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

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Message-ID: <20220920090038.15133-2-chunfeng.yun@mediatek.com>
Date:   Tue, 20 Sep 2022 17:00:21 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Vinod Koul <vkoul@...nel.org>
CC:     Philipp Zabel <p.zabel@...gutronix.de>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <dri-devel@...ts.freedesktop.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-phy@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        Jitao Shi <jitao.shi@...iatek.com>,
        Stanley Chu <stanley.chu@...iatek.com>
Subject: [PATCH 01/18] phy: mediatek: add a new helper to update bitfield

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@...iatek.com>
---
 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 */
+static inline void mtk_phy_update_field(void __iomem *reg, u32 mask, u32 val)
+{
+	mtk_phy_update_bits(reg, mask, FIELD_PREP(mask, val));
+}
+
 #endif
-- 
2.18.0