Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 735 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8737.c b/sound/soc/codecs/wm8737.c
new file mode 100644
index 000000000..7a3f9fbe8
--- /dev/null
+++ b/sound/soc/codecs/wm8737.c
@@ -0,0 +1,735 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * wm8737.c  --  WM8737 ALSA SoC Audio driver
+ *
+ * Copyright 2010 Wolfson Microelectronics plc
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <linux/of_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#include "wm8737.h"
+
+#define WM8737_NUM_SUPPLIES 4
+static const char *wm8737_supply_names[WM8737_NUM_SUPPLIES] = {
+	"DCVDD",
+	"DBVDD",
+	"AVDD",
+	"MVDD",
+};
+
+/* codec private data */
+struct wm8737_priv {
+	struct regmap *regmap;
+	struct regulator_bulk_data supplies[WM8737_NUM_SUPPLIES];
+	unsigned int mclk;
+};
+
+static const struct reg_default wm8737_reg_defaults[] = {
+	{  0, 0x00C3 },     /* R0  - Left PGA volume */
+	{  1, 0x00C3 },     /* R1  - Right PGA volume */
+	{  2, 0x0007 },     /* R2  - AUDIO path L */
+	{  3, 0x0007 },     /* R3  - AUDIO path R */
+	{  4, 0x0000 },     /* R4  - 3D Enhance */
+	{  5, 0x0000 },     /* R5  - ADC Control */
+	{  6, 0x0000 },     /* R6  - Power Management */
+	{  7, 0x000A },     /* R7  - Audio Format */
+	{  8, 0x0000 },     /* R8  - Clocking */
+	{  9, 0x000F },     /* R9  - MIC Preamp Control */
+	{ 10, 0x0003 },     /* R10 - Misc Bias Control */
+	{ 11, 0x0000 },     /* R11 - Noise Gate */
+	{ 12, 0x007C },     /* R12 - ALC1 */
+	{ 13, 0x0000 },     /* R13 - ALC2 */
+	{ 14, 0x0032 },     /* R14 - ALC3 */
+};
+
+static bool wm8737_volatile(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case WM8737_RESET:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static int wm8737_reset(struct snd_soc_component *component)
+{
+	return snd_soc_component_write(component, WM8737_RESET, 0);
+}
+
+static const DECLARE_TLV_DB_RANGE(micboost_tlv,
+	0, 0, TLV_DB_SCALE_ITEM(1300, 0, 0),
+	1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0),
+	2, 2, TLV_DB_SCALE_ITEM(2800, 0, 0),
+	3, 3, TLV_DB_SCALE_ITEM(3300, 0, 0)
+);
+static const DECLARE_TLV_DB_SCALE(pga_tlv, -9750, 50, 1);
+static const DECLARE_TLV_DB_SCALE(adc_tlv, -600, 600, 0);
+static const DECLARE_TLV_DB_SCALE(ng_tlv, -7800, 600, 0);
+static const DECLARE_TLV_DB_SCALE(alc_max_tlv, -1200, 600, 0);
+static const DECLARE_TLV_DB_SCALE(alc_target_tlv, -1800, 100, 0);
+
+static const char *micbias_enum_text[] = {
+	"25%",
+	"50%",
+	"75%",
+	"100%",
+};
+
+static SOC_ENUM_SINGLE_DECL(micbias_enum,
+			    WM8737_MIC_PREAMP_CONTROL, 0, micbias_enum_text);
+
+static const char *low_cutoff_text[] = {
+	"Low", "High"
+};
+
+static SOC_ENUM_SINGLE_DECL(low_3d,
+			    WM8737_3D_ENHANCE, 6, low_cutoff_text);
+
+static const char *high_cutoff_text[] = {
+	"High", "Low"
+};
+
+static SOC_ENUM_SINGLE_DECL(high_3d,
+			    WM8737_3D_ENHANCE, 5, high_cutoff_text);
+
+static const char *alc_fn_text[] = {
+	"Disabled", "Right", "Left", "Stereo"
+};
+
+static SOC_ENUM_SINGLE_DECL(alc_fn,
+			    WM8737_ALC1, 7, alc_fn_text);
+
+static const char *alc_hold_text[] = {
+	"0", "2.67ms", "5.33ms", "10.66ms", "21.32ms", "42.64ms", "85.28ms",
+	"170.56ms", "341.12ms", "682.24ms", "1.364s", "2.728s", "5.458s",
