diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2019-10-24 10:14:03 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2019-10-24 16:12:36 +0200 |
| commit | ecad80f0865d69c8de37c7415dbf66ba372f2ca1 (patch) | |
| tree | d0740c34701ee2861c286eaaed035a19e91142be | |
| parent | eddc0acfed094293a0ee5130cc8cd2b97be8ee84 (diff) | |
| download | linux-ecad80f0865d69c8de37c7415dbf66ba372f2ca1.tar.bz2 | |
drm/hisilicon/hibmc: Use GEM VRAM's prepare_fb() and cleanup_fb() helpers
This patch implements prepare_fb() and cleanup_fb() in hibmc with the
GEM VRAM helpers. In the current code, pinning the BO is performed by
hibmc_plane_atomic_update(), where the operation does not belong.
This patch also fixes a bug where the pinned BO was never unpinned.
Pinning multiple BOs would have exhaused the available VRAM and further
pin operations would have failed, leaving the display in a corrupt
state.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191024081404.6978-4-tzimmermann@suse.de
| -rw-r--r-- | drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c index cc4c41748cfb..6527a97f68a3 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c @@ -96,7 +96,6 @@ static void hibmc_plane_atomic_update(struct drm_plane *plane, { struct drm_plane_state *state = plane->state; u32 reg; - int ret; s64 gpu_addr = 0; unsigned int line_l; struct hibmc_drm_private *priv = plane->dev->dev_private; @@ -109,16 +108,9 @@ static void hibmc_plane_atomic_update(struct drm_plane *plane, hibmc_fb = to_hibmc_framebuffer(state->fb); gbo = drm_gem_vram_of_gem(hibmc_fb->obj); - ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM); - if (ret) { - DRM_ERROR("failed to pin bo: %d", ret); - return; - } gpu_addr = drm_gem_vram_offset(gbo); - if (gpu_addr < 0) { - drm_gem_vram_unpin(gbo); - return; - } + if (WARN_ON_ONCE(gpu_addr < 0)) + return; /* Bug: we didn't pin the BO to VRAM in prepare_fb. */ writel(gpu_addr, priv->mmio + HIBMC_CRT_FB_ADDRESS); @@ -157,6 +149,8 @@ static struct drm_plane_funcs hibmc_plane_funcs = { }; static const struct drm_plane_helper_funcs hibmc_plane_helper_funcs = { + .prepare_fb = drm_gem_vram_plane_helper_prepare_fb, + .cleanup_fb = drm_gem_vram_plane_helper_cleanup_fb, .atomic_check = hibmc_plane_atomic_check, .atomic_update = hibmc_plane_atomic_update, }; |