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- // SPDX-License-Identifier: GPL-2.0
- /*
- * ak4118.c -- Asahi Kasei ALSA Soc Audio driver
- *
- * Copyright 2018 DEVIALET
- */
- #include <linux/i2c.h>
- #include <linux/gpio/consumer.h>
- #include <linux/module.h>
- #include <linux/of_device.h>
- #include <linux/of_gpio.h>
- #include <linux/regmap.h>
- #include <linux/slab.h>
- #include <sound/asoundef.h>
- #include <sound/core.h>
- #include <sound/initval.h>
- #include <sound/soc.h>
- #define AK4118_REG_CLK_PWR_CTL 0x00
- #define AK4118_REG_FORMAT_CTL 0x01
- #define AK4118_REG_IO_CTL0 0x02
- #define AK4118_REG_IO_CTL1 0x03
- #define AK4118_REG_INT0_MASK 0x04
- #define AK4118_REG_INT1_MASK 0x05
- #define AK4118_REG_RCV_STATUS0 0x06
- #define AK4118_REG_RCV_STATUS1 0x07
- #define AK4118_REG_RXCHAN_STATUS0 0x08
- #define AK4118_REG_RXCHAN_STATUS1 0x09
- #define AK4118_REG_RXCHAN_STATUS2 0x0a
- #define AK4118_REG_RXCHAN_STATUS3 0x0b
- #define AK4118_REG_RXCHAN_STATUS4 0x0c
- #define AK4118_REG_TXCHAN_STATUS0 0x0d
- #define AK4118_REG_TXCHAN_STATUS1 0x0e
- #define AK4118_REG_TXCHAN_STATUS2 0x0f
- #define AK4118_REG_TXCHAN_STATUS3 0x10
- #define AK4118_REG_TXCHAN_STATUS4 0x11
- #define AK4118_REG_BURST_PREAMB_PC0 0x12
- #define AK4118_REG_BURST_PREAMB_PC1 0x13
- #define AK4118_REG_BURST_PREAMB_PD0 0x14
- #define AK4118_REG_BURST_PREAMB_PD1 0x15
- #define AK4118_REG_QSUB_CTL 0x16
- #define AK4118_REG_QSUB_TRACK 0x17
- #define AK4118_REG_QSUB_INDEX 0x18
- #define AK4118_REG_QSUB_MIN 0x19
- #define AK4118_REG_QSUB_SEC 0x1a
- #define AK4118_REG_QSUB_FRAME 0x1b
- #define AK4118_REG_QSUB_ZERO 0x1c
- #define AK4118_REG_QSUB_ABS_MIN 0x1d
- #define AK4118_REG_QSUB_ABS_SEC 0x1e
- #define AK4118_REG_QSUB_ABS_FRAME 0x1f
- #define AK4118_REG_GPE 0x20
- #define AK4118_REG_GPDR 0x21
- #define AK4118_REG_GPSCR 0x22
- #define AK4118_REG_GPLR 0x23
- #define AK4118_REG_DAT_MASK_DTS 0x24
- #define AK4118_REG_RX_DETECT 0x25
- #define AK4118_REG_STC_DAT_DETECT 0x26
- #define AK4118_REG_RXCHAN_STATUS5 0x27
- #define AK4118_REG_TXCHAN_STATUS5 0x28
- #define AK4118_REG_MAX 0x29
- #define AK4118_REG_FORMAT_CTL_DIF0 (1 << 4)
- #define AK4118_REG_FORMAT_CTL_DIF1 (1 << 5)
- #define AK4118_REG_FORMAT_CTL_DIF2 (1 << 6)
- struct ak4118_priv {
- struct regmap *regmap;
- struct gpio_desc *reset;
- struct gpio_desc *irq;
- struct snd_soc_component *component;
- };
- static const struct reg_default ak4118_reg_defaults[] = {
- {AK4118_REG_CLK_PWR_CTL, 0x43},
- {AK4118_REG_FORMAT_CTL, 0x6a},
- {AK4118_REG_IO_CTL0, 0x88},
- {AK4118_REG_IO_CTL1, 0x48},
- {AK4118_REG_INT0_MASK, 0xee},
- {AK4118_REG_INT1_MASK, 0xb5},
- {AK4118_REG_RCV_STATUS0, 0x00},
- {AK4118_REG_RCV_STATUS1, 0x10},
- {AK4118_REG_TXCHAN_STATUS0, 0x00},
- {AK4118_REG_TXCHAN_STATUS1, 0x00},
- {AK4118_REG_TXCHAN_STATUS2, 0x00},
- {AK4118_REG_TXCHAN_STATUS3, 0x00},
- {AK4118_REG_TXCHAN_STATUS4, 0x00},
