Add a dummy transmitter driver for StarFive JH7110 PWM-DAC module. StarFive JH7110 PWM-DAC controller uses this driver.
Signed-off-by: Hal Feng hal.feng@starfivetech.com --- sound/soc/codecs/Kconfig | 4 ++ sound/soc/codecs/Makefile | 2 + sound/soc/codecs/jh7110_pwmdac_transmitter.c | 74 ++++++++++++++++++++ 3 files changed, 80 insertions(+) create mode 100644 sound/soc/codecs/jh7110_pwmdac_transmitter.c
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 8020097d4e4c..f2cd8f999649 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -115,6 +115,7 @@ config SND_SOC_ALL_CODECS imply SND_SOC_IDT821034 imply SND_SOC_INNO_RK3036 imply SND_SOC_ISABELLE + imply SND_SOC_JH7110_PWMDAC_DIT imply SND_SOC_JZ4740_CODEC imply SND_SOC_JZ4725B_CODEC imply SND_SOC_JZ4760_CODEC @@ -903,6 +904,9 @@ config SND_SOC_CX2072X help Enable support for Conexant CX20721 and CX20723 codec chips.
+config SND_SOC_JH7110_PWMDAC_DIT + tristate "StarFive JH7110 dummy PWM-DAC transmitter" + config SND_SOC_JZ4740_CODEC depends on MACH_INGENIC || COMPILE_TEST depends on OF diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 5cdbae88e6e3..8e0e12d7b959 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -122,6 +122,7 @@ snd-soc-ics43432-objs := ics43432.o snd-soc-idt821034-objs := idt821034.o snd-soc-inno-rk3036-objs := inno_rk3036.o snd-soc-isabelle-objs := isabelle.o +snd-soc-jh7110-pwmdac-dit-objs := jh7110_pwmdac_transmitter.o snd-soc-jz4740-codec-objs := jz4740.o snd-soc-jz4725b-codec-objs := jz4725b.o snd-soc-jz4760-codec-objs := jz4760.o @@ -496,6 +497,7 @@ obj-$(CONFIG_SND_SOC_ICS43432) += snd-soc-ics43432.o obj-$(CONFIG_SND_SOC_IDT821034) += snd-soc-idt821034.o obj-$(CONFIG_SND_SOC_INNO_RK3036) += snd-soc-inno-rk3036.o obj-$(CONFIG_SND_SOC_ISABELLE) += snd-soc-isabelle.o +obj-$(CONFIG_SND_SOC_JH7110_PWMDAC_DIT) += snd-soc-jh7110-pwmdac-dit.o obj-$(CONFIG_SND_SOC_JZ4740_CODEC) += snd-soc-jz4740-codec.o obj-$(CONFIG_SND_SOC_JZ4725B_CODEC) += snd-soc-jz4725b-codec.o obj-$(CONFIG_SND_SOC_JZ4760_CODEC) += snd-soc-jz4760-codec.o diff --git a/sound/soc/codecs/jh7110_pwmdac_transmitter.c b/sound/soc/codecs/jh7110_pwmdac_transmitter.c new file mode 100644 index 000000000000..69077be840c7 --- /dev/null +++ b/sound/soc/codecs/jh7110_pwmdac_transmitter.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Dummy PWM-DAC transmitter driver for the StarFive JH7110 SoC + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/of.h> +#include <linux/slab.h> +#include <sound/initval.h> +#include <sound/pcm.h> +#include <sound/soc.h> + +#define DRV_NAME "pwmdac-dit" + +static const struct snd_soc_dapm_widget dit_widgets[] = { + SND_SOC_DAPM_OUTPUT("pwmdac-out"), +}; + +static const struct snd_soc_dapm_route dit_routes[] = { + { "pwmdac-out", NULL, "Playback" }, +}; + +static const struct snd_soc_component_driver soc_codec_pwmdac_dit = { + .dapm_widgets = dit_widgets, + .num_dapm_widgets = ARRAY_SIZE(dit_widgets), + .dapm_routes = dit_routes, + .num_dapm_routes = ARRAY_SIZE(dit_routes), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, +}; + +static struct snd_soc_dai_driver dit_stub_dai = { + .name = "pwmdac-dit-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 384, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, +}; + +static int pwmdac_dit_probe(struct platform_device *pdev) +{ + return devm_snd_soc_register_component(&pdev->dev, + &soc_codec_pwmdac_dit, + &dit_stub_dai, 1); +} + +#ifdef CONFIG_OF +static const struct of_device_id pwmdac_dit_dt_ids[] = { + { .compatible = "starfive,jh7110-pwmdac-dit", }, + { } +}; +MODULE_DEVICE_TABLE(of, pwmdac_dit_dt_ids); +#endif + +static struct platform_driver pwmdac_dit_driver = { + .probe = pwmdac_dit_probe, + .driver = { + .name = DRV_NAME, + .of_match_table = of_match_ptr(pwmdac_dit_dt_ids), + }, +}; + +module_platform_driver(pwmdac_dit_driver); + +MODULE_DESCRIPTION("StarFive JH7110 dummy PWM-DAC transmitter driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME);