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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * MFD core driver for X-Powers' AC100 Audio Codec IC4 *5 * The AC100 is a highly integrated audio codec and RTC subsystem designed6 * for mobile applications. It has 3 I2S/PCM interfaces, a 2 channel DAC,7 * a 2 channel ADC with 5 inputs and a builtin mixer. The RTC subsystem has8 * 3 clock outputs.9 *10 * The audio codec and RTC parts are completely separate, sharing only the11 * host interface for access to its registers.12 *13 * Copyright (2016) Chen-Yu Tsai14 *15 * Author: Chen-Yu Tsai <wens@csie.org>16 */17 18#include <linux/interrupt.h>19#include <linux/kernel.h>20#include <linux/mfd/core.h>21#include <linux/mfd/ac100.h>22#include <linux/module.h>23#include <linux/of.h>24#include <linux/regmap.h>25#include <linux/sunxi-rsb.h>26 27static const struct regmap_range ac100_writeable_ranges[] = {28 regmap_reg_range(AC100_CHIP_AUDIO_RST, AC100_I2S_SR_CTRL),29 regmap_reg_range(AC100_I2S1_CLK_CTRL, AC100_I2S1_MXR_GAIN),30 regmap_reg_range(AC100_I2S2_CLK_CTRL, AC100_I2S2_MXR_GAIN),31 regmap_reg_range(AC100_I2S3_CLK_CTRL, AC100_I2S3_SIG_PATH_CTRL),32 regmap_reg_range(AC100_ADC_DIG_CTRL, AC100_ADC_VOL_CTRL),33 regmap_reg_range(AC100_HMIC_CTRL1, AC100_HMIC_STATUS),34 regmap_reg_range(AC100_DAC_DIG_CTRL, AC100_DAC_MXR_GAIN),35 regmap_reg_range(AC100_ADC_APC_CTRL, AC100_LINEOUT_CTRL),36 regmap_reg_range(AC100_ADC_DAP_L_CTRL, AC100_ADC_DAP_OPT),37 regmap_reg_range(AC100_DAC_DAP_CTRL, AC100_DAC_DAP_OPT),38 regmap_reg_range(AC100_ADC_DAP_ENA, AC100_DAC_DAP_ENA),39 regmap_reg_range(AC100_SRC1_CTRL1, AC100_SRC1_CTRL2),40 regmap_reg_range(AC100_SRC2_CTRL1, AC100_SRC2_CTRL2),41 regmap_reg_range(AC100_CLK32K_ANALOG_CTRL, AC100_CLKOUT_CTRL3),42 regmap_reg_range(AC100_RTC_RST, AC100_RTC_UPD),43 regmap_reg_range(AC100_ALM_INT_ENA, AC100_ALM_INT_STA),44 regmap_reg_range(AC100_ALM_SEC, AC100_RTC_GP(15)),45};46 47static const struct regmap_range ac100_volatile_ranges[] = {48 regmap_reg_range(AC100_CHIP_AUDIO_RST, AC100_PLL_CTRL2),49 regmap_reg_range(AC100_HMIC_STATUS, AC100_HMIC_STATUS),50 regmap_reg_range(AC100_ADC_DAP_L_STA, AC100_ADC_DAP_L_STA),51 regmap_reg_range(AC100_SRC1_CTRL1, AC100_SRC1_CTRL1),52 regmap_reg_range(AC100_SRC1_CTRL3, AC100_SRC2_CTRL1),53 regmap_reg_range(AC100_SRC2_CTRL3, AC100_SRC2_CTRL4),54 regmap_reg_range(AC100_RTC_RST, AC100_RTC_RST),55 regmap_reg_range(AC100_RTC_SEC, AC100_ALM_INT_STA),56 regmap_reg_range(AC100_ALM_SEC, AC100_ALM_UPD),57};58 59static const struct regmap_access_table ac100_writeable_table = {60 .yes_ranges = ac100_writeable_ranges,61 .n_yes_ranges = ARRAY_SIZE(ac100_writeable_ranges),62};63 64static const struct regmap_access_table ac100_volatile_table = {65 .yes_ranges = ac100_volatile_ranges,66 .n_yes_ranges = ARRAY_SIZE(ac100_volatile_ranges),67};68 69static const struct regmap_config ac100_regmap_config = {70 .reg_bits = 8,71 .val_bits = 16,72 .wr_table = &ac100_writeable_table,73 .volatile_table = &ac100_volatile_table,74 .max_register = AC100_RTC_GP(15),75 .cache_type = REGCACHE_MAPLE,76};77 78static struct mfd_cell ac100_cells[] = {79 {80 .name = "ac100-codec",81 .of_compatible = "x-powers,ac100-codec",82 }, {83 .name = "ac100-rtc",84 .of_compatible = "x-powers,ac100-rtc",85 },86};87 88static int ac100_rsb_probe(struct sunxi_rsb_device *rdev)89{90 struct ac100_dev *ac100;91 int ret;92 93 ac100 = devm_kzalloc(&rdev->dev, sizeof(*ac100), GFP_KERNEL);94 if (!ac100)95 return -ENOMEM;96 97 ac100->dev = &rdev->dev;98 sunxi_rsb_device_set_drvdata(rdev, ac100);99 100 ac100->regmap = devm_regmap_init_sunxi_rsb(rdev, &ac100_regmap_config);101 if (IS_ERR(ac100->regmap)) {102 ret = PTR_ERR(ac100->regmap);103 dev_err(ac100->dev, "regmap init failed: %d\n", ret);104 return ret;105 }106 107 ret = devm_mfd_add_devices(ac100->dev, PLATFORM_DEVID_NONE, ac100_cells,108 ARRAY_SIZE(ac100_cells), NULL, 0, NULL);109 if (ret) {110 dev_err(ac100->dev, "failed to add MFD devices: %d\n", ret);111 return ret;112 }113 114 return 0;115}116 117static const struct of_device_id ac100_of_match[] = {118 { .compatible = "x-powers,ac100" },119 { },120};121MODULE_DEVICE_TABLE(of, ac100_of_match);122 123static struct sunxi_rsb_driver ac100_rsb_driver = {124 .driver = {125 .name = "ac100",126 .of_match_table = of_match_ptr(ac100_of_match),127 },128 .probe = ac100_rsb_probe,129};130module_sunxi_rsb_driver(ac100_rsb_driver);131 132MODULE_DESCRIPTION("Audio codec MFD core driver for AC100");133MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");134MODULE_LICENSE("GPL v2");135