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Mon, 20 Apr 2026 12:11:34 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id aA8hMPYX5mkGZQAAD6G6ig (envelope-from ); Mon, 20 Apr 2026 12:11:34 +0000 From: Thomas Zimmermann To: xinliang.liu@linaro.org, tiantao6@hisilicon.com, kong.kongxinwei@hisilicon.com, sumit.semwal@linaro.org, yongqin.liu@linaro.org, jstultz@google.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, airlied@gmail.com, simona@ffwll.ch Cc: dri-devel@lists.freedesktop.org, Thomas Zimmermann , Yongbang Shi , Rongrong Zou , Sean Paul , Dmitry Baryshkov , Baihan Li , stable@vger.kernel.org Subject: [PATCH v2 2/4] drm/hibmc: Fix list of formats on the primary plane Date: Mon, 20 Apr 2026 14:09:58 +0200 Message-ID: <20260420121130.200133-3-tzimmermann@suse.de> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260420121130.200133-1-tzimmermann@suse.de> References: <20260420121130.200133-1-tzimmermann@suse.de> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-3.01 / 50.00]; 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SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; TO_DN_SOME(0.00)[]; FREEMAIL_CC(0.00)[lists.freedesktop.org,suse.de,huawei.com,gmail.com,chromium.org,kernel.org,vger.kernel.org]; FREEMAIL_ENVRCPT(0.00)[gmail.com] X-Rspamd-Action: no action X-Spam-Flag: NO X-Spam-Score: -3.01 X-Spam-Level: X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Rspamd-Queue-Id: 4F7765BD20 Remove all formats from the primary plane that are unsupported for various reasons. * Formats with alpha channel: planes should not announce alpha channels unless they support transparency. There's no transparency support in the primary plane's implementation. * Formats with BGR order. The common format is in RGB channel order. There's no BGR support in the primary plane's implementation. * RGB888: atomic_update programs the format from cpp[0] * 8 / 16. For RGB888's cpp value of 3 this returns 1.5; rounded to 1. Programming the value of 1 to HIBMC_CRT_DISP_CTL_FORMAT sets up RGB565. Hence, the output is distorted. This can be tested by booting with video=1024x768-24. Removing all unsupported formats leaves XRGB8888 and RGB565. Both of which are supported and work correctly. Signed-off-by: Thomas Zimmermann Fixes: da52605eea8f ("drm/hisilicon/hibmc: Add support for display engine") Reviewed-by: Yongbang Shi Cc: Rongrong Zou Cc: Sean Paul Cc: Xinliang Liu Cc: Dmitry Baryshkov Cc: Yongbang Shi Cc: Baihan Li Cc: # v4.10+ --- drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c index 8fa2a95bcdd1..c4f9ebd9250d 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c @@ -118,10 +118,8 @@ static void hibmc_plane_atomic_update(struct drm_plane *plane, } static const u32 channel_formats1[] = { - DRM_FORMAT_RGB565, DRM_FORMAT_BGR565, DRM_FORMAT_RGB888, - DRM_FORMAT_BGR888, DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888, - DRM_FORMAT_RGBA8888, DRM_FORMAT_BGRA8888, DRM_FORMAT_ARGB8888, - DRM_FORMAT_ABGR8888 + DRM_FORMAT_XRGB8888, + DRM_FORMAT_RGB565, }; static const struct drm_plane_funcs hibmc_plane_funcs = { -- 2.53.0