[PATCH v2 06/10] mfd: Add driver for Maxim 77802 Power Management IC

Javier Martinez Canillas
2014-06-16T18:09:40Z

Maxim MAX77802 is a power management chip that contains 10 high
efficiency Buck regulators, 32 Low-dropout (LDO) regulators used
to power up application processors and peripherals, a 2-channel
32kHz clock outputs, a Real-Time-Clock (RTC) and a I2C interface
to program the individual regulators, clocks outputs and the RTC.

This patch adds the core support for MAX77802 PMIC and is based
on a driver added by Simon Glass to the Chrome OS kernel 3.8 tree.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
---

Changes since v1:
- Convert max77{686,802} to regmap irq API and get rid of max77{686,802}-irq.c
suggested by Krzysztof Kozlowski.
- Don't protect max77802 mfd_cells using Kconfig options since mfd core omits
devices that don't match. Suggested by Lee Jones.
- Change mfd driver to be tristate instead of boolean. Suggested by Mark Brown.
- Change binding "voltage-regulators" property to "regulators" to be consistent
with other PMIC drivers. Suggested by Mark Brown.
- Use regulators node names instead of the deprecated "regulator-compatible"
property. Suggested by Mark Brown.
- Use the new descriptor-based GPIO interface instead of the deprecated
integer based GPIO one. Suggested by Mark Brown.
- Remove the type parameter from i2c_device_id table since was not used.
- Fix device not found error message and remove unneeded device found message.

Documentation/devicetree/bindings/mfd/max77802.txt | 87 +++++
drivers/mfd/Kconfig | 14 +
drivers/mfd/Makefile | 1 +
drivers/mfd/max77802.c | 362 +++++++++++++++++++++
include/linux/mfd/max77802-private.h | 309 ++++++++++++++++++
include/linux/mfd/max77802.h | 124 +++++++
6 files changed, 897 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/max77802.txt
create mode 100644 drivers/mfd/max77802.c
create mode 100644 include/linux/mfd/max77802-private.h
create mode 100644 include/linux/mfd/max77802.h

diff --git a/Documentation/devicetree/bindings/mfd/max77802.txt b/Documentation/devicetree/bindings/mfd/max77802.txt
new file mode 100644
index 0000000..e6c4860
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/max77802.txt
@@ -0,0 +1,87 @@
+Maxim MAX77802 multi-function device
+
+MAX77802 is a Mulitifunction device with PMIC, RTC and Charger on chip. It is
+interfaced to host controller using i2c interface. PMIC, Charger and RTC
+submodules are addressed using same i2c slave address
+
+This document describes the binding for mfd device and PMIC submodule.
+
+Binding for the built-in 32k clock generator block is defined separately
+in bindings/clk/maxim,max77802.txt file.
+
+Required properties:
+- compatible : Must be "maxim,max77802";
+- reg : Specifies the i2c slave address of PMIC block.
+- interrupts : This i2c device has an IRQ line connected to the main SoC.
+- interrupt-parent : The parent interrupt controller.
+
+Optional properties:
+- max77802,pmic-buck-default-dvs-idx: We'll always write this DVS index in the
+ PMIC for BUCKs with DVS (Bucks 1-4, 6).
+ NOTE: at the moment these bindings don't include enough details for actual
+ GPIO-DVS--this just lets you choose which single slot to use.
+
+- max77802,pmic-buck-dvs-gpios: The DVS GPIOs. We'll try to set these GPIOs
+ to match pmic-buck-default-dvs-idx at probe time if they are defined. If
+ some or all of these GPIOs are not defined it's assumed that the board has
+ any missing GPIOs hardwired to match pmic-buck-default-dvs-idx.
+
+- max77802,pmic-buck-selb-gpios: GPIOs to enable DVS-GPIO for BUCKs.
+ Should be five values: 1, 2, 3, 4, 6. It is strongly suggested to include
+ these GPIOs if there's any chance that changing DVS GPIOs one line at a
+ time might glitch your DVS values.
+
+Optional node:
+- regulators : The regulators of max77802 have to be instantiated
+ under subnode named "regulators" using the following format.
+
+ regulator_name {
+ standard regulator constraints....
+ };
+ refer Documentation/devicetree/bindings/regulator/regulator.txt
+
+ The regulator node name should be initialized with a string
+to get matched with their hardware counterparts as follow:
+
+ -LDOn : for LDOs, where n can lie in range 1 to 35.
+ example: LDO1, LDO2, LDO35.
+ -BUCKn : for BUCKs, where n can lie in range 1 to 10.
+ example: BUCK1, BUCK5, BUCK10.
