From nobody Thu Nov 28 02:40:57 2024 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 87FAE17085A for ; Mon, 7 Oct 2024 07:01:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=60.244.123.138 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728284476; cv=none; b=jUtS/KWDJkDB2iZWdi0hgKaaON1iBoq58by07hy3y792xV9rzM1FHbhGkEfZrQs6lFTlDMppD0mpCn4jQaPq6JO9+l7otGdkJiO3vbQ7q1IAqhPEHkhWYNgUeLpQwOjrTAjLPD6Ut+B+maJRbKWkIBVwrnzScvKPxz2eI92OUhQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728284476; c=relaxed/simple; bh=LZQFc3zVyeXc6PdfCkTaSTT7F+52DMTiGIfqbP/zrvo=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=dXdGqrWCwN8oYycmpMImvtndrMVaYBSICbOPatSshW+JXRoFUhWFlZoh8GN+5i17lDWFH3f//9GErO3HXuYzRnrHiFIHZd3z518Mpv6gKGD7y3R2Ol4Ho+TevB/xOi3nsPjXbBQC/8UFJqE1JFNGDpIY5do4WNCq97BhucnzyoY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=kOpMlkOf; arc=none smtp.client-ip=60.244.123.138 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="kOpMlkOf" X-UUID: eb4711fe847911efb66947d174671e26-20241007 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=mikTk70CrNGupwfA96mysETqIWVDq8bAGh/Y0KQDRqk=; b=kOpMlkOfjRZ52uzLNF3HmAAaqGiEAO1ytcGaDLYix69DaTaa5BPM0j66LSIa/touncT1qCVa0zhjeD14u1cFIyonOa6wDNRk9YeeulpccXrY8WDkC6fld/UxVsM11W7+ZmmgRXg9QYcVmBzl2qk11HFExQBh14fjOLTd1rpPDFQ=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.41,REQID:3af594bf-a24c-4d57-a21d-bab65e585614,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:6dc6a47,CLOUDID:4c1fda64-444a-4b47-a99a-591ade3b04b2,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1, SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: eb4711fe847911efb66947d174671e26-20241007 Received: from mtkmbs11n2.mediatek.inc [(172.21.101.187)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 480990772; Mon, 07 Oct 2024 15:01:04 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by MTKMBS09N1.mediatek.inc (172.21.101.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Mon, 7 Oct 2024 15:01:03 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Mon, 7 Oct 2024 15:01:03 +0800 From: Jason-JH.Lin To: Adam Thiede , Yassine Oudjana , Chun-Kuang Hu , AngeloGioacchino Del Regno CC: Shawn Sung , Alper Nebi Yasak , , , , , "Jason-JH . Lin" , Singo Chang , Nancy Lin , Subject: [PATCH v9 2/5] drm/mediatek: ovl: Refine ignore_pixel_alpha comment and placement Date: Mon, 7 Oct 2024 15:00:58 +0800 Message-ID: <20241007070101.23263-3-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20241007070101.23263-1-jason-jh.lin@mediatek.com> References: <20241007070101.23263-1-jason-jh.lin@mediatek.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MTK: N Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Refine the comment for ignore_pixel_alpha flag and move it to if (state->fb) statement to make it less conditional. Signed-off-by: Jason-JH.Lin Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: CK Hu --- drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/medi= atek/mtk_disp_ovl.c index 8453a72f9e59..ddc826c42653 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -481,16 +481,16 @@ void mtk_ovl_layer_config(struct device *dev, unsigne= d int idx, */ if (blend_mode || state->base.fb->format->has_alpha) con |=3D OVL_CON_AEN; - } =20 - /* CONST_BLD must be enabled for XRGB formats although the alpha channel - * can be ignored, or OVL will still read the value from memory. - * For RGB888 related formats, whether CONST_BLD is enabled or not won't - * affect the result. Therefore we use !has_alpha as the condition. - */ - if ((state->base.fb && !state->base.fb->format->has_alpha) || - blend_mode =3D=3D DRM_MODE_BLEND_PIXEL_NONE) - ignore_pixel_alpha =3D OVL_CONST_BLEND; + /* + * Although the alpha channel can be ignored, CONST_BLD must be enabled + * for XRGB format, otherwise OVL will still read the value from memory. + * For RGB888 related formats, whether CONST_BLD is enabled or not won't + * affect the result. Therefore we use !has_alpha as the condition. + */ + if (blend_mode =3D=3D DRM_MODE_BLEND_PIXEL_NONE || !state->base.fb->form= at->has_alpha) + ignore_pixel_alpha =3D OVL_CONST_BLEND; + } =20 if (pending->rotation & DRM_MODE_REFLECT_Y) { con |=3D OVL_CON_VIRT_FLIP; --=20 2.43.0