mfd: Support 88pm80x in 80x driver

88PM800 and 88PM805 are two discrete chips used for power management.
Hardware designer can use them together or only one of them according
to requirement.

88pm80x.c provides common i2c driver handling for both 800 and
805, such as i2c_driver init, regmap init, read/write api etc.

88pm800.c handles specifically for 800, such as chip init, irq
init/handle, mfd device register, including rtc, onkey, regulator(
to be add later) etc. besides that, 800 has three i2c device, one
regular i2c client, two other i2c dummy for gpadc and power purpose.

88pm805.c handles specifically for 805, such as chip init, irq
init/handle, mfd device register, including codec, headset/mic detect
etc.

the i2c operation of both 800 and 805 are via regmap, and 88pm80x-i2c
exported a group of r/w bulk r/w and bits set API for facility.

Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 368 insertions, 0 deletions

diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h
new file mode 100644
index 000000000000..6c126e9714a3
--- /dev/null
+++ b/include/linux/mfd/88pm80x.h
@@ -0,0 +1,368 @@
+/*
+ * Marvell 88PM80x Interface
+ *
+ * Copyright (C) 2012 Marvell International Ltd.
+ * Qiao Zhou <zhouqiao@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_88PM80X_H
+#define __LINUX_MFD_88PM80X_H
+
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/regmap.h>
+#include <linux/atomic.h>
+
+#define PM80X_VERSION_MASK              (0xFF)  /* 80X chip ID mask */
+enum {
+        CHIP_INVALID = 0,
+        CHIP_PM800,
+        CHIP_PM805,
+        CHIP_MAX,
+};
+
+enum {
+        PM800_ID_BUCK1 = 0,
+        PM800_ID_BUCK2,
+        PM800_ID_BUCK3,
+        PM800_ID_BUCK4,
+        PM800_ID_BUCK5,
+
+        PM800_ID_LDO1,
+        PM800_ID_LDO2,
+        PM800_ID_LDO3,
+        PM800_ID_LDO4,
+        PM800_ID_LDO5,
+        PM800_ID_LDO6,
+        PM800_ID_LDO7,
+        PM800_ID_LDO8,
+        PM800_ID_LDO9,
+        PM800_ID_LDO10,
+        PM800_ID_LDO11,
+        PM800_ID_LDO12,
+        PM800_ID_LDO13,
+        PM800_ID_LDO14,
+        PM800_ID_LDO15,
+        PM800_ID_LDO16,
+        PM800_ID_LDO17,
+        PM800_ID_LDO18,
+        PM800_ID_LDO19,
+
+        PM800_ID_RG_MAX,
+};
+#define PM800_MAX_REGULATOR     PM800_ID_RG_MAX /* 5 Bucks, 19 LDOs */
+#define PM800_NUM_BUCK (5)      /*5 Bucks */
+#define PM800_NUM_LDO (19)      /*19 Bucks */
+
+/* page 0 basic: slave adder 0x60 */
+
+#define PM800_STATUS_1                  (0x01)
+#define PM800_ONKEY_STS1                (1 << 0)
+#define PM800_EXTON_STS1                (1 << 1)
+#define PM800_CHG_STS1                  (1 << 2)
+#define PM800_BAT_STS1                  (1 << 3)
+#define PM800_VBUS_STS1                 (1 << 4)
+#define PM800_LDO_PGOOD_STS1    (1 << 5)
+#define PM800_BUCK_PGOOD_STS1   (1 << 6)
+
+#define PM800_STATUS_2                  (0x02)
+#define PM800_RTC_ALARM_STS2    (1 << 0)
+
+/* Wakeup Registers */
+#define PM800_WAKEUP1           (0x0D)
+
+#define PM800_WAKEUP2           (0x0E)
+#define PM800_WAKEUP2_INV_INT           (1 << 0)
+#define PM800_WAKEUP2_INT_CLEAR         (1 << 1)
+#define PM800_WAKEUP2_INT_MASK          (1 << 2)
+
+#define PM800_POWER_UP_LOG      (0x10)
+
+/* Referance and low power registers */
+#define PM800_LOW_POWER1                (0x20)
+#define PM800_LOW_POWER2                (0x21)
+#define PM800_LOW_POWER_CONFIG3 (0x22)
+#define PM800_LOW_POWER_CONFIG4 (0x23)
+
+/* GPIO register */
+#define PM800_GPIO_0_1_CNTRL            (0x30)
