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136 lines
3.2 KiB
136 lines
3.2 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Dollar Cove TI PMIC operation region driver |
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* Copyright (C) 2014 Intel Corporation. All rights reserved. |
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* |
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* Rewritten and cleaned up |
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* Copyright (C) 2017 Takashi Iwai <[email protected]> |
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*/ |
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#include <linux/acpi.h> |
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#include <linux/init.h> |
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#include <linux/mfd/intel_soc_pmic.h> |
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#include <linux/platform_device.h> |
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#include "intel_pmic.h" |
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/* registers stored in 16bit BE (high:low, total 10bit) */ |
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#define CHTDC_TI_VBAT 0x54 |
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#define CHTDC_TI_DIETEMP 0x56 |
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#define CHTDC_TI_BPTHERM 0x58 |
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#define CHTDC_TI_GPADC 0x5a |
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static struct pmic_table chtdc_ti_power_table[] = { |
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{ .address = 0x00, .reg = 0x41 }, |
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{ .address = 0x04, .reg = 0x42 }, |
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{ .address = 0x08, .reg = 0x43 }, |
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{ .address = 0x0c, .reg = 0x45 }, |
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{ .address = 0x10, .reg = 0x46 }, |
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{ .address = 0x14, .reg = 0x47 }, |
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{ .address = 0x18, .reg = 0x48 }, |
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{ .address = 0x1c, .reg = 0x49 }, |
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{ .address = 0x20, .reg = 0x4a }, |
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{ .address = 0x24, .reg = 0x4b }, |
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{ .address = 0x28, .reg = 0x4c }, |
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{ .address = 0x2c, .reg = 0x4d }, |
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{ .address = 0x30, .reg = 0x4e }, |
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}; |
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static struct pmic_table chtdc_ti_thermal_table[] = { |
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{ |
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.address = 0x00, |
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.reg = CHTDC_TI_GPADC |
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}, |
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{ |
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.address = 0x0c, |
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.reg = CHTDC_TI_GPADC |
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}, |
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/* TMP2 -> SYSTEMP */ |
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{ |
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.address = 0x18, |
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.reg = CHTDC_TI_GPADC |
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}, |
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/* TMP3 -> BPTHERM */ |
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{ |
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.address = 0x24, |
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.reg = CHTDC_TI_BPTHERM |
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}, |
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{ |
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.address = 0x30, |
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.reg = CHTDC_TI_GPADC |
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}, |
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/* TMP5 -> DIETEMP */ |
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{ |
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.address = 0x3c, |
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.reg = CHTDC_TI_DIETEMP |
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}, |
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}; |
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static int chtdc_ti_pmic_get_power(struct regmap *regmap, int reg, int bit, |
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u64 *value) |
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{ |
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int data; |
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if (regmap_read(regmap, reg, &data)) |
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return -EIO; |
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*value = data & 1; |
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return 0; |
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} |
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static int chtdc_ti_pmic_update_power(struct regmap *regmap, int reg, int bit, |
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bool on) |
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{ |
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return regmap_update_bits(regmap, reg, 1, on); |
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} |
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static int chtdc_ti_pmic_get_raw_temp(struct regmap *regmap, int reg) |
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{ |
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u8 buf[2]; |
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if (regmap_bulk_read(regmap, reg, buf, 2)) |
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return -EIO; |
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/* stored in big-endian */ |
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return ((buf[0] & 0x03) << 8) | buf[1]; |
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} |
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static struct intel_pmic_opregion_data chtdc_ti_pmic_opregion_data = { |
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.get_power = chtdc_ti_pmic_get_power, |
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.update_power = chtdc_ti_pmic_update_power, |
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.get_raw_temp = chtdc_ti_pmic_get_raw_temp, |
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.power_table = chtdc_ti_power_table, |
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.power_table_count = ARRAY_SIZE(chtdc_ti_power_table), |
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.thermal_table = chtdc_ti_thermal_table, |
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.thermal_table_count = ARRAY_SIZE(chtdc_ti_thermal_table), |
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.pmic_i2c_address = 0x5e, |
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}; |
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static int chtdc_ti_pmic_opregion_probe(struct platform_device *pdev) |
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{ |
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struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent); |
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int err; |
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err = intel_pmic_install_opregion_handler(&pdev->dev, |
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ACPI_HANDLE(pdev->dev.parent), pmic->regmap, |
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&chtdc_ti_pmic_opregion_data); |
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if (err < 0) |
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return err; |
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/* Re-enumerate devices depending on PMIC */ |
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acpi_dev_clear_dependencies(ACPI_COMPANION(pdev->dev.parent)); |
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return 0; |
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} |
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static const struct platform_device_id chtdc_ti_pmic_opregion_id_table[] = { |
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{ .name = "chtdc_ti_region" }, |
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{}, |
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}; |
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static struct platform_driver chtdc_ti_pmic_opregion_driver = { |
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.probe = chtdc_ti_pmic_opregion_probe, |
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.driver = { |
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.name = "cht_dollar_cove_ti_pmic", |
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}, |
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.id_table = chtdc_ti_pmic_opregion_id_table, |
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}; |
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builtin_platform_driver(chtdc_ti_pmic_opregion_driver);
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