diff options
Diffstat (limited to 'sound/soc/codecs/ak4104.c')
| -rw-r--r-- | sound/soc/codecs/ak4104.c | 177 |
1 files changed, 104 insertions, 73 deletions
diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c index c7cfdf957e4d..a33cb329865c 100644 --- a/sound/soc/codecs/ak4104.c +++ b/sound/soc/codecs/ak4104.c @@ -1,23 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * AK4104 ALSA SoC (ASoC) driver * * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> - * - * 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; either version 2 of the License, or (at your - * option) any later version. */ +#include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/slab.h> +#include <linux/spi/spi.h> +#include <linux/gpio/consumer.h> +#include <linux/regulator/consumer.h> +#include <sound/asoundef.h> #include <sound/core.h> #include <sound/soc.h> #include <sound/initval.h> -#include <linux/spi/spi.h> -#include <linux/of_device.h> -#include <linux/of_gpio.h> -#include <sound/asoundef.h> /* AK4104 registers addresses */ #define AK4104_REG_CONTROL1 0x00 @@ -45,17 +42,27 @@ #define AK4104_TX_TXE (1 << 0) #define AK4104_TX_V (1 << 1) -#define DRV_NAME "ak4104-codec" - struct ak4104_private { struct regmap *regmap; + struct regulator *regulator; +}; + +static const struct snd_soc_dapm_widget ak4104_dapm_widgets[] = { +SND_SOC_DAPM_PGA("TXE", AK4104_REG_TX, AK4104_TX_TXE, 0, NULL, 0), + +SND_SOC_DAPM_OUTPUT("TX"), +}; + +static const struct snd_soc_dapm_route ak4104_dapm_routes[] = { + { "TXE", NULL, "Playback" }, + { "TX", NULL, "TXE" }, }; static int ak4104_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int format) { - struct snd_soc_codec *codec = codec_dai->codec; - struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); + struct snd_soc_component *component = codec_dai->component; + struct ak4104_private *ak4104 = snd_soc_component_get_drvdata(component); int val = 0; int ret; @@ -70,12 +77,12 @@ static int ak4104_set_dai_fmt(struct snd_soc_dai *codec_dai, val |= AK4104_CONTROL1_DIF0 | AK4104_CONTROL1_DIF1; break; default: - dev_err(codec->dev, "invalid dai format\n"); + dev_err(component->dev, "invalid dai format\n"); return -EINVAL; } - /* This device can only be slave */ - if ((format & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS) + /* This device can only be consumer */ + if ((format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) != SND_SOC_DAIFMT_CBC_CFC) return -EINVAL; ret = regmap_update_bits(ak4104->regmap, AK4104_REG_CONTROL1, @@ -91,8 +98,8 @@ static int ak4104_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { - struct snd_soc_codec *codec = dai->codec; - struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); + struct snd_soc_component *component = dai->component; + struct ak4104_private *ak4104 = snd_soc_component_get_drvdata(component); int ret, val = 0; /* set the IEC958 bits: consumer mode, no copyright bit */ @@ -130,7 +137,7 @@ static int ak4104_hw_params(struct snd_pcm_substream *substream, val |= IEC958_AES3_CON_FS_192000; break; default: - dev_err(codec->dev, "unsupported sampling rate\n"); + dev_err(component->dev, "unsupported sampling rate\n"); return -EINVAL; } @@ -138,29 +145,11 @@ static int ak4104_hw_params(struct snd_pcm_substream *substream, if (ret < 0) return ret; - /* enable transmitter */ - ret = regmap_update_bits(ak4104->regmap, AK4104_REG_TX, - AK4104_TX_TXE, AK4104_TX_TXE); - if (ret < 0) - return ret; - return 0; } -static int ak4104_hw_free(struct snd_pcm_substream *substream, - struct snd_soc_dai *dai) -{ - struct snd_soc_codec *codec = dai->codec; - struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); - - /* disable transmitter */ - return regmap_update_bits(ak4104->regmap, AK4104_REG_TX, - AK4104_TX_TXE, 0); -} - static const struct snd_soc_dai_ops ak4101_dai_ops = { .hw_params = ak4104_hw_params, - .hw_free = ak4104_hw_free, .set_fmt = ak4104_set_dai_fmt, }; @@ -170,7 +159,10 @@ static struct snd_soc_dai_driver ak4104_dai = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, - .rates = SNDRV_PCM_RATE_8000_192000, + .rates = SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | + SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | + SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | + SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000, .