ASoC: Intel: add bytcr-wm5102 machine driver
diff mbox

Message ID 593313f5.3636c80a.50e05.47e9@mx.google.com
State New
Headers show

Commit Message

pstglia@android-x86.org June 3, 2017, 7:54 p.m. UTC
From: Paulo Sergio Travaglia <pstglia@gmail.com>

based on bytcr-rt5640 machine driver and android kernel source released
by Lenovo [1]

This currently targets Baytrail Lenovo Yoga 2 Tablets (tested with 1051F)

- use arizona specific constants
- set clock to codecs using snd_soc_codec_set_sysclk
- map codec member from snd_soc_dai and set pll
  using snd_soc_codec_set_pll

NOTE: Currently only routes to Headphones are supported
(Speaker seems to need power/activation)

[1] - https://goo.gl/J1TR6n

Signed-off-by: Paulo Sergio Travaglia <pstglia@gmail.com>

Comments

Pierre-Louis Bossart June 4, 2017, 10:27 p.m. UTC | #1
> diff --git a/sound/soc/intel/atom/sst/sst_acpi.c b/sound/soc/intel/atom/sst/sst_acpi.c
> index dd250b8..1669c46 100644
> --- a/sound/soc/intel/atom/sst/sst_acpi.c
> +++ b/sound/soc/intel/atom/sst/sst_acpi.c
> @@ -240,10 +240,17 @@ static int sst_platform_get_resources(struct intel_sst_drv *ctx)
>   }
>   
>   
> -static int is_byt_cr(struct device *dev, bool *bytcr)
> +static int is_byt_cr(struct device *dev, struct sst_acpi_mach *mach, bool *bytcr)
>   {
>   	int status = 0;
>   
> +	/* Lenovo Yoga2 exception - acpi_ipc_irq_index is the 1st index,
> +	   but iosf_mbi_read (bios_status) returns 0 for bits 26:27 */
> +	if (!strcmp(mach->drv_name, "bytcr_wm5102")) {
> +		*bytcr = true;
> +		return status;
> +	}

well no, this isn't the right way to do this. quirks need to be based on 
real hardware information (e.g. DMI) and not a driver name.

The rest looks more of less ok, it's not clear to me if all the quirks 
are needed and make sense.

Patch
diff mbox

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index 67968ef..8a6a25a 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -151,6 +151,19 @@  config SND_SOC_INTEL_BYTCR_RT5640_MACH
           Say Y if you have such a device.
           If unsure select "N".
 
+config SND_SOC_INTEL_BYTCR_WM5102_MACH
+        tristate "ASoC Audio driver for Intel Baytrail and Baytrail-CR with WM5102 codec"
+	depends on X86 && SPI && ACPI
+	select SND_SOC_WM5102
+	select SND_SST_ATOM_HIFI2_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 WM5102 audio codec.
+          Say Y if you have such a device.
+          If unsure select "N".
+
 config SND_SOC_INTEL_BYTCR_RT5651_MACH
         tristate "ASoC Audio driver for Intel Baytrail and Baytrail-CR with RT5651 codec"
 	depends on X86 && I2C && ACPI
diff --git a/sound/soc/intel/atom/sst/sst_acpi.c b/sound/soc/intel/atom/sst/sst_acpi.c
index dd250b8..1669c46 100644
--- a/sound/soc/intel/atom/sst/sst_acpi.c
+++ b/sound/soc/intel/atom/sst/sst_acpi.c
@@ -240,10 +240,17 @@  static int sst_platform_get_resources(struct intel_sst_drv *ctx)
 }
 
 
-static int is_byt_cr(struct device *dev, bool *bytcr)
+static int is_byt_cr(struct device *dev, struct sst_acpi_mach *mach, bool *bytcr)
 {
 	int status = 0;
 
+	/* Lenovo Yoga2 exception - acpi_ipc_irq_index is the 1st index,
+	   but iosf_mbi_read (bios_status) returns 0 for bits 26:27 */
+	if (!strcmp(mach->drv_name, "bytcr_wm5102")) {
+		*bytcr = true;
+		return status;
+	}
+
 	if (IS_ENABLED(CONFIG_IOSF_MBI)) {
 		static const struct x86_cpu_id cpu_ids[] = {
 			{ X86_VENDOR_INTEL, 6, 55 }, /* Valleyview, Bay Trail */
@@ -320,7 +327,7 @@  static int sst_acpi_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return ret;
 
