Merge "hwmon: qpnp-adc-voltage: Add temperature compensation for PM8909" (c5e3e407) · Commits · e / devices / android_kernel_sony_msm8994

drivers/hwmon/qpnp-adc-voltage.c

+22 −1

Original line number	Diff line number	Diff line
		/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -701,6 +701,8 @@ static int32_t qpnp_vadc_version_check(struct qpnp_vadc_chip *dev)
		#define QPNP_VBAT_COEFF_48 2190
		#define QPNP_VBAT_COEFF_49 4180
		#define QPNP_VBAT_COEFF_50 27800000
		#define QPNP_VBAT_COEFF_51 5110
		#define QPNP_VBAT_COEFF_52 34444000

		static int32_t qpnp_ocv_comp(int64_t *result,
		struct qpnp_vadc_chip *vadc, int64_t die_temp)
		@@ -873,6 +875,13 @@ static int32_t qpnp_ocv_comp(int64_t *result,
		break;
		}
		break;
		case QPNP_REV_ID_8909_1_1:
		switch (vadc->id) {
		case COMP_ID_SMIC:
		temp_var = (QPNP_VBAT_COEFF_52);
		break;
		}
		break;
		default:
		temp_var = 0;
		break;
		@@ -1056,6 +1065,18 @@ static int32_t qpnp_vbat_sns_comp(int64_t *result,
		break;
		}
		break;
		case QPNP_REV_ID_8909_1_1:
		switch (vadc->id) {
		case COMP_ID_SMIC:
		if (die_temp < 30000)
		temp_var = (QPNP_VBAT_COEFF_52);
		else if (die_temp > 30000)
		temp_var = (((die_temp - 30000) *
		(-QPNP_VBAT_COEFF_51)) +
		(QPNP_VBAT_COEFF_52));
		break;
		}
		break;
		default:
		temp_var = 0;
		break;