sound/soc/qcom/sdm845.c - SHIFTPHONES/mainline/linux - Gitiles

 // SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (c) 2018, The Linux Foundation. All rights reserved.
  */

 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/of_device.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/jack.h>
 #include <uapi/linux/input-event-codes.h>
 #include "common.h"
 #include "qdsp6/q6afe.h"

 #define DEFAULT_SAMPLE_RATE_48K		48000
 #define DEFAULT_MCLK_RATE		24576000
 #define TDM_BCLK_RATE		6144000
 #define MI2S_BCLK_RATE		1536000

 struct sdm845_snd_data {
 	struct snd_soc_jack jack;
 	bool jack_setup;
 	struct snd_soc_card *card;
 	uint32_t pri_mi2s_clk_count;
 	uint32_t sec_mi2s_clk_count;
 	uint32_t quat_tdm_clk_count;
 };

 static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28};

 static int sdm845_tdm_snd_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 *cpu_dai = rtd->cpu_dai;
 	int ret = 0;
 	int channels, slot_width;

 	switch (params_format(params)) {
 	case SNDRV_PCM_FORMAT_S16_LE:
 		slot_width = 16;
 		break;
 	default:
 		dev_err(rtd->dev, "%s: invalid param format 0x%x\n",
 				__func__, params_format(params));
 		return -EINVAL;
 	}

 	channels = params_channels(params);
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0x3,
 				8, slot_width);
 		if (ret < 0) {
 			dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
 					__func__, ret);
 			goto end;
 		}

 		ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
 				channels, tdm_slot_offset);
 		if (ret < 0) {
 			dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
 					__func__, ret);
 			goto end;
 		}
 	} else {
 		ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xf, 0,
 				8, slot_width);
 		if (ret < 0) {
 			dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
 					__func__, ret);
 			goto end;
 		}

 		ret = snd_soc_dai_set_channel_map(cpu_dai, channels,
 				tdm_slot_offset, 0, NULL);
 		if (ret < 0) {
 			dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
 					__func__, ret);
 			goto end;
 		}
 	}
 end:
 	return ret;
 }

 static int sdm845_snd_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 *cpu_dai = rtd->cpu_dai;
 	int ret = 0;

 	switch (cpu_dai->id) {
 	case QUATERNARY_TDM_RX_0:
 	case QUATERNARY_TDM_TX_0:
 		ret = sdm845_tdm_snd_hw_params(substream, params);
 		break;
 	default:
 		pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
 		break;
 	}
 	return ret;
 }

 static int sdm845_dai_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_component *component;
 	struct snd_soc_dai_link *dai_link = rtd->dai_link;
 	struct snd_soc_card *card = rtd->card;
 	struct sdm845_snd_data *pdata = snd_soc_card_get_drvdata(card);
 	int i, rval;

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

 		rval = snd_soc_card_jack_new(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,
 				&pdata->jack, NULL, 0);

 		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 (i = 0 ; i < dai_link->num_codecs; i++) {
 		struct snd_soc_dai *dai = rtd->codec_dais[i];

 		component = dai->component;
 		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 sdm845_snd_startup(struct snd_pcm_substream *substream)
 {
 	unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_card *card = rtd->card;
 	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

 	switch (cpu_dai->id) {
 	case PRIMARY_MI2S_RX:
 	case PRIMARY_MI2S_TX:
 		if (++(data->pri_mi2s_clk_count) == 1) {
 			snd_soc_dai_set_sysclk(cpu_dai,
 				Q6AFE_LPASS_CLK_ID_MCLK_1,
 				DEFAULT_MCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 			snd_soc_dai_set_sysclk(cpu_dai,
 				Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
 				MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 		}
 		snd_soc_dai_set_fmt(cpu_dai, fmt);
 		break;

 	case SECONDARY_MI2S_TX:
 		if (++(data->sec_mi2s_clk_count) == 1) {
 			snd_soc_dai_set_sysclk(cpu_dai,
 				Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
 				MI2S_BCLK_RATE,	SNDRV_PCM_STREAM_CAPTURE);
 		}
 		snd_soc_dai_set_fmt(cpu_dai, fmt);
 		break;

 	case QUATERNARY_TDM_RX_0:
 	case QUATERNARY_TDM_TX_0:
 		if (++(data->quat_tdm_clk_count) == 1) {
 			snd_soc_dai_set_sysclk(cpu_dai,
 				Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
 				TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
 		}
 		break;

 	default:
 		pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
 		break;
 	}
 	return 0;
 }

