From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=148.251.105.195 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794632463; b=zmNf+zdGPdPOKMC3Q3h/oDT17dlfSeRDlrsnIvyQcYKLSXaNqRB5GiE+K+TKuTBJEzdn T0fLBkOvUwI66Tj7RiSLi2Za+K7M7wx7GH48tjWr6so64yZ6IeSP9Rriqr4ZYNPk+R8kX XMlkJJIrLZg8quaeOJu+vit1g0c8gU7ZIVJ+nxX31TROXv3hsElLOYLv7lFDaoxxpGCMS apuVMAHluAWBwNsno7Q3JJiVuS6Kw3+fEvUZ9lFgzVrmzqS6vrB37bS6Q/1FtTT1g9D7i WS1qVOE82giCU+EWP15F4qmiLl41iVcQlhhTP//C30naJD1iq2Ccb0ebqb+cdKNtInw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794632463; h=DMARC-Filter:DKIM-Signature:Received:Received:From:Date:Subject: MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id: References:In-Reply-To:To:Cc:X-Mailer:X-Developer-Signature: X-Developer-Key; bh=Hep7RWQNpmLDtzTa8u9SOSCEbv6fAMG/njo1vSX4wa4=; b=FysJsse4HmfsVzTXzNQmC85772Yqqp+i6q0jwSxxeSci2CnPSidoHXcIJL87/bl07phT r5wAdk2NP/8fFGsZBMFNZ+K5wMRFMk3aUa9X7nMC5JJakvUZwSU7cc4c7NHKtq7Pdnweo 2izgJdvJb+Twqiat6d/Dni7RxDjJVtIuXSfa9TTUqs+XTlEUPNVtQzpbZsmPknvNnUWiJ y2gM7KJ10CPvvFYDgK5XWgMTZgEVWfoKub17uXEc3U7kbM3qgwJtBeYXzgcADUz+lGfTR kOamiS8GcwzmmK4J73mdWron72mqiQMoN/13279TdkaRDg7qV9qZWCtlgo+Gw+Yibxw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass header.d=collabora.com header.i=@collabora.com header.a=rsa-sha256 header.s=mail header.b="Ar/jc+Up"; arc=none smtp.remote-ip=148.251.105.195 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E48C960A381F; Sat, 14 Nov 2026 05:01:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org E48C960A381F Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.a=rsa-sha256 header.s=mail header.b=Ar/jc+Up DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1794632457; bh=45boCezNlmhhziUm1FzEEYt43rJYJ/1/7ikuYa1yghs=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Ar/jc+UpSFh0F7Z/zALXxHoNTyNx8NdTni49RhLmIZr6IJrWnFjKzgjbZdQZSnsXg yHEMITid2W09sa29SIdOTPTzaQ2aTsmbHJ7V+7y0K8pVVBASzF8NiY7/2nxzBgV9O0 IlgsSDuROa5PWq4hTqqC7y39OX7fhvnztf8/eZOXZaPadqkEpuW3OXzThj38FTsS5F ytlQkrmWxRk0xArdnkC2VgCS8AtUyO8vbQVlauV4wSOJ5d7x2aSGTvHouDHN0GXGGp cV+cbE/2Fqe9Sui3KwfiNawhEbjrj6EPIRl2cRlGiq4lutjrIu7y+qoLvXfs0zRFxK +4fnpw7lwjlAQ== Received: from jupiter.universe (unknown [100.64.1.62]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519) (No client certificate requested) (Authenticated sender: sre) by bali.collaboradmins.com (Postfix) with ESMTPSA id 058D817E3BF6; Sat, 14 Nov 2026 06:00:57 +0100 (CET) Received: by jupiter.universe (Postfix, from userid 1000) id 23AB1480062; Sat, 14 Nov 2026 06:00:56 +0100 (CET) From: Sebastian Reichel Date: Sat, 14 Nov 2026 06:00:49 +0100 Subject: [PATCH v12 16/23] drm/rockchip: dw_dp: Add system PM support