sst-cht-bsw-max98090_ti-objs := cht_bsw_max98090_ti.o
@@ -23,6 +24,7 @@ obj-$(CONFIG_SND_SOC_INTEL_BROADWELL_MACH) += snd-soc-sst-broadwell.o
 obj-$(CONFIG_SND_SOC_INTEL_BDW_RT5677_MACH) += snd-soc-sst-bdw-rt5677-mach.o
 obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5640_MACH) += snd-soc-sst-bytcr-rt5640.o
 obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5651_MACH) += snd-soc-sst-bytcr-rt5651.o
+obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5660_MACH) += snd-soc-sst-bytcr-rt5660.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_RT5672_MACH) += snd-soc-sst-cht-bsw-rt5672.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_RT5645_MACH) += snd-soc-sst-cht-bsw-rt5645.o
 obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH) += snd-soc-sst-cht-bsw-max98090_ti.o
diff --git a/sound/soc/intel/boards/bytcr_rt5660.c b/sound/soc/intel/boards/bytcr_rt5660.c
new file mode 100644
index 0000000..0cd989d
--- /dev/null
+++ b/sound/soc/intel/boards/bytcr_rt5660.c
@@ -0,0 +1,573 @@
+/*
+ *  Intel Baytrail SST RT5660 machine driver
+ *  Copyright (C) 2016 Shrirang Bagul <shrirang.bagul@canonical.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ */
+
+#define DEBUG
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/dmi.h>
+#include <linux/slab.h>
+#include <asm/cpu_device_id.h>
+#include <asm/platform_sst_audio.h>
+#include <linux/clk.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/jack.h>
+#include "../../codecs/rt5660.h"
+#include "../atom/sst-atom-controls.h"
+#include "../common/sst-acpi.h"
+#include "../common/sst-dsp.h"
+
+#define BYT_RT5660_MAP(quirk)	((quirk) & 0xff)
+#define BYT_RT5660_SSP0_AIF1	BIT(16)
+#define BYT_RT5660_MCLK_EN	BIT(17)
+#define BYT_RT5660_MCLK_25MHZ	BIT(18)
+
+struct byt_rt5660_private {
+	struct clk *mclk;
+	struct gpio_desc *gpio_lo_mute;
+};
+
+static unsigned long byt_rt5660_quirk = (BYT_RT5660_MCLK_EN |
+		BYT_RT5660_MCLK_25MHZ);
+
+static void log_quirks(struct device *dev)
+{
+	if (byt_rt5660_quirk & BYT_RT5660_MCLK_EN)
+		dev_info(dev, "quirk MCLK_EN enabled");
+	if (byt_rt5660_quirk & BYT_RT5660_MCLK_25MHZ)
+		dev_info(dev, "quirk MCLK_25MHZ enabled");
+	if (byt_rt5660_quirk & BYT_RT5660_SSP0_AIF1)
+		dev_info(dev, "quirk SSP0_AIF1 enabled");
+}
+
+#define BYT_CODEC_DAI1	"rt5660-aif1"
+
+static inline struct snd_soc_dai *byt_get_codec_dai(struct snd_soc_card *card)
+{
+	struct snd_soc_pcm_runtime *rtd;
+
+	list_for_each_entry(rtd, &card->rtd_list, list) {
+		if (!strncmp(rtd->codec_dai->name, BYT_CODEC_DAI1,
+			     strlen(BYT_CODEC_DAI1)))
+			return rtd->codec_dai;
+	}
+	return NULL;
+}
+
+static int platform_clock_control(struct snd_soc_dapm_widget *w,
+				  struct snd_kcontrol *k, int  event)
+{
+	struct snd_soc_dapm_context *dapm = w->dapm;
+	struct snd_soc_card *card = dapm->card;
+	struct snd_soc_dai *codec_dai;
+	struct byt_rt5660_private *priv = snd_soc_card_get_drvdata(card);
+	int ret;
+
+	codec_dai = byt_get_codec_dai(card);
+	if (!codec_dai) {
+		dev_err(card->dev,
+			"Codec dai not found; Unable to set platform clock\n");
