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/*
* Copyright 2002 Integrated Device Technology, Inc.
* All rights reserved.
*
* GPIO register definition.
*
* Author : ryan.holmQVist@idt.com
* Date : 20011005
* Copyright (C) 2001, 2002 Ryan Holm <ryan.holmQVist@idt.com>
* Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
*/
#ifndef _RC32434_GPIO_H_
#define _RC32434_GPIO_H_
#include <linux/types.h>
struct rb500_gpio_reg {
u32 gpiofunc; /* GPIO Function Register
* gpiofunc[x]==0 bit = gpio
* func[x]==1 bit = altfunc
*/
u32 gpiocfg; /* GPIO Configuration Register
* gpiocfg[x]==0 bit = input
* gpiocfg[x]==1 bit = output
*/
u32 gpiod; /* GPIO Data Register
* gpiod[x] read/write gpio pinX status
*/
u32 gpioilevel; /* GPIO Interrupt Status Register
* interrupt level (see gpioistat)
*/
u32 gpioistat; /* Gpio Interrupt Status Register
* istat[x] = (gpiod[x] == level[x])
* cleared in ISR (STICKY bits)
*/
u32 gpionmien; /* GPIO Non-maskable Interrupt Enable Register */
};
enum gpio_regs
{
GPIO_gpio_v = 0, // gpiofunc use pin as GPIO.
GPIO_alt_v = 1, // gpiofunc use pin as alt.
GPIO_input_v = 0, // gpiocfg use pin as input.
GPIO_output_v = 1, // gpiocfg use pin as output.
GPIO_pin0_b = 0,
GPIO_pin0_m = 0x00000001,
GPIO_pin1_b = 1,
GPIO_pin1_m = 0x00000002,
GPIO_pin2_b = 2,
GPIO_pin2_m = 0x00000004,
GPIO_pin3_b = 3,
GPIO_pin3_m = 0x00000008,
GPIO_pin4_b = 4,
GPIO_pin4_m = 0x00000010,
GPIO_pin5_b = 5,
GPIO_pin5_m = 0x00000020,
GPIO_pin6_b = 6,
GPIO_pin6_m = 0x00000040,
GPIO_pin7_b = 7,
GPIO_pin7_m = 0x00000080,
GPIO_pin8_b = 8,
GPIO_pin8_m = 0x00000100,
GPIO_pin9_b = 9,
GPIO_pin9_m = 0x00000200,
GPIO_pin10_b = 10,
GPIO_pin10_m = 0x00000400,
GPIO_pin11_b = 11,
GPIO_pin11_m = 0x00000800,
GPIO_pin12_b = 12,
GPIO_pin12_m = 0x00001000,
GPIO_pin13_b = 13,
GPIO_pin13_m = 0x00002000,
GPIO_pin14_b = 14,
GPIO_pin14_m = 0x00004000,
GPIO_pin15_b = 15,
GPIO_pin15_m = 0x00008000,
GPIO_pin16_b = 16,
GPIO_pin16_m = 0x00010000,
GPIO_pin17_b = 17,
GPIO_pin17_m = 0x00020000,
GPIO_pin18_b = 18,
GPIO_pin18_m = 0x00040000,
GPIO_pin19_b = 19,
GPIO_pin19_m = 0x00080000,
GPIO_pin20_b = 20,
GPIO_pin20_m = 0x00100000,
GPIO_pin21_b = 21,
GPIO_pin21_m = 0x00200000,
GPIO_pin22_b = 22,
GPIO_pin22_m = 0x00400000,
GPIO_pin23_b = 23,
GPIO_pin23_m = 0x00800000,
GPIO_pin24_b = 24,
GPIO_pin24_m = 0x01000000,
GPIO_pin25_b = 25,
GPIO_pin25_m = 0x02000000,
GPIO_pin26_b = 26,
GPIO_pin26_m = 0x04000000,
GPIO_pin27_b = 27,
GPIO_pin27_m = 0x08000000,
GPIO_pin28_b = 28,
GPIO_pin28_m = 0x10000000,
GPIO_pin29_b = 29,
GPIO_pin29_m = 0x20000000,
GPIO_pin30_b = 30,
GPIO_pin30_m = 0x40000000,
GPIO_pin31_b = 31,
GPIO_pin31_m = 0x80000000,
// Alternate function pins. Corrsponding gpiofunc bit set to GPIO_alt_v.
