418 lines
11 KiB
C
418 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* ak4118.c -- Asahi Kasei ALSA Soc Audio driver
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*
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* Copyright 2018 DEVIALET
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*/
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#include <linux/i2c.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <sound/asoundef.h>
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#include <sound/core.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#define AK4118_REG_CLK_PWR_CTL 0x00
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#define AK4118_REG_FORMAT_CTL 0x01
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#define AK4118_REG_IO_CTL0 0x02
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#define AK4118_REG_IO_CTL1 0x03
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#define AK4118_REG_INT0_MASK 0x04
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#define AK4118_REG_INT1_MASK 0x05
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#define AK4118_REG_RCV_STATUS0 0x06
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#define AK4118_REG_RCV_STATUS1 0x07
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#define AK4118_REG_RXCHAN_STATUS0 0x08
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#define AK4118_REG_RXCHAN_STATUS1 0x09
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#define AK4118_REG_RXCHAN_STATUS2 0x0a
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#define AK4118_REG_RXCHAN_STATUS3 0x0b
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#define AK4118_REG_RXCHAN_STATUS4 0x0c
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#define AK4118_REG_TXCHAN_STATUS0 0x0d
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#define AK4118_REG_TXCHAN_STATUS1 0x0e
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#define AK4118_REG_TXCHAN_STATUS2 0x0f
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#define AK4118_REG_TXCHAN_STATUS3 0x10
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#define AK4118_REG_TXCHAN_STATUS4 0x11
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#define AK4118_REG_BURST_PREAMB_PC0 0x12
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#define AK4118_REG_BURST_PREAMB_PC1 0x13
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#define AK4118_REG_BURST_PREAMB_PD0 0x14
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#define AK4118_REG_BURST_PREAMB_PD1 0x15
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#define AK4118_REG_QSUB_CTL 0x16
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#define AK4118_REG_QSUB_TRACK 0x17
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#define AK4118_REG_QSUB_INDEX 0x18
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#define AK4118_REG_QSUB_MIN 0x19
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#define AK4118_REG_QSUB_SEC 0x1a
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#define AK4118_REG_QSUB_FRAME 0x1b
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#define AK4118_REG_QSUB_ZERO 0x1c
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#define AK4118_REG_QSUB_ABS_MIN 0x1d
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#define AK4118_REG_QSUB_ABS_SEC 0x1e
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#define AK4118_REG_QSUB_ABS_FRAME 0x1f
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#define AK4118_REG_GPE 0x20
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#define AK4118_REG_GPDR 0x21
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#define AK4118_REG_GPSCR 0x22
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#define AK4118_REG_GPLR 0x23
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#define AK4118_REG_DAT_MASK_DTS 0x24
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#define AK4118_REG_RX_DETECT 0x25
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#define AK4118_REG_STC_DAT_DETECT 0x26
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#define AK4118_REG_RXCHAN_STATUS5 0x27
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#define AK4118_REG_TXCHAN_STATUS5 0x28
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#define AK4118_REG_MAX 0x29
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#define AK4118_REG_FORMAT_CTL_DIF0 (1 << 4)
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#define AK4118_REG_FORMAT_CTL_DIF1 (1 << 5)
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#define AK4118_REG_FORMAT_CTL_DIF2 (1 << 6)
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struct ak4118_priv {
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struct regmap *regmap;
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struct gpio_desc *reset;
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struct gpio_desc *irq;
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struct snd_soc_component *component;
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};
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static const struct reg_default ak4118_reg_defaults[] = {
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{AK4118_REG_CLK_PWR_CTL, 0x43},
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{AK4118_REG_FORMAT_CTL, 0x6a},
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{AK4118_REG_IO_CTL0, 0x88},
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{AK4118_REG_IO_CTL1, 0x48},
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{AK4118_REG_INT0_MASK, 0xee},
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{AK4118_REG_INT1_MASK, 0xb5},
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{AK4118_REG_RCV_STATUS0, 0x00},
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{AK4118_REG_RCV_STATUS1, 0x10},
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{AK4118_REG_TXCHAN_STATUS0, 0x00},
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{AK4118_REG_TXCHAN_STATUS1, 0x00},
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{AK4118_REG_TXCHAN_STATUS2, 0x00},
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{AK4118_REG_TXCHAN_STATUS3, 0x00},
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{AK4118_REG_TXCHAN_STATUS4, 0x00},
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{AK4118_REG_GPE, 0x77},
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{AK4118_REG_GPDR, 0x00},
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{AK4118_REG_GPSCR, 0x00},
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{AK4118_REG_GPLR, 0x00},
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{AK4118_REG_DAT_MASK_DTS, 0x3f},
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{AK4118_REG_RX_DETECT, 0x00},
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{AK4118_REG_STC_DAT_DETECT, 0x00},
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{AK4118_REG_TXCHAN_STATUS5, 0x00},
