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mfd: ac100: Add driver for X-Powers AC100 audio codec / RTC combo IC

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The AC100 is a multifunction device with an audio codec subsystem and
an RTC subsystem. These two subsystems share a common register space
and host interface.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Chen-Yu Tsai 2016-07-08 22:33:37 +08:00 committed by Lee Jones
parent 44fb25d031
commit 585083c539
4 changed files with 327 additions and 0 deletions
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10
drivers/mfd/Kconfig
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@ -112,6 +112,16 @@ config MFD_BCM590XX
help
Support for the BCM590xx PMUs from Broadcom
config MFD_AC100
tristate "X-Powers AC100"
select MFD_CORE
depends on SUNXI_RSB
help
If you say Y here you get support for the X-Powers AC100 audio codec
IC.
This driver include only the core APIs. You have to select individual
components like codecs or RTC under the corresponding menus.
config MFD_AXP20X
tristate
select MFD_CORE

2
drivers/mfd/Makefile
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@ -113,6 +113,8 @@ obj-$(CONFIG_PMIC_DA9052) += da9052-irq.o
obj-$(CONFIG_PMIC_DA9052) += da9052-core.o
obj-$(CONFIG_MFD_DA9052_SPI) += da9052-spi.o
obj-$(CONFIG_MFD_DA9052_I2C) += da9052-i2c.o
obj-$(CONFIG_MFD_AC100) += ac100.o
obj-$(CONFIG_MFD_AXP20X) += axp20x.o
obj-$(CONFIG_MFD_AXP20X_I2C) += axp20x-i2c.o
obj-$(CONFIG_MFD_AXP20X_RSB) += axp20x-rsb.o

137
drivers/mfd/ac100.c Normal file
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@ -0,0 +1,137 @@
/*
* MFD core driver for X-Powers' AC100 Audio Codec IC
*
* The AC100 is a highly integrated audio codec and RTC subsystem designed
* for mobile applications. It has 3 I2S/PCM interfaces, a 2 channel DAC,
* a 2 channel ADC with 5 inputs and a builtin mixer. The RTC subsystem has
* 3 clock outputs.
*
* The audio codec and RTC parts are completely separate, sharing only the
* host interface for access to its registers.
*
* Copyright (2016) Chen-Yu Tsai
*
* Author: Chen-Yu Tsai <wens@csie.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/core.h>
#include <linux/mfd/ac100.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regmap.h>
#include <linux/sunxi-rsb.h>
static const struct regmap_range ac100_writeable_ranges[] = {
regmap_reg_range(AC100_CHIP_AUDIO_RST, AC100_I2S_SR_CTRL),
regmap_reg_range(AC100_I2S1_CLK_CTRL, AC100_I2S1_MXR_GAIN),
regmap_reg_range(AC100_I2S2_CLK_CTRL, AC100_I2S2_MXR_GAIN),
regmap_reg_range(AC100_I2S3_CLK_CTRL, AC100_I2S3_SIG_PATH_CTRL),
regmap_reg_range(AC100_ADC_DIG_CTRL, AC100_ADC_VOL_CTRL),
regmap_reg_range(AC100_HMIC_CTRL1, AC100_HMIC_STATUS),
regmap_reg_range(AC100_DAC_DIG_CTRL, AC100_DAC_MXR_GAIN),
regmap_reg_range(AC100_ADC_APC_CTRL, AC100_LINEOUT_CTRL),
regmap_reg_range(AC100_ADC_DAP_L_CTRL, AC100_ADC_DAP_OPT),
regmap_reg_range(AC100_DAC_DAP_CTRL, AC100_DAC_DAP_OPT),
