From patchwork Fri Mar 4 01:08:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 12768375 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62C67C433F5 for ; Fri, 4 Mar 2022 01:06:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234127AbiCDBH1 (ORCPT ); Thu, 3 Mar 2022 20:07:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39938 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231845AbiCDBH0 (ORCPT ); Thu, 3 Mar 2022 20:07:26 -0500 Received: from mail-ot1-x332.google.com (mail-ot1-x332.google.com [IPv6:2607:f8b0:4864:20::332]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 75BDE179A38 for ; Thu, 3 Mar 2022 17:06:39 -0800 (PST) Received: by mail-ot1-x332.google.com with SMTP id p12-20020a05683019cc00b005af1442c9e9so6104236otp.13 for ; Thu, 03 Mar 2022 17:06:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=S5t4rbaYih60HQLQG00cH7GkHoQ2b0pMi3XAEtckmE8=; b=pex35ksJ1RmL6raNCdLtvz2rZNpkKoewNNIB6VzZUOsWqRNYLQzy8uahH1EQ3gTUs6 3JEjp5Rv5UooZGIGDxl1XUNj5sdWwUXjShAyNm3a45yFgdUG7N3ifbgeCIewoj5plual TngJrLkrP7rik5aa4GlA/Ypnx7cJ3MgmeMT1wEz/Qwb5CqagoJe2Ry4Wyq94ugz+UpOr CDkV3Jb/U69QHXOAIkv68kYt2PM+cM7Mcka0A3zx0/b1CqKN5b8GhCU+/PQQxNk4GuIg JuOLs54lWVog3R8yQ9vP+X8JYrdLQjZB37f3xZ/Rz4aLjUcTkw4cfk5H/uu8rZjAE7hY fkOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=S5t4rbaYih60HQLQG00cH7GkHoQ2b0pMi3XAEtckmE8=; b=sT8ZS7+UbYRphXtuBh6tD2UJmCob167t/qgArFzlB8u/VQoYFxeOklEeUSlJxqgz+f 69yqtjXLF3GBrLc37Nb0MyS/vI+rw5ZP6fvcHap8cJH/ZGuMHOhpaRWfrta12hBr+wSa 470lGHRvd4XkQJUqL3BiHHW/D/ZA4inAnDEJGWsxqLxQq7Okq//UPQhTyt3j+/I9E+gR PKQFKi13kCN0BpzrEnisn21Eoccslq2JVfIjsYvHUjcfZwplcZrEFXzy3MXepqKHyx86 pWVxmHGycNKS9L+02FW9a5JX915RkitNje8JJwzkKmXnZtaiccWvhriR8P6/kdXCvbXl GSGQ== X-Gm-Message-State: AOAM532IW7oYqsW9hGx4RajZR7mpzvTpOOyxngvWolmuSb6s12VK2IiX MsAqXTBeD2jd6sXhHICfmAkxEQ== X-Google-Smtp-Source: ABdhPJytLNNdMMTPErv9vZo/RqVdSG9bZ+EjlBsEkVgN7+X2TRNTpYHgyz2ZTSewepBTpUOKWvZERA== X-Received: by 2002:a9d:734b:0:b0:5b1:ff8f:710 with SMTP id l11-20020a9d734b000000b005b1ff8f0710mr1027991otk.65.1646355998639; Thu, 03 Mar 2022 17:06:38 -0800 (PST) Received: from ripper.. ([2600:1700:a0:3dc8:205:1bff:fec0:b9b3]) by smtp.gmail.com with ESMTPSA id l14-20020a4ac60e000000b002e0e75dcb82sm1709080ooq.12.2022.03.03.17.06.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Mar 2022 17:06:38 -0800 (PST) From: Bjorn Andersson To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , Rob Clark , Dmitry Baryshkov Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Sean Paul , Abhinav Kumar , Heikki Krogerus , Greg Kroah-Hartman , Stephen Boyd , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-usb@vger.kernel.org Subject: [PATCH v2 1/2] drm: Add HPD state to drm_connector_oob_hotplug_event() Date: Thu, 3 Mar 2022 17:08:26 -0800 Message-Id: <20220304010827.998080-1-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org In some implementations, such as the Qualcomm platforms, the display driver has no way to query the current HPD state and as such it's impossible to distinguish between disconnect and attention events. Add a parameter to drm_connector_oob_hotplug_event() to pass the HPD state. Also push the test for unchanged state in the displayport altmode driver into the i915 driver, to allow other drivers to act upon each update. Changes in v2: - Replace bool with drm_connector_hpd_state enum to represent "state" better - Track old hpd state per encoder in i915 Signed-off-by: Bjorn Andersson --- drivers/gpu/drm/drm_connector.c | 6 ++++-- drivers/gpu/drm/i915/display/intel_dp.c | 17 ++++++++++++++--- drivers/gpu/drm/i915/i915_drv.h | 3 +++ drivers/usb/typec/altmodes/displayport.c | 10 +++------- include/drm/drm_connector.h | 11 +++++++++-- 5 files changed, 33 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index a50c82bc2b2f..a44f082ebd9d 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -2825,6 +2825,7 @@ struct drm_connector *drm_connector_find_by_fwnode(struct fwnode_handle *fwnode) /** * drm_connector_oob_hotplug_event - Report out-of-band hotplug event to connector * @connector_fwnode: fwnode_handle to report the event on + * @hpd_state: hot plug detect logical state * * On some hardware a hotplug event notification may come from outside the display * driver / device. An example of this is some USB Type-C setups where the hardware @@ -2834,7 +2835,8 @@ struct drm_connector *drm_connector_find_by_fwnode(struct fwnode_handle *fwnode) * This function can be used to report these out-of-band events after obtaining * a drm_connector reference through calling drm_connector_find_by_fwnode(). */ -void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode) +void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode, + enum drm_connector_hpd_state hpd_state) { struct drm_connector *connector; @@ -2843,7 +2845,7 @@ void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode) return; if (connector->funcs->oob_hotplug_event) - connector->funcs->oob_hotplug_event(connector); + connector->funcs->oob_hotplug_event(connector, hpd_state); drm_connector_put(connector); } diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 1046e7fe310a..a3c9dbae5cee 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4825,15 +4825,26 @@ static int intel_dp_connector_atomic_check(struct drm_connector *conn, return intel_modeset_synced_crtcs(state, conn); } -static void intel_dp_oob_hotplug_event(struct drm_connector *connector) +static void intel_dp_oob_hotplug_event(struct drm_connector *connector, + enum drm_connector_hpd_state hpd_state) { struct intel_encoder *encoder = intel_attached_encoder(to_intel_connector(connector)); struct drm_i915_private *i915 = to_i915(connector->dev); + bool hpd_high = hpd_state == DRM_CONNECTOR_HPD_HIGH; + unsigned int hpd_pin = encoder->hpd_pin; + bool need_work = false; spin_lock_irq(&i915->irq_lock); - i915->hotplug.event_bits |= BIT(encoder->hpd_pin); + if (hpd_high != test_bit(hpd_pin, &i915->hotplug.oob_hotplug_last_state)) { + i915->hotplug.event_bits |= BIT(hpd_pin); + + __assign_bit(hpd_pin, &i915->hotplug.oob_hotplug_last_state, hpd_high); + need_work = true; + } spin_unlock_irq(&i915->irq_lock); - queue_delayed_work(system_wq, &i915->hotplug.hotplug_work, 0); + + if (need_work) + queue_delayed_work(system_wq, &i915->hotplug.hotplug_work, 0); } static const struct drm_connector_funcs intel_dp_connector_funcs = { diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 5cfe69b30841..80a4615a38e2 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -138,6 +138,9 @@ struct i915_hotplug { /* Whether or not to count short HPD IRQs in HPD storms */ u8 hpd_short_storm_enabled; + /* Last state reported by oob_hotplug_event for each encoder */ + unsigned long oob_hotplug_last_state; + /* * if we get a HPD irq from DP and a HPD irq from non-DP * the non-DP HPD could block the workqueue on a mode config diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c index c1d8c23baa39..ea9cb1d71fd2 100644 --- a/drivers/usb/typec/altmodes/displayport.c +++ b/drivers/usb/typec/altmodes/displayport.c @@ -59,7 +59,6 @@ struct dp_altmode { struct typec_displayport_data data; enum dp_state state; - bool hpd; struct mutex lock; /* device lock */ struct