fix(kscan): Allow composite driver to handle missing children.
For split keyboards using an IO expander over TRRS/i2c, if the
right half isn't connected, we should be able to gracefully
fallback to the left side still working.
@@ -41,7 +41,12 @@ static int kscan_composite_enable_callback(const struct device *dev) {
for (int i = 0; i < ARRAY_SIZE(kscan_composite_children); i++) {
const struct kscan_composite_child_config *cfg = &kscan_composite_children[i];
- kscan_enable_callback(device_get_binding(cfg->label));
+ const struct device *dev = device_get_binding(cfg->label);
+ if (!dev) {
+ LOG_WRN("Failed to load child kscan device %s", log_strdup(cfg->label));
+ continue;
+ }
+ kscan_enable_callback(dev);
}
return 0;
}
@@ -50,7 +55,12 @@ static int kscan_composite_disable_callback(const struct device *dev) {
for (int i = 0; i < ARRAY_SIZE(kscan_composite_children); i++) {
const struct kscan_composite_child_config *cfg = &kscan_composite_children[i];
- kscan_disable_callback(device_get_binding(cfg->label));
+ const struct device *dev = device_get_binding(cfg->label);
+ if (!dev) {
+ LOG_WRN("Failed to load child kscan device %s", log_strdup(cfg->label));
+ continue;
+ }
+ kscan_disable_callback(dev);
}
return 0;
}
