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 <mika.westerberg@linux.intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
diff --git a/drivers/platform/x86/intel_mid_thermal.c b/drivers/platform/x86/intel_mid_thermal.c
index b07f93d..acd7d2d 100644
--- a/drivers/platform/x86/intel_mid_thermal.c
+++ b/drivers/platform/x86/intel_mid_thermal.c
@@ -360,8 +360,10 @@
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();