+	"10.916s", "21.832s", "43.691s"
+};
+
+static SOC_ENUM_SINGLE_DECL(alc_hold,
+			    WM8737_ALC2, 0, alc_hold_text);
+
+static const char *alc_atk_text[] = {
+	"8.4ms", "16.8ms", "33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms",
+	"1.075s", "2.15s", "4.3s", "8.6s"
+};
+
+static SOC_ENUM_SINGLE_DECL(alc_atk,
+			    WM8737_ALC3, 0, alc_atk_text);
+
+static const char *alc_dcy_text[] = {
+	"33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms", "1.075s", "2.15s",
+	"4.3s", "8.6s", "17.2s", "34.41s"
+};
+
+static SOC_ENUM_SINGLE_DECL(alc_dcy,
+			    WM8737_ALC3, 4, alc_dcy_text);
+
+static const struct snd_kcontrol_new wm8737_snd_controls[] = {
+SOC_DOUBLE_R_TLV("Mic Boost Volume", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
+		 6, 3, 0, micboost_tlv),
+SOC_DOUBLE_R("Mic Boost Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
+	     4, 1, 0),
+SOC_DOUBLE("Mic ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
+	   3, 1, 0),
+
+SOC_DOUBLE_R_TLV("Capture Volume", WM8737_LEFT_PGA_VOLUME,
+		 WM8737_RIGHT_PGA_VOLUME, 0, 255, 0, pga_tlv),
+SOC_DOUBLE("Capture ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
+	   2, 1, 0),
+
+SOC_DOUBLE("INPUT1 DC Bias Switch", WM8737_MISC_BIAS_CONTROL, 0, 1, 1, 0),
+
+SOC_ENUM("Mic PGA Bias", micbias_enum),
+SOC_SINGLE("ADC Low Power Switch", WM8737_ADC_CONTROL, 2, 1, 0),
+SOC_SINGLE("High Pass Filter Switch", WM8737_ADC_CONTROL, 0, 1, 1),
+SOC_DOUBLE("Polarity Invert Switch", WM8737_ADC_CONTROL, 5, 6, 1, 0),
+
+SOC_SINGLE("3D Switch", WM8737_3D_ENHANCE, 0, 1, 0),
+SOC_SINGLE("3D Depth", WM8737_3D_ENHANCE, 1, 15, 0),
+SOC_ENUM("3D Low Cut-off", low_3d),
+SOC_ENUM("3D High Cut-off", high_3d),
+SOC_SINGLE_TLV("3D ADC Volume", WM8737_3D_ENHANCE, 7, 1, 1, adc_tlv),
+
+SOC_SINGLE("Noise Gate Switch", WM8737_NOISE_GATE, 0, 1, 0),
+SOC_SINGLE_TLV("Noise Gate Threshold Volume", WM8737_NOISE_GATE, 2, 7, 0,
+	       ng_tlv),
+
+SOC_ENUM("ALC", alc_fn),
+SOC_SINGLE_TLV("ALC Max Gain Volume", WM8737_ALC1, 4, 7, 0, alc_max_tlv),
+SOC_SINGLE_TLV("ALC Target Volume", WM8737_ALC1, 0, 15, 0, alc_target_tlv),
+SOC_ENUM("ALC Hold Time", alc_hold),
+SOC_SINGLE("ALC ZC Switch", WM8737_ALC2, 4, 1, 0),
+SOC_ENUM("ALC Attack Time", alc_atk),
+SOC_ENUM("ALC Decay Time", alc_dcy),
+};
+
+static const char *linsel_text[] = {
+	"LINPUT1", "LINPUT2", "LINPUT3", "LINPUT1 DC",
+};
+
+static SOC_ENUM_SINGLE_DECL(linsel_enum,
+			    WM8737_AUDIO_PATH_L, 7, linsel_text);
+
+static const struct snd_kcontrol_new linsel_mux =
+	SOC_DAPM_ENUM("LINSEL", linsel_enum);
+
+
+static const char *rinsel_text[] = {
+	"RINPUT1", "RINPUT2", "RINPUT3", "RINPUT1 DC",
+};
+
+static SOC_ENUM_SINGLE_DECL(rinsel_enum,
+			    WM8737_AUDIO_PATH_R, 7, rinsel_text);
+
+static const struct snd_kcontrol_new rinsel_mux =
+	SOC_DAPM_ENUM("RINSEL", rinsel_enum);
+
+static const char *bypass_text[] = {
+	"Direct", "Preamp"
+};
+
+static SOC_ENUM_SINGLE_DECL(lbypass_enum,
+			    WM8737_MIC_PREAMP_CONTROL, 2, bypass_text);
+
+static const struct snd_kcontrol_new lbypass_mux =
+	SOC_DAPM_ENUM("Left Bypass", lbypass_enum);
+
+
+static SOC_ENUM_SINGLE_DECL(rbypass_enum,
+			    WM8737_MIC_PREAMP_CONTROL, 3, bypass_text);
+