+#define PM800_GPIO0_VAL                         (1 << 0)
+#define PM800_GPIO0_GPIO_MODE(x)        (x << 1)
+#define PM800_GPIO1_VAL                         (1 << 4)
+#define PM800_GPIO1_GPIO_MODE(x)        (x << 5)
+
+#define PM800_GPIO_2_3_CNTRL            (0x31)
+#define PM800_GPIO2_VAL                         (1 << 0)
+#define PM800_GPIO2_GPIO_MODE(x)        (x << 1)
+#define PM800_GPIO3_VAL                         (1 << 4)
+#define PM800_GPIO3_GPIO_MODE(x)        (x << 5)
+#define PM800_GPIO3_MODE_MASK           0x1F
+#define PM800_GPIO3_HEADSET_MODE        PM800_GPIO3_GPIO_MODE(6)
+
+#define PM800_GPIO_4_CNTRL                      (0x32)
+#define PM800_GPIO4_VAL                         (1 << 0)
+#define PM800_GPIO4_GPIO_MODE(x)        (x << 1)
+
+#define PM800_HEADSET_CNTRL             (0x38)
+#define PM800_HEADSET_DET_EN            (1 << 7)
+#define PM800_HSDET_SLP                 (1 << 1)
+/* PWM register */
+#define PM800_PWM1              (0x40)
+#define PM800_PWM2              (0x41)
+#define PM800_PWM3              (0x42)
+#define PM800_PWM4              (0x43)
+
+/* RTC Registers */
+#define PM800_RTC_CONTROL               (0xD0)
+#define PM800_RTC_MISC1                 (0xE1)
+#define PM800_RTC_MISC2                 (0xE2)
+#define PM800_RTC_MISC3                 (0xE3)
+#define PM800_RTC_MISC4                 (0xE4)
+#define PM800_RTC_MISC5                 (0xE7)
+/* bit definitions of RTC Register 1 (0xD0) */
+#define PM800_ALARM1_EN                 (1 << 0)
+#define PM800_ALARM_WAKEUP              (1 << 4)
+#define PM800_ALARM                     (1 << 5)
+#define PM800_RTC1_USE_XO               (1 << 7)
+
+/* Regulator Control Registers: BUCK1,BUCK5,LDO1 have DVC */
+
+/* buck registers */
+#define PM800_SLEEP_BUCK1       (0x30)
+
+/* BUCK Sleep Mode Register 1: BUCK[1..4] */
+#define PM800_BUCK_SLP1         (0x5A)
+#define PM800_BUCK1_SLP1_SHIFT  0
+#define PM800_BUCK1_SLP1_MASK   (0x3 << PM800_BUCK1_SLP1_SHIFT)
+
+/* page 2 GPADC: slave adder 0x02 */
+#define PM800_GPADC_MEAS_EN1            (0x01)
+#define PM800_MEAS_EN1_VBAT         (1 << 2)
+#define PM800_GPADC_MEAS_EN2            (0x02)
+#define PM800_MEAS_EN2_RFTMP        (1 << 0)
+#define PM800_MEAS_GP0_EN                       (1 << 2)
+#define PM800_MEAS_GP1_EN                       (1 << 3)
+#define PM800_MEAS_GP2_EN                       (1 << 4)
+#define PM800_MEAS_GP3_EN                       (1 << 5)
+#define PM800_MEAS_GP4_EN                       (1 << 6)
+
+#define PM800_GPADC_MISC_CONFIG1        (0x05)
+#define PM800_GPADC_MISC_CONFIG2        (0x06)
+#define PM800_GPADC_MISC_GPFSM_EN       (1 << 0)
+#define PM800_GPADC_SLOW_MODE(x)        (x << 3)
+
+#define PM800_GPADC_MISC_CONFIG3                (0x09)
+#define PM800_GPADC_MISC_CONFIG4                (0x0A)
+
+#define PM800_GPADC_PREBIAS1                    (0x0F)
+#define PM800_GPADC0_GP_PREBIAS_TIME(x) (x << 0)
+#define PM800_GPADC_PREBIAS2                    (0x10)
+
+#define PM800_GP_BIAS_ENA1                              (0x14)
+#define PM800_GPADC_GP_BIAS_EN0                 (1 << 0)
+#define PM800_GPADC_GP_BIAS_EN1                 (1 << 1)
+#define PM800_GPADC_GP_BIAS_EN2                 (1 << 2)
+#define PM800_GPADC_GP_BIAS_EN3                 (1 << 3)
+
+#define PM800_GP_BIAS_OUT1              (0x15)
+#define PM800_BIAS_OUT_GP0              (1 << 0)
+#define PM800_BIAS_OUT_GP1              (1 << 1)
+#define PM800_BIAS_OUT_GP2              (1 << 2)
+#define PM800_BIAS_OUT_GP3              (1 << 3)
+
+#define PM800_GPADC0_LOW_TH             0x20
