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mfd: AXP20x: Add mfd driver for AXP20x PMIC
This patch introduces the preliminary support for PMICs X-Powers AXP202 and AXP209. The AXP209 and AXP202 are the PMUs (Power Management Unit) used by A10, A13 and A20 SoCs and developed by X-Powers, a sister company of Allwinner. The core enables support for two subsystems: - PEK (Power Enable Key) - Regulators Signed-off-by: Carlo Caione <carlo@caione.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Carlo Caione
Lee Jones
parent
45330bb434
commit
cfb61a4196
@ -67,6 +67,18 @@ config MFD_BCM590XX
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help
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Support for the BCM590xx PMUs from Broadcom
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config MFD_AXP20X
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bool "X-Powers AXP20X"
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select MFD_CORE
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select REGMAP_I2C
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select REGMAP_IRQ
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depends on I2C=y
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help
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If you say Y here you get support for the X-Powers AXP202 and AXP209.
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This driver include only the core APIs. You have to select individual
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components like regulators or the PEK (Power Enable Key) under the
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corresponding menus.
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config MFD_CROS_EC
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tristate "ChromeOS Embedded Controller"
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select MFD_CORE
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@ -102,6 +102,7 @@ obj-$(CONFIG_PMIC_DA9052) += da9052-irq.o
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obj-$(CONFIG_PMIC_DA9052) += da9052-core.o
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obj-$(CONFIG_MFD_DA9052_SPI) += da9052-spi.o
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obj-$(CONFIG_MFD_DA9052_I2C) += da9052-i2c.o
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obj-$(CONFIG_MFD_AXP20X) += axp20x.o
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obj-$(CONFIG_MFD_LP3943) += lp3943.o
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obj-$(CONFIG_MFD_LP8788) += lp8788.o lp8788-irq.o
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258
drivers/mfd/axp20x.c
Normal file
258
drivers/mfd/axp20x.c
Normal file
@ -0,0 +1,258 @@
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/*
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* axp20x.c - MFD core driver for the X-Powers AXP202 and AXP209
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*
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* AXP20x comprises an adaptive USB-Compatible PWM charger, 2 BUCK DC-DC
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* converters, 5 LDOs, multiple 12-bit ADCs of voltage, current and temperature
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* as well as 4 configurable GPIOs.
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*
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* Author: Carlo Caione <carlo@caione.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/regulator/consumer.h>
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#include <linux/mfd/axp20x.h>
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#include <linux/mfd/core.h>
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#include <linux/of_device.h>
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#include <linux/of_irq.h>
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#define AXP20X_OFF 0x80
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static const struct regmap_range axp20x_writeable_ranges[] = {
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regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
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regmap_reg_range(AXP20X_DCDC_MODE, AXP20X_FG_RES),
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};
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static const struct regmap_range axp20x_volatile_ranges[] = {
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regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IRQ5_STATE),
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};
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static const struct regmap_access_table axp20x_writeable_table = {
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.yes_ranges = axp20x_writeable_ranges,
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.n_yes_ranges = ARRAY_SIZE(axp20x_writeable_ranges),
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};
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static const struct regmap_access_table axp20x_volatile_table = {
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.yes_ranges = axp20x_volatile_ranges,
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.n_yes_ranges = ARRAY_SIZE(axp20x_volatile_ranges),
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};
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static struct resource axp20x_pek_resources[] = {
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{
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.name = "PEK_DBR",
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.start = AXP20X_IRQ_PEK_RIS_EDGE,
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.end = AXP20X_IRQ_PEK_RIS_EDGE,
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.flags = IORESOURCE_IRQ,
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}, {
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.name = "PEK_DBF",
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.start = AXP20X_IRQ_PEK_FAL_EDGE,
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.end = AXP20X_IRQ_PEK_FAL_EDGE,
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.flags = IORESOURCE_IRQ,
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},
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};
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static const struct regmap_config axp20x_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.wr_table = &axp20x_writeable_table,
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.volatile_table = &axp20x_volatile_table,
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.max_register = AXP20X_FG_RES,
