The es7134 is 24bit, 192Khz i2s DA converter for PCM audio. Datasheet is available here : http://www.everest-semi.com/pdf/ES7134LV%20DS.pdf
This driver is also compatible with the es7144, which is the same as the es7134, with 2 additional pins for filtering capacitors.
Signed-off-by: Jerome Brunet jbrunet@baylibre.com --- sound/soc/codecs/Kconfig | 4 ++ sound/soc/codecs/Makefile | 2 + sound/soc/codecs/es7134.c | 116 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 122 insertions(+) create mode 100644 sound/soc/codecs/es7134.c
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index e49e9da7f1f6..7c7c2e96b836 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -72,6 +72,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_DMIC select SND_SOC_ES8328_SPI if SPI_MASTER select SND_SOC_ES8328_I2C if I2C + select SND_SOC_ES7134 select SND_SOC_GTM601 select SND_SOC_HDAC_HDMI select SND_SOC_ICS43432 @@ -525,6 +526,9 @@ config SND_SOC_HDMI_CODEC select SND_PCM_IEC958 select HDMI
+config SND_SOC_ES7134 + tristate "Everest Semi ES7134 CODEC" + config SND_SOC_ES8328 tristate
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 1796cb987e71..b65868c963c9 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -63,6 +63,7 @@ snd-soc-da7219-objs := da7219.o da7219-aad.o snd-soc-da732x-objs := da732x.o snd-soc-da9055-objs := da9055.o snd-soc-dmic-objs := dmic.o +snd-soc-es7134-objs := es7134.o snd-soc-es8328-objs := es8328.o snd-soc-es8328-i2c-objs := es8328-i2c.o snd-soc-es8328-spi-objs := es8328-spi.o @@ -293,6 +294,7 @@ obj-$(CONFIG_SND_SOC_DA7219) += snd-soc-da7219.o obj-$(CONFIG_SND_SOC_DA732X) += snd-soc-da732x.o obj-$(CONFIG_SND_SOC_DA9055) += snd-soc-da9055.o obj-$(CONFIG_SND_SOC_DMIC) += snd-soc-dmic.o +obj-$(CONFIG_SND_SOC_ES7134) += snd-soc-es7134.o obj-$(CONFIG_SND_SOC_ES8328) += snd-soc-es8328.o obj-$(CONFIG_SND_SOC_ES8328_I2C)+= snd-soc-es8328-i2c.o obj-$(CONFIG_SND_SOC_ES8328_SPI)+= snd-soc-es8328-spi.o diff --git a/sound/soc/codecs/es7134.c b/sound/soc/codecs/es7134.c new file mode 100644 index 000000000000..25ede825d349 --- /dev/null +++ b/sound/soc/codecs/es7134.c @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2017 BayLibre, SAS. + * Author: Jerome Brunet jbrunet@baylibre.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see http://www.gnu.org/licenses/. + * The full GNU General Public License is included in this distribution + * in the file called COPYING. + */ + +#include <linux/module.h> +#include <sound/soc.h> + +/* + * The everest 7134 is a very simple DA converter with no register + */ + +static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) +{ + fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK | + SND_SOC_DAIFMT_MASTER_MASK); + + if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBS_CFS)) { + dev_err(codec_dai->dev, "Invalid DAI format\n"); + return -EINVAL; + } + + return 0; +} + +static const struct snd_soc_dai_ops es7134_dai_ops = { + .set_fmt = es7134_set_fmt, +}; + +static struct snd_soc_dai_driver es7134_dai = { + .name = "es7134-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = (SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S18_3LE | + SNDRV_PCM_FMTBIT_S20_3LE | + SNDRV_PCM_FMTBIT_S24_3LE | + SNDRV_PCM_FMTBIT_S24_LE), + }, + .ops = &es7134_dai_ops, +}; + +static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = { + SND_SOC_DAPM_OUTPUT("AOUTL"), + SND_SOC_DAPM_OUTPUT("AOUTR"), + SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0), +}; + +static const struct snd_soc_dapm_route es7134_dapm_routes[] = { + { "AOUTL", NULL, "DAC" }, + { "AOUTR", NULL, "DAC" }, +}; + +static struct snd_soc_codec_driver es7134_codec_driver = { + .component_driver = { + .dapm_widgets = es7134_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets), + .dapm_routes = es7134_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes), + }, +}; + +static int es7134_probe(struct platform_device *pdev) +{ + return snd_soc_register_codec(&pdev->dev, + &es7134_codec_driver, + &es7134_dai, 1); +} + +static int es7134_remove(struct platform_device *pdev) +{ + snd_soc_unregister_codec(&pdev->dev); + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id es7134_ids[] = { + { .compatible = "everest,es7134", }, + { .compatible = "everest,es7144", }, + { } +}; +MODULE_DEVICE_TABLE(of, es7134_ids); +#endif + +static struct platform_driver es7134_driver = { + .driver = { + .name = "es7134", + .of_match_table = of_match_ptr(es7134_ids), + }, + .probe = es7134_probe, + .remove = es7134_remove, +}; + +module_platform_driver(es7134_driver); + +MODULE_DESCRIPTION("ASoC ES7134 audio codec driver"); +MODULE_AUTHOR("Jerome Brunet jbrunet@baylibre.com"); +MODULE_LICENSE("GPL");