Re: [PATCH 01/18] phy: mediatek: add a new helper to update bitfield

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Il 20/09/22 11:00, Chunfeng Yun ha scritto:
Due to FIELD_PREP() macro can be used to prepare a bitfield value,
local ones can be remove; add the new helper to make bitfield update
easier.

Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
---
  drivers/phy/mediatek/phy-mtk-io.h | 7 +++++++
  1 file changed, 7 insertions(+)

diff --git a/drivers/phy/mediatek/phy-mtk-io.h b/drivers/phy/mediatek/phy-mtk-io.h
index 500fcdab165d..a723d4afc9b4 100644
--- a/drivers/phy/mediatek/phy-mtk-io.h
+++ b/drivers/phy/mediatek/phy-mtk-io.h
@@ -8,6 +8,7 @@
  #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)
@@ -35,4 +36,10 @@ static inline void mtk_phy_update_bits(void __iomem *reg, u32 mask, u32 val)
  	writel(tmp, reg);
  }
+/* field @mask should be constant and continuous */

"Field @mask shall be [...]"
             ^^^^^

+static inline void mtk_phy_update_field(void __iomem *reg, u32 mask, u32 val)

...so, (void __iomem *reg, const u32 mask, u32 val)

+{
+	mtk_phy_update_bits(reg, mask, FIELD_PREP(mask, val));
+}
+
  #endif





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