+static const struct snd_kcontrol_new rbypass_mux =
+	SOC_DAPM_ENUM("Left Bypass", rbypass_enum);
+
+static const struct snd_soc_dapm_widget wm8737_dapm_widgets[] = {
+SND_SOC_DAPM_INPUT("LINPUT1"),
+SND_SOC_DAPM_INPUT("LINPUT2"),
+SND_SOC_DAPM_INPUT("LINPUT3"),
+SND_SOC_DAPM_INPUT("RINPUT1"),
+SND_SOC_DAPM_INPUT("RINPUT2"),
+SND_SOC_DAPM_INPUT("RINPUT3"),
+SND_SOC_DAPM_INPUT("LACIN"),
+SND_SOC_DAPM_INPUT("RACIN"),
+
+SND_SOC_DAPM_MUX("LINSEL", SND_SOC_NOPM, 0, 0, &linsel_mux),
+SND_SOC_DAPM_MUX("RINSEL", SND_SOC_NOPM, 0, 0, &rinsel_mux),
+
+SND_SOC_DAPM_MUX("Left Preamp Mux", SND_SOC_NOPM, 0, 0, &lbypass_mux),
+SND_SOC_DAPM_MUX("Right Preamp Mux", SND_SOC_NOPM, 0, 0, &rbypass_mux),
+
+SND_SOC_DAPM_PGA("PGAL", WM8737_POWER_MANAGEMENT, 5, 0, NULL, 0),
+SND_SOC_DAPM_PGA("PGAR", WM8737_POWER_MANAGEMENT, 4, 0, NULL, 0),
+
+SND_SOC_DAPM_DAC("ADCL", NULL, WM8737_POWER_MANAGEMENT, 3, 0),
+SND_SOC_DAPM_DAC("ADCR", NULL, WM8737_POWER_MANAGEMENT, 2, 0),
+
+SND_SOC_DAPM_AIF_OUT("AIF", "Capture", 0, WM8737_POWER_MANAGEMENT, 6, 0),
+};
+
+static const struct snd_soc_dapm_route intercon[] = {
+	{ "LINSEL", "LINPUT1", "LINPUT1" },
+	{ "LINSEL", "LINPUT2", "LINPUT2" },
+	{ "LINSEL", "LINPUT3", "LINPUT3" },
+	{ "LINSEL", "LINPUT1 DC", "LINPUT1" },
+
+	{ "RINSEL", "RINPUT1", "RINPUT1" },
+	{ "RINSEL", "RINPUT2", "RINPUT2" },
+	{ "RINSEL", "RINPUT3", "RINPUT3" },
+	{ "RINSEL", "RINPUT1 DC", "RINPUT1" },
+
+	{ "Left Preamp Mux", "Preamp", "LINSEL" },
+	{ "Left Preamp Mux", "Direct", "LACIN" },
+
+	{ "Right Preamp Mux", "Preamp", "RINSEL" },
+	{ "Right Preamp Mux", "Direct", "RACIN" },
+
+	{ "PGAL", NULL, "Left Preamp Mux" },
+	{ "PGAR", NULL, "Right Preamp Mux" },
+
+	{ "ADCL", NULL, "PGAL" },
+	{ "ADCR", NULL, "PGAR" },
+
+	{ "AIF", NULL, "ADCL" },
+	{ "AIF", NULL, "ADCR" },
+};
+
+/* codec mclk clock divider coefficients */
+static const struct {
+	u32 mclk;
+	u32 rate;
+	u8 usb;
+	u8 sr;
+} coeff_div[] = {
+	{ 12288000,  8000, 0,  0x4 },
+	{ 12288000, 12000, 0,  0x8 },
+	{ 12288000, 16000, 0,  0xa },
+	{ 12288000, 24000, 0, 0x1c },
+	{ 12288000, 32000, 0,  0xc },
+	{ 12288000, 48000, 0,    0 },
+	{ 12288000, 96000, 0,  0xe },
+
+	{ 11289600,  8000, 0, 0x14 },
+	{ 11289600, 11025, 0, 0x18 },
+	{ 11289600, 22050, 0, 0x1a },
+	{ 11289600, 44100, 0, 0x10 },
+	{ 11289600, 88200, 0, 0x1e },
+
+	{ 18432000,  8000, 0,  0x5 },
+	{ 18432000, 12000, 0,  0x9 },
+	{ 18432000, 16000, 0,  0xb },
+	{ 18432000, 24000, 0, 0x1b },
+	{ 18432000, 32000, 0,  0xd },
+	{ 18432000, 48000, 0,  0x1 },
+	{ 18432000, 96000, 0, 0x1f },
+
+	{ 16934400,  8000, 0, 0x15 },
+	{ 16934400, 11025, 0, 0x19 },
+	{ 16934400, 22050, 0, 0x1b },
+	{ 16934400, 44100, 0, 0x11 },
+	{ 16934400, 88200, 0, 0x1f },
+
+	{ 12000000,  8000, 1,  0x4 },
+	{ 12000000, 11025, 1, 0x19 },
+	{ 12000000, 12000, 1,  0x8 },
+	{ 12000000, 16000, 1,  0xa },
+	{ 12000000, 22050, 1, 0x1b },
+	{ 12000000, 24000, 1, 0x1c },
+	{ 12000000, 32000, 1,  0xc },
+	{ 12000000, 44100, 1, 0x11 },
+	{ 12000000, 48000, 1,  0x0 },
+	{ 12000000, 88200, 1, 0x1f },
+	{ 12000000, 96000, 1,  0xe },
+};
+
+static int wm8737_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *params,
+			    struct snd_soc_dai *dai)
+{
+	struct snd_soc_component *component = dai->component;
