sound/soc/qcom/apq8016_sbc.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2015 The Linux Foundation. All rights reserved.
  */

 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/clk.h>
 #include <linux/platform_device.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/jack.h>
 #include <sound/soc.h>
 #include <uapi/linux/input-event-codes.h>
 #include <dt-bindings/sound/apq8016-lpass.h>
 #include "common.h"
 #include "qdsp6/q6afe.h"

 #define MI2S_COUNT  (MI2S_QUATERNARY + 1)

 struct apq8016_sbc_data {
 	struct snd_soc_card card;
 	void __iomem *mic_iomux;
 	void __iomem *spkr_iomux;
 	struct snd_soc_jack jack;
 	bool jack_setup;
 	int mi2s_clk_count[MI2S_COUNT];
 };

 #define MIC_CTRL_TER_WS_SLAVE_SEL	BIT(21)
 #define MIC_CTRL_QUA_WS_SLAVE_SEL_10	BIT(17)
 #define MIC_CTRL_TLMM_SCLK_EN		BIT(1)
 #define	SPKR_CTL_PRI_WS_SLAVE_SEL_11	(BIT(17) | BIT(16))
 #define SPKR_CTL_TLMM_MCLK_EN		BIT(1)
 #define SPKR_CTL_TLMM_SCLK_EN		BIT(2)
 #define SPKR_CTL_TLMM_DATA1_EN		BIT(3)
 #define SPKR_CTL_TLMM_WS_OUT_SEL_MASK	GENMASK(7, 6)
 #define SPKR_CTL_TLMM_WS_OUT_SEL_SEC	BIT(6)
 #define SPKR_CTL_TLMM_WS_EN_SEL_MASK	GENMASK(19, 18)
 #define SPKR_CTL_TLMM_WS_EN_SEL_SEC	BIT(18)
 #define DEFAULT_MCLK_RATE		9600000
 #define MI2S_BCLK_RATE			1536000

 static struct snd_soc_jack_pin apq8016_sbc_jack_pins[] = {
 	{
 		.pin = "Mic Jack",
 		.mask = SND_JACK_MICROPHONE,
 	},
 	{
 		.pin = "Headphone Jack",
 		.mask = SND_JACK_HEADPHONE,
 	},
 };

 static int apq8016_dai_init(struct snd_soc_pcm_runtime *rtd, int mi2s)
 {
 	struct snd_soc_dai *codec_dai;
 	struct snd_soc_component *component;
 	struct snd_soc_card *card = rtd->card;
 	struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
 	int i, rval;
 	u32 value;

 	switch (mi2s) {
 	case MI2S_PRIMARY:
 		writel(readl(pdata->spkr_iomux) | SPKR_CTL_PRI_WS_SLAVE_SEL_11,
 			pdata->spkr_iomux);
 		break;

 	case MI2S_QUATERNARY:
 		/* Configure the Quat MI2S to TLMM */
 		writel(readl(pdata->mic_iomux) | MIC_CTRL_QUA_WS_SLAVE_SEL_10 |
 			MIC_CTRL_TLMM_SCLK_EN,
 			pdata->mic_iomux);
 		break;
 	case MI2S_SECONDARY:
 		/* Clear TLMM_WS_OUT_SEL and TLMM_WS_EN_SEL fields */
 		value = readl(pdata->spkr_iomux) &
 			~(SPKR_CTL_TLMM_WS_OUT_SEL_MASK | SPKR_CTL_TLMM_WS_EN_SEL_MASK);
 		/* Configure the Sec MI2S to TLMM */
 		writel(value | SPKR_CTL_TLMM_MCLK_EN | SPKR_CTL_TLMM_SCLK_EN |
 			SPKR_CTL_TLMM_DATA1_EN | SPKR_CTL_TLMM_WS_OUT_SEL_SEC |
 			SPKR_CTL_TLMM_WS_EN_SEL_SEC, pdata->spkr_iomux);
 		break;
 	case MI2S_TERTIARY:
 		writel(readl(pdata->mic_iomux) | MIC_CTRL_TER_WS_SLAVE_SEL |
 			MIC_CTRL_TLMM_SCLK_EN,
 			pdata->mic_iomux);

 		break;

 	default:
 		dev_err(card->dev, "unsupported cpu dai configuration\n");
 		return -EINVAL;

