47 lines
897 B
C
47 lines
897 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2021 MediaTek Inc.
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*
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* Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
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*/
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#ifndef __PHY_MTK_H__
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#define __PHY_MTK_H__
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#include <linux/bitfield.h>
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#include <linux/io.h>
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static inline void mtk_phy_clear_bits(void __iomem *reg, u32 bits)
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{
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u32 tmp = readl(reg);
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tmp &= ~bits;
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writel(tmp, reg);
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}
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static inline void mtk_phy_set_bits(void __iomem *reg, u32 bits)
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{
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u32 tmp = readl(reg);
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tmp |= bits;
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writel(tmp, reg);
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}
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static inline void mtk_phy_update_bits(void __iomem *reg, u32 mask, u32 val)
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{
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u32 tmp = readl(reg);
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tmp &= ~mask;
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tmp |= val & mask;
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writel(tmp, reg);
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}
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/* field @mask shall be constant and continuous */
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#define mtk_phy_update_field(reg, mask, val) \
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({ \
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BUILD_BUG_ON_MSG(!__builtin_constant_p(mask), "mask is not constant"); \
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mtk_phy_update_bits(reg, mask, FIELD_PREP(mask, val)); \
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})
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#endif
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