work_struct work; @@ -143,10 +142,8 @@ static int dp_altmode_status_update(struct dp_altmode *dp) if (!ret) dp->state = DP_STATE_CONFIGURE; } else { - if (dp->hpd != hpd) { - drm_connector_oob_hotplug_event(dp->connector_fwnode); - dp->hpd = hpd; - } + drm_connector_oob_hotplug_event(dp->connector_fwnode, + hpd ? DRM_CONNECTOR_HPD_HIGH : DRM_CONNECTOR_HPD_LOW); } return ret; @@ -573,8 +570,7 @@ void dp_altmode_remove(struct typec_altmode *alt) cancel_work_sync(&dp->work); if (dp->connector_fwnode) { - if (dp->hpd) - drm_connector_oob_hotplug_event(dp->connector_fwnode); + drm_connector_oob_hotplug_event(dp->connector_fwnode, DRM_CONNECTOR_HPD_LOW); fwnode_handle_put(dp->connector_fwnode); } diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 64cf5f88c05b..bd2f305fa670 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -142,6 +142,11 @@ enum subpixel_order { }; +enum drm_connector_hpd_state { + DRM_CONNECTOR_HPD_LOW, + DRM_CONNECTOR_HPD_HIGH +}; + /** * struct drm_scrambling: sink's scrambling support. */ @@ -1141,7 +1146,8 @@ struct drm_connector_funcs { * This will get called when a hotplug-event for a drm-connector * has been received from a source outside the display driver / device. */ - void (*oob_hotplug_event)(struct drm_connector *connector); + void (*oob_hotplug_event)(struct drm_connector *connector, + enum drm_connector_hpd_state hpd_state); }; /** @@ -1742,7 +1748,8 @@ drm_connector_is_unregistered(struct drm_connector *connector) DRM_CONNECTOR_UNREGISTERED; } -void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode); +void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode, + enum drm_connector_hpd_state hpd_state); const char *drm_get_connector_type_name(unsigned int connector_type); const char *drm_get_connector_status_name(enum drm_connector_status status); const char *drm_get_subpixel_order_name(enum subpixel_order order); From patchwork Fri Mar 4 01:08:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 12768374 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC500C43219 for ; Fri, 4 Mar 2022 01:06:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233785AbiCDBH2 (ORCPT ); Thu, 3 Mar 2022 20:07:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230272AbiCDBH1 (ORCPT ); Thu, 3 Mar 2022 20:07:27 -0500 Received: from mail-oi1-x22d.google.com (mail-oi1-x22d.google.com [IPv6:2607:f8b0:4864:20::22d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9ADC117AED1 for ; Thu, 3 Mar 2022 17:06:40 -0800 (PST) Received: by mail-oi1-x22d.google.com with SMTP id x193so6508236oix.0 for ; Thu, 03 Mar 2022 17:06:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=t3nWe6fM1HVkjBUMHf+CEsn0gIjJiNshvBUlw4zjlyA=; b=i5APB157kDLH4uugQLkW+WkhLxdZwPfQVwcwK501fx9upDZvwwlFYv8llMCQHJJ+Q1 kVyKqLvBaFvvnD0ftWnH9Ve/tEv68SUr988i3iLC4T//ZgB6H+2FI+qV8odSfMb9wYHU PmoKw9idfKa67meyFAm0sWAOJiBuMXWR72dEziYskZbAbsyRJeLfWfDnoD6ccf8nfpPv w1G6QDXFJ9CX/l3s8dTaZjwMuzQtvVSprZUGzdZDLyJOCnB1YNz+qCjNoQ9ubv/OrpwO cGGK1+MUeKgoFiysDeOAd1SHgKpHAxCKG6daaWnvRUR7SMwplRMQ8359+XCjsCULbduy 0jpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=t3nWe6fM1HVkjBUMHf+CEsn0gIjJiNshvBUlw4zjlyA=; b=sNNo4yVxkgOit9v8XAnjtuRgzQO0SIxCliETNW9cl+/GwwL/JzVd0L7tOv+NuaZS7a CF0ioBaQQqGesnxjZe092+jWsoF4l6wqSlkORBLzR+762vsLyzErcr6ggBZVxWrHCWbM KpOCTqFGLKjUU16pcMszmONN4JfxAa4r24NiDvlK3ofKj4yIZABrlqO84g8dAELKdceL IWAKFQLpCwpFdiYf3U2gwIa7EKq2LVUDPiN1aRfhud4Gaf3S+Zo9o3KIK0bI5vMK+MtN sF5jIfNo1Ivrb+Aab0CVDiUNTeQZUhuQp/N49opNLgvJjXIo5ow7p8roVvLXAKSEU2Ny bWrQ== X-Gm-Message-State: AOAM531WcLJk9VsfiFaYaP0H73GNAqT3MznzWy6CP75HqGq4+1GoRlz6 cSuggB3+CzHEploMi4IQCJwVjA== X-Google-Smtp-Source: ABdhPJzBW6NhSImLIQGWIXESHt/Soyu/H4xnVElo6ZgoPx6e1MiwPxrDZcYL/A+g7+o36t3OX+tdjw== X-Received: by 2002:aca:1807:0:b0:2cf:216:3d5b with SMTP id h7-20020aca1807000000b002cf02163d5bmr7220144oih.18.1646355999802; Thu, 03 Mar 2022 17:06:39 -0800 (PST) Received: from ripper.. ([2600:1700:a0:3dc8:205:1bff:fec0:b9b3]) by smtp.gmail.com with ESMTPSA id l14-20020a4ac60e000000b002e0e75dcb82sm1709080ooq.12.2022.03.03.17.06.