Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / mfd / 88pm860x-core.c
diff --git a/kernel/drivers/mfd/88pm860x-core.c b/kernel/drivers/mfd/88pm860x-core.c
new file mode 100644 (file)
index 0000000..d2a85cd
--- /dev/null
@@ -0,0 +1,1288 @@
+/*
+ * Base driver for Marvell 88PM8607
+ *
+ * Copyright (C) 2009 Marvell International Ltd.
+ *
+ * Author: 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/err.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/88pm860x.h>
+#include <linux/regulator/machine.h>
+#include <linux/power/charger-manager.h>
+
+#define INT_STATUS_NUM                 3
+
+static struct resource bk0_resources[] = {
+       {2, 2, "duty cycle", IORESOURCE_REG, },
+       {3, 3, "always on",  IORESOURCE_REG, },
+       {3, 3, "current",    IORESOURCE_REG, },
+};
+static struct resource bk1_resources[] = {
+       {4, 4, "duty cycle", IORESOURCE_REG, },
+       {5, 5, "always on",  IORESOURCE_REG, },
+       {5, 5, "current",    IORESOURCE_REG, },
+};
+static struct resource bk2_resources[] = {
+       {6, 6, "duty cycle", IORESOURCE_REG, },
+       {7, 7, "always on",  IORESOURCE_REG, },
+       {5, 5, "current",    IORESOURCE_REG, },
+};
+
+static struct resource led0_resources[] = {
+       /* RGB1 Red LED */
+       {0xd, 0xd, "control", IORESOURCE_REG, },
+       {0xc, 0xc, "blink",   IORESOURCE_REG, },
+};
+static struct resource led1_resources[] = {
+       /* RGB1 Green LED */
+       {0xe, 0xe, "control", IORESOURCE_REG, },
+       {0xc, 0xc, "blink",   IORESOURCE_REG, },
+};
+static struct resource led2_resources[] = {
+       /* RGB1 Blue LED */
+       {0xf, 0xf, "control", IORESOURCE_REG, },
+       {0xc, 0xc, "blink",   IORESOURCE_REG, },
+};
+static struct resource led3_resources[] = {
+       /* RGB2 Red LED */
+       {0x9, 0x9, "control", IORESOURCE_REG, },
+       {0x8, 0x8, "blink",   IORESOURCE_REG, },
+};
+static struct resource led4_resources[] = {
+       /* RGB2 Green LED */
+       {0xa, 0xa, "control", IORESOURCE_REG, },
+       {0x8, 0x8, "blink",   IORESOURCE_REG, },
+};
+static struct resource led5_resources[] = {
+       /* RGB2 Blue LED */
+       {0xb, 0xb, "control", IORESOURCE_REG, },
+       {0x8, 0x8, "blink",   IORESOURCE_REG, },
+};
+
+static struct resource buck1_resources[] = {
+       {0x24, 0x24, "buck set", IORESOURCE_REG, },
+};
+static struct resource buck2_resources[] = {
+       {0x25, 0x25, "buck set", IORESOURCE_REG, },
+};
+static struct resource buck3_resources[] = {
+       {0x26, 0x26, "buck set", IORESOURCE_REG, },
+};
+static struct resource ldo1_resources[] = {
+       {0x10, 0x10, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo2_resources[] = {
+       {0x11, 0x11, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo3_resources[] = {
+       {0x12, 0x12, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo4_resources[] = {
+       {0x13, 0x13, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo5_resources[] = {
+       {0x14, 0x14, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo6_resources[] = {
+       {0x15, 0x15, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo7_resources[] = {
+       {0x16, 0x16, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo8_resources[] = {
+       {0x17, 0x17, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo9_resources[] = {
+       {0x18, 0x18, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo10_resources[] = {
+       {0x19, 0x19, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo12_resources[] = {
+       {0x1a, 0x1a, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo_vibrator_resources[] = {
+       {0x28, 0x28, "ldo set", IORESOURCE_REG, },
+};
+static struct resource ldo14_resources[] = {
+       {0x1b, 0x1b, "ldo set", IORESOURCE_REG, },
+};
+
+static struct resource touch_resources[] = {
+       {PM8607_IRQ_PEN, PM8607_IRQ_PEN, "touch", IORESOURCE_IRQ,},
+};
+
+static struct resource onkey_resources[] = {
+       {PM8607_IRQ_ONKEY, PM8607_IRQ_ONKEY, "onkey", IORESOURCE_IRQ,},
+};
+
+static struct resource codec_resources[] = {
+       /* Headset microphone insertion or removal */
+       {PM8607_IRQ_MICIN,   PM8607_IRQ_MICIN,   "micin",   IORESOURCE_IRQ,},
+       /* Hook-switch press or release */
+       {PM8607_IRQ_HOOK,    PM8607_IRQ_HOOK,    "hook",    IORESOURCE_IRQ,},
+       /* Headset insertion or removal */
+       {PM8607_IRQ_HEADSET, PM8607_IRQ_HEADSET, "headset", IORESOURCE_IRQ,},
+       /* Audio short */
+       {PM8607_IRQ_AUDIO_SHORT, PM8607_IRQ_AUDIO_SHORT, "audio-short",
+        IORESOURCE_IRQ,},
+};
+
+static struct resource battery_resources[] = {
+       {PM8607_IRQ_CC,  PM8607_IRQ_CC,  "columb counter", IORESOURCE_IRQ,},
+       {PM8607_IRQ_BAT, PM8607_IRQ_BAT, "battery",        IORESOURCE_IRQ,},
+};
+
+static struct resource charger_resources[] = {
+       {PM8607_IRQ_CHG,  PM8607_IRQ_CHG,  "charger detect",  IORESOURCE_IRQ,},
+       {PM8607_IRQ_CHG_DONE,  PM8607_IRQ_CHG_DONE,  "charging done",