+	struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component);
+	int i;
+	u16 clocking = 0;
+	u16 af = 0;
+
+	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
+		if (coeff_div[i].rate != params_rate(params))
+			continue;
+
+		if (coeff_div[i].mclk == wm8737->mclk)
+			break;
+
+		if (coeff_div[i].mclk == wm8737->mclk * 2) {
+			clocking |= WM8737_CLKDIV2;
+			break;
+		}
+	}
+
+	if (i == ARRAY_SIZE(coeff_div)) {
+		dev_err(component->dev, "%dHz MCLK can't support %dHz\n",
+			wm8737->mclk, params_rate(params));
+		return -EINVAL;
+	}
+
+	clocking |= coeff_div[i].usb | (coeff_div[i].sr << WM8737_SR_SHIFT);
+
+	switch (params_width(params)) {
+	case 16:
+		break;
+	case 20:
+		af |= 0x8;
+		break;
+	case 24:
+		af |= 0x10;
+		break;
+	case 32:
+		af |= 0x18;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(component, WM8737_AUDIO_FORMAT, WM8737_WL_MASK, af);
+	snd_soc_component_update_bits(component, WM8737_CLOCKING,
+			    WM8737_USB_MODE | WM8737_CLKDIV2 | WM8737_SR_MASK,
+			    clocking);
+
+	return 0;
+}
+
+static int wm8737_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+				 int clk_id, unsigned int freq, int dir)
+{
+	struct snd_soc_component *component = codec_dai->component;
+	struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component);
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
+		if (freq == coeff_div[i].mclk ||
+		    freq == coeff_div[i].mclk * 2) {
+			wm8737->mclk = freq;
+			return 0;
+		}
+	}
+
+	dev_err(component->dev, "MCLK rate %dHz not supported\n", freq);
+
+	return -EINVAL;
+}
+
+
+static int wm8737_set_dai_fmt(struct snd_soc_dai *codec_dai,
+		unsigned int fmt)
+{
+	struct snd_soc_component *component = codec_dai->component;
+	u16 af = 0;
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		af |= WM8737_MS;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		af |= 0x2;
+		break;
+	case SND_SOC_DAIFMT_RIGHT_J:
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		af |= 0x1;
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		af |= 0x3;
+		break;
+	case SND_SOC_DAIFMT_DSP_B:
+		af |= 0x13;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF:
+		break;
+	case SND_SOC_DAIFMT_NB_IF:
+		af |= WM8737_LRP;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	snd_soc_component_update_bits(component, WM8737_AUDIO_FORMAT,
+			    WM8737_FORMAT_MASK | WM8737_LRP | WM8737_MS, af);
+
+	return 0;
+}
+
+static int wm8737_set_bias_level(struct snd_soc_component *component,
+				 enum snd_soc_bias_level level)
+{
+	struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component);
+	int ret;
+
+	switch (level) {
+	case SND_SOC_BIAS_ON:
+		break;
+
+	case SND_SOC_BIAS_PREPARE:
+		/* VMID at 2*75k */
+		snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL,
+				    WM8737_VMIDSEL_MASK, 0);
+		break;
+
+	case SND_SOC_BIAS_STANDBY:
+		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
+			ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies),
+						    wm8737->supplies);
+			if (ret != 0) {
+				dev_err(component->dev,
+					"Failed to enable supplies: %d\n",
+					ret);
+				return ret;
+			}
+
+			regcache_sync(wm8737->regmap);
+
+			/* Fast VMID ramp at 2*2.5k */
+			snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL,
