2 * Copyright 2002 Integrated Device Technology, Inc.
5 * GPIO register definition.
7 * Author : ryan.holmQVist@idt.com
9 * Copyright (C) 2001, 2002 Ryan Holm <ryan.holmQVist@idt.com>
10 * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
13 #ifndef _RC32434_GPIO_H_
14 #define _RC32434_GPIO_H_
16 #include <linux/types.h>
18 struct rb532_gpio_reg {
19 u32 gpiofunc; /* GPIO Function Register
20 * gpiofunc[x]==0 bit = gpio
21 * func[x]==1 bit = altfunc
23 u32 gpiocfg; /* GPIO Configuration Register
24 * gpiocfg[x]==0 bit = input
25 * gpiocfg[x]==1 bit = output
27 u32 gpiod; /* GPIO Data Register
28 * gpiod[x] read/write gpio pinX status
30 u32 gpioilevel; /* GPIO Interrupt Status Register
31 * interrupt level (see gpioistat)
33 u32 gpioistat; /* Gpio Interrupt Status Register
34 * istat[x] = (gpiod[x] == level[x])
35 * cleared in ISR (STICKY bits)
37 u32 gpionmien; /* GPIO Non-maskable Interrupt Enable Register */
40 /* UART GPIO signals */
41 #define RC32434_UART0_SOUT (1 << 0)
42 #define RC32434_UART0_SIN (1 << 1)
43 #define RC32434_UART0_RTS (1 << 2)
44 #define RC32434_UART0_CTS (1 << 3)
46 /* M & P bus GPIO signals */
47 #define RC32434_MP_BIT_22 (1 << 4)
48 #define RC32434_MP_BIT_23 (1 << 5)
49 #define RC32434_MP_BIT_24 (1 << 6)
50 #define RC32434_MP_BIT_25 (1 << 7)
52 /* CPU GPIO signals */
53 #define RC32434_CPU_GPIO (1 << 8)
55 /* Reserved GPIO signals */
56 #define RC32434_AF_SPARE_6 (1 << 9)
57 #define RC32434_AF_SPARE_4 (1 << 10)
58 #define RC32434_AF_SPARE_3 (1 << 11)
59 #define RC32434_AF_SPARE_2 (1 << 12)
61 /* PCI messaging unit */
62 #define RC32434_PCI_MSU_GPIO (1 << 13)
65 extern void set_434_reg(unsigned reg_offs, unsigned bit, unsigned len, unsigned val);
66 extern unsigned get_434_reg(unsigned reg_offs);
67 extern void set_latch_u5(unsigned char or_mask, unsigned char nand_mask);
68 extern unsigned char get_latch_u5(void);
70 extern int rb532_gpio_get_value(unsigned gpio);
71 extern void rb532_gpio_set_value(unsigned gpio, int value);
72 extern int rb532_gpio_direction_input(unsigned gpio);
73 extern int rb532_gpio_direction_output(unsigned gpio, int value);
74 extern void rb532_gpio_set_int_level(unsigned gpio, int value);
75 extern int rb532_gpio_get_int_level(unsigned gpio);
76 extern void rb532_gpio_set_int_status(unsigned gpio, int value);
77 extern int rb532_gpio_get_int_status(unsigned gpio);
80 /* Wrappers for the arch-neutral GPIO API */
82 static inline int gpio_request(unsigned gpio, const char *label)
84 /* Not yet implemented */
88 static inline void gpio_free(unsigned gpio)
90 /* Not yet implemented */
93 static inline int gpio_direction_input(unsigned gpio)
95 return rb532_gpio_direction_input(gpio);
98 static inline int gpio_direction_output(unsigned gpio, int value)
100 return rb532_gpio_direction_output(gpio, value);
103 static inline int gpio_get_value(unsigned gpio)
105 return rb532_gpio_get_value(gpio);
108 static inline void gpio_set_value(unsigned gpio, int value)
110 rb532_gpio_set_value(gpio, value);
113 static inline int gpio_to_irq(unsigned gpio)
118 static inline int irq_to_gpio(unsigned irq)
124 #include <asm-generic/gpio.h>
126 #endif /* _RC32434_GPIO_H_ */