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};
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static const char * const ak4118_input_select_txt[] = {
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"RX0", "RX1", "RX2", "RX3", "RX4", "RX5", "RX6", "RX7",
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};
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static SOC_ENUM_SINGLE_DECL(ak4118_insel_enum, AK4118_REG_IO_CTL1, 0x0,
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ak4118_input_select_txt);
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static const struct snd_kcontrol_new ak4118_input_mux_controls =
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SOC_DAPM_ENUM("Input Select", ak4118_insel_enum);
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static const char * const ak4118_iec958_fs_txt[] = {
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"44100", "48000", "32000", "22050", "11025", "24000", "16000", "88200",
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"8000", "96000", "64000", "176400", "192000",
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};
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static const int ak4118_iec958_fs_val[] = {
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0x0, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xA, 0xB, 0xC, 0xE,
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};
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static SOC_VALUE_ENUM_SINGLE_DECL(ak4118_iec958_fs_enum, AK4118_REG_RCV_STATUS1,
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0x4, 0x4, ak4118_iec958_fs_txt,
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ak4118_iec958_fs_val);
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static struct snd_kcontrol_new ak4118_iec958_controls[] = {
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SOC_SINGLE("IEC958 Parity Errors", AK4118_REG_RCV_STATUS0, 0, 1, 0),
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SOC_SINGLE("IEC958 No Audio", AK4118_REG_RCV_STATUS0, 1, 1, 0),
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SOC_SINGLE("IEC958 PLL Lock", AK4118_REG_RCV_STATUS0, 4, 1, 1),
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SOC_SINGLE("IEC958 Non PCM", AK4118_REG_RCV_STATUS0, 6, 1, 0),
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SOC_ENUM("IEC958 Sampling Freq", ak4118_iec958_fs_enum),
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};
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static const struct snd_soc_dapm_widget ak4118_dapm_widgets[] = {
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SND_SOC_DAPM_INPUT("INRX0"),
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SND_SOC_DAPM_INPUT("INRX1"),
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SND_SOC_DAPM_INPUT("INRX2"),
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SND_SOC_DAPM_INPUT("INRX3"),
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SND_SOC_DAPM_INPUT("INRX4"),
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SND_SOC_DAPM_INPUT("INRX5"),
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SND_SOC_DAPM_INPUT("INRX6"),
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SND_SOC_DAPM_INPUT("INRX7"),
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SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
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&ak4118_input_mux_controls),
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};
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static const struct snd_soc_dapm_route ak4118_dapm_routes[] = {
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{"Input Mux", "RX0", "INRX0"},
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{"Input Mux", "RX1", "INRX1"},
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{"Input Mux", "RX2", "INRX2"},
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{"Input Mux", "RX3", "INRX3"},
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{"Input Mux", "RX4", "INRX4"},
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{"Input Mux", "RX5", "INRX5"},
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{"Input Mux", "RX6", "INRX6"},
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{"Input Mux", "RX7", "INRX7"},
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};
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static int ak4118_set_dai_fmt_provider(struct ak4118_priv *ak4118,
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unsigned int format)
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{
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int dif;
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switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF2;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF1;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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dif = AK4118_REG_FORMAT_CTL_DIF2;
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break;
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default:
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return -ENOTSUPP;
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}
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return dif;
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}
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static int ak4118_set_dai_fmt_consumer(struct ak4118_priv *ak4118,
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unsigned int format)
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{
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int dif;
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switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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dif = AK4118_REG_FORMAT_CTL_DIF0 | AK4118_REG_FORMAT_CTL_DIF1 |
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AK4118_REG_FORMAT_CTL_DIF2;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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dif = AK4118_REG_FORMAT_CTL_DIF1 | AK4118_REG_FORMAT_CTL_DIF2;
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break;
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default:
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return -ENOTSUPP;
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}
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return dif;
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}
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static int ak4118_set_dai_fmt(struct snd_soc_dai *dai,
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unsigned int format)
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{
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struct snd_soc_component *component = dai->component;
