From patchwork Thu Jan 23 09:53:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 205428 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C75E1C2D0DB for ; Thu, 23 Jan 2020 09:53:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 942DB24655 for ; Thu, 23 Jan 2020 09:53:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728904AbgAWJxl (ORCPT ); Thu, 23 Jan 2020 04:53:41 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:43832 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726227AbgAWJxl (ORCPT ); Thu, 23 Jan 2020 04:53:41 -0500 Received: from localhost.localdomain (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: bbrezillon) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id B332D293142; Thu, 23 Jan 2020 09:53:37 +0000 (GMT) From: Boris Brezillon To: dri-devel@lists.freedesktop.org Cc: Lucas Stach , Chris Healy , Andrey Smirnov , Nikita Yushchenko , kernel@collabora.com, Daniel Vetter , Thierry Reding , Sam Ravnborg , Philipp Zabel , Andrzej Hajda , Neil Armstrong , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, intel-gfx-trybot@lists.freedesktop.org, Boris Brezillon Subject: [PATCH v8 01/12] drm/bridge: Add a drm_bridge_state object Date: Thu, 23 Jan 2020 10:53:22 +0100 Message-Id: <20200123095333.2085810-2-boris.brezillon@collabora.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200123095333.2085810-1-boris.brezillon@collabora.com> References: <20200123095333.2085810-1-boris.brezillon@collabora.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org One of the last remaining objects to not have its atomic state. This is being motivated by our attempt to support runtime bus-format negotiation between elements of the bridge chain. This patch just paves the road for such a feature by adding a new drm_bridge_state object inheriting from drm_private_obj so we can re-use some of the existing state initialization/tracking logic. Signed-off-by: Boris Brezillon Signed-off-by: Neil Armstrong --- Changes in v8: * Move bridge state helpers out of the CONFIG_DEBUGFS section Changes in v7: * Move helpers, struct-defs, ... to atomic helper files to avoid the drm -> drm_kms_helper -> drm circular dep * Stop providing default implementation for atomic state reset, duplicate and destroy hooks (has to do with the helper/core split) * Drop all R-b/T-b as helpers have now be moved to other places --- drivers/gpu/drm/drm_atomic.c | 116 +++++++++++++++++++ drivers/gpu/drm/drm_atomic_helper.c | 20 ++++ drivers/gpu/drm/drm_atomic_state_helper.c | 131 ++++++++++++++++++++++ drivers/gpu/drm/drm_bridge.c | 29 ++++- include/drm/drm_atomic.h | 34 ++++++ include/drm/drm_atomic_state_helper.h | 13 +++ include/drm/drm_bridge.h | 53 +++++++++ 7 files changed, 391 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index d33691512a8e..85f8d2218a94 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -30,6 +30,7 @@ #include #include +#include #include #include #include @@ -1017,6 +1018,121 @@ static void drm_atomic_connector_print_state(struct drm_printer *p, connector->funcs->atomic_print_state(p, state); } +/** + * drm_atomic_get_bridge_state - get bridge state + * @state: global atomic state object + * @bridge: bridge to get state object for + * + * This function returns the bridge state for the given bridge, allocating it + * if needed. It will also grab the relevant bridge lock to make sure that the + * state is consistent. + * + * Returns: + * + * Either the allocated state or the error code encoded into the pointer. When + * the error is EDEADLK then the w/w mutex code has detected a deadlock and the + * entire atomic sequence must be restarted. + */ +struct drm_bridge_state * +drm_atomic_get_bridge_state(struct drm_atomic_state *state, + struct drm_bridge *bridge) +{ + struct drm_private_state *obj_state; + + obj_state = drm_atomic_get_private_obj_state(state, &bridge->base); + if (IS_ERR(obj_state)) + return ERR_CAST(obj_state); + + return drm_priv_to_bridge_state(obj_state); +} +EXPORT_SYMBOL(drm_atomic_get_bridge_state); + +/** + * drm_atomic_get_old_bridge_state - get old bridge state, if