+					    WM8737_VMIDSEL_MASK,
+					    2 << WM8737_VMIDSEL_SHIFT);
+
+			/* Bring VMID up */
+			snd_soc_component_update_bits(component, WM8737_POWER_MANAGEMENT,
+					    WM8737_VMID_MASK |
+					    WM8737_VREF_MASK,
+					    WM8737_VMID_MASK |
+					    WM8737_VREF_MASK);
+
+			msleep(500);
+		}
+
+		/* VMID at 2*300k */
+		snd_soc_component_update_bits(component, WM8737_MISC_BIAS_CONTROL,
+				    WM8737_VMIDSEL_MASK,
+				    1 << WM8737_VMIDSEL_SHIFT);
+
+		break;
+
+	case SND_SOC_BIAS_OFF:
+		snd_soc_component_update_bits(component, WM8737_POWER_MANAGEMENT,
+				    WM8737_VMID_MASK | WM8737_VREF_MASK, 0);
+
+		regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies),
+				       wm8737->supplies);
+		break;
+	}
+
+	return 0;
+}
+
+#define WM8737_RATES SNDRV_PCM_RATE_8000_96000
+
+#define WM8737_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
+			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+static const struct snd_soc_dai_ops wm8737_dai_ops = {
+	.hw_params	= wm8737_hw_params,
+	.set_sysclk	= wm8737_set_dai_sysclk,
+	.set_fmt	= wm8737_set_dai_fmt,
+};
+
+static struct snd_soc_dai_driver wm8737_dai = {
+	.name = "wm8737",
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 2,  /* Mono modes not yet supported */
+		.channels_max = 2,
+		.rates = WM8737_RATES,
+		.formats = WM8737_FORMATS,
+	},
+	.ops = &wm8737_dai_ops,
+};
+
+static int wm8737_probe(struct snd_soc_component *component)
+{
+	struct wm8737_priv *wm8737 = snd_soc_component_get_drvdata(component);
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies),
+				    wm8737->supplies);
+	if (ret != 0) {
+		dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
+		goto err_get;
+	}
+
+	ret = wm8737_reset(component);
+	if (ret < 0) {
+		dev_err(component->dev, "Failed to issue reset\n");
+		goto err_enable;
+	}
+
+	snd_soc_component_update_bits(component, WM8737_LEFT_PGA_VOLUME, WM8737_LVU,
+			    WM8737_LVU);
+	snd_soc_component_update_bits(component, WM8737_RIGHT_PGA_VOLUME, WM8737_RVU,
+			    WM8737_RVU);
+
+	snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY);
+
+	/* Bias level configuration will have done an extra enable */
+	regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies);
+
+	return 0;
+
+err_enable:
+	regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies);
+err_get:
+	return ret;
+}
+
+static const struct snd_soc_component_driver soc_component_dev_wm8737 = {
+	.probe			= wm8737_probe,
+	.set_bias_level		= wm8737_set_bias_level,
+	.controls		= wm8737_snd_controls,
+	.num_controls		= ARRAY_SIZE(wm8737_snd_controls),
+	.dapm_widgets		= wm8737_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(wm8737_dapm_widgets),
+	.dapm_routes		= intercon,
+	.num_dapm_routes	= ARRAY_SIZE(intercon),
+	.suspend_bias_off	= 1,
+	.idle_bias_on		= 1,
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+	.non_legacy_dai_naming	= 1,
+};
+
+static const struct of_device_id wm8737_of_match[] = {
+	{ .compatible = "wlf,wm8737", },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, wm8737_of_match);
+
+static const struct regmap_config wm8737_regmap = {
+	.reg_bits = 7,
+	.val_bits = 9,
+	.max_register = WM8737_MAX_REGISTER,
+
+	.reg_defaults = wm8737_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(wm8737_reg_defaults),
