1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/gpu/arm/midgard/platform/devicetree/scmi_mali_opp.c b/drivers/gpu/arm/midgard/platform/devicetree/scmi_mali_opp.c
new file mode 100644
index 000000000000..2564416ecef3
--- /dev/null
+++ b/drivers/gpu/arm/midgard/platform/devicetree/scmi_mali_opp.c
@@ -0,0 +1,58 @@
+/*
+ *
+ * (C) COPYRIGHT 2017 ARM Limited. All rights reserved.
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms
+ * of such GNU licence.
+ *
+ * A copy of the licence is included with the program, and can also be obtained
+ * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_opp.h>
+#include <linux/scmi_protocol.h>
+#include <linux/version.h>
+
+static int scmi_gpu_opps_probe(struct platform_device *pdev)
+{
+	struct device_node *np;
+	struct platform_device *gpu_pdev;
+	int err;
+
+	np = of_find_node_by_name(NULL, "gpu");
+	if (!np) {
+		dev_err(&pdev->dev, "Failed to find DT entry for Mali\n");
+		return -EFAULT;
+	}
+
+	gpu_pdev = of_find_device_by_node(np);
+	if (!gpu_pdev) {
+		dev_err(&pdev->dev, "Failed to find device for Mali\n");
+		of_node_put(np);
+		return -EFAULT;
+	}
+
+	of_node_put(np);
+
+	return err;
+}
+
+
+static struct platform_driver scmi_gpu_opp_driver = {
+	.driver = {
+		.name = "scmi_gpu_opp",
+	},
+	.probe = scmi_gpu_opps_probe,
+};
+module_platform_driver(scmi_gpu_opp_driver);
+
+MODULE_AUTHOR("Amit Kachhap <amit.kachhap@arm.com>");
+MODULE_DESCRIPTION("ARM SCMI GPU opp driver");
+MODULE_LICENSE("GPL v2");