temp sensor: add support for G782

modify g781.c/.h to g78x.c/.h to suppor both G781/G782 temp sensor
based on CONFIG_TEMP_SENSOR_G781 or CONFIG_TEMP_SENSOR_G782

BUG=none
BRANCH=none
TEST=make buildall; able to get temperature data on board with G782

Change-Id: Ia32c85e9964bfd7c0c5263f04368bc001a27fe10
Signed-off-by: Kevin K Wong <kevin.k.wong@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/334228
Reviewed-by: Shawn N <shawnn@chromium.org>

7 files changed, 383 insertions, 292 deletions

diff --git a/board/auron/board.c b/board/auron/board.c
index 1a56ac5492..5657ff6907 100644
--- a/board/auron/board.c
+++ b/board/auron/board.c
@@ -9,7 +9,7 @@
 #include "backlight.h"
 #include "chipset.h"
 #include "common.h"
-#include "driver/temp_sensor/g781.h"
+#include "driver/temp_sensor/g78x.h"
 #include "extpower.h"
 #include "fan.h"
 #include "gpio.h"
@@ -89,10 +89,10 @@ const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
 const struct temp_sensor_t temp_sensors[] = {
 	{"PECI", TEMP_SENSOR_TYPE_CPU, peci_temp_sensor_get_val, 0, 2},
 	{"ECInternal", TEMP_SENSOR_TYPE_BOARD, chip_temp_sensor_get_val, 0, 4},
-	{"G781Internal", TEMP_SENSOR_TYPE_BOARD, g781_get_val,
-		G781_IDX_INTERNAL, 4},
-	{"G781External", TEMP_SENSOR_TYPE_BOARD, g781_get_val,
-		G781_IDX_EXTERNAL, 4},
+	{"G781Internal", TEMP_SENSOR_TYPE_BOARD, g78x_get_val,
+		G78X_IDX_INTERNAL, 4},
+	{"G781External", TEMP_SENSOR_TYPE_BOARD, g78x_get_val,
+		G78X_IDX_EXTERNAL1, 4},
 };
 BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT);
 
diff --git a/driver/build.mk b/driver/build.mk
index 13aae200bc..19e108eb89 100644
--- a/driver/build.mk
+++ b/driver/build.mk
@@ -65,7 +65,8 @@ driver-$(CONFIG_REGULATOR_IR357X)+=regulator_ir357x.o
 # Temperature sensors
 driver-$(CONFIG_TEMP_SENSOR_BD99992GW)+=temp_sensor/bd99992gw.o
 driver-$(CONFIG_TEMP_SENSOR_EC_ADC)+=temp_sensor/ec_adc.o
-driver-$(CONFIG_TEMP_SENSOR_G781)+=temp_sensor/g781.o
+driver-$(CONFIG_TEMP_SENSOR_G781)+=temp_sensor/g78x.o
+driver-$(CONFIG_TEMP_SENSOR_G782)+=temp_sensor/g78x.o
 driver-$(CONFIG_TEMP_SENSOR_TMP006)+=temp_sensor/tmp006.o
 driver-$(CONFIG_TEMP_SENSOR_TMP432)+=temp_sensor/tmp432.o
 
diff --git a/driver/temp_sensor/g781.c b/driver/temp_sensor/g781.c
deleted file mode 100644
index c301588637..0000000000
--- a/driver/temp_sensor/g781.c
+++ /dev/null
@@ -1,216 +0,0 @@
-/* Copyright (c) 2013 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.
- */
-
-/* G781 temperature sensor module for Chrome EC */
-
-#include "common.h"
-#include "console.h"
-#include "g781.h"
-#include "gpio.h"
-#include "i2c.h"
-#include "hooks.h"
-#include "util.h"
-
-static int temp_val_local;
-static int temp_val_remote;
-
-/**
- * Determine whether the sensor is powered.
- *
- * @return non-zero the g781 sensor is powered.
