Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / bus / simple-pm-bus.c

diff --git a/kernel/drivers/bus/simple-pm-bus.c b/kernel/drivers/bus/simple-pm-bus.c
new file mode 100644 (file)
index 0000000..c5eb46c
--- /dev/null
+++ b/kernel/drivers/bus/simple-pm-bus.c
@@ -0,0 +1,58 @@
+/*
+ * Simple Power-Managed Bus Driver
+ *
+ * Copyright (C) 2014-2015 Glider bvba
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+
+
+static int simple_pm_bus_probe(struct platform_device *pdev)
+{
+       struct device_node *np = pdev->dev.of_node;
+
+       dev_dbg(&pdev->dev, "%s\n", __func__);
+
+       pm_runtime_enable(&pdev->dev);
+
+       if (np)
+               of_platform_populate(np, NULL, NULL, &pdev->dev);
+
+       return 0;
+}
+
+static int simple_pm_bus_remove(struct platform_device *pdev)
+{
+       dev_dbg(&pdev->dev, "%s\n", __func__);
+
+       pm_runtime_disable(&pdev->dev);
+       return 0;
+}
+
+static const struct of_device_id simple_pm_bus_of_match[] = {
+       { .compatible = "simple-pm-bus", },
+       { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, simple_pm_bus_of_match);
+
+static struct platform_driver simple_pm_bus_driver = {
+       .probe = simple_pm_bus_probe,
+       .remove = simple_pm_bus_remove,
+       .driver = {
+               .name = "simple-pm-bus",
+               .of_match_table = simple_pm_bus_of_match,
+       },
+};
+
+module_platform_driver(simple_pm_bus_driver);
+
+MODULE_DESCRIPTION("Simple Power-Managed Bus Driver");
+MODULE_AUTHOR("Geert Uytterhoeven <geert+renesas@glider.be>");
+MODULE_LICENSE("GPL v2");