mfd: Add 88PM8607 driver
This adds a core driver for 88PM8607 found in Marvell DKB development
platform. This driver is a proxy for all accesses to 88PM8607
sub-drivers which will be merged on top of this one, RTC, regulators,
battery and so on.
This chip is manufactured by Marvell.
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/88pm8607.c b/drivers/mfd/88pm8607.c
new file mode 100644
index 0000000..7e3f659
--- /dev/null
+++ b/drivers/mfd/88pm8607.c
@@ -0,0 +1,302 @@
+/*
+ * Base driver for Marvell 88PM8607
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/i2c.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/88pm8607.h>
+
+
+#define PM8607_REG_RESOURCE(_start, _end) \
+{ \
+ .start = PM8607_##_start, \
+ .end = PM8607_##_end, \
+ .flags = IORESOURCE_IO, \
+}
+
+static struct resource pm8607_regulator_resources[] = {
+ PM8607_REG_RESOURCE(BUCK1, BUCK1),
+ PM8607_REG_RESOURCE(BUCK2, BUCK2),
+ PM8607_REG_RESOURCE(BUCK3, BUCK3),
+ PM8607_REG_RESOURCE(LDO1, LDO1),
+ PM8607_REG_RESOURCE(LDO2, LDO2),
+ PM8607_REG_RESOURCE(LDO3, LDO3),
+ PM8607_REG_RESOURCE(LDO4, LDO4),
+ PM8607_REG_RESOURCE(LDO5, LDO5),
+ PM8607_REG_RESOURCE(LDO6, LDO6),
+ PM8607_REG_RESOURCE(LDO7, LDO7),
+ PM8607_REG_RESOURCE(LDO8, LDO8),
+ PM8607_REG_RESOURCE(LDO9, LDO9),
+ PM8607_REG_RESOURCE(LDO10, LDO10),
+ PM8607_REG_RESOURCE(LDO12, LDO12),
+ PM8607_REG_RESOURCE(LDO14, LDO14),
+};
+
+#define PM8607_REG_DEVS(_name, _id) \
+{ \
+ .name = "88pm8607-" #_name, \
+ .num_resources = 1, \
+ .resources = &pm8607_regulator_resources[PM8607_ID_##_id], \
+}
+
+static struct mfd_cell pm8607_devs[] = {
+ PM8607_REG_DEVS(buck1, BUCK1),
+ PM8607_REG_DEVS(buck2, BUCK2),
+ PM8607_REG_DEVS(buck3, BUCK3),
+ PM8607_REG_DEVS(ldo1, LDO1),
+ PM8607_REG_DEVS(ldo2, LDO2),
+ PM8607_REG_DEVS(ldo3, LDO3),
+ PM8607_REG_DEVS(ldo4, LDO4),
+ PM8607_REG_DEVS(ldo5, LDO5),
+ PM8607_REG_DEVS(ldo6, LDO6),
+ PM8607_REG_DEVS(ldo7, LDO7),
+ PM8607_REG_DEVS(ldo8, LDO8),
+ PM8607_REG_DEVS(ldo9, LDO9),
+ PM8607_REG_DEVS(ldo10, LDO10),
+ PM8607_REG_DEVS(ldo12, LDO12),
+ PM8607_REG_DEVS(ldo14, LDO14),
+};
+
+static inline int pm8607_read_device(struct pm8607_chip *chip,
+ int reg, int bytes, void *dest)
+{
+ struct i2c_client *i2c = chip->client;
+ unsigned char data;
+ int ret;
+
+ data = (unsigned char)reg;
+ ret = i2c_master_send(i2c, &data, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = i2c_master_recv(i2c, dest, bytes);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+static inline int pm8607_write_device(struct pm8607_chip *chip,
+ int reg, int bytes, void *src)
+{
+ struct i2c_client *i2c = chip->client;
+ unsigned char buf[bytes + 1];
+ int ret;
+
+ buf[0] = (unsigned char)reg;
+ memcpy(&buf[1], src, bytes);
+
