+++ /dev/null
-From 509326e0138b762067904c0c60f818e9bdba4cd4 Mon Sep 17 00:00:00 2001
-From: Carlo Caione <carlo@caione.org>
-Date: Sat, 1 Mar 2014 17:45:46 +0100
-Subject: [PATCH] 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>
----
- arch/arm/configs/sunxi_defconfig | 1 +
- drivers/mfd/Kconfig | 12 ++
- drivers/mfd/Makefile | 1 +
- drivers/mfd/axp20x.c | 250 +++++++++++++++++++++++++++++++++++++++
- include/linux/mfd/axp20x.h | 180 ++++++++++++++++++++++++++++
- 5 files changed, 444 insertions(+)
- create mode 100644 drivers/mfd/axp20x.c
- create mode 100644 include/linux/mfd/axp20x.h
-
---- a/arch/arm/configs/sunxi_defconfig
-+++ b/arch/arm/configs/sunxi_defconfig
-@@ -55,6 +55,7 @@ CONFIG_GPIO_SYSFS=y
- # CONFIG_HWMON is not set
- CONFIG_WATCHDOG=y
- CONFIG_SUNXI_WATCHDOG=y
-+CONFIG_MFD_AXP20X=y
- # CONFIG_USB_SUPPORT is not set
- CONFIG_NEW_LEDS=y
- CONFIG_LEDS_CLASS=y
---- a/drivers/mfd/Kconfig
-+++ b/drivers/mfd/Kconfig
-@@ -59,6 +59,18 @@ config MFD_AAT2870_CORE
- additional drivers must be enabled in order to use the
- functionality of the device.
-
-+config MFD_AXP20X
-+ bool "X-Powers AXP20X"
-+ select MFD_CORE
-+ select REGMAP_I2C
-+ select REGMAP_IRQ
-+ depends on I2C=y
-+ help
-+ If you say Y here you get support for the AXP20X.
-+ This driver provides common support for accessing the device,
-+ additional drivers must be enabled in order to use the
-+ functionality of the device.
-+
- config MFD_CROS_EC
- tristate "ChromeOS Embedded Controller"
- select MFD_CORE
---- a/drivers/mfd/Makefile
-+++ b/drivers/mfd/Makefile
-@@ -101,6 +101,7 @@ obj-$(CONFIG_PMIC_DA9052) += da9052-irq.
- obj-$(CONFIG_PMIC_DA9052) += da9052-core.o
- obj-$(CONFIG_MFD_DA9052_SPI) += da9052-spi.o
- obj-$(CONFIG_MFD_DA9052_I2C) += da9052-i2c.o
-+obj-$(CONFIG_MFD_AXP20X) += axp20x.o
-
- obj-$(CONFIG_MFD_LP3943) += lp3943.o
- obj-$(CONFIG_MFD_LP8788) += lp8788.o lp8788-irq.o
---- /dev/null
-+++ b/drivers/mfd/axp20x.c
-@@ -0,0 +1,250 @@
-+/*
-+ * axp20x.c - mfd core driver for the X-Powers AXP202 and AXP209
-+ *
-+ * Author: Carlo Caione <carlo@caione.org>
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+
-+#include <linux/err.h>
-+#include <linux/i2c.h>
-+#include <linux/interrupt.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/pm_runtime.h>
-+#include <linux/regmap.h>
-+#include <linux/slab.h>
-+#include <linux/regulator/consumer.h>
-+#include <linux/mfd/axp20x.h>
-+#include <linux/mfd/core.h>
-+#include <linux/of_device.h>
-+#include <linux/of_irq.h>
-+
-+#define AXP20X_OFF 0x80
-+
-+static const struct regmap_range axp20x_writeable_ranges[] = {
-+ regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
-+ regmap_reg_range(AXP20X_DCDC_MODE, AXP20X_FG_RES),
-+};
-+
-+static const struct regmap_range axp20x_volatile_ranges[] = {
-+ regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IRQ5_STATE),
-+};
-+
-+static const struct regmap_access_table axp20x_writeable_table = {
-+ .yes_ranges = axp20x_writeable_ranges,
-+ .n_yes_ranges = ARRAY_SIZE(axp20x_writeable_ranges),
-+};
-+