+#define PM800_GPADC1_LOW_TH             0x21
+#define PM800_GPADC2_LOW_TH             0x22
+#define PM800_GPADC3_LOW_TH             0x23
+#define PM800_GPADC4_LOW_TH             0x24
+
+#define PM800_GPADC0_UPP_TH             0x30
+#define PM800_GPADC1_UPP_TH             0x31
+#define PM800_GPADC2_UPP_TH             0x32
+#define PM800_GPADC3_UPP_TH             0x33
+#define PM800_GPADC4_UPP_TH             0x34
+
+#define PM800_VBBAT_MEAS1               0x40
+#define PM800_VBBAT_MEAS2               0x41
+#define PM800_VBAT_MEAS1                0x42
+#define PM800_VBAT_MEAS2                0x43
+#define PM800_VSYS_MEAS1                0x44
+#define PM800_VSYS_MEAS2                0x45
+#define PM800_VCHG_MEAS1                0x46
+#define PM800_VCHG_MEAS2                0x47
+#define PM800_TINT_MEAS1                0x50
+#define PM800_TINT_MEAS2                0x51
+#define PM800_PMOD_MEAS1                0x52
+#define PM800_PMOD_MEAS2                0x53
+
+#define PM800_GPADC0_MEAS1              0x54
+#define PM800_GPADC0_MEAS2              0x55
+#define PM800_GPADC1_MEAS1              0x56
+#define PM800_GPADC1_MEAS2              0x57
+#define PM800_GPADC2_MEAS1              0x58
+#define PM800_GPADC2_MEAS2              0x59
+#define PM800_GPADC3_MEAS1              0x5A
+#define PM800_GPADC3_MEAS2              0x5B
+#define PM800_GPADC4_MEAS1              0x5C
+#define PM800_GPADC4_MEAS2              0x5D
+
+#define PM800_GPADC4_AVG1               0xA8
+#define PM800_GPADC4_AVG2               0xA9
+
+/* 88PM805 Registers */
+#define PM805_MAIN_POWERUP              (0x01)
+#define PM805_INT_STATUS0               (0x02)  /* for ena/dis all interrupts */
+
+#define PM805_STATUS0_INT_CLEAR         (1 << 0)
+#define PM805_STATUS0_INV_INT           (1 << 1)
+#define PM800_STATUS0_INT_MASK          (1 << 2)
+
+#define PM805_INT_STATUS1               (0x03)
+
+#define PM805_INT1_HP1_SHRT             (1 << 0)
+#define PM805_INT1_HP2_SHRT             (1 << 1)
+#define PM805_INT1_MIC_CONFLICT         (1 << 2)
+#define PM805_INT1_CLIP_FAULT           (1 << 3)
+#define PM805_INT1_LDO_OFF                      (1 << 4)
+#define PM805_INT1_SRC_DPLL_LOCK        (1 << 5)
+
+#define PM805_INT_STATUS2               (0x04)
+
+#define PM805_INT2_MIC_DET                      (1 << 0)
+#define PM805_INT2_SHRT_BTN_DET         (1 << 1)
+#define PM805_INT2_VOLM_BTN_DET         (1 << 2)
+#define PM805_INT2_VOLP_BTN_DET         (1 << 3)
+#define PM805_INT2_RAW_PLL_FAULT        (1 << 4)
+#define PM805_INT2_FINE_PLL_FAULT       (1 << 5)
+
+#define PM805_INT_MASK1                 (0x05)
+#define PM805_INT_MASK2                 (0x06)
+#define PM805_SHRT_BTN_DET              (1 << 1)
+
+/* number of status and int reg in a row */
+#define PM805_INT_REG_NUM               (2)
+
+#define PM805_MIC_DET1                  (0x07)
+#define PM805_MIC_DET_EN_MIC_DET (1 << 0)
+#define PM805_MIC_DET2                  (0x08)
+#define PM805_MIC_DET_STATUS1   (0x09)
+
+#define PM805_MIC_DET_STATUS3   (0x0A)
+#define PM805_AUTO_SEQ_STATUS1  (0x0B)
+#define PM805_AUTO_SEQ_STATUS2  (0x0C)
+
+#define PM805_ADC_SETTING1              (0x10)
+#define PM805_ADC_SETTING2              (0x11)
+#define PM805_ADC_SETTING3              (0x11)
+#define PM805_ADC_GAIN1                 (0x12)
+#define PM805_ADC_GAIN2                 (0x13)
+#define PM805_DMIC_SETTING              (0x15)
+#define PM805_DWS_SETTING               (0x16)
+#define PM805_MIC_CONFLICT_STS  (0x17)
+
+#define PM805_PDM_SETTING1              (0x20)