 static void  sdm845_snd_shutdown(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_card *card = rtd->card;
 	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

 	switch (cpu_dai->id) {
 	case PRIMARY_MI2S_RX:
 	case PRIMARY_MI2S_TX:
 		if (--(data->pri_mi2s_clk_count) == 0) {
 			snd_soc_dai_set_sysclk(cpu_dai,
 				Q6AFE_LPASS_CLK_ID_MCLK_1,
 				0, SNDRV_PCM_STREAM_PLAYBACK);
 			snd_soc_dai_set_sysclk(cpu_dai,
 				Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
 				0, SNDRV_PCM_STREAM_PLAYBACK);
 		};
 		break;

 	case SECONDARY_MI2S_TX:
 		if (--(data->sec_mi2s_clk_count) == 0) {
 			snd_soc_dai_set_sysclk(cpu_dai,
 				Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
 				0, SNDRV_PCM_STREAM_CAPTURE);
 		}
 		break;

 	case QUATERNARY_TDM_RX_0:
 	case QUATERNARY_TDM_TX_0:
 		if (--(data->quat_tdm_clk_count) == 0) {
 			snd_soc_dai_set_sysclk(cpu_dai,
 				Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
 				0, SNDRV_PCM_STREAM_PLAYBACK);
 		}
 		break;

 	default:
 		pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
 		break;
 	}
 }

 static const struct snd_soc_ops sdm845_be_ops = {
 	.hw_params = sdm845_snd_hw_params,
 	.startup = sdm845_snd_startup,
 	.shutdown = sdm845_snd_shutdown,
 };

 static int sdm845_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 = DEFAULT_SAMPLE_RATE_48K;
 	channels->min = channels->max = 2;
 	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);

 	return 0;
 }

 static const struct snd_soc_dapm_widget sdm845_snd_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 	SND_SOC_DAPM_SPK("Left Spk", NULL),
 	SND_SOC_DAPM_SPK("Right Spk", NULL),
 	SND_SOC_DAPM_MIC("Int Mic", NULL),
 };

 static void sdm845_add_ops(struct snd_soc_card *card)
 {
 	struct snd_soc_dai_link *link;
 	int i;

 	for_each_card_prelinks(card, i, link) {
 		if (link->no_pcm == 1) {
 			link->ops = &sdm845_be_ops;
 			link->be_hw_params_fixup = sdm845_be_hw_params_fixup;
 		}
 		link->init = sdm845_dai_init;
 	}
 }

 static int sdm845_snd_platform_probe(struct platform_device *pdev)
 {
 	struct snd_soc_card *card;
 	struct sdm845_snd_data *data;
 	struct device *dev = &pdev->dev;
 	int ret;

 	card = kzalloc(sizeof(*card), GFP_KERNEL);
 	if (!card)
 		return -ENOMEM;

 	/* Allocate the private data */
 	data = kzalloc(sizeof(*data), GFP_KERNEL);
 	if (!data) {
 		ret = -ENOMEM;
 		goto data_alloc_fail;
 	}

 	card->dapm_widgets = sdm845_snd_widgets;
 	card->num_dapm_widgets = ARRAY_SIZE(sdm845_snd_widgets);
 	card->dev = dev;
 	dev_set_drvdata(dev, card);
 	ret = qcom_snd_parse_of(card);
 	if (ret) {
 		dev_err(dev, "Error parsing OF data\n");
 		goto parse_dt_fail;
 	}

 	data->card = card;
 	snd_soc_card_set_drvdata(card, data);

 	sdm845_add_ops(card);
 	ret = snd_soc_register_card(card);
 	if (ret) {
 		dev_err(dev, "Sound card registration failed\n");
 		goto register_card_fail;
 	}
 	return ret;

 register_card_fail:
 	kfree(card->dai_link);
 parse_dt_fail:
 	kfree(data);
 data_alloc_fail:
 	kfree(card);
 	return ret;
 }

 static int sdm845_snd_platform_remove(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
 	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);

 	snd_soc_unregister_card(card);
 	kfree(card->dai_link);
 	kfree(data);
 	kfree(card);
 	return 0;
 }

 static const struct of_device_id sdm845_snd_device_id[]  = {
 	{ .compatible = "qcom,sdm845-sndcard" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, sdm845_snd_device_id);

 static struct platform_driver sdm845_snd_driver = {
 	.probe = sdm845_snd_platform_probe,
 	.remove = sdm845_snd_platform_remove,
 	.driver = {
 		.name = "msm-snd-sdm845",
 		.of_match_table = sdm845_snd_device_id,
 	},
 };
 module_platform_driver(sdm845_snd_driver);

