| Alessandro Rubini | 2ec1d35 | 2009-07-02 15:29:12 +0100 | [diff] [blame] | 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_ARCH_GPIO_H |
| 13 | #define __ASM_ARCH_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 | extern int nmk_gpio_set_mode(int gpio, int gpio_mode); |
| 59 | extern int nmk_gpio_get_mode(int gpio); |
| 60 | |
| 61 | /* |
| 62 | * Platform data to register a block: only the initial gpio/irq number. |
| 63 | */ |
| 64 | struct nmk_gpio_platform_data { |
| 65 | char *name; |
| 66 | int first_gpio; |
| 67 | int first_irq; |
| 68 | int parent_irq; |
| 69 | }; |
| 70 | |
| 71 | #endif /* __ASM_ARCH_GPIO_H */ |