1 files changed, 0 insertions, 100 deletions
diff --git a/driver/temp_sensor/thermistor_ncp15wb.c b/driver/temp_sensor/thermistor_ncp15wb.c
deleted file mode 100644
index dba06ee326..0000000000
--- a/driver/temp_sensor/thermistor_ncp15wb.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/* Copyright 2015 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/* NCP15WB thermistor module for Chrome EC */
-
-#include "common.h"
-#include "temp_sensor/thermistor.h"
-#include "util.h"
-
-/*
- * ADC-to-temp conversion assumes recommended thermistor / resistor
- * configuration (NCP15WB* / 24.9K) with a 10-bit ADC.
- * For 50C through 100C, use linear interpolation from discreet points
- * in table below. For temps < 50C, use a simplified linear function.
- */
-#define ADC_DISCREET_RANGE_START_TEMP	50
-/* 10 bit ADC result corresponding to START_TEMP */
-#define ADC_DISCREET_RANGE_START_RESULT	407
-
-#define ADC_DISCREET_RANGE_LIMIT_TEMP	100
-/* 10 bit ADC result corresponding to LIMIT_TEMP */
-#define ADC_DISCREET_RANGE_LIMIT_RESULT	107
-
-/* Table entries in steppings of 5C */
-#define ADC_DISCREET_RANGE_STEP		5
-
-/* Discreet range ADC results (9 bit) per temperature, in 5 degree steps */
-static const uint8_t adc_result[] = {
-	203,	/* 50 C */
-	178,	/* 55 C */
-	157,	/* 60 C */
-	138,	/* 65 C */
-	121,	/* 70 C */
-	106,	/* 75 C */
-	93,	/* 80 C */
-	81,	/* 85 C */
-	70,	/* 90 C */
-	61,	/* 95 C */
-	53,	/* 100 C */
-};
-
-/*
- * From 20C (reasonable lower limit of temperatures we care about accuracy)
- * to 50C, the temperature curve is roughly linear, so we don't need to include
- * data points in our table.
- */
-#define adc_to_temp(result) (ADC_DISCREET_RANGE_START_TEMP - \
-	(((result) - ADC_DISCREET_RANGE_START_RESULT) * 3 + 16) / 32)
-
-/* Convert ADC result (10 bit) to temperature in celsius */
-int ncp15wb_calculate_temp(uint16_t adc)
-{
-	int temp;
-	int head, tail, mid;
-	uint8_t delta, step;
-
-	/* Is ADC result in linear range? */
-	if (adc >= ADC_DISCREET_RANGE_START_RESULT)
-		temp = adc_to_temp(adc);
-	/* Hotter than our discreet range limit? */
-	else if (adc <= ADC_DISCREET_RANGE_LIMIT_RESULT)
-		temp = ADC_DISCREET_RANGE_LIMIT_TEMP;
-	/* We're in the discreet range */
-	else {
-		/* Table uses 9 bit ADC values */
-		adc /= 2;
-
-		/* Binary search to find proper table entry */
-		head = 0;
-		tail = ARRAY_SIZE(adc_result) - 1;
-		while (head != tail) {
-			mid = (head + tail) / 2;
-			if (adc_result[mid] >= adc &&
-			    adc_result[mid+1] < adc)
-				break;
-			if (adc_result[mid] > adc)
-				head = mid + 1;
-			else
-				tail = mid;
-		}
-
-		/* Now fit between table entries using linear interpolation. */
-		if (head != tail) {
-			delta = adc_result[mid] - adc_result[mid + 1];
-			step = ((adc_result[mid] - adc) *
-				ADC_DISCREET_RANGE_STEP + delta / 2) / delta;
-		} else {
-			/* Edge case where adc = max */
-			mid = head;
-			step = 0;
-		}
-
-		temp = ADC_DISCREET_RANGE_START_TEMP +
-		       ADC_DISCREET_RANGE_STEP * mid + step;
-	}
-
-	return temp;
-}