mfd: New AB8500 driver
Add a new driver to support the AB8500 Power Management chip, replacing
the current AB4500. The new driver replaces the old one, instead of an
incremental modification, because this is a substantial overhaul
including:
- Split of the driver into -core and -spi portions, to allow another
interface layer to be added
- Addition of interrupt support
- Switch to MFD core API for handling subdevices
- Simplification of the APIs to remove a redundant block parameter
- Rename of the APIs and macros from ab4500_* to ab8500_*
- Rename of the files from ab4500* to ab8500*
- Change of the driver name from ab4500 to ab8500
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h
new file mode 100644
index 0000000..b63ff3b
--- /dev/null
+++ b/include/linux/mfd/ab8500.h
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License v2
+ * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
+ */
+#ifndef MFD_AB8500_H
+#define MFD_AB8500_H
+
+#include <linux/device.h>
+
+/*
+ * Interrupts
+ */
+
+#define AB8500_INT_MAIN_EXT_CH_NOT_OK 0
+#define AB8500_INT_UN_PLUG_TV_DET 1
+#define AB8500_INT_PLUG_TV_DET 2
+#define AB8500_INT_TEMP_WARM 3
+#define AB8500_INT_PON_KEY2DB_F 4
+#define AB8500_INT_PON_KEY2DB_R 5
+#define AB8500_INT_PON_KEY1DB_F 6
+#define AB8500_INT_PON_KEY1DB_R 7
+#define AB8500_INT_BATT_OVV 8
+#define AB8500_INT_MAIN_CH_UNPLUG_DET 10
+#define AB8500_INT_MAIN_CH_PLUG_DET 11
+#define AB8500_INT_USB_ID_DET_F 12
+#define AB8500_INT_USB_ID_DET_R 13
+#define AB8500_INT_VBUS_DET_F 14
+#define AB8500_INT_VBUS_DET_R 15
+#define AB8500_INT_VBUS_CH_DROP_END 16
+#define AB8500_INT_RTC_60S 17
+#define AB8500_INT_RTC_ALARM 18
+#define AB8500_INT_BAT_CTRL_INDB 20
+#define AB8500_INT_CH_WD_EXP 21
+#define AB8500_INT_VBUS_OVV 22
+#define AB8500_INT_MAIN_CH_DROP_END 23
+#define AB8500_INT_CCN_CONV_ACC 24
+#define AB8500_INT_INT_AUD 25
+#define AB8500_INT_CCEOC 26
+#define AB8500_INT_CC_INT_CALIB 27
+#define AB8500_INT_LOW_BAT_F 28
+#define AB8500_INT_LOW_BAT_R 29
+#define AB8500_INT_BUP_CHG_NOT_OK 30
+#define AB8500_INT_BUP_CHG_OK 31
+#define AB8500_INT_GP_HW_ADC_CONV_END 32
+#define AB8500_INT_ACC_DETECT_1DB_F 33
+#define AB8500_INT_ACC_DETECT_1DB_R 34
+#define AB8500_INT_ACC_DETECT_22DB_F 35
+#define AB8500_INT_ACC_DETECT_22DB_R 36
+#define AB8500_INT_ACC_DETECT_21DB_F 37
+#define AB8500_INT_ACC_DETECT_21DB_R 38
+#define AB8500_INT_GP_SW_ADC_CONV_END 39
+#define AB8500_INT_BTEMP_LOW 72
+#define AB8500_INT_BTEMP_LOW_MEDIUM 73
+#define AB8500_INT_BTEMP_MEDIUM_HIGH 74
+#define AB8500_INT_BTEMP_HIGH 75
+#define AB8500_INT_USB_CHARGER_NOT_OK 81
+#define AB8500_INT_ID_WAKEUP_R 82
+#define AB8500_INT_ID_DET_R1R 84
+#define AB8500_INT_ID_DET_R2R 85
+#define AB8500_INT_ID_DET_R3R 86
+#define AB8500_INT_ID_DET_R4R 87
+#define AB8500_INT_ID_WAKEUP_F 88
+#define AB8500_INT_ID_DET_R1F 90
+#define AB8500_INT_ID_DET_R2F 91
+#define AB8500_INT_ID_DET_R3F 92
+#define AB8500_INT_ID_DET_R4F 93
+#define AB8500_INT_USB_CHG_DET_DONE 94
+#define AB8500_INT_USB_CH_TH_PROT_F 96
+#define AB8500_INT_USB_CH_TH_PROP_R 97
+#define AB8500_INT_MAIN_CH_TH_PROP_F 98
+#define AB8500_INT_MAIN_CH_TH_PROT_R 99
+#define AB8500_INT_USB_CHARGER_NOT_OKF 103
+
+#define AB8500_NR_IRQS 104
+#define AB8500_NUM_IRQ_REGS 13
+
+/**
+ * struct ab8500 - ab8500 internal structure
+ * @dev: parent device
+ * @lock: read/write operations lock
+ * @irq_lock: genirq bus lock
+ * @revision: chip revision
+ * @irq: irq line
+ * @write: register write
+ * @read: register read
+ * @rx_buf: rx buf for SPI
+ * @tx_buf: tx buf for SPI
+ * @mask: cache of IRQ regs for bus lock
+ * @oldmask: cache of previous IRQ regs for bus lock
+ */
+struct ab8500 {
+ struct device *dev;
+ struct mutex lock;
+ struct mutex irq_lock;
+ int revision;
+ int irq_base;
+ int irq;
+
+ int (*write) (struct ab8500 *a8500, u16 addr, u8 data);
+ int (*read) (struct ab8500 *a8500, u16 addr);
+
+ unsigned long tx_buf[4];
+ unsigned long rx_buf[4];
+
+ u8 mask[AB8500_NUM_IRQ_REGS];
+ u8 oldmask[AB8500_NUM_IRQ_REGS];
+};
+
+/**
+ * struct ab8500_platform_data - AB8500 platform data
+ * @irq_base: start of AB8500 IRQs, AB8500_NR_IRQS will be used
+ * @init: board-specific initialization after detection of ab8500
+ */
+struct ab8500_platform_data {
+ int irq_base;
+ void (*init) (struct ab8500 *);
+};
+
+extern int ab8500_write(struct ab8500 *a8500, u16 addr, u8 data);
+extern int ab8500_read(struct ab8500 *a8500, u16 addr);
+extern int ab8500_set_bits(struct ab8500 *a8500, u16 addr, u8 mask, u8 data);
+
+extern int __devinit ab8500_init(struct ab8500 *ab8500);
+extern int __devexit ab8500_exit(struct ab8500 *ab8500);
+
+#endif /* MFD_AB8500_H */