mfd: Add support for RICOH PMIC RC5T583
Laxman Dewangan [Tue, 28 Feb 2012 13:05:17 +0000 (18:05 +0530)]
Ricoh power management IC  RC5T583 contains is multi
functional device having multiple sub devices inside this.
This device has multiple dcdc/ldo regulators, gpios, interrupt
controllers, on-key, RTCs, ADCs.
This device have 4 DCDCs, 8 LDOs, 8 GPIOs, 6 ADCs, 3 RTCs etc.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

Cherry-picked from mainline
1b1247dd75aa5cf5fae54a3bec7280046e9c7957

Change-Id: I5d3bcfb45e232a1a9a210ec14815356ae1918c5d
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/91798
Reviewed-by: Automatic_Commit_Validation_User

drivers/mfd/Kconfig
drivers/mfd/Makefile
drivers/mfd/rc5t583-irq.c [new file with mode: 0644]
drivers/mfd/rc5t583.c [new file with mode: 0644]
include/linux/mfd/rc5t583.h [new file with mode: 0644]

index 2b04e4f..d0d8132 100644 (file)
@@ -817,6 +817,20 @@ config MFD_TPS65090
          additional drivers must be enabled in order to use the
          functionality of the device.
 
+config MFD_RC5T583
+       bool "Ricoh RC5T583 Power Management system device"
+       depends on I2C && GENERIC_HARDIRQS
+       select MFD_CORE
+       select REGMAP_I2C
+       help
+         Select this option to get support for the RICOH583 Power
+         Management system device.
+         This driver provides common support for accessing the device
+         through i2c interface. The device supports multiple sub-devices
+         like GPIO, interrupts, RTC, LDO and DCDC regulators, onkey.
+         Additional drivers must be enabled in order to use the
+         different functionality of the device.
+
 config MFD_AAT2870_CORE
        bool "Support for the AnalogicTech AAT2870"
        select MFD_CORE
index 6abb3f3..90f02cd 100644 (file)
@@ -110,3 +110,4 @@ obj-$(CONFIG_MFD_MAX8907C)  += max8907c.o
 obj-$(CONFIG_MFD_MAX8907C)     += max8907c-irq.o
 obj-$(CONFIG_MFD_MAX77663)     += max77663-core.o
 obj-$(CONFIG_MFD_RICOH583)     += ricoh583.o
+obj-$(CONFIG_MFD_RC5T583)      += rc5t583.o rc5t583-irq.o
diff --git a/drivers/mfd/rc5t583-irq.c b/drivers/mfd/rc5t583-irq.c
new file mode 100644 (file)
index 0000000..fa6f80f
--- /dev/null
@@ -0,0 +1,408 @@
+/*
+ * Interrupt driver for RICOH583 power management chip.
+ *
+ * Copyright (c) 2011-2012, NVIDIA CORPORATION.  All rights reserved.
+ * Author: Laxman dewangan <ldewangan@nvidia.com>
+ *
+ * based on code
+ *      Copyright (C) 2011 RICOH COMPANY,LTD
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/mfd/rc5t583.h>
+
+enum int_type {
+       SYS_INT  = 0x1,
+       DCDC_INT = 0x2,
+       RTC_INT  = 0x4,
+       ADC_INT  = 0x8,
+       GPIO_INT = 0x10,
+};
+
+static int gpedge_add[] = {
+       RC5T583_GPIO_GPEDGE2,
+       RC5T583_GPIO_GPEDGE2
+};
+
+static int irq_en_add[] = {
+       RC5T583_INT_EN_SYS1,
+       RC5T583_INT_EN_SYS2,
+       RC5T583_INT_EN_DCDC,
+       RC5T583_INT_EN_RTC,
+       RC5T583_INT_EN_ADC1,
+       RC5T583_INT_EN_ADC2,
+       RC5T583_INT_EN_ADC3,
+       RC5T583_GPIO_EN_INT
+};
+
+static int irq_mon_add[] = {
+       RC5T583_INT_MON_SYS1,
+       RC5T583_INT_MON_SYS2,
+       RC5T583_INT_MON_DCDC,
+       RC5T583_INT_MON_RTC,
+       RC5T583_INT_IR_ADCL,
+       RC5T583_INT_IR_ADCH,
+       RC5T583_INT_IR_ADCEND,
+       RC5T583_INT_IR_GPIOF,
+       RC5T583_INT_IR_GPIOR
+};
+
+static int irq_clr_add[] = {
+       RC5T583_INT_IR_SYS1,
+       RC5T583_INT_IR_SYS2,
+       RC5T583_INT_IR_DCDC,
+       RC5T583_INT_IR_RTC,
+       RC5T583_INT_IR_ADCL,
+       RC5T583_INT_IR_ADCH,
+       RC5T583_INT_IR_ADCEND,
+       RC5T583_INT_IR_GPIOF,
+       RC5T583_INT_IR_GPIOR
+};
+
+static int main_int_type[] = {
+       SYS_INT,
+       SYS_INT,
+       DCDC_INT,
+       RTC_INT,
+       ADC_INT,
+       ADC_INT,
+       ADC_INT,
+       GPIO_INT,
+       GPIO_INT,
+};
+
+struct rc5t583_irq_data {
+       u8      int_type;
+       u8      master_bit;
+       u8      int_en_bit;
+       u8      mask_reg_index;
+       int     grp_index;
+};
+
+#define RC5T583_IRQ(_int_type, _master_bit, _grp_index, \
+                       _int_bit, _mask_ind)            \
+       {                                               \
+               .int_type       = _int_type,            \
+               .master_bit     = _master_bit,          \
+               .grp_index      = _grp_index,           \
+               .int_en_bit     = _int_bit,             \
+               .mask_reg_index = _mask_ind,            \
+       }
+
+static const struct rc5t583_irq_data rc5t583_irqs[RC5T583_MAX_IRQS] = {
+       [RC5T583_IRQ_ONKEY]             = RC5T583_IRQ(SYS_INT,  0, 0, 0, 0),
+       [RC5T583_IRQ_ACOK]              = RC5T583_IRQ(SYS_INT,  0, 1, 1, 0),
+       [RC5T583_IRQ_LIDOPEN]           = RC5T583_IRQ(SYS_INT,  0, 2, 2, 0),
+       [RC5T583_IRQ_PREOT]             = RC5T583_IRQ(SYS_INT,  0, 3, 3, 0),
