diff options
Diffstat (limited to 'common/temp_sensor.c')
| -rw-r--r-- | common/temp_sensor.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/common/temp_sensor.c b/common/temp_sensor.c index 9f653612f0..cdad3ebd1f 100644 --- a/common/temp_sensor.c +++ b/common/temp_sensor.c @@ -106,12 +106,30 @@ static void update_mapped_memory(void) void temp_sensor_task(void) { int i; + uint8_t *base, *base_b; + + /* + * Initialize memory-mapped data. We initialize valid sensors to 23 C + * so that if a temperature value is read before we actually poll the + * sensors, we don't end up with an insane value. + */ + base = host_get_memmap(EC_MEMMAP_TEMP_SENSOR); + base_b = host_get_memmap(EC_MEMMAP_TEMP_SENSOR_B); + for (i = 0; i < TEMP_SENSOR_COUNT; ++i) { + if (i < EC_TEMP_SENSOR_ENTRIES) + base[i] = 0x60; /* 23 C */ + else + base_b[i - EC_TEMP_SENSOR_ENTRIES] = 0x60; /* 23 C */ + } - /* Initialize memory-mapped data */ - memset(host_get_memmap(EC_MEMMAP_TEMP_SENSOR), - EC_TEMP_SENSOR_NOT_PRESENT, EC_TEMP_SENSOR_ENTRIES); - memset(host_get_memmap(EC_MEMMAP_TEMP_SENSOR_B), - EC_TEMP_SENSOR_NOT_PRESENT, EC_TEMP_SENSOR_B_ENTRIES); + /* Set the rest of memory region to SENSOR_NOT_PRESENT */ + for (; i < EC_TEMP_SENSOR_ENTRIES + EC_TEMP_SENSOR_B_ENTRIES; ++i) { + if (i < EC_TEMP_SENSOR_ENTRIES) + base[i] = EC_TEMP_SENSOR_NOT_PRESENT; + else + base_b[i - EC_TEMP_SENSOR_ENTRIES] = + EC_TEMP_SENSOR_NOT_PRESENT; + } /* Temp sensor data is present, with B range supported. */ *host_get_memmap(EC_MEMMAP_THERMAL_VERSION) = 2; |