- */
-static int has_power(void)
-{
-#ifdef CONFIG_TEMP_SENSOR_POWER_GPIO
-	return gpio_get_level(CONFIG_TEMP_SENSOR_POWER_GPIO);
-#else
-	return 1;
-#endif
-}
-
-static int raw_read8(const int offset, int *data_ptr)
-{
-	return i2c_read8(I2C_PORT_THERMAL, G781_I2C_ADDR, offset, data_ptr);
-}
-
-#ifdef CONFIG_CMD_TEMP_SENSOR
-static int raw_write8(const int offset, int data)
-{
-	return i2c_write8(I2C_PORT_THERMAL, G781_I2C_ADDR, offset, data);
-}
-#endif
-
-static int get_temp(const int offset, int *temp_ptr)
-{
-	int rv;
-	int temp_raw = 0;
-
-	rv = raw_read8(offset, &temp_raw);
-	if (rv < 0)
-		return rv;
-
-	*temp_ptr = (int)(int8_t)temp_raw;
-	return EC_SUCCESS;
-}
-
-#ifdef CONFIG_CMD_TEMP_SENSOR
-static int set_temp(const int offset, int temp)
-{
-	if (temp < -127 || temp > 127)
-		return EC_ERROR_INVAL;
-
-	return raw_write8(offset, (uint8_t)temp);
-}
-#endif
-
-int g781_get_val(int idx, int *temp_ptr)
-{
-	if (!has_power())
-		return EC_ERROR_NOT_POWERED;
-
-	switch (idx) {
-	case G781_IDX_INTERNAL:
-		*temp_ptr = temp_val_local;
-		break;
-	case G781_IDX_EXTERNAL:
-		*temp_ptr = temp_val_remote;
-		break;
-	default:
-		return EC_ERROR_UNKNOWN;
-	}
-
-	return EC_SUCCESS;
-}
-
-static void temp_sensor_poll(void)
-{
-	if (!has_power())
-		return;
-
-	get_temp(G781_TEMP_LOCAL, &temp_val_local);
-	temp_val_local = C_TO_K(temp_val_local);
-
-	get_temp(G781_TEMP_REMOTE, &temp_val_remote);
-	temp_val_remote = C_TO_K(temp_val_remote);
-}
-DECLARE_HOOK(HOOK_SECOND, temp_sensor_poll, HOOK_PRIO_TEMP_SENSOR);
-
-#ifdef CONFIG_CMD_TEMP_SENSOR
-static int print_status(void)
-{
-	int value;
-	int rv;
-
-
-	rv = get_temp(G781_TEMP_LOCAL, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("Local Temp:   %3dC\n", value);
-
-	rv = get_temp(G781_LOCAL_TEMP_THERM_LIMIT, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("  Therm Trip: %3dC\n", value);
-
-	rv = get_temp(G781_LOCAL_TEMP_HIGH_LIMIT_R, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("  High Alarm: %3dC\n", value);
-
-	rv = get_temp(G781_LOCAL_TEMP_LOW_LIMIT_R, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("  Low Alarm:  %3dC\n", value);
-
-	rv = get_temp(G781_TEMP_REMOTE, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("Remote Temp:  %3dC\n", value);
-
-	rv = get_temp(G781_REMOTE_TEMP_THERM_LIMIT, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("  Therm Trip: %3dC\n", value);
-
-	rv = get_temp(G781_REMOTE_TEMP_HIGH_LIMIT_R, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("  High Alarm: %3dC\n", value);
-
