83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
165 lines
4.5 KiB
C
165 lines
4.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
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* <armlinux@phytec.de>
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* Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
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*/
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#ifndef __MACH_MXS_IOMUX_H__
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#define __MACH_MXS_IOMUX_H__
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#ifndef __ASSEMBLY__
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#include <asm/types.h>
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/*
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* IOMUX/PAD Bit field definitions
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*
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* PAD_BANK: 0..2 (3)
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* PAD_PIN: 3..7 (5)
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* PAD_MUXSEL: 8..9 (2)
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* PAD_MA: 10..11 (2)
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* PAD_MA_VALID: 12 (1)
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* PAD_VOL: 13 (1)
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* PAD_VOL_VALID: 14 (1)
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* PAD_PULL: 15 (1)
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* PAD_PULL_VALID: 16 (1)
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* RESERVED: 17..31 (15)
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*/
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typedef u32 iomux_cfg_t;
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#define MXS_PAD_BANK_SHIFT 0
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#define MXS_PAD_BANK_MASK ((iomux_cfg_t)0x7 << MXS_PAD_BANK_SHIFT)
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#define MXS_PAD_PIN_SHIFT 3
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#define MXS_PAD_PIN_MASK ((iomux_cfg_t)0x1f << MXS_PAD_PIN_SHIFT)
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#define MXS_PAD_MUXSEL_SHIFT 8
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#define MXS_PAD_MUXSEL_MASK ((iomux_cfg_t)0x3 << MXS_PAD_MUXSEL_SHIFT)
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#define MXS_PAD_MA_SHIFT 10
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#define MXS_PAD_MA_MASK ((iomux_cfg_t)0x3 << MXS_PAD_MA_SHIFT)
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#define MXS_PAD_MA_VALID_SHIFT 12
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#define MXS_PAD_MA_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_MA_VALID_SHIFT)
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#define MXS_PAD_VOL_SHIFT 13
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#define MXS_PAD_VOL_MASK ((iomux_cfg_t)0x1 << MXS_PAD_VOL_SHIFT)
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#define MXS_PAD_VOL_VALID_SHIFT 14
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#define MXS_PAD_VOL_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_VOL_VALID_SHIFT)
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#define MXS_PAD_PULL_SHIFT 15
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#define MXS_PAD_PULL_MASK ((iomux_cfg_t)0x1 << MXS_PAD_PULL_SHIFT)
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#define MXS_PAD_PULL_VALID_SHIFT 16
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#define MXS_PAD_PULL_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_PULL_VALID_SHIFT)
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#define PAD_MUXSEL_0 0
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#define PAD_MUXSEL_1 1
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#define PAD_MUXSEL_2 2
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#define PAD_MUXSEL_GPIO 3
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#define PAD_4MA 0
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#define PAD_8MA 1
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#define PAD_12MA 2
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#define PAD_16MA 3
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#define PAD_1V8 0
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#if defined(CONFIG_MX28)
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#define PAD_3V3 1
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#else
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#define PAD_3V3 0
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#endif
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#define PAD_NOPULL 0
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#define PAD_PULLUP 1
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#define MXS_PAD_4MA ((PAD_4MA << MXS_PAD_MA_SHIFT) | \
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MXS_PAD_MA_VALID_MASK)
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#define MXS_PAD_8MA ((PAD_8MA << MXS_PAD_MA_SHIFT) | \
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MXS_PAD_MA_VALID_MASK)
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#define MXS_PAD_12MA ((PAD_12MA << MXS_PAD_MA_SHIFT) | \
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MXS_PAD_MA_VALID_MASK)
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#define MXS_PAD_16MA ((PAD_16MA << MXS_PAD_MA_SHIFT) | \
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MXS_PAD_MA_VALID_MASK)
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#define MXS_PAD_1V8 ((PAD_1V8 << MXS_PAD_VOL_SHIFT) | \
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MXS_PAD_VOL_VALID_MASK)
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#define MXS_PAD_3V3 ((PAD_3V3 << MXS_PAD_VOL_SHIFT) | \