+       [RC5T583_IRQ_CLKSTP]            = RC5T583_IRQ(SYS_INT,  0, 4, 4, 0),
+       [RC5T583_IRQ_ONKEY_OFF]         = RC5T583_IRQ(SYS_INT,  0, 5, 5, 0),
+       [RC5T583_IRQ_WD]                = RC5T583_IRQ(SYS_INT,  0, 7, 7, 0),
+       [RC5T583_IRQ_EN_PWRREQ1]        = RC5T583_IRQ(SYS_INT,  0, 8, 0, 1),
+       [RC5T583_IRQ_EN_PWRREQ2]        = RC5T583_IRQ(SYS_INT,  0, 9, 1, 1),
+       [RC5T583_IRQ_PRE_VINDET]        = RC5T583_IRQ(SYS_INT,  0, 10, 2, 1),
+
+       [RC5T583_IRQ_DC0LIM]            = RC5T583_IRQ(DCDC_INT, 1, 0, 0, 2),
+       [RC5T583_IRQ_DC1LIM]            = RC5T583_IRQ(DCDC_INT, 1, 1, 1, 2),
+       [RC5T583_IRQ_DC2LIM]            = RC5T583_IRQ(DCDC_INT, 1, 2, 2, 2),
+       [RC5T583_IRQ_DC3LIM]            = RC5T583_IRQ(DCDC_INT, 1, 3, 3, 2),
+
+       [RC5T583_IRQ_CTC]               = RC5T583_IRQ(RTC_INT,  2, 0, 0, 3),
+       [RC5T583_IRQ_YALE]              = RC5T583_IRQ(RTC_INT,  2, 5, 5, 3),
+       [RC5T583_IRQ_DALE]              = RC5T583_IRQ(RTC_INT,  2, 6, 6, 3),
+       [RC5T583_IRQ_WALE]              = RC5T583_IRQ(RTC_INT,  2, 7, 7, 3),
+
+       [RC5T583_IRQ_AIN1L]             = RC5T583_IRQ(ADC_INT,  3, 0, 0, 4),
+       [RC5T583_IRQ_AIN2L]             = RC5T583_IRQ(ADC_INT,  3, 1, 1, 4),
+       [RC5T583_IRQ_AIN3L]             = RC5T583_IRQ(ADC_INT,  3, 2, 2, 4),
+       [RC5T583_IRQ_VBATL]             = RC5T583_IRQ(ADC_INT,  3, 3, 3, 4),
+       [RC5T583_IRQ_VIN3L]             = RC5T583_IRQ(ADC_INT,  3, 4, 4, 4),
+       [RC5T583_IRQ_VIN8L]             = RC5T583_IRQ(ADC_INT,  3, 5, 5, 4),
+       [RC5T583_IRQ_AIN1H]             = RC5T583_IRQ(ADC_INT,  3, 6, 0, 5),
+       [RC5T583_IRQ_AIN2H]             = RC5T583_IRQ(ADC_INT,  3, 7, 1, 5),
+       [RC5T583_IRQ_AIN3H]             = RC5T583_IRQ(ADC_INT,  3, 8, 2, 5),
+       [RC5T583_IRQ_VBATH]             = RC5T583_IRQ(ADC_INT,  3, 9, 3, 5),
+       [RC5T583_IRQ_VIN3H]             = RC5T583_IRQ(ADC_INT,  3, 10, 4, 5),
+       [RC5T583_IRQ_VIN8H]             = RC5T583_IRQ(ADC_INT,  3, 11, 5, 5),
+       [RC5T583_IRQ_ADCEND]            = RC5T583_IRQ(ADC_INT,  3, 12, 0, 6),
+
+       [RC5T583_IRQ_GPIO0]             = RC5T583_IRQ(GPIO_INT, 4, 0, 0, 7),
+       [RC5T583_IRQ_GPIO1]             = RC5T583_IRQ(GPIO_INT, 4, 1, 1, 7),
+       [RC5T583_IRQ_GPIO2]             = RC5T583_IRQ(GPIO_INT, 4, 2, 2, 7),
+       [RC5T583_IRQ_GPIO3]             = RC5T583_IRQ(GPIO_INT, 4, 3, 3, 7),
+       [RC5T583_IRQ_GPIO4]             = RC5T583_IRQ(GPIO_INT, 4, 4, 4, 7),
+       [RC5T583_IRQ_GPIO5]             = RC5T583_IRQ(GPIO_INT, 4, 5, 5, 7),
+       [RC5T583_IRQ_GPIO6]             = RC5T583_IRQ(GPIO_INT, 4, 6, 6, 7),
+       [RC5T583_IRQ_GPIO7]             = RC5T583_IRQ(GPIO_INT, 4, 7, 7, 7),
+};
+
+static void rc5t583_irq_lock(struct irq_data *irq_data)
+{
+       struct rc5t583 *rc5t583 = irq_data_get_irq_chip_data(irq_data);
+       mutex_lock(&rc5t583->irq_lock);
+}
+
+static void rc5t583_irq_unmask(struct irq_data *irq_data)
+{
+       struct rc5t583 *rc5t583 = irq_data_get_irq_chip_data(irq_data);
+       unsigned int __irq = irq_data->irq - rc5t583->irq_base;
+       const struct rc5t583_irq_data *data = &rc5t583_irqs[__irq];
+
+       rc5t583->group_irq_en[data->grp_index] |= 1 << data->grp_index;
+       rc5t583->intc_inten_reg |= 1 << data->master_bit;
+       rc5t583->irq_en_reg[data->mask_reg_index] |= 1 << data->int_en_bit;
+}
+
+static void rc5t583_irq_mask(struct irq_data *irq_data)
+{
+       struct rc5t583 *rc5t583 = irq_data_get_irq_chip_data(irq_data);
+       unsigned int __irq = irq_data->irq - rc5t583->irq_base;
+       const struct rc5t583_irq_data *data = &rc5t583_irqs[__irq];
+
+       rc5t583->group_irq_en[data->grp_index] &= ~(1 << data->grp_index);
+       if (!rc5t583->group_irq_en[data->grp_index])
+               rc5t583->intc_inten_reg &= ~(1 << data->master_bit);
+
+       rc5t583->irq_en_reg[data->mask_reg_index] &= ~(1 << data->int_en_bit);
+}
+
+static int rc5t583_irq_set_type(struct irq_data *irq_data, unsigned int type)
+{
+       struct rc5t583 *rc5t583 = irq_data_get_irq_chip_data(irq_data);
+       unsigned int __irq = irq_data->irq - rc5t583->irq_base;
+       const struct rc5t583_irq_data *data = &rc5t583_irqs[__irq];
+       int val = 0;
+       int gpedge_index;
+       int gpedge_bit_pos;
+
+       /* Supporting only trigger level inetrrupt */
+       if ((data->int_type & GPIO_INT) && (type & IRQ_TYPE_EDGE_BOTH)) {
+               gpedge_index = data->int_en_bit / 4;
+               gpedge_bit_pos = data->int_en_bit % 4;
+
+               if (type & IRQ_TYPE_EDGE_FALLING)
+                       val |= 0x2;
+
+               if (type & IRQ_TYPE_EDGE_RISING)
+                       val |= 0x1;
+
+               rc5t583->gpedge_reg[gpedge_index] &= ~(3 << gpedge_bit_pos);
+               rc5t583->gpedge_reg[gpedge_index] |= (val << gpedge_bit_pos);
+               rc5t583_irq_unmask(irq_data);
+               return 0;
+       }
+       return -EINVAL;
