1 files changed, 151 insertions, 0 deletions
diff --git a/board/draco/sensors.c b/board/draco/sensors.c
new file mode 100644
index 0000000000..b68984c95c
--- /dev/null
+++ b/board/draco/sensors.c
@@ -0,0 +1,151 @@
+/* Copyright 2021 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.
+ */
+
+#include "common.h"
+#include "adc.h"
+#include "hooks.h"
+#include "temp_sensor.h"
+#include "thermal.h"
+#include "temp_sensor/thermistor.h"
+
+/* ADC configuration */
+struct adc_t adc_channels[] = {
+	[ADC_TEMP_SENSOR_1_DDR_SOC] = {
+		.name = "TEMP_DDR_SOC",
+		.input_ch = NPCX_ADC_CH0,
+		.factor_mul = ADC_MAX_VOLT,
+		.factor_div = ADC_READ_MAX + 1,
+		.shift = 0,
+	},
+	[ADC_TEMP_SENSOR_2_AMBIENT] = {
+		.name = "TEMP_AMBIENT",
+		.input_ch = NPCX_ADC_CH1,
+		.factor_mul = ADC_MAX_VOLT,
+		.factor_div = ADC_READ_MAX + 1,
+		.shift = 0,
+	},
+	[ADC_TEMP_SENSOR_3_CHARGER] = {
+		.name = "TEMP_CHARGER",
+		.input_ch = NPCX_ADC_CH6,
+		.factor_mul = ADC_MAX_VOLT,
+		.factor_div = ADC_READ_MAX + 1,
+		.shift = 0,
+	},
+	[ADC_TEMP_SENSOR_4_WWAN] = {
+		.name = "TEMP_WWAN",
+		.input_ch = NPCX_ADC_CH7,
+		.factor_mul = ADC_MAX_VOLT,
+		.factor_div = ADC_READ_MAX + 1,
+		.shift = 0,
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
+
+/* Temperature sensor configuration */
+const struct temp_sensor_t temp_sensors[] = {
+	[TEMP_SENSOR_1_DDR_SOC] = {
+		.name = "DDR and SOC",
+		.type = TEMP_SENSOR_TYPE_BOARD,
+		.read = get_temp_3v3_30k9_47k_4050b,
+		.idx = ADC_TEMP_SENSOR_1_DDR_SOC,
+	},
+	[TEMP_SENSOR_2_AMBIENT] = {
+		.name = "Ambient",
+		.type = TEMP_SENSOR_TYPE_BOARD,
+		.read = get_temp_3v3_30k9_47k_4050b,
+		.idx = ADC_TEMP_SENSOR_2_AMBIENT,
+	},
+	[TEMP_SENSOR_3_CHARGER] = {
+		.name = "Charger",
+		.type = TEMP_SENSOR_TYPE_BOARD,
+		.read = get_temp_3v3_30k9_47k_4050b,
+		.idx = ADC_TEMP_SENSOR_3_CHARGER,
+	},
+	[TEMP_SENSOR_4_WWAN] = {
+		.name = "WWAN",
+		.type = TEMP_SENSOR_TYPE_BOARD,
+		.read = get_temp_3v3_30k9_47k_4050b,
+		.idx = ADC_TEMP_SENSOR_4_WWAN,
+	},
+};
+BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT);
+
+#define THERMAL_CPU \
+	{ \
+		.temp_host = { \
+			[EC_TEMP_THRESH_HIGH] = C_TO_K(85), \
+			[EC_TEMP_THRESH_HALT] = C_TO_K(90), \
+		}, \
+		.temp_host_release = { \
+			[EC_TEMP_THRESH_HIGH] = C_TO_K(80), \
+		}, \
+		.temp_fan_off = C_TO_K(35), \
+		.temp_fan_max = C_TO_K(60), \
+	}
+__maybe_unused static const struct ec_thermal_config thermal_cpu = THERMAL_CPU;
+
+#define THERMAL_AMBIENT \
+	{ \
+		.temp_host = { \
+			[EC_TEMP_THRESH_HIGH] = C_TO_K(85), \
+			[EC_TEMP_THRESH_HALT] = C_TO_K(90), \
+		}, \
+		.temp_host_release = { \
+			[EC_TEMP_THRESH_HIGH] = C_TO_K(80), \
+		}, \
+		.temp_fan_off = C_TO_K(35), \
+		.temp_fan_max = C_TO_K(60), \
+	}
+__maybe_unused static const struct ec_thermal_config thermal_ambient =
+	THERMAL_AMBIENT;
+
+/*
+ * Inductor limits - used for both charger and PP3300 regulator
+ *
+ * Need to use the lower of the charger IC, PP3300 regulator, and the inductors
+ *
+ * Charger max recommended temperature 125C, max absolute temperature 150C
+ * PP3300 regulator: operating range -40 C to 125 C
+ *
+ * Inductors: limit of 125c
+ * PCB: limit is 80c
+ */
+#define THERMAL_CHARGER \
+	{ \
+		.temp_host = { \
+			[EC_TEMP_THRESH_HIGH] = C_TO_K(105), \
+			[EC_TEMP_THRESH_HALT] = C_TO_K(120), \
+		}, \
+		.temp_host_release = { \
+			[EC_TEMP_THRESH_HIGH] = C_TO_K(90), \
+		}, \
+		.temp_fan_off = C_TO_K(35), \
+		.temp_fan_max = C_TO_K(65), \
+	}
+__maybe_unused static const struct ec_thermal_config thermal_charger =
+	THERMAL_CHARGER;
+
+#define THERMAL_WWAN \
+	{ \
+		.temp_host = { \
+			[EC_TEMP_THRESH_HIGH] = C_TO_K(130), \
+			[EC_TEMP_THRESH_HALT] = C_TO_K(130), \
+		}, \
+		.temp_host_release = { \
+			[EC_TEMP_THRESH_HIGH] = C_TO_K(100), \
+		}, \
+		.temp_fan_off = C_TO_K(35), \
+		.temp_fan_max = C_TO_K(60), \
+	}
+__maybe_unused static const struct ec_thermal_config thermal_wwan =
+	THERMAL_WWAN;
+
+struct ec_thermal_config thermal_params[] = {
+	[TEMP_SENSOR_1_DDR_SOC] = THERMAL_CPU,
+	[TEMP_SENSOR_2_AMBIENT] = THERMAL_AMBIENT,
+	[TEMP_SENSOR_3_CHARGER] = THERMAL_CHARGER,
+	[TEMP_SENSOR_4_WWAN] = THERMAL_WWAN,
+};
+BUILD_ASSERT(ARRAY_SIZE(thermal_params) == TEMP_SENSOR_COUNT);