-+static const struct regmap_access_table axp20x_volatile_table = {
-+ .yes_ranges = axp20x_volatile_ranges,
-+ .n_yes_ranges = ARRAY_SIZE(axp20x_volatile_ranges),
-+};
-+
-+static struct resource axp20x_pek_resources[] = {
-+ {
-+ .name = "PEK_DBR",
-+ .start = AXP20X_IRQ_PEK_RIS_EDGE,
-+ .end = AXP20X_IRQ_PEK_RIS_EDGE,
-+ .flags = IORESOURCE_IRQ,
-+ },
-+ {
-+ .name = "PEK_DBF",
-+ .start = AXP20X_IRQ_PEK_FAL_EDGE,
-+ .end = AXP20X_IRQ_PEK_FAL_EDGE,
-+ .flags = IORESOURCE_IRQ,
-+ },
-+};
-+
-+static const struct regmap_config axp20x_regmap_config = {
-+ .reg_bits = 8,
-+ .val_bits = 8,
-+ .wr_table = &axp20x_writeable_table,
-+ .volatile_table = &axp20x_volatile_table,
-+ .max_register = AXP20X_FG_RES,
-+ .cache_type = REGCACHE_RBTREE,
-+};
-+
-+#define AXP20X_IRQ(_irq, _off, _mask) \
-+ [AXP20X_IRQ_##_irq] = { .reg_offset = (_off), .mask = BIT(_mask) }
-+
-+static const struct regmap_irq axp20x_regmap_irqs[] = {
-+ AXP20X_IRQ(ACIN_OVER_V, 0, 7),
-+ AXP20X_IRQ(ACIN_PLUGIN, 0, 6),
-+ AXP20X_IRQ(ACIN_REMOVAL, 0, 5),
-+ AXP20X_IRQ(VBUS_OVER_V, 0, 4),
-+ AXP20X_IRQ(VBUS_PLUGIN, 0, 3),
-+ AXP20X_IRQ(VBUS_REMOVAL, 0, 2),
-+ AXP20X_IRQ(VBUS_V_LOW, 0, 1),
-+ AXP20X_IRQ(BATT_PLUGIN, 1, 7),
-+ AXP20X_IRQ(BATT_REMOVAL, 1, 6),
-+ AXP20X_IRQ(BATT_ENT_ACT_MODE, 1, 5),
-+ AXP20X_IRQ(BATT_EXIT_ACT_MODE, 1, 4),
-+ AXP20X_IRQ(CHARG, 1, 3),
-+ AXP20X_IRQ(CHARG_DONE, 1, 2),
-+ AXP20X_IRQ(BATT_TEMP_HIGH, 1, 1),
-+ AXP20X_IRQ(BATT_TEMP_LOW, 1, 0),
-+ AXP20X_IRQ(DIE_TEMP_HIGH, 2, 7),
-+ AXP20X_IRQ(CHARG_I_LOW, 2, 6),
-+ AXP20X_IRQ(DCDC1_V_LONG, 2, 5),
-+ AXP20X_IRQ(DCDC2_V_LONG, 2, 4),
-+ AXP20X_IRQ(DCDC3_V_LONG, 2, 3),
-+ AXP20X_IRQ(PEK_SHORT, 2, 1),
-+ AXP20X_IRQ(PEK_LONG, 2, 0),
-+ AXP20X_IRQ(N_OE_PWR_ON, 3, 7),
-+ AXP20X_IRQ(N_OE_PWR_OFF, 3, 6),
-+ AXP20X_IRQ(VBUS_VALID, 3, 5),
-+ AXP20X_IRQ(VBUS_NOT_VALID, 3, 4),
-+ AXP20X_IRQ(VBUS_SESS_VALID, 3, 3),
-+ AXP20X_IRQ(VBUS_SESS_END, 3, 2),
-+ AXP20X_IRQ(LOW_PWR_LVL1, 3, 1),
-+ AXP20X_IRQ(LOW_PWR_LVL2, 3, 0),
-+ AXP20X_IRQ(TIMER, 4, 7),
-+ AXP20X_IRQ(PEK_RIS_EDGE, 4, 6),
-+ AXP20X_IRQ(PEK_FAL_EDGE, 4, 5),
-+ AXP20X_IRQ(GPIO3_INPUT, 4, 3),
-+ AXP20X_IRQ(GPIO2_INPUT, 4, 2),
-+ AXP20X_IRQ(GPIO1_INPUT, 4, 1),
-+ AXP20X_IRQ(GPIO0_INPUT, 4, 0),
-+};
-+
-+static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
-+ .name = "axp20x_irq_chip",
-+ .status_base = AXP20X_IRQ1_STATE,
-+ .ack_base = AXP20X_IRQ1_STATE,
-+ .mask_base = AXP20X_IRQ1_EN,
-+ .num_regs = 5,
-+ .irqs = axp20x_regmap_irqs,
-+ .num_irqs = ARRAY_SIZE(axp20x_regmap_irqs),
-+ .mask_invert = true,
-+ .init_ack_masked = true,
-+};
-+
-+static struct mfd_cell axp20x_cells[] = {
-+ {
-+ .name = "axp20x-pek",
-+ .of_compatible = "x-powers,axp20x-pek",
-+ .num_resources = ARRAY_SIZE(axp20x_pek_resources),
-+ .resources = axp20x_pek_resources,
-+ }, {
-+ .name = "axp20x-regulator",
-+ },
-+};
-+
-+const struct of_device_id axp20x_of_match[] = {
-+ { .compatible = "x-powers,axp202", .data = (void *) AXP202_ID },
-+ { .compatible = "x-powers,axp209", .data = (void *) AXP209_ID },
-+ { },
-+};
-+
-+static struct axp20x_dev *axp20x_pm_power_off;
