1/* 2 * Copyright (C) ST-Ericsson SA 2010 3 * 4 * License terms: GNU General Public License, version 2 5 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson 6 * 7 * Based on arch/arm/mach-pxa/include/mach/mfp.h: 8 * Copyright (C) 2007 Marvell International Ltd. 9 * eric miao <eric.miao@marvell.com> 10 */ 11 12#ifndef __PLAT_PINCFG_H 13#define __PLAT_PINCFG_H 14 15/* 16 * pin configurations are represented by 32-bit integers: 17 * 18 * bit 0.. 8 - Pin Number (512 Pins Maximum) 19 * bit 9..10 - Alternate Function Selection 20 * bit 11..12 - Pull up/down state 21 * bit 13 - Sleep mode behaviour 22 * 23 * to facilitate the definition, the following macros are provided 24 * 25 * PIN_CFG_DEFAULT - default config (0): 26 * pull up/down = disabled 27 * sleep mode = input 28 * 29 * PIN_CFG - default config with alternate function 30 * PIN_CFG_PULL - default config with alternate function and pull up/down 31 */ 32 33typedef unsigned long pin_cfg_t; 34 35#define PIN_NUM_MASK 0x1ff 36#define PIN_NUM(x) ((x) & PIN_NUM_MASK) 37 38#define PIN_ALT_SHIFT 9 39#define PIN_ALT_MASK (0x3 << PIN_ALT_SHIFT) 40#define PIN_ALT(x) (((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT) 41#define PIN_GPIO (NMK_GPIO_ALT_GPIO << PIN_ALT_SHIFT) 42#define PIN_ALT_A (NMK_GPIO_ALT_A << PIN_ALT_SHIFT) 43#define PIN_ALT_B (NMK_GPIO_ALT_B << PIN_ALT_SHIFT) 44#define PIN_ALT_C (NMK_GPIO_ALT_C << PIN_ALT_SHIFT) 45 46#define PIN_PULL_SHIFT 11 47#define PIN_PULL_MASK (0x3 << PIN_PULL_SHIFT) 48#define PIN_PULL(x) (((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT) 49#define PIN_PULL_NONE (NMK_GPIO_PULL_NONE << PIN_PULL_SHIFT) 50#define PIN_PULL_UP (NMK_GPIO_PULL_UP << PIN_PULL_SHIFT) 51#define PIN_PULL_DOWN (NMK_GPIO_PULL_DOWN << PIN_PULL_SHIFT) 52 53#define PIN_SLPM_SHIFT 13 54#define PIN_SLPM_MASK (0x1 << PIN_SLPM_SHIFT) 55#define PIN_SLPM(x) (((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT) 56#define PIN_SLPM_INPUT (NMK_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT) 57#define PIN_SLPM_NOCHANGE (NMK_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT) 58 59#define PIN_CFG_DEFAULT (PIN_PULL_NONE | PIN_SLPM_INPUT) 60 61#define PIN_CFG(num, alt) \ 62 (PIN_CFG_DEFAULT |\ 63 (PIN_NUM(num) | PIN_##alt)) 64 65#define PIN_CFG_PULL(num, alt, pull) \ 66 ((PIN_CFG_DEFAULT & ~PIN_PULL_MASK) |\ 67 (PIN_NUM(num) | PIN_##alt | PIN_PULL_##pull)) 68 69extern int nmk_config_pin(pin_cfg_t cfg); 70extern int nmk_config_pins(pin_cfg_t *cfgs, int num); 71 72#endif 73