upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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170 lines
6.0 KiB
170 lines
6.0 KiB
/*
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* Copyright (C) ST-Ericsson SA 2010
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*
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* Code ported from Nomadik GPIO driver in ST-Ericsson Linux kernel code.
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* The purpose is that GPIO config found in kernel should work by simply
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* copy-paste it to U-boot. Ported 2010 to U-boot by:
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* Author: Joakim Axelsson <joakim.axelsson AT stericsson.com>
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*
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* License terms: GNU General Public License, version 2
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* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
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*
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*
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* Based on arch/arm/mach-pxa/include/mach/mfp.h:
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* Copyright (C) 2007 Marvell International Ltd.
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* eric miao <eric.miao@marvell.com>
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*/
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#ifndef __DB8500_PINCFG_H
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#define __DB8500_PINCFG_H
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#include "db8500_gpio.h"
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/*
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* U-boot info:
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* SLPM (sleep mode) config will be ignored by U-boot but it is still
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* possible to configure it in order to keep cut-n-paste compability
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* with Linux kernel config.
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*
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* pin configurations are represented by 32-bit integers:
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*
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* bit 0.. 8 - Pin Number (512 Pins Maximum)
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* bit 9..10 - Alternate Function Selection
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* bit 11..12 - Pull up/down state
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* bit 13 - Sleep mode behaviour (not used in U-boot)
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* bit 14 - Direction
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* bit 15 - Value (if output)
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* bit 16..18 - SLPM pull up/down state (not used in U-boot)
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* bit 19..20 - SLPM direction (not used in U-boot)
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* bit 21..22 - SLPM Value (if output) (not used in U-boot)
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*
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* to facilitate the definition, the following macros are provided
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*
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* PIN_CFG_DEFAULT - default config (0):
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* pull up/down = disabled
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* sleep mode = input/wakeup
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* direction = input
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* value = low
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* SLPM direction = same as normal
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* SLPM pull = same as normal
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* SLPM value = same as normal
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*
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* PIN_CFG - default config with alternate function
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* PIN_CFG_PULL - default config with alternate function and pull up/down
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*/
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/* Sleep mode */
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enum db8500_gpio_slpm {
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DB8500_GPIO_SLPM_INPUT,
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DB8500_GPIO_SLPM_WAKEUP_ENABLE = DB8500_GPIO_SLPM_INPUT,
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DB8500_GPIO_SLPM_NOCHANGE,
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DB8500_GPIO_SLPM_WAKEUP_DISABLE = DB8500_GPIO_SLPM_NOCHANGE,
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};
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#define PIN_NUM_MASK 0x1ff
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#define PIN_NUM(x) ((x) & PIN_NUM_MASK)
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#define PIN_ALT_SHIFT 9
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#define PIN_ALT_MASK (0x3 << PIN_ALT_SHIFT)
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#define PIN_ALT(x) (((x) & PIN_ALT_MASK) >> PIN_ALT_SHIFT)
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#define PIN_GPIO (DB8500_GPIO_ALT_GPIO << PIN_ALT_SHIFT)
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#define PIN_ALT_A (DB8500_GPIO_ALT_A << PIN_ALT_SHIFT)
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#define PIN_ALT_B (DB8500_GPIO_ALT_B << PIN_ALT_SHIFT)
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#define PIN_ALT_C (DB8500_GPIO_ALT_C << PIN_ALT_SHIFT)
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#define PIN_PULL_SHIFT 11
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#define PIN_PULL_MASK (0x3 << PIN_PULL_SHIFT)
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#define PIN_PULL(x) (((x) & PIN_PULL_MASK) >> PIN_PULL_SHIFT)
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#define PIN_PULL_NONE (DB8500_GPIO_PULL_NONE << PIN_PULL_SHIFT)
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#define PIN_PULL_UP (DB8500_GPIO_PULL_UP << PIN_PULL_SHIFT)
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#define PIN_PULL_DOWN (DB8500_GPIO_PULL_DOWN << PIN_PULL_SHIFT)
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#define PIN_SLPM_SHIFT 13
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#define PIN_SLPM_MASK (0x1 << PIN_SLPM_SHIFT)
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#define PIN_SLPM(x) (((x) & PIN_SLPM_MASK) >> PIN_SLPM_SHIFT)
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#define PIN_SLPM_MAKE_INPUT (DB8500_GPIO_SLPM_INPUT << PIN_SLPM_SHIFT)
