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drivers: sensor: npm1300_charger: Startup vbus current limit

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The vbus current limit is now written to the vbus startup
register. It is now applied at all times and does not need
to be updated on charger insertion.

Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
This commit is contained in:
Andy Sinclair 2023-06-06 09:38:32 +01:00 • committed by Carles Cufí
commit f93da64ec8
1 changed files with 3 additions and 14 deletions
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17
drivers/sensor/npm1300_charger/npm1300_charger.c
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@ -58,8 +58,7 @@ struct npm1300_charger_data {
#define ADC_OFFSET_IBAT_EN 0x24U
/* nPM1300 VBUS register offsets */
#define VBUS_OFFSET_TASK_UPDATE 0x00U
#define VBUS_OFFSET_ILIM 0x01U
#define VBUS_OFFSET_ILIMSTARTUP 0x02U
#define VBUS_OFFSET_STATUS 0x07U
/* Ibat status */
@ -198,7 +197,6 @@ int npm1300_charger_sample_fetch(const struct device *dev, enum sensor_channel c
const struct npm1300_charger_config *const config = dev->config;
struct npm1300_charger_data *data = dev->data;
struct adc_results_t results;
bool last_vbus;
int ret;
/* Read charge status and error reason */
@ -236,21 +234,12 @@ int npm1300_charger_sample_fetch(const struct device *dev, enum sensor_channel c
return ret;
}
/* Read vbus status, and set SW current limit on new vbus detection */
last_vbus = (data->vbus_stat & 1U) != 0U;
/* Read vbus status */
ret = mfd_npm1300_reg_read(config->mfd, VBUS_BASE, VBUS_OFFSET_STATUS, &data->vbus_stat);
if (ret != 0) {
return ret;
}
if (!last_vbus && ((data->vbus_stat & 1U) != 0U)) {
ret = mfd_npm1300_reg_write(config->mfd, VBUS_BASE, VBUS_OFFSET_TASK_UPDATE, 1U);
if (ret != 0) {
return ret;
}
}
return ret;
}
@ -329,7 +318,7 @@ int npm1300_charger_init(const struct device *dev)
if (ret == -EINVAL) {
return ret;
}
ret = mfd_npm1300_reg_write(config->mfd, VBUS_BASE, VBUS_OFFSET_ILIM, idx);
ret = mfd_npm1300_reg_write(config->mfd, VBUS_BASE, VBUS_OFFSET_ILIMSTARTUP, idx);
if (ret != 0) {
return ret;
}