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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /zephyr/test/drivers/src/thermistor.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-release-R99-14469.B-ish.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'zephyr/test/drivers/src/thermistor.c')
-rw-r--r--zephyr/test/drivers/src/thermistor.c295
1 files changed, 0 insertions, 295 deletions
diff --git a/zephyr/test/drivers/src/thermistor.c b/zephyr/test/drivers/src/thermistor.c
deleted file mode 100644
index a7137d5f19..0000000000
--- a/zephyr/test/drivers/src/thermistor.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/* Copyright 2021 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.
- */
-
-#include <zephyr.h>
-#include <ztest.h>
-#include <drivers/adc.h>
-#include <drivers/adc/adc_emul.h>
-#include <drivers/gpio.h>
-#include <drivers/gpio/gpio_emul.h>
-#include <temp_sensor.h>
-
-#include "common.h"
-#include "../driver/temp_sensor/thermistor.h"
-#include "temp_sensor/temp_sensor.h"
-
-
-#define GPIO_PG_EC_DSW_PWROK_PATH DT_PATH(named_gpios, pg_ec_dsw_pwrok)
-#define GPIO_PG_EC_DSW_PWROK_PORT DT_GPIO_PIN(GPIO_PG_EC_DSW_PWROK_PATH, gpios)
-
-#define ADC_DEVICE_NODE DT_NODELABEL(adc0)
-
-/* TODO replace counting macros with DT macro when
- * https://github.com/zephyrproject-rtos/zephyr/issues/38715 lands
- */
-#define _ACCUMULATOR(x)
-#define NAMED_TEMP_SENSORS_SIZE \
- DT_FOREACH_CHILD(DT_PATH(named_temp_sensors), _ACCUMULATOR) \
- 0
-#define TEMP_SENSORS_ENABLED_SIZE \
- DT_FOREACH_STATUS_OKAY(cros_ec_temp_sensor, _ACCUMULATOR) 0
-
-/* Conversion of temperature doesn't need to be 100% accurate */
-#define TEMP_EPS 2
-
-#define A_VALID_VOLTAGE 1000
-/**
- * Test if get temp function return expected error when ADC is not powered
- * (indicated as GPIO pin set to low) and return success after powering on ADC.
- */
-static void test_thermistor_power_pin(void)
-{
- int temp;
- int sensor_idx;
-
- const struct device *gpio_dev =
- DEVICE_DT_GET(DT_GPIO_CTLR(GPIO_PG_EC_DSW_PWROK_PATH, gpios));
- const struct device *adc_dev = DEVICE_DT_GET(ADC_DEVICE_NODE);
-
- zassert_not_null(gpio_dev, "Cannot get GPIO device");
- zassert_not_null(adc_dev, "Cannot get ADC device");
-
- /* Make sure that ADC return a valid value */
- for (sensor_idx = 0; sensor_idx < NAMED_TEMP_SENSORS_SIZE;
- sensor_idx++) {
- const struct temp_sensor_t *sensor = &temp_sensors[sensor_idx];
-
- zassert_ok(adc_emul_const_value_set(adc_dev,
- sensor->idx,
- A_VALID_VOLTAGE),
- "adc_emul_value_func_set() failed on %s",
- sensor->name);
- }
-
- /* pg_ec_dsw_pwrok = 0 means ADC is not powered. */
- zassert_ok(gpio_emul_input_set(gpio_dev, GPIO_PG_EC_DSW_PWROK_PORT, 0),
- NULL);
-
- for (sensor_idx = 0; sensor_idx < NAMED_TEMP_SENSORS_SIZE;
- sensor_idx++) {
- const struct temp_sensor_t *sensor = &temp_sensors[sensor_idx];
-
- zassert_equal(EC_ERROR_NOT_POWERED, sensor->read(sensor, &temp),
- "%s failed", sensor->name);
- }
-
- /* pg_ec_dsw_pwrok = 1 means ADC is powered. */
- zassert_ok(gpio_emul_input_set(gpio_dev, GPIO_PG_EC_DSW_PWROK_PORT, 1),
- NULL);
-
- for (sensor_idx = 0; sensor_idx < NAMED_TEMP_SENSORS_SIZE;
- sensor_idx++) {
- const struct temp_sensor_t *sensor = &temp_sensors[sensor_idx];
-
- zassert_equal(EC_SUCCESS, sensor->read(sensor, &temp),
- "%s failed", sensor->name);
- }
-}
-