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.cache_type = REGCACHE_RBTREE,
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};
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#define AXP20X_IRQ(_irq, _off, _mask) \
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[AXP20X_IRQ_##_irq] = { .reg_offset = (_off), .mask = BIT(_mask) }
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static const struct regmap_irq axp20x_regmap_irqs[] = {
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AXP20X_IRQ(ACIN_OVER_V, 0, 7),
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AXP20X_IRQ(ACIN_PLUGIN, 0, 6),
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AXP20X_IRQ(ACIN_REMOVAL, 0, 5),
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AXP20X_IRQ(VBUS_OVER_V, 0, 4),
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AXP20X_IRQ(VBUS_PLUGIN, 0, 3),
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AXP20X_IRQ(VBUS_REMOVAL, 0, 2),
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AXP20X_IRQ(VBUS_V_LOW, 0, 1),
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AXP20X_IRQ(BATT_PLUGIN, 1, 7),
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AXP20X_IRQ(BATT_REMOVAL, 1, 6),
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AXP20X_IRQ(BATT_ENT_ACT_MODE, 1, 5),
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AXP20X_IRQ(BATT_EXIT_ACT_MODE, 1, 4),
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AXP20X_IRQ(CHARG, 1, 3),
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AXP20X_IRQ(CHARG_DONE, 1, 2),
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AXP20X_IRQ(BATT_TEMP_HIGH, 1, 1),
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AXP20X_IRQ(BATT_TEMP_LOW, 1, 0),
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AXP20X_IRQ(DIE_TEMP_HIGH, 2, 7),
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AXP20X_IRQ(CHARG_I_LOW, 2, 6),
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AXP20X_IRQ(DCDC1_V_LONG, 2, 5),
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AXP20X_IRQ(DCDC2_V_LONG, 2, 4),
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AXP20X_IRQ(DCDC3_V_LONG, 2, 3),
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AXP20X_IRQ(PEK_SHORT, 2, 1),
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AXP20X_IRQ(PEK_LONG, 2, 0),
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AXP20X_IRQ(N_OE_PWR_ON, 3, 7),
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AXP20X_IRQ(N_OE_PWR_OFF, 3, 6),
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AXP20X_IRQ(VBUS_VALID, 3, 5),
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AXP20X_IRQ(VBUS_NOT_VALID, 3, 4),
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AXP20X_IRQ(VBUS_SESS_VALID, 3, 3),
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AXP20X_IRQ(VBUS_SESS_END, 3, 2),
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AXP20X_IRQ(LOW_PWR_LVL1, 3, 1),
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AXP20X_IRQ(LOW_PWR_LVL2, 3, 0),
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AXP20X_IRQ(TIMER, 4, 7),
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AXP20X_IRQ(PEK_RIS_EDGE, 4, 6),
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AXP20X_IRQ(PEK_FAL_EDGE, 4, 5),
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AXP20X_IRQ(GPIO3_INPUT, 4, 3),
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AXP20X_IRQ(GPIO2_INPUT, 4, 2),
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AXP20X_IRQ(GPIO1_INPUT, 4, 1),
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AXP20X_IRQ(GPIO0_INPUT, 4, 0),
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};
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static const struct of_device_id axp20x_of_match[] = {
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{ .compatible = "x-powers,axp202", .data = (void *) AXP202_ID },
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{ .compatible = "x-powers,axp209", .data = (void *) AXP209_ID },
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{ },
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};
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MODULE_DEVICE_TABLE(of, axp20x_of_match);
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/*
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* This is useless for OF-enabled devices, but it is needed by I2C subsystem
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*/
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static const struct i2c_device_id axp20x_i2c_id[] = {
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
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static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
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.name = "axp20x_irq_chip",
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.status_base = AXP20X_IRQ1_STATE,
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.ack_base = AXP20X_IRQ1_STATE,
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.mask_base = AXP20X_IRQ1_EN,
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.num_regs = 5,
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.irqs = axp20x_regmap_irqs,
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.num_irqs = ARRAY_SIZE(axp20x_regmap_irqs),
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.mask_invert = true,
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.init_ack_masked = true,
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};
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static const char * const axp20x_supplies[] = {
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"acin",
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"vin2",
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"vin3",
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"ldo24in",
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"ldo3in",
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"ldo5in",
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};
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static struct mfd_cell axp20x_cells[] = {
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{
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.name = "axp20x-pek",
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.num_resources = ARRAY_SIZE(axp20x_pek_resources),
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.resources = axp20x_pek_resources,
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}, {
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.name = "axp20x-regulator",
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.parent_supplies = axp20x_supplies,