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Mar 2022 17:06:39 -0800 (PST) From: Bjorn Andersson To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , Rob Clark , Dmitry Baryshkov Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Sean Paul , Abhinav Kumar , Heikki Krogerus , Greg Kroah-Hartman , Stephen Boyd , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-usb@vger.kernel.org Subject: [PATCH v2 2/2] drm/msm/dp: Implement oob_hotplug_event() Date: Thu, 3 Mar 2022 17:08:27 -0800 Message-Id: <20220304010827.998080-2-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20220304010827.998080-1-bjorn.andersson@linaro.org> References: <20220304010827.998080-1-bjorn.andersson@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The Qualcomm DisplayPort driver contains traces of the necessary plumbing to hook up USB HPD, in the form of the dp_hpd module and the dp_usbpd_cb struct. Use this as basis for implementing the oob_hotplug_event() callback, by amending the dp_hpd module with the missing logic. Overall the solution is similar to what's done downstream, but upstream all the code to disect the HPD notification lives on the calling side of drm_connector_oob_hotplug_event(). drm_connector_oob_hotplug_event() performs the lookup of the drm_connector based on fwnode, hence the need to assign the fwnode in dp_drm_connector_init(). Changes in v2: - Adopt enum drm_connector_hpd_state Signed-off-by: Bjorn Andersson --- drivers/gpu/drm/msm/dp/dp_display.c | 9 +++++++++ drivers/gpu/drm/msm/dp/dp_display.h | 3 +++ drivers/gpu/drm/msm/dp/dp_drm.c | 11 +++++++++++ drivers/gpu/drm/msm/dp/dp_hpd.c | 21 +++++++++++++++++++++ drivers/gpu/drm/msm/dp/dp_hpd.h | 5 +++++ 5 files changed, 49 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 178b774a5fbd..3d9d754a75f3 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -449,6 +449,14 @@ static int dp_display_usbpd_configure_cb(struct device *dev) return dp_display_process_hpd_high(dp); } +void dp_display_oob_hotplug_event(struct msm_dp *dp_display, + enum drm_connector_hpd_state hpd_state) +{ + struct dp_display_private *dp = container_of(dp_display, struct dp_display_private, dp_display); + + dp->usbpd->oob_event(dp->usbpd, hpd_state); +} + static int dp_display_usbpd_disconnect_cb(struct device *dev) { struct dp_display_private *dp = dev_get_dp_display_private(dev); @@ -1296,6 +1304,7 @@ static int dp_display_probe(struct platform_device *pdev) dp->pdev = pdev; dp->name = "drm_dp"; dp->dp_display.connector_type = desc->connector_type; + dp->dp_display.dev = &pdev->dev; rc = dp_init_sub_modules(dp); if (rc) { diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/dp_display.h index 7af2b186d2d9..16658270df2c 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.h +++ b/drivers/gpu/drm/msm/dp/dp_display.h @@ -11,6 +11,7 @@ #include "disp/msm_disp_snapshot.h" struct msm_dp { + struct device *dev; struct drm_device *drm_dev; struct device *codec_dev; struct drm_bridge *bridge; @@ -40,5 +41,7 @@ bool dp_display_check_video_test(struct msm_dp *dp_display); int dp_display_get_test_bpp(struct msm_dp *dp_display); void dp_display_signal_audio_start(struct