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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6d3ef8d8f9
The Kconfig currently controlling compilation of these files are: drivers/acpi/Kconfig:menuconfig PMIC_OPREGION drivers/acpi/Kconfig: bool "PMIC (Power Management Integrated Circuit) operation region support" drivers/acpi/Kconfig:config BXT_WC_PMIC_OPREGION drivers/acpi/Kconfig: bool "ACPI operation region support for BXT WhiskeyCove PMIC" drivers/acpi/Kconfig:config XPOWER_PMIC_OPREGION drivers/acpi/Kconfig: bool "ACPI operation region support for XPower AXP288 PMIC" ...meaning they currently are not being built as a module by anyone. Lets remove the couple traces of modular infrastructure use, so that when reading the code there is no doubt it is builtin-only. We delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. One file was using module_init. Since module_init translates to device_initcall in the non-modular case, the init ordering remains unchanged with this commit. In one case we replace the module.h with export.h since that file is exporting some symbols, but does not use __init. The other two are using __init and so module.h gets replaced with init.h there. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
266 lines
5.2 KiB
C
266 lines
5.2 KiB
C
/*
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* intel_pmic_xpower.c - XPower AXP288 PMIC operation region driver
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*
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* Copyright (C) 2014 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/init.h>
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#include <linux/acpi.h>
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#include <linux/mfd/axp20x.h>
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#include <linux/regmap.h>
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#include <linux/platform_device.h>
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#include <linux/iio/consumer.h>
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#include "intel_pmic.h"
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#define XPOWER_GPADC_LOW 0x5b
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static struct pmic_table power_table[] = {
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{
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.address = 0x00,
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.reg = 0x13,
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.bit = 0x05,
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},
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{
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.address = 0x04,
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.reg = 0x13,
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.bit = 0x06,
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},
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{
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.address = 0x08,
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.reg = 0x13,
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.bit = 0x07,
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},
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{
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.address = 0x0c,
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.reg = 0x12,
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.bit = 0x03,
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},
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{
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.address = 0x10,
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.reg = 0x12,
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.bit = 0x04,
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},
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{
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.address = 0x14,
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.reg = 0x12,
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.bit = 0x05,
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},
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{
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.address = 0x18,
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.reg = 0x12,
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.bit = 0x06,
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},
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{
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.address = 0x1c,
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.reg = 0x12,
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.bit = 0x00,
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},
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{
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.address = 0x20,
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.reg = 0x12,
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.bit = 0x01,
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},
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{
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.address = 0x24,
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.reg = 0x12,
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.bit = 0x02,
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},
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{
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.address = 0x28,
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.reg = 0x13,
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.bit = 0x02,
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},
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{
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.address = 0x2c,
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.reg = 0x13,
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.bit = 0x03,
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},
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{
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.address = 0x30,
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.reg = 0x13,
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.bit = 0x04,
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},
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{
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.address = 0x38,
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.reg = 0x10,
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.bit = 0x03,
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},
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{
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.address = 0x3c,
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.reg = 0x10,
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.bit = 0x06,
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},
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{
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.address = 0x40,
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.reg = 0x10,
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.bit = 0x05,
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},
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{
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.address = 0x44,
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.reg = 0x10,
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.bit = 0x04,
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},
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{
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.address = 0x48,
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.reg = 0x10,
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.bit = 0x01,
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},
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{
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.address = 0x4c,
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.reg = 0x10,
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.bit = 0x00
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},
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};
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/* TMP0 - TMP5 are the same, all from GPADC */
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static struct pmic_table thermal_table[] = {
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{
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.address = 0x00,
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.reg = XPOWER_GPADC_LOW
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},
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{
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.address = 0x0c,
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.reg = XPOWER_GPADC_LOW
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},
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{
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.address = 0x18,
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.reg = XPOWER_GPADC_LOW
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},
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{
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.address = 0x24,
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.reg = XPOWER_GPADC_LOW
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},
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{
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.address = 0x30,
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.reg = XPOWER_GPADC_LOW
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},
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{
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.address = 0x3c,
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.reg = XPOWER_GPADC_LOW
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},
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};
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static int intel_xpower_pmic_get_power(struct regmap *regmap, int reg,
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int bit, 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 & BIT(bit)) ? 1 : 0;
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return 0;
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}
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static int intel_xpower_pmic_update_power(struct regmap *regmap, int reg,
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int bit, bool on)
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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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if (on)
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data |= BIT(bit);
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else
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data &= ~BIT(bit);
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if (regmap_write(regmap, reg, data))
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return -EIO;
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return 0;
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}
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/**
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* intel_xpower_pmic_get_raw_temp(): Get raw temperature reading from the PMIC
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*
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* @regmap: regmap of the PMIC device
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* @reg: register to get the reading
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*
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* We could get the sensor value by manipulating the HW regs here, but since
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* the axp288 IIO driver may also access the same regs at the same time, the
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* APIs provided by IIO subsystem are used here instead to avoid problems. As
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* a result, the two passed in params are of no actual use.
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*
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* Return a positive value on success, errno on failure.
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*/
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static int intel_xpower_pmic_get_raw_temp(struct regmap *regmap, int reg)
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{
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struct iio_channel *gpadc_chan;
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int ret, val;
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gpadc_chan = iio_channel_get(NULL, "axp288-system-temp");
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if (IS_ERR_OR_NULL(gpadc_chan))
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return -EACCES;
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ret = iio_read_channel_raw(gpadc_chan, &val);
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if (ret < 0)
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val = ret;
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iio_channel_release(gpadc_chan);
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return val;
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}
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static struct intel_pmic_opregion_data intel_xpower_pmic_opregion_data = {
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.get_power = intel_xpower_pmic_get_power,
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.update_power = intel_xpower_pmic_update_power,
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.get_raw_temp = intel_xpower_pmic_get_raw_temp,
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.power_table = power_table,
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.power_table_count = ARRAY_SIZE(power_table),
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.thermal_table = thermal_table,
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.thermal_table_count = ARRAY_SIZE(thermal_table),
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};
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static acpi_status intel_xpower_pmic_gpio_handler(u32 function,
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acpi_physical_address address, u32 bit_width, u64 *value,
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void *handler_context, void *region_context)
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{
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return AE_OK;
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}
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static int intel_xpower_pmic_opregion_probe(struct platform_device *pdev)
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{
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struct device *parent = pdev->dev.parent;
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struct axp20x_dev *axp20x = dev_get_drvdata(parent);
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acpi_status status;
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int result;
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status = acpi_install_address_space_handler(ACPI_HANDLE(parent),
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ACPI_ADR_SPACE_GPIO, intel_xpower_pmic_gpio_handler,
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NULL, NULL);
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if (ACPI_FAILURE(status))
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return -ENODEV;
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result = intel_pmic_install_opregion_handler(&pdev->dev,
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ACPI_HANDLE(parent), axp20x->regmap,
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&intel_xpower_pmic_opregion_data);
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if (result)
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acpi_remove_address_space_handler(ACPI_HANDLE(parent),
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ACPI_ADR_SPACE_GPIO,
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intel_xpower_pmic_gpio_handler);
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return result;
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}
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static struct platform_driver intel_xpower_pmic_opregion_driver = {
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.probe = intel_xpower_pmic_opregion_probe,
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.driver = {
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.name = "axp288_pmic_acpi",
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},
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};
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static int __init intel_xpower_pmic_opregion_driver_init(void)
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{
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return platform_driver_register(&intel_xpower_pmic_opregion_driver);
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}
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device_initcall(intel_xpower_pmic_opregion_driver_init);
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