From patchwork Thu Nov 15 23:06:40 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 10685291 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B9E6613B5 for ; Thu, 15 Nov 2018 23:07:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AC5F02D4D2 for ; Thu, 15 Nov 2018 23:07:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A032A2D5C3; Thu, 15 Nov 2018 23:07:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 476B22D4D2 for ; Thu, 15 Nov 2018 23:07:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725998AbeKPJQ5 (ORCPT ); Fri, 16 Nov 2018 04:16:57 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:47466 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725860AbeKPJQ5 (ORCPT ); Fri, 16 Nov 2018 04:16:57 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id 7B05D27E5A6 From: Sebastian Reichel To: Sebastian Reichel , Tomi Valkeinen , Tony Lindgren , Pavel Machek , Laurent Pinchart Cc: "H. Nikolaus Schaller" , dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Sebastian Reichel Subject: [PATCHv4 1/6] drm/omap: use DRM_DEBUG_DRIVER instead of CORE Date: Fri, 16 Nov 2018 00:06:40 +0100 Message-Id: <20181115230645.15748-2-sebastian.reichel@collabora.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181115230645.15748-1-sebastian.reichel@collabora.com> References: <20181115230645.15748-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This macro is only used by omapdrm, which should print debug messages using the DRIVER category instead of the default CORE category. Signed-off-by: Sebastian Reichel Acked-by: Pavel Machek --- drivers/gpu/drm/omapdrm/omap_drv.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h b/drivers/gpu/drm/omapdrm/omap_drv.h index bd7f2c227a25..3b4af517c92b 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.h +++ b/drivers/gpu/drm/omapdrm/omap_drv.h @@ -38,8 +38,8 @@ #include "omap_irq.h" #include "omap_plane.h" -#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) -#define VERB(fmt, ...) if (0) DRM_DEBUG(fmt, ##__VA_ARGS__) /* verbose debug */ +#define DBG(fmt, ...) DRM_DEBUG_DRIVER(fmt"\n", ##__VA_ARGS__) +#define VERB(fmt, ...) if (0) DRM_DEBUG_DRIVER(fmt, ##__VA_ARGS__) /* verbose debug */ #define MODULE_NAME "omapdrm" From patchwork Thu Nov 15 23:06:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 10685289 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2829514DB for ; Thu, 15 Nov 2018 23:07:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 19AA92D4D2 for ; Thu, 15 Nov 2018 23:07:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0D56B2D5C3; Thu, 15 Nov 2018 23:07:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A53752D4D2 for ; Thu, 15 Nov 2018 23:07:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389057AbeKPJRB (ORCPT ); Fri, 16 Nov 2018 04:17:01 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:47484 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725860AbeKPJRB (ORCPT ); Fri, 16 Nov 2018 04:17:01 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id 138E127E6BB From: Sebastian Reichel To: Sebastian Reichel , Tomi Valkeinen , Tony Lindgren , Pavel Machek , Laurent Pinchart Cc: "H. Nikolaus Schaller" , dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Sebastian Reichel Subject: [PATCHv4 2/6] drm/omap: populate DSI platform bus earlier Date: Fri, 16 Nov 2018 00:06:41 +0100 Message-Id: <20181115230645.15748-3-sebastian.reichel@collabora.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181115230645.15748-1-sebastian.reichel@collabora.com> References: <20181115230645.15748-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP After the changes from 4.20 the DSI encoder tries to find the attached panel before populating the DSI bus. If the panel is not found -EPROBE_DEFER is returned, so the DSI bus is never populated and the panel never added. Fix this by populating the DSI bus before searching for the video sink in dsi_init_output(). Fixes: 27d624527d992 ("drm/omap: dss: Acquire next dssdev at probe time") Signed-off-by: Sebastian Reichel Acked-by: Pavel Machek --- drivers/gpu/drm/omapdrm/dss/dsi.