+ ret = i2c_master_send(i2c, buf, bytes + 1);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+int pm8607_reg_read(struct pm8607_chip *chip, int reg)
+{
+ unsigned char data;
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = chip->read(chip, reg, 1, &data);
+ mutex_unlock(&chip->io_lock);
+
+ if (ret < 0)
+ return ret;
+ else
+ return (int)data;
+}
+EXPORT_SYMBOL(pm8607_reg_read);
+
+int pm8607_reg_write(struct pm8607_chip *chip, int reg,
+ unsigned char data)
+{
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = chip->write(chip, reg, 1, &data);
+ mutex_unlock(&chip->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(pm8607_reg_write);
+
+int pm8607_bulk_read(struct pm8607_chip *chip, int reg,
+ int count, unsigned char *buf)
+{
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = chip->read(chip, reg, count, buf);
+ mutex_unlock(&chip->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(pm8607_bulk_read);
+
+int pm8607_bulk_write(struct pm8607_chip *chip, int reg,
+ int count, unsigned char *buf)
+{
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = chip->write(chip, reg, count, buf);
+ mutex_unlock(&chip->io_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(pm8607_bulk_write);
+
+int pm8607_set_bits(struct pm8607_chip *chip, int reg,
+ unsigned char mask, unsigned char data)
+{
+ unsigned char value;
+ int ret;
+
+ mutex_lock(&chip->io_lock);
+ ret = chip->read(chip, reg, 1, &value);
+ if (ret < 0)
+ goto out;
+ value &= ~mask;
+ value |= data;
+ ret = chip->write(chip, reg, 1, &value);
+out:
+ mutex_unlock(&chip->io_lock);
+ return ret;
+}
+EXPORT_SYMBOL(pm8607_set_bits);
+
+
+static const struct i2c_device_id pm8607_id_table[] = {
+ { "88PM8607", 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, pm8607_id_table);
+
+
+static int __devinit pm8607_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct pm8607_platform_data *pdata = client->dev.platform_data;
+ struct pm8607_chip *chip;
+ int i, count;
+ int ret;
+
+ chip = kzalloc(sizeof(struct pm8607_chip), GFP_KERNEL);
+ if (chip == NULL)
+ return -ENOMEM;
+
+ chip->client = client;
+ chip->dev = &client->dev;
+ chip->read = pm8607_read_device;
+ chip->write = pm8607_write_device;
+ i2c_set_clientdata(client, chip);
+
+ mutex_init(&chip->io_lock);
+ dev_set_drvdata(chip->dev, chip);
+
+ ret = pm8607_reg_read(chip, PM8607_CHIP_ID);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
+ goto out;
+ }
+ if ((ret & CHIP_ID_MASK) == CHIP_ID)
+ dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
+ ret);
+ else {
+ dev_err(chip->dev, "Failed to detect Marvell 88PM8607. "
+ "Chip ID: %02x\n", ret);
+ goto out;
+ }
+ chip->chip_id = ret;
+
+ ret = pm8607_reg_read(chip, PM8607_BUCK3);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret);
+ goto out;
+ }
+ if (ret & PM8607_BUCK3_DOUBLE)