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struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
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int dif;
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int ret = 0;
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switch (format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
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case SND_SOC_DAIFMT_CBP_CFP:
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dif = ak4118_set_dai_fmt_provider(ak4118, format);
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break;
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case SND_SOC_DAIFMT_CBC_CFC:
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dif = ak4118_set_dai_fmt_consumer(ak4118, format);
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break;
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default:
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ret = -ENOTSUPP;
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goto exit;
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}
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/* format not supported */
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if (dif < 0) {
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ret = dif;
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goto exit;
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}
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ret = regmap_update_bits(ak4118->regmap, AK4118_REG_FORMAT_CTL,
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AK4118_REG_FORMAT_CTL_DIF0 |
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AK4118_REG_FORMAT_CTL_DIF1 |
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AK4118_REG_FORMAT_CTL_DIF2, dif);
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if (ret < 0)
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goto exit;
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exit:
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return ret;
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}
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static int ak4118_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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return 0;
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}
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static const struct snd_soc_dai_ops ak4118_dai_ops = {
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.hw_params = ak4118_hw_params,
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.set_fmt = ak4118_set_dai_fmt,
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};
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static struct snd_soc_dai_driver ak4118_dai = {
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.name = "ak4118-hifi",
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.capture = {
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.stream_name = "Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 |
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SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
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SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
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SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE |
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SNDRV_PCM_FMTBIT_S24_3LE |
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SNDRV_PCM_FMTBIT_S24_LE
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},
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.ops = &ak4118_dai_ops,
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};
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static irqreturn_t ak4118_irq_handler(int irq, void *data)
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{
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struct ak4118_priv *ak4118 = data;
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struct snd_soc_component *component = ak4118->component;
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struct snd_kcontrol_new *kctl_new;
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unsigned int i;
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if (!component)
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return IRQ_NONE;
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for (i = 0; i < ARRAY_SIZE(ak4118_iec958_controls); i++) {
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kctl_new = &ak4118_iec958_controls[i];
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snd_soc_component_notify_control(component, kctl_new->name);
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}
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return IRQ_HANDLED;
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}
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static int ak4118_probe(struct snd_soc_component *component)
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{
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struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
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int ret = 0;
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ak4118->component = component;
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/* release reset */
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gpiod_set_value(ak4118->reset, 0);
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/* unmask all int1 sources */
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ret = regmap_write(ak4118->regmap, AK4118_REG_INT1_MASK, 0x00);
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if (ret < 0) {
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dev_err(component->dev,
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"failed to write regmap 0x%x 0x%x: %d\n",
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AK4118_REG_INT1_MASK, 0x00, ret);
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return ret;
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}
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/* rx detect enable on all channels */
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ret = regmap_write(ak4118->regmap, AK4118_REG_RX_DETECT, 0xff);
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if (ret < 0) {
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dev_err(component->dev,
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"failed to write regmap 0x%x 0x%x: %d\n",
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AK4118_REG_RX_DETECT, 0xff, ret);
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return ret;
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}
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ret = snd_soc_add_component_controls(component, ak4118_iec958_controls,