 	}

 	if (!pdata->jack_setup) {
 		struct snd_jack *jack;

 		rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
 						  SND_JACK_HEADSET |
 						  SND_JACK_HEADPHONE |
 						  SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 						  SND_JACK_BTN_2 | SND_JACK_BTN_3 |
 						  SND_JACK_BTN_4,
 						  &pdata->jack,
 						  apq8016_sbc_jack_pins,
 						  ARRAY_SIZE(apq8016_sbc_jack_pins));

 		if (rval < 0) {
 			dev_err(card->dev, "Unable to add Headphone Jack\n");
 			return rval;
 		}

 		jack = pdata->jack.jack;

 		snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
 		snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
 		snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
 		snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
 		pdata->jack_setup = true;
 	}

 	for_each_rtd_codec_dais(rtd, i, codec_dai) {

 		component = codec_dai->component;
 		/* Set default mclk for internal codec */
 		rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE,
 				       SND_SOC_CLOCK_IN);
 		if (rval != 0 && rval != -ENOTSUPP) {
 			dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
 			return rval;
 		}
 		rval = snd_soc_component_set_jack(component, &pdata->jack, NULL);
 		if (rval != 0 && rval != -ENOTSUPP) {
 			dev_warn(card->dev, "Failed to set jack: %d\n", rval);
 			return rval;
 		}
 	}

 	return 0;
 }

 static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);

 	return apq8016_dai_init(rtd, cpu_dai->id);
 }

 static void apq8016_sbc_add_ops(struct snd_soc_card *card)
 {
 	struct snd_soc_dai_link *link;
 	int i;

 	for_each_card_prelinks(card, i, link)
 		link->init = apq8016_sbc_dai_init;
 }

 static int qdsp6_dai_get_lpass_id(struct snd_soc_dai *cpu_dai)
 {
 	switch (cpu_dai->id) {
 	case PRIMARY_MI2S_RX:
 	case PRIMARY_MI2S_TX:
 		return MI2S_PRIMARY;
 	case SECONDARY_MI2S_RX:
 	case SECONDARY_MI2S_TX:
 		return MI2S_SECONDARY;
 	case TERTIARY_MI2S_RX:
 	case TERTIARY_MI2S_TX:
 		return MI2S_TERTIARY;
 	case QUATERNARY_MI2S_RX:
 	case QUATERNARY_MI2S_TX:
 		return MI2S_QUATERNARY;
 	default:
 		return -EINVAL;
 	}
 }

 static int msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);

 	snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
 	return apq8016_dai_init(rtd, qdsp6_dai_get_lpass_id(cpu_dai));
 }

 static int msm8916_qdsp6_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_card *card = rtd->card;
 	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	int mi2s, ret;

 	mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
 	if (mi2s < 0)
 		return mi2s;

 	if (++data->mi2s_clk_count[mi2s] > 1)
 		return 0;

 	ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, MI2S_BCLK_RATE, 0);
 	if (ret)
 		dev_err(card->dev, "Failed to enable LPAIF bit clk: %d\n", ret);
 	return ret;
 }

 static void msm8916_qdsp6_shutdown(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_card *card = rtd->card;
 	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 	int mi2s, ret;

 	mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
 	if (mi2s < 0)
 		return;

 	if (--data->mi2s_clk_count[mi2s] > 0)
 		return;

 	ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, 0, 0);
 	if (ret)
 		dev_err(card->dev, "Failed to disable LPAIF bit clk: %d\n", ret);
 }

 static const struct snd_soc_ops msm8916_qdsp6_be_ops = {
 	.startup = msm8916_qdsp6_startup,
 	.shutdown = msm8916_qdsp6_shutdown,
 };

 static int msm8916_qdsp6_be_hw_params_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);
 	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);

 	rate->min = rate->max = 48000;
 	channels->min = channels->max = 2;
 	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);

 	return 0;
 }

 static void msm8916_qdsp6_add_ops(struct snd_soc_card *card)
 {
 	struct snd_soc_dai_link *link;
 	int i;

 	/* Make it obvious to userspace that QDSP6 is used */
 	card->components = "qdsp6";

 	for_each_card_prelinks(card, i, link) {
 		if (link->no_pcm) {
 			link->init = msm8916_qdsp6_dai_init;
 			link->ops = &msm8916_qdsp6_be_ops;
 			link->be_hw_params_fixup = msm8916_qdsp6_be_hw_params_fixup;
 		}
 	}
 }

 static const struct snd_kcontrol_new apq8016_sbc_snd_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 	SOC_DAPM_PIN_SWITCH("Mic Jack"),
 };

 static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
 	SND_SOC_DAPM_MIC("Mic Jack", NULL),
 	SND_SOC_DAPM_MIC("Handset Mic", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 	SND_SOC_DAPM_MIC("Secondary Mic", NULL),
 	SND_SOC_DAPM_MIC("Digital Mic1", NULL),
 	SND_SOC_DAPM_MIC("Digital Mic2", NULL),
 };

 static int apq8016_sbc_platform_probe(struct platform_device *pdev)
 {
 	void (*add_ops)(struct snd_soc_card *card);
 	struct device *dev = &pdev->dev;
 	struct snd_soc_card *card;
 	struct apq8016_sbc_data *data;
 	int ret;

 	add_ops = device_get_match_data(&pdev->dev);
 	if (!add_ops)
 		return -EINVAL;