+ chip->buck3_double = 1;
+
+ ret = pm8607_reg_read(chip, PM8607_MISC1);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
+ goto out;
+ }
+ if (pdata->i2c_port == PI2C_PORT)
+ ret |= PM8607_MISC1_PI2C;
+ else
+ ret &= ~PM8607_MISC1_PI2C;
+ ret = pm8607_reg_write(chip, PM8607_MISC1, ret);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to write MISC1 register: %d\n", ret);
+ goto out;
+ }
+
+
+ count = ARRAY_SIZE(pm8607_devs);
+ for (i = 0; i < count; i++) {
+ ret = mfd_add_devices(chip->dev, i, &pm8607_devs[i],
+ 1, NULL, 0);
+ if (ret != 0) {
+ dev_err(chip->dev, "Failed to add subdevs\n");
+ goto out;
+ }
+ }
+
+ return 0;
+
+out:
+ i2c_set_clientdata(client, NULL);
+ kfree(chip);
+ return ret;
+}
+
+static int __devexit pm8607_remove(struct i2c_client *client)
+{
+ struct pm8607_chip *chip = i2c_get_clientdata(client);
+
+ mfd_remove_devices(chip->dev);
+ kfree(chip);
+ return 0;
+}
+
+static struct i2c_driver pm8607_driver = {
+ .driver = {
+ .name = "88PM8607",
+ .owner = THIS_MODULE,
+ },
+ .probe = pm8607_probe,
+ .remove = __devexit_p(pm8607_remove),
+ .id_table = pm8607_id_table,
+};
+
+static int __init pm8607_init(void)
+{
+ int ret;
+ ret = i2c_add_driver(&pm8607_driver);
+ if (ret != 0)
+ pr_err("Failed to register 88PM8607 I2C driver: %d\n", ret);
+ return ret;
+}
+subsys_initcall(pm8607_init);
+
+static void __exit pm8607_exit(void)
+{
+ i2c_del_driver(&pm8607_driver);
+}
+module_exit(pm8607_exit);
+
+MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM8607");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index a296e71..26a36f8 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -319,6 +319,16 @@
This enables the PCAP ASIC present on EZX Phones. This is
needed for MMC, TouchScreen, Sound, USB, etc..
+config MFD_88PM8607
+ bool "Support Marvell 88PM8607"
+ depends on I2C
+ select MFD_CORE
+ help
+ This supports for Marvell 88PM8607 Power Management IC. This includes
+ the I2C driver and the core APIs _only_, you have to select
+ individual components like voltage regulators, RTC and
+ battery-charger under the corresponding menus.
+
endmenu
menu "Multimedia Capabilities Port drivers"
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 11350c1..2596add 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -52,3 +52,4 @@
obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
+obj-$(CONFIG_MFD_88PM8607) += 88pm8607.o
diff --git a/include/linux/mfd/88pm8607.h b/include/linux/mfd/88pm8607.h
new file mode 100644
index 0000000..f41b428
--- /dev/null
+++ b/include/linux/mfd/88pm8607.h
@@ -0,0 +1,217 @@
+/*
+ * Marvell 88PM8607 Interface
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * 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_88PM8607_H
+#define __LINUX_MFD_88PM8607_H
+
+enum {