- {AK4118_REG_GPE, 0x77},
- {AK4118_REG_GPDR, 0x00},
- {AK4118_REG_GPSCR, 0x00},
- {AK4118_REG_GPLR, 0x00},
- {AK4118_REG_DAT_MASK_DTS, 0x3f},
- {AK4118_REG_RX_DETECT, 0x00},
- {AK4118_REG_STC_DAT_DETECT, 0x00},
- {AK4118_REG_TXCHAN_STATUS5, 0x00},
- };
- static const char * const ak4118_input_select_txt[] = {
- "RX0", "RX1", "RX2", "RX3", "RX4", "RX5", "RX6", "RX7",
- };
- static SOC_ENUM_SINGLE_DECL(ak4118_insel_enum, AK4118_REG_IO_CTL1, 0x0,
- ak4118_input_select_txt);
- static const struct snd_kcontrol_new ak4118_input_mux_controls =
- SOC_DAPM_ENUM("Input Select", ak4118_insel_enum);
- static const char * const ak4118_iec958_fs_txt[] = {
- "44100", "48000", "32000", "22050", "11025", "24000", "16000", "88200",
- "8000", "96000", "64000", "176400", "192000",
- };
- static const int ak4118_iec958_fs_val[] = {
- 0x0, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xE,
- };
- static SOC_VALUE_ENUM_SINGLE_DECL(ak4118_iec958_fs_enum, AK4118_REG_RCV_STATUS1,
- 0x4, 0x4, ak4118_iec958_fs_txt,
- ak4118_iec958_fs_val);
- static struct snd_kcontrol_new ak4118_iec958_controls[] = {
- SOC_SINGLE("IEC958 Parity Errors", AK4118_REG_RCV_STATUS0, 0, 1, 0),
- SOC_SINGLE("IEC958 No Audio", AK4118_REG_RCV_STATUS0, 1, 1, 0),
- SOC_SINGLE("IEC958 PLL Lock", AK4118_REG_RCV_STATUS0, 4, 1, 1),
- SOC_SINGLE("IEC958 Non PCM", AK4118_REG_RCV_STATUS0, 6, 1, 0),
- SOC_ENUM("IEC958 Sampling Freq", ak4118_iec958_fs_enum),
- };
- static const struct snd_soc_dapm_widget ak4118_dapm_widgets[] = {
- SND_SOC_DAPM_INPUT("INRX0"),
- SND_SOC_DAPM_INPUT("INRX1"),
- SND_SOC_DAPM_INPUT("INRX2"),
- SND_SOC_DAPM_INPUT("INRX3"),
- SND_SOC_DAPM_INPUT("INRX4"),
- SND_SOC_DAPM_INPUT("INRX5"),
- SND_SOC_DAPM_INPUT("INRX6"),
- SND_SOC_DAPM_INPUT("INRX7"),
- SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
- &ak4118_input_mux_controls),
- };
- static const struct snd_soc_dapm_route ak4118_dapm_routes[] = {
- {"Input Mux", "RX0", "INRX0"},
- {"Input Mux", "RX1", "INRX1"},
- {"Input Mux", "RX2", "INRX2"},
- {"Input Mux", "RX3", "INRX3"},
- {"Input Mux", "RX4", "INRX4"},
- {"Input Mux", "RX5", "INRX5"},
- {"Input Mux", "RX6", "INRX6"},
- {"Input Mux", "RX7", "INRX7"},
- };
- static int ak4118_set_dai_fmt_provider(struct ak4118_priv *ak4118,
- unsigned int format)
- {
- int dif;
- switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
- case SND_SOC_DAIFMT_I2S:
- dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF2;
- break;
- case SND_SOC_DAIFMT_RIGHT_J:
- dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF1;
- break;
- case SND_SOC_DAIFMT_LEFT_J:
- dif = AK4118_REG_FORMAT_CTL_DIF2;
- break;
- default:
- return -ENOTSUPP;
- }
- return dif;
- }
- static int ak4118_set_dai_fmt_consumer(struct ak4118_priv *ak4118,
- unsigned int format)
- {
- int dif;
- switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
- case SND_SOC_DAIFMT_I2S:
- dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF1 |
- AK4118_REG_FORMAT_CTL_DIF2;
- break;
- case SND_SOC_DAIFMT_LEFT_J:
- dif = AK4118_REG_FORMAT_CTL_DIF1 | AK4118_REG_FORMAT_CTL_DIF2;
- break;
- default:
- return -ENOTSUPP;
- }
- return dif;
- }
- static int ak4118_set_dai_fmt(struct snd_soc_dai *dai,
- unsigned int format)
- {
- struct snd_soc_component *component = dai->component;
- struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
- int dif;
- int ret = 0;
- switch (format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
- case SND_SOC_DAIFMT_CBP_CFP:
- dif = ak4118_set_dai_fmt_provider(ak4118, format);
- break;
- case SND_SOC_DAIFMT_CBC_CFC:
- dif = ak4118_set_dai_fmt_consumer(ak4118, format);
- break;
- default:
- ret = -ENOTSUPP;
- goto exit;
- }
- /* format not supported */
- if (dif < 0) {
- ret = dif;
- goto exit;
- }
- ret = regmap_update_bits(ak4118->regmap, AK4118_REG_FORMAT_CTL,
- AK4118_REG_FORMAT_CTL_DIF0 |
- AK4118_REG_FORMAT_CTL_DIF1 |
- AK4118_REG_FORMAT_CTL_DIF2, dif);
- if (ret < 0)
- goto exit;
- exit:
- return ret;
- }
- static int ak4118_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *dai)
- {
- return 0;
- }
- static const struct snd_soc_dai_ops ak4118_dai_ops = {
- .hw_params = ak4118_hw_params,
- .set_fmt = ak4118_set_dai_fmt,
- };
- static struct snd_soc_dai_driver ak4118_dai = {
- .name = "ak4118-hifi",
- .capture = {
- .stream_name = "Capture",
- .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 = &ak4118_dai_ops,
- };
- static irqreturn_t ak4118_irq_handler(int irq, void *data)
- {
- struct ak4118_priv *ak4118 = data;
- struct snd_soc_component *component = ak4118->component;
- struct snd_kcontrol_new *kctl_new;
- struct snd_kcontrol *kctl;
- struct snd_ctl_elem_id *id;
- unsigned int i;
- if (!component)
- return IRQ_NONE;
- for (i = 0; i < ARRAY_SIZE(ak4118_iec958_controls); i++) {
- kctl_new = &ak4118_iec958_controls[i];
- kctl = snd_soc_card_get_kcontrol(component->card,
- kctl_new->name);
- if (!kctl)
- continue;
- id = &kctl->id;
- snd_ctl_notify(component->card->snd_card,
- SNDRV_CTL_EVENT_MASK_VALUE, id);
- }
- return IRQ_HANDLED;
- }
- static int ak4118_probe(struct snd_soc_component *component)
- {
- struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
- int ret = 0;
- ak4118->component = component;
- /* release reset */
- gpiod_set_value(ak4118->reset, 0);
- /* unmask all int1 sources */
- ret = regmap_write(ak4118->regmap, AK4118_REG_INT1_MASK, 0x00);
- if (ret < 0) {
- dev_err(component->dev,
- "failed to write regmap 0x%x 0x%x: %d\n",
- AK4118_REG_INT1_MASK, 0x00, ret);
- return ret;
- }
- /* rx detect enable on all channels */
- ret = regmap_write(ak4118->regmap, AK4118_REG_RX_DETECT, 0xff);
- if (ret < 0) {
- dev_err(component->dev,
- "failed to write regmap 0x%x 0x%x: %d\n",
- AK4118_REG_RX_DETECT, 0xff, ret);
- return ret;
- }
- ret = snd_soc_add_component_controls(component, ak4118_iec958_controls,
