commit 3a93f2a9f4d8f73d74c0e552feb68a10f778a219
author Mark Brown <broonie@opensource.wolfsonmicro.com> Wed Nov 10 14:38:29 2010 +0000
committer Liam Girdwood <lrg@slimlogic.co.uk> Wed Jan 12 14:32:59 2011 +0000
tree 8a9f503f2f061ad3fe9712b0986b0da346f4c8d2
parent 63cee946148821bca42be10130b061c2d0f5af7e

regulator: Report actual configured voltage to set_voltage()

Change the interface used by set_voltage() to report the selected value
to the regulator core in terms of a selector used by list_voltage().
This allows the regulator core to know the voltage that was chosen
without having to do an explict get_voltage(), which would be much more
expensive as it will generally access hardware.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

drivers/regulator/ab3100.c

diff --git a/drivers/regulator/ab3100.c b/drivers/regulator/ab3100.c
index b349266..ed6feaf 100644
--- a/drivers/regulator/ab3100.c
+++ b/drivers/regulator/ab3100.c
@@ -362,7 +362,8 @@
 }
 
 static int ab3100_set_voltage_regulator(struct regulator_dev *reg,
-					int min_uV, int max_uV)
+					int min_uV, int max_uV,
+					unsigned *selector)
 {
 	struct ab3100_regulator *abreg = reg->reg_data;
 	u8 regval;
@@ -373,6 +374,8 @@
 	if (bestindex < 0)
 		return bestindex;
 
+	*selector = bestindex;
+
 	err = abx500_get_register_interruptible(abreg->dev, 0,
 						abreg->regreg, &regval);
 	if (err) {