+        IORESOURCE_IRQ,},
+       {PM8607_IRQ_CHG_FAIL,  PM8607_IRQ_CHG_FAIL,  "charging timeout",
+        IORESOURCE_IRQ,},
+       {PM8607_IRQ_CHG_FAULT, PM8607_IRQ_CHG_FAULT, "charging fault",
+        IORESOURCE_IRQ,},
+       {PM8607_IRQ_GPADC1,    PM8607_IRQ_GPADC1,    "battery temperature",
+        IORESOURCE_IRQ,},
+       {PM8607_IRQ_VBAT, PM8607_IRQ_VBAT, "battery voltage", IORESOURCE_IRQ,},
+       {PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage",    IORESOURCE_IRQ,},
+};
+
+static struct resource rtc_resources[] = {
+       {PM8607_IRQ_RTC, PM8607_IRQ_RTC, "rtc", IORESOURCE_IRQ,},
+};
+
+static struct mfd_cell bk_devs[] = {
+       {
+               .name = "88pm860x-backlight",
+               .id = 0,
+               .num_resources = ARRAY_SIZE(bk0_resources),
+               .resources = bk0_resources,
+       }, {
+               .name = "88pm860x-backlight",
+               .id = 1,
+               .num_resources = ARRAY_SIZE(bk1_resources),
+               .resources = bk1_resources,
+       }, {
+               .name = "88pm860x-backlight",
+               .id = 2,
+               .num_resources = ARRAY_SIZE(bk2_resources),
+               .resources = bk2_resources,
+       },
+};
+
+static struct mfd_cell led_devs[] = {
+       {
+               .name = "88pm860x-led",
+               .id = 0,
+               .num_resources = ARRAY_SIZE(led0_resources),
+               .resources = led0_resources,
+       }, {
+               .name = "88pm860x-led",
+               .id = 1,
+               .num_resources = ARRAY_SIZE(led1_resources),
+               .resources = led1_resources,
+       }, {
+               .name = "88pm860x-led",
+               .id = 2,
+               .num_resources = ARRAY_SIZE(led2_resources),
+               .resources = led2_resources,
+       }, {
+               .name = "88pm860x-led",
+               .id = 3,
+               .num_resources = ARRAY_SIZE(led3_resources),
+               .resources = led3_resources,
+       }, {
+               .name = "88pm860x-led",
+               .id = 4,
+               .num_resources = ARRAY_SIZE(led4_resources),
+               .resources = led4_resources,
+       }, {
+               .name = "88pm860x-led",
+               .id = 5,
+               .num_resources = ARRAY_SIZE(led5_resources),
+               .resources = led5_resources,
+       },
+};
+
+static struct mfd_cell reg_devs[] = {
+       {
+               .name = "88pm860x-regulator",
+               .id = 0,
+               .num_resources = ARRAY_SIZE(buck1_resources),
+               .resources = buck1_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 1,
+               .num_resources = ARRAY_SIZE(buck2_resources),
+               .resources = buck2_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 2,
+               .num_resources = ARRAY_SIZE(buck3_resources),
+               .resources = buck3_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 3,
+               .num_resources = ARRAY_SIZE(ldo1_resources),
+               .resources = ldo1_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 4,
+               .num_resources = ARRAY_SIZE(ldo2_resources),
+               .resources = ldo2_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 5,
+               .num_resources = ARRAY_SIZE(ldo3_resources),
+               .resources = ldo3_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 6,
+               .num_resources = ARRAY_SIZE(ldo4_resources),
+               .resources = ldo4_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 7,
+               .num_resources = ARRAY_SIZE(ldo5_resources),
+               .resources = ldo5_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 8,
+               .num_resources = ARRAY_SIZE(ldo6_resources),
+               .resources = ldo6_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 9,
+               .num_resources = ARRAY_SIZE(ldo7_resources),
+               .resources = ldo7_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 10,
+               .num_resources = ARRAY_SIZE(ldo8_resources),
+               .resources = ldo8_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 11,
+               .num_resources = ARRAY_SIZE(ldo9_resources),
+               .resources = ldo9_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 12,
+               .num_resources = ARRAY_SIZE(ldo10_resources),
+               .resources = ldo10_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 13,
+               .num_resources = ARRAY_SIZE(ldo12_resources),
+               .resources = ldo12_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 14,
+               .num_resources = ARRAY_SIZE(ldo_vibrator_resources),
+               .resources = ldo_vibrator_resources,
+       }, {
+               .name = "88pm860x-regulator",
+               .id = 15,
+               .num_resources = ARRAY_SIZE(ldo14_resources),
+               .resources = ldo14_resources,