it exists + * @state: global atomic state object + * @bridge: bridge to grab + * + * This function returns the old bridge state for the given bridge, or NULL if + * the bridge is not part of the global atomic state. + */ +struct drm_bridge_state * +drm_atomic_get_old_bridge_state(struct drm_atomic_state *state, + struct drm_bridge *bridge) +{ + struct drm_private_state *obj_state; + + obj_state = drm_atomic_get_old_private_obj_state(state, &bridge->base); + if (!obj_state) + return NULL; + + return drm_priv_to_bridge_state(obj_state); +} +EXPORT_SYMBOL(drm_atomic_get_old_bridge_state); + +/** + * drm_atomic_get_new_bridge_state - get new bridge state, if it exists + * @state: global atomic state object + * @bridge: bridge to grab + * + * This function returns the new bridge state for the given bridge, or NULL if + * the bridge is not part of the global atomic state. + */ +struct drm_bridge_state * +drm_atomic_get_new_bridge_state(struct drm_atomic_state *state, + struct drm_bridge *bridge) +{ + struct drm_private_state *obj_state; + + obj_state = drm_atomic_get_new_private_obj_state(state, &bridge->base); + if (!obj_state) + return NULL; + + return drm_priv_to_bridge_state(obj_state); +} +EXPORT_SYMBOL(drm_atomic_get_new_bridge_state); + +/** + * drm_atomic_add_encoder_bridges - add bridges attached to an encoder + * @state: atomic state + * @encoder: DRM encoder + * + * This function adds all bridges attached to @encoder. This is needed to add + * bridge states to @state and make them available when + * &bridge_funcs.atomic_{check,pre_enable,enable,disable_post_disable}() are + * called + * + * Returns: + * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK + * then the w/w mutex code has detected a deadlock and the entire atomic + * sequence must be restarted. All other errors are fatal. + */ +int +drm_atomic_add_encoder_bridges(struct drm_atomic_state *state, + struct drm_encoder *encoder) +{ + struct drm_bridge_state *bridge_state; + struct drm_bridge *bridge; + + if (!encoder) + return 0; + + DRM_DEBUG_ATOMIC("Adding all bridges for [encoder:%d:%s] to %p\n", + encoder->base.id, encoder->name, state); + + drm_for_each_bridge_in_chain(encoder, bridge) { + /* Skip bridges that don't implement the atomic state hooks. */ + if (!bridge->funcs->atomic_reset) + continue; + + bridge_state = drm_atomic_get_bridge_state(state, bridge); + if (IS_ERR(bridge_state)) + return PTR_ERR(bridge_state); + } + + return 0; +} +EXPORT_SYMBOL(drm_atomic_add_encoder_bridges); + /** * drm_atomic_add_affected_connectors - add connectors for CRTC * @state: atomic state diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 4511c2e07bb9..ad8eae98d9e8 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -730,6 +730,26 @@ drm_atomic_helper_check_modeset(struct drm_device *dev, return ret; } + /* + * Iterate over all connectors again, and add all affected bridges to + * the state. + */ + for_each_oldnew_connector_in_state(state, connector, + old_connector_state, + new_connector_state, i) { + struct drm_encoder *encoder; + + encoder = old_connector_state->best_encoder; + ret = drm_atomic_add_encoder_bridges(state, encoder); + if (ret) + return ret; + + encoder = new_connector_state->best_encoder; + ret = drm_atomic_add_encoder_bridges(state, encoder); + if (ret) + return ret; + } + ret = mode_valid(state); if (ret) return ret; diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c index 7cf3cf936547..dcd0592aa48c 100644 --- a/drivers/gpu/drm/drm_atomic_state_helper.c +++ b/drivers/gpu/drm/drm_atomic_state_helper.c @@ -26,6 +26,7 @@ #include #include +#include #include #include #include @@ -551,3 +552,133 @@ void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj memcpy(state, obj->state, sizeof(*state)); } EXPORT_SYMBOL(__drm_atomic_helper_private_obj_duplicate_state); + +/** + * __drm_atomic_helper_bridge_duplicate_state() - Copy atomic bridge state + * @bridge: bridge object + * @state: atomic bridge state + * + * Copies atomic state from a bridge's current state and resets inferred values. + * This is useful for drivers