Add KeemBay machine driver which glues the tlv320aic3204 codec driver and kmb_platform driver to form the asoc sound driver.
Signed-off-by: Michael Sit Wei Hong michael.wei.hong.sit@intel.com Signed-off-by: Sia Jee Heng jee.heng.sia@intel.com --- sound/soc/intel/boards/kmb_tlv3204.c | 144 +++++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 sound/soc/intel/boards/kmb_tlv3204.c
diff --git a/sound/soc/intel/boards/kmb_tlv3204.c b/sound/soc/intel/boards/kmb_tlv3204.c new file mode 100644 index 0000000..813c291 --- /dev/null +++ b/sound/soc/intel/boards/kmb_tlv3204.c @@ -0,0 +1,144 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* KeemBay ASOC Machine driver + * + * Copyright (C) 2020 Intel Corporation. + * + */ + +#include <linux/module.h> +#include <sound/dmaengine_pcm.h> +#include <sound/soc.h> +#include "../../codecs/tlv320aic32x4.h" + +static unsigned int channels[] = { + 2, +}; + +static struct snd_pcm_hw_constraint_list constraints_ch = { + .count = ARRAY_SIZE(channels), + .list = channels, +}; + +static unsigned int rates[] = { + 16000, + 48000, +}; + +static struct snd_pcm_hw_constraint_list constraints_rates = { + .count = ARRAY_SIZE(rates), + .list = rates, +}; + +static int kmb_mach_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 = asoc_rtd_to_codec(rtd, 0); + int ret; + unsigned int sysclk; + + /* As per codec datasheet Sysclk = 256 * fs */ + sysclk = 12288000; + + /* set the codec system clock */ + ret = snd_soc_dai_set_sysclk(codec_dai, 1, sysclk, SND_SOC_CLOCK_IN); + if (ret < 0) + dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", ret); + + return ret; +} + +static int kmb_mach_dai_link_startup(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *str_runtime; + + str_runtime = substream->runtime; + + snd_pcm_hw_constraint_list(str_runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + &constraints_ch); + + snd_pcm_hw_constraint_list(str_runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &constraints_rates); + + return 0; +} + +static const struct snd_soc_ops kmb_mach_dai_link_ops = { + .startup = kmb_mach_dai_link_startup, + .hw_params = kmb_mach_hw_params, +}; + +static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = { + SND_SOC_DAPM_MIC("External Mic", NULL), + SND_SOC_DAPM_HP("Headphone", NULL), +}; + +static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = { + {"Headphone", NULL, "HPL"}, + {"Headphone", NULL, "HPR"}, + {"IN3_R", NULL, "External Mic"}, + {"IN3_L", NULL, "External Mic"}, +}; + +/* Linking platform to the codec-drivers */ +SND_SOC_DAILINK_DEFS(link1, + DAILINK_COMP_ARRAY(COMP_CPU("20140000.i2s")), + DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic32x4.2-0018", + "tlv320aic32x4-hifi")), + DAILINK_COMP_ARRAY(COMP_PLATFORM("20140000.i2s"))); + +/* kmb digital audio interface glue */ +static struct snd_soc_dai_link kmb_mach_dais[] = { + { + .name = "tlv320aic32x4", + .stream_name = "TLV320AIC32X4", + .ops = &kmb_mach_dai_link_ops, + .dai_fmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS, + SND_SOC_DAILINK_REG(link1), + }, +}; + +/* kmb audio machine driver */ +static struct snd_soc_card kmb_mach = { + .name = "kmb_audio_card", + .dai_link = kmb_mach_dais, + .num_links = ARRAY_SIZE(kmb_mach_dais), + .dapm_routes = aic32x4_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes), + .dapm_widgets = aic32x4_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets), + .fully_routed = true, +}; + +static int kmb_mach_audio_probe(struct platform_device *pdev) +{ + kmb_mach.dev = &pdev->dev; + + return devm_snd_soc_register_card(&pdev->dev, &kmb_mach); +} + +static const struct of_device_id kmb_mach_of_match[] = { + { .compatible = "intel,kmb-snd-asoc", }, + {} +}; + +static struct platform_driver kmb_mach_audio = { + .probe = kmb_mach_audio_probe, + .driver = { + .name = "kmb_tlv3204", + .of_match_table = kmb_mach_of_match, + }, +}; + +module_platform_driver(kmb_mach_audio) + +/* Module information */ +MODULE_DESCRIPTION("Intel Audio tlv3204 machine driver for KeemBay"); +MODULE_AUTHOR("Sia Jee Heng jee.heng.sia@intel.com"); +MODULE_AUTHOR("Sit, Michael Wei Hong michael.wei.hong.sit@intel.com"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:kmb_tlv3204");