+       },
+};
+
+static struct mfd_cell touch_devs[] = {
+       {"88pm860x-touch", -1,},
+};
+
+static struct mfd_cell onkey_devs[] = {
+       {"88pm860x-onkey", -1,},
+};
+
+static struct mfd_cell codec_devs[] = {
+       {"88pm860x-codec", -1,},
+};
+
+static struct regulator_consumer_supply preg_supply[] = {
+       REGULATOR_SUPPLY("preg", "charger-manager"),
+};
+
+static struct regulator_init_data preg_init_data = {
+       .num_consumer_supplies  = ARRAY_SIZE(preg_supply),
+       .consumer_supplies      = &preg_supply[0],
+};
+
+static struct charger_regulator chg_desc_regulator_data[] = {
+       { .regulator_name = "preg", },
+};
+
+static struct mfd_cell power_devs[] = {
+       {"88pm860x-battery", -1,},
+       {"88pm860x-charger", -1,},
+       {"88pm860x-preg",    -1,},
+       {"charger-manager", -1,},
+};
+
+static struct mfd_cell rtc_devs[] = {
+       {"88pm860x-rtc", -1,},
+};
+
+
+struct pm860x_irq_data {
+       int     reg;
+       int     mask_reg;
+       int     enable;         /* enable or not */
+       int     offs;           /* bit offset in mask register */
+};
+
+static struct pm860x_irq_data pm860x_irqs[] = {
+       [PM8607_IRQ_ONKEY] = {
+               .reg            = PM8607_INT_STATUS1,
+               .mask_reg       = PM8607_INT_MASK_1,
+               .offs           = 1 << 0,
+       },
+       [PM8607_IRQ_EXTON] = {
+               .reg            = PM8607_INT_STATUS1,
+               .mask_reg       = PM8607_INT_MASK_1,
+               .offs           = 1 << 1,
+       },
+       [PM8607_IRQ_CHG] = {
+               .reg            = PM8607_INT_STATUS1,
+               .mask_reg       = PM8607_INT_MASK_1,
+               .offs           = 1 << 2,
+       },
+       [PM8607_IRQ_BAT] = {
+               .reg            = PM8607_INT_STATUS1,
+               .mask_reg       = PM8607_INT_MASK_1,
+               .offs           = 1 << 3,
+       },
+       [PM8607_IRQ_RTC] = {
+               .reg            = PM8607_INT_STATUS1,
+               .mask_reg       = PM8607_INT_MASK_1,
+               .offs           = 1 << 4,
+       },
+       [PM8607_IRQ_CC] = {
+               .reg            = PM8607_INT_STATUS1,
+               .mask_reg       = PM8607_INT_MASK_1,
+               .offs           = 1 << 5,
+       },
+       [PM8607_IRQ_VBAT] = {
+               .reg            = PM8607_INT_STATUS2,
+               .mask_reg       = PM8607_INT_MASK_2,
+               .offs           = 1 << 0,
+       },
+       [PM8607_IRQ_VCHG] = {
+               .reg            = PM8607_INT_STATUS2,
+               .mask_reg       = PM8607_INT_MASK_2,
+               .offs           = 1 << 1,
+       },
+       [PM8607_IRQ_VSYS] = {
+               .reg            = PM8607_INT_STATUS2,
+               .mask_reg       = PM8607_INT_MASK_2,
+               .offs           = 1 << 2,
+       },
+       [PM8607_IRQ_TINT] = {
+               .reg            = PM8607_INT_STATUS2,
+               .mask_reg       = PM8607_INT_MASK_2,
+               .offs           = 1 << 3,
+       },
+       [PM8607_IRQ_GPADC0] = {
+               .reg            = PM8607_INT_STATUS2,
+               .mask_reg       = PM8607_INT_MASK_2,
+               .offs           = 1 << 4,
+       },
+       [PM8607_IRQ_GPADC1] = {
+               .reg            = PM8607_INT_STATUS2,
+               .mask_reg       = PM8607_INT_MASK_2,
+               .offs           = 1 << 5,
+       },
+       [PM8607_IRQ_GPADC2] = {
+               .reg            = PM8607_INT_STATUS2,
+               .mask_reg       = PM8607_INT_MASK_2,
+               .offs           = 1 << 6,
+       },
+       [PM8607_IRQ_GPADC3] = {
+               .reg            = PM8607_INT_STATUS2,
+               .mask_reg       = PM8607_INT_MASK_2,
+               .offs           = 1 << 7,
+       },
+       [PM8607_IRQ_AUDIO_SHORT] = {
+               .reg            = PM8607_INT_STATUS3,
+               .mask_reg       = PM8607_INT_MASK_3,
+               .offs           = 1 << 0,
+       },
+       [PM8607_IRQ_PEN] = {
+               .reg            = PM8607_INT_STATUS3,
+               .mask_reg       = PM8607_INT_MASK_3,
+               .offs           = 1 << 1,
+       },
+       [PM8607_IRQ_HEADSET] = {
+               .reg            = PM8607_INT_STATUS3,
+               .mask_reg       = PM8607_INT_MASK_3,
+               .offs           = 1 << 2,
+       },
+       [PM8607_IRQ_HOOK] = {
+               .reg            = PM8607_INT_STATUS3,
+               .mask_reg       = PM8607_INT_MASK_3,
+               .offs           = 1 << 3,
+       },
+       [PM8607_IRQ_MICIN] = {
+               .reg            = PM8607_INT_STATUS3,
+               .mask_reg       = PM8607_INT_MASK_3,
+               .offs           = 1 << 4,
+       },
+       [PM8607_IRQ_CHG_FAIL] = {
+               .reg            = PM8607_INT_STATUS3,
+               .mask_reg       = PM8607_INT_MASK_3,
+               .offs           = 1 << 5,
