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 20618226640; Wed, 25 Sep 2024 12:16:29 +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=1727266589; cv=none; b=JEx5DpfNfdcTyxUo8TlhOEN46YK2ugaO8Uv1+H5xLj6KyuUxq5I9pdXTDQpyIAE4mPXFGklq1ewbfEbdp5cIPVyQ7GRUFHQPOQbAqrauUaxQPGKPCJpzdciiCLBC0Jp82MTnCuHcwvL5h1V3U0DLKSpBeQbHv7GIXyEbib8DO2g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727266589; c=relaxed/simple; bh=BxcwbgJ/CnH0K4cDKwkcguF41kZNgM81f4D/TFs+Ny4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sYUgpXxgJL99SShT2nUMFmCrZf8sRAnmPCdsXvOPYTxHa8O1fqbc9ydl8zVJJPUx1yNSMuPR6rY234klKSDY8jaJOklzsadQex4nQxtHaYuIGA5qvjSWqj0Q//ccunMzb3Wtk31WQMAdcpzno5yOYiPPQ5VPaOuhjyoC4GMfTSc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JEvhVrjy; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="JEvhVrjy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 19E6FC4CEC3; Wed, 25 Sep 2024 12:16:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1727266589; bh=BxcwbgJ/CnH0K4cDKwkcguF41kZNgM81f4D/TFs+Ny4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JEvhVrjyUgbZCsuh4VdZwUUKjICcXk+psJ2slWjr2b8+Akgeq/M9zGtZv7tSM/Unk xfG5yNB/e5BK2I4niFz2ESv9gPApkh8nDYG+0z3qRL/RDnrL4g1AA/V34D0YKHxREy 1fOdbDRjLXivScqtbgM02UJKD4sG4EO3zs0W6wwuDLDgv3aFBqyCL5bA2Po5pjppZs x2rsRg+9Hv9NQ0amLU1l8JBl8zosQ3cXNYOcRsYAScdkCTIMefwLtJQXVYoR4J2omt ladOl0e9VBH0oTO0xe3sEpxRHLp9b8eUOr5uXF0dRObvt8+51FO4Yj0hxnLcidPSZF PmlovhndbhCxA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yannick Fertre , Raphael Gallais-Pou , Sasha Levin , philippe.cornu@foss.st.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, dri-devel@lists.freedesktop.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 6.6 106/139] drm/stm: ltdc: reset plane transparency after plane disable Date: Wed, 25 Sep 2024 08:08:46 -0400 Message-ID: <20240925121137.1307574-106-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240925121137.1307574-1-sashal@kernel.org> References: <20240925121137.1307574-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.52 Content-Transfer-Encoding: 8bit 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 eeaabb4e10d3e..9e76785cb2691 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