linux-kernel - [PATCH 3/3] regulator: mt6397: Remove modeset_shift from struct mt6397_regulator

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Date:   Tue, 29 Jun 2021 21:05:03 +0800
From:   Axel Lin <axel.lin@...ics.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Hsin-Hsiung Wang <hsin-hsiung.wang@...iatek.com>,
        Henry Chen <henryc.chen@...iatek.com>,
        Flora Fu <flora.fu@...iatek.com>, Wen Su <wen.su@...iatek.com>,
        linux-mediatek@...ts.infradead.org,
        Liam Girdwood <lgirdwood@...il.com>,
        linux-kernel@...r.kernel.org, Axel Lin <axel.lin@...ics.com>
Subject: [PATCH 3/3] regulator: mt6397: Remove modeset_shift from struct mt6397_regulator_info

The shift setting can be calculated via the corresponding mask field,
so remove modeset_shift.

Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
 drivers/regulator/mt6397-regulator.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/regulator/mt6397-regulator.c b/drivers/regulator/mt6397-regulator.c
index 0a30df5e414f..b9bf7ade1f8a 100644
--- a/drivers/regulator/mt6397-regulator.c
+++ b/drivers/regulator/mt6397-regulator.c
@@ -32,7 +32,6 @@ struct mt6397_regulator_info {
 	u32 vselctrl_mask;
 	u32 modeset_reg;
 	u32 modeset_mask;
-	u32 modeset_shift;
 };
 
 #define MT6397_BUCK(match, vreg, min, max, step, volt_ranges, enreg,	\
@@ -61,7 +60,6 @@ struct mt6397_regulator_info {
 	.vselctrl_mask = BIT(1),					\
 	.modeset_reg = _modeset_reg,					\
 	.modeset_mask = BIT(_modeset_shift),				\
-	.modeset_shift = _modeset_shift					\
 }
 
 #define MT6397_LDO(match, vreg, ldo_volt_table, enreg, enbit, vosel,	\
@@ -175,11 +173,11 @@ static int mt6397_regulator_set_mode(struct regulator_dev *rdev,
 		goto err_mode;
 	}
 
-	dev_dbg(&rdev->dev, "mt6397 buck set_mode %#x, %#x, %#x, %#x\n",
-		info->modeset_reg, info->modeset_mask,
-		info->modeset_shift, val);
+	dev_dbg(&rdev->dev, "mt6397 buck set_mode %#x, %#x, %#x\n",
+		info->modeset_reg, info->modeset_mask, val);
+
+	val <<= ffs(info->modeset_mask) - 1;
 
-	val <<= info->modeset_shift;
 	ret = regmap_update_bits(rdev->regmap, info->modeset_reg,
 				 info->modeset_mask, val);
 err_mode:
@@ -204,7 +202,10 @@ static unsigned int mt6397_regulator_get_mode(struct regulator_dev *rdev)
 		return ret;
 	}
 
-	switch ((regval & info->modeset_mask) >> info->modeset_shift) {
+	regval &= info->modeset_mask;
+	regval >>= ffs(info->modeset_mask) - 1;
+
+	switch (regval) {
 	case MT6397_BUCK_MODE_AUTO:
 		return REGULATOR_MODE_NORMAL;
 	case MT6397_BUCK_MODE_FORCE_PWM:
-- 
2.25.1