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Unverified Commit 6b1687bf authored by Rohit kumar's avatar Rohit kumar Committed by Mark Brown
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ASoC: qcom: add sdm845 sound card support 



This patch adds sdm845 audio machine driver support.

Acked-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: default avatarRohit kumar <rohitkr@codeaurora.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent c25e295c

sound/soc/qcom/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -90,3 +90,11 @@ config SND_SOC_MSM8996 
          Support for Qualcomm Technologies LPASS audio block in

          APQ8096 SoC-based systems.

          Say Y if you want to use audio device on this SoCs



config SND_SOC_SDM845

	tristate "SoC Machine driver for SDM845 boards"

	select SND_SOC_QDSP6

	help

	  To add support for audio on Qualcomm Technologies Inc.

	  SDM845 SoC-based systems.

	  Say Y if you want to use audio device on this SoCs.

sound/soc/qcom/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -14,10 +14,12 @@ obj-$(CONFIG_SND_SOC_LPASS_APQ8016) += snd-soc-lpass-apq8016.o 
snd-soc-storm-objs := storm.o

snd-soc-apq8016-sbc-objs := apq8016_sbc.o

snd-soc-apq8096-objs := apq8096.o common.o

snd-soc-sdm845-objs := sdm845.o common.o



obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o

obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o

obj-$(CONFIG_SND_SOC_MSM8996) += snd-soc-apq8096.o

obj-$(CONFIG_SND_SOC_SDM845) += snd-soc-sdm845.o



#DSP lib

obj-$(CONFIG_SND_SOC_QDSP6) += qdsp6/

sound/soc/qcom/sdm845.c

0 → 100644
+286 −0
Original line number Diff line number Diff line 
// 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/atomic.h>

#include <linux/of_device.h>

#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <linux/soc/qcom/apr.h>

#include "common.h"

#include "qdsp6/q6afe.h"



#define DEFAULT_SAMPLE_RATE_48K		48000

#define DEFAULT_MCLK_RATE		24576000

#define DEFAULT_BCLK_RATE		12288000



struct sdm845_snd_data {

	struct snd_soc_card *card;

	uint32_t pri_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 = 32;

		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_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,

				DEFAULT_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);

		}

		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,

				DEFAULT_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 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 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 void sdm845_add_be_ops(struct snd_soc_card *card)

{

	struct snd_soc_dai_link *link = card->dai_link;

	int i, num_links = card->num_links;



	for (i = 0; i < num_links; i++) {

		if (link->no_pcm == 1) {

			link->ops = &sdm845_be_ops;

			link->be_hw_params_fixup = sdm845_be_hw_params_fixup;

		}

		link++;

	}

}



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)

		return -ENOMEM;



	card->dev = dev;

	card->auto_bind = true;

	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_be_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);

	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);



	card->auto_bind = false;

	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");