-	ret = is_byt_cr(dev, &bytcr);
+	ret = is_byt_cr(dev, mach, &bytcr);
 	if (!((ret < 0) || (bytcr == false))) {
 		dev_info(dev, "Detected Baytrail-CR platform\n");
 
@@ -492,6 +499,10 @@  static struct sst_acpi_mach sst_acpi_bytcr[] = {
 						&byt_rvp_platform_data },
 	{"INTCCFFD", "bytcr_rt5640", "intel/fw_sst_0f28.bin", "bytcr_rt5640", NULL,
 						&byt_rvp_platform_data },
+	{"WM510204", "bytcr_wm5102", "intel/fw_sst_0f28.bin", "bytcr_wm5102", NULL,
+						&byt_rvp_platform_data },
+	{"WM510205", "bytcr_wm5102", "intel/fw_sst_0f28.bin", "bytcr_wm5102", NULL,
+						&byt_rvp_platform_data },
 	{"10EC5651", "bytcr_rt5651", "intel/fw_sst_0f28.bin", "bytcr_rt5651", NULL,
 						&byt_rvp_platform_data },
 	{"DLGS7212", "bytcht_da7213", "intel/fw_sst_0f28.bin", "bytcht_da7213", NULL,
diff --git a/sound/soc/intel/boards/Makefile b/sound/soc/intel/boards/Makefile
index 56896e0..396e5cf 100644
--- a/sound/soc/intel/boards/Makefile
+++ b/sound/soc/intel/boards/Makefile
@@ -6,6 +6,7 @@  snd-soc-sst-broadwell-objs := broadwell.o
 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-wm5102-objs := bytcr_wm5102.o
 snd-soc-sst-bytcr-rt5651-objs := bytcr_rt5651.o
 snd-soc-sst-cht-bsw-rt5672-objs := cht_bsw_rt5672.o
 snd-soc-sst-cht-bsw-rt5645-objs := cht_bsw_rt5645.o
@@ -24,6 +25,7 @@  obj-$(CONFIG_SND_SOC_INTEL_BXT_RT298_MACH) += snd-soc-sst-bxt-rt298.o
 obj-$(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-$(CONFIG_SND_SOC_INTEL_BYTCR_WM5102_MACH) += snd-soc-sst-bytcr-wm5102.o
 obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5651_MACH) += snd-soc-sst-bytcr-rt5651.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
diff --git a/sound/soc/intel/boards/bytcr_wm5102.c b/sound/soc/intel/boards/bytcr_wm5102.c
new file mode 100644
index 0000000..ade1e67
--- /dev/null
+++ b/sound/soc/intel/boards/bytcr_wm5102.c
@@ -0,0 +1,769 @@ 
+/*
+ *  byt_cr_dpcm_wm5102.c - ASoc Machine driver for Intel Byt CR platform
+ *
+ *  Based on bytcr_rt5640 driver
+ *  Copyright (C) 2014 Intel Corp
+ *  Author: Subhransu S. Prusty <subhransu.s.prusty@intel.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; version 2 of the License.
+ *
+ *  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.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.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/wm5102.h"
+#include "../atom/sst-atom-controls.h"
+#include "../common/sst-acpi.h"
+#include "../common/sst-dsp.h"
+
+enum {
+	BYT_WM5102_DMIC1_MAP,
+	BYT_WM5102_DMIC2_MAP,
+	BYT_WM5102_IN1_MAP,
+	BYT_WM5102_IN3_MAP,
+};
+
+#define BYT_WM5102_MAP(quirk)	((quirk) & 0xff)
+#define BYT_WM5102_DMIC_EN	BIT(16)
+#define BYT_WM5102_MONO_SPEAKER BIT(17)
+#define BYT_WM5102_DIFF_MIC     BIT(18) /* defaut is single-ended */
+#define BYT_WM5102_SSP2_AIF2     BIT(19) /* default is using AIF1  */
+#define BYT_WM5102_SSP0_AIF1     BIT(20)
+#define BYT_WM5102_SSP0_AIF2     BIT(21)
+#define BYT_WM5102_MCLK_EN	BIT(22)
+#define BYT_WM5102_MCLK_25MHZ	BIT(23)
+
+#define WM5102_MAX_SYSCLK_1 49152000 /*max sysclk for 4K family*/