-	rv = get_temp(G781_REMOTE_TEMP_LOW_LIMIT_R, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("  Low Alarm:  %3dC\n", value);
-
-	rv = raw_read8(G781_STATUS, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("\nSTATUS: %08b\n", value);
-
-	rv = raw_read8(G781_CONFIGURATION_R, &value);
-	if (rv < 0)
-		return rv;
-	ccprintf("CONFIG: %08b\n", value);
-
-	return EC_SUCCESS;
-}
-
-static int command_g781(int argc, char **argv)
-{
-	char *command;
-	char *e;
-	int data;
-	int offset;
-	int rv;
-
-	if (!has_power()) {
-		ccprintf("ERROR: Temp sensor not powered.\n");
-		return EC_ERROR_NOT_POWERED;
-	}
-
-	/* If no args just print status */
-	if (argc == 1)
-		return print_status();
-
-	if (argc < 3)
-		return EC_ERROR_PARAM_COUNT;
-
-	command = argv[1];
-	offset = strtoi(argv[2], &e, 0);
-	if (*e || offset < 0 || offset > 255)
-		return EC_ERROR_PARAM2;
-
-	if (!strcasecmp(command, "getbyte")) {
-		rv = raw_read8(offset, &data);
-		if (rv < 0)
-			return rv;
-		ccprintf("Byte at offset 0x%02x is %08b\n", offset, data);
-		return rv;
-	}
-
-	/* Remaining commands are of the form "g781 set-command offset data" */
-	if (argc != 4)
-		return EC_ERROR_PARAM_COUNT;
-
-	data = strtoi(argv[3], &e, 0);
-	if (*e)
-		return EC_ERROR_PARAM3;
-
-	if (!strcasecmp(command, "settemp")) {
-		ccprintf("Setting 0x%02x to %dC\n", offset, data);
-		rv = set_temp(offset, data);
-	} else if (!strcasecmp(command, "setbyte")) {
-		ccprintf("Setting 0x%02x to 0x%02x\n", offset, data);
-		rv = raw_write8(offset, data);
-	} else
-		return EC_ERROR_PARAM1;
-
-	return rv;
-}
-DECLARE_CONSOLE_COMMAND(g781, command_g781,
-	"[settemp|setbyte <offset> <value>] or [getbyte <offset>]. "
-	"Temps in Celsius.",
-	"Print g781 temp sensor status or set parameters.", NULL);
-#endif
diff --git a/driver/temp_sensor/g781.h b/driver/temp_sensor/g781.h
deleted file mode 100644
index c9069749d2..0000000000
--- a/driver/temp_sensor/g781.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/* Copyright (c) 2013 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.
- */
-
-/* G781 temperature sensor module for Chrome EC */
-
-#ifndef __CROS_EC_G781_H
-#define __CROS_EC_G781_H
-
-#define G781_I2C_ADDR		0x98 /* 7-bit address is 0x4C */
-
-#define G781_IDX_INTERNAL	0
-#define G781_IDX_EXTERNAL	1
-
-/* Chip-specific commands */
-#define G781_TEMP_LOCAL			0x00
-#define G781_TEMP_REMOTE		0x01
-#define G781_STATUS			0x02
-#define G781_CONFIGURATION_R		0x03
-#define G781_CONVERSION_RATE_R		0x04
-#define G781_LOCAL_TEMP_HIGH_LIMIT_R	0x05
-#define G781_LOCAL_TEMP_LOW_LIMIT_R	0x06
-#define G781_REMOTE_TEMP_HIGH_LIMIT_R	0x07
-#define G781_REMOTE_TEMP_LOW_LIMIT_R	0x08
