From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F1B9CC83F1D for ; Tue, 15 Jul 2025 11:43:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=/b/lAhCvsonGE8Z852+2G/07p0p8yhZ5USq40tfyzbw=; b=B/3pS4klNC3F2uXIMCoZUQPjaA u7RiXBFR1DxUESJxcyOQfSfabLEm026kPYgZlrgOI0vPT15tjTRhDoWGWiMRYZ84cgum/KoHIqRdJ ZxNUuhf+h+9iwAsDQFJGAR1nXhFrNOeatQt0rhj7wSh5Hyk1nkDt1u1l2TapPZDEF3GLroDy1cktY /uFkQVOfw3XEQVz4JybS2dQuPBCd4HtK7XSFELjke6jrklmDLH0sOcy+z9sWpUiCpoCpjQqJp2dmu b/v6q1cL2b76908P0lM0h8lBxoSK5/CBy6L9j5jj1tY3tPqDDsTXOh+7q8Zye/2vo2LS3GaiDrh4B ywD/QZCA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ube3i-00000004yJr-4636; Tue, 15 Jul 2025 11:42:54 +0000 Received: from smtpbguseast2.qq.com ([54.204.34.130]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ubdng-00000004w8V-2yuI; Tue, 15 Jul 2025 11:26:24 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=airkyi.com; s=altu2504; t=1752578720; bh=/b/lAhCvsonGE8Z852+2G/07p0p8yhZ5USq40tfyzbw=; h=From:To:Subject:Date:Message-Id; b=FL15sK4k1wtmu4XkiLSYu0oyzgUqZwPWuTiS3BWi4kjdU6Crn/dq2AYEMLsfTBJT5 4krZCWwpMDNMEiL+nHsn8adzymzEsNFDQGzvlmZZct4bKzOpRgJLxz04+JJ9B9jHHL Q2zwp290XFRcxMGh2eibQxhqEGRKlzIjCY5X1WdU= X-QQ-mid: zesmtpsz3t1752578718t9af83c66 X-QQ-Originating-IP: 9mUY+DgpKeGKBIqUqnlFegV3kCI4AR72owXY37bfQwc= Received: from DESKTOP-8BT1A2O.localdomain ( [58.22.7.114]) by bizesmtp.qq.com (ESMTP) with id ; Tue, 15 Jul 2025 19:25:16 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 15861609550683848417 From: Chaoyi Chen To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vinod Koul , Kishon Vijay Abraham I , Heiko Stuebner , Sandy Huang , Andy Yan , Yubing Zhang , Frank Wang , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Amit Sunil Dhamne , Greg Kroah-Hartman , Chaoyi Chen , Dragan Simic , Johan Jonker , Diederik de Haas Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, dri-devel@lists.freedesktop.org Subject: [PATCH 4/5] drm/rockchip: cdn-dp: Add support for Type-C TCPM Date: Tue, 15 Jul 2025 19:24:55 +0800 Message-Id: <20250715112456.101-5-kernel@airkyi.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250715112456.101-1-kernel@airkyi.com> References: <20250715112456.101-1-kernel@airkyi.com> X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpsz:airkyi.com:qybglogicsvrsz:qybglogicsvrsz4a-0 X-QQ-XMAILINFO: NYz8c2bcbB9MQnNn3zMpWCyy1wOJpwH1FI3r+N0Of+zkM4IeDaarohS6 2TB+9N1Q5HxUwcddBd1NwAaMW+owNwEHngX+SJM8ipoVSgPy5GLFccR6d65+flcYIrrKXnD iekzUip/Phux2bJ5vgX22crFnC5moFuaclTB2sOO1RNGAHUX/nFB0mof2uhl5LYHsbdKg3G 66o3ehFXcxXLi+xWgEsJH1aiQxvH8JhCDayo8gj+NowF+V3BzLyJd46qoxFxHfgKr4MoL9J /R4/LhJcNWO+Nm3TtlZqmtSOzp/EQl8MfsEWVMCrUeSn9iqq3BOmwCiiT6H8EVFszGobsho l6WCukfoYv7aLx/egZlBkaZ8gEjLqO4xeTRERq8tc8RSulhbxT9QXnuWa0rhMbgLQH5G3Iu 7W8ZE6YiMlhy7vQbNfp3u5Jfc9TloFaAR3F1RuTPzc4CyNH0qLRSTVcAR9ksrJBu+FXqvTP OBb4IsVwP5jJGPfEpTn3eW71tSByYaMaVJvdUB3zTOSdCIKnIf+Mb8f3qjmNOWAf/l+Enon 7SCv193aALXdKgPToJWOCle2FLzGQko7BSDUVKLqNZZIYHH+R9gw63KmtcUC7z/Nr3+BBjz HW0/xAWVCo3l16Rmwo1PkkLXyWenrLO9jO01pQdC5foHq3y5cwgGIszUE2Bo2cZliGYeoOq FDE/ukclS3z5tl9FqvT3aboEVifNc5RkNCYNJ56BUz9EI2TCRBclPqNxQ/1m82e6YH1z7YO dV2aYYuGUbLF3Z4SvZdCUQC0UCx7LJLYB/SNjpbOy3Ef60c+jOpD5fM1RhGrr8QUErT0ZWG 34SpWsU0Cc6l1VaHPaUC4kgmjpRgvrbch/S/D5EiqaJr6sTDKBouNLXPhPCPvnRr+uFDTHG GZWoN+6l+6o4nPRiqnTDTcM4lJgsKNt9j9ORUCLfUfIi024p/99WRL1qD5R94GDLDK3xTsL OxS7ezP71+E6B96iLeNW/GcBz4SvkasqHG/Q7AQtu/v1yKw== X-QQ-XMRINFO: OWPUhxQsoeAVDbp3OJHYyFg= X-QQ-RECHKSPAM: 0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250715_042622_904158_A17D7D35 X-CRM114-Status: GOOD ( 17.