+ PM8607_ID_BUCK1 = 0,
+ PM8607_ID_BUCK2,
+ PM8607_ID_BUCK3,
+
+ PM8607_ID_LDO1,
+ PM8607_ID_LDO2,
+ PM8607_ID_LDO3,
+ PM8607_ID_LDO4,
+ PM8607_ID_LDO5,
+ PM8607_ID_LDO6,
+ PM8607_ID_LDO7,
+ PM8607_ID_LDO8,
+ PM8607_ID_LDO9,
+ PM8607_ID_LDO10,
+ PM8607_ID_LDO12,
+ PM8607_ID_LDO14,
+
+ PM8607_ID_RG_MAX,
+};
+
+#define CHIP_ID (0x40)
+#define CHIP_ID_MASK (0xF8)
+
+/* Interrupt Registers */
+#define PM8607_STATUS_1 (0x01)
+#define PM8607_STATUS_2 (0x02)
+#define PM8607_INT_STATUS1 (0x03)
+#define PM8607_INT_STATUS2 (0x04)
+#define PM8607_INT_STATUS3 (0x05)
+#define PM8607_INT_MASK_1 (0x06)
+#define PM8607_INT_MASK_2 (0x07)
+#define PM8607_INT_MASK_3 (0x08)
+
+/* Regulator Control Registers */
+#define PM8607_LDO1 (0x10)
+#define PM8607_LDO2 (0x11)
+#define PM8607_LDO3 (0x12)
+#define PM8607_LDO4 (0x13)
+#define PM8607_LDO5 (0x14)
+#define PM8607_LDO6 (0x15)
+#define PM8607_LDO7 (0x16)
+#define PM8607_LDO8 (0x17)
+#define PM8607_LDO9 (0x18)
+#define PM8607_LDO10 (0x19)
+#define PM8607_LDO12 (0x1A)
+#define PM8607_LDO14 (0x1B)
+#define PM8607_SLEEP_MODE1 (0x1C)
+#define PM8607_SLEEP_MODE2 (0x1D)
+#define PM8607_SLEEP_MODE3 (0x1E)
+#define PM8607_SLEEP_MODE4 (0x1F)
+#define PM8607_GO (0x20)
+#define PM8607_SLEEP_BUCK1 (0x21)
+#define PM8607_SLEEP_BUCK2 (0x22)
+#define PM8607_SLEEP_BUCK3 (0x23)
+#define PM8607_BUCK1 (0x24)
+#define PM8607_BUCK2 (0x25)
+#define PM8607_BUCK3 (0x26)
+#define PM8607_BUCK_CONTROLS (0x27)
+#define PM8607_SUPPLIES_EN11 (0x2B)
+#define PM8607_SUPPLIES_EN12 (0x2C)
+#define PM8607_GROUP1 (0x2D)
+#define PM8607_GROUP2 (0x2E)
+#define PM8607_GROUP3 (0x2F)
+#define PM8607_GROUP4 (0x30)
+#define PM8607_GROUP5 (0x31)
+#define PM8607_GROUP6 (0x32)
+#define PM8607_SUPPLIES_EN21 (0x33)
+#define PM8607_SUPPLIES_EN22 (0x34)
+
+/* RTC Control Registers */
+#define PM8607_RTC1 (0xA0)
+#define PM8607_RTC_COUNTER1 (0xA1)
+#define PM8607_RTC_COUNTER2 (0xA2)
+#define PM8607_RTC_COUNTER3 (0xA3)
+#define PM8607_RTC_COUNTER4 (0xA4)
+#define PM8607_RTC_EXPIRE1 (0xA5)
+#define PM8607_RTC_EXPIRE2 (0xA6)
+#define PM8607_RTC_EXPIRE3 (0xA7)
+#define PM8607_RTC_EXPIRE4 (0xA8)
+#define PM8607_RTC_TRIM1 (0xA9)
+#define PM8607_RTC_TRIM2 (0xAA)
+#define PM8607_RTC_TRIM3 (0xAB)
+#define PM8607_RTC_TRIM4 (0xAC)
+#define PM8607_RTC_MISC1 (0xAD)
+#define PM8607_RTC_MISC2 (0xAE)
+#define PM8607_RTC_MISC3 (0xAF)
+
+/* Misc Registers */
+#define PM8607_CHIP_ID (0x00)
+#define PM8607_LDO1 (0x10)
+#define PM8607_DVC3 (0x26)
+#define PM8607_MISC1 (0x40)
+
+/* bit definitions for PM8607 events */
+#define PM8607_EVENT_ONKEY (1 << 0)
+#define PM8607_EVENT_EXTON (1 << 1)
+#define PM8607_EVENT_CHG (1 << 2)
+#define PM8607_EVENT_BAT (1 << 3)
+#define PM8607_EVENT_RTC (1 << 4)
+#define PM8607_EVENT_CC (1 << 5)
+#define PM8607_EVENT_VBAT (1 << 8)
