From patchwork Fri Apr 22 22:32:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 12824297 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 8DECFC433FE for ; Fri, 22 Apr 2022 22:59:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233802AbiDVXCH (ORCPT ); Fri, 22 Apr 2022 19:02:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39000 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234073AbiDVXCA (ORCPT ); Fri, 22 Apr 2022 19:02:00 -0400 Received: from mail-oa1-x33.google.com (mail-oa1-x33.google.com [IPv6:2001:4860:4864:20::33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6DDD3B42EC for ; Fri, 22 Apr 2022 15:30:24 -0700 (PDT) Received: by mail-oa1-x33.google.com with SMTP id 586e51a60fabf-e5e433d66dso10086967fac.5 for ; Fri, 22 Apr 2022 15:30:24 -0700 (PDT) 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=kP//HR35fwPeoJIWDnQ9t8h/RUl4z3SobdBwAH82byo=; b=ybkqhsmHD3HxtuOWkqnpe/v2PQw9y15Tztx37StdRZIiiTZ3qw4yUGVAYoNIDnU8yl lt82cmiIAmJkZPgBWuvu3oejm10xJ1lQ2zufbBQeM9jbeYZUZHKHcmcum0NVVxrjsvsw KwDxbfzsHQdHhg2MyHR5z6D6kwSmgMF5nZ42dGY/7A8LVTtEAeZ2FAdDV0ZksSYYET4M o7EQ0XhsoC9nrwjvSQNxAi5At5h1RGTuFsnJL7ml3aC7XOgC2iBaggrQ1ggOU/S1SUPW JVv+FmIVgHsfBfB61/CifJUbPEA/UtoO9ImOiU+CUvWNcLLd2JWp1X59DWKAPvlG4kPD MZlQ== 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=kP//HR35fwPeoJIWDnQ9t8h/RUl4z3SobdBwAH82byo=; b=reUUaFzk2nFBRmZmPhwtbCow490VVDdEY1M5aW4viievoamue3Ff4ZkBKARqW5kXHD MA5iQnThhgRAFotkYBMy0lFxvfThbrYF0k3SzkmS1GeExhlVDN3WCO6VrGGM5DjNS6cP v/EtHUmRac4nMO8lhlqsodviddUTbto/SM7VLAMY3if/avU/GLCGtnqnWXiocU392Py2 Y5cb3+UDyTuk45aW06RTsAX62ULU1luZcoJENXLsoew7OvRCd9LRD//TCHTEm18L6HSZ kmklmKlTJuuTZkrjLmwmriTVhDjOK4RuSSMEQ9a9QG2BonobzqEOp1Z7xwDKA/P5W8pK vVHg== X-Gm-Message-State: AOAM533Ms36t7QjO4Op7xfM3Dsu/j62/sd07SB+Qbi0KHjRsoZFjJK4W 5P4wImwZ4mtLUipm79KvMyaPlA== X-Google-Smtp-Source: ABdhPJwPwgpoSu2iw9z7OvRsE1QdiYl3ZbHWQPjGz+2aLmYsNtphoB2DxOdIU8HCtyLAWCt0jGHV5A== X-Received: by 2002:a05:6870:e610:b0:e9:435:6910 with SMTP id q16-20020a056870e61000b000e904356910mr1872055oag.77.1650666623796; Fri, 22 Apr 2022 15:30:23 -0700 (PDT) Received: from ripper.. ([2600:1700:a0:3dc8:205:1bff:fec0:b9b3]) by smtp.gmail.com with ESMTPSA id a14-20020a544e0e000000b002f9c00dc626sm1218831oiy.28.2022.04.22.15.30.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Apr 2022 15:30:23 -0700 (PDT) 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 v3 1/2] drm: Add HPD state to drm_connector_oob_hotplug_event() Date: Fri, 22 Apr 2022 15:32:24 -0700 Message-Id: <20220422223225.1297434-1-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.35.1 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. Signed-off-by: Bjorn Andersson --- Changs since v2: - The i915 cached hpd_state is tracked per encoder. 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 76a8c707c34b..fff8c74d1ae6 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -2828,6 +2828,7 @@ 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 @@ -2837,7 +2838,8 @@ 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; @@ -2846,7 +2848,7 @@ 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 d55acc4a028a..2907d8e1f80e 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4950,15 +4950,26 @@ 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 3711d618a372..71d0c7130ddd 