-/* Simple ADC emulator custom function which always return error */
-static int adc_error_func(const struct device *dev, unsigned int channel,
- void *param, uint32_t *result)
-{
- return -EINVAL;
-}
-
-/** Test if get temp function return expected error on ADC malfunction */
-static void test_thermistor_adc_read_error(void)
-{
- int temp;
- int sensor_idx;
-
- const struct device *adc_dev = DEVICE_DT_GET(ADC_DEVICE_NODE);
-
- zassert_not_null(adc_dev, "Cannot get ADC device");
-
- /* Return error on all ADC channels */
- for (sensor_idx = 0; sensor_idx < NAMED_TEMP_SENSORS_SIZE;
- sensor_idx++) {
- const struct temp_sensor_t *sensor = &temp_sensors[sensor_idx];
-
- zassert_ok(adc_emul_value_func_set(adc_dev, sensor->idx,
- adc_error_func, NULL),
- "adc_emul_value_func_set() failed on %s",
- sensor->name);
- }
-
- for (sensor_idx = 0; sensor_idx < NAMED_TEMP_SENSORS_SIZE;
- sensor_idx++) {
- const struct temp_sensor_t *sensor = &temp_sensors[sensor_idx];
-
- zassert_equal(EC_ERROR_UNKNOWN, sensor->read(sensor, &temp),
- "%s failed", sensor->name);
- }
-}
-
-/** Get resistance of thermistor for given temperature */
-static int resistance_47kohm_B4050(int t)
-{
- /* Thermistor manufacturer resistance lookup table*/
- int r_table[] = {
- 155700, 147900, 140600, 133700, 127200, /* 0*C - 4*C */
- 121000, 115100, 109600, 104300, 99310, /* 5*C - 9*C */
- 94600, 90130, 85890, 81870, 78070, /* 10*C - 14*C */
- 74450, 71020, 67770, 64680, 61750, /* 15*C - 19*C */
- 58970, 56320, 53810, 51430, 49160, /* 20*C - 24*C */
- 47000, 44950, 42990, 41130, 39360, /* 25*C - 29*C */
- 37680, 36070, 34540, 33080, 31690, /* 30*C - 34*C */
- 30360, 29100, 27900, 26750, 25650, /* 35*C - 39*C */
- 24610, 23610, 22660, 21750, 20880, /* 40*C - 44*C */
- 20050, 19260, 18500, 17780, 17090, /* 45*C - 49*C */
- 16430, 15800, 15200, 14620, 14070, /* 50*C - 54*C */
- 13540, 13030, 12550, 12090, 11640, /* 55*C - 59*C */
- 11210, 10800, 10410, 10040, 9676, /* 60*C - 64*C */
- 9331, 8999, 8680, 8374, 8081, /* 65*C - 69*C */
- 7799, 7528, 7268, 7018, 6777, /* 70*C - 74*C */
- 6546, 6324, 6111, 5906, 5708, /* 75*C - 79*C */
- 5518, 5335, 5160, 4990, 4827, /* 80*C - 84*C */
- 4671, 4519, 4374, 4233, 4098, /* 85*C - 89*C */
- 3968, 3842, 3721, 3605, 3492, /* 90*C - 94*C */
- 3384, 3279, 3179, 3082, 2988, /* 95*C - 99*C */
- 2898 /* 100*C */
- };
-
- t -= 273;
- if (t < 0)
- return r_table[0] + 10000;
-
- if (t >= ARRAY_SIZE(r_table))
- return r_table[ARRAY_SIZE(r_table) - 1] - 100;
-
- return r_table[t];
-}
-
-/**
- * Calculate output voltage in voltage divider circuit using formula
- * Vout = Vs * r2 / (r1 + r2)
- */
-static int volt_divider(int vs, int r1, int r2)
-{
- return vs * r2 / (r1 + r2);
-}
-
-struct thermistor_state {
- const int v;
- const int r;
- int temp_expected;
-};
-
-/** ADC emulator function which calculate output voltage for given thermistor */
-static int adc_temperature_func(const struct device *dev, unsigned int channel,
- void *param, uint32_t *result)
-{
- struct thermistor_state *s = (struct thermistor_state *)param;
-
- *result = volt_divider(s->v,
- s->r,
- resistance_47kohm_B4050(s->temp_expected));
-
- return 0;
-}
-
-/** Test conversion from ADC raw value to temperature */
-static void do_thermistor_test(const struct temp_sensor_t *temp_sensor,
- int reference_mv, int reference_ohms)
-{