+}
+
+static void rc5t583_irq_sync_unlock(struct irq_data *irq_data)
+{
+       struct rc5t583 *rc5t583 = irq_data_get_irq_chip_data(irq_data);
+       int i;
+       int ret;
+
+       for (i = 0; i < ARRAY_SIZE(rc5t583->gpedge_reg); i++) {
+               ret = rc5t583_write(rc5t583->dev, gpedge_add[i],
+                               rc5t583->gpedge_reg[i]);
+               if (ret < 0)
+                       dev_warn(rc5t583->dev,
+                               "Error in writing reg 0x%02x error: %d\n",
+                               gpedge_add[i], ret);
+       }
+
+       for (i = 0; i < ARRAY_SIZE(rc5t583->irq_en_reg); i++) {
+               ret = rc5t583_write(rc5t583->dev, irq_en_add[i],
+                                       rc5t583->irq_en_reg[i]);
+               if (ret < 0)
+                       dev_warn(rc5t583->dev,
+                               "Error in writing reg 0x%02x error: %d\n",
+                               irq_en_add[i], ret);
+       }
+
+       ret = rc5t583_write(rc5t583->dev, RC5T583_INTC_INTEN,
+                               rc5t583->intc_inten_reg);
+       if (ret < 0)
+               dev_warn(rc5t583->dev,
+                       "Error in writing reg 0x%02x error: %d\n",
+                       RC5T583_INTC_INTEN, ret);
+
+       mutex_unlock(&rc5t583->irq_lock);
+}
+#ifdef CONFIG_PM_SLEEP
+static int rc5t583_irq_set_wake(struct irq_data *irq_data, unsigned int on)
+{
+       struct rc5t583 *rc5t583 = irq_data_get_irq_chip_data(irq_data);
+       return irq_set_irq_wake(rc5t583->chip_irq, on);
+}
+#else
+#define rc5t583_irq_set_wake NULL
+#endif
+
+static irqreturn_t rc5t583_irq(int irq, void *data)
+{
+       struct rc5t583 *rc5t583 = data;
+       uint8_t int_sts[RC5T583_MAX_INTERRUPT_MASK_REGS];
+       uint8_t master_int;
+       int i;
+       int ret;
+       unsigned int rtc_int_sts = 0;
+
+       /* Clear the status */
+       for (i = 0; i < RC5T583_MAX_INTERRUPT_MASK_REGS; i++)
+               int_sts[i] = 0;
+
+       ret  = rc5t583_read(rc5t583->dev, RC5T583_INTC_INTMON, &master_int);
+       if (ret < 0) {
+               dev_err(rc5t583->dev,
+                       "Error in reading reg 0x%02x error: %d\n",
+                       RC5T583_INTC_INTMON, ret);
+               return IRQ_HANDLED;
+       }
+
+       for (i = 0; i < RC5T583_MAX_INTERRUPT_MASK_REGS; ++i) {
+               if (!(master_int & main_int_type[i]))
+                       continue;
+
+               ret = rc5t583_read(rc5t583->dev, irq_mon_add[i], &int_sts[i]);
+               if (ret < 0) {
+                       dev_warn(rc5t583->dev,
+                               "Error in reading reg 0x%02x error: %d\n",
+                               irq_mon_add[i], ret);
+                       int_sts[i] = 0;
+                       continue;
+               }
+
+               if (main_int_type[i] & RTC_INT) {
+                       rtc_int_sts = 0;
+                       if (int_sts[i] & 0x1)
+                               rtc_int_sts |= BIT(6);
+                       if (int_sts[i] & 0x2)
+                               rtc_int_sts |= BIT(7);
+                       if (int_sts[i] & 0x4)
+                               rtc_int_sts |= BIT(0);
+                       if (int_sts[i] & 0x8)
+                               rtc_int_sts |= BIT(5);
+               }
+
+               ret = rc5t583_write(rc5t583->dev, irq_clr_add[i],
+                               ~int_sts[i]);
+               if (ret < 0)
+                       dev_warn(rc5t583->dev,
+                               "Error in reading reg 0x%02x error: %d\n",
+                               irq_clr_add[i], ret);
+
+               if (main_int_type[i] & RTC_INT)
+                       int_sts[i] = rtc_int_sts;
+       }
+
+       /* Merge gpio interrupts for rising and falling case*/
+       int_sts[7] |= int_sts[8];
+
+       /* Call interrupt handler if enabled */
+       for (i = 0; i < RC5T583_MAX_IRQS; ++i) {
+               const struct rc5t583_irq_data *data = &rc5t583_irqs[i];
+               if ((int_sts[data->mask_reg_index] & (1 << data->int_en_bit)) &&
+                       (rc5t583->group_irq_en[data->master_bit] &
+                                       (1 << data->grp_index)))
+                       handle_nested_irq(rc5t583->irq_base + i);
+       }
+
+       return IRQ_HANDLED;
+}
+
+static struct irq_chip rc5t583_irq_chip = {
+       .name = "rc5t583-irq",
+       .irq_mask = rc5t583_irq_mask,
+       .irq_unmask = rc5t583_irq_unmask,
+       .irq_bus_lock = rc5t583_irq_lock,
+       .irq_bus_sync_unlock = rc5t583_irq_sync_unlock,
+       .irq_set_type = rc5t583_irq_set_type,
+       .irq_set_wake = rc5t583_irq_set_wake,
+};
+
+int rc5t583_irq_init(struct rc5t583 *rc5t583, int irq, int irq_base)
+{
+       int i, ret;
+
+       if (!irq_base) {
+               dev_warn(rc5t583->dev, "No interrupt support on IRQ base\n");