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ARRAY_SIZE(ak4118_iec958_controls));
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if (ret) {
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dev_err(component->dev,
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"failed to add component kcontrols: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static void ak4118_remove(struct snd_soc_component *component)
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{
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struct ak4118_priv *ak4118 = snd_soc_component_get_drvdata(component);
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/* hold reset */
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gpiod_set_value(ak4118->reset, 1);
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}
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static const struct snd_soc_component_driver soc_component_drv_ak4118 = {
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.probe = ak4118_probe,
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.remove = ak4118_remove,
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.dapm_widgets = ak4118_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(ak4118_dapm_widgets),
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.dapm_routes = ak4118_dapm_routes,
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.num_dapm_routes = ARRAY_SIZE(ak4118_dapm_routes),
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.idle_bias_on = 1,
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.use_pmdown_time = 1,
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.endianness = 1,
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};
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static const struct regmap_config ak4118_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.reg_defaults = ak4118_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(ak4118_reg_defaults),
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.cache_type = REGCACHE_NONE,
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.max_register = AK4118_REG_MAX - 1,
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};
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static int ak4118_i2c_probe(struct i2c_client *i2c)
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{
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struct ak4118_priv *ak4118;
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int ret;
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ak4118 = devm_kzalloc(&i2c->dev, sizeof(struct ak4118_priv),
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GFP_KERNEL);
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if (ak4118 == NULL)
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return -ENOMEM;
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ak4118->regmap = devm_regmap_init_i2c(i2c, &ak4118_regmap);
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if (IS_ERR(ak4118->regmap))
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return PTR_ERR(ak4118->regmap);
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i2c_set_clientdata(i2c, ak4118);
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ak4118->reset = devm_gpiod_get(&i2c->dev, "reset", GPIOD_OUT_HIGH);
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if (IS_ERR(ak4118->reset))
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return dev_err_probe(&i2c->dev, PTR_ERR(ak4118->reset),
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"Failed to get reset\n");
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ak4118->irq = devm_gpiod_get(&i2c->dev, "irq", GPIOD_IN);
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if (IS_ERR(ak4118->irq))
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return dev_err_probe(&i2c->dev, PTR_ERR(ak4118->irq),
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"Failed to get IRQ\n");
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ret = devm_request_threaded_irq(&i2c->dev, gpiod_to_irq(ak4118->irq),
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NULL, ak4118_irq_handler,
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IRQF_TRIGGER_RISING | IRQF_ONESHOT,
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"ak4118-irq", ak4118);
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if (ret < 0) {
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dev_err(&i2c->dev, "Fail to request_irq: %d\n", ret);
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return ret;
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}
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return devm_snd_soc_register_component(&i2c->dev,
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&soc_component_drv_ak4118, &ak4118_dai, 1);
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}
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#ifdef CONFIG_OF
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static const struct of_device_id ak4118_of_match[] = {
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{ .compatible = "asahi-kasei,ak4118", },
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{}
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};
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MODULE_DEVICE_TABLE(of, ak4118_of_match);
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#endif
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static const struct i2c_device_id ak4118_id_table[] = {
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{ "ak4118", 0 },
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{}
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};
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MODULE_DEVICE_TABLE(i2c, ak4118_id_table);
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static struct i2c_driver ak4118_i2c_driver = {
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.driver = {
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.name = "ak4118",
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.of_match_table = of_match_ptr(ak4118_of_match),
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},
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.id_table = ak4118_id_table,
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.probe = ak4118_i2c_probe,
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};
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module_i2c_driver(ak4118_i2c_driver);
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MODULE_DESCRIPTION("Asahi Kasei AK4118 ALSA SoC driver");
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MODULE_AUTHOR("Adrien Charruel <adrien.charruel@devialet.com>");
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MODULE_LICENSE("GPL");
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