/* * Copyright (C) ST-Ericsson SA 2010 * * Code ported from Nomadik GPIO driver in ST-Ericsson Linux kernel code. * The purpose is that GPIO config found in kernel should work by simply * copy-paste it to U-boot. Ported 2010 to U-boot by: * Author: Joakim Axelsson * * License terms: GNU General Public License, version 2 * Author: Rabin Vincent for ST-Ericsson * * * Based on arch/arm/mach-pxa/include/mach/mfp.h: * Copyright (C) 2007 Marvell International Ltd. * eric miao */ #ifndef __DB8500_PINCFG_H #define __DB8500_PINCFG_H #include "db8500_gpio.h" /* * U-boot info: * SLPM (sleep mode) config will be ignored by U-boot but it is still * possible to configure it in order to keep cut-n-paste compability * with Linux kernel config. * * pin configurations are represented by 32-bit integers: * * bit 0.. 8 - Pin Number (512 Pins Maximum) * bit 9..10 - Alternate Function Selection * bit 11..12 - Pull up/down state * bit 13 - Sleep mode behaviour (not used in U-boot) * bit 14 - Direction * bit 15 - Value (if output) * bit 16..18 - SLPM pull up/down state (not used in U-boot) * bit 19..20 - SLPM direction (not used in U-boot) * bit 21..22 - SLPM Value (if output) (not used in U-boot) * * to facilitate the definition, the following macros are provided * * PIN_CFG_DEFAULT - default config (0): * pull up/down = disabled * sleep mode = input/wakeup * direction = input * value = low * SLPM direction = same as normal * SLPM pull = same as normal * SLPM value = same as normal * * PIN_CFG - default config with alternate function * PIN_CFG_PULL - default config with alternate function and pull up/down */ typedef unsigned long pin_cfg_t; /* Sleep mode */ enum db8500_gpio_slpm { DB8500_GPIO_SLPM_INPUT, DB8500_GPIO_SLPM_WAKEUP_ENABLE = DB8500_GPIO_SLPM_INPUT, DB8500_GPIO_SLPM_NOCHANGE, DB8500_GPIO_SLPM_WAKEUP_DISABLE = DB8500_GPIO_SLPM_NOCHANGE, }; #define PIN_NUM_MASK 0x1ff #define PIN_NUM(x) ((x) & PIN_NUM_MASK) #define PIN_ALT_SHIFT 9 #define PIN_ALT_MASK (0x3 << PIN_ALT_SHIFT) #define PIN_ALT(x) (((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT) #define PIN_GPIO (DB8500_GPIO_ALT_GPIO << PIN_ALT_SHIFT) #define PIN_ALT_A (DB8500_GPIO_ALT_A << PIN_ALT_SHIFT) #define PIN_ALT_B (DB8500_GPIO_ALT_B << PIN_ALT_SHIFT) #define PIN_ALT_C (DB8500_GPIO_ALT_C << PIN_ALT_SHIFT) #define PIN_PULL_SHIFT 11 #define PIN_PULL_MASK (0x3 << PIN_PULL_SHIFT) #define PIN_PULL(x) (((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT) #define PIN_PULL_NONE (DB8500_GPIO_PULL_NONE << PIN_PULL_SHIFT) #define PIN_PULL_UP (DB8500_GPIO_PULL_UP << PIN_PULL_SHIFT) #define PIN_PULL_DOWN (DB8500_GPIO_PULL_DOWN << PIN_PULL_SHIFT) #define PIN_SLPM_SHIFT 13 #define PIN_SLPM_MASK (0x1 << PIN_SLPM_SHIFT) #define PIN_SLPM(x) (((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT) #define PIN_SLPM_MAKE_INPUT (DB8500_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT) #define PIN_SLPM_NOCHANGE (DB8500_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT) /* These two replace the above in DB8500v2+ */ #define PIN_SLPM_WAKEUP_ENABLE \ (DB8500_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT) #define