- int temp_expected;
- int temp;
-
- const struct device *adc_dev = DEVICE_DT_GET(ADC_DEVICE_NODE);
- struct thermistor_state state = {
- .v = reference_mv,
- .r = reference_ohms,
- };
-
- zassert_not_null(adc_dev, "Cannot get ADC device");
-
- /* Setup ADC channel */
- zassert_ok(adc_emul_value_func_set(adc_dev,
- temp_sensor->idx,
- adc_temperature_func, &state),
- "adc_emul_value_func_set() failed on %s", temp_sensor->name);
-
- /* Makes sure that reference voltage is correct for given thermistor */
- zassert_ok(adc_emul_ref_voltage_set(adc_dev, ADC_REF_INTERNAL, state.v),
- "adc_emul_ref_voltage_set() failed %s on ",
- temp_sensor->name);
-
- /* Test whole supported range from 0*C to 100*C (273*K to 373*K) */
- for (temp_expected = 273; temp_expected <= 373; temp_expected++) {
- state.temp_expected = temp_expected;
- zassert_equal(EC_SUCCESS, temp_sensor->read(temp_sensor, &temp),
- "failed on %s", temp_sensor->name);
- zassert_within(temp_expected, temp, TEMP_EPS,
- "Expected %d*K, got %d*K on %s", temp_expected,
- temp, temp_sensor->name);
- }
-
- /* Temperatures below 0*C should be reported as 0*C */
- state.temp_expected = -15 + 273;
- zassert_equal(EC_SUCCESS, temp_sensor->read(temp_sensor, &temp),
- "failed on %s", temp_sensor->name);
- zassert_equal(273, temp, "Expected %d*K, got %d*K on %s", 273, temp,
- temp_sensor->name);
-
- /* Temperatures above 100*C should be reported as 100*C */
- state.temp_expected = 115 + 273;
- zassert_equal(EC_SUCCESS, temp_sensor->read(temp_sensor, &temp),
- "failed on %s", temp_sensor->name);
- zassert_equal(373, temp, "Expected %d*K, got %d*K on %s", 373, temp,
- temp_sensor->name);
-}
-
-#define GET_THERMISTOR_REF_MV(node_id) \
- [ZSHIM_TEMP_SENSOR_ID(node_id)] = DT_PROP( \
- DT_PHANDLE(node_id, thermistor), steinhart_reference_mv),
-
-#define GET_THERMISTOR_REF_RES(node_id) \
- [ZSHIM_TEMP_SENSOR_ID(node_id)] = DT_PROP( \
- DT_PHANDLE(node_id, thermistor), steinhart_reference_res),
-
-static void test_thermistors_adc_temperature_conversion(void)
-{
- int sensor_idx;
-
- const static int reference_mv_arr[] = { DT_FOREACH_STATUS_OKAY(
- cros_temp_sensor, GET_THERMISTOR_REF_MV) };
- const static int reference_res_arr[] = { DT_FOREACH_STATUS_OKAY(
- cros_temp_sensor, GET_THERMISTOR_REF_RES) };
-
- for (sensor_idx = 0; sensor_idx < NAMED_TEMP_SENSORS_SIZE; sensor_idx++)
- do_thermistor_test(&temp_sensors[sensor_idx],
- reference_mv_arr[sensor_idx],
- reference_res_arr[sensor_idx]);
-}
-
-static void test_device_nodes_enabled(void)
-{
- zassert_equal(NAMED_TEMP_SENSORS_SIZE, TEMP_SENSORS_ENABLED_SIZE,
- "Temperature sensors in device tree and "
- "those enabled for test differ");
-
- /* Thermistor nodes being enabled are already tested by compilation. */
-}
-
-void test_suite_thermistor(void)
-{
- const struct device *dev =
- DEVICE_DT_GET(DT_GPIO_CTLR(GPIO_PG_EC_DSW_PWROK_PATH, gpios));
-
- zassert_not_null(dev, NULL);
- /* Before tests make sure that power pin is set. */
- zassert_ok(gpio_emul_input_set(dev, GPIO_PG_EC_DSW_PWROK_PORT, 1),
- NULL);
-
- ztest_test_suite(thermistor,
- ztest_user_unit_test(test_device_nodes_enabled),
- ztest_user_unit_test(test_thermistor_power_pin),
- ztest_user_unit_test(test_thermistor_adc_read_error),
- ztest_user_unit_test(
- test_thermistors_adc_temperature_conversion));
-
- ztest_run_test_suite(thermistor);
-}