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.num_parent_supplies = ARRAY_SIZE(axp20x_supplies),
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},
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};
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static struct axp20x_dev *axp20x_pm_power_off;
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static void axp20x_power_off(void)
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{
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regmap_write(axp20x_pm_power_off->regmap, AXP20X_OFF_CTRL,
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AXP20X_OFF);
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}
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static int axp20x_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct axp20x_dev *axp20x;
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const struct of_device_id *of_id;
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int ret;
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axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);
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if (!axp20x)
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return -ENOMEM;
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of_id = of_match_device(axp20x_of_match, &i2c->dev);
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if (!of_id) {
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dev_err(&i2c->dev, "Unable to setup AXP20X data\n");
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return -ENODEV;
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}
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axp20x->variant = (long) of_id->data;
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axp20x->i2c_client = i2c;
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axp20x->dev = &i2c->dev;
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dev_set_drvdata(axp20x->dev, axp20x);
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axp20x->regmap = devm_regmap_init_i2c(i2c, &axp20x_regmap_config);
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if (IS_ERR(axp20x->regmap)) {
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ret = PTR_ERR(axp20x->regmap);
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dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
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return ret;
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}
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ret = regmap_add_irq_chip(axp20x->regmap, i2c->irq,
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IRQF_ONESHOT | IRQF_SHARED, -1,
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&axp20x_regmap_irq_chip,
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&axp20x->regmap_irqc);
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if (ret) {
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dev_err(&i2c->dev, "failed to add irq chip: %d\n", ret);
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return ret;
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}
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ret = mfd_add_devices(axp20x->dev, -1, axp20x_cells,
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ARRAY_SIZE(axp20x_cells), NULL, 0, NULL);
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if (ret) {
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dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret);
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regmap_del_irq_chip(i2c->irq, axp20x->regmap_irqc);
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return ret;
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}
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if (!pm_power_off) {
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axp20x_pm_power_off = axp20x;
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pm_power_off = axp20x_power_off;
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}
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dev_info(&i2c->dev, "AXP20X driver loaded\n");
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return 0;
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}
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static int axp20x_i2c_remove(struct i2c_client *i2c)
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{
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struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);
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if (axp20x == axp20x_pm_power_off) {
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axp20x_pm_power_off = NULL;
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pm_power_off = NULL;
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}
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mfd_remove_devices(axp20x->dev);
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regmap_del_irq_chip(axp20x->i2c_client->irq, axp20x->regmap_irqc);
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return 0;
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}
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static struct i2c_driver axp20x_i2c_driver = {
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.driver = {
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.name = "axp20x",
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.owner = THIS_MODULE,
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.of_match_table = of_match_ptr(axp20x_of_match),
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},
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.probe = axp20x_i2c_probe,
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.remove = axp20x_i2c_remove,
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.id_table = axp20x_i2c_id,
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};
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module_i2c_driver(axp20x_i2c_driver);
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MODULE_DESCRIPTION("PMIC MFD core driver for AXP20X");
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MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
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MODULE_LICENSE("GPL");
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180
include/linux/mfd/axp20x.h
Normal file
180
include/linux/mfd/axp20x.h
Normal file
@ -0,0 +1,180 @@
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/*
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* Functions and registers to access AXP20X power management chip.