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index 0a485c5b982e..00a9c2ab9e6c 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -5418,9 +5418,15 @@ static int dsi_probe(struct platform_device *pdev) dsi->num_lanes_supported = 3; } + r = of_platform_populate(dev->of_node, NULL, NULL, dev); + if (r) { + DSSERR("Failed to populate DSI child devices: %d\n", r); + goto err_pm_disable; + } + r = dsi_init_output(dsi); if (r) - goto err_pm_disable; + goto err_of_depopulate; r = dsi_probe_of(dsi); if (r) { @@ -5428,22 +5434,16 @@ static int dsi_probe(struct platform_device *pdev) goto err_uninit_output; } - r = of_platform_populate(dev->of_node, NULL, NULL, dev); - if (r) { - DSSERR("Failed to populate DSI child devices: %d\n", r); - goto err_uninit_output; - } - r = component_add(&pdev->dev, &dsi_component_ops); if (r) - goto err_of_depopulate; + goto err_uninit_output; return 0; -err_of_depopulate: - of_platform_depopulate(dev); err_uninit_output: dsi_uninit_output(dsi); +err_of_depopulate: + of_platform_depopulate(dev); err_pm_disable: pm_runtime_disable(dev); return r; From patchwork Thu Nov 15 23:06:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 10685287 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BB85913B5 for ; Thu, 15 Nov 2018 23:07:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AC6752D5B9 for ; Thu, 15 Nov 2018 23:07:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A03412D5C3; Thu, 15 Nov 2018 23:07:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4BA932D4D2 for ; Thu, 15 Nov 2018 23:07:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725916AbeKPJRE (ORCPT ); Fri, 16 Nov 2018 04:17:04 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:47492 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725860AbeKPJRE (ORCPT ); Fri, 16 Nov 2018 04:17:04 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id 0BF4B27E6BC From: Sebastian Reichel To: Sebastian Reichel , Tomi Valkeinen , Tony Lindgren , Pavel Machek , Laurent Pinchart Cc: "H. Nikolaus Schaller" , dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Sebastian Reichel Subject: [PATCHv4 3/6] drm/omap: don't check dispc timings for DSI Date: Fri, 16 Nov 2018 00:06:42 +0100 Message-Id: <20181115230645.15748-4-sebastian.reichel@collabora.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181115230645.15748-1-sebastian.reichel@collabora.com> References: <20181115230645.15748-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP While all display types only forward their VM to the DISPC, this is not true for DSI. DSI calculates the VM for DISPC based on its own, but its not identical. Actually the DSI VM is not even a valid DISPC VM making this check fail. Let's restore the old behaviour and avoid checking the DISPC VM for DSI here. Fixes: 7c27fa57ef31 ("drm/omap: Call dispc timings check operation directly") Signed-off-by: Sebastian Reichel Acked-by: Pavel Machek --- drivers/gpu/drm/omapdrm/omap_connector.c | 8 +++++--- drivers/gpu/drm/omapdrm/omap_encoder.c | 8 +++++--- 2 files changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c index b81302c4bf9e..5c776d6211e1 100644 --- a/drivers/gpu/drm/omapdrm/omap_connector.c +++ b/drivers/gpu/drm/omapdrm/omap_connector.c @@ -280,9 +280,11 @@ static int omap_connector_mode_valid(struct drm_connector *connector, drm_display_mode_to_videomode(mode, &vm); mode->vrefresh = drm_mode_vrefresh(mode); - r = priv->dispc_ops->mgr_check_timings(priv->dispc, channel, &vm); - if (r) - goto done; + if (omap_connector->display->type != OMAP_DISPLAY_TYPE_DSI) { + r = priv->dispc_ops->mgr_check_timings(priv->dispc, channel, &vm); + if (r) + goto done; + } for (dssdev = omap_connector->output; dssdev; dssdev = dssdev->next) { if (!dssdev->ops->check_timings) diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c index 452e625f6ce3..32bbe3a80e7d 100644 --- a/drivers/gpu/drm/omapdrm/omap_encoder.c +++ b/drivers/gpu/drm/omapdrm/omap_encoder.c @@ -170,9 +170,11 @@ static int omap_encoder_atomic_check(struct drm_encoder *encoder, drm_display_mode_to_videomode(&crtc_state->mode, &vm); - ret = priv->dispc_ops->mgr_check_timings(priv->dispc, channel, &vm); - if (ret) - goto done; + if (omap_encoder->display->type != OMAP_DISPLAY_TYPE_DSI) { + ret = priv->dispc_ops->mgr_check_timings(priv->dispc, channel, &vm); + if (ret) + goto done; + } for (dssdev = omap_encoder->output; dssdev; dssdev = dssdev->next) { if (!dssdev->ops->check_timings) From patchwork Thu Nov 15 23:06:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 10685297 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B221E14DB for ; Thu, 15 Nov 2018 23:07:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A41242D4D2 for ; Thu, 15 Nov 2018 23:07:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 982262D5C3; Thu, 15 Nov 2018 23:07:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3FCA22D4D2 for ; Thu, 15 Nov 2018 23:07:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725948AbeKPJRP (ORCPT ); Fri, 16 Nov 2018 04:17:15 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:47512 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725860AbeKPJRO (ORCPT ); Fri, 16 Nov 2018 04:17:14 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id DDE8F27E75C From: Sebastian Reichel To: Sebastian Reichel , Tomi Valkeinen , Tony Lindgren , Pavel Machek , Laurent Pinchart Cc: "H. Nikolaus Schaller" , dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Sebastian Reichel Subject: [PATCHv4 4/6] drm/omap: fix incorrect union usage Date: Fri, 16 Nov 2018 00:06:43 +0100 Message-Id: <20181115230645.15748-5-sebastian.reichel@collabora.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181115230645.15748-1-sebastian.reichel@collabora.com> References: <20181115230645.15748-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The DSI encoder sets dssdev->ops->dsi.set_config, which is stored at the same offset as dssdev->ops->hdmi.set_hdmi_mode. The code in omap_encoder only checks if dssdev->ops->hdmi.set_hdmi_mode is NULL. Due to the way union works, it won't be NULL if dsi.set_config is set. This means dsi_set_config will be called with config=hdmi_mode=false=NULL parameter resulting in a NULL dereference. Also the dereference happens while console is locked, so kernel hangs without any debug output (can be avoided by fbmem's lockless_register_fb=1 parameter). This fixes the issue by exiting early if the output type definitely has no hdmi_set operations. Fixes: 83910ad3f51fb ("drm/omap: Move most omap_dss_driver operations to omap_dss_device_ops") Signed-off-by: Sebastian Reichel --- drivers/gpu/drm/omapdrm/omap_encoder.