Commit 1b7ccabc authored Mar 05, 2012 by Mika Westerberg Committed by Ingo Molnar Mar 06, 2012

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 <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>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-85zdo06yve1o27jpwc74gzng@git.kernel.org


Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 63483070

drivers/platform/x86/intel_mid_thermal.c

+4 −2

Original line number	Original line	Diff line number	Diff line
	@@ -360,8 +360,10 @@ static int mid_initialize_adc(struct device *dev)
	if (ret)		if (ret)
	return ret;		return ret;

	if (data & MSIC_ADCTHERM_MASK)		data &= ~MSIC_ADCTHERM_MASK;
	dev_warn(dev, "ADCTHERM already set");		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 */		/* Index of the first channel in which the stop bit is set */
	channel_index = find_free_channel();		channel_index = find_free_channel();