diff options
Diffstat (limited to 'sound/soc/qcom/sm8250.c')
| -rw-r--r-- | sound/soc/qcom/sm8250.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/sound/soc/qcom/sm8250.c b/sound/soc/qcom/sm8250.c new file mode 100644 index 000000000..9626a9ef7 --- /dev/null +++ b/sound/soc/qcom/sm8250.c @@ -0,0 +1,172 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020, Linaro Limited + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of_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 = asoc_rtd_to_cpu(rtd, 0); + struct snd_soc_dai *codec_dai = asoc_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 = asoc_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 = asoc_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 = asoc_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"); |