drm: exynos: use crtc helper drm_crtc_from_index()

Use drm_crtc_from_index() to find drm_crtc for given index, so that we
do not need to maintain a pointer array in struct exynos_drm_private.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1483961145-18453-2-git-send-email-shawnguo@kernel.org

2 files changed, 2 insertions, 14 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index 2530bf57716a..309c8ee52524 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -109,9 +109,6 @@ static const struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
 static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
 {
         struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
-        struct exynos_drm_private *private = crtc->dev->dev_private;
-
-        private->crtc[exynos_crtc->pipe] = NULL;
 
         drm_crtc_cleanup(crtc);
         kfree(exynos_crtc);
@@ -134,7 +131,6 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
                                         void *ctx)
 {
         struct exynos_drm_crtc *exynos_crtc;
-        struct exynos_drm_private *private = drm_dev->dev_private;
         struct drm_crtc *crtc;
         int ret;
 
@@ -149,8 +145,6 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
 
         crtc = &exynos_crtc->base;
 
-        private->crtc[pipe] = crtc;
-
         ret = drm_crtc_init_with_planes(drm_dev, crtc, plane, NULL,
                                         &exynos_crtc_funcs, NULL);
         if (ret < 0)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 80c4d5b81689..cf6e08cb35a7 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -211,12 +211,6 @@ struct drm_exynos_file_private {
 struct exynos_drm_private {
         struct drm_fb_helper *fb_helper;
 
-        /*
-         * created crtc object would be contained at this array and
-         * this array is used to be aware of which crtc did it request vblank.
-         */
-        struct drm_crtc *crtc[MAX_CRTC];
-
         struct device *dma_dev;
         void *mapping;
 
@@ -231,9 +225,9 @@ struct exynos_drm_private {
 static inline struct exynos_drm_crtc *
 exynos_drm_crtc_from_pipe(struct drm_device *dev, int pipe)
 {
-        struct exynos_drm_private *private = dev->dev_private;
+        struct drm_crtc *crtc = drm_crtc_from_index(dev, pipe);
 
-        return to_exynos_crtc(private->crtc[pipe]);
+        return to_exynos_crtc(crtc);
 }
 
 static inline struct device *to_dma_dev(struct drm_device *dev)