+Example:
+
+ max77802@09 {
+ compatible = "maxim,max77802";
+ interrupt-parent = <&wakeup_eint>;
+ interrupts = <26 0>;
+ reg = <0x09>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ max77802,pmic-buck-default-dvs-idx = <1>;
+ max77802,pmic-buck-dvs-gpios = <&gpy7 6 0>,
+ <&gpj4 2 0>,
+ <&gpj4 3 0>;
+ max77802,pmic-buck-selb-gpios = <&gph0 2 0>,
+ <&gph0 3 0>,
+ <&gph0 4 0>,
+ <&gph0 5 0>,
+ <&gph0 6 0>;
+
+ regulators {
+ ldo11_reg: LDO11 {
+ regulator-compatible = "LDO11";
+ regulator-name = "vdd_ldo11";
+ regulator-min-microvolt = <1900000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-always-on;
+ };
+
+ buck1_reg {
+ regulator-compatible = "BUCK1";
+ regulator-name = "vdd_mif";
+ regulator-min-microvolt = <950000>;
+ regulator-max-microvolt = <1300000>;
+ regulator-always-on;
+ regulator-boot-on;
+ };
+ };
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 0916447..dcec3b7 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -393,6 +393,20 @@ config MFD_MAX77693
additional drivers must be enabled in order to use the functionality
of the device.

+config MFD_MAX77802
+ tristate "Maxim Integrated MAX77802 PMIC Support"
+ depends on I2C=y
+ select MFD_CORE
+ select REGMAP_I2C
+ select REGMAP_IRQ
+ select IRQ_DOMAIN
+ help
+ Say yes here to support for Maxim Integrated MAX77802.
+ This is a Power Management IC with RTC on chip.
+ 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_MAX8907
tristate "Maxim Semiconductor MAX8907 PMIC Support"
select MFD_CORE
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 3b3b408..8108ae6 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -117,6 +117,7 @@ obj-$(CONFIG_MFD_DA9063) += da9063.o
obj-$(CONFIG_MFD_MAX14577) += max14577.o
obj-$(CONFIG_MFD_MAX77686) += max77686.o
obj-$(CONFIG_MFD_MAX77693) += max77693.o max77693-irq.o
+obj-$(CONFIG_MFD_MAX77802) += max77802.o
obj-$(CONFIG_MFD_MAX8907) += max8907.o
max8925-objs := max8925-core.o max8925-i2c.o
obj-$(CONFIG_MFD_MAX8925) += max8925.o
diff --git a/drivers/mfd/max77802.c b/drivers/mfd/max77802.c
new file mode 100644
index 0000000..c29fcdd
--- /dev/null
+++ b/drivers/mfd/max77802.c
@@ -0,0 +1,362 @@
+/*
+ * max77802.c - mfd core driver for the Maxim 77802
+ *
+ * Copyright (C) 2013-2014 Google, Inc
+ * Simon Glass <sjg@chromium.org>
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ * Chiwoong Byun <woong.byun@smasung.com>
+ * Jonghwa Lee <jonghwa3.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * This driver is based on max8997.c
+ */
+
+#include <linux/export.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/pm_runtime.h>
+#include <linux/module.h>
+#include <linux/mfd/core.h>
+#include <linux/gpio/consumer.h>
+#include <linux/mfd/max77802.h>
+#include <linux/mfd/max77802-private.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/err.h>
+
+static const struct mfd_cell max77802_devs[] = {
+};
+
+static bool max77802_pmic_is_accessible_reg(struct device *dev,
+ unsigned int reg)
+{
+ return (reg >= MAX77802_REG_DEVICE_ID && reg < MAX77802_REG_PMIC_END);
+}
+
+static bool max77802_rtc_is_accessible_reg(struct device *dev,
+ unsigned int reg)
+{
+ return (reg >= MAX77802_RTC_INT && reg < MAX77802_RTC_END);
+}
+
+static bool max77802_is_accessible_reg(struct device *dev, unsigned int reg)
+{
+ return (max77802_pmic_is_accessible_reg(dev, reg) ||
