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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/phy/mediatek/phy-mtk-io.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/phy/mediatek/phy-mtk-io.h')
-rw-r--r--drivers/phy/mediatek/phy-mtk-io.h46
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