173 lines
4.8 KiB
C
173 lines
4.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2020, Linaro Limited
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/of_device.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <sound/pcm.h>
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#include <linux/soundwire/sdw.h>
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#include <sound/jack.h>
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#include <linux/input-event-codes.h>
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#include "qdsp6/q6afe.h"
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#include "common.h"
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#include "sdw.h"
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#define DRIVER_NAME "sm8250"
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#define MI2S_BCLK_RATE 1536000
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struct sm8250_snd_data {
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bool stream_prepared[AFE_PORT_MAX];
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struct snd_soc_card *card;
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struct sdw_stream_runtime *sruntime[AFE_PORT_MAX];
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struct snd_soc_jack jack;
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bool jack_setup;
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};
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static int sm8250_snd_init(struct snd_soc_pcm_runtime *rtd)
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{
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struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
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return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup);
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}
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static int sm8250_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
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struct snd_pcm_hw_params *params)
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{
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struct snd_interval *rate = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_RATE);
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struct snd_interval *channels = hw_param_interval(params,
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SNDRV_PCM_HW_PARAM_CHANNELS);
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rate->min = rate->max = 48000;
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channels->min = channels->max = 2;
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return 0;
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}
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static int sm8250_snd_startup(struct snd_pcm_substream *substream)
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{
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unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
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unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
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struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
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switch (cpu_dai->id) {
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case TERTIARY_MI2S_RX:
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codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S;
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snd_soc_dai_set_sysclk(cpu_dai,
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Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT,
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MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK);
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snd_soc_dai_set_fmt(cpu_dai, fmt);
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snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt);
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break;
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default:
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break;
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}
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return 0;
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}
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static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
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struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
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return qcom_snd_sdw_hw_params(substream, params, &pdata->sruntime[cpu_dai->id]);
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}
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static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
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struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
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struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
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return qcom_snd_sdw_prepare(substream, sruntime,
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&data->stream_prepared[cpu_dai->id]);
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}
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static int sm8250_snd_hw_free(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
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struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
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struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
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return qcom_snd_sdw_hw_free(substream, sruntime,
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&data->stream_prepared[cpu_dai->id]);
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}
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static const struct snd_soc_ops sm8250_be_ops = {
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.startup = sm8250_snd_startup,
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.hw_params = sm8250_snd_hw_params,
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.hw_free = sm8250_snd_hw_free,
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.prepare = sm8250_snd_prepare,
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};
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static void sm8250_add_be_ops(struct snd_soc_card *card)
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{
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struct snd_soc_dai_link *link;
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int i;
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for_each_card_prelinks(card, i, link) {
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if (link->no_pcm == 1) {
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link->init = sm8250_snd_init;
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link->be_hw_params_fixup = sm8250_be_hw_params_fixup;
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link->ops = &sm8250_be_ops;
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}
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}
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}
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static int sm8250_platform_probe(struct platform_device *pdev)
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{
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struct snd_soc_card *card;
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struct sm8250_snd_data *data;
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struct device *dev = &pdev->dev;
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int ret;
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card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
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if (!card)
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return -ENOMEM;
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card->owner = THIS_MODULE;
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/* Allocate the private data */
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data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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card->dev = dev;
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dev_set_drvdata(dev, card);
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snd_soc_card_set_drvdata(card, data);
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ret = qcom_snd_parse_of(card);
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if (ret)
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return ret;
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card->driver_name = DRIVER_NAME;
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sm8250_add_be_ops(card);
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return devm_snd_soc_register_card(dev, card);
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}
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static const struct of_device_id snd_sm8250_dt_match[] = {
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{.compatible = "qcom,sm8250-sndcard"},
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{.compatible = "qcom,qrb5165-rb5-sndcard"},
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{}
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};
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MODULE_DEVICE_TABLE(of, snd_sm8250_dt_match);
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static struct platform_driver snd_sm8250_driver = {
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.probe = sm8250_platform_probe,
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.driver = {
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.name = "snd-sm8250",
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.of_match_table = snd_sm8250_dt_match,
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},
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};
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module_platform_driver(snd_sm8250_driver);
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MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org");
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MODULE_DESCRIPTION("SM8250 ASoC Machine Driver");
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MODULE_LICENSE("GPL v2");
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