+ max77802_rtc_is_accessible_reg(dev, reg));
+}
+
+static bool max77802_pmic_is_precious_reg(struct device *dev, unsigned int reg)
+{
+ return (reg == MAX77802_REG_INTSRC || reg == MAX77802_REG_INT1 ||
+ reg == MAX77802_REG_INT2);
+}
+
+static bool max77802_rtc_is_precious_reg(struct device *dev, unsigned int reg)
+{
+ return (reg == MAX77802_RTC_INT ||
+ reg == MAX77802_RTC_UPDATE0 ||
+ reg == MAX77802_RTC_UPDATE1);
+}
+
+static bool max77802_is_precious_reg(struct device *dev, unsigned int reg)
+{
+ return (max77802_pmic_is_precious_reg(dev, reg) ||
+ max77802_rtc_is_precious_reg(dev, reg));
+}
+
+static bool max77802_pmic_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ return (max77802_is_precious_reg(dev, reg) ||
+ reg == MAX77802_REG_STATUS1 || reg == MAX77802_REG_STATUS2 ||
+ reg == MAX77802_REG_PWRON);
+}
+
+static bool max77802_rtc_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ return (max77802_rtc_is_precious_reg(dev, reg) ||
+ reg == MAX77802_RTC_SEC ||
+ reg == MAX77802_RTC_MIN ||
+ reg == MAX77802_RTC_HOUR ||
+ reg == MAX77802_RTC_WEEKDAY ||
+ reg == MAX77802_RTC_MONTH ||
+ reg == MAX77802_RTC_YEAR ||
+ reg == MAX77802_RTC_DATE);
+}
+
+static bool max77802_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ return (max77802_pmic_is_volatile_reg(dev, reg) ||
+ max77802_rtc_is_volatile_reg(dev, reg));
+}
+
+static struct regmap_config max77802_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .writeable_reg = max77802_is_accessible_reg,
+ .readable_reg = max77802_is_accessible_reg,
+ .precious_reg = max77802_is_precious_reg,
+ .volatile_reg = max77802_is_volatile_reg,
+ .name = "max77802-pmic",
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static const struct regmap_irq max77802_irqs[] = {
+ /* INT1 interrupts */
+ { .reg_offset = 0, .mask = MAX77802_INT1_PWRONF_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_INT1_PWRONR_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_INT1_JIGONBF_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_INT1_JIGONBR_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_INT1_ACOKBF_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_INT1_ACOKBR_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_INT1_ONKEY1S_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_INT1_MRSTB_MSK, },
+ /* INT2 interrupts */
+ { .reg_offset = 1, .mask = MAX77802_INT2_140C_MSK, },
+ { .reg_offset = 1, .mask = MAX77802_INT2_120C_MSK, },
+};
+
+static const struct regmap_irq_chip max77802_irq_chip = {
+ .name = "max77802-pmic",
+ .status_base = MAX77802_REG_INT1,
+ .mask_base = MAX77802_REG_INT1MSK,
+ .num_regs = 2,
+ .irqs = max77802_irqs,
+ .num_irqs = ARRAY_SIZE(max77802_irqs),
+};
+
+static const struct regmap_irq max77802_rtc_irqs[] = {
+ /* RTC interrupts */
+ { .reg_offset = 0, .mask = MAX77802_RTCINT_RTC60S_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_RTCINT_RTCA1_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_RTCINT_RTCA2_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_RTCINT_SMPL_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_RTCINT_RTC1S_MSK, },
+ { .reg_offset = 0, .mask = MAX77802_RTCINT_WTSR_MSK, },
+};
+
+static const struct regmap_irq_chip max77802_rtc_irq_chip = {
+ .name = "max77802-rtc",
+ .status_base = MAX77802_RTC_INT,