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*
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* Copyright (C) 2013, Carlo Caione <carlo@caione.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __LINUX_MFD_AXP20X_H
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#define __LINUX_MFD_AXP20X_H
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enum {
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AXP202_ID = 0,
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AXP209_ID,
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};
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#define AXP20X_DATACACHE(m) (0x04 + (m))
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/* Power supply */
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#define AXP20X_PWR_INPUT_STATUS 0x00
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#define AXP20X_PWR_OP_MODE 0x01
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#define AXP20X_USB_OTG_STATUS 0x02
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#define AXP20X_PWR_OUT_CTRL 0x12
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#define AXP20X_DCDC2_V_OUT 0x23
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#define AXP20X_DCDC2_LDO3_V_SCAL 0x25
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#define AXP20X_DCDC3_V_OUT 0x27
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#define AXP20X_LDO24_V_OUT 0x28
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#define AXP20X_LDO3_V_OUT 0x29
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#define AXP20X_VBUS_IPSOUT_MGMT 0x30
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#define AXP20X_V_OFF 0x31
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#define AXP20X_OFF_CTRL 0x32
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#define AXP20X_CHRG_CTRL1 0x33
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#define AXP20X_CHRG_CTRL2 0x34
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#define AXP20X_CHRG_BAK_CTRL 0x35
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#define AXP20X_PEK_KEY 0x36
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#define AXP20X_DCDC_FREQ 0x37
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#define AXP20X_V_LTF_CHRG 0x38
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#define AXP20X_V_HTF_CHRG 0x39
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#define AXP20X_APS_WARN_L1 0x3a
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#define AXP20X_APS_WARN_L2 0x3b
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#define AXP20X_V_LTF_DISCHRG 0x3c
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#define AXP20X_V_HTF_DISCHRG 0x3d
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/* Interrupt */
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#define AXP20X_IRQ1_EN 0x40
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#define AXP20X_IRQ2_EN 0x41
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#define AXP20X_IRQ3_EN 0x42
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#define AXP20X_IRQ4_EN 0x43
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#define AXP20X_IRQ5_EN 0x44
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#define AXP20X_IRQ1_STATE 0x48
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#define AXP20X_IRQ2_STATE 0x49
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#define AXP20X_IRQ3_STATE 0x4a
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#define AXP20X_IRQ4_STATE 0x4b
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#define AXP20X_IRQ5_STATE 0x4c
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/* ADC */
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#define AXP20X_ACIN_V_ADC_H 0x56
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#define AXP20X_ACIN_V_ADC_L 0x57
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#define AXP20X_ACIN_I_ADC_H 0x58
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#define AXP20X_ACIN_I_ADC_L 0x59
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#define AXP20X_VBUS_V_ADC_H 0x5a
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#define AXP20X_VBUS_V_ADC_L 0x5b
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#define AXP20X_VBUS_I_ADC_H 0x5c
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#define AXP20X_VBUS_I_ADC_L 0x5d
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#define AXP20X_TEMP_ADC_H 0x5e
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#define AXP20X_TEMP_ADC_L 0x5f
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#define AXP20X_TS_IN_H 0x62
