static int simple_pm_bus_probe(struct platform_device *pdev)
{
- struct device_node *np = pdev->dev.of_node;
+ const struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ const struct of_device_id *match;
+
+ /*
+ * Allow user to use driver_override to bind this driver to a
+ * transparent bus device which has a different compatible string
+ * that's not listed in simple_pm_bus_of_match. We don't want to do any
+ * of the simple-pm-bus tasks for these devices, so return early.
+ */
+ if (pdev->driver_override)
+ return 0;
+
+ match = of_match_device(dev->driver->of_match_table, dev);
+ /*
+ * These are transparent bus devices (not simple-pm-bus matches) that
+ * have their child nodes populated automatically. So, don't need to
+ * do anything more. We only match with the device if this driver is
+ * the most specific match because we don't want to incorrectly bind to
+ * a device that has a more specific driver.
+ */
+ if (match && match->data) {
+ if (of_property_match_string(np, "compatible", match->compatible) == 0)
+ return 0;
+ else
+ return -ENODEV;
+ }
dev_dbg(&pdev->dev, "%s\n", __func__);
static int simple_pm_bus_remove(struct platform_device *pdev)
{
+ const void *data = of_device_get_match_data(&pdev->dev);
+
+ if (pdev->driver_override || data)
+ return 0;
+
dev_dbg(&pdev->dev, "%s\n", __func__);
pm_runtime_disable(&pdev->dev);
return 0;
}
+#define ONLY_BUS ((void *) 1) /* Match if the device is only a bus. */
+
static const struct of_device_id simple_pm_bus_of_match[] = {
{ .compatible = "simple-pm-bus", },
+ { .compatible = "simple-bus", .data = ONLY_BUS },
+ { .compatible = "simple-mfd", .data = ONLY_BUS },
+ { .compatible = "isa", .data = ONLY_BUS },
+ { .compatible = "arm,amba-bus", .data = ONLY_BUS },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, simple_pm_bus_of_match);