+ .mask_base = MAX77802_RTC_INTM,
+ .num_regs = 1,
+ .irqs = max77802_rtc_irqs,
+ .num_irqs = ARRAY_SIZE(max77802_rtc_irqs),
+};
+
+#ifdef CONFIG_OF
+static struct of_device_id max77802_pmic_dt_match[] = {
+ {.compatible = "maxim,max77802", .data = NULL},
+ {},
+};
+
+static void max77802_dt_parse_dvs_gpio(struct device *dev,
+ struct max77802_platform_data *pd,
+ struct device_node *np)
+{
+ int i;
+
+ /*
+ * NOTE: we don't consider GPIO errors fatal; board may have some lines
+ * directly pulled high or low and thus doesn't specify them.
+ */
+ for (i = 0; i < ARRAY_SIZE(pd->buck_gpio_dvs); i++)
+ pd->buck_gpio_dvs[i] =
+ devm_gpiod_get_index(dev, "max77802,pmic-buck-dvs", i);
+
+ for (i = 0; i < ARRAY_SIZE(pd->buck_gpio_selb); i++)
+ pd->buck_gpio_selb[i] =
+ devm_gpiod_get_index(dev, "max77802,pmic-buck-selb", i);
+}
+
+static struct max77802_platform_data *max77802_i2c_parse_dt_pdata(struct device
+ *dev)
+{
+ struct device_node *np = dev->of_node;
+ struct max77802_platform_data *pd;
+
+ pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
+ if (!pd) {
+ dev_err(dev, "could not allocate memory for pdata\n");
+ return NULL;
+ }
+
+ /* Read default index and ignore errors, since default is 0 */
+ of_property_read_u32(np, "max77802,pmic-buck-default-dvs-idx",
+ &pd->buck_default_idx);
+
+ max77802_dt_parse_dvs_gpio(dev, pd, np);
+
+ dev->platform_data = pd;
+ return pd;
+}
+#else
+static struct max77802_platform_data *max77802_i2c_parse_dt_pdata(struct device
+ *dev)
+{
+ return 0;
+}
+#endif
+
+static int max77802_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct max77802_dev *max77802 = NULL;
+ struct max77802_platform_data *pdata = dev_get_platdata(&i2c->dev);
+ unsigned int data;
+ int ret = 0;
+
+ if (i2c->dev.of_node)
+ pdata = max77802_i2c_parse_dt_pdata(&i2c->dev);
+
+ if (!pdata) {
+ dev_err(&i2c->dev, "No platform data found.\n");
+ return -EIO;
+ }
+
+ max77802 = devm_kzalloc(&i2c->dev, sizeof(struct max77802_dev),
+ GFP_KERNEL);
+ if (max77802 == NULL)
+ return -ENOMEM;
+
+ i2c_set_clientdata(i2c, max77802);
+
+ max77802->dev = &i2c->dev;
+ max77802->i2c = i2c;
+ max77802->type = id->driver_data;
+
+ max77802->wakeup = pdata->wakeup;
+ max77802->irq = i2c->irq;
+
+ max77802->regmap = devm_regmap_init_i2c(i2c, &max77802_regmap_config);
+ if (IS_ERR(max77802->regmap)) {
+ ret = PTR_ERR(max77802->regmap);
+ dev_err(max77802->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ if (regmap_read(max77802->regmap,
+ MAX77802_REG_DEVICE_ID, &data) < 0) {
+ dev_err(max77802->dev,
+ "device not found on this channel\n");
+ return -ENODEV;
+ }
+
+ ret = regmap_add_irq_chip(max77802->regmap, max77802->irq,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
+ IRQF_SHARED, 0, &max77802_irq_chip,
+ &max77802->irq_data);
+ if (ret != 0) {
+ dev_err(&i2c->dev, "failed to add PMIC irq chip: %d\n", ret);
+ return ret;
+ }
+ ret = regmap_add_irq_chip(max77802->regmap, max77802->irq,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
+ IRQF_SHARED, 0, &max77802_rtc_irq_chip,
+ &max77802->rtc_irq_data);
+ if (ret != 0) {
+ dev_err(&i2c->dev, "failed to add RTC irq chip: %d\n", ret);
+ goto err_del_irqc;
+ }
+
+ ret = mfd_add_devices(max77802->dev, -1, max77802_devs,
+ ARRAY_SIZE(max77802_devs), NULL, 0, NULL);
+ if (ret < 0) {
+ dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret);