regmap_reg_range(AC100_ADC_DAP_ENA, AC100_DAC_DAP_ENA),
regmap_reg_range(AC100_SRC1_CTRL1, AC100_SRC1_CTRL2),
regmap_reg_range(AC100_SRC2_CTRL1, AC100_SRC2_CTRL2),
regmap_reg_range(AC100_CLK32K_ANALOG_CTRL, AC100_CLKOUT_CTRL3),
regmap_reg_range(AC100_RTC_RST, AC100_RTC_UPD),
regmap_reg_range(AC100_ALM_INT_ENA, AC100_ALM_INT_STA),
regmap_reg_range(AC100_ALM_SEC, AC100_RTC_GP(15)),
};
static const struct regmap_range ac100_volatile_ranges[] = {
regmap_reg_range(AC100_CHIP_AUDIO_RST, AC100_PLL_CTRL2),
regmap_reg_range(AC100_HMIC_STATUS, AC100_HMIC_STATUS),
regmap_reg_range(AC100_ADC_DAP_L_STA, AC100_ADC_DAP_L_STA),
regmap_reg_range(AC100_SRC1_CTRL1, AC100_SRC1_CTRL1),
regmap_reg_range(AC100_SRC1_CTRL3, AC100_SRC2_CTRL1),
regmap_reg_range(AC100_SRC2_CTRL3, AC100_SRC2_CTRL4),
regmap_reg_range(AC100_RTC_RST, AC100_RTC_RST),
regmap_reg_range(AC100_RTC_SEC, AC100_ALM_INT_STA),
regmap_reg_range(AC100_ALM_SEC, AC100_ALM_UPD),
};
static const struct regmap_access_table ac100_writeable_table = {
.yes_ranges = ac100_writeable_ranges,
.n_yes_ranges = ARRAY_SIZE(ac100_writeable_ranges),
};
static const struct regmap_access_table ac100_volatile_table = {
.yes_ranges = ac100_volatile_ranges,
.n_yes_ranges = ARRAY_SIZE(ac100_volatile_ranges),
};
static const struct regmap_config ac100_regmap_config = {
.reg_bits = 8,
.val_bits = 16,
.wr_table = &ac100_writeable_table,
.volatile_table = &ac100_volatile_table,
.max_register = AC100_RTC_GP(15),
.cache_type = REGCACHE_RBTREE,
};
static struct mfd_cell ac100_cells[] = {
{
.name = "ac100-codec",
.of_compatible = "x-powers,ac100-codec",
}, {
.name = "ac100-rtc",
.of_compatible = "x-powers,ac100-rtc",
},
};
static int ac100_rsb_probe(struct sunxi_rsb_device *rdev)
{
struct ac100_dev *ac100;
int ret;
ac100 = devm_kzalloc(&rdev->dev, sizeof(*ac100), GFP_KERNEL);
if (!ac100)
return -ENOMEM;
ac100->dev = &rdev->dev;
sunxi_rsb_device_set_drvdata(rdev, ac100);
ac100->regmap = devm_regmap_init_sunxi_rsb(rdev, &ac100_regmap_config);
if (IS_ERR(ac100->regmap)) {
ret = PTR_ERR(ac100->regmap);
dev_err(ac100->dev, "regmap init failed: %d\n", ret);
return ret;
}
ret = devm_mfd_add_devices(ac100->dev, PLATFORM_DEVID_NONE, ac100_cells,
ARRAY_SIZE(ac100_cells), NULL, 0, NULL);
if (ret) {
dev_err(ac100->dev, "failed to add MFD devices: %d\n", ret);
return ret;
}
return 0;
}
static const struct of_device_id ac100_of_match[] = {
{ .compatible = "x-powers,ac100" },
{ },
};
MODULE_DEVICE_TABLE(of, ac100_of_match);
static struct sunxi_rsb_driver ac100_rsb_driver = {
.driver = {
.name = "ac100",
.of_match_table = of_match_ptr(ac100_of_match),
},
.probe = ac100_rsb_probe,
};
module_sunxi_rsb_driver(ac100_rsb_driver);
MODULE_DESCRIPTION("Audio codec MFD core driver for AC100");
MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
MODULE_LICENSE("GPL v2");

178
include/linux/mfd/ac100.h Normal file
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@ -0,0 +1,178 @@
/*
* Functions and registers to access AC100 codec / RTC combo IC.