-#define G781_CONFIGURATION_W		0x09
-#define G781_CONVERSION_RATE_W		0x0a
-#define G781_LOCAL_TEMP_HIGH_LIMIT_W	0x0b
-#define G781_LOCAL_TEMP_LOW_LIMIT_W	0x0c
-#define G781_REMOTE_TEMP_HIGH_LIMIT_W	0x0d
-#define G781_REMOTE_TEMP_LOW_LIMIT_W	0x0e
-#define G781_ONESHOT			0x0f
-#define G781_REMOTE_TEMP_EXTENDED	0x10
-#define G781_REMOTE_TEMP_OFFSET_HIGH	0x11
-#define G781_REMOTE_TEMP_OFFSET_EXTD	0x12
-#define G781_REMOTE_T_HIGH_LIMIT_EXTD	0x13
-#define G781_REMOTE_T_LOW_LIMIT_EXTD	0x14
-#define G781_REMOTE_TEMP_THERM_LIMIT	0x19
-#define G781_LOCAL_TEMP_THERM_LIMIT	0x20
-#define G781_THERM_HYSTERESIS		0x21
-#define G781_ALERT_FAULT_QUEUE_CODE	0x22
-#define G781_MANUFACTURER_ID		0xFE
-#define G781_DEVICE_ID			0xFF
-
-/* Config register bits */
-#define G781_CONFIGURATION_STANDBY	(1 << 6)
-#define G781_CONFIGURATION_ALERT_MASK	(1 << 7)
-
-/* Status register bits */
-#define G781_STATUS_LOCAL_TEMP_THERM_ALARM	(1 << 0)
-#define G781_STATUS_REMOTE_TEMP_THERM_ALARM	(1 << 1)
-#define G781_STATUS_REMOTE_TEMP_FAULT		(1 << 2)
-#define G781_STATUS_REMOTE_TEMP_LOW_ALARM	(1 << 3)
-#define G781_STATUS_REMOTE_TEMP_HIGH_ALARM	(1 << 4)
-#define G781_STATUS_LOCAL_TEMP_LOW_ALARM	(1 << 5)
-#define G781_STATUS_LOCAL_TEMP_HIGH_ALARM	(1 << 6)
-#define G781_STATUS_BUSY			(1 << 7)
-
-/**
- * Get the last polled value of a sensor.
- *
- * @param idx		Index to read. Idx indicates whether to read die
- *			temperature or external temperature.
- * @param temp_ptr	Destination for temperature in K.
- *
- * @return EC_SUCCESS if successful, non-zero if error.
- */
-int g781_get_val(int idx, int *temp_ptr);
-
-#endif  /* __CROS_EC_G781_H */
diff --git a/driver/temp_sensor/g78x.c b/driver/temp_sensor/g78x.c
new file mode 100644
index 0000000000..858ae38769
--- /dev/null
+++ b/driver/temp_sensor/g78x.c
@@ -0,0 +1,235 @@
+/* Copyright 2016 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.
+ */
+
+/* G781/G782 temperature sensor module for Chrome EC */
+
+#include "common.h"
+#include "console.h"
+#include "g78x.h"
+#include "gpio.h"
+#include "i2c.h"
+#include "hooks.h"
+#include "util.h"
+
+static int temp_val_local;
+static int temp_val_remote1;
+#ifdef CONFIG_TEMP_SENSOR_G782
+static int temp_val_remote2;
+#endif
+
+/**
+ * Determine whether the sensor is powered.
+ *
+ * @return non-zero the g781/g782 sensor is powered.
+ */
+static int has_power(void)
+{
+#ifdef CONFIG_TEMP_SENSOR_POWER_GPIO
+	return gpio_get_level(CONFIG_TEMP_SENSOR_POWER_GPIO);
+#else
+	return 1;
+#endif
+}
+
+static int raw_read8(const int offset, int *data_ptr)
+{