+#define PM805_PDM_SETTING2              (0x21)
+#define PM805_PDM_SETTING3              (0x22)
+#define PM805_PDM_CONTROL1              (0x23)
+#define PM805_PDM_CONTROL2              (0x24)
+#define PM805_PDM_CONTROL3              (0x25)
+
+#define PM805_HEADPHONE_SETTING                 (0x26)
+#define PM805_HEADPHONE_GAIN_A2A                (0x27)
+#define PM805_HEADPHONE_SHORT_STATE             (0x28)
+#define PM805_EARPHONE_SETTING                  (0x29)
+#define PM805_AUTO_SEQ_SETTING                  (0x2A)
+
+struct pm80x_rtc_pdata {
+        int             vrtc;
+        int             rtc_wakeup;
+};
+
+struct pm80x_subchip {
+        struct i2c_client *power_page;  /* chip client for power page */
+        struct i2c_client *gpadc_page;  /* chip client for gpadc page */
+        struct regmap *regmap_power;
+        struct regmap *regmap_gpadc;
+        unsigned short power_page_addr; /* power page I2C address */
+        unsigned short gpadc_page_addr; /* gpadc page I2C address */
+};
+
+struct pm80x_chip {
+        struct pm80x_subchip *subchip;
+        struct device *dev;
+        struct i2c_client *client;
+        struct regmap *regmap;
+        struct regmap_irq_chip *regmap_irq_chip;
+        struct regmap_irq_chip_data *irq_data;
+        unsigned char version;
+        int id;
+        int irq;
+        int irq_mode;
+        unsigned long wu_flag;
+        spinlock_t lock;
+};
+
+struct pm80x_platform_data {
+        struct pm80x_rtc_pdata *rtc;
+        unsigned short power_page_addr; /* power page I2C address */
+        unsigned short gpadc_page_addr; /* gpadc page I2C address */
+        int irq_mode;           /* Clear interrupt by read/write(0/1) */
+        int batt_det;           /* enable/disable */
+        int (*plat_config)(struct pm80x_chip *chip,
+                                struct pm80x_platform_data *pdata);
+};
+
+extern const struct dev_pm_ops pm80x_pm_ops;
+extern const struct regmap_config pm80x_regmap_config;
+
+static inline int pm80x_request_irq(struct pm80x_chip *pm80x, int irq,
+                                     irq_handler_t handler, unsigned long flags,
+                                     const char *name, void *data)
+{
+        if (!pm80x->irq_data)
+                return -EINVAL;
+        return request_threaded_irq(regmap_irq_get_virq(pm80x->irq_data, irq),
+                                    NULL, handler, flags, name, data);
+}
+
+static inline void pm80x_free_irq(struct pm80x_chip *pm80x, int irq, void *data)
+{
+        if (!pm80x->irq_data)
+                return;
+        free_irq(regmap_irq_get_virq(pm80x->irq_data, irq), data);
+}
+
+#ifdef CONFIG_PM
+static inline int pm80x_dev_suspend(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+        int irq = platform_get_irq(pdev, 0);
+
+        if (device_may_wakeup(dev))
+                set_bit((1 << irq), &chip->wu_flag);
+
+        return 0;
+}
+
+static inline int pm80x_dev_resume(struct device *dev)
+{
+        struct platform_device *pdev = to_platform_device(dev);
+        struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent);
+        int irq = platform_get_irq(pdev, 0);
+
+        if (device_may_wakeup(dev))
+                clear_bit((1 << irq), &chip->wu_flag);
+
+        return 0;
+}
+#endif
+
+extern int pm80x_init(struct i2c_client *client,
+                             const struct i2c_device_id *id) __devinit;
+extern int pm80x_deinit(struct i2c_client *client) __devexit;
+#endif /* __LINUX_MFD_88PM80X_H */