+               return -EINVAL;
+       }
+
+       mutex_init(&rc5t583->irq_lock);
+
+       /* Initailize all int register to 0 */
+       for (i = 0; i < RC5T583_MAX_INTERRUPT_MASK_REGS; i++)  {
+               ret = rc5t583_write(rc5t583->dev, irq_en_add[i],
+                               rc5t583->irq_en_reg[i]);
+               if (ret < 0)
+                       dev_warn(rc5t583->dev,
+                               "Error in writing reg 0x%02x error: %d\n",
+                               irq_en_add[i], ret);
+       }
+
+       for (i = 0; i < RC5T583_MAX_GPEDGE_REG; i++)  {
+               ret = rc5t583_write(rc5t583->dev, gpedge_add[i],
+                               rc5t583->gpedge_reg[i]);
+               if (ret < 0)
+                       dev_warn(rc5t583->dev,
+                               "Error in writing reg 0x%02x error: %d\n",
+                               gpedge_add[i], ret);
+       }
+
+       ret = rc5t583_write(rc5t583->dev, RC5T583_INTC_INTEN, 0x0);
+       if (ret < 0)
+               dev_warn(rc5t583->dev,
+                       "Error in writing reg 0x%02x error: %d\n",
+                       RC5T583_INTC_INTEN, ret);
+
+       /* Clear all interrupts in case they woke up active. */
+       for (i = 0; i < RC5T583_MAX_INTERRUPT_MASK_REGS; i++)  {
+               ret = rc5t583_write(rc5t583->dev, irq_clr_add[i], 0);
+               if (ret < 0)
+                       dev_warn(rc5t583->dev,
+                               "Error in writing reg 0x%02x error: %d\n",
+                               irq_clr_add[i], ret);
+       }
+
+       rc5t583->irq_base = irq_base;
+       rc5t583->chip_irq = irq;
+
+       for (i = 0; i < RC5T583_MAX_IRQS; i++) {
+               int __irq = i + rc5t583->irq_base;
+               irq_set_chip_data(__irq, rc5t583);
+               irq_set_chip_and_handler(__irq, &rc5t583_irq_chip,
+                                        handle_simple_irq);
+               irq_set_nested_thread(__irq, 1);
+#ifdef CONFIG_ARM
+               set_irq_flags(__irq, IRQF_VALID);
+#endif
+       }
+
+       ret = request_threaded_irq(irq, NULL, rc5t583_irq, IRQF_ONESHOT,
+                               "rc5t583", rc5t583);
+       if (ret < 0)
+               dev_err(rc5t583->dev,
+                       "Error in registering interrupt error: %d\n", ret);
+       return ret;
+}
+
+int rc5t583_irq_exit(struct rc5t583 *rc5t583)
+{
+       if (rc5t583->chip_irq)
+               free_irq(rc5t583->chip_irq, rc5t583);
+       return 0;
+}
diff --git a/drivers/mfd/rc5t583.c b/drivers/mfd/rc5t583.c
new file mode 100644 (file)
index 0000000..99ef944
--- /dev/null
@@ -0,0 +1,386 @@
+/*
+ * Core driver access RC5T583 power management chip.
+ *
+ * Copyright (c) 2011-2012, NVIDIA CORPORATION.  All rights reserved.
+ * Author: Laxman dewangan <ldewangan@nvidia.com>
+ *
+ * Based on code
+ *     Copyright (C) 2011 RICOH COMPANY,LTD
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/rc5t583.h>
+#include <linux/regmap.h>
+
+#define RICOH_ONOFFSEL_REG     0x10
+#define RICOH_SWCTL_REG                0x5E
+
+struct deepsleep_control_data {
+       u8 reg_add;
+       u8 ds_pos_bit;
+};
+
+#define DEEPSLEEP_INIT(_id, _reg, _pos)                \
+       {                                       \
+               .reg_add = RC5T583_##_reg,      \
+               .ds_pos_bit = _pos,             \
+       }
+
+static struct deepsleep_control_data deepsleep_data[] = {
+       DEEPSLEEP_INIT(DC0, SLPSEQ1, 0),
+       DEEPSLEEP_INIT(DC1, SLPSEQ1, 4),
+       DEEPSLEEP_INIT(DC2, SLPSEQ2, 0),
+       DEEPSLEEP_INIT(DC3, SLPSEQ2, 4),
+       DEEPSLEEP_INIT(LDO0, SLPSEQ3, 0),
+       DEEPSLEEP_INIT(LDO1, SLPSEQ3, 4),
+       DEEPSLEEP_INIT(LDO2, SLPSEQ4, 0),
+       DEEPSLEEP_INIT(LDO3, SLPSEQ4, 4),
+       DEEPSLEEP_INIT(LDO4, SLPSEQ5, 0),
+       DEEPSLEEP_INIT(LDO5, SLPSEQ5, 4),
+       DEEPSLEEP_INIT(LDO6, SLPSEQ6, 0),
+       DEEPSLEEP_INIT(LDO7, SLPSEQ6, 4),
+       DEEPSLEEP_INIT(LDO8, SLPSEQ7, 0),
+       DEEPSLEEP_INIT(LDO9, SLPSEQ7, 4),
+       DEEPSLEEP_INIT(PSO0, SLPSEQ8, 0),
+       DEEPSLEEP_INIT(PSO1, SLPSEQ8, 4),
+       DEEPSLEEP_INIT(PSO2, SLPSEQ9, 0),
+       DEEPSLEEP_INIT(PSO3, SLPSEQ9, 4),
+       DEEPSLEEP_INIT(PSO4, SLPSEQ10, 0),
+       DEEPSLEEP_INIT(PSO5, SLPSEQ10, 4),
+       DEEPSLEEP_INIT(PSO6, SLPSEQ11, 0),
+       DEEPSLEEP_INIT(PSO7, SLPSEQ11, 4),
+};
+
+#define EXT_PWR_REQ            \
+       (RC5T583_EXT_PWRREQ1_CONTROL | RC5T583_EXT_PWRREQ2_CONTROL)
+
+static struct mfd_cell rc5t583_subdevs[] = {
+       {.name = "rc5t583-regulator",},
+       {.name = "rc5t583-rtc",      },
+       {.name = "rc5t583-key",      }
+};
+
+int rc5t583_write(struct device *dev, uint8_t reg, uint8_t val)
+{
+       struct rc5t583 *rc5t583 = dev_get_drvdata(dev);
+       return regmap_write(rc5t583->regmap, reg, val);
+}
+
+int rc5t583_read(struct device *dev, uint8_t reg, uint8_t *val)
