mfd: Add irq support in 88pm860x

88PM860x is a complex PMIC device. It contains touch, charger, sound, rtc,
backlight, led, and so on.

Host communicates to 88PM860x by I2C bus. Use thread irq to support this
usage case.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 28 insertions, 26 deletions

diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h
index 5845ae47df30..b4d6018ba0d6 100644
--- a/include/linux/mfd/88pm860x.h
+++ b/include/linux/mfd/88pm860x.h
@@ -12,6 +12,8 @@
 #ifndef __LINUX_MFD_88PM860X_H
 #define __LINUX_MFD_88PM860X_H
 
+#include <linux/interrupt.h>
+
 enum {
         CHIP_INVALID = 0,
         CHIP_PM8606,
@@ -109,33 +111,10 @@ enum {
 
 /* Misc Registers */
 #define PM8607_CHIP_ID                  (0x00)
+#define PM8607_B0_MISC1                 (0x0C)
 #define PM8607_LDO1                     (0x10)
 #define PM8607_DVC3                     (0x26)
-#define PM8607_MISC1                    (0x40)
-
-/* bit definitions for PM8607 events */
-#define PM8607_EVENT_ONKEY              (1 << 0)
-#define PM8607_EVENT_EXTON              (1 << 1)
-#define PM8607_EVENT_CHG                (1 << 2)
-#define PM8607_EVENT_BAT                (1 << 3)
-#define PM8607_EVENT_RTC                (1 << 4)
-#define PM8607_EVENT_CC                 (1 << 5)
-#define PM8607_EVENT_VBAT               (1 << 8)
-#define PM8607_EVENT_VCHG               (1 << 9)
-#define PM8607_EVENT_VSYS               (1 << 10)
-#define PM8607_EVENT_TINT               (1 << 11)
-#define PM8607_EVENT_GPADC0             (1 << 12)
-#define PM8607_EVENT_GPADC1             (1 << 13)
-#define PM8607_EVENT_GPADC2             (1 << 14)
-#define PM8607_EVENT_GPADC3             (1 << 15)
-#define PM8607_EVENT_AUDIO_SHORT        (1 << 16)
-#define PM8607_EVENT_PEN                (1 << 17)
-#define PM8607_EVENT_HEADSET            (1 << 18)
-#define PM8607_EVENT_HOOK               (1 << 19)
-#define PM8607_EVENT_MICIN              (1 << 20)
-#define PM8607_EVENT_CHG_TIMEOUT        (1 << 21)
-#define PM8607_EVENT_CHG_DONE           (1 << 22)
-#define PM8607_EVENT_CHG_FAULT          (1 << 23)
+#define PM8607_A1_MISC1                 (0x40)
 
 /* bit definitions of Status Query Interface */
 #define PM8607_STATUS_CC                (1 << 3)
@@ -154,7 +133,12 @@ enum {
 #define PM8607_BUCK3_DOUBLE             (1 << 6)
 
 /* bit definitions of Misc1 */
-#define PM8607_MISC1_PI2C               (1 << 0)
+#define PM8607_A1_MISC1_PI2C            (1 << 0)
+#define PM8607_B0_MISC1_INV_INT         (1 << 0)
+#define PM8607_B0_MISC1_INT_CLEAR       (1 << 1)
+#define PM8607_B0_MISC1_INT_MASK        (1 << 2)
+#define PM8607_B0_MISC1_PI2C            (1 << 3)
+#define PM8607_B0_MISC1_RESET           (1 << 6)
 
 /* Interrupt Number in 88PM8607 */
 enum {
@@ -187,15 +171,26 @@ enum {
         PM8607_CHIP_B0 = 0x48,
 };
 
+#define PM860X_NUM_IRQ          24
+
+struct pm860x_irq {
+        irq_handler_t           handler;
+        void                    *data;
+};
+
 struct pm860x_chip {
         struct device           *dev;
         struct mutex            io_lock;
+        struct mutex            irq_lock;
         struct i2c_client       *client;
         struct i2c_client       *companion;     /* companion chip client */
+        struct pm860x_irq       irq[PM860X_NUM_IRQ];
 
         int                     buck3_double;   /* DVC ramp slope double */
         unsigned short          companion_addr;
         int                     id;
+        int                     irq_mode;
+        int                     chip_irq;
         unsigned char           chip_version;
 
 };
@@ -210,6 +205,7 @@ enum {
 struct pm860x_platform_data {
         unsigned short  companion_addr; /* I2C address of companion chip */
         int             i2c_port;       /* Controlled by GI2C or PI2C */
+        int             irq_mode;       /* Clear interrupt by read/write(0/1) */
         struct regulator_init_data *regulator[PM8607_MAX_REGULATOR];
 };
 
@@ -220,6 +216,12 @@ extern int pm860x_bulk_write(struct i2c_client *, int, int, unsigned char *);
 extern int pm860x_set_bits(struct i2c_client *, int, unsigned char,
                            unsigned char);
 
+extern int pm860x_mask_irq(struct pm860x_chip *, int);
+extern int pm860x_unmask_irq(struct pm860x_chip *, int);
+extern int pm860x_request_irq(struct pm860x_chip *, int,
+                              irq_handler_t handler, void *);
+extern int pm860x_free_irq(struct pm860x_chip *, int);
+
 extern int pm860x_device_init(struct pm860x_chip *chip,
                               struct pm860x_platform_data *pdata);
 extern void pm860x_device_exit(struct pm860x_chip *chip);