From: Axel Lin <axel.lin@gmail.com>
Date: Thu, 19 Jul 2012 07:10:31 +0000 (+0800)
Subject: regulator: mc13892: Simplify implementation of mc13892_sw_regulator_set_voltage_sel()
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~106^2^5~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8db98440facad7e3a194f21ce6069e04bff336c6;p=pandora-kernel.git

regulator: mc13892: Simplify implementation of mc13892_sw_regulator_set_voltage_sel()

Use mc13xxx_reg_rmw rather than a mc13xxx_reg_read and a mc13xxx_reg_write calls.

This logic to set MC13892_SWITCHERS0_SWxHI bit is pretty simple:

if (volt > 1375000)
        set MC13892_SWITCHERS0_SWxHI bit
else if (volt < 1100000)
        clear MC13892_SWITCHERS0_SWxHI bit
else
        leave MC13892_SWITCHERS0_SWxHI bit untouched

We already know the selector, so we don't need to calculate the selector again.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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