diff options
Diffstat (limited to 'drivers/phy/mediatek/phy-mtk-io.h')
| -rw-r--r-- | drivers/phy/mediatek/phy-mtk-io.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/phy/mediatek/phy-mtk-io.h b/drivers/phy/mediatek/phy-mtk-io.h new file mode 100644 index 0000000000..58f06db822 --- /dev/null +++ b/drivers/phy/mediatek/phy-mtk-io.h @@ -0,0 +1,46 @@ +/* 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/bitfield.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); +} + +/* field @mask shall be constant and continuous */ +#define mtk_phy_update_field(reg, mask, val) \ +({ \ + BUILD_BUG_ON_MSG(!__builtin_constant_p(mask), "mask is not constant"); \ + mtk_phy_update_bits(reg, mask, FIELD_PREP(mask, val)); \ +}) + +#endif |