x86/mid/thermal: Turn off thermistor
Commit-ID: 1b7ccabcc372152d1492241610e52b8ea14b0968 Gitweb: http://git.kernel.org/tip/1b7ccabcc372152d1492241610e52b8ea14b0968 Author: Mika Westerberg <[email protected]> AuthorDate: Mon, 5 Mar 2012 15:01:04 -0800 Committer: Ingo Molnar <[email protected]> CommitDate: Tue, 6 Mar 2012 09:01:26 +0100
x86/mid/thermal: Turn off thermistor
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 <[email protected]>
Signed-off-by Kirill A. Shutemov <[email protected]>
Signed-off-by Alan Cox <[email protected]>
Acked-by Durgadoss R <[email protected]>
Acked-by H. Peter Anvin <[email protected]>
Cc Matthew Garrett <[email protected]>
Signed-off-by Andrew Morton <[email protected]>
Signed-off-by Ingo Molnar <[email protected]>
--- drivers/platform/x86/intel_mid_thermal.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-)
drivers/platform/x86/intel_mid_thermal.c +4 -2
@@ -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 ();