mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
308 lines
6.5 KiB
308 lines
6.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* XPower AXP288 PMIC operation region driver |
|
* |
|
* Copyright (C) 2014 Intel Corporation. All rights reserved. |
|
*/ |
|
|
|
#include <linux/acpi.h> |
|
#include <linux/init.h> |
|
#include <linux/mfd/axp20x.h> |
|
#include <linux/regmap.h> |
|
#include <linux/platform_device.h> |
|
#include <asm/iosf_mbi.h> |
|
#include "intel_pmic.h" |
|
|
|
#define XPOWER_GPADC_LOW 0x5b |
|
#define XPOWER_GPI1_CTRL 0x92 |
|
|
|
#define GPI1_LDO_MASK GENMASK(2, 0) |
|
#define GPI1_LDO_ON (3 << 0) |
|
#define GPI1_LDO_OFF (4 << 0) |
|
|
|
#define AXP288_ADC_TS_CURRENT_ON_OFF_MASK GENMASK(1, 0) |
|
#define AXP288_ADC_TS_CURRENT_OFF (0 << 0) |
|
#define AXP288_ADC_TS_CURRENT_ON_WHEN_CHARGING (1 << 0) |
|
#define AXP288_ADC_TS_CURRENT_ON_ONDEMAND (2 << 0) |
|
#define AXP288_ADC_TS_CURRENT_ON (3 << 0) |
|
|
|
static struct pmic_table power_table[] = { |
|
{ |
|
.address = 0x00, |
|
.reg = 0x13, |
|
.bit = 0x05, |
|
}, /* ALD1 */ |
|
{ |
|
.address = 0x04, |
|
.reg = 0x13, |
|
.bit = 0x06, |
|
}, /* ALD2 */ |
|
{ |
|
.address = 0x08, |
|
.reg = 0x13, |
|
.bit = 0x07, |
|
}, /* ALD3 */ |
|
{ |
|
.address = 0x0c, |
|
.reg = 0x12, |
|
.bit = 0x03, |
|
}, /* DLD1 */ |
|
{ |
|
.address = 0x10, |
|
.reg = 0x12, |
|
.bit = 0x04, |
|
}, /* DLD2 */ |
|
{ |
|
.address = 0x14, |
|
.reg = 0x12, |
|
.bit = 0x05, |
|
}, /* DLD3 */ |
|
{ |
|
.address = 0x18, |
|
.reg = 0x12, |
|
.bit = 0x06, |
|
}, /* DLD4 */ |
|
{ |
|
.address = 0x1c, |
|
.reg = 0x12, |
|
.bit = 0x00, |
|
}, /* ELD1 */ |
|
{ |
|
.address = 0x20, |
|
.reg = 0x12, |
|
.bit = 0x01, |
|
}, /* ELD2 */ |
|
{ |
|
.address = 0x24, |
|
.reg = 0x12, |
|
.bit = 0x02, |
|
}, /* ELD3 */ |
|
{ |
|
.address = 0x28, |
|
.reg = 0x13, |
|
.bit = 0x02, |
|
}, /* FLD1 */ |
|
{ |
|
.address = 0x2c, |
|
.reg = 0x13, |
|
.bit = 0x03, |
|
}, /* FLD2 */ |
|
{ |
|
.address = 0x30, |
|
.reg = 0x13, |
|
.bit = 0x04, |
|
}, /* FLD3 */ |
|
{ |
|
.address = 0x34, |
|
.reg = 0x10, |
|
.bit = 0x03, |
|
}, /* BUC1 */ |
|
{ |
|
.address = 0x38, |
|
.reg = 0x10, |
|
.bit = 0x06, |
|
}, /* BUC2 */ |
|
{ |
|
.address = 0x3c, |
|
.reg = 0x10, |
|
.bit = 0x05, |
|
}, /* BUC3 */ |
|
{ |
|
.address = 0x40, |
|
.reg = 0x10, |
|
.bit = 0x04, |
|
}, /* BUC4 */ |
|
{ |
|
.address = 0x44, |
|
.reg = 0x10, |
|
.bit = 0x01, |
|
}, /* BUC5 */ |
|
{ |
|
.address = 0x48, |
|
.reg = 0x10, |
|
.bit = 0x00 |
|
}, /* BUC6 */ |
|
{ |
|
.address = 0x4c, |
|
.reg = 0x92, |
|
}, /* GPI1 */ |
|
}; |
|
|
|
/* TMP0 - TMP5 are the same, all from GPADC */ |
|
static struct pmic_table thermal_table[] = { |
|
{ |
|
.address = 0x00, |
|
.reg = XPOWER_GPADC_LOW |
|
}, |
|
{ |
|
.address = 0x0c, |
|
.reg = XPOWER_GPADC_LOW |
|
}, |
|
{ |
|
.address = 0x18, |
|
.reg = XPOWER_GPADC_LOW |
|
}, |
|
{ |
|
.address = 0x24, |
|
.reg = XPOWER_GPADC_LOW |
|
}, |
|
{ |
|
.address = 0x30, |
|
.reg = XPOWER_GPADC_LOW |
|
}, |
|
{ |
|
.address = 0x3c, |
|
.reg = XPOWER_GPADC_LOW |
|
}, |
|
}; |
|
|
|
static int intel_xpower_pmic_get_power(struct regmap *regmap, int reg, |
|
int bit, u64 *value) |
|
{ |
|
int data; |
|
|
|
if (regmap_read(regmap, reg, &data)) |
|
return -EIO; |
|
|
|
/* GPIO1 LDO regulator needs special handling */ |
|
if (reg == XPOWER_GPI1_CTRL) |
|
*value = ((data & GPI1_LDO_MASK) == GPI1_LDO_ON); |
|
else |
|
*value = (data & BIT(bit)) ? 1 : 0; |
|
|
|
return 0; |
|
} |
|
|
|
static int intel_xpower_pmic_update_power(struct regmap *regmap, int reg, |
|
int bit, bool on) |
|
{ |
|
int data, ret; |
|
|
|
/* GPIO1 LDO regulator needs special handling */ |
|
if (reg == XPOWER_GPI1_CTRL) |
|
return regmap_update_bits(regmap, reg, GPI1_LDO_MASK, |
|
on ? GPI1_LDO_ON : GPI1_LDO_OFF); |
|
