| Linus Walleij | 0f33286 | 2011-08-22 08:33:30 +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 | |
| 13 | #ifndef __PLAT_NOMADIK_GPIO |
| 14 | #define __PLAT_NOMADIK_GPIO |
| 15 | |
| 16 | /* |
| 17 | * "nmk_gpio" and "NMK_GPIO" stand for "Nomadik GPIO", leaving |
| 18 | * the "gpio" namespace for generic and cross-machine functions |
| 19 | */ |
| 20 | |
| 21 | /* Register in the logic block */ |
| 22 | #define NMK_GPIO_DAT 0x00 |
| 23 | #define NMK_GPIO_DATS 0x04 |
| 24 | #define NMK_GPIO_DATC 0x08 |
| 25 | #define NMK_GPIO_PDIS 0x0c |
| 26 | #define NMK_GPIO_DIR 0x10 |
| 27 | #define NMK_GPIO_DIRS 0x14 |
| 28 | #define NMK_GPIO_DIRC 0x18 |
| 29 | #define NMK_GPIO_SLPC 0x1c |
| 30 | #define NMK_GPIO_AFSLA 0x20 |
| 31 | #define NMK_GPIO_AFSLB 0x24 |
| Rabin Vincent | ebc6178 | 2011-09-28 15:49:11 +0530 | [diff] [blame] | 32 | #define NMK_GPIO_LOWEMI 0x28 |
| Linus Walleij | 0f33286 | 2011-08-22 08:33:30 +0100 | [diff] [blame] | 33 | |
| 34 | #define NMK_GPIO_RIMSC 0x40 |
| 35 | #define NMK_GPIO_FIMSC 0x44 |
| 36 | #define NMK_GPIO_IS 0x48 |
| 37 | #define NMK_GPIO_IC 0x4c |
| 38 | #define NMK_GPIO_RWIMSC 0x50 |
| 39 | #define NMK_GPIO_FWIMSC 0x54 |
| 40 | #define NMK_GPIO_WKS 0x58 |
| 41 | |
| 42 | /* Alternate functions: function C is set in hw by setting both A and B */ |
| 43 | #define NMK_GPIO_ALT_GPIO 0 |
| 44 | #define NMK_GPIO_ALT_A 1 |
| 45 | #define NMK_GPIO_ALT_B 2 |
| 46 | #define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B) |
| 47 | |
| 48 | /* Pull up/down values */ |
| 49 | enum nmk_gpio_pull { |
| 50 | NMK_GPIO_PULL_NONE, |
| 51 | NMK_GPIO_PULL_UP, |
| 52 | NMK_GPIO_PULL_DOWN, |
| 53 | }; |
| 54 | |
| 55 | /* Sleep mode */ |
| 56 | enum nmk_gpio_slpm { |
| 57 | NMK_GPIO_SLPM_INPUT, |
| 58 | NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT, |
| 59 | NMK_GPIO_SLPM_NOCHANGE, |
| 60 | NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE, |
| 61 | }; |
| 62 | |
| 63 | extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode); |
| 64 | extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull); |
| 65 | extern int nmk_gpio_set_mode(int gpio, int gpio_mode); |
| 66 | extern int nmk_gpio_get_mode(int gpio); |
| 67 | |
| 68 | extern void nmk_gpio_wakeups_suspend(void); |
| 69 | extern void nmk_gpio_wakeups_resume(void); |
| 70 | |
| Linus Torvalds | 41684f6 | 2011-10-29 07:27:45 -0700 | [diff] [blame] | 71 | extern void nmk_gpio_clocks_enable(void); |
| 72 | extern void nmk_gpio_clocks_disable(void); |
| 73 | |
| Linus Walleij | 0f33286 | 2011-08-22 08:33:30 +0100 | [diff] [blame] | 74 | extern void nmk_gpio_read_pull(int gpio_bank, u32 *pull_up); |
| 75 | |
| 76 | /* |
| 77 | * Platform data to register a block: only the initial gpio/irq number. |
| 78 | */ |
| 79 | struct nmk_gpio_platform_data { |
| 80 | char *name; |
| 81 | int first_gpio; |
| 82 | int first_irq; |
| 83 | int num_gpio; |
| 84 | u32 (*get_secondary_status)(unsigned int bank); |
| 85 | void (*set_ioforce)(bool enable); |
| 86 | bool supports_sleepmode; |
| 87 | }; |
| 88 | |
| 89 | #endif /* __PLAT_NOMADIK_GPIO */ |