From c4982887cacf2122bc256e901598b58caf4a34be Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Fri, 24 Jun 2005 20:54:35 +0100 Subject: [PATCH] ARM: 2744/1: ixp2000 gpio irq support Patch from Lennert Buytenhek This patch cleans up the ixp2000 gpio irq code and implements the set_irq_type method for gpio irqs so that users can select for which events (falling edge/rising edge/level low/level high) on the gpio pin they want the corresponding gpio irq to be triggered. Signed-off-by: Lennert Buytenhek Signed-off-by: Deepak Saxena Signed-off-by: Russell King --- include/asm-arm/arch-ixp2000/gpio.h | 31 ++++++++++++------------------- include/asm-arm/arch-ixp2000/platform.h | 22 +--------------------- 2 files changed, 13 insertions(+), 40 deletions(-) (limited to 'include/asm-arm/arch-ixp2000') diff --git a/include/asm-arm/arch-ixp2000/gpio.h b/include/asm-arm/arch-ixp2000/gpio.h index 84634af5cc6..03cbbe1fd9d 100644 --- a/include/asm-arm/arch-ixp2000/gpio.h +++ b/include/asm-arm/arch-ixp2000/gpio.h @@ -1,5 +1,5 @@ /* - * include/asm-arm/arch-ixp2000/ixp2000-gpio.h + * include/asm-arm/arch-ixp2000/gpio.h * * Copyright (C) 2002 Intel Corporation. * @@ -16,26 +16,18 @@ * Use this instead of directly setting the GPIO registers. * GPIOs may also be used as GPIOs (e.g. for emulating i2c/smb) */ -#ifndef _ASM_ARCH_IXP2000_GPIO_H_ -#define _ASM_ARCH_IXP2000_GPIO_H_ +#ifndef __ASM_ARCH_GPIO_H +#define __ASM_ARCH_GPIO_H #ifndef __ASSEMBLY__ -#define GPIO_OUT 0x0 -#define GPIO_IN 0x80 + +#define GPIO_IN 0 +#define GPIO_OUT 1 #define IXP2000_GPIO_LOW 0 #define IXP2000_GPIO_HIGH 1 -#define GPIO_NO_EDGES 0 -#define GPIO_FALLING_EDGE 1 -#define GPIO_RISING_EDGE 2 -#define GPIO_BOTH_EDGES 3 -#define GPIO_LEVEL_LOW 4 -#define GPIO_LEVEL_HIGH 8 - -extern void set_GPIO_IRQ_edge(int gpio_nr, int edge); -extern void set_GPIO_IRQ_level(int gpio_nr, int level); -extern void gpio_line_config(int line, int style); +extern void gpio_line_config(int line, int direction); static inline int gpio_line_get(int line) { @@ -45,11 +37,12 @@ static inline int gpio_line_get(int line) static inline void gpio_line_set(int line, int value) { if (value == IXP2000_GPIO_HIGH) { - ixp_reg_write(IXP2000_GPIO_POSR, BIT(line)); - } else if (value == IXP2000_GPIO_LOW) - ixp_reg_write(IXP2000_GPIO_POCR, BIT(line)); + ixp2000_reg_write(IXP2000_GPIO_POSR, 1 << line); + } else if (value == IXP2000_GPIO_LOW) { + ixp2000_reg_write(IXP2000_GPIO_POCR, 1 << line); + } } #endif /* !__ASSEMBLY__ */ -#endif /* ASM_ARCH_IXP2000_GPIO_H_ */ +#endif /* ASM_ARCH_IXP2000_GPIO_H_ */ diff --git a/include/asm-arm/arch-ixp2000/platform.h b/include/asm-arm/arch-ixp2000/platform.h index 901bba6d02b..52ded516ea5 100644 --- a/include/asm-arm/arch-ixp2000/platform.h +++ b/include/asm-arm/arch-ixp2000/platform.h @@ -138,30 +138,10 @@ struct ixp2000_flash_data { unsigned long (*bank_setup)(unsigned long); }; -/* - * GPIO helper functions - */ -#define GPIO_IN 0 -#define GPIO_OUT 1 - -extern void gpio_line_config(int line, int style); - -static inline int gpio_line_get(int line) -{ - return (((*IXP2000_GPIO_PLR) >> line) & 1); -} - -static inline void gpio_line_set(int line, int value) -{ - if (value) - ixp2000_reg_write(IXP2000_GPIO_POSR, (1 << line)); - else - ixp2000_reg_write(IXP2000_GPIO_POCR, (1 << line)); -} - struct ixp2000_i2c_pins { unsigned long sda_pin; unsigned long scl_pin; }; + #endif /* !__ASSEMBLY__ */ -- cgit v1.2.3