 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;

 	card = &data->card;
 	card->dev = dev;
 	card->owner = THIS_MODULE;
 	card->dapm_widgets = apq8016_sbc_dapm_widgets;
 	card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
 	card->controls = apq8016_sbc_snd_controls;
 	card->num_controls = ARRAY_SIZE(apq8016_sbc_snd_controls);

 	ret = qcom_snd_parse_of(card);
 	if (ret)
 		return ret;

 	data->mic_iomux = devm_platform_ioremap_resource_byname(pdev, "mic-iomux");
 	if (IS_ERR(data->mic_iomux))
 		return PTR_ERR(data->mic_iomux);

 	data->spkr_iomux = devm_platform_ioremap_resource_byname(pdev, "spkr-iomux");
 	if (IS_ERR(data->spkr_iomux))
 		return PTR_ERR(data->spkr_iomux);

 	snd_soc_card_set_drvdata(card, data);

 	add_ops(card);
 	return devm_snd_soc_register_card(&pdev->dev, card);
 }

 static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = {
 	{ .compatible = "qcom,apq8016-sbc-sndcard", .data = apq8016_sbc_add_ops },
 	{ .compatible = "qcom,msm8916-qdsp6-sndcard", .data = msm8916_qdsp6_add_ops },
 	{},
 };
 MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);

 static struct platform_driver apq8016_sbc_platform_driver = {
 	.driver = {
 		.name = "qcom-apq8016-sbc",
 		.of_match_table = of_match_ptr(apq8016_sbc_device_id),
 	},
 	.probe = apq8016_sbc_platform_probe,
 };
 module_platform_driver(apq8016_sbc_platform_driver);

 MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
 MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
 MODULE_LICENSE("GPL v2");
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* Copyright (c) 2015 The Linux Foundation. All rights reserved.
	*/

	#include <linux/device.h>
	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/io.h>
	#include <linux/of.h>
	#include <linux/clk.h>
	#include <linux/platform_device.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/jack.h>
	#include <sound/soc.h>
	#include <uapi/linux/input-event-codes.h>
	#include <dt-bindings/sound/apq8016-lpass.h>
	#include "common.h"
	#include "qdsp6/q6afe.h"

	#define MI2S_COUNT (MI2S_QUATERNARY + 1)

	struct apq8016_sbc_data {
	struct snd_soc_card card;
	void __iomem *mic_iomux;
	void __iomem *spkr_iomux;
	struct snd_soc_jack jack;
	bool jack_setup;
	int mi2s_clk_count[MI2S_COUNT];
	};

	#define MIC_CTRL_TER_WS_SLAVE_SEL BIT(21)
	#define MIC_CTRL_QUA_WS_SLAVE_SEL_10 BIT(17)
	#define MIC_CTRL_TLMM_SCLK_EN BIT(1)
	#define SPKR_CTL_PRI_WS_SLAVE_SEL_11 (BIT(17) \| BIT(16))
	#define SPKR_CTL_TLMM_MCLK_EN BIT(1)
	#define SPKR_CTL_TLMM_SCLK_EN BIT(2)
	#define SPKR_CTL_TLMM_DATA1_EN BIT(3)
	#define SPKR_CTL_TLMM_WS_OUT_SEL_MASK GENMASK(7, 6)
	#define SPKR_CTL_TLMM_WS_OUT_SEL_SEC BIT(6)
	#define SPKR_CTL_TLMM_WS_EN_SEL_MASK GENMASK(19, 18)
	#define SPKR_CTL_TLMM_WS_EN_SEL_SEC BIT(18)
	#define DEFAULT_MCLK_RATE 9600000
	#define MI2S_BCLK_RATE 1536000

	static struct snd_soc_jack_pin apq8016_sbc_jack_pins[] = {
	{
	.pin = "Mic Jack",
	.mask = SND_JACK_MICROPHONE,
	},
	{
	.pin = "Headphone Jack",
	.mask = SND_JACK_HEADPHONE,
	},
	};

	static int apq8016_dai_init(struct snd_soc_pcm_runtime *rtd, int mi2s)
	{
	struct snd_soc_dai *codec_dai;
	struct snd_soc_component *component;
	struct snd_soc_card *card = rtd->card;
	struct apq8016_sbc_data *pdata = snd_soc_card_get_drvdata(card);
	int i, rval;
	u32 value;

