drm/panfrost: initial commit for adding panfrost driver

Signed-off-by: Marty E. Plummer <hanetzer@startmail.com>

drivers/gpu/drm/Kconfig

@@ -315,6 +315,8 @@ source "drivers/gpu/drm/tve200/Kconfig"
 
 source "drivers/gpu/drm/xen/Kconfig"
 
+source "drivers/gpu/drm/panfrost/Kconfig"
+
 # Keep legacy drivers last
 
 menuconfig DRM_LEGACY

drivers/gpu/drm/Makefile

@@ -107,3 +107,4 @@ obj-$(CONFIG_DRM_TINYDRM) += tinydrm/
 obj-$(CONFIG_DRM_PL111) += pl111/
 obj-$(CONFIG_DRM_TVE200) += tve200/
 obj-$(CONFIG_DRM_XEN) += xen/
+obj-$(CONFIG_DRM_PANFROST) += panfrost/

drivers/gpu/drm/panfrost/Kconfig

+config DRM_PANFROST
+	tristate "Panfrost (DRM support for ARM Mali t760/t860 GPU)"
+	depends on DRM
+	depends on ARCH_ROCKCHIP
+	help
+	  DRM driver for ARM Mali t760/t860 GPUs.

drivers/gpu/drm/panfrost/Makefile

+panfrost-y := \
+	panfrost_drv.o
+
+obj-$(CONFIG_DRM_PANFROST) += panfrost.o

drivers/gpu/drm/panfrost/panfrost_drv.c

+// SPDX-License-Identifier:	GPL-2.0
+/* Copyright 2018 Panfrost Team */
+
+#include <linux/module.h>
+#include <linux/of_platform.h>
+
+static int panfrost_pdev_probe(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static int panfrost_pdev_remove(struct platform_device *pdev)
+{
+	return 0;
+}
+
+static const struct of_device_id dt_match[] = {
+	{ .compatible = "arm,mali-t760" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, dt_match);
+
+static struct platform_driver panfrost_platform_driver = {
+	.probe		= panfrost_pdev_probe,
+	.remove		= panfrost_pdev_remove,
+	.driver		= {
+		.name	= "panfrost",
+		.of_match_table = dt_match,
+	},
+};
+
+static int __init panfrost_init(void)
+{
+	int ret;
+
+	ret = platform_device_register(&panfrost_platform_driver);
+
+	return ret;
+}
+module_init(panfrost_init);
+
+static void __exit panfrost_exit(void)
+{
+	platform_device_unregister(&panfrost_platform_driver);
+}
+module_exit(panfrost_exit);
+
+MODULE_AUTHOR("Panfrost Project Developers");
+MODULE_DESCRIPTION("Panfrost DRM Driver");
+MODULE_LICENSE("GPL v2");