Add card with dummy codec and DAI to make I2S signals observable. Uses Mic and Speaker pins/widgets to control DAPM
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- sound/soc/intel/Kconfig | 12 ++ sound/soc/intel/boards/Makefile | 2 + sound/soc/intel/boards/bytcr_nocodec.c | 233 +++++++++++++++++++++++++++++++++ 3 files changed, 247 insertions(+) create mode 100644 sound/soc/intel/boards/bytcr_nocodec.c
diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig index 0430e2d..12421c2 100644 --- a/sound/soc/intel/Kconfig +++ b/sound/soc/intel/Kconfig @@ -115,6 +115,18 @@ config SND_SOC_INTEL_BYTCR_RT5651_MACH Say Y if you have such a device If unsure select "N".
+config SND_SOC_INTEL_BYTCR_NOCODEC_MACH + tristate "ASoC Audio driver for Intel Baytrail and Baytrail-CR with no codec (MinnowBoard MAX)" + depends on X86 && I2C + select SND_SST_MFLD_PLATFORM + select SND_SST_IPC_ACPI + help + This adds support for ASoC machine driver for the MinnowBoard Max + and provides access to I2S signals on the Low-Speed connector + Say Y if you have such a device + If unsure select "N". + + config SND_SOC_INTEL_CHT_BSW_RT5672_MACH tristate "ASoC Audio driver for Intel Cherrytrail & Braswell with RT5672 codec" depends on X86_INTEL_LPSS && I2C diff --git a/sound/soc/intel/boards/Makefile b/sound/soc/intel/boards/Makefile index 64e4181..c7bf041 100644 --- a/sound/soc/intel/boards/Makefile +++ b/sound/soc/intel/boards/Makefile @@ -4,6 +4,7 @@ snd-soc-sst-byt-max98090-mach-objs := byt-max98090.o snd-soc-sst-broadwell-objs := broadwell.o snd-soc-sst-bytcr-rt5640-objs := bytcr_rt5640.o snd-soc-sst-bytcr-rt5651-objs := bytcr_rt5651.o +snd-soc-sst-bytcr-nocodec-objs := bytcr_nocodec.o snd-soc-sst-cht-bsw-rt5672-objs := cht_bsw_rt5672.o snd-soc-sst-cht-bsw-rt5645-objs := cht_bsw_rt5645.o snd-soc-sst-cht-bsw-max98090_ti-objs := cht_bsw_max98090_ti.o @@ -16,6 +17,7 @@ obj-$(CONFIG_SND_SOC_INTEL_BYT_MAX98090_MACH) += snd-soc-sst-byt-max98090-mach.o obj-$(CONFIG_SND_SOC_INTEL_BROADWELL_MACH) += snd-soc-sst-broadwell.o obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5640_MACH) += snd-soc-sst-bytcr-rt5640.o obj-$(CONFIG_SND_SOC_INTEL_BYTCR_RT5651_MACH) += snd-soc-sst-bytcr-rt5651.o +obj-$(CONFIG_SND_SOC_INTEL_BYTCR_NOCODEC_MACH) += snd-soc-sst-bytcr-nocodec.o obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_RT5672_MACH) += snd-soc-sst-cht-bsw-rt5672.o obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_RT5645_MACH) += snd-soc-sst-cht-bsw-rt5645.o obj-$(CONFIG_SND_SOC_INTEL_CHT_BSW_MAX98090_TI_MACH) += snd-soc-sst-cht-bsw-max98090_ti.o diff --git a/sound/soc/intel/boards/bytcr_nocodec.c b/sound/soc/intel/boards/bytcr_nocodec.c new file mode 100644 index 0000000..4eef28f --- /dev/null +++ b/sound/soc/intel/boards/bytcr_nocodec.c @@ -0,0 +1,233 @@ +/* + * bytcr_nocodec.c - ASoc Machine driver for MinnowBoard + * to make I2S signals observable on the Low-Speed connector. Audio codec + * is not managed by ASoC/DAPM + * + * Copyright (C) 2015 Intel Corp + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/acpi.h> +#include <linux/device.h> +#include <linux/dmi.h> +#include <linux/slab.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/jack.h> +#include "../atom/sst-atom-controls.h" + + +static const struct snd_soc_dapm_widget byt_nocodec_widgets[] = { + SND_SOC_DAPM_MIC("Mic", NULL), + SND_SOC_DAPM_SPK("Speaker", NULL), +}; + +static const struct snd_soc_dapm_route byt_nocodec_audio_map[] = { + {"ssp2 Tx", NULL, "codec_out0"}, + {"ssp2 Tx", NULL, "codec_out1"}, + {"codec_in0", NULL, "ssp2 Rx"}, + {"codec_in1", NULL, "ssp2 Rx"}, + + {"ssp2 Rx", NULL, "Mic"}, + {"Speaker", NULL, "ssp2 Tx"}, +}; + +static const struct snd_kcontrol_new byt_nocodec_controls[] = { + SOC_DAPM_PIN_SWITCH("Mic"), + SOC_DAPM_PIN_SWITCH("Speaker"), +}; + +static int byt_nocodec_init(struct snd_soc_pcm_runtime *runtime) +{ + return 0; +} + +static const struct snd_soc_pcm_stream byt_nocodec_dai_params = { + .formats = SNDRV_PCM_FMTBIT_S24_LE, + .rate_min = 48000, + .rate_max = 48000, + .channels_min = 2, + .channels_max = 2, +}; + +static int byt_nocodec_codec_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); + int ret; + + /* The