| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Daniel Mack | 909 | 69.02% | 9 | 32.14% |
| Mark Brown | 233 | 17.69% | 8 | 28.57% |
| Liam Girdwood | 81 | 6.15% | 1 | 3.57% |
| Kuninori Morimoto | 50 | 3.80% | 1 | 3.57% |
| Vishal Thanki | 15 | 1.14% | 1 | 3.57% |
| Richard Purdie | 7 | 0.53% | 1 | 3.57% |
| Tushar Behera | 6 | 0.46% | 1 | 3.57% |
| Axel Lin | 6 | 0.46% | 1 | 3.57% |
| Rob Herring | 4 | 0.30% | 1 | 3.57% |
| Thomas Gleixner | 2 | 0.15% | 1 | 3.57% |
| Tejun Heo | 2 | 0.15% | 1 | 3.57% |
| Lars-Peter Clausen | 1 | 0.08% | 1 | 3.57% |
| Bhumika Goyal | 1 | 0.08% | 1 | 3.57% |
| Total | 1317 | 28 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * AK4104 ALSA SoC (ASoC) driver * * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> */ #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> /* AK4104 registers addresses */ #define AK4104_REG_CONTROL1 0x00 #define AK4104_REG_RESERVED 0x01 #define AK4104_REG_CONTROL2 0x02 #define AK4104_REG_TX 0x03 #define AK4104_REG_CHN_STATUS(x) ((x) + 0x04) #define AK4104_NUM_REGS 10 #define AK4104_REG_MASK 0x1f #define AK4104_READ 0xc0 #define AK4104_WRITE 0xe0 #define AK4104_RESERVED_VAL 0x5b /* Bit masks for AK4104 registers */ #define AK4104_CONTROL1_RSTN (1 << 0) #define AK4104_CONTROL1_PW (1 << 1) #define AK4104_CONTROL1_DIF0 (1 << 2) #define AK4104_CONTROL1_DIF1 (1 << 3) #define AK4104_CONTROL2_SEL0 (1 << 0) #define AK4104_CONTROL2_SEL1 (1 << 1) #define AK4104_CONTROL2_MODE (1 << 2) #define AK4104_TX_TXE (1 << 0) #define AK4104_TX_V (1 << 1) 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_component *component = codec_dai->component; struct ak4104_private *ak4104 = snd_soc_component_get_drvdata(component); int val = 0; int ret; /* set DAI format */ switch (format & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_RIGHT_J: break; case SND_SOC_DAIFMT_LEFT_J: val |= AK4104_CONTROL1_DIF0; break; case SND_SOC_DAIFMT_I2S: val |= AK4104_CONTROL1_DIF0 | AK4104_CONTROL1_DIF1; break; default: dev_err(component->dev, "invalid dai format\n"); return -EINVAL; } /* 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, AK4104_CONTROL1_DIF0 | AK4104_CONTROL1_DIF1, val); if (ret < 0) return ret; return 0; } static int ak4104_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { 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 */ val |= IEC958_AES0_CON_NOT_COPYRIGHT; regmap_write(ak4104->regmap, AK4104_REG_CHN_STATUS(0), val); val = 0; switch (params_rate(params)) { case 22050: val |= IEC958_AES3_CON_FS_22050; break; case 24000: val |= IEC958_AES3_CON_FS_24000; break; case 32000: val |= IEC958_AES3_CON_FS_32000; break; case 44100: val |= IEC958_AES3_CON_FS_44100; break; case 48000: val |= IEC958_AES3_CON_FS_48000; break; case 88200: val |= IEC958_AES3_CON_FS_88200; break; case 96000: val |= IEC958_AES3_CON_FS_96000; break; case 176400: val |= IEC958_AES3_CON_FS_176400; break; case 192000: val |= IEC958_AES3_CON_FS_192000; break; default: dev_err(component->dev, "unsupported sampling rate\n"); return -EINVAL; } ret = regmap_write(ak4104->regmap, AK4104_REG_CHN_STATUS(3), val); if (ret < 0) return ret; return 0; } static const struct snd_soc_dai_ops ak4101_dai_ops = { .hw_params = ak4104_hw_params, .set_fmt = ak4104_set_dai_fmt, }; static struct snd_soc_dai_driver ak4104_dai = { .name = "ak4104-hifi", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .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 }, .ops = &ak4101_dai_ops, }; static int ak4104_probe(struct snd_soc_component *component) { struct ak4104_private *ak4104 = snd_soc_component_get_drvdata(component); int ret; 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) goto exit_disable_regulator; /* enable transmitter */ ret = regmap_update_bits(ak4104->regmap, AK4104_REG_TX, AK4104_TX_TXE, AK4104_TX_TXE); if (ret < 0) goto exit_disable_regulator; return 0; exit_disable_regulator: regulator_disable(ak4104->regulator); return ret; } static void ak4104_remove(struct snd_soc_component *component) { 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 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 = { .reg_bits = 8, .val_bits = 8, .max_register = AK4104_NUM_REGS - 1, .read_flag_mask = AK4104_READ, .write_flag_mask = AK4104_WRITE, .cache_type = REGCACHE_RBTREE, }; static int ak4104_spi_probe(struct spi_device *spi) { struct ak4104_private *ak4104; struct gpio_desc *reset_gpiod; unsigned int val; int ret; spi->bits_per_word = 8; spi->mode = SPI_MODE_0; ret = spi_setup(spi); if (ret < 0) return ret; ak4104 = devm_kzalloc(&spi->dev, sizeof(struct ak4104_private), GFP_KERNEL); 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; } 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 * the device, but there is no hardware ID register. */ ret = regmap_read(ak4104->regmap, AK4104_REG_RESERVED, &val); if (ret != 0) return ret; if (val != AK4104_RESERVED_VAL) return -ENODEV; spi_set_drvdata(spi, ak4104); ret = devm_snd_soc_register_component(&spi->dev, &soc_component_device_ak4104, &ak4104_dai, 1); return ret; } 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 = "ak4104", .of_match_table = ak4104_of_match, }, .id_table = ak4104_id_table, .probe = ak4104_spi_probe, }; module_spi_driver(ak4104_spi_driver); MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>"); MODULE_DESCRIPTION("Asahi Kasei AK4104 ALSA SoC driver"); MODULE_LICENSE("GPL");
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