From: Icenowy Zheng Date: Sat, 31 May 2025 12:11:40 +0000 (+0800) Subject: drm/mediatek: only announce AFBC if really supported X-Git-Tag: v6.16-rc7~29^2~1^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8d121a82fa564e0c8bd86ce4ec56b2a43b9b016e;p=thirdparty%2Flinux.git drm/mediatek: only announce AFBC if really supported Currently even the SoC's OVL does not declare the support of AFBC, AFBC is still announced to the userspace within the IN_FORMATS blob, which breaks modern Wayland compositors like KWin Wayland and others. Gate passing modifiers to drm_universal_plane_init() behind querying the driver of the hardware block for AFBC support. Fixes: c410fa9b07c3 ("drm/mediatek: Add AFBC support to Mediatek DRM driver") Signed-off-by: Icenowy Zheng Reviewed-by: CK Hu Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20250531121140.387661-1-uwu@icenowy.me/ Signed-off-by: Chun-Kuang Hu --- diff --git a/drivers/gpu/drm/mediatek/mtk_crtc.c b/drivers/gpu/drm/mediatek/mtk_crtc.c index 6916c8925b41..bc7527542fdc 100644 --- a/drivers/gpu/drm/mediatek/mtk_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_crtc.c @@ -963,7 +963,8 @@ static int mtk_crtc_init_comp_planes(struct drm_device *drm_dev, mtk_ddp_comp_supported_rotations(comp), mtk_ddp_comp_get_blend_modes(comp), mtk_ddp_comp_get_formats(comp), - mtk_ddp_comp_get_num_formats(comp), i); + mtk_ddp_comp_get_num_formats(comp), + mtk_ddp_comp_is_afbc_supported(comp), i); if (ret) return ret; diff --git a/drivers/gpu/drm/mediatek/mtk_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_ddp_comp.c index edc6417639e6..ac6620e10262 100644 --- a/drivers/gpu/drm/mediatek/mtk_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_ddp_comp.c @@ -366,6 +366,7 @@ static const struct mtk_ddp_comp_funcs ddp_ovl = { .get_blend_modes = mtk_ovl_get_blend_modes, .get_formats = mtk_ovl_get_formats, .get_num_formats = mtk_ovl_get_num_formats, + .is_afbc_supported = mtk_ovl_is_afbc_supported, }; static const struct mtk_ddp_comp_funcs ddp_postmask = { diff --git a/drivers/gpu/drm/mediatek/mtk_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_ddp_comp.h index 39720b27f4e9..7289b3dcf22f 100644 --- a/drivers/gpu/drm/mediatek/mtk_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_ddp_comp.h @@ -83,6 +83,7 @@ struct mtk_ddp_comp_funcs { u32 (*get_blend_modes)(struct device *dev); const u32 *(*get_formats)(struct device *dev); size_t (*get_num_formats)(struct device *dev); + bool (*is_afbc_supported)(struct device *dev); void (*connect)(struct device *dev, struct device *mmsys_dev, unsigned int next); void (*disconnect)(struct device *dev, struct device *mmsys_dev, unsigned int next); void (*add)(struct device *dev, struct mtk_mutex *mutex); @@ -294,6 +295,14 @@ size_t mtk_ddp_comp_get_num_formats(struct mtk_ddp_comp *comp) return 0; } +static inline bool mtk_ddp_comp_is_afbc_supported(struct mtk_ddp_comp *comp) +{ + if (comp->funcs && comp->funcs->is_afbc_supported) + return comp->funcs->is_afbc_supported(comp->dev); + + return false; +} + static inline bool mtk_ddp_comp_add(struct mtk_ddp_comp *comp, struct mtk_mutex *mutex) { if (comp->funcs && comp->funcs->add) { diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h index 04217a36939c..679d413bf10b 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h @@ -106,6 +106,7 @@ void mtk_ovl_disable_vblank(struct device *dev); u32 mtk_ovl_get_blend_modes(struct device *dev); const u32 *mtk_ovl_get_formats(struct device *dev); size_t mtk_ovl_get_num_formats(struct device *dev); +bool mtk_ovl_is_afbc_supported(struct device *dev); void mtk_ovl_adaptor_add_comp(struct device *dev, struct mtk_mutex *mutex); void mtk_ovl_adaptor_remove_comp(struct device *dev, struct mtk_mutex *mutex); diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index d0581c4e3c99..e0236353d499 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -236,6 +236,13 @@ size_t mtk_ovl_get_num_formats(struct device *dev) return ovl->data->num_formats; } +bool mtk_ovl_is_afbc_supported(struct device *dev) +{ + struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); + + return ovl->data->supports_afbc; +} + int mtk_ovl_clk_enable(struct device *dev) { struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); diff --git a/drivers/gpu/drm/mediatek/mtk_plane.c b/drivers/gpu/drm/mediatek/mtk_plane.c index 59edbe26f01e..cbc4f37da8ba 100644 --- a/drivers/gpu/drm/mediatek/mtk_plane.c +++ b/drivers/gpu/drm/mediatek/mtk_plane.c @@ -326,7 +326,8 @@ static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = { int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane, unsigned long possible_crtcs, enum drm_plane_type type, unsigned int supported_rotations, const u32 blend_modes, - const u32 *formats, size_t num_formats, unsigned int plane_idx) + const u32 *formats, size_t num_formats, + bool supports_afbc, unsigned int plane_idx) { int err; @@ -337,7 +338,9 @@ int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane, err = drm_universal_plane_init(dev, plane, possible_crtcs, &mtk_plane_funcs, formats, - num_formats, modifiers, type, NULL); + num_formats, + supports_afbc ? modifiers : NULL, + type, NULL); if (err) { DRM_ERROR("failed to initialize plane\n"); return err; diff --git a/drivers/gpu/drm/mediatek/mtk_plane.h b/drivers/gpu/drm/mediatek/mtk_plane.h index 3b13b89989c7..95c5fa5295d8 100644 --- a/drivers/gpu/drm/mediatek/mtk_plane.h +++ b/drivers/gpu/drm/mediatek/mtk_plane.h @@ -49,5 +49,6 @@ to_mtk_plane_state(struct drm_plane_state *state) int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane, unsigned long possible_crtcs, enum drm_plane_type type, unsigned int supported_rotations, const u32 blend_modes, - const u32 *formats, size_t num_formats, unsigned int plane_idx); + const u32 *formats, size_t num_formats, + bool supports_afbc, unsigned int plane_idx); #endif