/* * 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");