drm/exynos: support device tree for fimd

This adds the of_match_table to exynos-drm fimd driver to be probed from
the device tree.

Changelog v2:
- fix build error without CONFIG_OF.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 1e4ea96bbe3e..bf0d9baca2bc 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -17,6 +17,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/of_device.h>
 #include <linux/pm_runtime.h>
 
 #include <video/samsung_fimd.h>
@@ -106,9 +107,28 @@ struct fimd_context {
         struct exynos_drm_panel_info *panel;
 };
 
+#ifdef CONFIG_OF
+static const struct of_device_id fimd_driver_dt_match[] = {
+        { .compatible = "samsung,exynos4-fimd",
+          .data = &exynos4_fimd_driver_data },
+        { .compatible = "samsung,exynos5-fimd",
+          .data = &exynos5_fimd_driver_data },
+        {},
+};
+MODULE_DEVICE_TABLE(of, fimd_driver_dt_match);
+#endif
+
 static inline struct fimd_driver_data *drm_fimd_get_driver_data(
         struct platform_device *pdev)
 {
+#ifdef CONFIG_OF
+        const struct of_device_id *of_id =
+                        of_match_device(fimd_driver_dt_match, &pdev->dev);
+
+        if (of_id)
+                return (struct fimd_driver_data *)of_id->data;
+#endif
+
         return (struct fimd_driver_data *)
                 platform_get_device_id(pdev)->driver_data;
 }
@@ -1091,5 +1111,6 @@ struct platform_driver fimd_driver = {
                 .name   = "exynos4-fb",
                 .owner  = THIS_MODULE,
                 .pm     = &fimd_pm_ops,
+                .of_match_table = of_match_ptr(fimd_driver_dt_match),
         },
 };