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 32 33 #define NMK_GPIO_RIMSC 0x40 34 #define NMK_GPIO_FIMSC 0x44 35 #define NMK_GPIO_IS 0x48 36 #define NMK_GPIO_IC 0x4c 37 #define NMK_GPIO_RWIMSC 0x50 38 #define NMK_GPIO_FWIMSC 0x54 39 #define NMK_GPIO_WKS 0x58 40 41 /* Alternate functions: function C is set in hw by setting both A and B */ 42 #define NMK_GPIO_ALT_GPIO 0 43 #define NMK_GPIO_ALT_A 1 44 #define NMK_GPIO_ALT_B 2 45 #define NMK_GPIO_ALT_C (NMK_GPIO_ALT_A | NMK_GPIO_ALT_B) 46 47 /* Pull up/down values */ 48 enum nmk_gpio_pull { 49 NMK_GPIO_PULL_NONE, 50 NMK_GPIO_PULL_UP, 51 NMK_GPIO_PULL_DOWN, 52 }; 53 54 /* Sleep mode */ 55 enum nmk_gpio_slpm { 56 NMK_GPIO_SLPM_INPUT, 57 NMK_GPIO_SLPM_WAKEUP_ENABLE = NMK_GPIO_SLPM_INPUT, 58 NMK_GPIO_SLPM_NOCHANGE, 59 NMK_GPIO_SLPM_WAKEUP_DISABLE = NMK_GPIO_SLPM_NOCHANGE, 60 }; 61 62 extern int nmk_gpio_set_slpm(int gpio, enum nmk_gpio_slpm mode); 63 extern int nmk_gpio_set_pull(int gpio, enum nmk_gpio_pull pull); 64 extern int nmk_gpio_set_mode(int gpio, int gpio_mode); 65 extern int nmk_gpio_get_mode(int gpio); 66 67 extern void nmk_gpio_wakeups_suspend(void); 68 extern void nmk_gpio_wakeups_resume(void); 69 70 extern void nmk_gpio_clocks_enable(void); 71 extern void nmk_gpio_clocks_disable(void); 72 73 extern void nmk_gpio_read_pull(int gpio_bank, u32 *pull_up); 74 75 /* 76 * Platform data to register a block: only the initial gpio/irq number. 77 */ 78 struct nmk_gpio_platform_data { 79 char *name; 80 int first_gpio; 81 int first_irq; 82 int num_gpio; 83 u32 (*get_secondary_status)(unsigned int bank); 84 void (*set_ioforce)(bool enable); 85 bool supports_sleepmode; 86 }; 87 88 #endif /* __PLAT_NOMADIK_GPIO */ 89