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MXS_PAD_VOL_VALID_MASK)
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#define MXS_PAD_NOPULL ((PAD_NOPULL << MXS_PAD_PULL_SHIFT) | \
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MXS_PAD_PULL_VALID_MASK)
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#define MXS_PAD_PULLUP ((PAD_PULLUP << MXS_PAD_PULL_SHIFT) | \
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MXS_PAD_PULL_VALID_MASK)
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/* generic pad control used in most cases */
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#define MXS_PAD_CTRL (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL)
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#define MXS_IOMUX_PAD(_bank, _pin, _muxsel, _ma, _vol, _pull) \
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(((iomux_cfg_t)(_bank) << MXS_PAD_BANK_SHIFT) | \
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((iomux_cfg_t)(_pin) << MXS_PAD_PIN_SHIFT) | \
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((iomux_cfg_t)(_muxsel) << MXS_PAD_MUXSEL_SHIFT) | \
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((iomux_cfg_t)(_ma) << MXS_PAD_MA_SHIFT) | \
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((iomux_cfg_t)(_vol) << MXS_PAD_VOL_SHIFT) | \
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((iomux_cfg_t)(_pull) << MXS_PAD_PULL_SHIFT))
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/*
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* A pad becomes naked, when none of mA, vol or pull
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* validity bits is set.
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*/
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#define MXS_IOMUX_PAD_NAKED(_bank, _pin, _muxsel) \
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MXS_IOMUX_PAD(_bank, _pin, _muxsel, 0, 0, 0)
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static inline unsigned int PAD_BANK(iomux_cfg_t pad)
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{
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return (pad & MXS_PAD_BANK_MASK) >> MXS_PAD_BANK_SHIFT;
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}
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static inline unsigned int PAD_PIN(iomux_cfg_t pad)
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{
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return (pad & MXS_PAD_PIN_MASK) >> MXS_PAD_PIN_SHIFT;
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}
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static inline unsigned int PAD_MUXSEL(iomux_cfg_t pad)
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{
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return (pad & MXS_PAD_MUXSEL_MASK) >> MXS_PAD_MUXSEL_SHIFT;
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}
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static inline unsigned int PAD_MA(iomux_cfg_t pad)
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{
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return (pad & MXS_PAD_MA_MASK) >> MXS_PAD_MA_SHIFT;
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}
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static inline unsigned int PAD_MA_VALID(iomux_cfg_t pad)
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{
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return (pad & MXS_PAD_MA_VALID_MASK) >> MXS_PAD_MA_VALID_SHIFT;
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}
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static inline unsigned int PAD_VOL(iomux_cfg_t pad)
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{
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return (pad & MXS_PAD_VOL_MASK) >> MXS_PAD_VOL_SHIFT;
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}
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static inline unsigned int PAD_VOL_VALID(iomux_cfg_t pad)
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{
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return (pad & MXS_PAD_VOL_VALID_MASK) >> MXS_PAD_VOL_VALID_SHIFT;
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}
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static inline unsigned int PAD_PULL(iomux_cfg_t pad)
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{
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return (pad & MXS_PAD_PULL_MASK) >> MXS_PAD_PULL_SHIFT;
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}
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static inline unsigned int PAD_PULL_VALID(iomux_cfg_t pad)
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{
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return (pad & MXS_PAD_PULL_VALID_MASK) >> MXS_PAD_PULL_VALID_SHIFT;
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}
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/*
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* configures a single pad in the iomuxer
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*/
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int mxs_iomux_setup_pad(iomux_cfg_t pad);
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/*
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* configures multiple pads
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* convenient way to call the above function with tables
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*/
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int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count);
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#endif /* __ASSEMBLY__ */
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#endif /* __MACH_MXS_IOMUX_H__*/
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