+       },
+       [PM8607_IRQ_CHG_DONE] = {
+               .reg            = PM8607_INT_STATUS3,
+               .mask_reg       = PM8607_INT_MASK_3,
+               .offs           = 1 << 6,
+       },
+       [PM8607_IRQ_CHG_FAULT] = {
+               .reg            = PM8607_INT_STATUS3,
+               .mask_reg       = PM8607_INT_MASK_3,
+               .offs           = 1 << 7,
+       },
+};
+
+static irqreturn_t pm860x_irq(int irq, void *data)
+{
+       struct pm860x_chip *chip = data;
+       struct pm860x_irq_data *irq_data;
+       struct i2c_client *i2c;
+       int read_reg = -1, value = 0;
+       int i;
+
+       i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
+       for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
+               irq_data = &pm860x_irqs[i];
+               if (read_reg != irq_data->reg) {
+                       read_reg = irq_data->reg;
+                       value = pm860x_reg_read(i2c, irq_data->reg);
+               }
+               if (value & irq_data->enable)
+                       handle_nested_irq(chip->irq_base + i);
+       }
+       return IRQ_HANDLED;
+}
+
+static void pm860x_irq_lock(struct irq_data *data)
+{
+       struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
+
+       mutex_lock(&chip->irq_lock);
+}
+
+static void pm860x_irq_sync_unlock(struct irq_data *data)
+{
+       struct pm860x_chip *chip = irq_data_get_irq_chip_data(data);
+       struct pm860x_irq_data *irq_data;
+       struct i2c_client *i2c;
+       static unsigned char cached[3] = {0x0, 0x0, 0x0};
+       unsigned char mask[3];
+       int i;
+
+       i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
+       /* Load cached value. In initial, all IRQs are masked */
+       for (i = 0; i < 3; i++)
+               mask[i] = cached[i];
+       for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) {
+               irq_data = &pm860x_irqs[i];
+               switch (irq_data->mask_reg) {
+               case PM8607_INT_MASK_1:
+                       mask[0] &= ~irq_data->offs;
+                       mask[0] |= irq_data->enable;
+                       break;
+               case PM8607_INT_MASK_2:
+                       mask[1] &= ~irq_data->offs;
+                       mask[1] |= irq_data->enable;
+                       break;
+               case PM8607_INT_MASK_3:
+                       mask[2] &= ~irq_data->offs;
+                       mask[2] |= irq_data->enable;
+                       break;
+               default:
+                       dev_err(chip->dev, "wrong IRQ\n");
+                       break;
+               }
+       }
+       /* update mask into registers */
+       for (i = 0; i < 3; i++) {
+               if (mask[i] != cached[i]) {
+                       cached[i] = mask[i];
+                       pm860x_reg_write(i2c, PM8607_INT_MASK_1 + i, mask[i]);
+               }
+       }
+
+       mutex_unlock(&chip->irq_lock);
+}
+
+static void pm860x_irq_enable(struct irq_data *data)
+{
+       pm860x_irqs[data->hwirq].enable = pm860x_irqs[data->hwirq].offs;
+}
+
+static void pm860x_irq_disable(struct irq_data *data)
+{
+       pm860x_irqs[data->hwirq].enable = 0;
+}
+
+static struct irq_chip pm860x_irq_chip = {
+       .name           = "88pm860x",
+       .irq_bus_lock   = pm860x_irq_lock,
+       .irq_bus_sync_unlock = pm860x_irq_sync_unlock,
+       .irq_enable     = pm860x_irq_enable,
+       .irq_disable    = pm860x_irq_disable,
+};
+
+static int pm860x_irq_domain_map(struct irq_domain *d, unsigned int virq,
+                                irq_hw_number_t hw)
+{
+       irq_set_chip_data(virq, d->host_data);
+       irq_set_chip_and_handler(virq, &pm860x_irq_chip, handle_edge_irq);
+       irq_set_nested_thread(virq, 1);
+#ifdef CONFIG_ARM
+       set_irq_flags(virq, IRQF_VALID);
+#else
+       irq_set_noprobe(virq);
+#endif
+       return 0;
+}
+
+static struct irq_domain_ops pm860x_irq_domain_ops = {
+       .map    = pm860x_irq_domain_map,
+       .xlate  = irq_domain_xlate_onetwocell,
+};
+
+static int device_irq_init(struct pm860x_chip *chip,
+                                    struct pm860x_platform_data *pdata)
+{
+       struct i2c_client *i2c = (chip->id == CHIP_PM8607) ?
+               chip->client : chip->companion;
+       unsigned char status_buf[INT_STATUS_NUM];
+       unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
+       int data, mask, ret = -EINVAL;
+       int nr_irqs, irq_base = -1;
+       struct device_node *node = i2c->dev.of_node;
+
+       mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR
+               | PM8607_B0_MISC1_INT_MASK;
+       data = 0;
+       chip->irq_mode = 0;
+       if (pdata && pdata->irq_mode) {
+               /*
+                * irq_mode defines the way of clearing interrupt. If it's 1,
+                * clear IRQ by write. Otherwise, clear it by read.
+                * This control bit is valid from 88PM8607 B0 steping.