X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261114-synopsys-dw-dp-improvements-v12-16-d42d3dc5bdd4@collabora.com> References: <20261114-synopsys-dw-dp-improvements-v12-0-d42d3dc5bdd4@collabora.com> In-Reply-To: <20261114-synopsys-dw-dp-improvements-v12-0-d42d3dc5bdd4@collabora.com> To: Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Rob Herring , Krzysztof Kozlowski , Conor Dooley , David Airlie , Simona Vetter , Dmitry Baryshkov , Luca Ceresoli , Philipp Zabel Cc: Cristian Ciocaltea , Damon Ding , Dmitry Baryshkov , Alexey Charkov , dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, kernel@collabora.com, linux-arm-kernel@lists.infradead.org, Sebastian Reichel X-Mailer: b4 0.16.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1010; i=sebastian.reichel@collabora.com; h=from:subject:message-id; bh=45boCezNlmhhziUm1FzEEYt43rJYJ/1/7ikuYa1yghs=; b=owJ4nAFtApL9kA0DAAoB2O7X88g7+poByyZiAGr36weEWcInHZA679Yj1StCqOFPYLhDNHZLM vbi3xG9n43o14kCMwQAAQoAHRYhBO9mDQdGP4tyanlUE9ju1/PIO/qaBQJq9+sHAAoJENju1/PI O/qaHF4P/jVBIVmlo/DZ5M7ZQqryNZoQ03JqP8zliw6mRVyQBiGyuwo+6lQRA7vd1nKW97Eretf n/CWVYj8b79IxBUwYe9gjAX66suftDI90MsHUNFwUCO7dYqh64a9RqwwczocasmQ+aK2kFh6bEf lw9SmBaMuF/0Y69SUKY5cW2ClZlAscf4YbAL9jGN+4iC6GL8FfZMYHNe664Rp3EYUBBQen0UntD 3SkQwWHvpTreN0B/ahxMQN9HFmtTJ1j2vgLQAi2Tg2pB11/qPT8leRBenFbMRmO7szL7o5nNYjT w2Mf7LqteW4KHfihXAfA4/SeU8mQPalm+BGQ0IM+B+2YtSb60wOUgsUI1D4YSQ1qAexQ9RGoQzx umlqz+RJEkm9cLDfaR7YaHDoyi1hWTa0/t69L7eF/58wP/ceqrslxPLoiWb3ONZEAmY5re89SGy l4Uvi4IDcY6/mGP2DUKuHP+iesKqDw2zGYgGtvnfSz1mp9yx9TTGRsmuVNxCXQVbS/oEK5C8GBj zo+Fl6HdUBxytK1WnO10nvSRSWpZAf0vx/6bg940/LIsrBZTDYcg0HIc5uYBr75ufQjGHh39IGj feQntBTSgYCci+GVGIebCCG9N78y9SefKt+93ZQ3xl230Qt+xV5u/I/iuBBYMvTZHP4FVTpRy87 i3GUbhbZAQt1BB3TpuE4tpQ== X-Developer-Key: i=sebastian.reichel@collabora.com; a=openpgp; fpr=EF660D07463F8B726A795413D8EED7F3C83BFA9A Explicitly suspend the DP controller when the system goes to sleep and more importantly resume it properly after system sleep exit to recover USB-C HPD register state, which is lost when the system goes to sleep. Signed-off-by: Sebastian Reichel --- drivers/gpu/drm/rockchip/dw_dp-rockchip.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/rockchip/dw_dp-rockchip.c b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c index 99d948a7c51f..4cfb40494379 100644 --- a/drivers/gpu/drm/rockchip/dw_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c @@ -269,6 +269,7 @@ static int dw_dp_rockchip_runtime_resume(struct device *dev) static const struct dev_pm_ops dw_dp_pm_ops = { RUNTIME_PM_OPS(dw_dp_rockchip_runtime_suspend, dw_dp_rockchip_runtime_resume, NULL) + LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume) }; static const struct rockchip_dw_dp_plat_data rk3588_dp_plat_data = { -- 2.53.0