diff options
Diffstat (limited to 'sound/soc/intel/boards/bytcht_cx2072x.c')
| -rw-r--r-- | sound/soc/intel/boards/bytcht_cx2072x.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/sound/soc/intel/boards/bytcht_cx2072x.c b/sound/soc/intel/boards/bytcht_cx2072x.c new file mode 100644 index 000000000000..54ac2fd41925 --- /dev/null +++ b/sound/soc/intel/boards/bytcht_cx2072x.c @@ -0,0 +1,270 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with +// CX2072X codec +// + +#include <linux/acpi.h> +#include <linux/device.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/jack.h> +#include <sound/soc.h> +#include <sound/soc-acpi.h> +#include "../../codecs/cx2072x.h" +#include "../atom/sst-atom-controls.h" + +static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = { + SND_SOC_DAPM_HP("Headphone", NULL), + SND_SOC_DAPM_MIC("Headset Mic", NULL), + SND_SOC_DAPM_MIC("Int Mic", NULL), + SND_SOC_DAPM_SPK("Ext Spk", NULL), +}; + +static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = { + /* External Speakers: HFL, HFR */ + {"Headphone", NULL, "PORTA"}, + {"Ext Spk", NULL, "PORTG"}, + {"PORTC", NULL, "Int Mic"}, + {"PORTD", NULL, "Headset Mic"}, + + {"Playback", NULL, "ssp2 Tx"}, + {"ssp2 Tx", NULL, "codec_out0"}, + {"ssp2 Tx", NULL, "codec_out1"}, + {"codec_in0", NULL, "ssp2 Rx"}, + {"codec_in1", NULL, "ssp2 Rx"}, + {"ssp2 Rx", NULL, "Capture"}, +}; + +static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = { + SOC_DAPM_PIN_SWITCH("Headphone"), + SOC_DAPM_PIN_SWITCH("Headset Mic"), + SOC_DAPM_PIN_SWITCH("Int Mic"), + SOC_DAPM_PIN_SWITCH("Ext Spk"), +}; + +static struct snd_soc_jack byt_cht_cx2072x_headset; + +/* Headset jack detection DAPM pins */ +static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = { + { + .pin = "Headset Mic", + .mask = SND_JACK_MICROPHONE, + }, + { + .pin = "Headphone", + .mask = SND_JACK_HEADPHONE, + }, +}; + +static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios; +static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = { + { "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 }, + {}, +}; + +static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_card *card = rtd->card; + struct snd_soc_component *codec = rtd->codec_dai->component; + int ret; + + if (devm_acpi_dev_add_driver_gpios(codec->dev, + byt_cht_cx2072x_acpi_gpios)) + dev_warn(rtd->dev, "Unable to add GPIO mapping table\n"); + + card->dapm.idle_bias_off = true; + + /* set the default PLL rate, the clock is handled by the codec driver */ + ret = snd_soc_dai_set_sysclk(rtd->codec_dai, CX2072X_MCLK_EXTERNAL_PLL, + 19200000, SND_SOC_CLOCK_IN); + if (ret) { + dev_err(rtd->dev, "Could not set sysclk\n"); + return ret; + } + + ret = snd_soc_card_jack_new(card, "Headset", + SND_JACK_HEADSET | SND_JACK_BTN_0, + &byt_cht_cx2072x_headset, + byt_cht_cx2072x_headset_pins, + ARRAY_SIZE(byt_cht_cx2072x_headset_pins)); + if (ret) + return ret; + + snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL); + + snd_soc_dai_set_bclk_ratio(rtd->codec_dai, 50); + + return ret; +} + +static int byt_cht_cx2072x_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_NF | + 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 int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream) +{ + return snd_pcm_hw_constraint_single(substream->runtime, + SNDRV_PCM_HW_PARAM_RATE, 48000); +} + +static struct snd_soc_ops byt_cht_cx2072x_aif1_ops = { + .startup = byt_cht_cx2072x_aif1_startup, +}; + +SND_SOC_DAILINK_DEF(dummy, + DAILINK_COMP_ARRAY(COMP_DUMMY())); + +SND_SOC_DAILINK_DEF(media, + DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai"))); + +SND_SOC_DAILINK_DEF(deepbuffer, + DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai"))); + +SND_SOC_DAILINK_DEF(ssp2, + DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port"))); + +SND_SOC_DAILINK_DEF(cx2072x, + DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi"))); + +SND_SOC_DAILINK_DEF(platform, + DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform"))); + +static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = { + [MERR_DPCM_AUDIO] = { + .name = "Audio Port", + .stream_name = "Audio", + .nonatomic = true, + .dynamic = 1, + .dpcm_playback = 1, + .dpcm_capture = 1, + .ops = &byt_cht_cx2072x_aif1_ops, + SND_SOC_DAILINK_REG(media, dummy, platform), + }, + [MERR_DPCM_DEEP_BUFFER] = { + .name = "Deep-Buffer Audio Port", + .stream_name = "Deep-Buffer Audio", + .nonatomic = true, + .dynamic = 1, + .dpcm_playback = 1, + .ops = &byt_cht_cx2072x_aif1_ops, + SND_SOC_DAILINK_REG(deepbuffer, dummy, platform), + }, + /* back ends */ + { + .name = "SSP2-Codec", + .id = 0, + .no_pcm = 1, + .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF + | SND_SOC_DAIFMT_CBS_CFS, + .init = byt_cht_cx2072x_init, + .be_hw_params_fixup = byt_cht_cx2072x_fixup, + .nonatomic = true, + .dpcm_playback = 1, + .dpcm_capture = 1, + SND_SOC_DAILINK_REG(ssp2, cx2072x, platform), + }, +}; + +/* SoC card */ +static struct snd_soc_card byt_cht_cx2072x_card = { + .name = "bytcht-cx2072x", + .owner = THIS_MODULE, + .dai_link = byt_cht_cx2072x_dais, + .num_links = ARRAY_SIZE(byt_cht_cx2072x_dais), + .dapm_widgets = byt_cht_cx2072x_widgets, + .num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets), + .dapm_routes = byt_cht_cx2072x_audio_map, + .num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map), + .controls = byt_cht_cx2072x_controls, + .num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls), +}; + +static char codec_name[SND_ACPI_I2C_ID_LEN]; + +static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev) +{ + struct snd_soc_acpi_mach *mach; + struct acpi_device *adev; + int dai_index = 0; + int i, ret; + + byt_cht_cx2072x_card.dev = &pdev->dev; + mach = dev_get_platdata(&pdev->dev); + + /* fix index of codec dai */ + for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) { + if (!strcmp(byt_cht_cx2072x_dais[i].codecs->name, + "i2c-14F10720:00")) { + dai_index = i; + break; + } + } + + /* fixup codec name based on HID */ + adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1); + if (adev) { + snprintf(codec_name, sizeof(codec_name), "i2c-%s", + acpi_dev_name(adev)); + put_device(&adev->dev); + byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name; + } + + /* override plaform name, if required */ + ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card, + mach->mach_params.platform); + if (ret) + return ret; + + return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card); +} + +static struct platform_driver snd_byt_cht_cx2072x_driver = { + .driver = { + .name = "bytcht_cx2072x", + }, + .probe = snd_byt_cht_cx2072x_probe, +}; +module_platform_driver(snd_byt_cht_cx2072x_driver); + +MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:bytcht_cx2072x"); |