+ goto err_del_rtc_irqc;
+ }
+
+ return 0;
+
+err_del_rtc_irqc:
+ regmap_del_irq_chip(max77802->irq, max77802->rtc_irq_data);
+err_del_irqc:
+ regmap_del_irq_chip(max77802->irq, max77802->irq_data);
+ return ret;
+}
+
+static int max77802_i2c_remove(struct i2c_client *i2c)
+{
+ struct max77802_dev *max77802 = i2c_get_clientdata(i2c);
+
+ mfd_remove_devices(max77802->dev);
+
+ return 0;
+}
+
+static const struct i2c_device_id max77802_i2c_id[] = {
+ { "max77802", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max77802_i2c_id);
+
+#ifdef CONFIG_PM_SLEEP
+static int max77802_suspend(struct device *dev)
+{
+ struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+ struct max77802_dev *max77802 = i2c_get_clientdata(i2c);
+
+ if (device_may_wakeup(dev))
+ enable_irq_wake(max77802->irq);
+
+ disable_irq(max77802->irq);
+
+ return 0;
+}
+
+static int max77802_resume(struct device *dev)
+{
+ struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
+ struct max77802_dev *max77802 = i2c_get_clientdata(i2c);
+
+ if (device_may_wakeup(dev))
+ disable_irq_wake(max77802->irq);
+
+ enable_irq(max77802->irq);
+
+ return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(max77802_pm, max77802_suspend, max77802_resume);
+
+static struct i2c_driver max77802_i2c_driver = {
+ .driver = {
+ .name = "max77802",
+ .owner = THIS_MODULE,
+ .pm = &max77802_pm,
+ .of_match_table = of_match_ptr(max77802_pmic_dt_match),
+ },
+ .probe = max77802_i2c_probe,
+ .remove = max77802_i2c_remove,
+ .id_table = max77802_i2c_id,
+};
+
+static int __init max77802_i2c_init(void)
+{
+ return i2c_add_driver(&max77802_i2c_driver);
+}
+/* init early so consumer devices can complete system boot */
+subsys_initcall(max77802_i2c_init);
+
+static void __exit max77802_i2c_exit(void)
+{
+ i2c_del_driver(&max77802_i2c_driver);
+}
+module_exit(max77802_i2c_exit);
+
+MODULE_DESCRIPTION("MAXIM 77802 multi-function core driver");
+MODULE_AUTHOR("Simon Glass <sjg@chromium.org>");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/max77802-private.h b/include/linux/mfd/max77802-private.h
new file mode 100644
index 0000000..81bc90d
--- /dev/null
+++ b/include/linux/mfd/max77802-private.h
@@ -0,0 +1,309 @@
+/*
+ * max77802-private.h - Voltage regulator driver for the Maxim 77802
+ *
+ * Copyright (C) 2012 Samsung Electrnoics
+ * Chiwoong Byun <woong.byun@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __LINUX_MFD_MAX77802_PRIV_H
+#define __LINUX_MFD_MAX77802_PRIV_H
+
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/module.h>
+
+#define MAX77802_REG_INVALID (0xff)
+
+enum max77802_pmic_reg {
+ MAX77802_REG_DEVICE_ID = 0x00,
+ MAX77802_REG_INTSRC = 0x01,
+ MAX77802_REG_INT1 = 0x02,
+ MAX77802_REG_INT2 = 0x03,
+
+ MAX77802_REG_INT1MSK = 0x04,
+ MAX77802_REG_INT2MSK = 0x05,
+
+ MAX77802_REG_STATUS1 = 0x06,
+ MAX77802_REG_STATUS2 = 0x07,
+
+ MAX77802_REG_PWRON = 0x08,
+ /* Reserved: 0x09 */
+ MAX77802_REG_MRSTB = 0x0A,
+ MAX77802_REG_EPWRHOLD = 0x0B,
+ /* Reserved: 0x0C-0x0D */
+ MAX77802_REG_BOOSTCTRL = 0x0E,
+ MAX77802_REG_BOOSTOUT = 0x0F,
+
+ MAX77802_REG_BUCK1CTRL = 0x10,
+ MAX77802_REG_BUCK1DVS1 = 0x11,
+ MAX77802_REG_BUCK1DVS2 = 0x12,
+ MAX77802_REG_BUCK1DVS3 = 0x13,
+ MAX77802_REG_BUCK1DVS4 = 0x14,
+ MAX77802_REG_BUCK1DVS5 = 0x15,
+ MAX77802_REG_BUCK1DVS6 = 0x16,