 MODULE_DESCRIPTION("sdm845 ASoC Machine Driver");
 MODULE_LICENSE("GPL v2");
	// SPDX-License-Identifier: GPL-2.0
	/*
	* Copyright (c) 2018, The Linux Foundation. All rights reserved.
	*/

	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/of_device.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/jack.h>
	#include <uapi/linux/input-event-codes.h>
	#include "common.h"
	#include "qdsp6/q6afe.h"

	#define DEFAULT_SAMPLE_RATE_48K 48000
	#define DEFAULT_MCLK_RATE 24576000
	#define TDM_BCLK_RATE 6144000
	#define MI2S_BCLK_RATE 1536000

	struct sdm845_snd_data {
	struct snd_soc_jack jack;
	bool jack_setup;
	struct snd_soc_card *card;
	uint32_t pri_mi2s_clk_count;
	uint32_t sec_mi2s_clk_count;
	uint32_t quat_tdm_clk_count;
	};

	static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28};

	static int sdm845_tdm_snd_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 *cpu_dai = rtd->cpu_dai;
	int ret = 0;
	int channels, slot_width;

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
	slot_width = 16;
	break;
	default:
	dev_err(rtd->dev, "%s: invalid param format 0x%x\n",
	__func__, params_format(params));
	return -EINVAL;
	}

	channels = params_channels(params);
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0x3,
	8, slot_width);
	if (ret < 0) {
	dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
	__func__, ret);
	goto end;
	}

	ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL,
	channels, tdm_slot_offset);
	if (ret < 0) {
	dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
	__func__, ret);
	goto end;
	}
	} else {
	ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xf, 0,
	8, slot_width);
	if (ret < 0) {
	dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n",
	__func__, ret);
	goto end;
	}

	ret = snd_soc_dai_set_channel_map(cpu_dai, channels,
	tdm_slot_offset, 0, NULL);
	if (ret < 0) {
	dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n",
	__func__, ret);
	goto end;
	}
	}
	end:
	return ret;
	}

	static int sdm845_snd_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 *cpu_dai = rtd->cpu_dai;
	int ret = 0;

	switch (cpu_dai->id) {
	case QUATERNARY_TDM_RX_0:
	case QUATERNARY_TDM_TX_0:
	ret = sdm845_tdm_snd_hw_params(substream, params);
	break;
	default:
	pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
	break;
	}
	return ret;
	}

	static int sdm845_dai_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_component *component;
	struct snd_soc_dai_link *dai_link = rtd->dai_link;
	struct snd_soc_card *card = rtd->card;
	struct sdm845_snd_data *pdata = snd_soc_card_get_drvdata(card);
	int i, rval;

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

	rval = snd_soc_card_jack_new(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,
	&pdata->jack, NULL, 0);

	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 (i = 0 ; i < dai_link->num_codecs; i++) {
	struct snd_soc_dai *dai = rtd->codec_dais[i];

	component = dai->component;
	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 sdm845_snd_startup(struct snd_pcm_substream *substream)
	{
	unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_card *card = rtd->card;
	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

	switch (cpu_dai->id) {
	case PRIMARY_MI2S_RX:
	case PRIMARY_MI2S_TX:
	if (++(data->pri_mi2s_clk_count) == 1) {
	snd_soc_dai_set_sysclk(cpu_dai,
	Q6AFE_LPASS_CLK_ID_MCLK_1,
	DEFAULT_MCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
	snd_soc_dai_set_sysclk(cpu_dai,
	Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
	MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
	}
	snd_soc_dai_set_fmt(cpu_dai, fmt);
	break;

	case SECONDARY_MI2S_TX:
	if (++(data->sec_mi2s_clk_count) == 1) {
	snd_soc_dai_set_sysclk(cpu_dai,
	Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
	MI2S_BCLK_RATE, SNDRV_PCM_STREAM_CAPTURE);
	}
	snd_soc_dai_set_fmt(cpu_dai, fmt);
	break;

	case QUATERNARY_TDM_RX_0:
	case QUATERNARY_TDM_TX_0:
	if (++(data->quat_tdm_clk_count) == 1) {
	snd_soc_dai_set_sysclk(cpu_dai,
	Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
	TDM_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
	}
	break;

	default:
	pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
	break;
	}
	return 0;
	}

	static void sdm845_snd_shutdown(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_card *card = rtd->card;
	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

