diff options
| -rw-r--r-- | driver/build.mk | 1 | ||||
| -rw-r--r-- | driver/temp_sensor/oti502.c | 67 | ||||
| -rw-r--r-- | driver/temp_sensor/oti502.h | 27 | ||||
| -rw-r--r-- | include/config.h | 1 |
4 files changed, 96 insertions, 0 deletions
diff --git a/driver/build.mk b/driver/build.mk index 64b4b98339..7beb937268 100644 --- a/driver/build.mk +++ b/driver/build.mk @@ -110,6 +110,7 @@ driver-$(CONFIG_TEMP_SENSOR_F75303)+=temp_sensor/f75303.o driver-$(CONFIG_TEMP_SENSOR_G753)+=temp_sensor/g753.o driver-$(CONFIG_TEMP_SENSOR_G781)+=temp_sensor/g78x.o driver-$(CONFIG_TEMP_SENSOR_G782)+=temp_sensor/g78x.o +driver-$(CONFIG_TEMP_SENSOR_OTI502)+=temp_sensor/oti502.o driver-$(CONFIG_TEMP_SENSOR_SB_TSI)+=temp_sensor/sb_tsi.o driver-$(CONFIG_TEMP_SENSOR_TMP006)+=temp_sensor/tmp006.o driver-$(CONFIG_TEMP_SENSOR_TMP112)+=temp_sensor/tmp112.o diff --git a/driver/temp_sensor/oti502.c b/driver/temp_sensor/oti502.c new file mode 100644 index 0000000000..8a420363e8 --- /dev/null +++ b/driver/temp_sensor/oti502.c @@ -0,0 +1,67 @@ +/* Copyright 2019 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. + */ + +/* OTI502 temperature sensor module for Chrome EC */ + +#include "common.h" +#include "console.h" +#include "oti502.h" +#include "i2c.h" +#include "hooks.h" +#include "util.h" + +static int temp_val_ambient; /* Ambient is chip temperature*/ +static int temp_val_object; /* Object is IR temperature */ + +static int oti502_read_block(const int offset, uint8_t *data, int len) +{ + return i2c_read_block(I2C_PORT_THERMAL, OTI502_I2C_ADDR_FLAGS, + offset, data, len); +} + +int oti502_get_val(int idx, int *temp_ptr) +{ + switch (idx) { + case OTI502_IDX_AMBIENT: + *temp_ptr = temp_val_ambient; + break; + case OTI502_IDX_OBJECT: + *temp_ptr = temp_val_object; + break; + default: + return EC_ERROR_UNKNOWN; + } + + return EC_SUCCESS; +} + +static void temp_sensor_poll(void) +{ + uint8_t temp_val[6]; + + memset(temp_val, 0, sizeof(temp_val)); + + oti502_read_block(0x80, temp_val, sizeof(temp_val)); + + if (temp_val[2] >= 0x80) { + /* Treat temperature as 0 degree C if temperature is negative*/ + temp_val_ambient = 0; + ccprintf("Temperature ambient is negative !\n"); + } else { + temp_val_ambient = ((temp_val[1] << 8) + temp_val[0]) / 200; + temp_val_ambient = C_TO_K(temp_val_ambient); + } + + if (temp_val[5] >= 0x80) { + /* Treat temperature as 0 degree C if temperature is negative*/ + temp_val_object = 0; + ccprintf("Temperature object is negative !\n"); + } else { + temp_val_object = ((temp_val[4] << 8) + temp_val[5]) / 200; + temp_val_object = C_TO_K(temp_val_object); + } +} +DECLARE_HOOK(HOOK_SECOND, temp_sensor_poll, HOOK_PRIO_TEMP_SENSOR); + diff --git a/driver/temp_sensor/oti502.h b/driver/temp_sensor/oti502.h new file mode 100644 index 0000000000..4e846282c1 --- /dev/null +++ b/driver/temp_sensor/oti502.h @@ -0,0 +1,27 @@ +/* Copyright 2019 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. + */ + +/* OTI502 temperature sensor module for Chrome EC */ + +#ifndef __CROS_EC_OTI502_H +#define __CROS_EC_OTI502_H + +#define OTI502_I2C_ADDR_FLAGS 0x10 + +#define OTI502_IDX_AMBIENT 0 +#define OTI502_IDX_OBJECT 1 + +/** + * 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 oti502_get_val(int idx, int *temp_ptr); + +#endif /* __CROS_EC_OTI502_H */ diff --git a/include/config.h b/include/config.h index 1bc0f30006..823210d2d7 100644 --- a/include/config.h +++ b/include/config.h @@ -3500,6 +3500,7 @@ #undef CONFIG_TEMP_SENSOR_G753 /* G753 sensor, on I2C bus */ #undef CONFIG_TEMP_SENSOR_G781 /* G781 sensor, on I2C bus */ #undef CONFIG_TEMP_SENSOR_G782 /* G782 sensor, on I2C bus */ +#undef CONFIG_TEMP_SENSOR_OTI502 /* OTI502 sensor, on I2C bus */ #undef CONFIG_TEMP_SENSOR_SB_TSI /* SB_TSI sensor, on I2C bus */ #undef CONFIG_TEMP_SENSOR_TMP006 /* TI TMP006 sensor, on I2C bus */ #undef CONFIG_TEMP_SENSOR_TMP411 /* TI TMP411 sensor, on I2C bus */ |