+{
+       struct rc5t583 *rc5t583 = dev_get_drvdata(dev);
+       unsigned int ival;
+       int ret;
+       ret = regmap_read(rc5t583->regmap, reg, &ival);
+       if (!ret)
+               *val = (uint8_t)ival;
+       return ret;
+}
+
+int rc5t583_set_bits(struct device *dev, unsigned int reg,
+                       unsigned int bit_mask)
+{
+       struct rc5t583 *rc5t583 = dev_get_drvdata(dev);
+       return regmap_update_bits(rc5t583->regmap, reg, bit_mask, bit_mask);
+}
+
+int rc5t583_clear_bits(struct device *dev, unsigned int reg,
+                       unsigned int bit_mask)
+{
+       struct rc5t583 *rc5t583 = dev_get_drvdata(dev);
+       return regmap_update_bits(rc5t583->regmap, reg, bit_mask, 0);
+}
+
+int rc5t583_update(struct device *dev, unsigned int reg,
+               unsigned int val, unsigned int mask)
+{
+       struct rc5t583 *rc5t583 = dev_get_drvdata(dev);
+       return regmap_update_bits(rc5t583->regmap, reg, mask, val);
+}
+
+static int __rc5t583_set_ext_pwrreq1_control(struct device *dev,
+       int id, int ext_pwr, int slots)
+{
+       int ret;
+       uint8_t sleepseq_val;
+       unsigned int en_bit;
+       unsigned int slot_bit;
+
+       if (id == RC5T583_DS_DC0) {
+               dev_err(dev, "PWRREQ1 is invalid control for rail %d\n", id);
+               return -EINVAL;
+       }
+
+       en_bit = deepsleep_data[id].ds_pos_bit;
+       slot_bit = en_bit + 1;
+       ret = rc5t583_read(dev, deepsleep_data[id].reg_add, &sleepseq_val);
+       if (ret < 0) {
+               dev_err(dev, "Error in reading reg 0x%x\n",
+                               deepsleep_data[id].reg_add);
+               return ret;
+       }
+
+       sleepseq_val &= ~(0xF << en_bit);
+       sleepseq_val |= BIT(en_bit);
+       sleepseq_val |= ((slots & 0x7) << slot_bit);
+       ret = rc5t583_set_bits(dev, RICOH_ONOFFSEL_REG, BIT(1));
+       if (ret < 0) {
+               dev_err(dev, "Error in updating the 0x%02x register\n",
+                               RICOH_ONOFFSEL_REG);
+               return ret;
+       }
+
+       ret = rc5t583_write(dev, deepsleep_data[id].reg_add, sleepseq_val);
+       if (ret < 0) {
+               dev_err(dev, "Error in writing reg 0x%x\n",
+                               deepsleep_data[id].reg_add);
+               return ret;
+       }
+
+       if (id == RC5T583_DS_LDO4) {
+               ret = rc5t583_write(dev, RICOH_SWCTL_REG, 0x1);
+               if (ret < 0)
+                       dev_err(dev, "Error in writing reg 0x%x\n",
+                               RICOH_SWCTL_REG);
+       }
+       return ret;
+}
+
+static int __rc5t583_set_ext_pwrreq2_control(struct device *dev,
+       int id, int ext_pwr)
+{
+       int ret;
+
+       if (id != RC5T583_DS_DC0) {
+               dev_err(dev, "PWRREQ2 is invalid control for rail %d\n", id);
+               return -EINVAL;
+       }
+
+       ret = rc5t583_set_bits(dev, RICOH_ONOFFSEL_REG, BIT(2));
+       if (ret < 0)
+               dev_err(dev, "Error in updating the ONOFFSEL 0x10 register\n");
+       return ret;
+}
+
+int rc5t583_ext_power_req_config(struct device *dev, int ds_id,
+       int ext_pwr_req, int deepsleep_slot_nr)
+{
+       if ((ext_pwr_req & EXT_PWR_REQ) == EXT_PWR_REQ)
+               return -EINVAL;
+
+       if (ext_pwr_req & RC5T583_EXT_PWRREQ1_CONTROL)
+               return __rc5t583_set_ext_pwrreq1_control(dev, ds_id,
+                               ext_pwr_req, deepsleep_slot_nr);
+
+       if (ext_pwr_req & RC5T583_EXT_PWRREQ2_CONTROL)
+               return __rc5t583_set_ext_pwrreq2_control(dev,
+                       ds_id, ext_pwr_req);
+       return 0;
+}
+
+static int rc5t583_clear_ext_power_req(struct rc5t583 *rc5t583,
+       struct rc5t583_platform_data *pdata)
+{
+       int ret;
+       int i;
+       uint8_t on_off_val = 0;
+
+       /*  Clear ONOFFSEL register */
+       if (pdata->enable_shutdown)
+               on_off_val = 0x1;
+
+       ret = rc5t583_write(rc5t583->dev, RICOH_ONOFFSEL_REG, on_off_val);
+       if (ret < 0)
+               dev_warn(rc5t583->dev, "Error in writing reg %d error: %d\n",
+                                       RICOH_ONOFFSEL_REG, ret);
+
+       ret = rc5t583_write(rc5t583->dev, RICOH_SWCTL_REG, 0x0);
+       if (ret < 0)
+               dev_warn(rc5t583->dev, "Error in writing reg %d error: %d\n",
+                                       RICOH_SWCTL_REG, ret);
+
+       /* Clear sleep sequence register */
+       for (i = RC5T583_SLPSEQ1; i <= RC5T583_SLPSEQ11; ++i) {
+               ret = rc5t583_write(rc5t583->dev, i, 0x0);
+               if (ret < 0)
+                       dev_warn(rc5t583->dev,
+                               "Error in writing reg 0x%02x error: %d\n",
+                               i, ret);
+       }
+       return 0;
+}
+
+static bool volatile_reg(struct device *dev, unsigned int reg)
+{