	switch (mi2s) {
	case MI2S_PRIMARY:
	writel(readl(pdata->spkr_iomux) \| SPKR_CTL_PRI_WS_SLAVE_SEL_11,
	pdata->spkr_iomux);
	break;

	case MI2S_QUATERNARY:
	/* Configure the Quat MI2S to TLMM */
	writel(readl(pdata->mic_iomux) \| MIC_CTRL_QUA_WS_SLAVE_SEL_10 \|
	MIC_CTRL_TLMM_SCLK_EN,
	pdata->mic_iomux);
	break;
	case MI2S_SECONDARY:
	/* Clear TLMM_WS_OUT_SEL and TLMM_WS_EN_SEL fields */
	value = readl(pdata->spkr_iomux) &
	~(SPKR_CTL_TLMM_WS_OUT_SEL_MASK \| SPKR_CTL_TLMM_WS_EN_SEL_MASK);
	/* Configure the Sec MI2S to TLMM */
	writel(value \| SPKR_CTL_TLMM_MCLK_EN \| SPKR_CTL_TLMM_SCLK_EN \|
	SPKR_CTL_TLMM_DATA1_EN \| SPKR_CTL_TLMM_WS_OUT_SEL_SEC \|
	SPKR_CTL_TLMM_WS_EN_SEL_SEC, pdata->spkr_iomux);
	break;
	case MI2S_TERTIARY:
	writel(readl(pdata->mic_iomux) \| MIC_CTRL_TER_WS_SLAVE_SEL \|
	MIC_CTRL_TLMM_SCLK_EN,
	pdata->mic_iomux);

	break;

	default:
	dev_err(card->dev, "unsupported cpu dai configuration\n");
	return -EINVAL;

	}

	if (!pdata->jack_setup) {
	struct snd_jack *jack;

	rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
	SND_JACK_HEADSET \|
	SND_JACK_HEADPHONE \|
	SND_JACK_BTN_0 \| SND_JACK_BTN_1 \|
	SND_JACK_BTN_2 \| SND_JACK_BTN_3 \|
	SND_JACK_BTN_4,
	&pdata->jack,
	apq8016_sbc_jack_pins,
	ARRAY_SIZE(apq8016_sbc_jack_pins));

	if (rval < 0) {
	dev_err(card->dev, "Unable to add Headphone Jack\n");
	return rval;
	}

	jack = pdata->jack.jack;

	snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
	snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
	snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
	snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
	pdata->jack_setup = true;
	}

	for_each_rtd_codec_dais(rtd, i, codec_dai) {

	component = codec_dai->component;
	/* Set default mclk for internal codec */
	rval = snd_soc_component_set_sysclk(component, 0, 0, DEFAULT_MCLK_RATE,
	SND_SOC_CLOCK_IN);
	if (rval != 0 && rval != -ENOTSUPP) {
	dev_warn(card->dev, "Failed to set mclk: %d\n", rval);
	return rval;
	}
	rval = snd_soc_component_set_jack(component, &pdata->jack, NULL);
	if (rval != 0 && rval != -ENOTSUPP) {
	dev_warn(card->dev, "Failed to set jack: %d\n", rval);
	return rval;
	}
	}

	return 0;
	}

	static int apq8016_sbc_dai_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);

	return apq8016_dai_init(rtd, cpu_dai->id);
	}

	static void apq8016_sbc_add_ops(struct snd_soc_card *card)
	{
	struct snd_soc_dai_link *link;
	int i;

	for_each_card_prelinks(card, i, link)
	link->init = apq8016_sbc_dai_init;
	}

	static int qdsp6_dai_get_lpass_id(struct snd_soc_dai *cpu_dai)
	{
	switch (cpu_dai->id) {
	case PRIMARY_MI2S_RX:
	case PRIMARY_MI2S_TX:
	return MI2S_PRIMARY;
	case SECONDARY_MI2S_RX:
	case SECONDARY_MI2S_TX:
	return MI2S_SECONDARY;
	case TERTIARY_MI2S_RX:
	case TERTIARY_MI2S_TX:
	return MI2S_TERTIARY;
	case QUATERNARY_MI2S_RX:
	case QUATERNARY_MI2S_TX:
	return MI2S_QUATERNARY;
	default:
	return -EINVAL;
	}
	}

	static int msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);

	snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
	return apq8016_dai_init(rtd, qdsp6_dai_get_lpass_id(cpu_dai));
	}

	static int msm8916_qdsp6_startup(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_card *card = rtd->card;
	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	int mi2s, ret;

	mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
	if (mi2s < 0)
	return mi2s;

	if (++data->mi2s_clk_count[mi2s] > 1)
	return 0;

	ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, MI2S_BCLK_RATE, 0);
	if (ret)
	dev_err(card->dev, "Failed to enable LPAIF bit clk: %d\n", ret);
	return ret;
	}

	static void msm8916_qdsp6_shutdown(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_card *card = rtd->card;
	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
	int mi2s, ret;

	mi2s = qdsp6_dai_get_lpass_id(cpu_dai);
	if (mi2s < 0)
	return;

	if (--data->mi2s_clk_count[mi2s] > 0)
	return;

	ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_BIT_CLK, 0, 0);
	if (ret)
	dev_err(card->dev, "Failed to disable LPAIF bit clk: %d\n", ret);
	}

	static const struct snd_soc_ops msm8916_qdsp6_be_ops = {
	.startup = msm8916_qdsp6_startup,
	.shutdown = msm8916_qdsp6_shutdown,
	};

	static int msm8916_qdsp6_be_hw_params_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);
	struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);

	rate->min = rate->max = 48000;
	channels->min = channels->max = 2;
	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);

	return 0;
	}

	static void msm8916_qdsp6_add_ops(struct snd_soc_card *card)
	{
	struct snd_soc_dai_link *link;
	int i;

	/* Make it obvious to userspace that QDSP6 is used */
	card->components = "qdsp6";

	for_each_card_prelinks(card, i, link) {
	if (link->no_pcm) {
	link->init = msm8916_qdsp6_dai_init;
	link->ops = &msm8916_qdsp6_be_ops;
	link->be_hw_params_fixup = msm8916_qdsp6_be_hw_params_fixup;
	}
	}
	}

	static const struct snd_kcontrol_new apq8016_sbc_snd_controls[] = {
	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
	SOC_DAPM_PIN_SWITCH("Mic Jack"),
	};

	static const struct snd_soc_dapm_widget apq8016_sbc_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_MIC("Handset Mic", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_MIC("Secondary Mic", NULL),
	SND_SOC_DAPM_MIC("Digital Mic1", NULL),
	SND_SOC_DAPM_MIC("Digital Mic2", NULL),
	};

	static int apq8016_sbc_platform_probe(struct platform_device *pdev)
	{
	void (add_ops)(struct snd_soc_card card);
	struct device *dev = &pdev->dev;
	struct snd_soc_card *card;
	struct apq8016_sbc_data *data;
	int ret;

	add_ops = device_get_match_data(&pdev->dev);
	if (!add_ops)
	return -EINVAL;

	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
	if (!data)
	return -ENOMEM;

	card = &data->card;
	card->dev = dev;
	card->owner = THIS_MODULE;
	card->dapm_widgets = apq8016_sbc_dapm_widgets;
	card->num_dapm_widgets = ARRAY_SIZE(apq8016_sbc_dapm_widgets);
	card->controls = apq8016_sbc_snd_controls;
	card->num_controls = ARRAY_SIZE(apq8016_sbc_snd_controls);

	ret = qcom_snd_parse_of(card);
	if (ret)
	return ret;

	data->mic_iomux = devm_platform_ioremap_resource_byname(pdev, "mic-iomux");
	if (IS_ERR(data->mic_iomux))
	return PTR_ERR(data->mic_iomux);

	data->spkr_iomux = devm_platform_ioremap_resource_byname(pdev, "spkr-iomux");
	if (IS_ERR(data->spkr_iomux))
	return PTR_ERR(data->spkr_iomux);

	snd_soc_card_set_drvdata(card, data);

	add_ops(card);
	return devm_snd_soc_register_card(&pdev->dev, card);
	}

	static const struct of_device_id apq8016_sbc_device_id[] __maybe_unused = {
	{ .compatible = "qcom,apq8016-sbc-sndcard", .data = apq8016_sbc_add_ops },
	{ .compatible = "qcom,msm8916-qdsp6-sndcard", .data = msm8916_qdsp6_add_ops },
	{},
	};
	MODULE_DEVICE_TABLE(of, apq8016_sbc_device_id);

	static struct platform_driver apq8016_sbc_platform_driver = {
	.driver = {
	.name = "qcom-apq8016-sbc",
	.of_match_table = of_match_ptr(apq8016_sbc_device_id),
	},
	.probe = apq8016_sbc_platform_probe,
	};
	module_platform_driver(apq8016_sbc_platform_driver);

	MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
	MODULE_DESCRIPTION("APQ8016 ASoC Machine Driver");
	MODULE_LICENSE("GPL v2");