drm/exynos: Constify exynos_drm_crtc_ops

The Exynos DRM code does not modify the ops provided by CRTC driver in
exynos_drm_crtc_create() call.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos7_drm_decon.c

@@ -710,7 +710,7 @@ static void decon_dpms(struct exynos_drm_crtc *crtc, int mode)
 	}
 }
 
-static struct exynos_drm_crtc_ops decon_crtc_ops = {
+static const struct exynos_drm_crtc_ops decon_crtc_ops = {
 	.dpms = decon_dpms,
 	.mode_fixup = decon_mode_fixup,
 	.commit = decon_commit,

drivers/gpu/drm/exynos/exynos_drm_crtc.c

@@ -241,7 +241,7 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
 					struct drm_plane *plane,
 					int pipe,
 					enum exynos_drm_output_type type,
-					       struct exynos_drm_crtc_ops *ops,
+					const struct exynos_drm_crtc_ops *ops,
 					void *ctx)
 {
 	struct exynos_drm_crtc *exynos_crtc;

drivers/gpu/drm/exynos/exynos_drm_crtc.h

@@ -21,7 +21,7 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
 					struct drm_plane *plane,
 					int pipe,
 					enum exynos_drm_output_type type,
-					       struct exynos_drm_crtc_ops *ops,
+					const struct exynos_drm_crtc_ops *ops,
 					void *context);
 int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int pipe);
 void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int pipe);

drivers/gpu/drm/exynos/exynos_drm_drv.h

@@ -226,7 +226,7 @@ struct exynos_drm_crtc {
 	unsigned int			dpms;
 	wait_queue_head_t		pending_flip_queue;
 	struct drm_pending_vblank_event	*event;
-	struct exynos_drm_crtc_ops	*ops;
+	const struct exynos_drm_crtc_ops	*ops;
 	void				*ctx;
 };
 

drivers/gpu/drm/exynos/exynos_drm_fimd.c

@@ -962,7 +962,7 @@ static void fimd_dp_clock_enable(struct exynos_drm_crtc *crtc, bool enable)
 	writel(DP_MIE_CLK_DP_ENABLE, ctx->regs + DP_MIE_CLKCON);
 }
 
-static struct exynos_drm_crtc_ops fimd_crtc_ops = {
+static const struct exynos_drm_crtc_ops fimd_crtc_ops = {
 	.dpms = fimd_dpms,
 	.mode_fixup = fimd_mode_fixup,
 	.commit = fimd_commit,

drivers/gpu/drm/exynos/exynos_drm_vidi.c

@@ -217,7 +217,7 @@ static int vidi_ctx_initialize(struct vidi_context *ctx,
 	return 0;
 }
 
-static struct exynos_drm_crtc_ops vidi_crtc_ops = {
+static const struct exynos_drm_crtc_ops vidi_crtc_ops = {
 	.dpms = vidi_dpms,
 	.enable_vblank = vidi_enable_vblank,
 	.disable_vblank = vidi_disable_vblank,

drivers/gpu/drm/exynos/exynos_mixer.c

@@ -1129,7 +1129,7 @@ int mixer_check_mode(struct drm_display_mode *mode)
 	return -EINVAL;
 }
 
-static struct exynos_drm_crtc_ops mixer_crtc_ops = {
+static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
 	.dpms			= mixer_dpms,
 	.enable_vblank		= mixer_enable_vblank,
 	.disable_vblank		= mixer_disable_vblank,