+		return -EIO;
+	}
+
+	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		if ((byt_rt5660_quirk & BYT_RT5660_MCLK_EN) && priv->mclk) {
+			ret = clk_prepare_enable(priv->mclk);
+			if (ret < 0) {
+				dev_err(card->dev,
+					"could not configure MCLK state");
+				return ret;
+			}
+		}
+		ret = snd_soc_dai_set_sysclk(codec_dai, RT5660_SCLK_S_PLL1,
+					     48000 * 512,
+					     SND_SOC_CLOCK_IN);
+	} else {
+		/*
+		 * Set codec clock source to internal clock before
+		 * turning off the platform clock. Codec needs clock
+		 * for Jack detection and button press
+		 */
+		ret = snd_soc_dai_set_sysclk(codec_dai, RT5660_SCLK_S_RCCLK,
+					     0,
+					     SND_SOC_CLOCK_IN);
+		if (!ret) {
+			if ((byt_rt5660_quirk & BYT_RT5660_MCLK_EN) && priv->mclk)
+				clk_disable_unprepare(priv->mclk);
+		}
+	}
+
+	if (ret < 0) {
+		dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int byt_rt5660_event_lineout(struct snd_soc_dapm_widget *w,
+			struct snd_kcontrol *k, int event)
+{
+	struct snd_soc_dapm_context *dapm = w->dapm;
+	struct snd_soc_card *card = dapm->card;
+	struct byt_rt5660_private *priv = snd_soc_card_get_drvdata(card);
+
+	gpiod_set_value_cansleep(priv->gpio_lo_mute,
+			!(SND_SOC_DAPM_EVENT_ON(event)));
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget byt_rt5660_widgets[] = {
+	SND_SOC_DAPM_MIC("Line In", NULL),
+	SND_SOC_DAPM_LINE("Line Out", byt_rt5660_event_lineout),
+	SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
+			platform_clock_control, SND_SOC_DAPM_PRE_PMU |
+			SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route byt_rt5660_audio_map[] = {
+	{"IN1P", NULL, "Line In"},
+	{"IN2P", NULL, "Line In"},
+	{"Line Out", NULL, "LOUTR"},
+	{"Line Out", NULL, "LOUTL"},
+
+	{"Line In", NULL, "Platform Clock"},
+	{"Line Out", NULL, "Platform Clock"},
+};
+
+static const struct snd_soc_dapm_route byt_rt5660_ssp2_aif1_map[] = {
+	{"ssp2 Tx", NULL, "codec_out0"},
+	{"ssp2 Tx", NULL, "codec_out1"},
+	{"codec_in0", NULL, "ssp2 Rx"},
+	{"codec_in1", NULL, "ssp2 Rx"},
+
+	{"AIF1 Playback", NULL, "ssp2 Tx"},
+	{"ssp2 Rx", NULL, "AIF1 Capture"},
+};
+
+static const struct snd_soc_dapm_route byt_rt5660_ssp0_aif1_map[] = {
+	{"ssp0 Tx", NULL, "modem_out"},
+	{"modem_in", NULL, "ssp0 Rx"},
+
+	{"AIF1 Playback", NULL, "ssp0 Tx"},
+	{"ssp0 Rx", NULL, "AIF1 Capture"},
+};
+
+static const struct snd_kcontrol_new byt_rt5660_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Line In"),
+	SOC_DAPM_PIN_SWITCH("Line Out"),
+};
+
+static int byt_rt5660_aif1_hw_params(struct snd_pcm_substream *substream,
+				struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *codec_dai = rtd->codec_dai;
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, RT5660_SCLK_S_PLL1,
+				     params_rate(params) * 256,
+				     SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		dev_err(codec_dai->dev, "can't set codec clock %d\n", ret);
+		return ret;
+	}
+
+	if (!(byt_rt5660_quirk & BYT_RT5660_MCLK_EN)) {
+		/* use bitclock as PLL input */
+		if ((byt_rt5660_quirk & BYT_RT5660_SSP0_AIF1)) {