+ MAX77802_REG_BUCK1DVS7 = 0x17,
+ MAX77802_REG_BUCK1DVS8 = 0x18,
+ /* Reserved: 0x19 */
+ MAX77802_REG_BUCK2CTRL1 = 0x1A,
+ MAX77802_REG_BUCK2CTRL2 = 0x1B,
+ MAX77802_REG_BUCK2PHTRAN = 0x1C,
+ MAX77802_REG_BUCK2DVS1 = 0x1D,
+ MAX77802_REG_BUCK2DVS2 = 0x1E,
+ MAX77802_REG_BUCK2DVS3 = 0x1F,
+ MAX77802_REG_BUCK2DVS4 = 0x20,
+ MAX77802_REG_BUCK2DVS5 = 0x21,
+ MAX77802_REG_BUCK2DVS6 = 0x22,
+ MAX77802_REG_BUCK2DVS7 = 0x23,
+ MAX77802_REG_BUCK2DVS8 = 0x24,
+ /* Reserved: 0x25-0x26 */
+ MAX77802_REG_BUCK3CTRL1 = 0x27,
+ MAX77802_REG_BUCK3DVS1 = 0x28,
+ MAX77802_REG_BUCK3DVS2 = 0x29,
+ MAX77802_REG_BUCK3DVS3 = 0x2A,
+ MAX77802_REG_BUCK3DVS4 = 0x2B,
+ MAX77802_REG_BUCK3DVS5 = 0x2C,
+ MAX77802_REG_BUCK3DVS6 = 0x2D,
+ MAX77802_REG_BUCK3DVS7 = 0x2E,
+ MAX77802_REG_BUCK3DVS8 = 0x2F,
+ /* Reserved: 0x30-0x36 */
+ MAX77802_REG_BUCK4CTRL1 = 0x37,
+ MAX77802_REG_BUCK4DVS1 = 0x38,
+ MAX77802_REG_BUCK4DVS2 = 0x39,
+ MAX77802_REG_BUCK4DVS3 = 0x3A,
+ MAX77802_REG_BUCK4DVS4 = 0x3B,
+ MAX77802_REG_BUCK4DVS5 = 0x3C,
+ MAX77802_REG_BUCK4DVS6 = 0x3D,
+ MAX77802_REG_BUCK4DVS7 = 0x3E,
+ MAX77802_REG_BUCK4DVS8 = 0x3F,
+ /* Reserved: 0x40 */
+ MAX77802_REG_BUCK5CTRL = 0x41,
+ MAX77802_REG_BUCK5OUT = 0x42,
+ /* Reserved: 0x43 */
+ MAX77802_REG_BUCK6CTRL = 0x44,
+ MAX77802_REG_BUCK6DVS1 = 0x45,
+ MAX77802_REG_BUCK6DVS2 = 0x46,
+ MAX77802_REG_BUCK6DVS3 = 0x47,
+ MAX77802_REG_BUCK6DVS4 = 0x48,
+ MAX77802_REG_BUCK6DVS5 = 0x49,
+ MAX77802_REG_BUCK6DVS6 = 0x4A,
+ MAX77802_REG_BUCK6DVS7 = 0x4B,
+ MAX77802_REG_BUCK6DVS8 = 0x4C,
+ /* Reserved: 0x4D */
+ MAX77802_REG_BUCK7CTRL = 0x4E,
+ MAX77802_REG_BUCK7OUT = 0x4F,
+ /* Reserved: 0x50 */
+ MAX77802_REG_BUCK8CTRL = 0x51,
+ MAX77802_REG_BUCK8OUT = 0x52,
+ /* Reserved: 0x53 */
+ MAX77802_REG_BUCK9CTRL = 0x54,
+ MAX77802_REG_BUCK9OUT = 0x55,
+ /* Reserved: 0x56 */
+ MAX77802_REG_BUCK10CTRL = 0x57,
+ MAX77802_REG_BUCK10OUT = 0x58,
+
+ /* Reserved: 0x59-0x5F */
+
+ MAX77802_REG_LDO1CTRL1 = 0x60,
+ MAX77802_REG_LDO2CTRL1 = 0x61,
+ MAX77802_REG_LDO3CTRL1 = 0x62,
+ MAX77802_REG_LDO4CTRL1 = 0x63,
+ MAX77802_REG_LDO5CTRL1 = 0x64,
+ MAX77802_REG_LDO6CTRL1 = 0x65,
+ MAX77802_REG_LDO7CTRL1 = 0x66,
+ MAX77802_REG_LDO8CTRL1 = 0x67,
+ MAX77802_REG_LDO9CTRL1 = 0x68,
+ MAX77802_REG_LDO10CTRL1 = 0x69,
+ MAX77802_REG_LDO11CTRL1 = 0x6A,
+ MAX77802_REG_LDO12CTRL1 = 0x6B,
+ MAX77802_REG_LDO13CTRL1 = 0x6C,
+ MAX77802_REG_LDO14CTRL1 = 0x6D,
+ MAX77802_REG_LDO15CTRL1 = 0x6E,
+ /* Reserved: 0x6F */
+ MAX77802_REG_LDO17CTRL1 = 0x70,
+ MAX77802_REG_LDO18CTRL1 = 0x71,
+ MAX77802_REG_LDO19CTRL1 = 0x72,
+ MAX77802_REG_LDO20CTRL1 = 0x73,
+ MAX77802_REG_LDO21CTRL1 = 0x74,
+ MAX77802_REG_LDO22CTRL1 = 0x75,
+ MAX77802_REG_LDO23CTRL1 = 0x76,
+ MAX77802_REG_LDO24CTRL1 = 0x77,
+ MAX77802_REG_LDO25CTRL1 = 0x78,
+ MAX77802_REG_LDO26CTRL1 = 0x79,
+ MAX77802_REG_LDO27CTRL1 = 0x7A,
+ MAX77802_REG_LDO28CTRL1 = 0x7B,
+ MAX77802_REG_LDO29CTRL1 = 0x7C,
+ MAX77802_REG_LDO30CTRL1 = 0x7D,
+ /* Reserved: 0x7E */
+ MAX77802_REG_LDO32CTRL1 = 0x7F,
+ MAX77802_REG_LDO33CTRL1 = 0x80,
+ MAX77802_REG_LDO34CTRL1 = 0x81,
+ MAX77802_REG_LDO35CTRL1 = 0x82,
+ /* Reserved: 0x83-0x8F */
+ MAX77802_REG_LDO1CTRL2 = 0x90,
+ MAX77802_REG_LDO2CTRL2 = 0x91,
+ MAX77802_REG_LDO3CTRL2 = 0x92,
+ MAX77802_REG_LDO4CTRL2 = 0x93,
+ MAX77802_REG_LDO5CTRL2 = 0x94,
+ MAX77802_REG_LDO6CTRL2 = 0x95,
+ MAX77802_REG_LDO7CTRL2 = 0x96,
