[PATCH 4/7] drm/exynos: add exynos_dp_panel driver registration to drm driver

[Ajay Kumar]

Register exynos_dp_panel before the list of exynos crtcs and
connectors are probed.

This is needed because exynos_dp_panel should be registered to
the drm_panel list via panel-exynos-dp probe, i.e much before
exynos_dp_bind calls of_drm_find_panel().

Signed-off-by: Ajay Kumar <ajaykumar.rs at samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_drv.c | 11 +++++++++++
 drivers/gpu/drm/exynos/exynos_drm_drv.h |  1 +
 2 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index 1d1c604..47266e7 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -560,12 +560,23 @@ static int exynos_drm_platform_probe(struct platform_device *pdev)
 		goto err_unregister_ipp;
 #endif
 
+#ifdef CONFIG_DRM_PANEL_EXYNOS_DP
+	ret = platform_driver_register(&exynos_dp_panel_driver);
+	if (ret < 0)
+		goto err_unregister_dp_panel;
+#endif
+
 	ret = component_master_add(&pdev->dev, &exynos_drm_ops);
 	if (ret < 0)
 		DRM_DEBUG_KMS("re-tried by last sub driver probed later.\n");
 
 	return 0;
 
+#ifdef CONFIG_DRM_PANEL_EXYNOS_DP
+	platform_driver_unregister(&exynos_dp_panel_driver);
+err_unregister_dp_panel:
+#endif
+
 #ifdef CONFIG_DRM_EXYNOS_IPP
 	exynos_platform_device_ipp_unregister();
 err_unregister_ipp:
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 257ce09..f606290 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -368,4 +368,5 @@ extern struct platform_driver fimc_driver;
 extern struct platform_driver rotator_driver;
 extern struct platform_driver gsc_driver;
 extern struct platform_driver ipp_driver;
+extern struct platform_driver exynos_dp_panel_driver;
 #endif
-- 
1.8.1.2