+       /* Enable caching in interrupt registers */
+       switch (reg) {
+       case RC5T583_INT_EN_SYS1:
+       case RC5T583_INT_EN_SYS2:
+       case RC5T583_INT_EN_DCDC:
+       case RC5T583_INT_EN_RTC:
+       case RC5T583_INT_EN_ADC1:
+       case RC5T583_INT_EN_ADC2:
+       case RC5T583_INT_EN_ADC3:
+       case RC5T583_GPIO_GPEDGE1:
+       case RC5T583_GPIO_GPEDGE2:
+       case RC5T583_GPIO_EN_INT:
+               return false;
+
+       case RC5T583_GPIO_MON_IOIN:
+               /* This is gpio input register */
+               return true;
+
+       default:
+               /* Enable caching in gpio registers */
+               if ((reg >= RC5T583_GPIO_IOSEL) &&
+                               (reg <= RC5T583_GPIO_GPOFUNC))
+                       return false;
+
+               /* Enable caching in sleep seq registers */
+               if ((reg >= RC5T583_SLPSEQ1) && (reg <= RC5T583_SLPSEQ11))
+                       return false;
+
+               /* Enable caching of regulator registers */
+               if ((reg >= RC5T583_REG_DC0CTL) && (reg <= RC5T583_REG_SR3CTL))
+                       return false;
+               if ((reg >= RC5T583_REG_LDOEN1) &&
+                                       (reg <= RC5T583_REG_LDO9DAC_DS))
+                       return false;
+
+               break;
+       }
+
+       return true;
+}
+
+static const struct regmap_config rc5t583_regmap_config = {
+       .reg_bits = 8,
+       .val_bits = 8,
+       .volatile_reg = volatile_reg,
+       .max_register = RC5T583_MAX_REGS,
+       .num_reg_defaults_raw = RC5T583_MAX_REGS,
+       .cache_type = REGCACHE_RBTREE,
+};
+
+static int __devinit rc5t583_i2c_probe(struct i2c_client *i2c,
+                             const struct i2c_device_id *id)
+{
+       struct rc5t583 *rc5t583;
+       struct rc5t583_platform_data *pdata = i2c->dev.platform_data;
+       int ret;
+       bool irq_init_success = false;
+
+       if (!pdata) {
+               dev_err(&i2c->dev, "Err: Platform data not found\n");
+               return -EINVAL;
+       }
+
+       rc5t583 = devm_kzalloc(&i2c->dev, sizeof(struct rc5t583), GFP_KERNEL);
+       if (!rc5t583) {
+               dev_err(&i2c->dev, "Memory allocation failed\n");
+               return -ENOMEM;
+       }
+
+       rc5t583->dev = &i2c->dev;
+       i2c_set_clientdata(i2c, rc5t583);
+
+       rc5t583->regmap = regmap_init_i2c(i2c, &rc5t583_regmap_config);
+       if (IS_ERR(rc5t583->regmap)) {
+               ret = PTR_ERR(rc5t583->regmap);
+               dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
+               return ret;
+       }
+
+       ret = rc5t583_clear_ext_power_req(rc5t583, pdata);
+       if (ret < 0)
+               goto err_irq_init;
+
+       if (i2c->irq) {
+               ret = rc5t583_irq_init(rc5t583, i2c->irq, pdata->irq_base);
+               /* Still continue with waring if irq init fails */
+               if (ret)
+                       dev_warn(&i2c->dev, "IRQ init failed: %d\n", ret);
+               else
+                       irq_init_success = true;
+       }
+
+       ret = mfd_add_devices(rc5t583->dev, -1, rc5t583_subdevs,
+                       ARRAY_SIZE(rc5t583_subdevs), NULL, 0);
+       if (ret) {
+               dev_err(&i2c->dev, "add mfd devices failed: %d\n", ret);
+               goto err_add_devs;
+       }
+
+       return 0;
+
+err_add_devs:
+       if (irq_init_success)
+               rc5t583_irq_exit(rc5t583);
+err_irq_init:
+       regmap_exit(rc5t583->regmap);
+       return ret;
+}
+
+static int  __devexit rc5t583_i2c_remove(struct i2c_client *i2c)
+{
+       struct rc5t583 *rc5t583 = i2c_get_clientdata(i2c);
+
+       mfd_remove_devices(rc5t583->dev);
+       rc5t583_irq_exit(rc5t583);
+       regmap_exit(rc5t583->regmap);
+       return 0;
+}
+
+static const struct i2c_device_id rc5t583_i2c_id[] = {
+       {.name = "rc5t583", .driver_data = 0},
+       {}
+};
+
+MODULE_DEVICE_TABLE(i2c, rc5t583_i2c_id);
+
+static struct i2c_driver rc5t583_i2c_driver = {
+       .driver = {
+                  .name = "rc5t583",
+                  .owner = THIS_MODULE,
+                  },
+       .probe = rc5t583_i2c_probe,
+       .remove = __devexit_p(rc5t583_i2c_remove),
+       .id_table = rc5t583_i2c_id,
+};
+
+static int __init rc5t583_i2c_init(void)
+{
+       return i2c_add_driver(&rc5t583_i2c_driver);
+}
+subsys_initcall(rc5t583_i2c_init);
+
+static void __exit rc5t583_i2c_exit(void)
+{
+       i2c_del_driver(&rc5t583_i2c_driver);
+}
+
+module_exit(rc5t583_i2c_exit);
+
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_DESCRIPTION("RICOH RC5T583 power management system device driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/rc5t583.h b/include/linux/mfd/rc5t583.h
new file mode 100644 (file)
index 0000000..a2c6160
--- /dev/null
@@ -0,0 +1,295 @@
+/*
+ * Core driver interface to access RICOH_RC5T583 power management chip.