DSP will covert the FE rate to 48k, stereo, 24bits */ + rate->min = rate->max = 48000; + channels->min = channels->max = 2; + + /* set SSP2 to 24-bit */ + params_set_format(params, SNDRV_PCM_FORMAT_S24_LE); + + /* + * Default mode for SSP configuration is TDM 4 slot, override config + * with explicit setting to I2S 2ch 24-bit. The word length is set with + * dai_set_tdm_slot() since there is no other API exposed + */ + ret = snd_soc_dai_set_fmt(rtd->cpu_dai, + SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_IF | + SND_SOC_DAIFMT_CBS_CFS + ); + + if (ret < 0) { + dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret); + return ret; + } + + ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x3, 0x3, 2, 24); + if (ret < 0) { + dev_err(rtd->dev, "can't set I2S config, err %d\n", ret); + return ret; + } + + return 0; +} + +static unsigned int rates_48000[] = { + 48000, +}; + +static struct snd_pcm_hw_constraint_list constraints_48000 = { + .count = ARRAY_SIZE(rates_48000), + .list = rates_48000, +}; + +static int byt_nocodec_aif1_startup(struct snd_pcm_substream *substream) +{ + return snd_pcm_hw_constraint_list(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &constraints_48000); +} + +static struct snd_soc_ops byt_nocodec_aif1_ops = { + .startup = byt_nocodec_aif1_startup, +}; + +static struct snd_soc_dai_link byt_nocodec_dais[] = { + [MERR_DPCM_AUDIO] = { + .name = "Audio Port", + .stream_name = "Audio", + .cpu_dai_name = "media-cpu-dai", + .codec_dai_name = "snd-soc-dummy-dai", + .codec_name = "snd-soc-dummy", + .platform_name = "sst-mfld-platform", + .ignore_suspend = 1, + .nonatomic = true, + .dynamic = 1, + .dpcm_playback = 1, + .dpcm_capture = 1, + .ops = &byt_nocodec_aif1_ops, + }, + [MERR_DPCM_DEEP_BUFFER] = { + .name = "Deep-Buffer Audio Port", + .stream_name = "Deep-Buffer Audio", + .cpu_dai_name = "deepbuffer-cpu-dai", + .codec_dai_name = "snd-soc-dummy-dai", + .codec_name = "snd-soc-dummy", + .platform_name = "sst-mfld-platform", + .ignore_suspend = 1, + .nonatomic = true, + .dynamic = 1, + .dpcm_playback = 1, + .ops = &byt_nocodec_aif1_ops, + }, + [MERR_DPCM_COMPR] = { + .name = "Compressed Port", + .stream_name = "Compress", + .cpu_dai_name = "compress-cpu-dai", + .codec_dai_name = "snd-soc-dummy-dai", + .codec_name = "snd-soc-dummy", + .platform_name = "sst-mfld-platform", + }, + /* CODEC<->CODEC link */ + /* back ends */ + { + .name = "LowSpeed Connector", + .be_id = 1, + .cpu_dai_name = "ssp2-port", + .platform_name = "sst-mfld-platform", + .no_pcm = 1, + .codec_dai_name = "snd-soc-dummy-dai", + .codec_name = "snd-soc-dummy", + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF + | SND_SOC_DAIFMT_CBS_CFS, + .be_hw_params_fixup = byt_nocodec_codec_fixup, + .ignore_suspend = 1, + .nonatomic = true, + .dpcm_playback = 1, + .dpcm_capture = 1, + .init = byt_nocodec_init, + }, +}; + +/* SoC card */ +static struct snd_soc_card byt_nocodec_card = { + .name = "bytcr-nocodec", + .owner = THIS_MODULE, + .dai_link = byt_nocodec_dais, + .dapm_widgets = byt_nocodec_widgets, + .num_dapm_widgets = ARRAY_SIZE(byt_nocodec_widgets), + .num_links = ARRAY_SIZE(byt_nocodec_dais), + .dapm_routes = byt_nocodec_audio_map, + .num_dapm_routes = ARRAY_SIZE(byt_nocodec_audio_map), + .controls = byt_nocodec_controls, + .num_controls = ARRAY_SIZE(byt_nocodec_controls), + .fully_routed = true, +}; + +static int snd_byt_nocodec_mc_probe(struct platform_device *pdev) +{ + int ret_val = 0; + + /* register the soc card */ + byt_nocodec_card.dev = &pdev->dev; + + ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_nocodec_card); + + if (ret_val) { + dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n", + ret_val); + return ret_val; + } + platform_set_drvdata(pdev, &byt_nocodec_card); + return ret_val; +} + +static struct platform_driver snd_byt_nocodec_mc_driver = { + .driver = { + .name = "bytcr_nocodec", + .pm = &snd_soc_pm_ops, + }, + .probe = snd_byt_nocodec_mc_probe, +}; + +module_platform_driver(snd_byt_nocodec_mc_driver); + +MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Nocodec Machine driver"); +MODULE_AUTHOR("Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:bytcr_nocodec");