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE @@ -178,42 +170,84 @@ static struct snd_soc_dai_driver ak4104_dai = { .ops = &ak4101_dai_ops, }; -static int ak4104_probe(struct snd_soc_codec *codec) +static int ak4104_probe(struct snd_soc_component *component) { - struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); + struct ak4104_private *ak4104 = snd_soc_component_get_drvdata(component); int ret; - codec->control_data = ak4104->regmap; + ret = regulator_enable(ak4104->regulator); + if (ret < 0) { + dev_err(component->dev, "Unable to enable regulator: %d\n", ret); + return ret; + } /* set power-up and non-reset bits */ ret = regmap_update_bits(ak4104->regmap, AK4104_REG_CONTROL1, AK4104_CONTROL1_PW | AK4104_CONTROL1_RSTN, AK4104_CONTROL1_PW | AK4104_CONTROL1_RSTN); if (ret < 0) - return ret; + goto exit_disable_regulator; /* enable transmitter */ ret = regmap_update_bits(ak4104->regmap, AK4104_REG_TX, AK4104_TX_TXE, AK4104_TX_TXE); if (ret < 0) - return ret; + goto exit_disable_regulator; return 0; + +exit_disable_regulator: + regulator_disable(ak4104->regulator); + return ret; } -static int ak4104_remove(struct snd_soc_codec *codec) +static void ak4104_remove(struct snd_soc_component *component) { - struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec); + struct ak4104_private *ak4104 = snd_soc_component_get_drvdata(component); regmap_update_bits(ak4104->regmap, AK4104_REG_CONTROL1, AK4104_CONTROL1_PW | AK4104_CONTROL1_RSTN, 0); + regulator_disable(ak4104->regulator); +} + +#ifdef CONFIG_PM +static int ak4104_soc_suspend(struct snd_soc_component *component) +{ + struct ak4104_private *priv = snd_soc_component_get_drvdata(component); + + regulator_disable(priv->regulator); return 0; } -static struct snd_soc_codec_driver soc_codec_device_ak4104 = { - .probe = ak4104_probe, - .remove = ak4104_remove, +static int ak4104_soc_resume(struct snd_soc_component *component) +{ + struct ak4104_private *priv = snd_soc_component_get_drvdata(component); + int ret; + + ret = regulator_enable(priv->regulator); + if (ret < 0) + return ret; + + return 0; +} +#else +#define ak4104_soc_suspend NULL +#define ak4104_soc_resume NULL +#endif /* CONFIG_PM */ + +static const struct snd_soc_component_driver soc_component_device_ak4104 = { + .probe = ak4104_probe, + .remove = ak4104_remove, + .suspend = ak4104_soc_suspend, + .resume = ak4104_soc_resume, + .dapm_widgets = ak4104_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(ak4104_dapm_widgets), + .dapm_routes = ak4104_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(ak4104_dapm_routes), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, }; static const struct regmap_config ak4104_regmap = { @@ -229,8 +263,8 @@ static const struct regmap_config ak4104_regmap = { static int ak4104_spi_probe(struct spi_device *spi) { - struct device_node *np = spi->dev.of_node; struct ak4104_private *ak4104; + struct gpio_desc *reset_gpiod; unsigned int val; int ret; @@ -245,25 +279,23 @@ static int ak4104_spi_probe(struct spi_device *spi) if (ak4104 == NULL) return -ENOMEM; + ak4104->regulator = devm_regulator_get(&spi->dev, "vdd"); + if (IS_ERR(ak4104->regulator)) { + ret = PTR_ERR(ak4104->regulator); + dev_err(&spi->dev, "Unable to get Vdd regulator: %d\n", ret); + return ret; + } + ak4104->regmap = devm_regmap_init_spi(spi, &ak4104_regmap); if (IS_ERR(ak4104->regmap)) { ret = PTR_ERR(ak4104->regmap); return ret; } - if (np) { - enum of_gpio_flags flags; - int gpio = of_get_named_gpio_flags(np, "reset-gpio", 0, &flags); - - if (gpio_is_valid(gpio)) { - ret = devm_gpio_request_one(&spi->dev, gpio, - flags & OF_GPIO_ACTIVE_LOW ? - GPIOF_OUT_INIT_LOW : GPIOF_OUT_INIT_HIGH, - "ak4104 reset"); - if (ret < 0) - return ret; - } - } + reset_gpiod = devm_gpiod_get_optional(&spi->dev, "reset", + GPIOD_OUT_HIGH); + if (PTR_ERR(reset_gpiod) == -EPROBE_DEFER) + return -EPROBE_DEFER; /* read the 'reserved' register - according to the datasheet, it * should contain 0x5b. Not a good way to verify the presence of @@ -276,31 +308,30 @@ static int ak4104_spi_probe(struct spi_device *spi) spi_set_drvdata(spi, ak4104); - ret = snd_soc_register_codec(&spi->dev, - &soc_codec_device_ak4104, &ak4104_dai, 1); + ret = devm_snd_soc_register_component(&spi->dev, + &soc_component_device_ak4104, &ak4104_dai, 1); return ret; } -static int ak4104_spi_remove(struct spi_device *spi) -{ - snd_soc_unregister_codec(&spi->dev); - return 0; -} - static const struct of_device_id ak4104_of_match[] = { { .compatible = "asahi-kasei,ak4104", }, { } }; MODULE_DEVICE_TABLE(of, ak4104_of_match); +static const struct spi_device_id ak4104_id_table[] = { + { "ak4104", 0 }, + { } +}; +MODULE_DEVICE_TABLE(spi, ak4104_id_table); + static struct spi_driver ak4104_spi_driver = { .driver = { - .name = DRV_NAME, - .owner = THIS_MODULE, + .name = "ak4104", .of_match_table = ak4104_of_match, }, + .id_table = ak4104_id_table, .probe = ak4104_spi_probe, - .remove = ak4104_spi_remove, }; module_spi_driver(ak4104_spi_driver); |