+#define WM5102_MAX_SYSCLK_2 45158400 /*max sysclk for 11.025K family*/
+
+struct byt_wm5102_private {
+	struct clk *mclk;
+};
+
+static unsigned long byt_wm5102_quirk = BYT_WM5102_MCLK_EN;
+
+static void log_quirks(struct device *dev)
+{
+	if (BYT_WM5102_MAP(byt_wm5102_quirk) == BYT_WM5102_DMIC1_MAP)
+		dev_info(dev, "quirk DMIC1_MAP enabled");
+	if (BYT_WM5102_MAP(byt_wm5102_quirk) == BYT_WM5102_DMIC2_MAP)
+		dev_info(dev, "quirk DMIC2_MAP enabled");
+	if (BYT_WM5102_MAP(byt_wm5102_quirk) == BYT_WM5102_IN1_MAP)
+		dev_info(dev, "quirk IN1_MAP enabled");
+	if (BYT_WM5102_MAP(byt_wm5102_quirk) == BYT_WM5102_IN3_MAP)
+		dev_info(dev, "quirk IN3_MAP enabled");
+	if (byt_wm5102_quirk & BYT_WM5102_DMIC_EN)
+		dev_info(dev, "quirk DMIC enabled");
+	if (byt_wm5102_quirk & BYT_WM5102_MONO_SPEAKER)
+		dev_info(dev, "quirk MONO_SPEAKER enabled");
+	if (byt_wm5102_quirk & BYT_WM5102_DIFF_MIC)
+		dev_info(dev, "quirk DIFF_MIC enabled");
+	if (byt_wm5102_quirk & BYT_WM5102_SSP2_AIF2)
+		dev_info(dev, "quirk SSP2_AIF2 enabled");
+	if (byt_wm5102_quirk & BYT_WM5102_SSP0_AIF1)
+		dev_info(dev, "quirk SSP0_AIF1 enabled");
+	if (byt_wm5102_quirk & BYT_WM5102_SSP0_AIF2)
+		dev_info(dev, "quirk SSP0_AIF2 enabled");
+	if (byt_wm5102_quirk & BYT_WM5102_MCLK_EN)
+		dev_info(dev, "quirk MCLK_EN enabled");
+	if (byt_wm5102_quirk & BYT_WM5102_MCLK_25MHZ)
+		dev_info(dev, "quirk MCLK_25MHZ enabled");
+}
+
+
+#define BYT_CODEC_DAI1	"wm5102-aif1"
+#define BYT_CODEC_DAI2	"wm5102-aif2"
+
+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;
+		if (!strncmp(rtd->codec_dai->name, BYT_CODEC_DAI2,
+				strlen(BYT_CODEC_DAI2)))
+			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_wm5102_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_wm5102_quirk & BYT_WM5102_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, ARIZONA_CLK_SYSCLK,
+					     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, ARIZONA_CLK_SYSCLK,
+					     48000 * 512,
+					     SND_SOC_CLOCK_IN);
+		if (!ret) {
+			if ((byt_wm5102_quirk & BYT_WM5102_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 const struct snd_soc_dapm_widget byt_wm5102_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Internal Mic", NULL),
+	SND_SOC_DAPM_SPK("Speaker", NULL),
+	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_wm5102_audio_map[] = {
+	{"Headphone", NULL, "Platform Clock"},
+	{"Headset Mic", NULL, "Platform Clock"},
+	{"Internal Mic", NULL, "Platform Clock"},
+	{"Speaker", NULL, "Platform Clock"},
+
+	{"Headset Mic", NULL, "MICBIAS1"},
+	{"IN1L", NULL, "Headset Mic"},
+	{"Headphone", NULL, "HPOUT1L"},
+	{"Headphone", NULL, "HPOUT1R"},
+};
+
+static const struct snd_soc_dapm_route byt_wm5102_intmic_dmic1_map[] = {
+	{"DMIC1", NULL, "Internal Mic"},
+};
+
+static const struct snd_soc_dapm_route byt_wm5102_intmic_dmic2_map[] = {
+	{"DMIC2", NULL, "Internal Mic"},
+};
+
+static const struct snd_soc_dapm_route byt_wm5102_intmic_in1_map[] = {
+	{"Internal Mic", NULL, "MICBIAS1"},
+	{"IN1P", NULL, "Internal Mic"},
+};
+
+static const struct snd_soc_dapm_route byt_wm5102_intmic_in3_map[] = {
+	{"Internal Mic", NULL, "MICBIAS1"},
+	{"IN3P", NULL, "Internal Mic"},
+};
+
+static const struct snd_soc_dapm_route byt_wm5102_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_wm5102_ssp2_aif2_map[] = {
+	{"ssp2 Tx", NULL, "codec_out0"},
+	{"ssp2 Tx", NULL, "codec_out1"},
+	{"codec_in0", NULL, "ssp2 Rx"},
+	{"codec_in1", NULL, "ssp2 Rx"},
+
+	{"AIF2 Playback", NULL, "ssp2 Tx"},
+	{"ssp2 Rx", NULL, "AIF2 Capture"},
+};
+
+static const struct snd_soc_dapm_route byt_wm5102_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_soc_dapm_route byt_wm5102_ssp0_aif2_map[] = {
+	{"ssp0 Tx", NULL, "modem_out"},
+	{"modem_in", NULL, "ssp0 Rx"},
+
+	{"AIF2 Playback", NULL, "ssp0 Tx"},
+	{"ssp0 Rx", NULL, "AIF2 Capture"},
+};
+
+static const struct snd_soc_dapm_route byt_wm5102_stereo_spk_map[] = {
+	{"Speaker", NULL, "SPKOUTLP"},
+	{"Speaker", NULL, "SPKOUTLN"},
+	{"Speaker", NULL, "SPKOUTRP"},
+	{"Speaker", NULL, "SPKOUTRN"},
+};
+
+static const struct snd_soc_dapm_route byt_wm5102_mono_spk_map[] = {
+	{"Speaker", NULL, "SPKOUTLP"},
+	{"Speaker", NULL, "SPKOUTLN"},
+};
+
+static const struct snd_kcontrol_new byt_wm5102_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+	SOC_DAPM_PIN_SWITCH("Internal Mic"),
+	SOC_DAPM_PIN_SWITCH("Speaker"),
+};
+
+static int byt_wm5102_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;
+	struct snd_soc_codec *wm5102_codec = codec_dai->codec;
+	int ret;
+
+	int sr = params_rate(params);
+	int sr_mult = (params_rate(params) % 4000 == 0) ? (WM5102_MAX_SYSCLK_1/params_rate(params)) : (WM5102_MAX_SYSCLK_2/params_rate(params));
+
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, ARIZONA_CLK_SYSCLK,
+				     params_rate(params) * 512,
+				     SND_SOC_CLOCK_IN);
+
+	if (ret < 0) {
+		dev_err(rtd->dev, "can't set codec clock %d\n", ret);
+		return ret;
+	}
+
+	/*reset FLL1*/
+	snd_soc_codec_set_pll(wm5102_codec, WM5102_FLL1_REFCLK,
+				ARIZONA_FLL_SRC_NONE,
+				0,
+				0);
+
+	snd_soc_codec_set_pll(wm5102_codec, WM5102_FLL1,
+				ARIZONA_FLL_SRC_NONE,
+				0,
+				0);
+
+	ret = snd_soc_codec_set_pll(wm5102_codec, WM5102_FLL1,
+				ARIZONA_CLK_SRC_MCLK1,
+				25000000,
+				sr * sr_mult);
+
+	if (ret < 0) {
+		dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_codec_set_sysclk(wm5102_codec,
+			ARIZONA_CLK_SYSCLK,
+			ARIZONA_CLK_SRC_FLL1,
+			sr * sr_mult,
+			SND_SOC_CLOCK_IN);
+	if (ret != 0) {
+		dev_err(wm5102_codec->dev, "Failed to set AYNCCLK: %d\n", ret);
+		return ret;
+	}
+
+	ret = snd_soc_codec_set_sysclk(wm5102_codec,
+					ARIZONA_CLK_SYSCLK, 0,
+					sr * sr_mult,
+					SND_SOC_CLOCK_OUT);
+        if (ret < 0) {
+                dev_err(rtd->dev, "can't set OPCLK %d\n", ret);
+        }
+
+	return 0;
+}
+
+static int byt_wm5102_quirk_cb(const struct dmi_system_id *id)
+{
+	byt_wm5102_quirk = (unsigned long)id->driver_data;
+	return 1;
+}
+
+static const struct dmi_system_id byt_wm5102_quirk_table[] = {
+	{
+		.callback = byt_wm5102_quirk_cb,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_CHASSIS_VERSION, "1051F"),
