mfd: Add Toshiba's TC35892 MFD core
The TC35892 I/O Expander provides 24 GPIOs, a keypad controller, timers,
and a rotator wheel interface. This patch adds the MFD core.
Acked-by: Linus Walleij <linus.walleij@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/tc35892.h b/include/linux/mfd/tc35892.h
new file mode 100644
index 0000000..e47f770
--- /dev/null
+++ b/include/linux/mfd/tc35892.h
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License Terms: GNU General Public License, version 2
+ */
+
+#ifndef __LINUX_MFD_TC35892_H
+#define __LINUX_MFD_TC35892_H
+
+#include <linux/device.h>
+
+#define TC35892_RSTCTRL_IRQRST (1 << 4)
+#define TC35892_RSTCTRL_TIMRST (1 << 3)
+#define TC35892_RSTCTRL_ROTRST (1 << 2)
+#define TC35892_RSTCTRL_KBDRST (1 << 1)
+#define TC35892_RSTCTRL_GPIRST (1 << 0)
+
+#define TC35892_IRQST 0x91
+
+#define TC35892_MANFCODE_MAGIC 0x03
+#define TC35892_MANFCODE 0x80
+#define TC35892_VERSION 0x81
+#define TC35892_IOCFG 0xA7
+
+#define TC35892_CLKMODE 0x88
+#define TC35892_CLKCFG 0x89
+#define TC35892_CLKEN 0x8A
+
+#define TC35892_RSTCTRL 0x82
+#define TC35892_EXTRSTN 0x83
+#define TC35892_RSTINTCLR 0x84
+
+#define TC35892_GPIOIS0 0xC9
+#define TC35892_GPIOIS1 0xCA
+#define TC35892_GPIOIS2 0xCB
+#define TC35892_GPIOIBE0 0xCC
+#define TC35892_GPIOIBE1 0xCD
+#define TC35892_GPIOIBE2 0xCE
+#define TC35892_GPIOIEV0 0xCF
+#define TC35892_GPIOIEV1 0xD0
+#define TC35892_GPIOIEV2 0xD1
+#define TC35892_GPIOIE0 0xD2
+#define TC35892_GPIOIE1 0xD3
+#define TC35892_GPIOIE2 0xD4
+#define TC35892_GPIORIS0 0xD6
+#define TC35892_GPIORIS1 0xD7
+#define TC35892_GPIORIS2 0xD8
+#define TC35892_GPIOMIS0 0xD9
+#define TC35892_GPIOMIS1 0xDA
+#define TC35892_GPIOMIS2 0xDB
+#define TC35892_GPIOIC0 0xDC
+#define TC35892_GPIOIC1 0xDD
+#define TC35892_GPIOIC2 0xDE
+
+#define TC35892_GPIODATA0 0xC0
+#define TC35892_GPIOMASK0 0xc1
+#define TC35892_GPIODATA1 0xC2
+#define TC35892_GPIOMASK1 0xc3
+#define TC35892_GPIODATA2 0xC4
+#define TC35892_GPIOMASK2 0xC5
+
+#define TC35892_GPIODIR0 0xC6
+#define TC35892_GPIODIR1 0xC7
+#define TC35892_GPIODIR2 0xC8
+
+#define TC35892_GPIOSYNC0 0xE6
+#define TC35892_GPIOSYNC1 0xE7
+#define TC35892_GPIOSYNC2 0xE8
+
+#define TC35892_GPIOWAKE0 0xE9
+#define TC35892_GPIOWAKE1 0xEA
+#define TC35892_GPIOWAKE2 0xEB
+
+#define TC35892_GPIOODM0 0xE0
+#define TC35892_GPIOODE0 0xE1
+#define TC35892_GPIOODM1 0xE2
+#define TC35892_GPIOODE1 0xE3
+#define TC35892_GPIOODM2 0xE4
+#define TC35892_GPIOODE2 0xE5
+
+#define TC35892_INT_GPIIRQ 0
+#define TC35892_INT_TI0IRQ 1
+#define TC35892_INT_TI1IRQ 2
+#define TC35892_INT_TI2IRQ 3
+#define TC35892_INT_ROTIRQ 5
+#define TC35892_INT_KBDIRQ 6
+#define TC35892_INT_PORIRQ 7
+
+#define TC35892_NR_INTERNAL_IRQS 8
+#define TC35892_INT_GPIO(x) (TC35892_NR_INTERNAL_IRQS + (x))
+
+struct tc35892 {
+ struct mutex lock;
+ struct device *dev;
+ struct i2c_client *i2c;
+
+ int irq_base;
+ int num_gpio;
+ struct tc35892_platform_data *pdata;
+};
+
+extern int tc35892_reg_write(struct tc35892 *tc35892, u8 reg, u8 data);
+extern int tc35892_reg_read(struct tc35892 *tc35892, u8 reg);
+extern int tc35892_block_read(struct tc35892 *tc35892, u8 reg, u8 length,
+ u8 *values);
+extern int tc35892_block_write(struct tc35892 *tc35892, u8 reg, u8 length,
+ const u8 *values);
+extern int tc35892_set_bits(struct tc35892 *tc35892, u8 reg, u8 mask, u8 val);
+
+/**
+ * struct tc35892_gpio_platform_data - TC35892 GPIO platform data
+ * @gpio_base: first gpio number assigned to TC35892. A maximum of
+ * %TC35892_NR_GPIOS GPIOs will be allocated.
+ */
+struct tc35892_gpio_platform_data {
+ int gpio_base;
+};
+
+/**
+ * struct tc35892_platform_data - TC35892 platform data
+ * @irq_base: base IRQ number. %TC35892_NR_IRQS irqs will be used.
+ * @gpio: GPIO-specific platform data
+ */
+struct tc35892_platform_data {
+ int irq_base;
+ struct tc35892_gpio_platform_data *gpio;
+};
+
+#define TC35892_NR_GPIOS 24
+#define TC35892_NR_IRQS TC35892_INT_GPIO(TC35892_NR_GPIOS)
+
+#endif