PIN_SLPM_WAKEUP_DISABLE \ (DB8500_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT) #define PIN_DIR_SHIFT 14 #define PIN_DIR_MASK (0x1 << PIN_DIR_SHIFT) #define PIN_DIR(x) (((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT) #define PIN_DIR_INPUT (0 << PIN_DIR_SHIFT) #define PIN_DIR_OUTPUT (1 << PIN_DIR_SHIFT) #define PIN_VAL_SHIFT 15 #define PIN_VAL_MASK (0x1 << PIN_VAL_SHIFT) #define PIN_VAL(x) (((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT) #define PIN_VAL_LOW (0 << PIN_VAL_SHIFT) #define PIN_VAL_HIGH (1 << PIN_VAL_SHIFT) #define PIN_SLPM_PULL_SHIFT 16 #define PIN_SLPM_PULL_MASK (0x7 << PIN_SLPM_PULL_SHIFT) #define PIN_SLPM_PULL(x) \ (((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT) #define PIN_SLPM_PULL_NONE \ ((1 + DB8500_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT) #define PIN_SLPM_PULL_UP \ ((1 + DB8500_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT) #define PIN_SLPM_PULL_DOWN \ ((1 + DB8500_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT) #define PIN_SLPM_DIR_SHIFT 19 #define PIN_SLPM_DIR_MASK (0x3 << PIN_SLPM_DIR_SHIFT) #define PIN_SLPM_DIR(x) \ (((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT) #define PIN_SLPM_DIR_INPUT ((1 + 0) << PIN_SLPM_DIR_SHIFT) #define PIN_SLPM_DIR_OUTPUT ((1 + 1) << PIN_SLPM_DIR_SHIFT) #define PIN_SLPM_VAL_SHIFT 21 #define PIN_SLPM_VAL_MASK (0x3 << PIN_SLPM_VAL_SHIFT) #define PIN_SLPM_VAL(x) \ (((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT) #define PIN_SLPM_VAL_LOW ((1 + 0) << PIN_SLPM_VAL_SHIFT) #define PIN_SLPM_VAL_HIGH ((1 + 1) << PIN_SLPM_VAL_SHIFT) /* Shortcuts. Use these instead of separate DIR, PULL, and VAL. */ #define PIN_INPUT_PULLDOWN (PIN_DIR_INPUT | PIN_PULL_DOWN) #define PIN_INPUT_PULLUP (PIN_DIR_INPUT | PIN_PULL_UP) #define PIN_INPUT_NOPULL (PIN_DIR_INPUT | PIN_PULL_NONE) #define PIN_OUTPUT_LOW (PIN_DIR_OUTPUT | PIN_VAL_LOW) #define PIN_OUTPUT_HIGH (PIN_DIR_OUTPUT | PIN_VAL_HIGH) #define PIN_SLPM_INPUT_PULLDOWN (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN) #define PIN_SLPM_INPUT_PULLUP (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP) #define PIN_SLPM_INPUT_NOPULL (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE) #define PIN_SLPM_OUTPUT_LOW (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW) #define PIN_SLPM_OUTPUT_HIGH (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH) #define PIN_CFG_DEFAULT (0) #define PIN_CFG(num, alt) \ (PIN_CFG_DEFAULT |\ (PIN_NUM(num) | PIN_##alt)) #define PIN_CFG_INPUT(num, alt, pull) \ (PIN_CFG_DEFAULT |\ (PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull)) #define PIN_CFG_OUTPUT(num, alt, val) \ (PIN_CFG_DEFAULT |\ (PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val)) #define PIN_CFG_PULL(num, alt, pull) \ ((PIN_CFG_DEFAULT & ~PIN_PULL_MASK) |\ (PIN_NUM(num) | PIN_##alt | PIN_PULL_##pull)) /** * db8500_gpio_config_pins - configure several pins at once * @cfgs: array of pin configurations * @num: number of elments in the array * * Configures several GPIO pins. */ void db8500_gpio_config_pins(pin_cfg_t *cfgs, size_t num); #endif