mfd: ab5500 chip register access

The analog baseband chip ab5500 is a multi functional chip
containing regulators, charging, gpio, USB and accessory detect.
It also contain various multimedia functionalities like digital
encoder and audio codec.
The core driver added with this patch provides register access via
i2c via PRCMU. Event handling implemented as irq_chip will come in
future patches since it depends on PRCMU functionality not yet
implemented.

Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

2 files changed, 142 insertions, 2 deletions

diff --git a/include/linux/mfd/ab5500/ab5500.h b/include/linux/mfd/ab5500/ab5500.h
new file mode 100644
index 000000000000..a720051ae933
--- /dev/null
+++ b/include/linux/mfd/ab5500/ab5500.h
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) ST-Ericsson 2011
+ *
+ * License Terms: GNU General Public License v2
+ */
+#ifndef MFD_AB5500_H
+#define MFD_AB5500_H
+
+#include <linux/device.h>
+
+enum ab5500_devid {
+        AB5500_DEVID_ADC,
+        AB5500_DEVID_LEDS,
+        AB5500_DEVID_POWER,
+        AB5500_DEVID_REGULATORS,
+        AB5500_DEVID_SIM,
+        AB5500_DEVID_RTC,
+        AB5500_DEVID_CHARGER,
+        AB5500_DEVID_FUELGAUGE,
+        AB5500_DEVID_VIBRATOR,
+        AB5500_DEVID_CODEC,
+        AB5500_DEVID_USB,
+        AB5500_DEVID_OTP,
+        AB5500_DEVID_VIDEO,
+        AB5500_DEVID_DBIECI,
+        AB5500_DEVID_ONSWA,
+        AB5500_NUM_DEVICES,
+};
+
+enum ab5500_banks {
+        AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP = 0,
+        AB5500_BANK_VDDDIG_IO_I2C_CLK_TST = 1,
+        AB5500_BANK_VDENC = 2,
+        AB5500_BANK_SIM_USBSIM  = 3,
+        AB5500_BANK_LED = 4,
+        AB5500_BANK_ADC  = 5,
+        AB5500_BANK_RTC  = 6,
+        AB5500_BANK_STARTUP  = 7,
+        AB5500_BANK_DBI_ECI  = 8,
+        AB5500_BANK_CHG  = 9,
+        AB5500_BANK_FG_BATTCOM_ACC = 10,
+        AB5500_BANK_USB = 11,
+        AB5500_BANK_IT = 12,
+        AB5500_BANK_VIBRA = 13,
+        AB5500_BANK_AUDIO_HEADSETUSB = 14,
+        AB5500_NUM_BANKS = 15,
+};
+
+enum ab5500_banks_addr {
+        AB5500_ADDR_VIT_IO_I2C_CLK_TST_OTP = 0x4A,
+        AB5500_ADDR_VDDDIG_IO_I2C_CLK_TST = 0x4B,
+        AB5500_ADDR_VDENC = 0x06,
+        AB5500_ADDR_SIM_USBSIM  = 0x04,
+        AB5500_ADDR_LED = 0x10,
+        AB5500_ADDR_ADC  = 0x0A,
+        AB5500_ADDR_RTC  = 0x0F,
+        AB5500_ADDR_STARTUP  = 0x03,
+        AB5500_ADDR_DBI_ECI  = 0x07,
+        AB5500_ADDR_CHG  = 0x0B,
+        AB5500_ADDR_FG_BATTCOM_ACC = 0x0C,
+        AB5500_ADDR_USB = 0x05,
+        AB5500_ADDR_IT = 0x0E,
+        AB5500_ADDR_VIBRA = 0x02,
+        AB5500_ADDR_AUDIO_HEADSETUSB = 0x0D,
+};
+
+/*
+ * Interrupt register offsets
+ * Bank : 0x0E
+ */
+#define AB5500_IT_SOURCE0_REG           0x20
+#define AB5500_IT_SOURCE1_REG           0x21
+#define AB5500_IT_SOURCE2_REG           0x22
+#define AB5500_IT_SOURCE3_REG           0x23
+#define AB5500_IT_SOURCE4_REG           0x24