|
|
ret = iosf_mbi_block_punit_i2c_access(); |
|
if (ret) |
|
return ret; |
|
|
|
if (regmap_read(regmap, reg, &data)) { |
|
ret = -EIO; |
|
goto out; |
|
} |
|
|
|
if (on) |
|
data |= BIT(bit); |
|
else |
|
data &= ~BIT(bit); |
|
|
|
if (regmap_write(regmap, reg, data)) |
|
ret = -EIO; |
|
out: |
|
iosf_mbi_unblock_punit_i2c_access(); |
|
|
|
return ret; |
|
} |
|
|
|
/** |
|
* intel_xpower_pmic_get_raw_temp(): Get raw temperature reading from the PMIC |
|
* |
|
* @regmap: regmap of the PMIC device |
|
* @reg: register to get the reading |
|
* |
|
* Return a positive value on success, errno on failure. |
|
*/ |
|
static int intel_xpower_pmic_get_raw_temp(struct regmap *regmap, int reg) |
|
{ |
|
int ret, adc_ts_pin_ctrl; |
|
u8 buf[2]; |
|
|
|
/* |
|
* The current-source used for the battery temp-sensor (TS) is shared |
|
* with the GPADC. For proper fuel-gauge and charger operation the TS |
|
* current-source needs to be permanently on. But to read the GPADC we |
|
* need to temporary switch the TS current-source to ondemand, so that |
|
* the GPADC can use it, otherwise we will always read an all 0 value. |
|
* |
|
* Note that the switching from on to on-ondemand is not necessary |
|
* when the TS current-source is off (this happens on devices which |
|
* do not use the TS-pin). |
|
*/ |
|
ret = regmap_read(regmap, AXP288_ADC_TS_PIN_CTRL, &adc_ts_pin_ctrl); |
|
if (ret) |
|
return ret; |
|
|
|
if (adc_ts_pin_ctrl & AXP288_ADC_TS_CURRENT_ON_OFF_MASK) { |
|
ret = regmap_update_bits(regmap, AXP288_ADC_TS_PIN_CTRL, |
|
AXP288_ADC_TS_CURRENT_ON_OFF_MASK, |
|
AXP288_ADC_TS_CURRENT_ON_ONDEMAND); |
|
if (ret) |
|
return ret; |
|
|
|
/* Wait a bit after switching the current-source */ |
|
usleep_range(6000, 10000); |
|
} |
|
|
|
ret = regmap_bulk_read(regmap, AXP288_GP_ADC_H, buf, 2); |
|
if (ret == 0) |
|
ret = (buf[0] << 4) + ((buf[1] >> 4) & 0x0f); |
|
|
|
if (adc_ts_pin_ctrl & AXP288_ADC_TS_CURRENT_ON_OFF_MASK) { |
|
regmap_update_bits(regmap, AXP288_ADC_TS_PIN_CTRL, |
|
AXP288_ADC_TS_CURRENT_ON_OFF_MASK, |
|
AXP288_ADC_TS_CURRENT_ON); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static struct intel_pmic_opregion_data intel_xpower_pmic_opregion_data = { |
|
.get_power = intel_xpower_pmic_get_power, |
|
.update_power = intel_xpower_pmic_update_power, |
|
.get_raw_temp = intel_xpower_pmic_get_raw_temp, |
|
.power_table = power_table, |
|
.power_table_count = ARRAY_SIZE(power_table), |
|
.thermal_table = thermal_table, |
|
.thermal_table_count = ARRAY_SIZE(thermal_table), |
|
.pmic_i2c_address = 0x34, |
|
}; |
|
|
|
static acpi_status intel_xpower_pmic_gpio_handler(u32 function, |
|
acpi_physical_address address, u32 bit_width, u64 *value, |
|
void *handler_context, void *region_context) |
|
{ |
|
return AE_OK; |
|
} |
|
|
|
static int intel_xpower_pmic_opregion_probe(struct platform_device *pdev) |
|
{ |
|
struct device *parent = pdev->dev.parent; |
|
struct axp20x_dev *axp20x = dev_get_drvdata(parent); |
|
acpi_status status; |
|
int result; |
|
|
|
status = acpi_install_address_space_handler(ACPI_HANDLE(parent), |
|
ACPI_ADR_SPACE_GPIO, intel_xpower_pmic_gpio_handler, |
|
NULL, NULL); |
|
if (ACPI_FAILURE(status)) |
|
return -ENODEV; |
|
|
|
result = intel_pmic_install_opregion_handler(&pdev->dev, |
|
ACPI_HANDLE(parent), axp20x->regmap, |
|
&intel_xpower_pmic_opregion_data); |
|
if (result) |
|
acpi_remove_address_space_handler(ACPI_HANDLE(parent), |
|
ACPI_ADR_SPACE_GPIO, |
|
intel_xpower_pmic_gpio_handler); |
|
|
|
return result; |
|
} |
|
|
|
static struct platform_driver intel_xpower_pmic_opregion_driver = { |
|
.probe = intel_xpower_pmic_opregion_probe, |
|
.driver = { |
|
.name = "axp288_pmic_acpi", |
|
}, |
|
}; |
|
builtin_platform_driver(intel_xpower_pmic_opregion_driver);
|
|
|