-+static void axp20x_power_off(void)
-+{
-+ regmap_write(axp20x_pm_power_off->regmap, AXP20X_OFF_CTRL,
-+ AXP20X_OFF);
-+}
-+
-+static int axp20x_i2c_probe(struct i2c_client *i2c,
-+ const struct i2c_device_id *id)
-+{
-+ struct axp20x_dev *axp20x;
-+ const struct of_device_id *of_id;
-+ struct device_node *node = i2c->dev.of_node;
-+ int ret;
-+
-+ axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);
-+ if (!axp20x)
-+ return -ENOMEM;
-+
-+ of_id = of_match_device(axp20x_of_match, &i2c->dev);
-+ if (!of_id) {
-+ dev_err(&i2c->dev, "Unable to setup AXP20X data\n");
-+ return -ENODEV;
-+ }
-+ axp20x->variant = (int) of_id->data;
-+
-+ axp20x->i2c_client = i2c;
-+ axp20x->dev = &i2c->dev;
-+ dev_set_drvdata(axp20x->dev, axp20x);
-+
-+ axp20x->regmap = devm_regmap_init_i2c(i2c, &axp20x_regmap_config);
-+ if (IS_ERR(axp20x->regmap)) {
-+ ret = PTR_ERR(axp20x->regmap);
-+ dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
-+ return ret;
-+ }
-+
-+ axp20x->irq = i2c->irq;
-+ ret = regmap_add_irq_chip(axp20x->regmap, axp20x->irq,
-+ IRQF_ONESHOT | IRQF_SHARED, -1,
-+ &axp20x_regmap_irq_chip,
-+ &axp20x->regmap_irqc);
-+ if (ret) {
-+ dev_err(&i2c->dev, "failed to add irq chip: %d\n", ret);
-+ return ret;
-+ }
-+
-+ ret = mfd_add_devices(axp20x->dev, -1, axp20x_cells,
-+ ARRAY_SIZE(axp20x_cells), NULL, 0, NULL);
-+ if (ret) {
-+ dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret);
-+ goto mfd_err;
-+ }
-+
-+ axp20x->pm_off = of_property_read_bool(node, "axp,system-power-controller");
-+
-+ if (axp20x->pm_off && !pm_power_off) {
-+ axp20x_pm_power_off = axp20x;
-+ pm_power_off = axp20x_power_off;
-+ }
-+
-+ dev_info(&i2c->dev, "AXP20X driver loaded\n");
-+
-+ return 0;
-+
-+mfd_err:
-+ regmap_del_irq_chip(axp20x->irq, axp20x->regmap_irqc);
-+
-+ return ret;
-+}
-+
-+static int axp20x_i2c_remove(struct i2c_client *i2c)
-+{
-+ struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);
-+
-+ if (axp20x == axp20x_pm_power_off) {
-+ axp20x_pm_power_off = NULL;
-+ pm_power_off = NULL;
-+ }
-+
-+ mfd_remove_devices(axp20x->dev);
-+ regmap_del_irq_chip(axp20x->i2c_client->irq, axp20x->regmap_irqc);
-+
-+ return 0;
-+}
-+
-+static const struct i2c_device_id axp20x_i2c_id[] = {
-+ { "axp202", AXP202_ID },
-+ { "axp209", AXP209_ID },
-+ { }
-+};
-+MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
-+
-+static struct i2c_driver axp20x_i2c_driver = {
-+ .driver = {
-+ .name = "axp20x",
-+ .owner = THIS_MODULE,
-+ .of_match_table = of_match_ptr(axp20x_of_match),
-+ },
-+ .probe = axp20x_i2c_probe,
-+ .remove = axp20x_i2c_remove,
-+ .id_table = axp20x_i2c_id,
-+};
-+
-+module_i2c_driver(axp20x_i2c_driver);
-+
-+MODULE_DESCRIPTION("PMIC MFD core driver for AXP20X");
-+MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/include/linux/mfd/axp20x.h
-@@ -0,0 +1,180 @@
-+/*
-+ * Functions to access AXP20X power management chip.
-+ *
-+ * Copyright (C) 2013, Carlo Caione <carlo@caione.org>
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2 as
-+ * published by the Free Software Foundation.