+	.cache_type = REGCACHE_RBTREE,
+
+	.volatile_reg = wm8737_volatile,
+};
+
+#if IS_ENABLED(CONFIG_I2C)
+static int wm8737_i2c_probe(struct i2c_client *i2c,
+			    const struct i2c_device_id *id)
+{
+	struct wm8737_priv *wm8737;
+	int ret, i;
+
+	wm8737 = devm_kzalloc(&i2c->dev, sizeof(struct wm8737_priv),
+			      GFP_KERNEL);
+	if (wm8737 == NULL)
+		return -ENOMEM;
+
+	for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++)
+		wm8737->supplies[i].supply = wm8737_supply_names[i];
+
+	ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8737->supplies),
+				      wm8737->supplies);
+	if (ret != 0) {
+		dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
+		return ret;
+	}
+
+	wm8737->regmap = devm_regmap_init_i2c(i2c, &wm8737_regmap);
+	if (IS_ERR(wm8737->regmap))
+		return PTR_ERR(wm8737->regmap);
+
+	i2c_set_clientdata(i2c, wm8737);
+
+	ret = devm_snd_soc_register_component(&i2c->dev,
+				&soc_component_dev_wm8737, &wm8737_dai, 1);
+
+	return ret;
+
+}
+
+static const struct i2c_device_id wm8737_i2c_id[] = {
+	{ "wm8737", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, wm8737_i2c_id);
+
+static struct i2c_driver wm8737_i2c_driver = {
+	.driver = {
+		.name = "wm8737",
+		.of_match_table = wm8737_of_match,
+	},
+	.probe =    wm8737_i2c_probe,
+	.id_table = wm8737_i2c_id,
+};
+#endif
+
+#if defined(CONFIG_SPI_MASTER)
+static int wm8737_spi_probe(struct spi_device *spi)
+{
+	struct wm8737_priv *wm8737;
+	int ret, i;
+
+	wm8737 = devm_kzalloc(&spi->dev, sizeof(struct wm8737_priv),
+			      GFP_KERNEL);
+	if (wm8737 == NULL)
+		return -ENOMEM;
+
+	for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++)
+		wm8737->supplies[i].supply = wm8737_supply_names[i];
+
+	ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8737->supplies),
+				      wm8737->supplies);
+	if (ret != 0) {
+		dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
+		return ret;
+	}
+
+	wm8737->regmap = devm_regmap_init_spi(spi, &wm8737_regmap);
+	if (IS_ERR(wm8737->regmap))
+		return PTR_ERR(wm8737->regmap);
+
+	spi_set_drvdata(spi, wm8737);
+
+	ret = devm_snd_soc_register_component(&spi->dev,
+				&soc_component_dev_wm8737, &wm8737_dai, 1);
+
+	return ret;
+}
+
+static struct spi_driver wm8737_spi_driver = {
+	.driver = {
+		.name	= "wm8737",
+		.of_match_table = wm8737_of_match,
+	},
+	.probe		= wm8737_spi_probe,
+};
+#endif /* CONFIG_SPI_MASTER */
+
+static int __init wm8737_modinit(void)
+{
+	int ret;
+#if IS_ENABLED(CONFIG_I2C)
+	ret = i2c_add_driver(&wm8737_i2c_driver);
+	if (ret != 0) {
+		printk(KERN_ERR "Failed to register WM8737 I2C driver: %d\n",
+		       ret);
+	}
+#endif
+#if defined(CONFIG_SPI_MASTER)
+	ret = spi_register_driver(&wm8737_spi_driver);
+	if (ret != 0) {
+		printk(KERN_ERR "Failed to register WM8737 SPI driver: %d\n",
+		       ret);
+	}
+#endif
+	return 0;
+}
+module_init(wm8737_modinit);
+
+static void __exit wm8737_exit(void)
+{
+#if defined(CONFIG_SPI_MASTER)
+	spi_unregister_driver(&wm8737_spi_driver);
+#endif
+#if IS_ENABLED(CONFIG_I2C)
+	i2c_del_driver(&wm8737_i2c_driver);
+#endif
+}
+module_exit(wm8737_exit);
+
+MODULE_DESCRIPTION("ASoC WM8737 driver");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");