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 EF6AC9443 for ; Sun, 13 Aug 2023 21:25:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 75131C433C9; Sun, 13 Aug 2023 21:25:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691961918; bh=+ecs3ODtgA28oTupRvKUtRFGI+0huETpzyjh51D7gME=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lTgJNzTWXHTBH6GR+IAIi+2nxlT1AEI/PUk5af3QnAhFJ0kxknirMa0GEfRrAXfM5 TP7R0/17oPljnz6OvN8GLcWanqvo6vmPa4SRSR1veo30Ipxl4qh0theDJPPmQNxaSf mZZnT2MdXEuB33fAmC2gAebEqLOzoM3w9Lpe7HNU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Melissa Wen , Harry Wentland , Alex Hung , Alex Deucher Subject: [PATCH 6.4 045/206] drm/amd/display: check attr flag before set cursor degamma on DCN3+ Date: Sun, 13 Aug 2023 23:16:55 +0200 Message-ID: <20230813211726.284071829@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230813211724.969019629@linuxfoundation.org> References: <20230813211724.969019629@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Melissa Wen commit 96b020e2163fb2197266b2f71b1007495206e6bb upstream. Don't set predefined degamma curve to cursor plane if the cursor attribute flag is not set. Applying a degamma curve to the cursor by default breaks userspace expectation. Checking the flag before performing any color transformation prevents too dark cursor gamma in DCN3+ on many Linux desktop environment (KDE Plasma, GNOME, wlroots-based, etc.) as reported at: - https://gitlab.freedesktop.org/drm/amd/-/issues/1513 This is the same approach followed by DCN2 drivers where the issue is not present. Fixes: 03f54d7d3448 ("drm/amd/display: Add DCN3 DPP") Link: https://gitlab.freedesktop.org/drm/amd/-/issues/1513 Signed-off-by: Melissa Wen Reviewed-by: Harry Wentland Tested-by: Alex Hung Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dpp.c @@ -357,8 +357,11 @@ void dpp3_set_cursor_attributes( int cur_rom_en = 0; if (color_format == CURSOR_MODE_COLOR_PRE_MULTIPLIED_ALPHA || - color_format == CURSOR_MODE_COLOR_UN_PRE_MULTIPLIED_ALPHA) - cur_rom_en = 1; + color_format == CURSOR_MODE_COLOR_UN_PRE_MULTIPLIED_ALPHA) { + if (cursor_attributes->attribute_flags.bits.ENABLE_CURSOR_DEGAMMA) { + cur_rom_en = 1; + } + } REG_UPDATE_3(CURSOR0_CONTROL, CUR0_MODE, color_format,