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// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2020, Linaro Limited
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/pcm.h>
#include <linux/soundwire/sdw.h>
#include <sound/jack.h>
#include <linux/input-event-codes.h>
#include "qdsp6/q6afe.h"
#include "common.h"
#include "sdw.h"
#define DRIVER_NAME "sm8250"
#define MI2S_BCLK_RATE 1536000
struct sm8250_snd_data {
bool stream_prepared[AFE_PORT_MAX];
struct snd_soc_card *card;
struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
struct snd_soc_jack jack;
bool jack_setup;
};
static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
{
struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
}
static int sm8250_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);
rate->min = rate->max = 48000;
channels->min = channels->max = 2;
return 0;
}
static int sm8250_snd_startup(struct snd_pcm_substream *substream)
{
unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
switch (cpu_dai->id) {
case TERTIARY_MI2S_RX:
codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
snd_soc_dai_set_sysclk(cpu_dai,
Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
snd_soc_dai_set_fmt(cpu_dai, fmt);
snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
break;
default:
break;
}
return 0;
}
static int sm8250_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 = snd_soc_rtd_to_cpu(rtd, 0);
struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
}
static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
return qcom_snd_sdw_prepare(substream, sruntime,
&data->stream_prepared[cpu_dai->id]);
}
static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
return qcom_snd_sdw_hw_free(substream, sruntime,
&data->stream_prepared[cpu_dai->id]);
}
static const struct snd_soc_ops sm8250_be_ops = {
.startup = sm8250_snd_startup,
.hw_params = sm8250_snd_hw_params,
.hw_free = sm8250_snd_hw_free,
.prepare = sm8250_snd_prepare,
};
static void sm8250_add_be_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->init = sm8250_snd_init;
link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
link->ops = &sm8250_be_ops;
}
}
}
static int sm8250_platform_probe(struct platform_device *pdev)
{
struct snd_soc_card *card;
struct sm8250_snd_data *data;
struct device *dev = &pdev->dev;
int ret;
card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
if (!card)
return -ENOMEM;
card->owner = THIS_MODULE;
/* Allocate the private data */
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
card->dev = dev;
dev_set_drvdata(dev, card);
snd_soc_card_set_drvdata(card, data);
ret = qcom_snd_parse_of(card);
if (ret)
return ret;
card->driver_name = DRIVER_NAME;
sm8250_add_be_ops(card);
return devm_snd_soc_register_card(dev, card);
}
static const struct of_device_id snd_sm8250_dt_match[] = {
{.compatible = "qcom,sm8250-sndcard"},
{.compatible = "qcom,qrb5165-rb5-sndcard"},
{}
};
MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
static struct platform_driver snd_sm8250_driver = {
.probe = sm8250_platform_probe,
.driver = {
.name = "snd-sm8250",
.of_match_table = snd_sm8250_dt_match,
},
};
module_platform_driver(snd_sm8250_driver);
MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
MODULE_LICENSE("GPL v2");
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