+			/* 2x16 bit slots on SSP0 */
+			ret = snd_soc_dai_set_pll(codec_dai, 0,
+						RT5660_PLL1_S_BCLK,
+						params_rate(params) * 32,
+						params_rate(params) * 512);
+		} else {
+			/* 2x15 bit slots on SSP2 */
+			ret = snd_soc_dai_set_pll(codec_dai, 0,
+						RT5660_PLL1_S_BCLK,
+						params_rate(params) * 50,
+						params_rate(params) * 512);
+		}
+	} else {
+		if (byt_rt5660_quirk & BYT_RT5660_MCLK_25MHZ) {
+			ret = snd_soc_dai_set_pll(codec_dai, 0,
+					RT5660_SCLK_S_MCLK,
+					25000000,
+					params_rate(params) * 512);
+		} else {
+			ret = snd_soc_dai_set_pll(codec_dai, 0,
+					RT5660_SCLK_S_MCLK,
+					19200000,
+					params_rate(params) * 512);
+		}
+	}
+
+	if (ret < 0) {
+		dev_err(codec_dai->dev, "can't set codec pll: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int byt_rt5660_quirk_cb(const struct dmi_system_id *id)
+{
+	byt_rt5660_quirk = (unsigned long)id->driver_data;
+	return 1;
+}
+
+static const struct dmi_system_id byt_rt5660_quirk_table[] = {
+	{
+		.callback = byt_rt5660_quirk_cb,
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Edge Gateway 3003"),
+		},
+		.driver_data = (unsigned long *)(BYT_RT5660_MCLK_EN |
+				BYT_RT5660_MCLK_25MHZ),
+	},
+	{},
+};
+
+static int byt_rt5660_init(struct snd_soc_pcm_runtime *runtime)
+{
+	int ret;
+	struct snd_soc_card *card = runtime->card;
+	struct byt_rt5660_private *priv = snd_soc_card_get_drvdata(card);
+	struct snd_soc_codec *codec = runtime->codec;
+
+	card->dapm.idle_bias_off = true;
+
+	/* Request rt5660 GPIO for lineout mute control */
+	priv->gpio_lo_mute = devm_gpiod_get_index(codec->dev,
+			"lineout-mute", 0, 0);
+	if (IS_ERR(priv->gpio_lo_mute)) {
+		dev_err(card->dev, "Can't find GPIO_MUTE# gpio\n");
+		return PTR_ERR(priv->gpio_lo_mute);
+	}
+	gpiod_direction_output(priv->gpio_lo_mute, 1);
+
+	ret = snd_soc_add_card_controls(card, byt_rt5660_controls,
+					ARRAY_SIZE(byt_rt5660_controls));
+	if (ret) {
+		dev_err(card->dev, "unable to add card controls\n");
+		return ret;
+	}
+
+	if (byt_rt5660_quirk & BYT_RT5660_SSP0_AIF1) {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_rt5660_ssp0_aif1_map,
+					ARRAY_SIZE(byt_rt5660_ssp0_aif1_map));
+	} else {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_rt5660_ssp2_aif1_map,
+					ARRAY_SIZE(byt_rt5660_ssp2_aif1_map));
+	}
+	if (ret)
+		return ret;
+
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Line Out");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Line In");
+	snd_soc_dapm_enable_pin_unlocked(&card->dapm, "Line Out");
+	snd_soc_dapm_enable_pin_unlocked(&card->dapm, "Line In");
+
+	if ((byt_rt5660_quirk & BYT_RT5660_MCLK_EN) && priv->mclk) {
+		/*
+		 * The firmware might enable the clock at
+		 * boot (this information may or may not
+		 * be reflected in the enable clock register).
+		 * To change the rate we must disable the clock
+		 * first to cover these cases. Due to common
+		 * clock framework restrictions that do not allow
+		 * to disable a clock that has not been enabled,
+		 * we need to enable the clock first.
