1/* 2 * Structures and registers for GPIO access in the Nomadik SoC 3 * 4 * Copyright (C) 2008 STMicroelectronics 5 * Author: Prafulla WADASKAR <prafulla.wadaskar@st.com> 6 * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12#ifndef __ASM_PLAT_GPIO_H 13#define __ASM_PLAT_GPIO_H 14 15#include <asm-generic/gpio.h> 16 17/* 18 * These currently cause a function call to happen, they may be optimized 19 * if needed by adding cpu-specific defines to identify blocks 20 * (see mach-pxa/include/mach/gpio.h as an example using GPLR etc) 21 */ 22#define gpio_get_value __gpio_get_value 23#define gpio_set_value __gpio_set_value 24#define gpio_cansleep __gpio_cansleep 25#define gpio_to_irq __gpio_to_irq 26 27/* 28 * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving 29 * the "gpio" namespace for generic and cross-machine functions 30 */ 31 32/* Register in the logic block */ 33#define NMK_GPIO_DAT 0x00 34#define NMK_GPIO_DATS 0x04 35#define NMK_GPIO_DATC 0x08 36#define NMK_GPIO_PDIS 0x0c 37#define NMK_GPIO_DIR 0x10 38#define NMK_GPIO_DIRS 0x14 39#define NMK_GPIO_DIRC 0x18 40#define NMK_GPIO_SLPC 0x1c 41#define NMK_GPIO_AFSLA 0x20 42#define NMK_GPIO_AFSLB 0x24 43 44#define NMK_GPIO_RIMSC 0x40 45#define NMK_GPIO_FIMSC 0x44 46#define NMK_GPIO_IS 0x48 47#define NMK_GPIO_IC 0x4c 48#define NMK_GPIO_RWIMSC 0x50 49#define NMK_GPIO_FWIMSC 0x54 50#define NMK_GPIO_WKS 0x58 51 52/* Alternate functions: function C is set in hw by setting both A and B */ 53#define NMK_GPIO_ALT_GPIO 0 54#define NMK_GPIO_ALT_A 1 55#define NMK_GPIO_ALT_B 2 56#define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B) 57 58/* Pull up/down values */ 59enum nmk_gpio_pull { 60 NMK_GPIO_PULL_NONE, 61 NMK_GPIO_PULL_UP, 62 NMK_GPIO_PULL_DOWN, 63}; 64 65/* Sleep mode */ 66enum nmk_gpio_slpm { 67 NMK_GPIO_SLPM_INPUT, 68 NMK_GPIO_SLPM_NOCHANGE, 69}; 70 71extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode); 72extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull); 73extern int nmk_gpio_set_mode(int gpio, int gpio_mode); 74extern int nmk_gpio_get_mode(int gpio); 75 76/* 77 * Platform data to register a block: only the initial gpio/irq number. 78 */ 79struct nmk_gpio_platform_data { 80 char *name; 81 int first_gpio; 82 int first_irq; 83}; 84 85#endif /* __ASM_PLAT_GPIO_H */ 86