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c index 32bbe3a80e7d..ba0099f0644c 100644 --- a/drivers/gpu/drm/omapdrm/omap_encoder.c +++ b/drivers/gpu/drm/omapdrm/omap_encoder.c @@ -122,6 +122,14 @@ static void omap_encoder_mode_set(struct drm_encoder *encoder, dssdev = omap_encoder->output; + /* The following operations access dssdev->ops->hdmi, which is a union + * also used by DSI. This ensures, that the field does not have data + * for DSI (or any other future output type). + */ + if (dssdev->output_type != OMAP_DISPLAY_TYPE_HDMI && + dssdev->output_type != OMAP_DISPLAY_TYPE_DVI) + return; + if (dssdev->ops->hdmi.set_hdmi_mode) dssdev->ops->hdmi.set_hdmi_mode(dssdev, hdmi_mode); From patchwork Thu Nov 15 23:06:44 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 10685295 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5B5A113B5 for ; Thu, 15 Nov 2018 23:07:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4D2C92D4D2 for ; Thu, 15 Nov 2018 23:07:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 40C6C2D5C3; Thu, 15 Nov 2018 23:07:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BC9572D4D2 for ; Thu, 15 Nov 2018 23:07:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389154AbeKPJRS (ORCPT ); Fri, 16 Nov 2018 04:17:18 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:47530 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725860AbeKPJRS (ORCPT ); Fri, 16 Nov 2018 04:17:18 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id D3E9927E788 From: Sebastian Reichel To: Sebastian Reichel , Tomi Valkeinen , Tony Lindgren , Pavel Machek , Laurent Pinchart Cc: "H. Nikolaus Schaller" , dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Sebastian Reichel Subject: [PATCHv4 5/6] drm/omap: add framedone interrupt support Date: Fri, 16 Nov 2018 00:06:44 +0100 Message-Id: <20181115230645.15748-6-sebastian.reichel@collabora.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181115230645.15748-1-sebastian.reichel@collabora.com> References: <20181115230645.15748-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This prepares framedone interrupt handling for manual display update support. Signed-off-by: Sebastian Reichel Acked-by: Pavel Machek --- drivers/gpu/drm/omapdrm/omap_crtc.c | 50 +++++++++++++++++++++++++++++ drivers/gpu/drm/omapdrm/omap_crtc.h | 1 + drivers/gpu/drm/omapdrm/omap_irq.c | 25 +++++++++++++++ drivers/gpu/drm/omapdrm/omap_irq.h | 1 + 4 files changed, 77 insertions(+) diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c index caffc547ef97..59ee2399f2e9 100644 --- a/drivers/gpu/drm/omapdrm/omap_crtc.c +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c @@ -52,6 +52,9 @@ struct omap_crtc { bool pending; wait_queue_head_t pending_wait; struct drm_pending_vblank_event *event; + + void (*framedone_handler)(void *); + void *framedone_handler_data; }; /* ----------------------------------------------------------------------------- @@ -231,6 +234,18 @@ static int omap_crtc_dss_register_framedone( struct omap_drm_private *priv, enum omap_channel channel, void (*handler)(void *), void *data) { + struct drm_crtc *crtc = priv->channels[channel]->crtc; + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct drm_device *dev = omap_crtc->base.dev; + + if (omap_crtc->framedone_handler) + return -EBUSY; + + dev_dbg(dev->dev, "register framedone %s", omap_crtc->name); + + omap_crtc->framedone_handler = handler; + omap_crtc->framedone_handler_data = data; + return 0; } @@ -238,6 +253,17 @@ static void omap_crtc_dss_unregister_framedone( struct omap_drm_private *priv, enum omap_channel channel, void (*handler)(void *), void *data) { + struct drm_crtc *crtc = priv->channels[channel]->crtc; + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct drm_device *dev = omap_crtc->base.dev; + + dev_dbg(dev->dev, "unregister framedone %s", omap_crtc->name); + + WARN_ON(omap_crtc->framedone_handler != handler); + WARN_ON(omap_crtc->framedone_handler_data != data); + + omap_crtc->framedone_handler = NULL; + omap_crtc->framedone_handler_data = NULL; } static const struct dss_mgr_ops mgr_ops = { @@ -303,6 +329,30 @@ void omap_crtc_vblank_irq(struct drm_crtc *crtc) DBG("%s: apply done", omap_crtc->name); } +void omap_crtc_framedone_irq(struct drm_crtc *crtc, uint32_t