+		 */
+		ret = clk_prepare_enable(priv->mclk);
+		if (!ret)
+			clk_disable_unprepare(priv->mclk);
+
+		if (byt_rt5660_quirk & BYT_RT5660_MCLK_25MHZ)
+			ret = clk_set_rate(priv->mclk, 25000000);
+		else
+			ret = clk_set_rate(priv->mclk, 19200000);
+
+		if (ret)
+			dev_err(card->dev, "unable to set MCLK rate\n");
+	}
+
+	return ret;
+}
+
+static const struct snd_soc_pcm_stream byt_rt5660_dai_params = {
+	.formats = SNDRV_PCM_FMTBIT_S24_LE,
+	.rate_min = 48000,
+	.rate_max = 48000,
+	.channels_min = 2,
+	.channels_max = 2,
+};
+
+static int byt_rt5660_codec_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 */
+	rate->min = rate->max = 48000;
+	channels->min = channels->max = 2;
+
+	if ((byt_rt5660_quirk & BYT_RT5660_SSP0_AIF1)) {
+
+		/* set SSP0 to 16-bit */
+		params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
+
+		/*
+		 * Default mode for SSP configuration is TDM 4 slot, override config
+		 * with explicit setting to I2S 2ch 16-bit. The word length is set with
+		 * dai_set_tdm_slot() since there is no other API exposed
+		 */
+		ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
+					SND_SOC_DAIFMT_I2S     |
+					SND_SOC_DAIFMT_NB_IF   |
+					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(rtd->cpu_dai, 0x3, 0x3, 2, 16);
+		if (ret < 0) {
+			dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
+			return ret;
+		}
+
+	} else {
+
+		/* 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(rtd->cpu_dai,
+					SND_SOC_DAIFMT_I2S     |
+					SND_SOC_DAIFMT_NB_IF   |
+					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(rtd->cpu_dai, 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_rt5660_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_rt5660_aif1_ops = {
+	.startup = byt_rt5660_aif1_startup,
+};
+
+static struct snd_soc_ops byt_rt5660_be_ssp2_ops = {
+	.hw_params = byt_rt5660_aif1_hw_params,
+};
+
+static struct snd_soc_dai_link byt_rt5660_dais[] = {
+	[MERR_DPCM_AUDIO] = {
+		.name = "Baytrail Audio Port",
+		.stream_name = "Baytrail Audio",
+		.cpu_dai_name = "media-cpu-dai",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.codec_name = "snd-soc-dummy",
+		.platform_name = "sst-mfld-platform",
+		.ignore_suspend = 1,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.ops = &byt_rt5660_aif1_ops,
+	},
+	[MERR_DPCM_DEEP_BUFFER] = {
+		.name = "Deep-Buffer Audio Port",
+		.stream_name = "Deep-Buffer Audio",
+		.cpu_dai_name = "deepbuffer-cpu-dai",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.codec_name = "snd-soc-dummy",
+		.platform_name = "sst-mfld-platform",
+		.ignore_suspend = 1,
+		.nonatomic = true,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.ops = &byt_rt5660_aif1_ops,
+	},
+	[MERR_DPCM_COMPR] = {
+		.name = "Baytrail Compressed Port",
+		.stream_name = "Baytrail Compress",
+		.cpu_dai_name = "compress-cpu-dai",
+		.codec_dai_name = "snd-soc-dummy-dai",
+		.codec_name = "snd-soc-dummy",
+		.platform_name = "sst-mfld-platform",
+	},
+		/* back ends */
+	{
+		.name = "SSP2-Codec",
+		.id = 1,
+		.cpu_dai_name = "ssp2-port", /* overwritten for ssp0 routing */
+		.platform_name = "sst-mfld-platform",
+		.no_pcm = 1,
+		.codec_dai_name = "rt5660-aif1",
+		.codec_name = "i2c-10EC5660:00", /* overwritten with HID */
