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49094d9286
Remove the temporary @mask_, this may cause build warning when use clang
compiler for powerpc, but can't reproduce it when compile for arm64.
the build warning is caused by:
"warning: result of comparison of constant 18446744073709551615 with
expression of type (aka 'unsigned long') is always false
[-Wtautological-constant-out-of-range-compare]"
More information provided in below lore link.
After removing @mask_, there is a "CHECK:MACRO_ARG_REUSE" when run
checkpatch.pl, but due to @mask is constant, no reuse problem will happen.
Link: https://lore.kernel.org/lkml/202212160357.jJuesD8n-lkp@intel.com/t/
Fixes: 84513eccd6 ("phy: mediatek: fix build warning of FIELD_PREP()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230118084343.26913-1-chunfeng.yun@mediatek.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
46 lines
897 B
C
46 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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