+	return i2c_read8(I2C_PORT_THERMAL, G78X_I2C_ADDR, offset, data_ptr);
+}
+
+#ifdef CONFIG_CMD_TEMP_SENSOR
+static int raw_write8(const int offset, int data)
+{
+	return i2c_write8(I2C_PORT_THERMAL, G78X_I2C_ADDR, offset, data);
+}
+#endif
+
+static int get_temp(const int offset, int *temp_ptr)
+{
+	int rv;
+	int temp_raw = 0;
+
+	rv = raw_read8(offset, &temp_raw);
+	if (rv < 0)
+		return rv;
+
+	*temp_ptr = (int)(int8_t)temp_raw;
+	return EC_SUCCESS;
+}
+
+#ifdef CONFIG_CMD_TEMP_SENSOR
+static int set_temp(const int offset, int temp)
+{
+	if (temp < -127 || temp > 127)
+		return EC_ERROR_INVAL;
+
+	return raw_write8(offset, (uint8_t)temp);
+}
+#endif
+
+int g78x_get_val(int idx, int *temp_ptr)
+{
+	if (!has_power())
+		return EC_ERROR_NOT_POWERED;
+
+	switch (idx) {
+	case G78X_IDX_INTERNAL:
+		*temp_ptr = temp_val_local;
+		break;
+	case G78X_IDX_EXTERNAL1:
+		*temp_ptr = temp_val_remote1;
+		break;
+#ifdef CONFIG_TEMP_SENSOR_G782
+	case G78X_IDX_EXTERNAL2:
+		*temp_ptr = temp_val_remote2;
+		break;
+#endif
+	default:
+		return EC_ERROR_UNKNOWN;
+	}
+
+	return EC_SUCCESS;
+}
+
+static void temp_sensor_poll(void)
+{
+	if (!has_power())
+		return;
+
+	get_temp(G78X_TEMP_LOCAL, &temp_val_local);
+	temp_val_local = C_TO_K(temp_val_local);
+
+	get_temp(G78X_TEMP_REMOTE1, &temp_val_remote1);
+	temp_val_remote1 = C_TO_K(temp_val_remote1);
+
+#ifdef CONFIG_TEMP_SENSOR_G782
+	get_temp(G78X_TEMP_REMOTE2, &temp_val_remote2);
+	temp_val_remote2 = C_TO_K(temp_val_remote2);
+#endif
+}
+DECLARE_HOOK(HOOK_SECOND, temp_sensor_poll, HOOK_PRIO_TEMP_SENSOR);
+
+#ifdef CONFIG_CMD_TEMP_SENSOR
+static void print_temps(const char *name,
+			const int temp_reg,
+			const int therm_limit_reg,
+			const int high_limit_reg,
+			const int low_limit_reg)
+{
+	int value;
+
+	ccprintf("%s:\n", name);
+
+	if (get_temp(temp_reg, &value) == EC_SUCCESS)
+		ccprintf("  Temp:       %3dC\n", value);
+
+	if (get_temp(therm_limit_reg, &value) == EC_SUCCESS)
+		ccprintf("  Therm Trip: %3dC\n", value);
+
+	if (get_temp(high_limit_reg, &value) == EC_SUCCESS)
+		ccprintf("  High Alarm: %3dC\n", value);
+
+	if (get_temp(low_limit_reg, &value) == EC_SUCCESS)
+		ccprintf("  Low Alarm:  %3dC\n", value);
+}
+
+static int print_status(void)
+{
+	int value;
+
+	if (!has_power()) {
+		ccprintf("ERROR: Temp sensor not powered.\n");
+		return EC_ERROR_NOT_POWERED;
+	}
+
+	print_temps("Local", G78X_TEMP_LOCAL,
+		    G78X_LOCAL_TEMP_THERM_LIMIT,
+		    G78X_LOCAL_TEMP_HIGH_LIMIT_R,
+		    G78X_LOCAL_TEMP_LOW_LIMIT_R);
+
+	print_temps("Remote1", G78X_TEMP_REMOTE1,
+		    G78X_REMOTE1_TEMP_THERM_LIMIT,
+		    G78X_REMOTE1_TEMP_HIGH_LIMIT_R,