msm_dp *dp_display); void dp_display_signal_audio_complete(struct msm_dp *dp_display); +void dp_display_oob_hotplug_event(struct msm_dp *dp_display, + enum drm_connector_hpd_state hpd_state); #endif /* _DP_DISPLAY_H_ */ diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_drm.c index 80f59cf99089..76904b1601b1 100644 --- a/drivers/gpu/drm/msm/dp/dp_drm.c +++ b/drivers/gpu/drm/msm/dp/dp_drm.c @@ -123,6 +123,14 @@ static enum drm_mode_status dp_connector_mode_valid( return dp_display_validate_mode(dp_disp, mode->clock); } +static void dp_oob_hotplug_event(struct drm_connector *connector, + enum drm_connector_hpd_state hpd_state) +{ + struct msm_dp *dp_disp = to_dp_connector(connector)->dp_display; + + dp_display_oob_hotplug_event(dp_disp, hpd_state); +} + static const struct drm_connector_funcs dp_connector_funcs = { .detect = dp_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, @@ -130,6 +138,7 @@ static const struct drm_connector_funcs dp_connector_funcs = { .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, + .oob_hotplug_event = dp_oob_hotplug_event, }; static const struct drm_connector_helper_funcs dp_connector_helper_funcs = { @@ -160,6 +169,8 @@ struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display) if (ret) return ERR_PTR(ret); + connector->fwnode = fwnode_handle_get(dev_fwnode(dp_display->dev)); + drm_connector_helper_add(connector, &dp_connector_helper_funcs); /* diff --git a/drivers/gpu/drm/msm/dp/dp_hpd.c b/drivers/gpu/drm/msm/dp/dp_hpd.c index db98a1d431eb..cdb1feea5ebf 100644 --- a/drivers/gpu/drm/msm/dp/dp_hpd.c +++ b/drivers/gpu/drm/msm/dp/dp_hpd.c @@ -7,6 +7,8 @@ #include #include +#include +#include #include "dp_hpd.h" @@ -45,6 +47,24 @@ int dp_hpd_connect(struct dp_usbpd *dp_usbpd, bool hpd) return rc; } +static void dp_hpd_oob_event(struct dp_usbpd *dp_usbpd, + enum drm_connector_hpd_state hpd_state) +{ + struct dp_hpd_private *hpd_priv = container_of(dp_usbpd, struct dp_hpd_private, dp_usbpd); + + DRM_DEBUG_DP("hpd_state: %d connected: %d\n", hpd_state, dp_usbpd->connected); + + if (!dp_usbpd->connected && hpd_state == DRM_CONNECTOR_HPD_HIGH) { + dp_usbpd->connected = true; + hpd_priv->dp_cb->configure(hpd_priv->dev); + } else if (hpd_state == DRM_CONNECTOR_HPD_LOW) { + dp_usbpd->connected = false; + hpd_priv->dp_cb->disconnect(hpd_priv->dev); + } else { + hpd_priv->dp_cb->attention(hpd_priv->dev); + } +} + struct dp_usbpd *dp_hpd_get(struct device *dev, struct dp_usbpd_cb *cb) { struct dp_hpd_private *dp_hpd; @@ -62,6 +82,7 @@ struct dp_usbpd *dp_hpd_get(struct device *dev, struct dp_usbpd_cb *cb) dp_hpd->dp_cb = cb; dp_hpd->dp_usbpd.connect = dp_hpd_connect; + dp_hpd->dp_usbpd.oob_event = dp_hpd_oob_event; return &dp_hpd->dp_usbpd; } diff --git a/drivers/gpu/drm/msm/dp/dp_hpd.h b/drivers/gpu/drm/msm/dp/dp_hpd.h index 8feec5aa5027..4166e5fd3156 100644 --- a/drivers/gpu/drm/msm/dp/dp_hpd.h +++ b/drivers/gpu/drm/msm/dp/dp_hpd.h @@ -29,7 +29,9 @@ enum plug_orientation { * @hpd_irq: Change in the status since last message * @alt_mode_cfg_done: bool to specify alt mode status * @debug_en: bool to specify debug mode + * @connected: cable currently connected * @connect: simulate disconnect or connect for debug mode + * @oob_event: deliver oob event to the usbpd code */ struct dp_usbpd { enum plug_orientation orientation; @@ -41,8 +43,11 @@ struct dp_usbpd { bool hpd_irq; bool alt_mode_cfg_done; bool debug_en; + bool connected; int (*connect)(struct dp_usbpd *dp_usbpd, bool hpd); + void (*oob_event)(struct dp_usbpd *dp_usbpd, + enum drm_connector_hpd_state hpd_state); }; /**