drm/exynos: dpi: Add support for panel prepare and unprepare routines

Modify exynos_dpi driver to support the new panel calls:
prepare and unprepare.

Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
index 482127f633c5..f8531533fbf3 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dpi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
@@ -125,14 +125,18 @@ static int exynos_dpi_create_connector(struct exynos_drm_display *display,
 
 static void exynos_dpi_poweron(struct exynos_dpi *ctx)
 {
-        if (ctx->panel)
+        if (ctx->panel) {
+                drm_panel_prepare(ctx->panel);
                 drm_panel_enable(ctx->panel);
+        }
 }
 
 static void exynos_dpi_poweroff(struct exynos_dpi *ctx)
 {
-        if (ctx->panel)
+        if (ctx->panel) {
                 drm_panel_disable(ctx->panel);
+                drm_panel_unprepare(ctx->panel);
+        }
 }
 
 static void exynos_dpi_dpms(struct exynos_drm_display *display, int mode)