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(unknown [61.154.14.86]) by smtp.qiye.163.com (Hmail) with ESMTP id 528777a45; Tue, 27 Oct 2026 21:28:34 +0800 (GMT+08:00) From: Damon Ding To: Andrzej Hajda , Neil Armstrong , Robert Foss , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jingoo Han , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Peter Griffin , Alim Akhtar , Heiko Stuebner , Sandy Huang Cc: Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Dmitry Baryshkov , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, Damon Ding Subject: [PATCH v5 16/18] drm/bridge: analogix_dp: Declare DRM_BRIDGE_OP_HPD for hotplug reporting Date: Tue, 27 Oct 2026 21:28:08 +0800 Message-Id: <20261027132810.1746118-17-damon.ding@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20261027132810.1746118-1-damon.ding@rock-chips.com> References: <20261027132810.1746118-1-damon.ding@rock-chips.com> 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-Transfer-Encoding: 8bit X-HM-Tid: 0aa17d8c61a003a8kunm87c266213d573a X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWRgWCB1ZQUpXWS1ZQUlXWQ8JGhUIEh9ZQVkaThlNVktKGUxITElJTktIT1YVFA kWGhdVEwETFhoSFyQUDg9ZV1kYEgtZQVlNSlVKTk9VSk9VQ01ZV1kWGg8SFR0UWUFZT0tIVUpLSU 9PT0hVSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=cn5cnMUxh+tZTsig1iD2lQuSkdIGiC0kgc/4tU5mfTr/mpDNBFkratkKfz9mtQDTVNwCpBE7VrlcRBgQFGW00WXH88y3yH/fqMA2+VvKOnztqoaS7JNVik65gW2OQofxUvXKWLDsqr3ngTaDqqvudLg/qv+p7ffQsS7NIG9rv/A=; c=relaxed/relaxed; s=default; d=rock-chips.com; v=1; bh=OZLecs9ULaW3R1e0H0Cp/hBp2cEn1xWlIbXGia1G9b8=; h=date:mime-version:subject:message-id:from; The connector created by drm_bridge_connector_init() only gets DRM_CONNECTOR_POLL_HPD when a bridge in the chain declares DRM_BRIDGE_OP_HPD. Without it, the HPD events reported from the IRQ thread were silently dropped and the connection state was only refreshed by the periodic poll worker. Declare DRM_BRIDGE_OP_HPD on the Analogix DP bridge, implement the no-op .hpd_enable/.hpd_disable callbacks, and report the hotplug events via drm_bridge_hpd_notify() with the status read from the hardware. Signed-off-by: Damon Ding --- .../drm/bridge/analogix/analogix_dp_core.c | 22 +++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 009567da5f17..938c70dc8e15 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -31,7 +31,6 @@ #include #include #include -#include #include