	switch (cpu_dai->id) {
	case PRIMARY_MI2S_RX:
	case PRIMARY_MI2S_TX:
	if (--(data->pri_mi2s_clk_count) == 0) {
	snd_soc_dai_set_sysclk(cpu_dai,
	Q6AFE_LPASS_CLK_ID_MCLK_1,
	0, SNDRV_PCM_STREAM_PLAYBACK);
	snd_soc_dai_set_sysclk(cpu_dai,
	Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT,
	0, SNDRV_PCM_STREAM_PLAYBACK);
	};
	break;

	case SECONDARY_MI2S_TX:
	if (--(data->sec_mi2s_clk_count) == 0) {
	snd_soc_dai_set_sysclk(cpu_dai,
	Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT,
	0, SNDRV_PCM_STREAM_CAPTURE);
	}
	break;

	case QUATERNARY_TDM_RX_0:
	case QUATERNARY_TDM_TX_0:
	if (--(data->quat_tdm_clk_count) == 0) {
	snd_soc_dai_set_sysclk(cpu_dai,
	Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT,
	0, SNDRV_PCM_STREAM_PLAYBACK);
	}
	break;

	default:
	pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id);
	break;
	}
	}

	static const struct snd_soc_ops sdm845_be_ops = {
	.hw_params = sdm845_snd_hw_params,
	.startup = sdm845_snd_startup,
	.shutdown = sdm845_snd_shutdown,
	};

	static int sdm845_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 = DEFAULT_SAMPLE_RATE_48K;
	channels->min = channels->max = 2;
	snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE);

	return 0;
	}

	static const struct snd_soc_dapm_widget sdm845_snd_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_SPK("Left Spk", NULL),
	SND_SOC_DAPM_SPK("Right Spk", NULL),
	SND_SOC_DAPM_MIC("Int Mic", NULL),
	};

	static void sdm845_add_ops(struct snd_soc_card *card)
	{
	struct snd_soc_dai_link *link;
	int i;

	for_each_card_prelinks(card, i, link) {
	if (link->no_pcm == 1) {
	link->ops = &sdm845_be_ops;
	link->be_hw_params_fixup = sdm845_be_hw_params_fixup;
	}
	link->init = sdm845_dai_init;
	}
	}

	static int sdm845_snd_platform_probe(struct platform_device *pdev)
	{
	struct snd_soc_card *card;
	struct sdm845_snd_data *data;
	struct device *dev = &pdev->dev;
	int ret;

	card = kzalloc(sizeof(*card), GFP_KERNEL);
	if (!card)
	return -ENOMEM;

	/* Allocate the private data */
	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (!data) {
	ret = -ENOMEM;
	goto data_alloc_fail;
	}

	card->dapm_widgets = sdm845_snd_widgets;
	card->num_dapm_widgets = ARRAY_SIZE(sdm845_snd_widgets);
	card->dev = dev;
	dev_set_drvdata(dev, card);
	ret = qcom_snd_parse_of(card);
	if (ret) {
	dev_err(dev, "Error parsing OF data\n");
	goto parse_dt_fail;
	}

	data->card = card;
	snd_soc_card_set_drvdata(card, data);

	sdm845_add_ops(card);
	ret = snd_soc_register_card(card);
	if (ret) {
	dev_err(dev, "Sound card registration failed\n");
	goto register_card_fail;
	}
	return ret;

	register_card_fail:
	kfree(card->dai_link);
	parse_dt_fail:
	kfree(data);
	data_alloc_fail:
	kfree(card);
	return ret;
	}

	static int sdm845_snd_platform_remove(struct platform_device *pdev)
	{
	struct snd_soc_card *card = dev_get_drvdata(&pdev->dev);
	struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card);

	snd_soc_unregister_card(card);
	kfree(card->dai_link);
	kfree(data);
	kfree(card);
	return 0;
	}

	static const struct of_device_id sdm845_snd_device_id[] = {
	{ .compatible = "qcom,sdm845-sndcard" },
	{},
	};
	MODULE_DEVICE_TABLE(of, sdm845_snd_device_id);

	static struct platform_driver sdm845_snd_driver = {
	.probe = sdm845_snd_platform_probe,
	.remove = sdm845_snd_platform_remove,
	.driver = {
	.name = "msm-snd-sdm845",
	.of_match_table = sdm845_snd_device_id,
	},
	};
	module_platform_driver(sdm845_snd_driver);

	MODULE_DESCRIPTION("sdm845 ASoC Machine Driver");
	MODULE_LICENSE("GPL v2");