4 files changed, 530 insertions, 0 deletions

diff --git a/drivers/mfd/88pm8607.c b/drivers/mfd/88pm8607.c
new file mode 100644
index 000000000000..7e3f65907993
--- /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 a296e717e86e..26a36f887357 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -319,6 +319,16 @@ config EZX_PCAP
           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 11350c1d9301..2596add427a2 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -52,3 +52,4 @@ obj-$(CONFIG_PCF50633_ADC)	+= pcf50633-adc.o
 obj-$(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 000000000000..f41b428d2cec
--- /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 */