diff options
Diffstat (limited to 'driver/temp_sensor/g78x.h')
| -rw-r--r-- | driver/temp_sensor/g78x.h | 140 |
1 files changed, 140 insertions, 0 deletions
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 */ |