irqstatus) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + + if (!omap_crtc->framedone_handler) { + dev_warn(omap_crtc->base.dev->dev, "no framedone handler?"); + return; + } + + omap_crtc->framedone_handler(omap_crtc->framedone_handler_data); + + spin_lock(&crtc->dev->event_lock); + /* Send the vblank event if one has been requested. */ + if (omap_crtc->event) { + drm_crtc_send_vblank_event(crtc, omap_crtc->event); + omap_crtc->event = NULL; + } + omap_crtc->pending = false; + spin_unlock(&crtc->dev->event_lock); + + /* Wake up omap_atomic_complete. */ + wake_up(&omap_crtc->pending_wait); +} + static void omap_crtc_write_crtc_properties(struct drm_crtc *crtc) { struct omap_drm_private *priv = crtc->dev->dev_private; diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.h b/drivers/gpu/drm/omapdrm/omap_crtc.h index d9de437ba9dd..d33bbb7a4f90 100644 --- a/drivers/gpu/drm/omapdrm/omap_crtc.h +++ b/drivers/gpu/drm/omapdrm/omap_crtc.h @@ -41,5 +41,6 @@ struct drm_crtc *omap_crtc_init(struct drm_device *dev, int omap_crtc_wait_pending(struct drm_crtc *crtc); void omap_crtc_error_irq(struct drm_crtc *crtc, u32 irqstatus); void omap_crtc_vblank_irq(struct drm_crtc *crtc); +void omap_crtc_framedone_irq(struct drm_crtc *crtc, uint32_t irqstatus); #endif /* __OMAPDRM_CRTC_H__ */ diff --git a/drivers/gpu/drm/omapdrm/omap_irq.c b/drivers/gpu/drm/omapdrm/omap_irq.c index 329ad26d6d50..01dda84ca2ee 100644 --- a/drivers/gpu/drm/omapdrm/omap_irq.c +++ b/drivers/gpu/drm/omapdrm/omap_irq.c @@ -85,6 +85,28 @@ int omap_irq_wait(struct drm_device *dev, struct omap_irq_wait *wait, return ret == 0 ? -1 : 0; } +int omap_irq_enable_framedone(struct drm_crtc *crtc, bool enable) +{ + struct drm_device *dev = crtc->dev; + struct omap_drm_private *priv = dev->dev_private; + unsigned long flags; + enum omap_channel channel = omap_crtc_channel(crtc); + int framedone_irq = + priv->dispc_ops->mgr_get_framedone_irq(priv->dispc, channel); + + DBG("dev=%p, crtc=%u, enable=%d", dev, channel, enable); + + spin_lock_irqsave(&priv->wait_lock, flags); + if (enable) + priv->irq_mask |= framedone_irq; + else + priv->irq_mask &= ~framedone_irq; + omap_irq_update(dev); + spin_unlock_irqrestore(&priv->wait_lock, flags); + + return 0; +} + /** * enable_vblank - enable vblank interrupt events * @dev: DRM device @@ -217,6 +239,9 @@ static irqreturn_t omap_irq_handler(int irq, void *arg) if (irqstatus & priv->dispc_ops->mgr_get_sync_lost_irq(priv->dispc, channel)) omap_crtc_error_irq(crtc, irqstatus); + + if (irqstatus & priv->dispc_ops->mgr_get_framedone_irq(priv->dispc, channel)) + omap_crtc_framedone_irq(crtc, irqstatus); } omap_irq_ocp_error_handler(dev, irqstatus); diff --git a/drivers/gpu/drm/omapdrm/omap_irq.h b/drivers/gpu/drm/omapdrm/omap_irq.h index 9d5441468eca..02abb4ed9813 100644 --- a/drivers/gpu/drm/omapdrm/omap_irq.h +++ b/drivers/gpu/drm/omapdrm/omap_irq.h @@ -27,6 +27,7 @@ struct drm_device; struct omap_irq_wait; int omap_irq_enable_vblank(struct drm_crtc *crtc); +int omap_irq_enable_framedone(struct drm_crtc *crtc, bool enable); void omap_irq_disable_vblank(struct drm_crtc *crtc); void omap_drm_irq_uninstall(struct drm_device *dev); int omap_drm_irq_install(struct drm_device *dev); From patchwork Thu Nov 15 23:06:45 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 10685293 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 51F0A13B5 for ; Thu, 15 Nov 2018 23:07:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4368D2D4D2 for ; Thu, 15 Nov 2018 23:07:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 374A02D5C3; Thu, 15 Nov 2018 23:07:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 687972D4D2 for ; Thu, 15 Nov 2018 23:07:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389175AbeKPJRW (ORCPT ); Fri, 16 Nov 2018 04:17:22 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:47544 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725860AbeKPJRV (ORCPT ); Fri, 16 Nov 2018 04:17:21 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id C529027E79E From: Sebastian Reichel To: Sebastian Reichel , Tomi Valkeinen , Tony Lindgren , Pavel Machek , Laurent Pinchart Cc: "H. Nikolaus Schaller" , dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Sebastian Reichel Subject: [PATCHv4 6/6] drm/omap: add support for manually updated displays Date: Fri, 16 Nov 2018 00:06:45 +0100 Message-Id: <20181115230645.15748-7-sebastian.reichel@collabora.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181115230645.15748-1-sebastian.reichel@collabora.com> References: <20181115230645.15748-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This adds the required infrastructure for manually updated displays, such as DSI command mode panels. While those panels often support partial updates we currently always do a full refresh. The display will be refreshed when something calls the dirty callback, such as libdrm's drmModeDirtyFB(). This is currently being done at least by the kernel console and Xorg (with modesetting driver) in their default configuration. Weston does not implement this and the fbdev backend does not work (display will not update). Weston's DRM backend uses double buffering and the page flip will trigger a display refresh and seems to work as expected. Signed-off-by: Sebastian Reichel Acked-by: Pavel Machek --- drivers/gpu/drm/omapdrm/omap_crtc.c | 116 ++++++++++++++++++++++++++-- drivers/gpu/drm/omapdrm/omap_crtc.h | 1 + drivers/gpu/drm/omapdrm/omap_fb.c | 41 ++++++++++ 3 files changed, 153 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c index 59ee2399f2e9..affbac28a64e 100644 --- a/drivers/gpu/drm/omapdrm/omap_crtc.c +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c @@ -33,6 +33,7 @@ struct omap_crtc_state { /* Shadow values for legacy userspace support. */ unsigned int rotation; unsigned int zpos; + bool manually_updated; }; #define to_omap_crtc(x) container_of(x, struct omap_crtc, base) @@ -52,6 +53,7 @@ struct omap_crtc { bool pending; wait_queue_head_t pending_wait; struct drm_pending_vblank_event *event; + struct delayed_work update_work; void (*framedone_handler)(void *); void *framedone_handler_data; @@ -106,21 +108,18 @@ int omap_crtc_wait_pending(struct drm_crtc *crtc) /* * Manager-ops, callbacks from output when they need to configure * the upstream part of the video pipe. - * - * Most of these we can ignore until we add support for command-mode - * panels.. for video-mode the crtc-helpers already do an adequate - * job of sequencing the setup of the video pipe in the proper order */ -/* we can probably ignore these until we support command-mode panels: */ static void omap_crtc_dss_start_update(struct omap_drm_private *priv, enum omap_channel channel) { + priv->dispc_ops->mgr_enable(priv->dispc, channel, true); } /* Called only from the encoder enable/disable and suspend/resume handlers. */ static void omap_crtc_set_enabled(struct drm_crtc *crtc, bool enable) { + struct omap_crtc_state *omap_state = to_omap_crtc_state(crtc->state); struct drm_device *dev = crtc->dev; struct omap_drm_private *priv = dev->dev_private; struct omap_crtc *omap_crtc = to_omap_crtc(crtc); @@ -132,6 +131,12 @@ static void omap_crtc_set_enabled(struct drm_crtc *crtc, bool enable) if (WARN_ON(omap_crtc->enabled == enable)) return; + if (omap_state->manually_updated) { + omap_irq_enable_framedone(crtc, enable); + omap_crtc->enabled = enable; + return; + } + if (omap_crtc->pipe->output->output_type == OMAP_DISPLAY_TYPE_HDMI) { priv->dispc_ops->mgr_enable(priv->dispc, channel, enable); omap_crtc->enabled = enable; @@ -353,6 +358,54 @@ void omap_crtc_framedone_irq(struct drm_crtc *crtc, uint32_t irqstatus) wake_up(&omap_crtc->pending_wait); } +void omap_crtc_flush(struct drm_crtc *crtc) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct omap_crtc_state *omap_state = to_omap_crtc_state(crtc->state); + + if (!omap_state->manually_updated) + return; + + if (!delayed_work_pending(&omap_crtc->update_work)) + schedule_delayed_work(&omap_crtc->update_work, 0); +} + +static void omap_crtc_manual_display_update(struct work_struct *data) +{ + struct omap_crtc *omap_crtc = + container_of(data, struct omap_crtc, update_work.work); + struct omap_dss_device *dssdev = omap_crtc->pipe->display; + struct drm_device *dev = omap_crtc->base.dev; + const struct omap_dss_driver *dssdrv; + struct videomode vm = {0}; + int ret; + + if (!dssdev) { + dev_err_once(dev->dev, "missing display dssdev!"); + return; + } + + dssdrv = dssdev->driver; + if (!dssdrv || !dssdrv->update) { + dev_err_once(dev->dev, "missing or incorrect dssdrv!"); + return; + } + + if (dssdrv->sync) + dssdrv->sync(dssdev); + + if (dssdev->ops->get_timings) + dssdev->ops->get_timings(dssdev, &vm); + + ret = dssdrv->update(dssdev, 0, 0, vm.hactive, vm.vactive); + if (ret < 0) { + spin_lock_irq(&dev->event_lock); + omap_crtc->pending = false; + spin_unlock_irq(&dev->event_lock); + wake_up(&omap_crtc->pending_wait); + } +} + static void omap_crtc_write_crtc_properties(struct drm_crtc *crtc) { struct omap_drm_private *priv = crtc->dev->dev_private; @@ -402,12 +455,17 @@ static void omap_crtc_atomic_enable(struct drm_crtc *crtc, { struct omap_drm_private *priv = crtc->dev->dev_private; struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct omap_crtc_state *omap_state = to_omap_crtc_state(crtc->state); int ret; DBG("%s", omap_crtc->name); priv->dispc_ops->runtime_get(priv->dispc); + /* manual updated display will not trigger vsync irq */ + if (omap_state->manually_updated) + return; + spin_lock_irq(&crtc->dev->event_lock); drm_crtc_vblank_on(crtc); ret = drm_crtc_vblank_get(crtc); @@ -422,6 +480,7 @@ static void omap_crtc_atomic_disable(struct drm_crtc *crtc, { struct omap_drm_private *priv = crtc->dev->dev_private; struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct drm_device *dev = crtc->dev; DBG("%s", omap_crtc->name); @@ -432,6 +491,11 @@ static void omap_crtc_atomic_disable(struct drm_crtc *crtc, } spin_unlock_irq(&crtc->dev->event_lock); + cancel_delayed_work(&omap_crtc->update_work); + + if (!omap_crtc_wait_pending(crtc)) + dev_warn(dev->dev, "manual display update did not finish!"); + drm_crtc_vblank_off(crtc); priv->dispc_ops->runtime_put(priv->dispc); @@ -487,6 +551,22 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc *crtc) drm_display_mode_to_videomode(mode, &omap_crtc->vm); } +static bool omap_crtc_is_manually_updated(struct drm_crtc *crtc) +{ + struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct omap_dss_device *display = omap_crtc->pipe->display; + + if (!display) + return false; + + if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) { + DBG("detected manually updated display!"); + return true; + } + + return false; +} + static int omap_crtc_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state) { @@ -508,6 +588,9 @@ static int omap_crtc_atomic_check(struct drm_crtc *crtc, /* Mirror new values for zpos and rotation in omap_crtc_state */ omap_crtc_state->zpos = pri_state->zpos; omap_crtc_state->rotation = pri_state->rotation; + + /* Check if this CRTC is for a manually updated display */ + omap_crtc_state->manually_updated = omap_crtc_is_manually_updated(crtc); } return 0; @@ -523,6 +606,7 @@ static void omap_crtc_atomic_flush(struct