+                */
+               data |= PM8607_B0_MISC1_INT_CLEAR;
+               chip->irq_mode = 1;
+       }
+       ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data);
+       if (ret < 0)
+               goto out;
+
+       /* mask all IRQs */
+       memset(status_buf, 0, INT_STATUS_NUM);
+       ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1,
+                               INT_STATUS_NUM, status_buf);
+       if (ret < 0)
+               goto out;
+
+       if (chip->irq_mode) {
+               /* clear interrupt status by write */
+               memset(status_buf, 0xFF, INT_STATUS_NUM);
+               ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1,
+                                       INT_STATUS_NUM, status_buf);
+       } else {
+               /* clear interrupt status by read */
+               ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1,
+                                       INT_STATUS_NUM, status_buf);
+       }
+       if (ret < 0)
+               goto out;
+
+       mutex_init(&chip->irq_lock);
+
+       if (pdata && pdata->irq_base)
+               irq_base = pdata->irq_base;
+       nr_irqs = ARRAY_SIZE(pm860x_irqs);
+       chip->irq_base = irq_alloc_descs(irq_base, 0, nr_irqs, 0);
+       if (chip->irq_base < 0) {
+               dev_err(&i2c->dev, "Failed to allocate interrupts, ret:%d\n",
+                       chip->irq_base);
+               ret = -EBUSY;
+               goto out;
+       }
+       irq_domain_add_legacy(node, nr_irqs, chip->irq_base, 0,
+                             &pm860x_irq_domain_ops, chip);
+       chip->core_irq = i2c->irq;
+       if (!chip->core_irq)
+               goto out;
+
+       ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq,
+                                  flags | IRQF_ONESHOT, "88pm860x", chip);
+       if (ret) {
+               dev_err(chip->dev, "Failed to request IRQ: %d\n", ret);
+               chip->core_irq = 0;
+       }
+
+       return 0;
+out:
+       chip->core_irq = 0;
+       return ret;
+}
+
+static void device_irq_exit(struct pm860x_chip *chip)
+{
+       if (chip->core_irq)
+               free_irq(chip->core_irq, chip);
+}
+
+int pm8606_osc_enable(struct pm860x_chip *chip, unsigned short client)
+{
+       int ret = -EIO;
+       struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
+               chip->client : chip->companion;
+
+       dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
+       dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
+                       __func__, chip->osc_vote,
+                       chip->osc_status);
+
+       mutex_lock(&chip->osc_lock);
+       /* Update voting status */
+       chip->osc_vote |= client;
+       /* If reference group is off - turn on*/
+       if (chip->osc_status != PM8606_REF_GP_OSC_ON) {
+               chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
+               /* Enable Reference group Vsys */
+               if (pm860x_set_bits(i2c, PM8606_VSYS,
+                               PM8606_VSYS_EN, PM8606_VSYS_EN))
+                       goto out;
+
+               /*Enable Internal Oscillator */
+               if (pm860x_set_bits(i2c, PM8606_MISC,
+                               PM8606_MISC_OSC_EN, PM8606_MISC_OSC_EN))
+                       goto out;
+               /* Update status (only if writes succeed) */
+               chip->osc_status = PM8606_REF_GP_OSC_ON;
+       }
+       mutex_unlock(&chip->osc_lock);
+
+       dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
+                       __func__, chip->osc_vote,
+                       chip->osc_status, ret);
+       return 0;
+out:
+       mutex_unlock(&chip->osc_lock);
+       return ret;
+}
+EXPORT_SYMBOL(pm8606_osc_enable);
+
+int pm8606_osc_disable(struct pm860x_chip *chip, unsigned short client)
+{
+       int ret = -EIO;
+       struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
+               chip->client : chip->companion;
+
+       dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
+       dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
+                       __func__, chip->osc_vote,
+                       chip->osc_status);
+
+       mutex_lock(&chip->osc_lock);
+       /*Update voting status */
+       chip->osc_vote &= ~(client);
+       /* If reference group is off and this is the last client to release
+        * - turn off */
+       if ((chip->osc_status != PM8606_REF_GP_OSC_OFF) &&
+                       (chip->osc_vote == REF_GP_NO_CLIENTS)) {
+               chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
+               /* Disable Reference group Vsys */
+               if (pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0))
+                       goto out;
+               /* Disable Internal Oscillator */
+               if (pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0))
+                       goto out;
+               chip->osc_status = PM8606_REF_GP_OSC_OFF;
+       }
+       mutex_unlock(&chip->osc_lock);
+
+       dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
+                       __func__, chip->osc_vote,
+                       chip->osc_status, ret);
+       return 0;
+out:
+       mutex_unlock(&chip->osc_lock);
+       return ret;
+}
+EXPORT_SYMBOL(pm8606_osc_disable);
+
+static void device_osc_init(struct i2c_client *i2c)
+{
+       struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+
+       mutex_init(&chip->osc_lock);
+       /* init portofino reference group voting and status */
+       /* Disable Reference group Vsys */
+       pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0);
+       /* Disable Internal Oscillator */
+       pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0);
+
+       chip->osc_vote = REF_GP_NO_CLIENTS;
+       chip->osc_status = PM8606_REF_GP_OSC_OFF;
+}
+
+static void device_bk_init(struct pm860x_chip *chip,
+                                    struct pm860x_platform_data *pdata)
+{
+       int ret, i;
+
+       if (pdata && pdata->backlight) {
+               if (pdata->num_backlights > ARRAY_SIZE(bk_devs))
+                       pdata->num_backlights = ARRAY_SIZE(bk_devs);
