diff options
Diffstat (limited to 'board/yorp/board.c')
| -rw-r--r-- | board/yorp/board.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/board/yorp/board.c b/board/yorp/board.c index 2b9fe53136..df34cad66b 100644 --- a/board/yorp/board.c +++ b/board/yorp/board.c @@ -31,6 +31,8 @@ #include "power_button.h" #include "switch.h" #include "system.h" +#include "temp_sensor.h" +#include "thermistor.h" #include "tcpci.h" #include "usb_mux.h" #include "usbc_ppc.h" @@ -83,6 +85,10 @@ const int hibernate_wake_pins_used = ARRAY_SIZE(hibernate_wake_pins); /* ADC channels */ const struct adc_t adc_channels[] = { + [ADC_TEMP_SENSOR_AMB] = { + "TEMP_AMB", NPCX_ADC_CH0, ADC_MAX_VOLT, ADC_READ_MAX+1, 0}, + [ADC_TEMP_SENSOR_CHARGER] = { + "TEMP_CHARGER", NPCX_ADC_CH1, ADC_MAX_VOLT, ADC_READ_MAX+1, 0}, /* Vbus C0 sensing (10x voltage divider). PPVAR_USB_C0_VBUS */ [ADC_VBUS_C0] = { "VBUS_C0", NPCX_ADC_CH4, ADC_MAX_VOLT*10, ADC_READ_MAX+1, 0}, @@ -129,6 +135,92 @@ const int usb_port_enable[USB_PORT_COUNT] = { /* TODO(b/74388692): Add second port control after hardware fix. */ }; +/* + * Data derived from Seinhart-Hart equation in a resistor divider circuit with + * Vdd=3300mV, R = 13.7Kohm, and Murata NCP15WB-series thermistor (B = 4050, + * T0 = 298.15, nominal resistance (R0) = 47Kohm). + */ +#define CHARGER_THERMISTOR_SCALING_FACTOR 13 +static const struct thermistor_data_pair charger_thermistor_data[] = { + { 3044 / CHARGER_THERMISTOR_SCALING_FACTOR, 0 }, + { 2890 / CHARGER_THERMISTOR_SCALING_FACTOR, 10 }, + { 2680 / CHARGER_THERMISTOR_SCALING_FACTOR, 20 }, + { 2418 / CHARGER_THERMISTOR_SCALING_FACTOR, 30 }, + { 2117 / CHARGER_THERMISTOR_SCALING_FACTOR, 40 }, + { 1800 / CHARGER_THERMISTOR_SCALING_FACTOR, 50 }, + { 1490 / CHARGER_THERMISTOR_SCALING_FACTOR, 60 }, + { 1208 / CHARGER_THERMISTOR_SCALING_FACTOR, 70 }, + { 966 / CHARGER_THERMISTOR_SCALING_FACTOR, 80 }, + { 860 / CHARGER_THERMISTOR_SCALING_FACTOR, 85 }, + { 766 / CHARGER_THERMISTOR_SCALING_FACTOR, 90 }, + { 679 / CHARGER_THERMISTOR_SCALING_FACTOR, 95 }, + { 603 / CHARGER_THERMISTOR_SCALING_FACTOR, 100 }, +}; + +static const struct thermistor_info charger_thermistor_info = { + .scaling_factor = CHARGER_THERMISTOR_SCALING_FACTOR, + .num_pairs = ARRAY_SIZE(charger_thermistor_data), + .data = charger_thermistor_data, +}; + +int board_get_charger_temp(int idx, int *temp_ptr) +{ + int mv = adc_read_channel(NPCX_ADC_CH1); + + if (mv < 0) + return EC_ERROR_UNKNOWN; + + *temp_ptr = thermistor_linear_interpolate(mv, &charger_thermistor_info); + *temp_ptr = C_TO_K(*temp_ptr); + return EC_SUCCESS; +} + +/* + * Data derived from Seinhart-Hart equation in a resistor divider circuit with + * Vdd=3300mV, R = 51.1Kohm, and Murata NCP15WB-series thermistor (B = 4050, + * T0 = 298.15, nominal resistance (R0) = 47Kohm). + */ +#define AMB_THERMISTOR_SCALING_FACTOR 11 +static const struct thermistor_data_pair amb_thermistor_data[] = { + { 2512 / AMB_THERMISTOR_SCALING_FACTOR, 0 }, + { 2158 / AMB_THERMISTOR_SCALING_FACTOR, 10 }, + { 1772 / AMB_THERMISTOR_SCALING_FACTOR, 20 }, + { 1398 / AMB_THERMISTOR_SCALING_FACTOR, 30 }, + { 1070 / AMB_THERMISTOR_SCALING_FACTOR, 40 }, + { 803 / AMB_THERMISTOR_SCALING_FACTOR, 50 }, + { 597 / AMB_THERMISTOR_SCALING_FACTOR, 60 }, + { 443 / AMB_THERMISTOR_SCALING_FACTOR, 70 }, + { 329 / AMB_THERMISTOR_SCALING_FACTOR, 80 }, + { 285 / AMB_THERMISTOR_SCALING_FACTOR, 85 }, + { 247 / AMB_THERMISTOR_SCALING_FACTOR, 90 }, + { 214 / AMB_THERMISTOR_SCALING_FACTOR, 95 }, + { 187 / AMB_THERMISTOR_SCALING_FACTOR, 100 }, +}; + +static const struct thermistor_info amb_thermistor_info = { + .scaling_factor = AMB_THERMISTOR_SCALING_FACTOR, + .num_pairs = ARRAY_SIZE(amb_thermistor_data), + .data = amb_thermistor_data, +}; + +int board_get_ambient_temp(int idx, int *temp_ptr) +{ + int mv = adc_read_channel(NPCX_ADC_CH0); + + if (mv < 0) + return EC_ERROR_UNKNOWN; + + *temp_ptr = thermistor_linear_interpolate(mv, &amb_thermistor_info); + *temp_ptr = C_TO_K(*temp_ptr); + return EC_SUCCESS; +} + +const struct temp_sensor_t temp_sensors[] = { + {"Ambient", TEMP_SENSOR_TYPE_BOARD, board_get_ambient_temp, 0, 5}, + {"Charger", TEMP_SENSOR_TYPE_BOARD, board_get_charger_temp, 1, 1}, +}; +BUILD_ASSERT(ARRAY_SIZE(temp_sensors) == TEMP_SENSOR_COUNT); + /* Called by APL power state machine when transitioning from G3 to S5 */ void chipset_pre_init_callback(void) { |