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -134,6 +134,9 @@ 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 5166186146f4..3ccb5ecc9ea4 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); /** * @debugfs_init: @@ -1749,7 +1755,8 @@ 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 Apr 22 22:32:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 12824296 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 C06B5C433F5 for ; Fri, 22 Apr 2022 22:59:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234157AbiDVXCC (ORCPT ); Fri, 22 Apr 2022 19:02:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38394 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234152AbiDVXBo (ORCPT ); Fri, 22 Apr 2022 19:01:44 -0400 Received: from mail-oa1-x30.google.com (mail-oa1-x30.google.com [IPv6:2001:4860:4864:20::30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 167A4113CB3 for ; Fri, 22 Apr 2022 15:30:25 -0700 (PDT) Received: by mail-oa1-x30.google.com with SMTP id 586e51a60fabf-e2fa360f6dso10093972fac.2 for ; Fri, 22 Apr 2022 15:30:25 -0700 (PDT) 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=llCxmLTdaCZHW14cipFv3zKVNDfg4S3k4Clp+5fnjFI=; b=h5DEHQlk+fmuvc0+DZD9NC4Fe0/4QoIQmg5FvCBetRbm49gLG1iDmBKTdFHUn6XSpE OfSVgokMm/O0iAioCNkrA0iUo1CoNtJM/2d4RA6abyhjtj713jxNEiwssjzL/I/3PvSc XZi9PDjbvj2mubCQvkvMFuRHm4CO2ry/q7KT4AHO1rOkSun8blesvUHXZeWfNe9hUh5D Z59EZCa3f1JkopcFSBhwO4k9CJqkGRm3mmP+/0dOduKiPYTJDMVIBtRHmSKgGz4xM1QD UctwP0Ov9asO/GKAoDV+nV9giz54Lc2+C3t2pQeatIEpWNEmipI+ffeNoa9FUdiUh8+1 x7lQ== 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=llCxmLTdaCZHW14cipFv3zKVNDfg4S3k4Clp+5fnjFI=; b=EbCliKNKbgmRSmyMSE6aY3+T9o/yc53yuVP1MBHNKvwtsC772hY98cwN4jxih2hn2j 7s0n/qUfENFN9t9JMSjQFNkD+EODiXwlqmS1cp5y56wwUI00yVduTsKiX8YfjC8ivNyS cKBhItYjc7oTxZcbM6Mv3YB68jcKbI6jjd+n/43GdZqSemU3mSTg23Humwt907xa8/Vb ZSZGbfoV8KfXVWzS1/B0cpFmE1uwXyG4XGnIGZpifhATzqIFn2Li/XXkRaCfYt5Xk6tR vDwbGo1qo3vJ+hpjBEVQWApPHsrqHssMWtk7eTkUDOUZb8fpsL/1tHeN16sxk0BZd9UV z+uQ== X-Gm-Message-State: AOAM532zCB8o+aq/jiclPQIP2J4oS11uoHbsddgiSFk7aaVcmvLAKFWb Yrkjl5Z577SZHkmivGVPipEUCA== X-Google-Smtp-Source: ABdhPJz138kHCGoPHhU2qrDzH3POGVzi1U1OMbGNcHB9jQ41j8e0vvGToVhUplDG6/T+BzbPAtV2pQ== X-Received: by 2002:a05:6870:f21d:b0:e1:cb99:bd46 with SMTP id t29-20020a056870f21d00b000e1cb99bd46mr2880205oao.140.1650666625046; Fri, 22 Apr 2022 15:30:25 -0700 (PDT) Received: from ripper.. ([2600:1700:a0:3dc8:205:1bff:fec0:b9b3]) by smtp.gmail.com with ESMTPSA id a14-20020a544e0e000000b002f9c00dc626sm1218831oiy.28.2022.04.22.15.30.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Apr 2022 15:30:24 -0700 (PDT) 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 v3 2/2] drm/msm/dp: Implement oob_hotplug_event() Date: Fri, 22 Apr 2022 15:32:25 -0700 Message-Id: <20220422223225.1297434-2-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220422223225.1297434-1-bjorn.andersson@linaro.org> References: <20220422223225.1297434-1-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(). Signed-off-by: Bjorn Andersson --- Changes since v2: - Rebased patch 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 a42732b67349..1019f6d8fd03 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); @@ -1302,6 +1310,7 @@ 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); }; /**