diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/qcom/sc8280xp.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/sound/soc/qcom/sc8280xp.c b/sound/soc/qcom/sc8280xp.c new file mode 100644 index 0000000000..c61cad0180 --- /dev/null +++ b/sound/soc/qcom/sc8280xp.c @@ -0,0 +1,175 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2022, 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 "sc8280xp" + +struct sc8280xp_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 sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd) +{ + struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card); + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + struct snd_soc_card *card = rtd->card; + + switch (cpu_dai->id) { + case WSA_CODEC_DMA_RX_0: + case WSA_CODEC_DMA_RX_1: + /* + * set limit of 0dB on Digital Volume for Speakers, + * this can prevent damage of speakers to some extent without + * active speaker protection + */ + snd_soc_limit_volume(card, "WSA_RX0 Digital Volume", 84); + snd_soc_limit_volume(card, "WSA_RX1 Digital Volume", 84); + break; + default: + break; + } + + return qcom_snd_wcd_jack_setup(rtd, &data->jack, &data->jack_setup); +} + +static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + 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 = 2; + channels->max = 2; + switch (cpu_dai->id) { + case TX_CODEC_DMA_TX_0: + case TX_CODEC_DMA_TX_1: + case TX_CODEC_DMA_TX_2: + case TX_CODEC_DMA_TX_3: + channels->min = 1; + break; + default: + break; + } + + + return 0; +} + +static int sc8280xp_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 sc8280xp_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 sc8280xp_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 sc8280xp_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 sc8280xp_snd_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct sc8280xp_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 sc8280xp_be_ops = { + .hw_params = sc8280xp_snd_hw_params, + .hw_free = sc8280xp_snd_hw_free, + .prepare = sc8280xp_snd_prepare, +}; + +static void sc8280xp_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 = sc8280xp_snd_init; + link->be_hw_params_fixup = sc8280xp_be_hw_params_fixup; + link->ops = &sc8280xp_be_ops; + } + } +} + +static int sc8280xp_platform_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card; + struct sc8280xp_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; + sc8280xp_add_be_ops(card); + return devm_snd_soc_register_card(dev, card); +} + +static const struct of_device_id snd_sc8280xp_dt_match[] = { + {.compatible = "qcom,sc8280xp-sndcard",}, + {} +}; + +MODULE_DEVICE_TABLE(of, snd_sc8280xp_dt_match); + +static struct platform_driver snd_sc8280xp_driver = { + .probe = sc8280xp_platform_probe, + .driver = { + .name = "snd-sc8280xp", + .of_match_table = snd_sc8280xp_dt_match, + }, +}; +module_platform_driver(snd_sc8280xp_driver); +MODULE_AUTHOR("Srinivas Kandagatla <srinivas.kandagatla@linaro.org"); +MODULE_DESCRIPTION("SC8280XP ASoC Machine Driver"); +MODULE_LICENSE("GPL v2"); |