From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A6D501DED6A; Tue, 8 Oct 2024 12:22:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728390164; cv=none; b=qh7JKw5hdmJivBE4J55bAk6Nywxnlx3HFbQK+HLG4yjSrVOT5Z54D9tUdA+UCPl/hWhTgVR55tgORE+WNUC4xR4BmQlqJtBL0SQsCeuq7tUu/2zCmHK/4+XM7cwvV7Z/ROQXr7m7uZ8qdbVFTW9lImIgAf1wAwgsA0iFDvNKT6g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728390164; c=relaxed/simple; bh=XbBO7kp2S/1do7MH3tU/4fXCIoEGAq4XfZV7n4daWFM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AsC++3+s/uAFNZZEqpQAySMzDkiEhOmTgKc9bnEtMR8RtEWYnslxmOgYqxKHF50emn/kGcbItyE9iOdBKW99HykHchJqmSnvl625+4u+JZTU+yDk5q06gbOis2Xf3t54UGiIefWt90oayafxFudZ/dAQTNTh6d6eXsQdUro51K4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=HZyoLxMz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="HZyoLxMz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D87CEC4CEC7; Tue, 8 Oct 2024 12:22:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1728390164; bh=XbBO7kp2S/1do7MH3tU/4fXCIoEGAq4XfZV7n4daWFM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HZyoLxMzqMB81nbKZznoi82spxc7d+PDVCjd1tJSeUKaVJbJWq+hQ9BsB7r4o8wiJ DB1yuw2cDrO6SE5Qme620VArX685knMOeF2wEs4TP5nyapZWZdJNfucG2Hu+NCPu5c d1xuycYBOVKdtmQjcpdlyF2uF7d/66nje0G5iJ50= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yannick Fertre , Raphael Gallais-Pou , Sasha Levin Subject: [PATCH 6.10 209/482] drm/stm: ltdc: reset plane transparency after plane disable Date: Tue, 8 Oct 2024 14:04:32 +0200 Message-ID: <20241008115656.534524370@linuxfoundation.org> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241008115648.280954295@linuxfoundation.org> References: <20241008115648.280954295@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yannick Fertre [ Upstream commit 02fa62d41c8abff945bae5bfc3ddcf4721496aca ] The plane's opacity should be reseted while the plane is disabled. It prevents from seeing a possible global or layer background color set earlier. Signed-off-by: Yannick Fertre Link: https://patchwork.freedesktop.org/patch/msgid/20240712131344.98113-1-yannick.fertre@foss.st.com Signed-off-by: Raphael Gallais-Pou Signed-off-by: Sasha Levin --- drivers/gpu/drm/stm/ltdc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 056642d12265c..0832b749b66e7 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -1513,6 +1513,9 @@ static void ltdc_plane_atomic_disable(struct drm_plane *plane, /* Disable layer */ regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN | LXCR_CLUTEN | LXCR_HMEN, 0); + /* Reset the layer transparency to hide any related background color */ + regmap_write_bits(ldev->regmap, LTDC_L1CACR + lofs, LXCACR_CONSTA, 0x00); + /* Commit shadow registers = update plane at next vblank */ if (ldev->caps.plane_reg_shadow) regmap_write_bits(ldev->regmap, LTDC_L1RCR + lofs, -- 2.43.0