+#define PM8607_EVENT_VCHG (1 << 9)
+#define PM8607_EVENT_VSYS (1 << 10)
+#define PM8607_EVENT_TINT (1 << 11)
+#define PM8607_EVENT_GPADC0 (1 << 12)
+#define PM8607_EVENT_GPADC1 (1 << 13)
+#define PM8607_EVENT_GPADC2 (1 << 14)
+#define PM8607_EVENT_GPADC3 (1 << 15)
+#define PM8607_EVENT_AUDIO_SHORT (1 << 16)
+#define PM8607_EVENT_PEN (1 << 17)
+#define PM8607_EVENT_HEADSET (1 << 18)
+#define PM8607_EVENT_HOOK (1 << 19)
+#define PM8607_EVENT_MICIN (1 << 20)
+#define PM8607_EVENT_CHG_TIMEOUT (1 << 21)
+#define PM8607_EVENT_CHG_DONE (1 << 22)
+#define PM8607_EVENT_CHG_FAULT (1 << 23)
+
+/* bit definitions of Status Query Interface */
+#define PM8607_STATUS_CC (1 << 3)
+#define PM8607_STATUS_PEN (1 << 4)
+#define PM8607_STATUS_HEADSET (1 << 5)
+#define PM8607_STATUS_HOOK (1 << 6)
+#define PM8607_STATUS_MICIN (1 << 7)
+#define PM8607_STATUS_ONKEY (1 << 8)
+#define PM8607_STATUS_EXTON (1 << 9)
+#define PM8607_STATUS_CHG (1 << 10)
+#define PM8607_STATUS_BAT (1 << 11)
+#define PM8607_STATUS_VBUS (1 << 12)
+#define PM8607_STATUS_OV (1 << 13)
+
+/* bit definitions of BUCK3 */
+#define PM8607_BUCK3_DOUBLE (1 << 6)
+
+/* bit definitions of Misc1 */
+#define PM8607_MISC1_PI2C (1 << 0)
+
+/* Interrupt Number in 88PM8607 */
+enum {
+ PM8607_IRQ_ONKEY = 0,
+ PM8607_IRQ_EXTON,
+ PM8607_IRQ_CHG,
+ PM8607_IRQ_BAT,
+ PM8607_IRQ_RTC,
+ PM8607_IRQ_VBAT = 8,
+ PM8607_IRQ_VCHG,
+ PM8607_IRQ_VSYS,
+ PM8607_IRQ_TINT,
+ PM8607_IRQ_GPADC0,
+ PM8607_IRQ_GPADC1,
+ PM8607_IRQ_GPADC2,
+ PM8607_IRQ_GPADC3,
+ PM8607_IRQ_AUDIO_SHORT = 16,
+ PM8607_IRQ_PEN,
+ PM8607_IRQ_HEADSET,
+ PM8607_IRQ_HOOK,
+ PM8607_IRQ_MICIN,
+ PM8607_IRQ_CHG_FAIL,
+ PM8607_IRQ_CHG_DONE,
+ PM8607_IRQ_CHG_FAULT,
+};
+
+enum {
+ PM8607_CHIP_A0 = 0x40,
+ PM8607_CHIP_A1 = 0x41,
+ PM8607_CHIP_B0 = 0x48,
+};
+
+
+struct pm8607_chip {
+ struct device *dev;
+ struct mutex io_lock;
+ struct i2c_client *client;
+
+ int (*read)(struct pm8607_chip *chip, int reg, int bytes, void *dest);
+ int (*write)(struct pm8607_chip *chip, int reg, int bytes, void *src);
+
+ int buck3_double; /* DVC ramp slope double */
+ unsigned char chip_id;
+
+};
+
+#define PM8607_MAX_REGULATOR 15 /* 3 Bucks, 12 LDOs */
+
+enum {
+ GI2C_PORT = 0,
+ PI2C_PORT,
+};
+
+struct pm8607_platform_data {
+ int i2c_port; /* Controlled by GI2C or PI2C */
+ struct regulator_init_data *regulator[PM8607_MAX_REGULATOR];
+};
+
+extern int pm8607_reg_read(struct pm8607_chip *, int);
+extern int pm8607_reg_write(struct pm8607_chip *, int, unsigned char);
+extern int pm8607_bulk_read(struct pm8607_chip *, int, int,
+ unsigned char *);
+extern int pm8607_bulk_write(struct pm8607_chip *, int, int,
+ unsigned char *);
+extern int pm8607_set_bits(struct pm8607_chip *, int, unsigned char,
+ unsigned char);
+#endif /* __LINUX_MFD_88PM8607_H */