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sensor: bme680: support power domains

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Support the BME680 being on a power domain, which may not be powered at
boot. For example, Nordic Thingy53.

Signed-off-by: Jordan Yates <jordan@embeint.com>
This commit is contained in:
Jordan Yates 2024-07-15 21:08:36 +10:00 • committed by Carles Cufí
commit 5953a26dc6
1 changed files with 37 additions and 13 deletions
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48
drivers/sensor/bosch/bme680/bme680.c
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@ -18,6 +18,7 @@
#include <zephyr/sys/__assert.h> #include <zephyr/sys/__assert.h>
#include <zephyr/drivers/sensor.h> #include <zephyr/drivers/sensor.h>
#include <zephyr/logging/log.h> #include <zephyr/logging/log.h>
#include <zephyr/pm/device.h>
#include "bme680.h" #include "bme680.h"
@ -375,17 +376,11 @@ static int bme680_read_compensation(const struct device *dev)
return 0; return 0;
} }
static int bme680_init(const struct device *dev) static int bme680_power_up(const struct device *dev)
{ {
struct bme680_data *data = dev->data; struct bme680_data *data = dev->data;
int err; int err;
err = bme680_bus_check(dev);
if (err < 0) {
LOG_ERR("Bus not ready for '%s'", dev->name);
return err;
}
#if BME680_BUS_SPI #if BME680_BUS_SPI
if (bme680_is_on_spi(dev)) { if (bme680_is_on_spi(dev)) {
uint8_t mem_page; uint8_t mem_page;
@ -426,8 +421,7 @@ static int bme680_init(const struct device *dev)
return err; return err;
} }
err = bme680_reg_write(dev, BME680_REG_CTRL_GAS_1, err = bme680_reg_write(dev, BME680_REG_CTRL_GAS_1, BME680_CTRL_GAS_1_VAL);
BME680_CTRL_GAS_1_VAL);
if (err < 0) { if (err < 0) {
return err; return err;
} }
@ -444,12 +438,41 @@ static int bme680_init(const struct device *dev)
return err; return err;
} }
err = bme680_reg_write(dev, BME680_REG_CTRL_MEAS, return bme680_reg_write(dev, BME680_REG_CTRL_MEAS, BME680_CTRL_MEAS_VAL);
BME680_CTRL_MEAS_VAL); }
static int bme680_pm_control(const struct device *dev, enum pm_device_action action)
{
int rc = 0;
switch (action) {
case PM_DEVICE_ACTION_SUSPEND:
case PM_DEVICE_ACTION_RESUME:
case PM_DEVICE_ACTION_TURN_OFF:
break;
case PM_DEVICE_ACTION_TURN_ON:
rc = bme680_power_up(dev);
break;
default:
return -ENOTSUP;
}
return rc;
}
static int bme680_init(const struct device *dev)
{
int err;
err = bme680_bus_check(dev);
if (err < 0) {
LOG_ERR("Bus not ready for '%s'", dev->name);
return err; return err;
} }
return pm_device_driver_init(dev, bme680_pm_control);
}
static const struct sensor_driver_api bme680_api_funcs = { static const struct sensor_driver_api bme680_api_funcs = {
.sample_fetch = bme680_sample_fetch, .sample_fetch = bme680_sample_fetch,
.channel_get = bme680_channel_get, .channel_get = bme680_channel_get,
@ -480,9 +503,10 @@ static const struct sensor_driver_api bme680_api_funcs = {
COND_CODE_1(DT_INST_ON_BUS(inst, spi), \ COND_CODE_1(DT_INST_ON_BUS(inst, spi), \
(BME680_CONFIG_SPI(inst)), \ (BME680_CONFIG_SPI(inst)), \
(BME680_CONFIG_I2C(inst))); \ (BME680_CONFIG_I2C(inst))); \
PM_DEVICE_DT_INST_DEFINE(inst, bme680_pm_control); \
SENSOR_DEVICE_DT_INST_DEFINE(inst, \ SENSOR_DEVICE_DT_INST_DEFINE(inst, \
bme680_init, \ bme680_init, \
NULL, \ PM_DEVICE_DT_INST_GET(inst), \
&bme680_data_##inst, \ &bme680_data_##inst, \
&bme680_config_##inst, \ &bme680_config_##inst, \
POST_KERNEL, \ POST_KERNEL, \