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 552411DE3DE; Mon, 17 Mar 2025 16:40:03 +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=1742229603; cv=none; b=TiLthNaHjjbG8DldHf4ta7qBFLwc/kx14syLMeCSF8Krp9TUJlzLig2b1XOPt1gB947gSWrc4dSIcFgv/dc50W0KnjQBmL1zkW9wQWvPOhQ/ZYdx0muKTmYXjXZM62V7Ey+3tylxQKrAukL1ELUzzpeBPPZxmUAdxzklALWRodI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742229603; c=relaxed/simple; bh=UAbiIlQI/oZVN6wdwg2tftAnClootC4jiRNVrV10gqo=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=JR17/Rm6nBamoshpkDszq2G7A1xKSoSE8wGqTD4J7DFJKR6jYlj+u3I2zUt4C0y9zi9v2CotHAonSfyEULPvqjR/L0sY+lERtcxpNRui0UpKvh1i7M6a0t3WMsX2dTbhJNq6E9Ch3U05nWbTkYEGY7eOrKpNwnjMLeSG8O1TJfs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=u9WLhZ75; 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="u9WLhZ75" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C99D5C4CEEC; Mon, 17 Mar 2025 16:39:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742229603; bh=UAbiIlQI/oZVN6wdwg2tftAnClootC4jiRNVrV10gqo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u9WLhZ75bgnZxM3wO3yomRYQTn7341E/3xYUwFcI7IbbP5T+Iz8x1w33sY0u596I4 44oSUvEnaAXIHzGQ2pDum3gITd3Jqks/MmhqnOg/aQU3votcoVUcSmU257TqsrZt/x YbImtbfkQeFaPcuKdra1CgxJ6LLtVQcpc65cRbANfcr+3EtpRV4EPGJnQDkkaxk49n 7j8G3GY5YkOQhv5iM2vbqATvOQrPQPxWXfJ190jCFRcrugrKc5q+v/3O6yXxiy3Ahw pezrVeyWA2nOX4+A4DwEiQBcd/acbFGZV2nBns9HNiPhHBRQdn6vXWqebx+B7WzjLS Fv7RFmjdf+49w== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mario Limonciello , Xaver Hugl , Muhammad Usama Anjum , Alex Deucher , Harry Wentland , Sasha Levin , christian.koenig@amd.com, airlied@gmail.com, simona@ffwll.ch, sunpeng.li@amd.com, lijo.lazar@amd.com, tzimmermann@suse.de, rajneesh.bhardwaj@amd.com, shaoyun.liu@amd.com, Ramesh.Errabolu@amd.com, chiahsuan.chung@amd.com, siqueira@igalia.com, sunil.khatri@amd.com, alex.hung@amd.com, aurabindo.pillai@amd.com, hersenxs.wu@amd.com, mwen@igalia.com, hamzamahfooz@linux.microsoft.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.15 3/4] drm/amd: Keep display off while going into S4 Date: Mon, 17 Mar 2025 12:39:48 -0400 Message-Id: <20250317163949.1893632-3-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250317163949.1893632-1-sashal@kernel.org> References: <20250317163949.1893632-1-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 5.15.179 Content-Transfer-Encoding: 8bit From: Mario Limonciello [ Upstream commit 4afacc9948e1f8fdbca401d259ae65ad93d298c0 ] When userspace invokes S4 the flow is: 1) amdgpu_pmops_prepare() 2) amdgpu_pmops_freeze() 3) Create hibernation image 4) amdgpu_pmops_thaw() 5) Write out image to disk 6) Turn off system Then on resume amdgpu_pmops_restore() is called. This flow has a problem that because amdgpu_pmops_thaw() is called it will call amdgpu_device_resume() which will resume all of the GPU. This includes turning the display hardware back on and discovering connectors again. This is an unexpected experience for the display to turn back on. Adjust the flow so that during the S4 sequence display hardware is not turned back on. Reported-by: Xaver Hugl Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2038 Cc: Muhammad Usama Anjum Tested-by: Muhammad Usama Anjum Acked-by: Alex Deucher Acked-by: Harry Wentland Link: https://lore.kernel.org/r/20250306185124.44780-1-mario.limonciello@amd.com Signed-off-by: Mario Limonciello Signed-off-by: Alex Deucher (cherry picked from commit 68bfdc8dc0a1a7fdd9ab61e69907ae71a6fd3d91) Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 11 +++++++++-- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 +++++ 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 57943e9008710..adcf3adc5ca51 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -2294,7 +2294,6 @@ static int amdgpu_pmops_freeze(struct device *dev) adev->in_s4 = true; r = amdgpu_device_suspend(drm_dev, true); - adev->in_s4 = false; if (r) return r; return amdgpu_asic_reset(adev); @@ -2303,8 +2302,13 @@ static int amdgpu_pmops_freeze(struct device *dev) static int amdgpu_pmops_thaw(struct device *dev) { struct drm_device *drm_dev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(drm_dev); + int r; - return amdgpu_device_resume(drm_dev, true); + r = amdgpu_device_resume(drm_dev, true); + adev->in_s4 = false; + + return r; } static int amdgpu_pmops_poweroff(struct device *dev) @@ -2317,6 +2321,9 @@ static int amdgpu_pmops_poweroff(struct device *dev) static int amdgpu_pmops_restore(struct device *dev) { struct drm_device *drm_dev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(drm_dev); + + adev->in_s4 = false; return amdgpu_device_resume(drm_dev, true); } diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index bfa15d8959553..c93b27b6b17a6 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2700,6 +2700,11 @@ static int dm_resume(void *handle) return 0; } + + /* leave display off for S4 sequence */ + if (adev->in_s4) + return 0; + /* Recreate dc_state - DC invalidates it when setting power state to S3. */ dc_release_state(dm_state->context); dm_state->context = dc_create_state(dm->dc); -- 2.39.5