*
* Copyright (C) 2016 Chen-Yu Tsai
*
* Chen-Yu Tsai <wens@csie.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __LINUX_MFD_AC100_H
#define __LINUX_MFD_AC100_H
#include <linux/regmap.h>
struct ac100_dev {
struct device *dev;
struct regmap *regmap;
};
/* Audio codec related registers */
#define AC100_CHIP_AUDIO_RST 0x00
#define AC100_PLL_CTRL1 0x01
#define AC100_PLL_CTRL2 0x02
#define AC100_SYSCLK_CTRL 0x03
#define AC100_MOD_CLK_ENA 0x04
#define AC100_MOD_RST_CTRL 0x05
#define AC100_I2S_SR_CTRL 0x06
/* I2S1 interface */
#define AC100_I2S1_CLK_CTRL 0x10
#define AC100_I2S1_SND_OUT_CTRL 0x11
#define AC100_I2S1_SND_IN_CTRL 0x12
#define AC100_I2S1_MXR_SRC 0x13
#define AC100_I2S1_VOL_CTRL1 0x14
#define AC100_I2S1_VOL_CTRL2 0x15
#define AC100_I2S1_VOL_CTRL3 0x16
#define AC100_I2S1_VOL_CTRL4 0x17
#define AC100_I2S1_MXR_GAIN 0x18
/* I2S2 interface */
#define AC100_I2S2_CLK_CTRL 0x20
#define AC100_I2S2_SND_OUT_CTRL 0x21
#define AC100_I2S2_SND_IN_CTRL 0x22
#define AC100_I2S2_MXR_SRC 0x23
#define AC100_I2S2_VOL_CTRL1 0x24
#define AC100_I2S2_VOL_CTRL2 0x25
#define AC100_I2S2_VOL_CTRL3 0x26
#define AC100_I2S2_VOL_CTRL4 0x27
#define AC100_I2S2_MXR_GAIN 0x28
/* I2S3 interface */
#define AC100_I2S3_CLK_CTRL 0x30
#define AC100_I2S3_SND_OUT_CTRL 0x31
#define AC100_I2S3_SND_IN_CTRL 0x32
#define AC100_I2S3_SIG_PATH_CTRL 0x33
/* ADC digital controls */
#define AC100_ADC_DIG_CTRL 0x40
#define AC100_ADC_VOL_CTRL 0x41
/* HMIC plug sensing / key detection */
#define AC100_HMIC_CTRL1 0x44
#define AC100_HMIC_CTRL2 0x45
#define AC100_HMIC_STATUS 0x46
/* DAC digital controls */
#define AC100_DAC_DIG_CTRL 0x48
#define AC100_DAC_VOL_CTRL 0x49
#define AC100_DAC_MXR_SRC 0x4c
#define AC100_DAC_MXR_GAIN 0x4d
/* Analog controls */
#define AC100_ADC_APC_CTRL 0x50
#define AC100_ADC_SRC 0x51
#define AC100_ADC_SRC_BST_CTRL 0x52
#define AC100_OUT_MXR_DAC_A_CTRL 0x53
#define AC100_OUT_MXR_SRC 0x54
#define AC100_OUT_MXR_SRC_BST 0x55
#define AC100_HPOUT_CTRL 0x56
#define AC100_ERPOUT_CTRL 0x57
#define AC100_SPKOUT_CTRL 0x58
#define AC100_LINEOUT_CTRL 0x59
/* ADC digital audio processing (high pass filter & auto gain control */
#define AC100_ADC_DAP_L_STA 0x80
#define AC100_ADC_DAP_R_STA 0x81
#define AC100_ADC_DAP_L_CTRL 0x82
#define AC100_ADC_DAP_R_CTRL 0x83
#define AC100_ADC_DAP_L_T_L 0x84 /* Left Target Level */
#define AC100_ADC_DAP_R_T_L 0x85 /* Right Target Level */
#define AC100_ADC_DAP_L_H_A_C 0x86 /* Left High Avg. Coef */
#define AC100_ADC_DAP_L_L_A_C 0x87 /* Left Low Avg. Coef */
#define AC100_ADC_DAP_R_H_A_C 0x88 /* Right High Avg. Coef */
#define AC100_ADC_DAP_R_L_A_C 0x89 /* Right Low Avg. Coef */
#define AC100_ADC_DAP_L_D_T 0x8a /* Left Decay Time */
#define AC100_ADC_DAP_L_A_T 0x8b /* Left Attack Time */
#define AC100_ADC_DAP_R_D_T 0x8c /* Right Decay Time */
#define AC100_ADC_DAP_R_A_T 0x8d /* Right Attack Time */
#define AC100_ADC_DAP_N_TH 0x8e /* Noise Threshold */
#define AC100_ADC_DAP_L_H_N_A_C 0x8f /* Left High Noise Avg. Coef */
