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 C855E1AD9F9; Mon, 14 Oct 2024 15:17:07 +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=1728919027; cv=none; b=VUdjidySy7ru6X5sT7DzM0NONrLmBUbYkZwHxAM8CflSMFIEIu1IO5IHK6LxF1BoiLef8l4twQZYdFroNLJG2zhcWLLmYollQunUiIDFRpBNXZDm77F8dEsFG+Ptm1U/p67on06/ZN5X4OyuVUac8cJrELEgSldpiTBaSYfsHcg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728919027; c=relaxed/simple; bh=QYX30Ru8aqbvjFyzKXC/geDP23MJaTyW3/y/WIXef0Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jeNz2hXmouQy9beGxCENst7pXyrDL9xuq3AnnhIDAEWxBOtgjoR9yEM9a1TYc7sARGdYjOwbvOSRLacKUMOmLrGx3LDNuL4l93mZRpkxzi6n+MQwvsXseujjZl/dft6fbH5G3WWgZ0GKoZ4JIGABrHU8Da/BpetkSdJfAbHHyO4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=wh6+5t5e; 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="wh6+5t5e" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 36019C4CEC3; Mon, 14 Oct 2024 15:17:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1728919027; bh=QYX30Ru8aqbvjFyzKXC/geDP23MJaTyW3/y/WIXef0Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wh6+5t5eoCRTKe1c3qELRHvwiMOtZDvJV4VaWUcB8eEqNbRhpKka0V/0SnDeqd2Ew e6v2WfkXwUvxsfv1TCVQ8q7Q3Gc2WMIEYQr/1tJ4Vvx3C8EUMZzccJC2qANcfxPlut 8Ijpde0Em+7E1DSI+i0u5aVmUEzCr/y+phZdqqVg= 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 6.1 490/798] drm/stm: ltdc: reset plane transparency after plane disable Date: Mon, 14 Oct 2024 16:17:24 +0200 Message-ID: <20241014141237.220394554@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241014141217.941104064@linuxfoundation.org> References: <20241014141217.941104064@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 6.1-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 1d22afcf34ba7..a192f77915454 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -1514,6 +1514,9 @@ 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