+		    G78X_REMOTE1_TEMP_LOW_LIMIT_R);
+
+#ifdef CONFIG_TEMP_SENSOR_G782
+	print_temps("Remote2", G78X_TEMP_REMOTE1,
+		    G78X_REMOTE2_TEMP_THERM_LIMIT,
+		    G78X_REMOTE2_TEMP_HIGH_LIMIT_R,
+		    G78X_REMOTE2_TEMP_LOW_LIMIT_R);
+#endif
+
+	ccprintf("\n");
+
+	if (raw_read8(G78X_STATUS, &value) == EC_SUCCESS)
+		ccprintf("STATUS:  %08b\n", value);
+
+#ifdef CONFIG_TEMP_SENSOR_G782
+	if (raw_read8(G78X_STATUS1, &value) == EC_SUCCESS)
+		ccprintf("STATUS1: %08b\n", value);
+#endif
+
+	if (raw_read8(G78X_CONFIGURATION_R, &value) == EC_SUCCESS)
+		ccprintf("CONFIG:  %08b\n", value);
+
+	return EC_SUCCESS;
+}
+
+static int command_g78x(int argc, char **argv)
+{
+	char *command;
+	char *e;
+	int data;
+	int offset;
+	int rv;
+
+	if (!has_power()) {
+		ccprintf("ERROR: Temp sensor not powered.\n");
+		return EC_ERROR_NOT_POWERED;
+	}
+
+	/* If no args just print status */
+	if (argc == 1)
+		return print_status();
+
+	if (argc < 3)
+		return EC_ERROR_PARAM_COUNT;
+
+	command = argv[1];
+	offset = strtoi(argv[2], &e, 0);
+	if (*e || offset < 0 || offset > 255)
+		return EC_ERROR_PARAM2;
+
+	if (!strcasecmp(command, "getbyte")) {
+		rv = raw_read8(offset, &data);
+		if (rv < 0)
+			return rv;
+		ccprintf("Byte at offset 0x%02x is %08b\n", offset, data);
+		return rv;
+	}
+
+	/* Remaining commands are of the form "g78x set-command offset data" */
+	if (argc != 4)
+		return EC_ERROR_PARAM_COUNT;
+
+	data = strtoi(argv[3], &e, 0);
+	if (*e)
+		return EC_ERROR_PARAM3;
+
+	if (!strcasecmp(command, "settemp")) {
+		ccprintf("Setting 0x%02x to %dC\n", offset, data);
+		rv = set_temp(offset, data);
+	} else if (!strcasecmp(command, "setbyte")) {
+		ccprintf("Setting 0x%02x to 0x%02x\n", offset, data);
+		rv = raw_write8(offset, data);
+	} else
+		return EC_ERROR_PARAM1;
+
+	return rv;
+}
+DECLARE_CONSOLE_COMMAND(g78x, command_g78x,
+	"[settemp|setbyte <offset> <value>] or [getbyte <offset>]. "
+	"Temps in Celsius.",
+	"Print g781/g782 temp sensor status or set parameters.", NULL);
+#endif
diff --git a/driver/temp_sensor/g78x.h b/driver/temp_sensor/g78x.h
new file mode 100644
index 0000000000..8fa78ffa83
--- /dev/null
+++ b/driver/temp_sensor/g78x.h
@@ -0,0 +1,140 @@
+/* Copyright 2016 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.
+ */
+
+/* G781/G782 temperature sensor module for Chrome EC */
+
+#ifndef __CROS_EC_G78X_H
+#define __CROS_EC_G78X_H
+
+#if defined(CONFIG_TEMP_SENSOR_G781) && defined(CONFIG_TEMP_SENSOR_G782)
+#error Cannot support both G781 and G782 together!
+#endif
+
+#define G78X_I2C_ADDR		0x98 /* 7-bit address is 0x4C */
+