+ *
+ * Copyright (c) 2011-2012, NVIDIA CORPORATION.  All rights reserved.
+ * Author: Laxman dewangan <ldewangan@nvidia.com>
+ *
+ * Based on code
+ *      Copyright (C) 2011 RICOH COMPANY,LTD
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef __LINUX_MFD_RC5T583_H
+#define __LINUX_MFD_RC5T583_H
+
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+#define RC5T583_MAX_REGS               0xF8
+
+/* Maximum number of main interrupts */
+#define MAX_MAIN_INTERRUPT             5
+#define RC5T583_MAX_GPEDGE_REG         2
+#define RC5T583_MAX_INTERRUPT_MASK_REGS        9
+
+/* Interrupt enable register */
+#define RC5T583_INT_EN_SYS1    0x19
+#define RC5T583_INT_EN_SYS2    0x1D
+#define RC5T583_INT_EN_DCDC    0x41
+#define RC5T583_INT_EN_RTC     0xED
+#define RC5T583_INT_EN_ADC1    0x90
+#define RC5T583_INT_EN_ADC2    0x91
+#define RC5T583_INT_EN_ADC3    0x92
+
+/* Interrupt status registers (monitor regs in Ricoh)*/
+#define RC5T583_INTC_INTPOL    0xAD
+#define RC5T583_INTC_INTEN     0xAE
+#define RC5T583_INTC_INTMON    0xAF
+
+#define RC5T583_INT_MON_GRP    0xAF
+#define RC5T583_INT_MON_SYS1   0x1B
+#define RC5T583_INT_MON_SYS2   0x1F
+#define RC5T583_INT_MON_DCDC   0x43
+#define RC5T583_INT_MON_RTC    0xEE
+
+/* Interrupt clearing registers */
+#define RC5T583_INT_IR_SYS1    0x1A
+#define RC5T583_INT_IR_SYS2    0x1E
+#define RC5T583_INT_IR_DCDC    0x42
+#define RC5T583_INT_IR_RTC     0xEE
+#define RC5T583_INT_IR_ADCL    0x94
+#define RC5T583_INT_IR_ADCH    0x95
+#define RC5T583_INT_IR_ADCEND  0x96
+#define RC5T583_INT_IR_GPIOR   0xA9
+#define RC5T583_INT_IR_GPIOF   0xAA
+
+/* Sleep sequence registers */
+#define RC5T583_SLPSEQ1                0x21
+#define RC5T583_SLPSEQ2                0x22
+#define RC5T583_SLPSEQ3                0x23
+#define RC5T583_SLPSEQ4                0x24
+#define RC5T583_SLPSEQ5                0x25
+#define RC5T583_SLPSEQ6                0x26
+#define RC5T583_SLPSEQ7                0x27
+#define RC5T583_SLPSEQ8                0x28
+#define RC5T583_SLPSEQ9                0x29
+#define RC5T583_SLPSEQ10       0x2A
+#define RC5T583_SLPSEQ11       0x2B
+
+/* Regulator registers */
+#define RC5T583_REG_DC0CTL     0x30
+#define RC5T583_REG_DC0DAC     0x31
+#define RC5T583_REG_DC0LATCTL  0x32
+#define RC5T583_REG_SR0CTL     0x33
+
+#define RC5T583_REG_DC1CTL     0x34
+#define RC5T583_REG_DC1DAC     0x35
+#define RC5T583_REG_DC1LATCTL  0x36
+#define RC5T583_REG_SR1CTL     0x37
+
+#define RC5T583_REG_DC2CTL     0x38
+#define RC5T583_REG_DC2DAC     0x39
+#define RC5T583_REG_DC2LATCTL  0x3A
+#define RC5T583_REG_SR2CTL     0x3B
+
+#define RC5T583_REG_DC3CTL     0x3C
+#define RC5T583_REG_DC3DAC     0x3D
+#define RC5T583_REG_DC3LATCTL  0x3E
+#define RC5T583_REG_SR3CTL     0x3F
+
+
+#define RC5T583_REG_LDOEN1     0x50
+#define RC5T583_REG_LDOEN2     0x51
+#define RC5T583_REG_LDODIS1    0x52
+#define RC5T583_REG_LDODIS2    0x53
+
+#define RC5T583_REG_LDO0DAC    0x54
+#define RC5T583_REG_LDO1DAC    0x55
+#define RC5T583_REG_LDO2DAC    0x56
+#define RC5T583_REG_LDO3DAC    0x57
+#define RC5T583_REG_LDO4DAC    0x58
+#define RC5T583_REG_LDO5DAC    0x59
+#define RC5T583_REG_LDO6DAC    0x5A
+#define RC5T583_REG_LDO7DAC    0x5B
+#define RC5T583_REG_LDO8DAC    0x5C
+#define RC5T583_REG_LDO9DAC    0x5D
+
+#define RC5T583_REG_DC0DAC_DS  0x60
+#define RC5T583_REG_DC1DAC_DS  0x61
+#define RC5T583_REG_DC2DAC_DS  0x62
+#define RC5T583_REG_DC3DAC_DS  0x63
+
+#define RC5T583_REG_LDO0DAC_DS 0x64
+#define RC5T583_REG_LDO1DAC_DS 0x65
+#define RC5T583_REG_LDO2DAC_DS 0x66
+#define RC5T583_REG_LDO3DAC_DS 0x67
+#define RC5T583_REG_LDO4DAC_DS 0x68
+#define RC5T583_REG_LDO5DAC_DS 0x69
+#define RC5T583_REG_LDO6DAC_DS 0x6A
+#define RC5T583_REG_LDO7DAC_DS 0x6B
+#define RC5T583_REG_LDO8DAC_DS 0x6C
+#define RC5T583_REG_LDO9DAC_DS 0x6D
+
+/* GPIO register base address */
+#define RC5T583_GPIO_IOSEL     0xA0
+#define RC5T583_GPIO_PDEN      0xA1
+#define RC5T583_GPIO_IOOUT     0xA2
+#define RC5T583_GPIO_PGSEL     0xA3
+#define RC5T583_GPIO_GPINV     0xA4
+#define RC5T583_GPIO_GPDEB     0xA5
+#define RC5T583_GPIO_GPEDGE1   0xA6
+#define RC5T583_GPIO_GPEDGE2   0xA7
+#define RC5T583_GPIO_EN_INT    0xA8