#define AC100_ADC_DAP_L_L_N_A_C 0x90 /* Left Low Noise Avg. Coef */
#define AC100_ADC_DAP_R_H_N_A_C 0x91 /* Right High Noise Avg. Coef */
#define AC100_ADC_DAP_R_L_N_A_C 0x92 /* Right Low Noise Avg. Coef */
#define AC100_ADC_DAP_H_HPF_C 0x93 /* High High-Pass-Filter Coef */
#define AC100_ADC_DAP_L_HPF_C 0x94 /* Low High-Pass-Filter Coef */
#define AC100_ADC_DAP_OPT 0x95 /* AGC Optimum */
/* DAC digital audio processing (high pass filter & dynamic range control) */
#define AC100_DAC_DAP_CTRL 0xa0
#define AC100_DAC_DAP_H_HPF_C 0xa1 /* High High-Pass-Filter Coef */
#define AC100_DAC_DAP_L_HPF_C 0xa2 /* Low High-Pass-Filter Coef */
#define AC100_DAC_DAP_L_H_E_A_C 0xa3 /* Left High Energy Avg Coef */
#define AC100_DAC_DAP_L_L_E_A_C 0xa4 /* Left Low Energy Avg Coef */
#define AC100_DAC_DAP_R_H_E_A_C 0xa5 /* Right High Energy Avg Coef */
#define AC100_DAC_DAP_R_L_E_A_C 0xa6 /* Right Low Energy Avg Coef */
#define AC100_DAC_DAP_H_G_D_T_C 0xa7 /* High Gain Delay Time Coef */
#define AC100_DAC_DAP_L_G_D_T_C 0xa8 /* Low Gain Delay Time Coef */
#define AC100_DAC_DAP_H_G_A_T_C 0xa9 /* High Gain Attack Time Coef */
#define AC100_DAC_DAP_L_G_A_T_C 0xaa /* Low Gain Attack Time Coef */
#define AC100_DAC_DAP_H_E_TH 0xab /* High Energy Threshold */
#define AC100_DAC_DAP_L_E_TH 0xac /* Low Energy Threshold */
#define AC100_DAC_DAP_H_G_K 0xad /* High Gain K parameter */
#define AC100_DAC_DAP_L_G_K 0xae /* Low Gain K parameter */
#define AC100_DAC_DAP_H_G_OFF 0xaf /* High Gain offset */
#define AC100_DAC_DAP_L_G_OFF 0xb0 /* Low Gain offset */
#define AC100_DAC_DAP_OPT 0xb1 /* DRC optimum */
/* Digital audio processing enable */
#define AC100_ADC_DAP_ENA 0xb4
#define AC100_DAC_DAP_ENA 0xb5
/* SRC control */
#define AC100_SRC1_CTRL1 0xb8
#define AC100_SRC1_CTRL2 0xb9
#define AC100_SRC1_CTRL3 0xba
#define AC100_SRC1_CTRL4 0xbb
#define AC100_SRC2_CTRL1 0xbc
#define AC100_SRC2_CTRL2 0xbd
#define AC100_SRC2_CTRL3 0xbe
#define AC100_SRC2_CTRL4 0xbf
/* RTC clk control */
#define AC100_CLK32K_ANALOG_CTRL 0xc0
#define AC100_CLKOUT_CTRL1 0xc1
#define AC100_CLKOUT_CTRL2 0xc2
#define AC100_CLKOUT_CTRL3 0xc3
/* RTC module */
#define AC100_RTC_RST 0xc6
#define AC100_RTC_CTRL 0xc7
#define AC100_RTC_SEC 0xc8 /* second */
#define AC100_RTC_MIN 0xc9 /* minute */
#define AC100_RTC_HOU 0xca /* hour */
#define AC100_RTC_WEE 0xcb /* weekday */
#define AC100_RTC_DAY 0xcc /* day */
#define AC100_RTC_MON 0xcd /* month */
#define AC100_RTC_YEA 0xce /* year */
#define AC100_RTC_UPD 0xcf /* update trigger */
/* RTC alarm */
#define AC100_ALM_INT_ENA 0xd0
#define AC100_ALM_INT_STA 0xd1
#define AC100_ALM_SEC 0xd8
#define AC100_ALM_MIN 0xd9
#define AC100_ALM_HOU 0xda
#define AC100_ALM_WEE 0xdb
#define AC100_ALM_DAY 0xdc
#define AC100_ALM_MON 0xdd
#define AC100_ALM_YEA 0xde
#define AC100_ALM_UPD 0xdf
/* RTC general purpose register 0 ~ 15 */
#define AC100_RTC_GP(x) (0xe0 + (x))
#endif /* __LINUX_MFD_AC100_H */