mfd: Add TPS6586x driver

Add mfd core driver for TPS6586x PMICs family.
The driver provides I/O access for the sub-device drivers and performs
regstration of the sub-devices based on the platform requirements.
In addition it implements GPIOlib interface for the chip GPIOs.

TODO:
        - add interrupt support
        - add platform data for PWM, backlight leds and charger

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/include/linux/mfd/tps6586x.h b/include/linux/mfd/tps6586x.h
new file mode 100644
index 000000000000..772b3ae640af
--- /dev/null
+++ b/include/linux/mfd/tps6586x.h
@@ -0,0 +1,47 @@
+#ifndef __LINUX_MFD_TPS6586X_H
+#define __LINUX_MFD_TPS6586X_H
+
+enum {
+        TPS6586X_ID_SM_0,
+        TPS6586X_ID_SM_1,
+        TPS6586X_ID_SM_2,
+        TPS6586X_ID_LDO_0,
+        TPS6586X_ID_LDO_1,
+        TPS6586X_ID_LDO_2,
+        TPS6586X_ID_LDO_3,
+        TPS6586X_ID_LDO_4,
+        TPS6586X_ID_LDO_5,
+        TPS6586X_ID_LDO_6,
+        TPS6586X_ID_LDO_7,
+        TPS6586X_ID_LDO_8,
+        TPS6586X_ID_LDO_9,
+        TPS6586X_ID_LDO_RTC,
+};
+
+struct tps6586x_subdev_info {
+        int             id;
+        const char      *name;
+        void            *platform_data;
+};
+
+struct tps6586x_platform_data {
+        int num_subdevs;
+        struct tps6586x_subdev_info *subdevs;
+
+        int gpio_base;
+};
+
+/*
+ * NOTE: the functions below are not intended for use outside
+ * of the TPS6586X sub-device drivers
+ */
+extern int tps6586x_write(struct device *dev, int reg, uint8_t val);
+extern int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val);
+extern int tps6586x_read(struct device *dev, int reg, uint8_t *val);
+extern int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val);
+extern int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask);
+extern int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask);
+extern int tps6586x_update(struct device *dev, int reg, uint8_t val,
+                           uint8_t mask);
+
+#endif /*__LINUX_MFD_TPS6586X_H */