| // SPDX-License-Identifier: GPL-2.0 |
| // Copyright (c) 2020, Linaro Limited |
| |
| #include <dt-bindings/sound/qcom,q6afe.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 = snd_soc_substream_to_rtd(substream); |
| 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 PRIMARY_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_PRI_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; |
| case SECONDARY_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_SEC_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; |
| 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 qcom_snd_sdw_startup(substream); |
| } |
| |
| static void sm8250_snd_shutdown(struct snd_pcm_substream *substream) |
| { |
| struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
| 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]; |
| |
| data->sruntime[cpu_dai->id] = NULL; |
| sdw_release_stream(sruntime); |
| } |
| |
| static int sm8250_snd_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); |
| 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 = snd_soc_substream_to_rtd(substream); |
| 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 = snd_soc_substream_to_rtd(substream); |
| 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, |
| .shutdown = sm8250_snd_shutdown, |
| .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,qrb4210-rb2-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"); |