[PATCH v2 3/5] phy: mediatek: add helpers to update bits of registers
From: Chunfeng Yun <chunfeng.yun@mediatek.com>
Date: 2021-12-18 08:28:12
Also in:
linux-arm-kernel, linux-devicetree, linux-mediatek, lkml
Subsystem:
arm/mediatek usb3 phy driver, generic phy framework, the rest · Maintainers:
Chunfeng Yun, Vinod Koul, Linus Torvalds
Add three helpers mtk_phy_clear/set/update_bits() for registers operation
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v2: new patch, add register access helpers,
Add updatel() macro suggested by Vinod, here add more ones instead.
---
drivers/phy/mediatek/phy-mtk-io.h | 38 +++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 drivers/phy/mediatek/phy-mtk-io.h
diff --git a/drivers/phy/mediatek/phy-mtk-io.h b/drivers/phy/mediatek/phy-mtk-io.h
new file mode 100644
index 000000000000..500fcdab165d
--- /dev/null
+++ b/drivers/phy/mediatek/phy-mtk-io.h@@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2021 MediaTek Inc. + * + * Author: Chunfeng Yun <chunfeng.yun@mediatek.com> + */ + +#ifndef __PHY_MTK_H__ +#define __PHY_MTK_H__ + +#include <linux/io.h> + +static inline void mtk_phy_clear_bits(void __iomem *reg, u32 bits) +{ + u32 tmp = readl(reg); + + tmp &= ~bits; + writel(tmp, reg); +} + +static inline void mtk_phy_set_bits(void __iomem *reg, u32 bits) +{ + u32 tmp = readl(reg); + + tmp |= bits; + writel(tmp, reg); +} + +static inline void mtk_phy_update_bits(void __iomem *reg, u32 mask, u32 val) +{ + u32 tmp = readl(reg); + + tmp &= ~mask; + tmp |= val & mask; + writel(tmp, reg); +} + +#endif
--
2.18.0
--
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