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134 lines
4.2 KiB
134 lines
4.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* MFD core driver for X-Powers' AC100 Audio Codec IC |
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* |
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* The AC100 is a highly integrated audio codec and RTC subsystem designed |
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* for mobile applications. It has 3 I2S/PCM interfaces, a 2 channel DAC, |
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* a 2 channel ADC with 5 inputs and a builtin mixer. The RTC subsystem has |
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* 3 clock outputs. |
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* |
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* The audio codec and RTC parts are completely separate, sharing only the |
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* host interface for access to its registers. |
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* |
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* Copyright (2016) Chen-Yu Tsai |
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* |
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* Author: Chen-Yu Tsai <[email protected]> |
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*/ |
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#include <linux/interrupt.h> |
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#include <linux/kernel.h> |
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#include <linux/mfd/core.h> |
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#include <linux/mfd/ac100.h> |
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#include <linux/module.h> |
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#include <linux/of.h> |
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#include <linux/regmap.h> |
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#include <linux/sunxi-rsb.h> |
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static const struct regmap_range ac100_writeable_ranges[] = { |
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regmap_reg_range(AC100_CHIP_AUDIO_RST, AC100_I2S_SR_CTRL), |
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regmap_reg_range(AC100_I2S1_CLK_CTRL, AC100_I2S1_MXR_GAIN), |
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regmap_reg_range(AC100_I2S2_CLK_CTRL, AC100_I2S2_MXR_GAIN), |
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regmap_reg_range(AC100_I2S3_CLK_CTRL, AC100_I2S3_SIG_PATH_CTRL), |
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regmap_reg_range(AC100_ADC_DIG_CTRL, AC100_ADC_VOL_CTRL), |
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regmap_reg_range(AC100_HMIC_CTRL1, AC100_HMIC_STATUS), |
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regmap_reg_range(AC100_DAC_DIG_CTRL, AC100_DAC_MXR_GAIN), |
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regmap_reg_range(AC100_ADC_APC_CTRL, AC100_LINEOUT_CTRL), |
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regmap_reg_range(AC100_ADC_DAP_L_CTRL, AC100_ADC_DAP_OPT), |
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regmap_reg_range(AC100_DAC_DAP_CTRL, AC100_DAC_DAP_OPT), |
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regmap_reg_range(AC100_ADC_DAP_ENA, AC100_DAC_DAP_ENA), |
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regmap_reg_range(AC100_SRC1_CTRL1, AC100_SRC1_CTRL2), |
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regmap_reg_range(AC100_SRC2_CTRL1, AC100_SRC2_CTRL2), |
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regmap_reg_range(AC100_CLK32K_ANALOG_CTRL, AC100_CLKOUT_CTRL3), |
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regmap_reg_range(AC100_RTC_RST, AC100_RTC_UPD), |
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regmap_reg_range(AC100_ALM_INT_ENA, AC100_ALM_INT_STA), |
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regmap_reg_range(AC100_ALM_SEC, AC100_RTC_GP(15)), |
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}; |
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static const struct regmap_range ac100_volatile_ranges[] = { |
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regmap_reg_range(AC100_CHIP_AUDIO_RST, AC100_PLL_CTRL2), |
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regmap_reg_range(AC100_HMIC_STATUS, AC100_HMIC_STATUS), |
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regmap_reg_range(AC100_ADC_DAP_L_STA, AC100_ADC_DAP_L_STA), |
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regmap_reg_range(AC100_SRC1_CTRL1, AC100_SRC1_CTRL1), |
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regmap_reg_range(AC100_SRC1_CTRL3, AC100_SRC2_CTRL1), |
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regmap_reg_range(AC100_SRC2_CTRL3, AC100_SRC2_CTRL4), |
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regmap_reg_range(AC100_RTC_RST, AC100_RTC_RST), |
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regmap_reg_range(AC100_RTC_SEC, AC100_ALM_INT_STA), |
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regmap_reg_range(AC100_ALM_SEC, AC100_ALM_UPD), |
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}; |
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static const struct regmap_access_table ac100_writeable_table = { |
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.yes_ranges = ac100_writeable_ranges, |
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.n_yes_ranges = ARRAY_SIZE(ac100_writeable_ranges), |
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}; |
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static const struct regmap_access_table ac100_volatile_table = { |
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.yes_ranges = ac100_volatile_ranges, |
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.n_yes_ranges = ARRAY_SIZE(ac100_volatile_ranges), |
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}; |
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static const struct regmap_config ac100_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 16, |
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.wr_table = &ac100_writeable_table, |
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.volatile_table = &ac100_volatile_table, |
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.max_register = AC100_RTC_GP(15), |
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.cache_type = REGCACHE_RBTREE, |
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}; |
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static struct mfd_cell ac100_cells[] = { |
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{ |
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.name = "ac100-codec", |
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.of_compatible = "x-powers,ac100-codec", |
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}, { |
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.name = "ac100-rtc", |
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.of_compatible = "x-powers,ac100-rtc", |
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}, |
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}; |
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static int ac100_rsb_probe(struct sunxi_rsb_device *rdev) |
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{ |
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struct ac100_dev *ac100; |
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int ret; |
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ac100 = devm_kzalloc(&rdev->dev, sizeof(*ac100), GFP_KERNEL); |
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if (!ac100) |
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return -ENOMEM; |
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ac100->dev = &rdev->dev; |
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sunxi_rsb_device_set_drvdata(rdev, ac100); |
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ac100->regmap = devm_regmap_init_sunxi_rsb(rdev, &ac100_regmap_config); |
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if (IS_ERR(ac100->regmap)) { |
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ret = PTR_ERR(ac100->regmap); |
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dev_err(ac100->dev, "regmap init failed: %d\n", ret); |
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return ret; |
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} |
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ret = devm_mfd_add_devices(ac100->dev, PLATFORM_DEVID_NONE, ac100_cells, |
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ARRAY_SIZE(ac100_cells), NULL, 0, NULL); |
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if (ret) { |
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dev_err(ac100->dev, "failed to add MFD devices: %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 const struct of_device_id ac100_of_match[] = { |
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{ .compatible = "x-powers,ac100" }, |
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{ }, |
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}; |
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MODULE_DEVICE_TABLE(of, ac100_of_match); |
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static struct sunxi_rsb_driver ac100_rsb_driver = { |
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.driver = { |
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.name = "ac100", |
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.of_match_table = of_match_ptr(ac100_of_match), |
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}, |
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.probe = ac100_rsb_probe, |
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}; |
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module_sunxi_rsb_driver(ac100_rsb_driver); |
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MODULE_DESCRIPTION("Audio codec MFD core driver for AC100"); |
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MODULE_AUTHOR("Chen-Yu Tsai <[email protected]>"); |
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MODULE_LICENSE("GPL v2");
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