diff options
| -rw-r--r-- | sound/soc/qcom/Kconfig | 11 | ||||
| -rw-r--r-- | sound/soc/qcom/Makefile | 2 | ||||
| -rw-r--r-- | sound/soc/qcom/sm8250.c | 228 |
3 files changed, 241 insertions, 0 deletions
diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index 2696ffcba880..484cad31da25 100644 --- a/sound/soc/qcom/Kconfig +++ b/sound/soc/qcom/Kconfig @@ -127,4 +127,15 @@ config SND_SOC_SDM845 SDM845 SoC-based systems. Say Y if you want to use audio device on this SoCs. +config SND_SOC_SM8250 + tristate "SoC Machine driver for SM8250 boards" + depends on QCOM_APR && SOUNDWIRE + depends on COMMON_CLK + select SND_SOC_QDSP6 + select SND_SOC_QCOM_COMMON + help + To add support for audio on Qualcomm Technologies Inc. + SM8250 SoC-based systems. + Say Y if you want to use audio device on this SoCs. + endif #SND_SOC_QCOM diff --git a/sound/soc/qcom/Makefile b/sound/soc/qcom/Makefile index 0bd90d74e3db..effa4b3f58fa 100644 --- a/sound/soc/qcom/Makefile +++ b/sound/soc/qcom/Makefile @@ -19,12 +19,14 @@ snd-soc-storm-objs := storm.o snd-soc-apq8016-sbc-objs := apq8016_sbc.o snd-soc-apq8096-objs := apq8096.o snd-soc-sdm845-objs := sdm845.o +snd-soc-sm8250-objs := sm8250.o snd-soc-qcom-common-objs := common.o obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o obj-$(CONFIG_SND_SOC_MSM8996) += snd-soc-apq8096.o obj-$(CONFIG_SND_SOC_SDM845) += snd-soc-sdm845.o +obj-$(CONFIG_SND_SOC_SM8250) += snd-soc-sm8250.o obj-$(CONFIG_SND_SOC_QCOM_COMMON) += snd-soc-qcom-common.o #DSP lib diff --git a/sound/soc/qcom/sm8250.c b/sound/soc/qcom/sm8250.c new file mode 100644 index 000000000000..7d43de6d909f --- /dev/null +++ b/sound/soc/qcom/sm8250.c @@ -0,0 +1,228 @@ +// 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 "qdsp6/q6afe.h" +#include "common.h" + +#define DRIVER_NAME "sm8250" +#define MI2S_BCLK_RATE 1536000 +#define MAX_SDW_STREAMS 16 + +struct sm8250_snd_data { + bool stream_prepared[MAX_SDW_STREAMS]; + struct snd_soc_card *card; + struct sdw_stream_runtime *sruntime[MAX_SDW_STREAMS]; +}; + +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 codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS; + 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_dai_set_sysclk(cpu_dai, + Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT, + MI2S_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); + 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 *codec_dai; + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card); + struct sdw_stream_runtime *sruntime; + int i; + + switch (cpu_dai->id) { + case WSA_CODEC_DMA_RX_0: + for_each_rtd_codec_dais(rtd, i, codec_dai) { + sruntime = snd_soc_dai_get_sdw_stream(codec_dai, + substream->stream); + if (sruntime != ERR_PTR(-ENOTSUPP)) + pdata->sruntime[cpu_dai->id] = sruntime; + } + break; + } + + return 0; + +} + +static int sm8250_snd_wsa_dma_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]; + int ret; + + if (!sruntime) + return 0; + + if (data->stream_prepared[cpu_dai->id]) { + sdw_disable_stream(sruntime); + sdw_deprepare_stream(sruntime); + data->stream_prepared[cpu_dai->id] = false; + } + + ret = sdw_prepare_stream(sruntime); + if (ret) + return ret; + + /** + * NOTE: there is a strict hw requirement about the ordering of port + * enables and actual WSA881x PA enable. PA enable should only happen + * after soundwire ports are enabled if not DC on the line is + * accumulated resulting in Click/Pop Noise + * PA enable/mute are handled as part of codec DAPM and digital mute. + */ + + ret = sdw_enable_stream(sruntime); + if (ret) { + sdw_deprepare_stream(sruntime); + return ret; + } + data->stream_prepared[cpu_dai->id] = true; + + return ret; +} + +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); + + switch (cpu_dai->id) { + case WSA_CODEC_DMA_RX_0: + case WSA_CODEC_DMA_RX_1: + return sm8250_snd_wsa_dma_prepare(substream); + default: + break; + } + + return 0; +} + +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]; + + switch (cpu_dai->id) { + case WSA_CODEC_DMA_RX_0: + case WSA_CODEC_DMA_RX_1: + if (sruntime && data->stream_prepared[cpu_dai->id]) { + sdw_disable_stream(sruntime); + sdw_deprepare_stream(sruntime); + data->stream_prepared[cpu_dai->id] = false; + } + break; + default: + break; + } + + return 0; +} + +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->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; + + /* 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,sdm8250"}, + {.compatible = "qcom,qrb5165-rb5"}, + {} +}; + +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"); |