+#define G78X_IDX_INTERNAL	0
+#define G78X_IDX_EXTERNAL1	1
+#define G78X_IDX_EXTERNAL2	2
+
+#if defined(CONFIG_TEMP_SENSOR_G781)
+/* G781 register */
+#define G78X_TEMP_LOCAL			0x00
+#define G78X_TEMP_REMOTE1		0x01
+#define G78X_STATUS			0x02
+#define G78X_CONFIGURATION_R		0x03
+#define G78X_CONVERSION_RATE_R		0x04
+#define G78X_LOCAL_TEMP_HIGH_LIMIT_R	0x05
+#define G78X_LOCAL_TEMP_LOW_LIMIT_R	0x06
+#define G78X_REMOTE1_TEMP_HIGH_LIMIT_R	0x07
+#define G78X_REMOTE1_TEMP_LOW_LIMIT_R	0x08
+#define G78X_CONFIGURATION_W		0x09
+#define G78X_CONVERSION_RATE_W		0x0a
+#define G78X_LOCAL_TEMP_HIGH_LIMIT_W	0x0b
+#define G78X_LOCAL_TEMP_LOW_LIMIT_W	0x0c
+#define G78X_REMOTE1_TEMP_HIGH_LIMIT_W	0x0d
+#define G78X_REMOTE1_TEMP_LOW_LIMIT_W	0x0e
+#define G78X_ONESHOT			0x0f
+#define G78X_REMOTE1_TEMP_EXTENDED	0x10
+#define G78X_REMOTE1_TEMP_OFFSET_HIGH	0x11
+#define G78X_REMOTE1_TEMP_OFFSET_EXTD	0x12
+#define G78X_REMOTE1_T_HIGH_LIMIT_EXTD	0x13
+#define G78X_REMOTE1_T_LOW_LIMIT_EXTD	0x14
+#define G78X_REMOTE1_TEMP_THERM_LIMIT	0x19
+#define G78X_LOCAL_TEMP_THERM_LIMIT	0x20
+#define G78X_THERM_HYSTERESIS		0x21
+#define G78X_ALERT_FAULT_QUEUE_CODE	0x22
+#define G78X_MANUFACTURER_ID		0xFE
+#define G78X_DEVICE_ID			0xFF
+
+/* Config register bits */
+#define G78X_CONFIGURATION_STANDBY	(1 << 6)
+#define G78X_CONFIGURATION_ALERT_MASK	(1 << 7)
+
+/* Status register bits */
+#define G78X_STATUS_LOCAL_TEMP_THERM_ALARM	(1 << 0)
+#define G78X_STATUS_REMOTE1_TEMP_THERM_ALARM	(1 << 1)
+#define G78X_STATUS_REMOTE1_TEMP_FAULT		(1 << 2)
+#define G78X_STATUS_REMOTE1_TEMP_LOW_ALARM	(1 << 3)
+#define G78X_STATUS_REMOTE1_TEMP_HIGH_ALARM	(1 << 4)
+#define G78X_STATUS_LOCAL_TEMP_LOW_ALARM	(1 << 5)
+#define G78X_STATUS_LOCAL_TEMP_HIGH_ALARM	(1 << 6)
+#define G78X_STATUS_BUSY			(1 << 7)
+
+#elif defined(CONFIG_TEMP_SENSOR_G782)
+/* G782 register */
+#define G78X_TEMP_LOCAL			0x00
+#define G78X_TEMP_REMOTE1		0x01
+#define G78X_TEMP_REMOTE2		0x02
+#define G78X_STATUS			0x03
+#define G78X_CONFIGURATION_R		0x04
+#define G78X_CONFIGURATION_W		0x04
+#define G78X_CONVERSION_RATE_R		0x05
+#define G78X_CONVERSION_RATE_W		0x05
+#define G78X_LOCAL_TEMP_HIGH_LIMIT_R	0x06
+#define G78X_LOCAL_TEMP_HIGH_LIMIT_W	0x06
+#define G78X_LOCAL_TEMP_LOW_LIMIT_R	0x07
+#define G78X_LOCAL_TEMP_LOW_LIMIT_W	0x07
+#define G78X_REMOTE1_TEMP_HIGH_LIMIT_R	0x08
+#define G78X_REMOTE1_TEMP_HIGH_LIMIT_W	0x08
+#define G78X_REMOTE1_TEMP_LOW_LIMIT_R	0x09
+#define G78X_REMOTE1_TEMP_LOW_LIMIT_W	0x09
+#define G78X_REMOTE2_TEMP_HIGH_LIMIT_R	0x0a
+#define G78X_REMOTE2_TEMP_HIGH_LIMIT_W	0x0a
+#define G78X_REMOTE2_TEMP_LOW_LIMIT_R	0x0b