+		},
+		.driver_data = (unsigned long *)(BYT_WM5102_MCLK_25MHZ |
+						 BYT_WM5102_MCLK_EN |
+						 BYT_WM5102_SSP0_AIF1),
+
+	},
+	{}
+};
+
+static int byt_wm5102_init(struct snd_soc_pcm_runtime *runtime)
+{
+	int ret;
+	struct snd_soc_codec *codec = runtime->codec;
+	struct snd_soc_card *card = runtime->card;
+	const struct snd_soc_dapm_route *custom_map;
+	struct byt_wm5102_private *priv = snd_soc_card_get_drvdata(card);
+	int num_routes;
+
+	card->dapm.idle_bias_off = true;
+
+	ret = snd_soc_add_card_controls(card, byt_wm5102_controls,
+					ARRAY_SIZE(byt_wm5102_controls));
+	if (ret) {
+		dev_err(card->dev, "unable to add card controls\n");
+		return ret;
+	}
+
+	if (byt_wm5102_quirk & BYT_WM5102_SSP2_AIF2) {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_wm5102_ssp2_aif2_map,
+					ARRAY_SIZE(byt_wm5102_ssp2_aif2_map));
+	} else if (byt_wm5102_quirk & BYT_WM5102_SSP0_AIF1) {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_wm5102_ssp0_aif1_map,
+					ARRAY_SIZE(byt_wm5102_ssp0_aif1_map));
+	} else if (byt_wm5102_quirk & BYT_WM5102_SSP0_AIF2) {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_wm5102_ssp0_aif2_map,
+					ARRAY_SIZE(byt_wm5102_ssp0_aif2_map));
+	} else {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_wm5102_ssp2_aif1_map,
+					ARRAY_SIZE(byt_wm5102_ssp2_aif1_map));
+	}
+	if (ret)
+		return ret;
+
+	if (byt_wm5102_quirk & BYT_WM5102_MONO_SPEAKER) {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_wm5102_mono_spk_map,
+					ARRAY_SIZE(byt_wm5102_mono_spk_map));
+	} else {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_wm5102_stereo_spk_map,
+					ARRAY_SIZE(byt_wm5102_stereo_spk_map));
+	}
+	if (ret)
+		return ret;
+
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker");
+
+	if ((byt_wm5102_quirk & BYT_WM5102_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_wm5102_quirk & BYT_WM5102_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_wm5102_dai_params = {
+	.formats = SNDRV_PCM_FMTBIT_S24_LE,
+	.rate_min = 48000,
+	.rate_max = 48000,
+	.channels_min = 2,
+	.channels_max = 2,
+};
+
+static int byt_wm5102_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_wm5102_quirk & BYT_WM5102_SSP0_AIF1) ||
+		(byt_wm5102_quirk & BYT_WM5102_SSP0_AIF2)) {
+
+		/* 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_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(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_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(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_wm5102_aif1_startup(struct snd_pcm_substream *substream)
+{
+	return snd_pcm_hw_constraint_single(substream->runtime,
+			SNDRV_PCM_HW_PARAM_RATE, 48000);
+}
+
+static const struct snd_soc_ops byt_wm5102_aif1_ops = {
+	.startup = byt_wm5102_aif1_startup,
+};
+
+static const struct snd_soc_ops byt_wm5102_be_ssp2_ops = {
+	.hw_params = byt_wm5102_aif1_hw_params,
+};
+
+static struct snd_soc_dai_link byt_wm5102_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",