+ MAX77802_REG_LDO8CTRL2 = 0x97,
+ MAX77802_REG_LDO9CTRL2 = 0x98,
+ MAX77802_REG_LDO10CTRL2 = 0x99,
+ MAX77802_REG_LDO11CTRL2 = 0x9A,
+ MAX77802_REG_LDO12CTRL2 = 0x9B,
+ MAX77802_REG_LDO13CTRL2 = 0x9C,
+ MAX77802_REG_LDO14CTRL2 = 0x9D,
+ MAX77802_REG_LDO15CTRL2 = 0x9E,
+ /* Reserved: 0x9F */
+ MAX77802_REG_LDO17CTRL2 = 0xA0,
+ MAX77802_REG_LDO18CTRL2 = 0xA1,
+ MAX77802_REG_LDO19CTRL2 = 0xA2,
+ MAX77802_REG_LDO20CTRL2 = 0xA3,
+ MAX77802_REG_LDO21CTRL2 = 0xA4,
+ MAX77802_REG_LDO22CTRL2 = 0xA5,
+ MAX77802_REG_LDO23CTRL2 = 0xA6,
+ MAX77802_REG_LDO24CTRL2 = 0xA7,
+ MAX77802_REG_LDO25CTRL2 = 0xA8,
+ MAX77802_REG_LDO26CTRL2 = 0xA9,
+ MAX77802_REG_LDO27CTRL2 = 0xAA,
+ MAX77802_REG_LDO28CTRL2 = 0xAB,
+ MAX77802_REG_LDO29CTRL2 = 0xAC,
+ MAX77802_REG_LDO30CTRL2 = 0xAD,
+ /* Reserved: 0xAE */
+ MAX77802_REG_LDO32CTRL2 = 0xAF,
+ MAX77802_REG_LDO33CTRL2 = 0xB0,
+ MAX77802_REG_LDO34CTRL2 = 0xB1,
+ MAX77802_REG_LDO35CTRL2 = 0xB2,
+ /* Reserved: 0xB3 */
+
+ MAX77802_REG_BBAT_CHG = 0xB4,
+ MAX77802_REG_32KHZ = 0xB5,
+
+ MAX77802_REG_PMIC_END = 0xB6,
+};
+
+enum max77802_rtc_reg {
+ MAX77802_RTC_INT = 0xC0,
+ MAX77802_RTC_INTM = 0xC1,
+ MAX77802_RTC_CONTROLM = 0xC2,
+ MAX77802_RTC_CONTROL = 0xC3,
+ MAX77802_RTC_UPDATE0 = 0xC4,
+ MAX77802_RTC_UPDATE1 = 0xC5,
+ MAX77802_WTSR_SMPL_CNTL = 0xC6,
+ MAX77802_RTC_SEC = 0xC7,
+ MAX77802_RTC_MIN = 0xC8,
+ MAX77802_RTC_HOUR = 0xC9,
+ MAX77802_RTC_WEEKDAY = 0xCA,
+ MAX77802_RTC_MONTH = 0xCB,
+ MAX77802_RTC_YEAR = 0xCC,
+ MAX77802_RTC_DATE = 0xCD,
+ MAX77802_RTC_AE1 = 0xCE,
+ MAX77802_ALARM1_SEC = 0xCF,
+ MAX77802_ALARM1_MIN = 0xD0,
+ MAX77802_ALARM1_HOUR = 0xD1,
+ MAX77802_ALARM1_WEEKDAY = 0xD2,
+ MAX77802_ALARM1_MONTH = 0xD3,
+ MAX77802_ALARM1_YEAR = 0xD4,
+ MAX77802_ALARM1_DATE = 0xD5,
+ MAX77802_RTC_AE2 = 0xD6,
+ MAX77802_ALARM2_SEC = 0xD7,
+ MAX77802_ALARM2_MIN = 0xD8,
+ MAX77802_ALARM2_HOUR = 0xD9,
+ MAX77802_ALARM2_WEEKDAY = 0xDA,
+ MAX77802_ALARM2_MONTH = 0xDB,
+ MAX77802_ALARM2_YEAR = 0xDC,
+ MAX77802_ALARM2_DATE = 0xDD,
+
+ MAX77802_RTC_END = 0xDF,
+};
+
+#define MAX77802_IRQSRC_PMIC (0)
+#define MAX77802_IRQSRC_RTC BIT(0)
+
+enum max77802_irq_source {
+ PMIC_INT1 = 0,
+ PMIC_INT2,
+ RTC_INT,
+
+ MAX77802_IRQ_GROUP_NR,
+};
+
+enum max77802_irq {
+ MAX77802_PMICIRQ_PWRONF,
+ MAX77802_PMICIRQ_PWRONR,
+ MAX77802_PMICIRQ_JIGONBF,
+ MAX77802_PMICIRQ_JIGONBR,
+ MAX77802_PMICIRQ_ACOKBF,
+ MAX77802_PMICIRQ_ACOKBR,
+ MAX77802_PMICIRQ_ONKEY1S,
+ MAX77802_PMICIRQ_MRSTB,
+
+ MAX77802_PMICIRQ_140C,
+ MAX77802_PMICIRQ_120C,
+
+ MAX77802_RTCIRQ_RTC60S = 0,
+ MAX77802_RTCIRQ_RTCA1,
+ MAX77802_RTCIRQ_RTCA2,
+ MAX77802_RTCIRQ_SMPL,
+ MAX77802_RTCIRQ_RTC1S,
+ MAX77802_RTCIRQ_WTSR,
+
+ MAX77802_IRQ_NR,
+};
+
+#define MAX77802_INT1_PWRONF_MSK BIT(0)
+#define MAX77802_INT1_PWRONR_MSK BIT(1)
+#define MAX77802_INT1_JIGONBF_MSK BIT(2)
+#define MAX77802_INT1_JIGONBR_MSK BIT(3)
+#define MAX77802_INT1_ACOKBF_MSK BIT(4)
+#define MAX77802_INT1_ACOKBR_MSK BIT(5)
+#define MAX77802_INT1_ONKEY1S_MSK BIT(6)
+#define MAX77802_INT1_MRSTB_MSK BIT(7)
+
+#define MAX77802_INT2_140C_MSK BIT(0)
+#define MAX77802_INT2_120C_MSK BIT(1)
+
+#define MAX77802_RTCINT_RTC60S_MSK BIT(0)
+#define MAX77802_RTCINT_RTCA1_MSK BIT(1)
+#define MAX77802_RTCINT_RTCA2_MSK BIT(2)
+#define MAX77802_RTCINT_SMPL_MSK BIT(3)
+#define MAX77802_RTCINT_RTC1S_MSK BIT(4)