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+						| SND_SOC_DAIFMT_CBS_CFS,
+		.be_hw_params_fixup = byt_rt5660_codec_fixup,
+		.ignore_suspend = 1,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.init = byt_rt5660_init,
+		.ops = &byt_rt5660_be_ssp2_ops,
+	},
+};
+
+static struct snd_soc_card byt_rt5660_card = {
+	.name = "byt-rt5660",
+	.owner = THIS_MODULE,
+	.dai_link = byt_rt5660_dais,
+	.num_links = ARRAY_SIZE(byt_rt5660_dais),
+	.dapm_widgets = byt_rt5660_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(byt_rt5660_widgets),
+	.dapm_routes = byt_rt5660_audio_map,
+	.num_dapm_routes = ARRAY_SIZE(byt_rt5660_audio_map),
+	.fully_routed = true,
+};
+
+static char byt_rt5660_codec_name[16]; /* i2c-<HID>:00 with HID being 8 chars */
+static char byt_rt5660_cpu_dai_name[10]; /*  = "ssp[0|2]-port" */
+
+static bool is_valleyview(void)
+{
+	static const struct x86_cpu_id cpu_ids[] = {
+		{ X86_VENDOR_INTEL, 6, 55 }, /* Valleyview, Bay Trail */
+		{}
+	};
+
+	if (!x86_match_cpu(cpu_ids))
+		return false;
+	return true;
+}
+
+static int byt_rt5660_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &byt_rt5660_card;
+	struct byt_rt5660_private *priv;
+	struct sst_acpi_mach *mach;
+	const char *i2c_name = NULL;
+	int ret_val = 0;
+	int i, dai_index;
+
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
+	if (!priv)
+		return -ENOMEM;
+
+	card->dev = &pdev->dev;
+	mach = byt_rt5660_card.dev->platform_data;
+	snd_soc_card_set_drvdata(card, priv);
+
+	/* fix index of codec dai */
+	dai_index = MERR_DPCM_COMPR + 1;
+	for (i = 0; i < ARRAY_SIZE(byt_rt5660_dais); i++) {
+		if (!strcmp(byt_rt5660_dais[i].codec_name, "i2c-10EC5660:00")) {
+			dai_index = i;
+			break;
+		}
+	}
+
+	/* fixup codec name based on HID */
+	i2c_name = sst_acpi_find_name_from_hid(mach->id);
+	if (i2c_name != NULL) {
+		snprintf(byt_rt5660_codec_name, sizeof(byt_rt5660_codec_name),
+			"%s%s", "i2c-", i2c_name);
+
+		byt_rt5660_dais[dai_index].codec_name = byt_rt5660_codec_name;
+	}
+
+	dmi_check_system(byt_rt5660_quirk_table);
+	log_quirks(&pdev->dev);
+
+	if ((byt_rt5660_quirk & BYT_RT5660_SSP0_AIF1)) {
+		/* fixup cpu dai name name */
+		snprintf(byt_rt5660_cpu_dai_name,
+			sizeof(byt_rt5660_cpu_dai_name),
+			"%s", "ssp0-port");
+
+		byt_rt5660_dais[dai_index].cpu_dai_name =
+			byt_rt5660_cpu_dai_name;
+	}
+
+	if ((byt_rt5660_quirk & BYT_RT5660_MCLK_EN) && (is_valleyview())) {
+		priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
+		if (IS_ERR(priv->mclk)) {
+			dev_err(&pdev->dev,
+					"Failed to get MCLK from pmc_plt_clk_3 :  % ld\n",
+					PTR_ERR(priv->mclk));
+			return PTR_ERR(priv->mclk);
+		}
+	}
+
+	ret_val = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret_val) {
+		dev_err(&pdev->dev, "devm_snd_soc_register_card failed % d\n",
+				ret_val);
+		return ret_val;
+	}
+	platform_set_drvdata(pdev, card);
+	return ret_val;
+}
+
+static struct platform_driver byt_rt5660_audio = {
+	.probe = byt_rt5660_probe,
+	.driver = {
+		.name = "bytcr_rt5660",
+		.pm = &snd_soc_pm_ops,
+	},
+};
+module_platform_driver(byt_rt5660_audio)
+
+MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
+MODULE_AUTHOR("Shrirang Bagul");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:bytcr_rt5660");
-- 
2.9.3