GPIO_u0sout_b = GPIO_pin0_b, // UART 0 serial out.
GPIO_u0sout_m = GPIO_pin0_m,
GPIO_u0sout_cfg_v = GPIO_output_v,
GPIO_u0sinp_b = GPIO_pin1_b, // UART 0 serial in.
GPIO_u0sinp_m = GPIO_pin1_m,
GPIO_u0sinp_cfg_v = GPIO_input_v,
GPIO_u0rtsn_b = GPIO_pin2_b, // UART 0 req. to send.
GPIO_u0rtsn_m = GPIO_pin2_m,
GPIO_u0rtsn_cfg_v = GPIO_output_v,
GPIO_u0ctsn_b = GPIO_pin3_b, // UART 0 clear to send.
GPIO_u0ctsn_m = GPIO_pin3_m,
GPIO_u0ctsn_cfg_v = GPIO_input_v,
GPIO_maddr22_b = GPIO_pin4_b, // M&P bus bit 22.
GPIO_maddr22_m = GPIO_pin4_m,
GPIO_maddr22_cfg_v = GPIO_output_v,
GPIO_maddr23_b = GPIO_pin5_b, // M&P bus bit 23.
GPIO_maddr23_m = GPIO_pin5_m,
GPIO_maddr23_cfg_v = GPIO_output_v,
GPIO_maddr24_b = GPIO_pin6_b, // M&P bus bit 24.
GPIO_maddr24_m = GPIO_pin6_m,
GPIO_maddr24_cfg_v = GPIO_output_v,
GPIO_maddr25_b = GPIO_pin7_b, // M&P bus bit 25.
GPIO_maddr25_m = GPIO_pin7_m,
GPIO_maddr25_cfg_v = GPIO_output_v,
GPIO_cpu_b = GPIO_pin8_b, // M&P bus bit 25.
GPIO_cpu_m = GPIO_pin8_m,
GPIO_cpu_cfg_v = GPIO_output_v,
GPIO_afspare6_b = GPIO_pin9_b, // reserved.
GPIO_afspare6_m = GPIO_pin9_m,
GPIO_afspare6_cfg_v = GPIO_input_v,
GPIO_afspare4_b = GPIO_pin10_b, // reserved.
GPIO_afspare4_m = GPIO_pin10_m,
GPIO_afspare4_cfg_v = GPIO_input_v,
GPIO_afspare3_b = GPIO_pin11_b, // reserved.
GPIO_afspare3_m = GPIO_pin11_m,
GPIO_afspare3_cfg_v = GPIO_input_v,
GPIO_afspare2_b = GPIO_pin12_b, // reserved.
GPIO_afspare2_m = GPIO_pin12_m,
GPIO_afspare2_cfg_v = GPIO_input_v,
GPIO_pcimuintn_b = GPIO_pin13_b, // PCI messaging int.
GPIO_pcimuintn_m = GPIO_pin13_m,
GPIO_pcimuintn_cfg_v = GPIO_output_v,
};
extern int rb500_gpio_get_value(unsigned gpio);
extern void rb500_gpio_set_value(unsigned gpio, int value);
extern int rb500_gpio_direction_input(unsigned gpio);
extern int rb500_gpio_direction_output(unsigned gpio, int value);
/* Wrappers for the arch-neutral GPIO API */
static inline int gpio_request(unsigned gpio, const char *label)
{
/* Not yet implemented */
return 0;
}
static inline void gpio_free(unsigned gpio)
{
/* Not yet implemented */
}
static inline int gpio_direction_input(unsigned gpio)
{
return rb500_gpio_direction_input(gpio);
}
static inline int gpio_direction_output(unsigned gpio, int value)
{
return rb500_gpio_direction_output(gpio, value);
}
static inline int gpio_get_value(unsigned gpio)
{
return rb500_gpio_get_value(gpio);
}
static inline void gpio_set_value(unsigned gpio, int value)
{
rb500_gpio_set_value(gpio, value);
}
static inline int gpio_to_irq(unsigned gpio)
{
return gpio;
}
static inline int irq_to_gpio(unsigned irq)
{
return irq;
}
/* For cansleep */
#include <asm-generic/gpio.h>
#endif /* _RC32434_GPIO_H_ */
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