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Commit 8236ca2a authored by Siddartha Mohanadoss's avatar Siddartha Mohanadoss
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hwmon: qpnp-adc-common: Fix negative temperature readings 



Incorrect readings are seen during negative temperature range
on CHG_TEMP VADC channel. Fix scaling the temperature
using the correct cast type.

Change-Id: I0fb46280354d37969a66ac9ac03856270b8e6ad6
Signed-off-by: default avatarSiddartha Mohanadoss <smohanad@codeaurora.org>
parent ac6766f8

drivers/hwmon/qpnp-adc-common.c

+6 −3
Original line number Diff line number Diff line
@@ -1589,10 +1589,13 @@ int32_t qpnp_adc_scale_pmi_chg_temp(struct qpnp_vadc_chip *vadc, 


	pr_debug("raw_code:%x, v_adc:%lld\n", adc_code,

						adc_chan_result->physical);

	adc_chan_result->physical = ((PMI_CHG_SCALE_1) *

	adc_chan_result->physical = (int64_t) ((PMI_CHG_SCALE_1) *

					(adc_chan_result->physical * 2));

	adc_chan_result->physical += PMI_CHG_SCALE_2;

	do_div(adc_chan_result->physical, 1000000);

	adc_chan_result->physical = (int64_t) (adc_chan_result->physical +

							PMI_CHG_SCALE_2);

	adc_chan_result->physical = (int64_t) adc_chan_result->physical;

	adc_chan_result->physical = div64_s64(adc_chan_result->physical,

								1000000);



	return 0;

}