The UDA1334BTS supports the I2S-bus data format with word lengths of up to 24 bits serial data format and has basic features such as de-emphasis (at 44.1 kHz sampling rate) and mute. Datasheet can be found at: https://www.nxp.com/docs/en/data-sheet/UDA1334BTS.pdf Cc: Daniel Baluta <daniel.baluta@xxxxxxx> Signed-off-by: Andra Danciu <andradanciu1997@xxxxxxxxx> --- sound/soc/codecs/Kconfig | 9 ++ sound/soc/codecs/Makefile | 2 + sound/soc/codecs/uda1334.c | 295 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 306 insertions(+) create mode 100644 sound/soc/codecs/uda1334.c diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index da4c1ae89742..89238343e34d 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -199,6 +199,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_TS3A227E if I2C select SND_SOC_TWL4030 if TWL4030_CORE select SND_SOC_TWL6040 if TWL6040_CORE + select SND_SOC_UDA1334 if GPIOLIB select SND_SOC_UDA134X select SND_SOC_UDA1380 if I2C select SND_SOC_WCD9335 if SLIMBUS @@ -1207,6 +1208,14 @@ config SND_SOC_TWL4030 config SND_SOC_TWL6040 tristate +config SND_SOC_UDA1334 + tristate "NXP UDA1334 DAC" + depends on GPIOLIB + help + The UDA1334 is an NXP audio codec, supports the I2S-bus data format + and has basic features such as de-emphasis (at 44.1 kHz sampling + rate) and mute. + config SND_SOC_UDA134X tristate diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 9230016b0f9f..c498373dcc5f 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -212,6 +212,7 @@ snd-soc-tscs454-objs := tscs454.o snd-soc-ts3a227e-objs := ts3a227e.o snd-soc-twl4030-objs := twl4030.o snd-soc-twl6040-objs := twl6040.o +snd-soc-uda1334-objs := uda1334.o snd-soc-uda134x-objs := uda134x.o snd-soc-uda1380-objs := uda1380.o snd-soc-wcd9335-objs := wcd-clsh-v2.o wcd9335.o @@ -494,6 +495,7 @@ obj-$(CONFIG_SND_SOC_TSCS454) += snd-soc-tscs454.o obj-$(CONFIG_SND_SOC_TS3A227E) += snd-soc-ts3a227e.o obj-$(CONFIG_SND_SOC_TWL4030) += snd-soc-twl4030.o obj-$(CONFIG_SND_SOC_TWL6040) += snd-soc-twl6040.o +obj-$(CONFIG_SND_SOC_UDA1334) += snd-soc-uda1334.o obj-$(CONFIG_SND_SOC_UDA134X) += snd-soc-uda134x.o obj-$(CONFIG_SND_SOC_UDA1380) += snd-soc-uda1380.o obj-$(CONFIG_SND_SOC_WCD9335) += snd-soc-wcd9335.o diff --git a/sound/soc/codecs/uda1334.c b/sound/soc/codecs/uda1334.c new file mode 100644 index 000000000000..21ab8c5487ba --- /dev/null +++ b/sound/soc/codecs/uda1334.c @@ -0,0 +1,295 @@ +// SPDX-License-Identifier: GPL-2.0-only +// +// uda1334.c -- UDA1334 ALSA SoC Audio driver +// +// Based on WM8523 ALSA SoC Audio driver written by Mark Brown + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/gpio/consumer.h> +#include <linux/of_device.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/initval.h> + +#define UDA1334_NUM_RATES 6 + +/* codec private data */ +struct uda1334_priv { + struct gpio_desc *mute; + struct gpio_desc *deemph; + unsigned int sysclk; + unsigned int rate_constraint_list[UDA1334_NUM_RATES]; + struct snd_pcm_hw_constraint_list rate_constraint; +}; + +static const struct snd_soc_dapm_widget uda1334_dapm_widgets[] = { +SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0), +SND_SOC_DAPM_OUTPUT("LINEVOUTL"), +SND_SOC_DAPM_OUTPUT("LINEVOUTR"), +}; + +static const struct snd_soc_dapm_route uda1334_dapm_routes[] = { + { "LINEVOUTL", NULL, "DAC" }, + { "LINEVOUTR", NULL, "DAC" }, +}; + +static int uda1334_put_deemph(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component); + int deemph = ucontrol->value.integer.value[0]; + + if (deemph > 1) + return -EINVAL; + + gpiod_set_value_cansleep(uda1334->deemph, deemph); + + return 0; +}; + +static int uda1334_get_deemph(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component); + int ret; + + ret = gpiod_get_value_cansleep(uda1334->deemph); + if (ret < 0) + return -EINVAL; + + ucontrol->value.integer.value[0] = ret; + + return 0; +}; + +static const struct snd_kcontrol_new uda1334_snd_controls[] = { + SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0, + uda1334_get_deemph, uda1334_put_deemph), +}; + +static const struct { + int value; + int ratio; +} lrclk_ratios[UDA1334_NUM_RATES] = { + { 1, 128 }, + { 2, 192 }, + { 3, 256 }, + { 4, 384 }, + { 5, 512 }, + { 6, 768 }, +}; + +static int uda1334_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component); + + /* + * The set of sample rates that can be supported depends on the + * MCLK supplied to the CODEC - enforce this. + */ + if (!uda1334->sysclk) { + dev_err(component->dev, + "No MCLK configured, call set_sysclk() on init\n"); + return -EINVAL; + } + + snd_pcm_hw_constraint_list(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &uda1334->rate_constraint); + + gpiod_set_value_cansleep(uda1334->mute, 1); + + return 0; +} + +static void uda1334_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component); + + gpiod_set_value_cansleep(uda1334->mute, 0); +} + +static int uda1334_set_dai_sysclk(struct snd_soc_dai *codec_dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_component *component = codec_dai->component; + struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component); + unsigned int val; + int i, j = 0; + + uda1334->sysclk = freq; + + uda1334->rate_constraint.count = 0; + for (i = 0; i < ARRAY_SIZE(lrclk_ratios); i++) { + val = freq / lrclk_ratios[i].ratio; + /* + * Check that it's a standard rate since core can't + * cope with others and having the odd rates confuses + * constraint matching. + */ + + switch (val) { + case 8000: + case 32000: + case 44100: + case 48000: + case 64000: + case 88200: + case 96000: + dev_dbg(component->dev, "Supported sample rate: %dHz\n", + val); + uda1334->rate_constraint_list[j++] = val; + uda1334->rate_constraint.count++; + break; + default: + dev_dbg(component->dev, "Skipping sample rate: %dHz\n", + val); + } + } + + /* Need at least one supported rate... */ + if (uda1334->rate_constraint.count == 0) + return -EINVAL; + + return 0; +} + +static int uda1334_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 int uda1334_mute_stream(struct snd_soc_dai *dai, int mute, int stream) +{ + struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(dai->component); + + if (uda1334->mute) + gpiod_set_value_cansleep(uda1334->mute, mute); + + return 0; +} + +#define UDA1334_RATES SNDRV_PCM_RATE_8000_96000 + +#define UDA1334_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE) + +static const struct snd_soc_dai_ops uda1334_dai_ops = { + .startup = uda1334_startup, + .shutdown = uda1334_shutdown, + .set_sysclk = uda1334_set_dai_sysclk, + .set_fmt = uda1334_set_fmt, + .mute_stream = uda1334_mute_stream, +}; + +static struct snd_soc_dai_driver uda1334_dai = { + .name = "uda1334-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = UDA1334_RATES, + .formats = UDA1334_FORMATS, + }, + .ops = &uda1334_dai_ops, +}; + +static int uda1334_probe(struct snd_soc_component *component) +{ + struct uda1334_priv *uda1334 = snd_soc_component_get_drvdata(component); + + uda1334->rate_constraint.list = &uda1334->rate_constraint_list[0]; + uda1334->rate_constraint.count = + ARRAY_SIZE(uda1334->rate_constraint_list); + + return 0; +} + +static const struct snd_soc_component_driver soc_component_dev_uda1334 = { + .probe = uda1334_probe, + .controls = uda1334_snd_controls, + .num_controls = ARRAY_SIZE(uda1334_snd_controls), + .dapm_widgets = uda1334_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(uda1334_dapm_widgets), + .dapm_routes = uda1334_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(uda1334_dapm_routes), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, + .non_legacy_dai_naming = 1, +}; + +static const struct of_device_id uda1334_of_match[] = { + { .compatible = "nxp,uda1334" }, + { /* sentinel*/ } +}; +MODULE_DEVICE_TABLE(of, uda1334_of_match); + +static int uda1334_codec_probe(struct platform_device *pdev) +{ + struct uda1334_priv *uda1334; + int ret; + + uda1334 = devm_kzalloc(&pdev->dev, sizeof(struct uda1334_priv), + GFP_KERNEL); + if (!uda1334) + return -ENOMEM; + + platform_set_drvdata(pdev, uda1334); + + uda1334->mute = devm_gpiod_get(&pdev->dev, "nxp,mute", GPIOD_OUT_LOW); + if (IS_ERR(uda1334->mute)) { + ret = PTR_ERR(uda1334->mute); + dev_err(&pdev->dev, "Failed to get mute line: %d\n", ret); + return ret; + } + + uda1334->deemph = devm_gpiod_get(&pdev->dev, "nxp,deemph", GPIOD_OUT_LOW); + if (IS_ERR(uda1334->deemph)) { + ret = PTR_ERR(uda1334->deemph); + dev_err(&pdev->dev, "Failed to get deemph line: %d\n", ret); + return ret; + } + + ret = devm_snd_soc_register_component(&pdev->dev, + &soc_component_dev_uda1334, + &uda1334_dai, 1); + if (ret < 0) + dev_err(&pdev->dev, "Failed to register component: %d\n", ret); + + return ret; +} + +static struct platform_driver uda1334_codec_driver = { + .probe = uda1334_codec_probe, + .driver = { + .name = "uda1334-codec", + .of_match_table = uda1334_of_match, + }, +}; +module_platform_driver(uda1334_codec_driver); + +MODULE_DESCRIPTION("ASoC UDA1334 driver"); +MODULE_AUTHOR("Andra Danciu <andradanciu1997@xxxxxxxxx>"); +MODULE_ALIAS("platform:uda1334-codec"); +MODULE_LICENSE("GPL v2"); -- 2.11.0