+		.nonatomic = true,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.ops = &byt_wm5102_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",
+		.nonatomic = true,
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		.ops = &byt_wm5102_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 = "wm5102-aif1", /* changed w/ quirk */
+		.codec_name = "wm5102-codec", /* overwritten with HID */
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+						| SND_SOC_DAIFMT_CBS_CFS,
+		.be_hw_params_fixup = byt_wm5102_codec_fixup,
+		.ignore_suspend = 1,
+		.nonatomic = true,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		.init = byt_wm5102_init,
+		.ops = &byt_wm5102_be_ssp2_ops,
+	},
+};
+
+/* SoC card */
+static struct snd_soc_card byt_wm5102_card = {
+	.name = "bytcr-wm5102",
+	.owner = THIS_MODULE,
+	.dai_link = byt_wm5102_dais,
+	.num_links = ARRAY_SIZE(byt_wm5102_dais),
+	.dapm_widgets = byt_wm5102_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(byt_wm5102_widgets),
+	.dapm_routes = byt_wm5102_audio_map,
+	.num_dapm_routes = ARRAY_SIZE(byt_wm5102_audio_map),
+	.fully_routed = true,
+};
+
+static char byt_wm5102_codec_name[13]; /* wm5102-codec */
+static char byt_wm5102_codec_aif_name[12]; /*  = "wm5102-aif[1|2]" */
+static char byt_wm5102_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;
+}
+
+struct acpi_chan_package {   /* ACPICA seems to require 64 bit integers */
+	u64 aif_value;       /* 1: AIF1, 2: AIF2 */
+	u64 mclock_value;    /* usually 25MHz (0x17d7940), ignored */
+};
+
+static int snd_byt_wm5102_mc_probe(struct platform_device *pdev)
+{
+	int ret_val = 0;
+	struct sst_acpi_mach *mach;
+	int i;
+	int dai_index;
+	struct byt_wm5102_private *priv;
+	bool is_bytcr = false;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
+	if (!priv)
+		return -ENOMEM;
+
+	/* register the soc card */
+	byt_wm5102_card.dev = &pdev->dev;
+	mach = byt_wm5102_card.dev->platform_data;
+	snd_soc_card_set_drvdata(&byt_wm5102_card, priv);
+
+	/* fix index of codec dai */
+	dai_index = MERR_DPCM_COMPR + 1;
+	for (i = 0; i < ARRAY_SIZE(byt_wm5102_dais); i++) {
+		if (!strcmp(byt_wm5102_dais[i].codec_name, "wm5102-codec")) {
+			dai_index = i;
+			break;
+		}
+	}
+
+	/*
+	 * swap SSP0 if bytcr is detected
+	 * (will be overridden if DMI quirk is detected)
+	 */
+	if (is_valleyview()) {
+		struct sst_platform_info *p_info = mach->pdata;
+		const struct sst_res_info *res_info = p_info->res_info;
+
+		if (res_info->acpi_ipc_irq_index == 0) {
+			is_bytcr = true;
+		}
+	}
+
+	if (is_bytcr) {
+		/*
+		 * Baytrail CR platforms may have CHAN package in BIOS, try
+		 * to find relevant routing quirk based as done on Windows
+		 * platforms. We have to read the information directly from the
+		 * BIOS, at this stage the card is not created and the links
+		 * with the codec driver/pdata are non-existent
+		 */
+
+		struct acpi_chan_package chan_package;
+
+		/* format specified: 2 64-bit integers */
+		struct acpi_buffer format = {sizeof("NN"), "NN"};
+		struct acpi_buffer state = {0, NULL};
+		struct sst_acpi_package_context pkg_ctx;
+		bool pkg_found = false;
+
+		state.length = sizeof(chan_package);
+		state.pointer = &chan_package;
+
+		pkg_ctx.name = "CHAN";
+		pkg_ctx.length = 2;
+		pkg_ctx.format = &format;
+		pkg_ctx.state = &state;
+		pkg_ctx.data_valid = false;
+
+		pkg_found = sst_acpi_find_package_from_hid(mach->id, &pkg_ctx);
+		if (pkg_found) {
+			if (chan_package.aif_value == 1) {
+				dev_info(&pdev->dev, "BIOS Routing: AIF1 connected\n");
+				byt_wm5102_quirk |= BYT_WM5102_SSP0_AIF1;
+			} else  if (chan_package.aif_value == 2) {
+				dev_info(&pdev->dev, "BIOS Routing: AIF2 connected\n");
+				byt_wm5102_quirk |= BYT_WM5102_SSP0_AIF2;
+			} else {
+				dev_info(&pdev->dev, "BIOS Routing isn't valid, ignored\n");
+				pkg_found = false;
+			}
+		}
+
+		if (!pkg_found) {
+			/* no BIOS indications, assume SSP0-AIF1 connection */
+			byt_wm5102_quirk |= BYT_WM5102_SSP0_AIF1;
+		}
+
+		/* change defaults for Baytrail-CR capture */
+		byt_wm5102_quirk |= BYT_WM5102_IN1_MAP;
+		byt_wm5102_quirk |= BYT_WM5102_DIFF_MIC;
+	} else {
+		byt_wm5102_quirk |= (BYT_WM5102_DMIC1_MAP |
+				BYT_WM5102_DMIC_EN);
+	}
+
+	/* check quirks before creating card */
+	dmi_check_system(byt_wm5102_quirk_table);
+	log_quirks(&pdev->dev);
+
+	if ((byt_wm5102_quirk & BYT_WM5102_SSP2_AIF2) ||
+	    (byt_wm5102_quirk & BYT_WM5102_SSP0_AIF2)) {
+
+		/* fixup codec aif name */
+		snprintf(byt_wm5102_codec_aif_name,
+			sizeof(byt_wm5102_codec_aif_name),
+			"%s", "wm5102-aif2");
+
+		byt_wm5102_dais[dai_index].codec_dai_name =
+			byt_wm5102_codec_aif_name;
+	}
+
+	if ((byt_wm5102_quirk & BYT_WM5102_SSP0_AIF1) ||
+	    (byt_wm5102_quirk & BYT_WM5102_SSP0_AIF2)) {
+
+		/* fixup cpu dai name name */
+		snprintf(byt_wm5102_cpu_dai_name,
+			sizeof(byt_wm5102_cpu_dai_name),
+			"%s", "ssp0-port");
+
+		byt_wm5102_dais[dai_index].cpu_dai_name =
+			byt_wm5102_cpu_dai_name;
+	}
+
+	if ((byt_wm5102_quirk & BYT_WM5102_MCLK_EN) && (is_valleyview())) {
+		priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
+		if (IS_ERR(priv->mclk)) {
+			ret_val = PTR_ERR(priv->mclk);
+
+			dev_err(&pdev->dev,
+				"Failed to get MCLK from pmc_plt_clk_3: %d\n",
+				ret_val);
+
+			/*
+			 * Fall back to bit clock usage for -ENOENT (clock not
+			 * available likely due to missing dependencies), bail
+			 * for all other errors, including -EPROBE_DEFER
+			 */
+			if (ret_val != -ENOENT)
+				return ret_val;
+			byt_wm5102_quirk &= ~BYT_WM5102_MCLK_EN;
+		}
+	}
+
+	ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_wm5102_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, &byt_wm5102_card);
+	return ret_val;
+}
+
+static struct platform_driver snd_byt_wm5102_mc_driver = {
+	.driver = {
+		.name = "bytcr_wm5102",
+	},
+	.probe = snd_byt_wm5102_mc_probe,
+};
+
+module_platform_driver(snd_byt_wm5102_mc_driver);
+
+MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
+MODULE_AUTHOR("Subhransu S. Prusty <subhransu.s.prusty@intel.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:bytcr_wm5102");