+               for (i = 0; i < pdata->num_backlights; i++) {
+                       bk_devs[i].platform_data = &pdata->backlight[i];
+                       bk_devs[i].pdata_size =
+                               sizeof(struct pm860x_backlight_pdata);
+               }
+       }
+       ret = mfd_add_devices(chip->dev, 0, bk_devs,
+                             ARRAY_SIZE(bk_devs), NULL, 0, NULL);
+       if (ret < 0)
+               dev_err(chip->dev, "Failed to add backlight subdev\n");
+}
+
+static void device_led_init(struct pm860x_chip *chip,
+                                     struct pm860x_platform_data *pdata)
+{
+       int ret, i;
+
+       if (pdata && pdata->led) {
+               if (pdata->num_leds > ARRAY_SIZE(led_devs))
+                       pdata->num_leds = ARRAY_SIZE(led_devs);
+               for (i = 0; i < pdata->num_leds; i++) {
+                       led_devs[i].platform_data = &pdata->led[i];
+                       led_devs[i].pdata_size =
+                               sizeof(struct pm860x_led_pdata);
+               }
+       }
+       ret = mfd_add_devices(chip->dev, 0, led_devs,
+                             ARRAY_SIZE(led_devs), NULL, 0, NULL);
+       if (ret < 0) {
+               dev_err(chip->dev, "Failed to add led subdev\n");
+               return;
+       }
+}
+
+static void device_regulator_init(struct pm860x_chip *chip,
+                                           struct pm860x_platform_data *pdata)
+{
+       int ret;
+
+       if (pdata == NULL)
+               return;
+       if (pdata->buck1) {
+               reg_devs[0].platform_data = pdata->buck1;
+               reg_devs[0].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->buck2) {
+               reg_devs[1].platform_data = pdata->buck2;
+               reg_devs[1].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->buck3) {
+               reg_devs[2].platform_data = pdata->buck3;
+               reg_devs[2].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo1) {
+               reg_devs[3].platform_data = pdata->ldo1;
+               reg_devs[3].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo2) {
+               reg_devs[4].platform_data = pdata->ldo2;
+               reg_devs[4].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo3) {
+               reg_devs[5].platform_data = pdata->ldo3;
+               reg_devs[5].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo4) {
+               reg_devs[6].platform_data = pdata->ldo4;
+               reg_devs[6].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo5) {
+               reg_devs[7].platform_data = pdata->ldo5;
+               reg_devs[7].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo6) {
+               reg_devs[8].platform_data = pdata->ldo6;
+               reg_devs[8].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo7) {
+               reg_devs[9].platform_data = pdata->ldo7;
+               reg_devs[9].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo8) {
+               reg_devs[10].platform_data = pdata->ldo8;
+               reg_devs[10].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo9) {
+               reg_devs[11].platform_data = pdata->ldo9;
+               reg_devs[11].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo10) {
+               reg_devs[12].platform_data = pdata->ldo10;
+               reg_devs[12].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo12) {
+               reg_devs[13].platform_data = pdata->ldo12;
+               reg_devs[13].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo_vibrator) {
+               reg_devs[14].platform_data = pdata->ldo_vibrator;
+               reg_devs[14].pdata_size = sizeof(struct regulator_init_data);
+       }
+       if (pdata->ldo14) {
+               reg_devs[15].platform_data = pdata->ldo14;
+               reg_devs[15].pdata_size = sizeof(struct regulator_init_data);
+       }
+       ret = mfd_add_devices(chip->dev, 0, reg_devs,
+                             ARRAY_SIZE(reg_devs), NULL, 0, NULL);
+       if (ret < 0) {
+               dev_err(chip->dev, "Failed to add regulator subdev\n");
+               return;
+       }
+}
+
+static void device_rtc_init(struct pm860x_chip *chip,
+                                     struct pm860x_platform_data *pdata)
+{
+       int ret;
+
+       if (!pdata)
+               return;
+
+       rtc_devs[0].platform_data = pdata->rtc;
+       rtc_devs[0].pdata_size = sizeof(struct pm860x_rtc_pdata);
+       rtc_devs[0].num_resources = ARRAY_SIZE(rtc_resources);
+       rtc_devs[0].resources = &rtc_resources[0];
+       ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
+                             ARRAY_SIZE(rtc_devs), &rtc_resources[0],
+                             chip->irq_base, NULL);
+       if (ret < 0)
+               dev_err(chip->dev, "Failed to add rtc subdev\n");
+}
+
+static void device_touch_init(struct pm860x_chip *chip,
+                                       struct pm860x_platform_data *pdata)
+{
+       int ret;
+
+       if (pdata == NULL)
+               return;
+
+       touch_devs[0].platform_data = pdata->touch;
+       touch_devs[0].pdata_size = sizeof(struct pm860x_touch_pdata);
+       touch_devs[0].num_resources = ARRAY_SIZE(touch_resources);
+       touch_devs[0].resources = &touch_resources[0];
+       ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
+                             ARRAY_SIZE(touch_devs), &touch_resources[0],
+                             chip->irq_base, NULL);
+       if (ret < 0)
+               dev_err(chip->dev, "Failed to add touch subdev\n");
+}
+
+static void device_power_init(struct pm860x_chip *chip,
+                                       struct pm860x_platform_data *pdata)
+{
+       int ret;
+
+       if (pdata == NULL)
+               return;
+
+       power_devs[0].platform_data = pdata->power;
+       power_devs[0].pdata_size = sizeof(struct pm860x_power_pdata);
+       power_devs[0].num_resources = ARRAY_SIZE(battery_resources);
+       power_devs[0].resources = &battery_resources[0],
+       ret = mfd_add_devices(chip->dev, 0, &power_devs[0], 1,