drm_crtc *crtc, { struct omap_drm_private *priv = crtc->dev->dev_private; struct omap_crtc *omap_crtc = to_omap_crtc(crtc); + struct omap_crtc_state *omap_crtc_state = to_omap_crtc_state(crtc->state); int ret; if (crtc->state->color_mgmt_changed) { @@ -547,6 +631,15 @@ static void omap_crtc_atomic_flush(struct drm_crtc *crtc, DBG("%s: GO", omap_crtc->name); + if (omap_crtc_state->manually_updated) { + /* send new image for page flips and modeset changes */ + spin_lock_irq(&crtc->dev->event_lock); + omap_crtc_flush(crtc); + omap_crtc_arm_event(crtc); + spin_unlock_irq(&crtc->dev->event_lock); + return; + } + ret = drm_crtc_vblank_get(crtc); WARN_ON(ret != 0); @@ -632,6 +725,7 @@ omap_crtc_duplicate_state(struct drm_crtc *crtc) state->zpos = current_state->zpos; state->rotation = current_state->rotation; + state->manually_updated = current_state->manually_updated; return &state->base; } @@ -708,6 +802,18 @@ struct drm_crtc *omap_crtc_init(struct drm_device *dev, omap_crtc->channel = channel; omap_crtc->name = channel_names[channel]; + /* We want to refresh manually updated displays from dirty callback, + * which is called quite often (e.g. for each drawn line). This will + * be used to do the display update asynchronously to avoid blocking + * the rendering process and merges multiple dirty calls into one + * update if they arrive very fast. We also call this function for + * atomic display updates (e.g. for page flips), which means we do + * not need extra locking. Atomic updates should be synchronous, but + * need to wait for the framedone interrupt anyways. + */ + INIT_DELAYED_WORK(&omap_crtc->update_work, + omap_crtc_manual_display_update); + ret = drm_crtc_init_with_planes(dev, crtc, plane, NULL, &omap_crtc_funcs, NULL); if (ret < 0) { diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.h b/drivers/gpu/drm/omapdrm/omap_crtc.h index d33bbb7a4f90..2b518c74203e 100644 --- a/drivers/gpu/drm/omapdrm/omap_crtc.h +++ b/drivers/gpu/drm/omapdrm/omap_crtc.h @@ -42,5 +42,6 @@ int omap_crtc_wait_pending(struct drm_crtc *crtc); void omap_crtc_error_irq(struct drm_crtc *crtc, u32 irqstatus); void omap_crtc_vblank_irq(struct drm_crtc *crtc); void omap_crtc_framedone_irq(struct drm_crtc *crtc, uint32_t irqstatus); +void omap_crtc_flush(struct drm_crtc *crtc); #endif /* __OMAPDRM_CRTC_H__ */ diff --git a/drivers/gpu/drm/omapdrm/omap_fb.c b/drivers/gpu/drm/omapdrm/omap_fb.c index 4d264fd554d8..5962cf5c744d 100644 --- a/drivers/gpu/drm/omapdrm/omap_fb.c +++ b/drivers/gpu/drm/omapdrm/omap_fb.c @@ -66,8 +66,49 @@ struct omap_framebuffer { struct mutex lock; }; +/* iterate thru all the crts, returning ones that are attached to the same fb */ +static struct drm_crtc *omap_framebuffer_get_next_crtc( + struct drm_framebuffer *fb, struct drm_crtc *from) +{ + struct drm_device *dev = fb->dev; + struct list_head *crtc_list = &dev->mode_config.crtc_list; + struct drm_crtc *crtc = from; + + if (!from) + return list_first_entry_or_null(crtc_list, typeof(*from), head); + + list_for_each_entry_from(crtc, crtc_list, head) { + if (crtc == from) + continue; + + if (crtc && crtc->primary->fb == fb) + return crtc; + } + + return NULL; +} + +static int omap_framebuffer_dirty(struct drm_framebuffer *fb, + struct drm_file *file_priv, + unsigned flags, unsigned color, + struct drm_clip_rect *clips, + unsigned num_clips) +{ + struct drm_crtc *crtc = NULL; + + drm_modeset_lock_all(fb->dev); + + while ((crtc = omap_framebuffer_get_next_crtc(fb, crtc))) + omap_crtc_flush(crtc); + + drm_modeset_unlock_all(fb->dev); + + return 0; +} + static const struct drm_framebuffer_funcs omap_framebuffer_funcs = { .create_handle = drm_gem_fb_create_handle, + .dirty = omap_framebuffer_dirty, .destroy = drm_gem_fb_destroy, };