From patchwork Mon Oct 7 07:00:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jason-JH.Lin" X-Patchwork-Id: 13824221 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1851ACFB43F for ; Mon, 7 Oct 2024 07:05:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mikTk70CrNGupwfA96mysETqIWVDq8bAGh/Y0KQDRqk=; b=lXDUcuJBgrFvg7maZSvTBK0xgh hlycIfVS49hbI0n/+wdIp4q2lMf4WQqGWuZEYoEviY8m1OYz/UtcxTjJIpi7GliNEAMd2KdahreTC YdVx5CGWr89w9k4NWpZUTWvGzdSMxslehaFY0O43c4FU2yor6w+grKHQoLmSBu3l6ckhI8ZTNzZLL CR8bMVXpV0XSKBfA0aYFHNv3avwb4u11Oins4GrFaw0p8h/b6OVfTpsrOXlhMPcQPyq+vcTmlJTpw 8FkCYwMVTPGEWLshMI0OOmi+D755p0m0yxT+ZSfNPsFlQ59mNMfj21o+MYRe4hmRNY8MyIxhU+fhJ S7blTD7Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1sxhnt-00000001Wl6-0jbN; Mon, 07 Oct 2024 07:05:13 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1sxhk0-00000001VtZ-1qUE; Mon, 07 Oct 2024 07:01:13 +0000 X-UUID: ec47d034847911efb3adad29d29602c1-20241007 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:77ecb76d-b844-46cd-98bc-5677f3b4401f,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:5b1fda64-444a-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: ec47d034847911efb3adad29d29602c1-20241007 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 374357348; Mon, 07 Oct 2024 00:01:06 -0700 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> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241007_000112_510675_8B636E8A X-CRM114-Status: GOOD ( 11.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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/mediatek/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, unsigned int idx, */ if (blend_mode || state->base.fb->format->has_alpha) con |= OVL_CON_AEN; - } - /* 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 == DRM_MODE_BLEND_PIXEL_NONE) - ignore_pixel_alpha = 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 == DRM_MODE_BLEND_PIXEL_NONE || !state->base.fb->format->has_alpha) + ignore_pixel_alpha = OVL_CONST_BLEND; + } if (pending->rotation & DRM_MODE_REFLECT_Y) { con |= OVL_CON_VIRT_FLIP;