+#define MAX77802_RTCINT_WTSR_MSK BIT(5)
+
+struct max77802_dev {
+ struct device *dev;
+ struct i2c_client *i2c; /* 0x09 / PMIC, Battery Control and RTC */
+
+ int type;
+
+ struct regmap *regmap; /* regmap for mfd and rtc devices */
+ struct regmap_irq_chip_data *irq_data;
+ struct regmap_irq_chip_data *rtc_irq_data;
+
+ int irq;
+ bool wakeup;
+ struct mutex irqlock;
+ int irq_masks_cur[MAX77802_IRQ_GROUP_NR];
+ int irq_masks_cache[MAX77802_IRQ_GROUP_NR];
+};
+
+enum max77802_types {
+ TYPE_MAX77802,
+};
+
+extern int max77802_irq_init(struct max77802_dev *max77802);
+extern void max77802_irq_exit(struct max77802_dev *max77802);
+extern int max77802_irq_resume(struct max77802_dev *max77802);
+
+#endif /* __LINUX_MFD_MAX77802_PRIV_H */
diff --git a/include/linux/mfd/max77802.h b/include/linux/mfd/max77802.h
new file mode 100644
index 0000000..86fb751
--- /dev/null
+++ b/include/linux/mfd/max77802.h
@@ -0,0 +1,124 @@
+/*
+ * max77802.h - Driver for the Maxim 77802
+ *
+ * Copyright (c) 2013-2014 Google, Inc
+ *
+ * Copyright (C) 2012 Samsung Electrnoics
+ * Chiwoong Byun <woong.byun@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * This driver is based on max8997.h
+ *
+ * MAX77802 has PMIC, RTC devices.
+ * The devices share the same I2C bus and included in
+ * this mfd driver.
+ */
+
+#ifndef __LINUX_MFD_MAX77802_H
+#define __LINUX_MFD_MAX77802_H
+
+#include <linux/regulator/consumer.h>
+
+/* MAX77802 regulator IDs - LDOS must come before BUCKs */
+enum max77802_regulators {
+ MAX77802_LDO1 = 0,
+ MAX77802_LDO2,
+ MAX77802_LDO3,
+ MAX77802_LDO4,
+ MAX77802_LDO5,
+ MAX77802_LDO6,
+ MAX77802_LDO7,
+ MAX77802_LDO8,
+ MAX77802_LDO9,
+ MAX77802_LDO10,
+ MAX77802_LDO11,
+ MAX77802_LDO12,
+ MAX77802_LDO13,
+ MAX77802_LDO14,
+ MAX77802_LDO15,
+ MAX77802_LDO16,
+ MAX77802_LDO17,
+ MAX77802_LDO18,
+ MAX77802_LDO19,
+ MAX77802_LDO20,
+ MAX77802_LDO21,
+ MAX77802_LDO22,
+ MAX77802_LDO23,
+ MAX77802_LDO24,
+ MAX77802_LDO25,
+ MAX77802_LDO26,
+ MAX77802_LDO27,
+ MAX77802_LDO28,
+ MAX77802_LDO29,
+ MAX77802_LDO30,
+ MAX77802_LDO31,
+ MAX77802_LDO32,
+ MAX77802_LDO33,
+ MAX77802_LDO34,
+ MAX77802_LDO35,
+ MAX77802_BUCK1,
+ MAX77802_BUCK2,
+ MAX77802_BUCK3,
+ MAX77802_BUCK4,
+ MAX77802_BUCK5,
+ MAX77802_BUCK6,
+ MAX77802_BUCK7,
+ MAX77802_BUCK8,
+ MAX77802_BUCK9,
+ MAX77802_BUCK10,
+
+ MAX77802_REG_MAX,
+};
+
+struct max77802_regulator_data {
+ int id;
+ int opmode;
+ struct regulator_init_data *initdata;
+ struct device_node *of_node;
+};
+
+enum max77802_opmode {
+ MAX77802_OPMODE_OFF,
+ MAX77802_OPMODE_STANDBY,
+ MAX77802_OPMODE_LP,
+ MAX77802_OPMODE_NORMAL,
+};
+
+struct max77802_opmode_data {
+ int id;
+ int mode;
+};
+
+struct max77802_platform_data {
+ /* IRQ */
+ int irq_gpio;
+ int ono;
+ int wakeup;
+
+ /* ---- PMIC ---- */
+ struct max77802_regulator_data *regulators;
+ int num_regulators;
+
+ struct max77802_opmode_data *opmode_data;
+
+ /*
+ * GPIO-DVS feature is not fully enabled with the current version of
+ * MAX77802 driver, but the driver does support using a DVS index other
+ * than the default of 0.
+ */
+ struct gpio_desc *buck_gpio_dvs[3]; /* GPIO of [0]DVS1, [1]DVS2, [2]DVS3 */
+ int buck_default_idx; /* Default value of DVS1, 2, 3 */
+
+ struct gpio_desc *buck_gpio_selb[5]; /* 77802: 1, 2, 3, 4, 6 */
+};
+
+#endif /* __LINUX_MFD_MAX77802_H */
--
2.0.0.rc2