Commit 0266e49b authored Dec 15, 2011 by Mika Westerberg Committed by Matthew Garrett Mar 20, 2012

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>

parent 420138a7

drivers/platform/x86/intel_mid_thermal.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -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();