-+ */
-+
-+#ifndef __LINUX_MFD_AXP20X_H
-+#define __LINUX_MFD_AXP20X_H
-+
-+#define AXP202_ID 0
-+#define AXP209_ID 1
-+
-+#define AXP20X_DATACACHE(m) (0x04 + (m))
-+
-+/* Power supply */
-+#define AXP20X_PWR_INPUT_STATUS 0x00
-+#define AXP20X_PWR_OP_MODE 0x01
-+#define AXP20X_USB_OTG_STATUS 0x02
-+#define AXP20X_PWR_OUT_CTRL 0x12
-+#define AXP20X_DCDC2_V_OUT 0x23
-+#define AXP20X_DCDC2_LDO3_V_SCAL 0x25
-+#define AXP20X_DCDC3_V_OUT 0x27
-+#define AXP20X_LDO24_V_OUT 0x28
-+#define AXP20X_LDO3_V_OUT 0x29
-+#define AXP20X_VBUS_IPSOUT_MGMT 0x30
-+#define AXP20X_V_OFF 0x31
-+#define AXP20X_OFF_CTRL 0x32
-+#define AXP20X_CHRG_CTRL1 0x33
-+#define AXP20X_CHRG_CTRL2 0x34
-+#define AXP20X_CHRG_BAK_CTRL 0x35
-+#define AXP20X_PEK_KEY 0x36
-+#define AXP20X_DCDC_FREQ 0x37
-+#define AXP20X_V_LTF_CHRG 0x38
-+#define AXP20X_V_HTF_CHRG 0x39
-+#define AXP20X_APS_WARN_L1 0x3a
-+#define AXP20X_APS_WARN_L2 0x3b
-+#define AXP20X_V_LTF_DISCHRG 0x3c
-+#define AXP20X_V_HTF_DISCHRG 0x3d
-+
-+/* Interrupt */
-+#define AXP20X_IRQ1_EN 0x40
-+#define AXP20X_IRQ2_EN 0x41
-+#define AXP20X_IRQ3_EN 0x42
-+#define AXP20X_IRQ4_EN 0x43
-+#define AXP20X_IRQ5_EN 0x44
-+#define AXP20X_IRQ1_STATE 0x48
-+#define AXP20X_IRQ2_STATE 0x49
-+#define AXP20X_IRQ3_STATE 0x4a
-+#define AXP20X_IRQ4_STATE 0x4b
-+#define AXP20X_IRQ5_STATE 0x4c
-+
-+/* ADC */
-+#define AXP20X_ACIN_V_ADC_H 0x56
-+#define AXP20X_ACIN_V_ADC_L 0x57
-+#define AXP20X_ACIN_I_ADC_H 0x58
-+#define AXP20X_ACIN_I_ADC_L 0x59
-+#define AXP20X_VBUS_V_ADC_H 0x5a
-+#define AXP20X_VBUS_V_ADC_L 0x5b
-+#define AXP20X_VBUS_I_ADC_H 0x5c
-+#define AXP20X_VBUS_I_ADC_L 0x5d
-+#define AXP20X_TEMP_ADC_H 0x5e
-+#define AXP20X_TEMP_ADC_L 0x5f
-+#define AXP20X_TS_IN_H 0x62
-+#define AXP20X_TS_IN_L 0x63
-+#define AXP20X_GPIO0_V_ADC_H 0x64
-+#define AXP20X_GPIO0_V_ADC_L 0x65
-+#define AXP20X_GPIO1_V_ADC_H 0x66
-+#define AXP20X_GPIO1_V_ADC_L 0x67
-+#define AXP20X_PWR_BATT_H 0x70
-+#define AXP20X_PWR_BATT_M 0x71
-+#define AXP20X_PWR_BATT_L 0x72
-+#define AXP20X_BATT_V_H 0x78
-+#define AXP20X_BATT_V_L 0x79
-+#define AXP20X_BATT_CHRG_I_H 0x7a
-+#define AXP20X_BATT_CHRG_I_L 0x7b
-+#define AXP20X_BATT_DISCHRG_I_H 0x7c
-+#define AXP20X_BATT_DISCHRG_I_L 0x7d
-+#define AXP20X_IPSOUT_V_HIGH_H 0x7e
-+#define AXP20X_IPSOUT_V_HIGH_L 0x7f
-+
-+/* Power supply */
-+#define AXP20X_DCDC_MODE 0x80
-+#define AXP20X_ADC_EN1 0x82
-+#define AXP20X_ADC_EN2 0x83
-+#define AXP20X_ADC_RATE 0x84
-+#define AXP20X_GPIO10_IN_RANGE 0x85
-+#define AXP20X_GPIO1_ADC_IRQ_RIS 0x86
-+#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;
-+ int variant;
-+ int irq;
-+ bool pm_off;
-+};
-+
-+#endif /* __LINUX_MFD_AXP20X_H */
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