+#define G78X_REMOTE2_TEMP_LOW_LIMIT_W	0x0b
+#define G78X_ONESHOT			0x0c
+#define G78X_REMOTE1_TEMP_EXTENDED	0x0d
+#define G78X_REMOTE1_TEMP_OFFSET_HIGH	0x0e
+#define G78X_REMOTE1_TEMP_OFFSET_EXTD	0x0f
+#define G78X_REMOTE1_T_HIGH_LIMIT_EXTD	0x10
+#define G78X_REMOTE1_T_LOW_LIMIT_EXTD	0x11
+#define G78X_REMOTE1_TEMP_THERM_LIMIT	0x12
+#define G78X_REMOTE2_TEMP_EXTENDED	0x13
+#define G78X_REMOTE2_TEMP_OFFSET_HIGH	0x14
+#define G78X_REMOTE2_TEMP_OFFSET_EXTD	0x15
+#define G78X_REMOTE2_T_HIGH_LIMIT_EXTD	0x16
+#define G78X_REMOTE2_T_LOW_LIMIT_EXTD	0x17
+#define G78X_REMOTE2_TEMP_THERM_LIMIT	0x18
+#define G78X_STATUS1			0x19
+#define G78X_LOCAL_TEMP_THERM_LIMIT	0x20
+#define G78X_THERM_HYSTERESIS		0x21
+#define G78X_ALERT_FAULT_QUEUE_CODE	0x22
+#define G78X_MANUFACTURER_ID		0xFE
+#define G78X_DEVICE_ID			0xFF
+
+/* Config register bits */
+#define G78X_CONFIGURATION_REMOTE2_DIS	(1 << 5)
+#define G78X_CONFIGURATION_STANDBY	(1 << 6)
+#define G78X_CONFIGURATION_ALERT_MASK	(1 << 7)
+
+/* Status register bits */
+#define G78X_STATUS_LOCAL_TEMP_LOW_ALARM	(1 << 0)
+#define G78X_STATUS_LOCAL_TEMP_HIGH_ALARM	(1 << 1)
+#define G78X_STATUS_LOCAL_TEMP_THERM_ALARM	(1 << 2)
+#define G78X_STATUS_REMOTE2_TEMP_THERM_ALARM	(1 << 3)
+#define G78X_STATUS_REMOTE1_TEMP_THERM_ALARM	(1 << 4)
+#define G78X_STATUS_REMOTE2_TEMP_FAULT		(1 << 5)
+#define G78X_STATUS_REMOTE1_TEMP_FAULT		(1 << 6)
+#define G78X_STATUS_BUSY			(1 << 7)
+
+/* Status1 register bits */
+#define G78X_STATUS_REMOTE2_TEMP_LOW_ALARM	(1 << 4)
+#define G78X_STATUS_REMOTE2_TEMP_HIGH_ALARM	(1 << 5)
+#define G78X_STATUS_REMOTE1_TEMP_LOW_ALARM	(1 << 6)
+#define G78X_STATUS_REMOTE1_TEMP_HIGH_ALARM	(1 << 7)
+#endif
+
+/**
+ * Get the last polled value of a sensor.
+ *
+ * @param idx		Index to read. Idx indicates whether to read die
+ *			temperature or external temperature.
+ * @param temp_ptr	Destination for temperature in K.
+ *
+ * @return EC_SUCCESS if successful, non-zero if error.
+ */
+int g78x_get_val(int idx, int *temp_ptr);
+
+#endif  /* __CROS_EC_G78X_H */
diff --git a/include/config.h b/include/config.h
index df57da65b9..8181bbb532 100644
--- a/include/config.h
+++ b/include/config.h
@@ -1677,6 +1677,7 @@
 #undef CONFIG_TEMP_SENSOR_BD99992GW	/* BD99992GW PMIC, on I2C bus */
 #undef CONFIG_TEMP_SENSOR_EC_ADC        /* Thermistors on EC's own ADC */
 #undef CONFIG_TEMP_SENSOR_G781		/* G781 sensor, on I2C bus */
+#undef CONFIG_TEMP_SENSOR_G782		/* G782 sensor, on I2C bus */
 #undef CONFIG_TEMP_SENSOR_TMP006	/* TI TMP006 sensor, on I2C bus */
 #undef CONFIG_TEMP_SENSOR_TMP432	/* TI TMP432 sensor, on I2C bus */