linux-kernel - [PATCH] regulator: ab8500: provide per-regulator shift

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Message-ID: <1345480781-16754-1-git-send-email-linus.walleij@stericsson.com>
Date:	Mon, 20 Aug 2012 18:39:41 +0200
From:	Linus Walleij <linus.walleij@...ricsson.com>
To:	Liam Girdwood <lrg@...mlogic.co.uk>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	<linux-kernel@...r.kernel.org>
Cc:	Mattias Wallin <mattias.wallin@...ricsson.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Axel Lin <axel.lin@...il.com>
Subject: [PATCH] regulator: ab8500: provide per-regulator shift

From: Linus Walleij <linus.walleij@...aro.org>

This encodes the voltage shifts (the number of bits to shift
the register to get to the selector) into the regulator info.
We have several new variants of the AB8500 so this varies a
lot.

Cc: Axel Lin <axel.lin@...il.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/regulator/ab8500.c | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 8807166..c659127 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -195,17 +195,14 @@ static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
 	}
 
 	dev_vdbg(rdev_get_dev(rdev),
-		"%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
-		" 0x%x\n",
-		info->desc.name, info->voltage_bank, info->voltage_reg,
-		info->voltage_mask, regval);
+		"%s-get_voltage (bank, reg, mask, shift, value): "
+		"0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n",
+		info->desc.name, info->voltage_bank,
+		info->voltage_reg, info->voltage_mask,
+		info->voltage_shift, regval);
 
-	/* vintcore has a different layout */
 	val = regval & info->voltage_mask;
-	if (info->desc.id == AB8500_LDO_INTCORE)
-		return val >> 0x3;
-	else
-		return val;
+	return val >> info->voltage_shift;
 }
 
 static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
@@ -221,7 +218,7 @@ static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
 	}
 
 	/* set the registers for the request */
-	regval = (u8)selector;
+	regval = (u8)selector << info->voltage_shift;
 	ret = abx500_mask_and_set_register_interruptible(info->dev,
 			info->voltage_bank, info->voltage_reg,
 			info->voltage_mask, regval);
-- 
1.7.11.3

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