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Chaoyi Chen This patch add support for Type-C Port Manager. If the Type-C controller is present, the DP hot plug events can be notified with the help of TCPM and without the need for extcon. The extcon device should still be supported. Signed-off-by: Chaoyi Chen --- drivers/gpu/drm/rockchip/cdn-dp-core.c | 37 ++++++++++++++++++-------- 1 file changed, 26 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index 24f6b3879f4b..3354d0e4ae4f 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -156,6 +156,9 @@ static int cdn_dp_get_port_lanes(struct cdn_dp_port *port) int dptx; u8 lanes; + if (!edev) + return phy_get_bus_width(port->phy); + dptx = extcon_get_state(edev, EXTCON_DISP_DP); if (dptx > 0) { extcon_get_property(edev, EXTCON_DISP_DP, @@ -219,7 +222,7 @@ static bool cdn_dp_check_sink_connection(struct cdn_dp_device *dp) * some docks need more time to power up. */ while (time_before(jiffies, timeout)) { - if (!extcon_get_state(port->extcon, EXTCON_DISP_DP)) + if (port->extcon && !extcon_get_state(port->extcon, EXTCON_DISP_DP)) return false; if (!cdn_dp_get_sink_count(dp, &sink_count)) @@ -385,11 +388,14 @@ static int cdn_dp_enable_phy(struct cdn_dp_device *dp, struct cdn_dp_port *port) goto err_power_on; } - ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, - EXTCON_PROP_USB_TYPEC_POLARITY, &property); - if (ret) { - DRM_DEV_ERROR(dp->dev, "get property failed\n"); - goto err_power_on; + property.intval = 0; + if (port->extcon) { + ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, + EXTCON_PROP_USB_TYPEC_POLARITY, &property); + if (ret) { + DRM_DEV_ERROR(dp->dev, "get property failed\n"); + goto err_power_on; + } } port->lanes = cdn_dp_get_port_lanes(port); @@ -821,6 +827,14 @@ static int cdn_dp_audio_mute_stream(struct drm_connector *connector, return ret; } +static void cdn_dp_hpd_notify(struct drm_bridge *bridge, + enum drm_connector_status status) +{ + struct cdn_dp_device *dp = bridge_to_dp(bridge); + + schedule_work(&dp->event_work); +} + static const struct drm_bridge_funcs cdn_dp_bridge_funcs = { .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, @@ -831,6 +845,7 @@ static const struct drm_bridge_funcs cdn_dp_bridge_funcs = { .atomic_disable = cdn_dp_bridge_atomic_disable, .mode_valid = cdn_dp_bridge_mode_valid, .mode_set = cdn_dp_bridge_mode_set, + .hpd_notify = cdn_dp_hpd_notify, .dp_audio_prepare = cdn_dp_audio_prepare, .dp_audio_mute_stream = cdn_dp_audio_mute_stream, @@ -938,9 +953,6 @@ static void cdn_dp_pd_event_work(struct work_struct *work) out: mutex_unlock(&dp->lock); - drm_bridge_hpd_notify(&dp->bridge, - dp->connected ? connector_status_connected - : connector_status_disconnected); } static int cdn_dp_pd_event(struct notifier_block *nb, @@ -1028,6 +1040,9 @@ static int cdn_dp_bind(struct device *dev, struct device *master, void *data) for (i = 0; i < dp->ports; i++) { port = dp->port[i]; + if (!port->extcon) + continue; + port->event_nb.notifier_call = cdn_dp_pd_event; ret = devm_extcon_register_notifier(dp->dev, port->extcon, EXTCON_DISP_DP, @@ -1120,14 +1135,14 @@ static int cdn_dp_probe(struct platform_device *pdev) PTR_ERR(phy) == -EPROBE_DEFER) return -EPROBE_DEFER; - if (IS_ERR(extcon) || IS_ERR(phy)) + if (IS_ERR(phy) || PTR_ERR(extcon) != -ENODEV) continue; port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); if (!port) return -ENOMEM; - port->extcon = extcon; + port->extcon = IS_ERR(extcon) ? NULL : extcon; port->phy = phy; port->dp = dp; port->id = i; -- 2.49.0