+                             &battery_resources[0], chip->irq_base, NULL);
+       if (ret < 0)
+               dev_err(chip->dev, "Failed to add battery subdev\n");
+
+       power_devs[1].platform_data = pdata->power;
+       power_devs[1].pdata_size = sizeof(struct pm860x_power_pdata);
+       power_devs[1].num_resources = ARRAY_SIZE(charger_resources);
+       power_devs[1].resources = &charger_resources[0],
+       ret = mfd_add_devices(chip->dev, 0, &power_devs[1], 1,
+                             &charger_resources[0], chip->irq_base, NULL);
+       if (ret < 0)
+               dev_err(chip->dev, "Failed to add charger subdev\n");
+
+       power_devs[2].platform_data = &preg_init_data;
+       power_devs[2].pdata_size = sizeof(struct regulator_init_data);
+       ret = mfd_add_devices(chip->dev, 0, &power_devs[2], 1,
+                             NULL, chip->irq_base, NULL);
+       if (ret < 0)
+               dev_err(chip->dev, "Failed to add preg subdev\n");
+
+       if (pdata->chg_desc) {
+               pdata->chg_desc->charger_regulators =
+                       &chg_desc_regulator_data[0];
+               pdata->chg_desc->num_charger_regulators =
+                       ARRAY_SIZE(chg_desc_regulator_data),
+               power_devs[3].platform_data = pdata->chg_desc;
+               power_devs[3].pdata_size = sizeof(*pdata->chg_desc);
+               ret = mfd_add_devices(chip->dev, 0, &power_devs[3], 1,
+                                     NULL, chip->irq_base, NULL);
+               if (ret < 0)
+                       dev_err(chip->dev, "Failed to add chg-manager subdev\n");
+       }
+}
+
+static void device_onkey_init(struct pm860x_chip *chip,
+                                       struct pm860x_platform_data *pdata)
+{
+       int ret;
+
+       onkey_devs[0].num_resources = ARRAY_SIZE(onkey_resources);
+       onkey_devs[0].resources = &onkey_resources[0],
+       ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
+                             ARRAY_SIZE(onkey_devs), &onkey_resources[0],
+                             chip->irq_base, NULL);
+       if (ret < 0)
+               dev_err(chip->dev, "Failed to add onkey subdev\n");
+}
+
+static void device_codec_init(struct pm860x_chip *chip,
+                                       struct pm860x_platform_data *pdata)
+{
+       int ret;
+
+       codec_devs[0].num_resources = ARRAY_SIZE(codec_resources);
+       codec_devs[0].resources = &codec_resources[0],
+       ret = mfd_add_devices(chip->dev, 0, &codec_devs[0],
+                             ARRAY_SIZE(codec_devs), &codec_resources[0], 0,
+                             NULL);
+       if (ret < 0)
+               dev_err(chip->dev, "Failed to add codec subdev\n");
+}
+
+static void device_8607_init(struct pm860x_chip *chip,
+                                      struct i2c_client *i2c,
+                                      struct pm860x_platform_data *pdata)
+{
+       int data, ret;
+
+       ret = pm860x_reg_read(i2c, PM8607_CHIP_ID);
+       if (ret < 0) {
+               dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret);
+               goto out;
+       }
+       switch (ret & PM8607_VERSION_MASK) {
+       case 0x40:
+       case 0x50:
+               dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n",
+                        ret);
+               break;
+       default:
+               dev_err(chip->dev,
+                       "Failed to detect Marvell 88PM8607. Chip ID: %02x\n",
+                       ret);
+               goto out;
+       }
+
+       ret = pm860x_reg_read(i2c, 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 = pm860x_reg_read(i2c, PM8607_B0_MISC1);
+       if (ret < 0) {
+               dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret);
+               goto out;
+       }
+
+       if (pdata && (pdata->i2c_port == PI2C_PORT))
+               data = PM8607_B0_MISC1_PI2C;
+       else
+               data = 0;
+       ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data);
+       if (ret < 0) {
+               dev_err(chip->dev, "Failed to access MISC1:%d\n", ret);
+               goto out;
+       }
+
+       ret = device_irq_init(chip, pdata);
+       if (ret < 0)
+               goto out;
+
+       device_regulator_init(chip, pdata);
+       device_rtc_init(chip, pdata);
+       device_onkey_init(chip, pdata);
+       device_touch_init(chip, pdata);
+       device_power_init(chip, pdata);
+       device_codec_init(chip, pdata);
+out:
+       return;
+}
+
+static void device_8606_init(struct pm860x_chip *chip,
+                                      struct i2c_client *i2c,
+                                      struct pm860x_platform_data *pdata)
+{
+       device_osc_init(i2c);
+       device_bk_init(chip, pdata);
+       device_led_init(chip, pdata);
+}
+
+static int pm860x_device_init(struct pm860x_chip *chip,
+                                       struct pm860x_platform_data *pdata)
+{
+       chip->core_irq = 0;
+
+       switch (chip->id) {
+       case CHIP_PM8606:
+               device_8606_init(chip, chip->client, pdata);
+               break;
+       case CHIP_PM8607:
+               device_8607_init(chip, chip->client, pdata);
+               break;
+       }
+
+       if (chip->companion) {
+               switch (chip->id) {
+               case CHIP_PM8607:
+                       device_8606_init(chip, chip->companion, pdata);
+                       break;
+               case CHIP_PM8606:
+                       device_8607_init(chip, chip->companion, pdata);
+                       break;
+               }
+       }
+
+       return 0;
+}
+
+static void pm860x_device_exit(struct pm860x_chip *chip)
+{
+       device_irq_exit(chip);
+       mfd_remove_devices(chip->dev);
+}
+
+static int verify_addr(struct i2c_client *i2c)
+{
+       unsigned short addr_8607[] = {0x30, 0x34};
+       unsigned short addr_8606[] = {0x10, 0x11};
+       int size, i;
+
+       if (i2c == NULL)
+               return 0;
+       size = ARRAY_SIZE(addr_8606);
+       for (i = 0; i < size; i++) {
+               if (i2c->addr == *(addr_8606 + i))
+                       return CHIP_PM8606;
+       }
