From 0266e49b3fd37065f9f90856c75f442c020bd96e Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Thu, 15 Dec 2011 22:28:24 +0000 Subject: [PATCH] platform-x86: intel_mid_thermal: turn off thermistor voltage by default Instead of complaining that the voltage is on, we can just ask the MSIC to turn the voltage off. This should save some power. Voltage for thermistors is turned on when ADC conversion is initiated. Signed-off-by: Mika Westerberg Signed-off-by: Kirill A. Shutemov Signed-off-by: Alan Cox Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_mid_thermal.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/intel_mid_thermal.c b/drivers/platform/x86/intel_mid_thermal.c index b07f93d64a91..acd7d2d3d912 100644 --- a/drivers/platform/x86/intel_mid_thermal.c +++ b/drivers/platform/x86/intel_mid_thermal.c @@ -360,8 +360,10 @@ static int mid_initialize_adc(struct device *dev) if (ret) return ret; - if (data & MSIC_ADCTHERM_MASK) - dev_warn(dev, "ADCTHERM already set"); + data &= ~MSIC_ADCTHERM_MASK; + ret = intel_msic_reg_write(INTEL_MSIC_ADC1CNTL3, data); + if (ret) + return ret; /* Index of the first channel in which the stop bit is set */ channel_index = find_free_channel();