+#define AB5500_IT_SOURCE5_REG           0x25
+#define AB5500_IT_SOURCE6_REG           0x26
+#define AB5500_IT_SOURCE7_REG           0x27
+#define AB5500_IT_SOURCE8_REG           0x28
+#define AB5500_IT_SOURCE9_REG           0x29
+#define AB5500_IT_SOURCE10_REG          0x2A
+#define AB5500_IT_SOURCE11_REG          0x2B
+#define AB5500_IT_SOURCE12_REG          0x2C
+#define AB5500_IT_SOURCE13_REG          0x2D
+#define AB5500_IT_SOURCE14_REG          0x2E
+#define AB5500_IT_SOURCE15_REG          0x2F
+#define AB5500_IT_SOURCE16_REG          0x30
+#define AB5500_IT_SOURCE17_REG          0x31
+#define AB5500_IT_SOURCE18_REG          0x32
+#define AB5500_IT_SOURCE19_REG          0x33
+#define AB5500_IT_SOURCE20_REG          0x34
+#define AB5500_IT_SOURCE21_REG          0x35
+#define AB5500_IT_SOURCE22_REG          0x36
+#define AB5500_IT_SOURCE23_REG          0x37
+
+#define AB5500_NUM_IRQ_REGS             23
+
+/**
+ * struct ab5500
+ * @access_mutex: lock out concurrent accesses to the AB registers
+ * @dev: a pointer to the device struct for this chip driver
+ * @ab5500_irq: the analog baseband irq
+ * @irq_base: the platform configuration irq base for subdevices
+ * @chip_name: name of this chip variant
+ * @chip_id: 8 bit chip ID for this chip variant
+ * @irq_lock: a lock to protect the mask
+ * @abb_events: a local bit mask of the prcmu wakeup events
+ * @event_mask: a local copy of the mask event registers
+ * @last_event_mask: a copy of the last event_mask written to hardware
+ * @startup_events: a copy of the first reading of the event registers
+ * @startup_events_read: whether the first events have been read
+ */
+struct ab5500 {
+        struct mutex access_mutex;
+        struct device *dev;
+        unsigned int ab5500_irq;
+        unsigned int irq_base;
+        char chip_name[32];
+        u8 chip_id;
+        struct mutex irq_lock;
+        u32 abb_events;
+        u8 mask[AB5500_NUM_IRQ_REGS];
+        u8 oldmask[AB5500_NUM_IRQ_REGS];
+        u8 startup_events[AB5500_NUM_IRQ_REGS];
+        bool startup_events_read;
+#ifdef CONFIG_DEBUG_FS
+        unsigned int debug_bank;
+        unsigned int debug_address;
+#endif
+};
+
+struct ab5500_platform_data {
+        struct {unsigned int base; unsigned int count; } irq;
+        void *dev_data[AB5500_NUM_DEVICES];
+        struct abx500_init_settings *init_settings;
+        unsigned int init_settings_sz;
+        bool pm_power_off;
+};
+
+#endif /* MFD_AB5500_H */
diff --git a/include/linux/mfd/abx500.h b/include/linux/mfd/abx500.h
index 896b5e47f16e..79ec2c7b5fab 100644
--- a/include/linux/mfd/abx500.h
+++ b/include/linux/mfd/abx500.h
@@ -31,8 +31,8 @@
 #define AB3100_R2B      0xc8
 #define AB3550_P1A      0x10
 #define AB5500_1_0      0x20
-#define AB5500_2_0      0x21
-#define AB5500_2_1      0x22
+#define AB5500_1_1      0x21
+#define AB5500_2_0      0x24
 
 /* AB8500 CIDs*/
 #define AB8500_CUTEARLY 0x00