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#define PIN_SLPM_NOCHANGE (DB8500_GPIO_SLPM_NOCHANGE << PIN_SLPM_SHIFT)
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/* These two replace the above in DB8500v2+ */
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#define PIN_SLPM_WAKEUP_ENABLE \
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(DB8500_GPIO_SLPM_WAKEUP_ENABLE << PIN_SLPM_SHIFT)
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#define PIN_SLPM_WAKEUP_DISABLE \
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(DB8500_GPIO_SLPM_WAKEUP_DISABLE << PIN_SLPM_SHIFT)
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#define PIN_DIR_SHIFT 14
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#define PIN_DIR_MASK (0x1 << PIN_DIR_SHIFT)
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#define PIN_DIR(x) (((x) & PIN_DIR_MASK) >> PIN_DIR_SHIFT)
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#define PIN_DIR_INPUT (0 << PIN_DIR_SHIFT)
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#define PIN_DIR_OUTPUT (1 << PIN_DIR_SHIFT)
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#define PIN_VAL_SHIFT 15
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#define PIN_VAL_MASK (0x1 << PIN_VAL_SHIFT)
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#define PIN_VAL(x) (((x) & PIN_VAL_MASK) >> PIN_VAL_SHIFT)
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#define PIN_VAL_LOW (0 << PIN_VAL_SHIFT)
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#define PIN_VAL_HIGH (1 << PIN_VAL_SHIFT)
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#define PIN_SLPM_PULL_SHIFT 16
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#define PIN_SLPM_PULL_MASK (0x7 << PIN_SLPM_PULL_SHIFT)
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#define PIN_SLPM_PULL(x) \
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(((x) & PIN_SLPM_PULL_MASK) >> PIN_SLPM_PULL_SHIFT)
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#define PIN_SLPM_PULL_NONE \
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((1 + DB8500_GPIO_PULL_NONE) << PIN_SLPM_PULL_SHIFT)
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#define PIN_SLPM_PULL_UP \
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((1 + DB8500_GPIO_PULL_UP) << PIN_SLPM_PULL_SHIFT)
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#define PIN_SLPM_PULL_DOWN \
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((1 + DB8500_GPIO_PULL_DOWN) << PIN_SLPM_PULL_SHIFT)
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#define PIN_SLPM_DIR_SHIFT 19
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#define PIN_SLPM_DIR_MASK (0x3 << PIN_SLPM_DIR_SHIFT)
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#define PIN_SLPM_DIR(x) \
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(((x) & PIN_SLPM_DIR_MASK) >> PIN_SLPM_DIR_SHIFT)
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#define PIN_SLPM_DIR_INPUT ((1 + 0) << PIN_SLPM_DIR_SHIFT)
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#define PIN_SLPM_DIR_OUTPUT ((1 + 1) << PIN_SLPM_DIR_SHIFT)
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#define PIN_SLPM_VAL_SHIFT 21
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#define PIN_SLPM_VAL_MASK (0x3 << PIN_SLPM_VAL_SHIFT)
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#define PIN_SLPM_VAL(x) \
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(((x) & PIN_SLPM_VAL_MASK) >> PIN_SLPM_VAL_SHIFT)
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#define PIN_SLPM_VAL_LOW ((1 + 0) << PIN_SLPM_VAL_SHIFT)
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#define PIN_SLPM_VAL_HIGH ((1 + 1) << PIN_SLPM_VAL_SHIFT)
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/* Shortcuts. Use these instead of separate DIR, PULL, and VAL. */
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#define PIN_INPUT_PULLDOWN (PIN_DIR_INPUT | PIN_PULL_DOWN)
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#define PIN_INPUT_PULLUP (PIN_DIR_INPUT | PIN_PULL_UP)
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#define PIN_INPUT_NOPULL (PIN_DIR_INPUT | PIN_PULL_NONE)
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#define PIN_OUTPUT_LOW (PIN_DIR_OUTPUT | PIN_VAL_LOW)
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#define PIN_OUTPUT_HIGH (PIN_DIR_OUTPUT | PIN_VAL_HIGH)
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#define PIN_SLPM_INPUT_PULLDOWN (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_DOWN)
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#define PIN_SLPM_INPUT_PULLUP (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_UP)
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#define PIN_SLPM_INPUT_NOPULL (PIN_SLPM_DIR_INPUT | PIN_SLPM_PULL_NONE)
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#define PIN_SLPM_OUTPUT_LOW (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_LOW)
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#define PIN_SLPM_OUTPUT_HIGH (PIN_SLPM_DIR_OUTPUT | PIN_SLPM_VAL_HIGH)
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#define PIN_CFG_DEFAULT (0)
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#define PIN_CFG(num, alt) \
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(PIN_CFG_DEFAULT |\
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(PIN_NUM(num) | PIN_##alt))
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#define PIN_CFG_INPUT(num, alt, pull) \
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(PIN_CFG_DEFAULT |\
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(PIN_NUM(num) | PIN_##alt | PIN_INPUT_##pull))
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#define PIN_CFG_OUTPUT(num, alt, val) \
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(PIN_CFG_DEFAULT |\
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(PIN_NUM(num) | PIN_##alt | PIN_OUTPUT_##val))
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#define PIN_CFG_PULL(num, alt, pull) \
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((PIN_CFG_DEFAULT & ~PIN_PULL_MASK) |\
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(PIN_NUM(num) | PIN_##alt | PIN_PULL_##pull))
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/**
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* db8500_gpio_config_pins - configure several pins at once
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* @cfgs: array of pin configurations
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* @num: number of elments in the array
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*
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* Configures several GPIO pins.
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*/
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void db8500_gpio_config_pins(unsigned long *cfgs, size_t num);
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#endif
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