+       size = ARRAY_SIZE(addr_8607);
+       for (i = 0; i < size; i++) {
+               if (i2c->addr == *(addr_8607 + i))
+                       return CHIP_PM8607;
+       }
+       return 0;
+}
+
+static const struct regmap_config pm860x_regmap_config = {
+       .reg_bits = 8,
+       .val_bits = 8,
+};
+
+static int pm860x_dt_init(struct device_node *np,
+                                   struct device *dev,
+                                   struct pm860x_platform_data *pdata)
+{
+       int ret;
+
+       if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
+               pdata->irq_mode = 1;
+       ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
+                                  &pdata->companion_addr);
+       if (ret) {
+               dev_err(dev,
+                       "Not found \"marvell,88pm860x-slave-addr\" property\n");
+               pdata->companion_addr = 0;
+       }
+       return 0;
+}
+
+static int pm860x_probe(struct i2c_client *client,
+                                 const struct i2c_device_id *id)
+{
+       struct pm860x_platform_data *pdata = dev_get_platdata(&client->dev);
+       struct device_node *node = client->dev.of_node;
+       struct pm860x_chip *chip;
+       int ret;
+
+       if (node && !pdata) {
+               /* parse DT to get platform data */
+               pdata = devm_kzalloc(&client->dev,
+                                    sizeof(struct pm860x_platform_data),
+                                    GFP_KERNEL);
+               if (!pdata)
+                       return -ENOMEM;
+               ret = pm860x_dt_init(node, &client->dev, pdata);
+               if (ret)
+                       return ret;
+       } else if (!pdata) {
+               pr_info("No platform data in %s!\n", __func__);
+               return -EINVAL;
+       }
+
+       chip = devm_kzalloc(&client->dev,
+                           sizeof(struct pm860x_chip), GFP_KERNEL);
+       if (chip == NULL)
+               return -ENOMEM;
+
+       chip->id = verify_addr(client);
+       chip->regmap = devm_regmap_init_i2c(client, &pm860x_regmap_config);
+       if (IS_ERR(chip->regmap)) {
+               ret = PTR_ERR(chip->regmap);
+               dev_err(&client->dev, "Failed to allocate register map: %d\n",
+                               ret);
+               return ret;
+       }
+       chip->client = client;
+       i2c_set_clientdata(client, chip);
+       chip->dev = &client->dev;
+       dev_set_drvdata(chip->dev, chip);
+
+       /*
+        * Both client and companion client shares same platform driver.
+        * Driver distinguishes them by pdata->companion_addr.
+        * pdata->companion_addr is only assigned if companion chip exists.
+        * At the same time, the companion_addr shouldn't equal to client
+        * address.
+        */
+       if (pdata->companion_addr && (pdata->companion_addr != client->addr)) {
+               chip->companion_addr = pdata->companion_addr;
+               chip->companion = i2c_new_dummy(chip->client->adapter,
+                                               chip->companion_addr);
+               if (!chip->companion) {
+                       dev_err(&client->dev,
+                               "Failed to allocate I2C companion device\n");
+                       return -ENODEV;
+               }
+               chip->regmap_companion = regmap_init_i2c(chip->companion,
+                                                       &pm860x_regmap_config);
+               if (IS_ERR(chip->regmap_companion)) {
+                       ret = PTR_ERR(chip->regmap_companion);
+                       dev_err(&chip->companion->dev,
+                               "Failed to allocate register map: %d\n", ret);
+                       i2c_unregister_device(chip->companion);
+                       return ret;
+               }
+               i2c_set_clientdata(chip->companion, chip);
+       }
+
+       pm860x_device_init(chip, pdata);
+       return 0;
+}
+
+static int pm860x_remove(struct i2c_client *client)
+{
+       struct pm860x_chip *chip = i2c_get_clientdata(client);
+
+       pm860x_device_exit(chip);
+       if (chip->companion) {
+               regmap_exit(chip->regmap_companion);
+               i2c_unregister_device(chip->companion);
+       }
+       return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int pm860x_suspend(struct device *dev)
+{
+       struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+       struct pm860x_chip *chip = i2c_get_clientdata(client);
+
+       if (device_may_wakeup(dev) && chip->wakeup_flag)
+               enable_irq_wake(chip->core_irq);
+       return 0;
+}
+
+static int pm860x_resume(struct device *dev)
+{
+       struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+       struct pm860x_chip *chip = i2c_get_clientdata(client);
+
+       if (device_may_wakeup(dev) && chip->wakeup_flag)
+               disable_irq_wake(chip->core_irq);
+       return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
+
+static const struct i2c_device_id pm860x_id_table[] = {
+       { "88PM860x", 0 },
+       {}
+};
+MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
+
+static const struct of_device_id pm860x_dt_ids[] = {
+       { .compatible = "marvell,88pm860x", },
+       {},
+};
+MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
+
+static struct i2c_driver pm860x_driver = {
+       .driver = {
+               .name   = "88PM860x",
+               .owner  = THIS_MODULE,
+               .pm     = &pm860x_pm_ops,
+               .of_match_table = pm860x_dt_ids,
+       },
+       .probe          = pm860x_probe,
+       .remove         = pm860x_remove,
+       .id_table       = pm860x_id_table,
+};
+
+static int __init pm860x_i2c_init(void)
+{
+       int ret;
+       ret = i2c_add_driver(&pm860x_driver);
+       if (ret != 0)
+               pr_err("Failed to register 88PM860x I2C driver: %d\n", ret);
+       return ret;
+}
+subsys_initcall(pm860x_i2c_init);
+
+static void __exit pm860x_i2c_exit(void)
+{
+       i2c_del_driver(&pm860x_driver);
+}
+module_exit(pm860x_i2c_exit);
+
+MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
+MODULE_LICENSE("GPL");