| /* |
| * Structures and registers for GPIO access in the Nomadik SoC |
| * |
| * Copyright (C) 2008 STMicroelectronics |
| * Author: Prafulla WADASKAR <prafulla.wadaskar@st.com> |
| * Copyright (C) 2009 Alessandro Rubini <rubini@unipv.it> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #ifndef __ASM_PLAT_GPIO_H |
| #define __ASM_PLAT_GPIO_H |
| |
| #include <asm-generic/gpio.h> |
| |
| /* |
| * These currently cause a function call to happen, they may be optimized |
| * if needed by adding cpu-specific defines to identify blocks |
| * (see mach-pxa/include/mach/gpio.h as an example using GPLR etc) |
| */ |
| #define gpio_get_value __gpio_get_value |
| #define gpio_set_value __gpio_set_value |
| #define gpio_cansleep __gpio_cansleep |
| #define gpio_to_irq __gpio_to_irq |
| |
| /* |
| * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving |
| * the "gpio" namespace for generic and cross-machine functions |
| */ |
| |
| /* Register in the logic block */ |
| #define NMK_GPIO_DAT 0x00 |
| #define NMK_GPIO_DATS 0x04 |
| #define NMK_GPIO_DATC 0x08 |
| #define NMK_GPIO_PDIS 0x0c |
| #define NMK_GPIO_DIR 0x10 |
| #define NMK_GPIO_DIRS 0x14 |
| #define NMK_GPIO_DIRC 0x18 |
| #define NMK_GPIO_SLPC 0x1c |
| #define NMK_GPIO_AFSLA 0x20 |
| #define NMK_GPIO_AFSLB 0x24 |
| |
| #define NMK_GPIO_RIMSC 0x40 |
| #define NMK_GPIO_FIMSC 0x44 |
| #define NMK_GPIO_IS 0x48 |
| #define NMK_GPIO_IC 0x4c |
| #define NMK_GPIO_RWIMSC 0x50 |
| #define NMK_GPIO_FWIMSC 0x54 |
| #define NMK_GPIO_WKS 0x58 |
| |
| /* Alternate functions: function C is set in hw by setting both A and B */ |
| #define NMK_GPIO_ALT_GPIO 0 |
| #define NMK_GPIO_ALT_A 1 |
| #define NMK_GPIO_ALT_B 2 |
| #define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B) |
| |
| /* Pull up/down values */ |
| enum nmk_gpio_pull { |
| NMK_GPIO_PULL_NONE, |
| NMK_GPIO_PULL_UP, |
| NMK_GPIO_PULL_DOWN, |
| }; |
| |
| /* Sleep mode */ |
| enum nmk_gpio_slpm { |
| NMK_GPIO_SLPM_INPUT, |
| NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT, |
| NMK_GPIO_SLPM_NOCHANGE, |
| NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE, |
| }; |
| |
| extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode); |
| extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull); |
| extern int nmk_gpio_set_mode(int gpio, int gpio_mode); |
| extern int nmk_gpio_get_mode(int gpio); |
| |
| /* |
| * Platform data to register a block: only the initial gpio/irq number. |
| */ |
| struct nmk_gpio_platform_data { |
| char *name; |
| int first_gpio; |
| int first_irq; |
| }; |
| |
| #endif /* __ASM_PLAT_GPIO_H */ |