- ARRAY_SIZE(ak4118_iec958_controls));
- if (ret) {
- dev_err(component->dev,
- "failed to add component kcontrols: %d\n", ret);
- return ret;
- }
- return 0;
- }
- static void ak4118_remove(struct snd_soc_component *component)
- {
- struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
- /* hold reset */
- gpiod_set_value(ak4118->reset, 1);
- }
- static const struct snd_soc_component_driver soc_component_drv_ak4118 = {
- .probe = ak4118_probe,
- .remove = ak4118_remove,
- .dapm_widgets = ak4118_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(ak4118_dapm_widgets),
- .dapm_routes = ak4118_dapm_routes,
- .num_dapm_routes = ARRAY_SIZE(ak4118_dapm_routes),
- .idle_bias_on = 1,
- .use_pmdown_time = 1,
- .endianness = 1,
- };
- static const struct regmap_config ak4118_regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .reg_defaults = ak4118_reg_defaults,
- .num_reg_defaults = ARRAY_SIZE(ak4118_reg_defaults),
- .cache_type = REGCACHE_NONE,
- .max_register = AK4118_REG_MAX - 1,
- };
- static int ak4118_i2c_probe(struct i2c_client *i2c)
- {
- struct ak4118_priv *ak4118;
- int ret;
- ak4118 = devm_kzalloc(&i2c->dev, sizeof(struct ak4118_priv),
- GFP_KERNEL);
- if (ak4118 == NULL)
- return -ENOMEM;
- ak4118->regmap = devm_regmap_init_i2c(i2c, &ak4118_regmap);
- if (IS_ERR(ak4118->regmap))
- return PTR_ERR(ak4118->regmap);
- i2c_set_clientdata(i2c, ak4118);
- ak4118->reset = devm_gpiod_get(&i2c->dev, "reset", GPIOD_OUT_HIGH);
- if (IS_ERR(ak4118->reset))
- return dev_err_probe(&i2c->dev, PTR_ERR(ak4118->reset),
- "Failed to get reset\n");
- ak4118->irq = devm_gpiod_get(&i2c->dev, "irq", GPIOD_IN);
- if (IS_ERR(ak4118->irq))
- return dev_err_probe(&i2c->dev, PTR_ERR(ak4118->irq),
- "Failed to get IRQ\n");
- ret = devm_request_threaded_irq(&i2c->dev, gpiod_to_irq(ak4118->irq),
- NULL, ak4118_irq_handler,
- IRQF_TRIGGER_RISING | IRQF_ONESHOT,
- "ak4118-irq", ak4118);
- if (ret < 0) {
- dev_err(&i2c->dev, "Fail to request_irq: %d\n", ret);
- return ret;
- }
- return devm_snd_soc_register_component(&i2c->dev,
- &soc_component_drv_ak4118, &ak4118_dai, 1);
- }
- #ifdef CONFIG_OF
- static const struct of_device_id ak4118_of_match[] = {
- { .compatible = "asahi-kasei,ak4118", },
- {}
- };
- MODULE_DEVICE_TABLE(of, ak4118_of_match);
- #endif
- static const struct i2c_device_id ak4118_id_table[] = {
- { "ak4118", 0 },
- {}
- };
- MODULE_DEVICE_TABLE(i2c, ak4118_id_table);
- static struct i2c_driver ak4118_i2c_driver = {
- .driver = {
- .name = "ak4118",
- .of_match_table = of_match_ptr(ak4118_of_match),
- },
- .id_table = ak4118_id_table,
- .probe_new = ak4118_i2c_probe,
- };
- module_i2c_driver(ak4118_i2c_driver);
- MODULE_DESCRIPTION("Asahi Kasei AK4118 ALSA SoC driver");
- MODULE_AUTHOR("Adrien Charruel <[email protected]>");
- MODULE_LICENSE("GPL");
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