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#define AXP20X_TS_IN_L 0x63
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#define AXP20X_GPIO0_V_ADC_H 0x64
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#define AXP20X_GPIO0_V_ADC_L 0x65
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#define AXP20X_GPIO1_V_ADC_H 0x66
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#define AXP20X_GPIO1_V_ADC_L 0x67
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#define AXP20X_PWR_BATT_H 0x70
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#define AXP20X_PWR_BATT_M 0x71
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#define AXP20X_PWR_BATT_L 0x72
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#define AXP20X_BATT_V_H 0x78
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#define AXP20X_BATT_V_L 0x79
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#define AXP20X_BATT_CHRG_I_H 0x7a
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#define AXP20X_BATT_CHRG_I_L 0x7b
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#define AXP20X_BATT_DISCHRG_I_H 0x7c
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#define AXP20X_BATT_DISCHRG_I_L 0x7d
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#define AXP20X_IPSOUT_V_HIGH_H 0x7e
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#define AXP20X_IPSOUT_V_HIGH_L 0x7f
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/* Power supply */
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#define AXP20X_DCDC_MODE 0x80
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#define AXP20X_ADC_EN1 0x82
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#define AXP20X_ADC_EN2 0x83
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#define AXP20X_ADC_RATE 0x84
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#define AXP20X_GPIO10_IN_RANGE 0x85
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#define AXP20X_GPIO1_ADC_IRQ_RIS 0x86
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#define AXP20X_GPIO1_ADC_IRQ_FAL 0x87
|
||||
#define AXP20X_TIMER_CTRL 0x8a
|
||||
#define AXP20X_VBUS_MON 0x8b
|
||||
#define AXP20X_OVER_TMP 0x8f
|
||||
|
||||
/* GPIO */
|
||||
#define AXP20X_GPIO0_CTRL 0x90
|
||||
#define AXP20X_LDO5_V_OUT 0x91
|
||||
#define AXP20X_GPIO1_CTRL 0x92
|
||||
#define AXP20X_GPIO2_CTRL 0x93
|
||||
#define AXP20X_GPIO20_SS 0x94
|
||||
#define AXP20X_GPIO3_CTRL 0x95
|
||||
|
||||
/* Battery */
|
||||
#define AXP20X_CHRG_CC_31_24 0xb0
|
||||
#define AXP20X_CHRG_CC_23_16 0xb1
|
||||
#define AXP20X_CHRG_CC_15_8 0xb2
|
||||
#define AXP20X_CHRG_CC_7_0 0xb3
|
||||
#define AXP20X_DISCHRG_CC_31_24 0xb4
|
||||
#define AXP20X_DISCHRG_CC_23_16 0xb5
|
||||
#define AXP20X_DISCHRG_CC_15_8 0xb6
|
||||
#define AXP20X_DISCHRG_CC_7_0 0xb7
|
||||
#define AXP20X_CC_CTRL 0xb8
|
||||
#define AXP20X_FG_RES 0xb9
|
||||
|
||||
/* Regulators IDs */
|
||||
enum {
|
||||
AXP20X_LDO1 = 0,
|
||||
AXP20X_LDO2,
|
||||
AXP20X_LDO3,
|
||||
AXP20X_LDO4,
|
||||
AXP20X_LDO5,
|
||||
AXP20X_DCDC2,
|
||||
AXP20X_DCDC3,
|
||||
AXP20X_REG_ID_MAX,
|
||||
};
|
||||
|
||||
/* IRQs */
|
||||
enum {
|
||||
AXP20X_IRQ_ACIN_OVER_V = 1,
|
||||
AXP20X_IRQ_ACIN_PLUGIN,
|
||||
AXP20X_IRQ_ACIN_REMOVAL,
|
||||
AXP20X_IRQ_VBUS_OVER_V,
|
||||
AXP20X_IRQ_VBUS_PLUGIN,
|
||||
AXP20X_IRQ_VBUS_REMOVAL,
|
||||
AXP20X_IRQ_VBUS_V_LOW,
|
||||
AXP20X_IRQ_BATT_PLUGIN,
|
||||
AXP20X_IRQ_BATT_REMOVAL,
|
||||
AXP20X_IRQ_BATT_ENT_ACT_MODE,
|
||||
AXP20X_IRQ_BATT_EXIT_ACT_MODE,
|
||||
AXP20X_IRQ_CHARG,
|
||||
AXP20X_IRQ_CHARG_DONE,
|
||||
AXP20X_IRQ_BATT_TEMP_HIGH,
|
||||
AXP20X_IRQ_BATT_TEMP_LOW,
|
||||
AXP20X_IRQ_DIE_TEMP_HIGH,
|
||||
AXP20X_IRQ_CHARG_I_LOW,
|
||||
AXP20X_IRQ_DCDC1_V_LONG,
|
||||
AXP20X_IRQ_DCDC2_V_LONG,
|
||||
AXP20X_IRQ_DCDC3_V_LONG,
|
||||
AXP20X_IRQ_PEK_SHORT = 22,
|
||||
AXP20X_IRQ_PEK_LONG,
|
||||
AXP20X_IRQ_N_OE_PWR_ON,
|
||||
AXP20X_IRQ_N_OE_PWR_OFF,
|
||||
AXP20X_IRQ_VBUS_VALID,
|
||||
AXP20X_IRQ_VBUS_NOT_VALID,
|
||||
AXP20X_IRQ_VBUS_SESS_VALID,
|
||||
AXP20X_IRQ_VBUS_SESS_END,
|
||||
AXP20X_IRQ_LOW_PWR_LVL1,
|
||||
AXP20X_IRQ_LOW_PWR_LVL2,
|
||||
AXP20X_IRQ_TIMER,
|
||||
AXP20X_IRQ_PEK_RIS_EDGE,
|
||||
AXP20X_IRQ_PEK_FAL_EDGE,
|
||||
AXP20X_IRQ_GPIO3_INPUT,
|
||||
AXP20X_IRQ_GPIO2_INPUT,
|
||||
AXP20X_IRQ_GPIO1_INPUT,
|
||||
AXP20X_IRQ_GPIO0_INPUT,
|
||||
};
|
||||
|
||||
struct axp20x_dev {
|
||||
struct device *dev;
|
||||
struct i2c_client *i2c_client;
|
||||
struct regmap *regmap;
|
||||
struct regmap_irq_chip_data *regmap_irqc;
|
||||
long variant;
|
||||
};
|
||||
|
||||
#endif /* __LINUX_MFD_AXP20X_H */
|
||||
Loading…
Reference in New Issue
Block a user