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/*
* 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 <joakim.axelsson AT stericsson.com>
*
* License terms: GNU General Public License, version 2
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
*
*
* Based on arch/arm/mach-pxa/include/mach/mfp.h:
* Copyright (C) 2007 Marvell International Ltd.
* eric miao <eric.miao@marvell.com>
*/
#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
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