+#define RC5T583_GPIO_MON_IOIN  0xAB
+#define RC5T583_GPIO_GPOFUNC   0xAC
+
+/* RICOH_RC5T583 IRQ definitions */
+enum {
+       RC5T583_IRQ_ONKEY,
+       RC5T583_IRQ_ACOK,
+       RC5T583_IRQ_LIDOPEN,
+       RC5T583_IRQ_PREOT,
+       RC5T583_IRQ_CLKSTP,
+       RC5T583_IRQ_ONKEY_OFF,
+       RC5T583_IRQ_WD,
+       RC5T583_IRQ_EN_PWRREQ1,
+       RC5T583_IRQ_EN_PWRREQ2,
+       RC5T583_IRQ_PRE_VINDET,
+
+       RC5T583_IRQ_DC0LIM,
+       RC5T583_IRQ_DC1LIM,
+       RC5T583_IRQ_DC2LIM,
+       RC5T583_IRQ_DC3LIM,
+
+       RC5T583_IRQ_CTC,
+       RC5T583_IRQ_YALE,
+       RC5T583_IRQ_DALE,
+       RC5T583_IRQ_WALE,
+
+       RC5T583_IRQ_AIN1L,
+       RC5T583_IRQ_AIN2L,
+       RC5T583_IRQ_AIN3L,
+       RC5T583_IRQ_VBATL,
+       RC5T583_IRQ_VIN3L,
+       RC5T583_IRQ_VIN8L,
+       RC5T583_IRQ_AIN1H,
+       RC5T583_IRQ_AIN2H,
+       RC5T583_IRQ_AIN3H,
+       RC5T583_IRQ_VBATH,
+       RC5T583_IRQ_VIN3H,
+       RC5T583_IRQ_VIN8H,
+       RC5T583_IRQ_ADCEND,
+
+       RC5T583_IRQ_GPIO0,
+       RC5T583_IRQ_GPIO1,
+       RC5T583_IRQ_GPIO2,
+       RC5T583_IRQ_GPIO3,
+       RC5T583_IRQ_GPIO4,
+       RC5T583_IRQ_GPIO5,
+       RC5T583_IRQ_GPIO6,
+       RC5T583_IRQ_GPIO7,
+
+       /* Should be last entry */
+       RC5T583_MAX_IRQS,
+};
+
+/* Ricoh583 gpio definitions */
+enum {
+       RC5T583_GPIO0,
+       RC5T583_GPIO1,
+       RC5T583_GPIO2,
+       RC5T583_GPIO3,
+       RC5T583_GPIO4,
+       RC5T583_GPIO5,
+       RC5T583_GPIO6,
+       RC5T583_GPIO7,
+
+       /* Should be last entry */
+       RC5T583_MAX_GPIO,
+};
+
+enum {
+       RC5T583_DS_NONE,
+       RC5T583_DS_DC0,
+       RC5T583_DS_DC1,
+       RC5T583_DS_DC2,
+       RC5T583_DS_DC3,
+       RC5T583_DS_LDO0,
+       RC5T583_DS_LDO1,
+       RC5T583_DS_LDO2,
+       RC5T583_DS_LDO3,
+       RC5T583_DS_LDO4,
+       RC5T583_DS_LDO5,
+       RC5T583_DS_LDO6,
+       RC5T583_DS_LDO7,
+       RC5T583_DS_LDO8,
+       RC5T583_DS_LDO9,
+       RC5T583_DS_PSO0,
+       RC5T583_DS_PSO1,
+       RC5T583_DS_PSO2,
+       RC5T583_DS_PSO3,
+       RC5T583_DS_PSO4,
+       RC5T583_DS_PSO5,
+       RC5T583_DS_PSO6,
+       RC5T583_DS_PSO7,
+
+       /* Should be last entry */
+       RC5T583_DS_MAX,
+};
+
+/*
+ * Ricoh pmic RC5T583 supports sleep through two external controls.
+ * The output of gpios and regulator can be enable/disable through
+ * this external signals.
+ */
+enum {
+       RC5T583_EXT_PWRREQ1_CONTROL = 0x1,
+       RC5T583_EXT_PWRREQ2_CONTROL = 0x2,
+};
+
+struct rc5t583 {
+       struct device   *dev;
+       struct regmap   *regmap;
+       int             chip_irq;
+       int             irq_base;
+       struct mutex    irq_lock;
+       unsigned long   group_irq_en[MAX_MAIN_INTERRUPT];
+
+       /* For main interrupt bits in INTC */
+       uint8_t         intc_inten_reg;
+
+       /* For group interrupt bits and address */
+       uint8_t         irq_en_reg[RC5T583_MAX_INTERRUPT_MASK_REGS];
+
+       /* For gpio edge */
+       uint8_t         gpedge_reg[RC5T583_MAX_GPEDGE_REG];
+};
+
+/*
+ * rc5t583_platform_data: Platform data for ricoh rc5t583 pmu.
+ * The board specific data is provided through this structure.
+ * @irq_base: Irq base number on which this device registers their interrupts.
+ * @enable_shutdown: Enable shutdown through the input pin "shutdown".
+ */
+
+struct rc5t583_platform_data {
+       int             irq_base;
+       bool            enable_shutdown;
+};
+
+int rc5t583_write(struct device *dev, u8 reg, uint8_t val);
+int rc5t583_read(struct device *dev, uint8_t reg, uint8_t *val);
+int rc5t583_set_bits(struct device *dev, unsigned int reg,
+               unsigned int bit_mask);
+int rc5t583_clear_bits(struct device *dev, unsigned int reg,
+               unsigned int bit_mask);
+int rc5t583_update(struct device *dev, unsigned int reg,
+               unsigned int val, unsigned int mask);
+int rc5t583_ext_power_req_config(struct device *dev, int deepsleep_id,
+       int ext_pwr_req, int deepsleep_slot_nr);
+int rc5t583_irq_init(struct rc5t583 *rc5t583, int irq, int irq_base);
+int rc5t583_irq_exit(struct rc5t583 *rc5t583);
+
+#endif