that subclass the bridge state. + */ +void __drm_atomic_helper_bridge_duplicate_state(struct drm_bridge *bridge, + struct drm_bridge_state *state) +{ + __drm_atomic_helper_private_obj_duplicate_state(&bridge->base, + &state->base); + state->bridge = bridge; +} +EXPORT_SYMBOL(__drm_atomic_helper_bridge_duplicate_state); + +/** + * drm_atomic_helper_bridge_destroy_state() - Duplicate a bridge state object + * @bridge: bridge object + * + * Allocates a new bridge state and initializes it with the current bridge + * state values. This helper is meant to be used as a bridge + * &drm_plane_funcs.duplicate_state hook for bridges that don't subclass + * the bridge state. + */ +struct drm_bridge_state * +drm_atomic_helper_bridge_duplicate_state(struct drm_bridge *bridge) +{ + struct drm_bridge_state *new; + + if (WARN_ON(!bridge->base.state)) + return NULL; + + new = kzalloc(sizeof(*new), GFP_KERNEL); + if (new) + __drm_atomic_helper_bridge_duplicate_state(bridge, new); + + return new; +} +EXPORT_SYMBOL(drm_atomic_helper_bridge_duplicate_state); + +/** + * drm_atomic_helper_bridge_destroy_state() - Destroy a bridge state object + * @bridge: the bridge this state refers to + * @state: bridge state to destroy + * + * Destroys a bridge state previously created by + * &drm_atomic_helper_bridge_reset() or + * &drm_atomic_helper_bridge_duplicate_state(). This helper is meant to be + * used as a bridge &drm_plane_funcs.reset hook for bridges that don't subclass + * the bridge state. + */ +void drm_atomic_helper_bridge_destroy_state(struct drm_bridge *bridge, + struct drm_bridge_state *state) +{ + kfree(state); +} +EXPORT_SYMBOL(drm_atomic_helper_bridge_destroy_state); + +static struct drm_private_state * +drm_bridge_atomic_duplicate_priv_state(struct drm_private_obj *obj) +{ + struct drm_bridge *bridge = drm_priv_to_bridge(obj); + struct drm_bridge_state *state; + + state = bridge->funcs->atomic_duplicate_state(bridge); + return state ? &state->base : NULL; +} + +static void +drm_bridge_atomic_destroy_priv_state(struct drm_private_obj *obj, + struct drm_private_state *s) +{ + struct drm_bridge_state *state = drm_priv_to_bridge_state(s); + struct drm_bridge *bridge = drm_priv_to_bridge(obj); + + bridge->funcs->atomic_destroy_state(bridge, state); +} + +static const struct drm_private_state_funcs drm_bridge_priv_state_funcs = { + .atomic_duplicate_state = drm_bridge_atomic_duplicate_priv_state, + .atomic_destroy_state = drm_bridge_atomic_destroy_priv_state, +}; + +/** + * __drm_atomic_helper_bridge_reset() - Initialize a bridge state to its + * default + * @bridge: the bridge this state refers to + * @state: bridge state to initialize + * + * Initializes the bridge state to default values. This is meant to be called + * by the bridge &drm_plane_funcs.reset hook for bridges that subclass the + * bridge state. + */ +void __drm_atomic_helper_bridge_reset(struct drm_bridge *bridge, + struct drm_bridge_state *state) +{ + memset(state, 0, sizeof(*state)); + state->bridge = bridge; + drm_atomic_private_obj_init(bridge->dev, &bridge->base, + &state->base, + &drm_bridge_priv_state_funcs); +} +EXPORT_SYMBOL(__drm_atomic_helper_bridge_reset); + +/** + * drm_atomic_helper_bridge_reset() - Allocate and initialize a bridge state + * to its default + * @bridge: the bridge this state refers to + * @state: bridge state to initialize + * + * Allocates the bridge state and initializes it to default values. This helper + * is meant to be used as a bridge &drm_plane_funcs.reset hook for bridges that + * don't subclass the bridge state. + */ +struct drm_bridge_state * +drm_atomic_helper_bridge_reset(struct drm_bridge *bridge) +{ + struct drm_bridge_state *bridge_state; + + bridge_state = kzalloc(sizeof(*bridge_state), GFP_KERNEL); + if (!bridge_state) + return ERR_PTR(-ENOMEM); + + __drm_atomic_helper_bridge_reset(bridge, bridge_state); + return bridge_state; +} +EXPORT_SYMBOL(drm_atomic_helper_bridge_reset); diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index c2cf0c90fa26..31d658f7312f 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -25,6 +25,7 @@ #include #include +#include #include #include @@ -135,15 +136,31 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge, if (bridge->funcs->attach) { ret = bridge->funcs->attach(bridge); - if (ret < 0) { - list_del(&bridge->chain_node); - bridge->dev = NULL; - bridge->encoder = NULL; - return ret; + if (ret < 0) + goto err_reset_bridge; + } + + if (bridge->funcs->atomic_reset) { + struct drm_bridge_state *state; + + state = bridge->funcs->atomic_reset(bridge); + if (IS_ERR(state)) { + ret = PTR_ERR(state); + goto err_detach_bridge; } } return 0; + +err_detach_bridge: + if (bridge->funcs->detach) + bridge->funcs->detach(bridge); + +err_reset_bridge: + bridge->dev = NULL; + bridge->encoder = NULL; + list_del(&bridge->chain_node); + return ret; } EXPORT_SYMBOL(drm_bridge_attach); @@ -155,6 +172,8 @@ void drm_bridge_detach(struct drm_bridge *bridge) if (WARN_ON(!bridge->dev)) return; + drm_atomic_private_obj_fini(&bridge->base); + if (bridge->funcs->detach) bridge->funcs->detach(bridge); diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index 951dfb15c27b..82a888769b3d 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -669,6 +669,9 @@ __drm_atomic_get_current_plane_state(struct drm_atomic_state *state, return plane->state; } +int __must_check +drm_atomic_add_encoder_bridges(struct drm_atomic_state *state, + struct drm_encoder *encoder); int __must_check drm_atomic_add_affected_connectors(struct drm_atomic_state *state, struct drm_crtc *crtc); @@ -992,4 +995,35 @@ drm_atomic_crtc_effectively_active(const struct drm_crtc_state *state) return state->active || state->self_refresh_active; } +/** + * struct drm_bridge_state - Atomic bridge state object + */ +struct drm_bridge_state { + /** + * @base: inherit from &drm_private_state + */ + struct drm_private_state base; + + /** + * @bridge: the bridge this state refers to + */ + struct drm_bridge *bridge; +}; + +static inline struct drm_bridge_state * +drm_priv_to_bridge_state(struct drm_private_state *priv) +{ + return container_of(priv, struct drm_bridge_state, base); +} + +struct drm_bridge_state * +drm_atomic_get_bridge_state(struct drm_atomic_state *state, + struct drm_bridge *bridge); +struct drm_bridge_state * +drm_atomic_get_old_bridge_state(struct drm_atomic_state *state, + struct drm_bridge *bridge); +struct drm_bridge_state * +drm_atomic_get_new_bridge_state(struct drm_atomic_state *state, + struct drm_bridge *bridge); + #endif /* DRM_ATOMIC_H_ */ diff --git a/include/drm/drm_atomic_state_helper.h b/include/drm/drm_atomic_state_helper.h index 8171dea4cc22..3f8f1d627f7c 100644 --- a/include/drm/drm_atomic_state_helper.h +++ b/include/drm/drm_atomic_state_helper.h @@ -26,6 +26,8 @@ #include +struct drm_bridge; +struct drm_bridge_state; struct drm_crtc; struct drm_crtc_state; struct drm_plane; @@ -80,3 +82,14 @@ void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector, struct drm_connector_state *state); void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj, struct drm_private_state *state); + +void __drm_atomic_helper_bridge_duplicate_state(struct drm_bridge *bridge, + struct drm_bridge_state *state); +struct drm_bridge_state * +drm_atomic_helper_bridge_duplicate_state(struct drm_bridge *bridge); +void drm_atomic_helper_bridge_destroy_state(struct drm_bridge *bridge, + struct drm_bridge_state *state); +void __drm_atomic_helper_bridge_reset(struct drm_bridge *bridge, + struct drm_bridge_state *state); +struct drm_bridge_state * +drm_atomic_helper_bridge_reset(struct drm_bridge *bridge); diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 694e153a7531..3ec37f6d4dff 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -25,6 +25,8 @@ #include #include + +#include #include #include #include @@ -338,6 +340,49 @@ struct drm_bridge_funcs { */ void (*atomic_post_disable)(struct drm_bridge *bridge, struct drm_atomic_state *old_state); + + /** + * @atomic_duplicate_state: + * + * Duplicate the current bridge state object (which is guaranteed to be + * non-NULL). + * + * The atomic_duplicate_state() is optional. When not implemented the + * core allocates a drm_bridge_state object and calls + * &__drm_atomic_helper_bridge_duplicate_state() to initialize it. + * + * RETURNS: + * A valid drm_bridge_state object or NULL if the allocation fails. + */ + struct drm_bridge_state *(*atomic_duplicate_state)(struct drm_bridge *bridge); + + /** + * @atomic_destroy_state: + * + * Destroy a bridge state object previously allocated by + * &drm_bridge_funcs.atomic_duplicate_state(). + * + * The atomic_destroy_state hook is optional. When not implemented the + * core calls kfree() on the state. + */ + void (*atomic_destroy_state)(struct drm_bridge *bridge, + struct drm_bridge_state *state); + + /** + * @atomic_reset: + * + * Reset the bridge to a predefined state (or retrieve its current + * state) and return a &drm_bridge_state object matching this state. + * This function is called at attach time. + * + * The atomic_reset hook is optional. When not implemented the core + * allocates a new state and calls &__drm_atomic_helper_bridge_reset(). + * + * RETURNS: + * A valid drm_bridge_state object in case of success, an ERR_PTR() + * giving the reason of the failure otherwise. + */ + struct drm_bridge_state *(*atomic_reset)(struct drm_bridge *bridge); }; /** @@ -380,6 +425,8 @@ struct drm_bridge_timings { * struct drm_bridge - central DRM bridge control structure */ struct drm_bridge { + /** @base: inherit from &drm_private_object */ + struct drm_private_obj base; /** @dev: DRM device this bridge belongs to */ struct drm_device *dev; /** @encoder: encoder to which this bridge is connected */ @@ -404,6 +451,12 @@ struct drm_bridge { void *driver_private; }; +static inline struct drm_bridge * +drm_priv_to_bridge(struct drm_private_obj *priv) +{ + return container_of(priv, struct drm_bridge, base); +} + void drm_bridge_add(struct drm_bridge *bridge); void drm_bridge_remove(struct drm_bridge *bridge); struct drm_bridge *of_drm_find_bridge(struct device_node *np); From patchwork Thu Jan 23 09:53:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 205429 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95FC6C33CBA for ; Thu, 23 Jan 2020 09:53:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6975524125 for ; Thu, 23 Jan 2020 09:53:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726227AbgAWJxl (ORCPT ); Thu, 23 Jan 2020 04:53:41 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:43932 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728827AbgAWJxl (ORCPT ); Thu, 23 Jan 2020 04:53:41 -0500 Received: from localhost.localdomain (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: bbrezillon) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 70F26293CFD; Thu, 23 Jan 2020 09:53:39 +0000 (GMT) From: Boris Brezillon To: dri-devel@lists.freedesktop.org Cc: Lucas Stach , Chris Healy , Andrey Smirnov , Nikita Yushchenko , kernel@collabora.com, Daniel Vetter , Thierry Reding , Sam Ravnborg , Philipp Zabel , Andrzej Hajda , Neil Armstrong , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, intel-gfx-trybot@lists.freedesktop.org, Boris Brezillon Subject: [PATCH v8 04/12] drm/bridge: analogix: Plug atomic state hooks to the default implementation Date: Thu, 23 Jan 2020 10:53:25 +0100 Message-Id: <20200123095333.2085810-5-boris.brezillon@collabora.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200123095333.2085810-1-boris.brezillon@collabora.com> References: <20200123095333.2085810-1-boris.brezillon@collabora.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This is needed to pass a bridge state to all atomic hooks, if we don't do that, the core can't duplicate/create bridge states. Signed-off-by: Boris Brezillon --- Changes in v7: * New patch --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 6fab71985cd4..dfb59a5fefea 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1570,6 +1570,9 @@ static void analogix_dp_bridge_mode_set(struct drm_bridge *bridge, } static const struct drm_bridge_funcs analogix_dp_bridge_funcs = { + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_reset = drm_atomic_helper_bridge_reset, .atomic_pre_enable = analogix_dp_bridge_atomic_pre_enable, .atomic_enable = analogix_dp_bridge_atomic_enable, .atomic_disable = analogix_dp_bridge_atomic_disable, From patchwork Thu Jan 23 09:53:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 205424 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4CD0C33CB6 for ; Thu, 23 Jan 2020 09:53:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BC52B2253D for ; Thu, 23 Jan 2020 09:53:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726743AbgAWJxn (ORCPT ); Thu, 23 Jan 2020 04:53:43 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:43954 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727278AbgAWJxm (ORCPT ); Thu, 23 Jan 2020 04:53:42 -0500 Received: from localhost.localdomain (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: bbrezillon) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 0071D293D07; Thu, 23 Jan 2020 09:53:39 +0000 (GMT) From: Boris Brezillon To: dri-devel@lists.freedesktop.org Cc: Lucas Stach , Chris Healy , Andrey Smirnov , Nikita Yushchenko , kernel@collabora.com, Daniel Vetter , Thierry Reding , Sam Ravnborg , Philipp Zabel , Andrzej Hajda , Neil Armstrong , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, intel-gfx-trybot@lists.freedesktop.org, Boris Brezillon , Laurent Pinchart Subject: [PATCH v8 05/12] drm/bridge: Add an ->atomic_check() hook Date: Thu, 23 Jan 2020 10:53:26 +0100 Message-Id: <20200123095333.2085810-6-boris.brezillon@collabora.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200123095333.2085810-1-boris.brezillon@collabora.com> References: <20200123095333.2085810-1-boris.brezillon@collabora.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org So that bridge drivers have a way to check/reject an atomic operation. The drm_atomic_bridge_chain_check() (which is just a wrapper around the ->atomic_check() hook) is called in place of drm_bridge_chain_mode_fixup() (when ->atomic_check() is not implemented, the core falls back on ->mode_fixup(), so the behavior should stay the same for existing bridge drivers). Signed-off-by: Boris Brezillon Reviewed-by: Neil Armstrong Reviewed-by: Laurent Pinchart Signed-off-by: Neil Armstrong Reviewed by: Jernej Skrabec Tested-by: Jonas Karlman --- Changes in v7: * Fix a NULL pointer dereference --- drivers/gpu/drm/drm_atomic_helper.c | 12 +++--- drivers/gpu/drm/drm_bridge.c | 66 +++++++++++++++++++++++++++++ include/drm/drm_bridge.h | 29 ++++++++++++- 3 files changed, 100 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index ad8eae98d9e8..afe14f72a824 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -437,12 +437,12 @@ mode_fixup(struct drm_atomic_state *state) funcs = encoder->helper_private; bridge = drm_bridge_chain_get_first_bridge(encoder); - ret = drm_bridge_chain_mode_fixup(bridge, - &new_crtc_state->mode, - &new_crtc_state->adjusted_mode); - if (!ret) { - DRM_DEBUG_ATOMIC("Bridge fixup failed\n"); - return -EINVAL; + ret = drm_atomic_bridge_chain_check(bridge, + new_crtc_state, + new_conn_state); + if (ret) { + DRM_DEBUG_ATOMIC("Bridge atomic check failed\n"); + return ret; } if (funcs && funcs->atomic_check) { diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 18d2c42491ca..dd3a2a9f87d3 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -572,6 +572,72 @@ void drm_atomic_bridge_chain_enable(struct drm_bridge *bridge, } EXPORT_SYMBOL(drm_atomic_bridge_chain_enable); +static int drm_atomic_bridge_check(struct drm_bridge *bridge, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + if (bridge->funcs->atomic_check) { + struct drm_bridge_state *bridge_state; + int ret; + + bridge_state = drm_atomic_get_new_bridge_state(crtc_state->state, + bridge); + if (WARN_ON(!bridge_state)) + return -EINVAL; + + ret = bridge->funcs->atomic_check(bridge, bridge_state, + crtc_state, conn_state); + if (ret) + return ret; + } else if (bridge->funcs->mode_fixup) { + if (!bridge->funcs->mode_fixup(bridge, &crtc_state->mode, + &crtc_state->adjusted_mode)) + return -EINVAL; + } + + return 0; +} + +/** + * drm_atomic_bridge_chain_check() - Do an atomic check on the bridge chain + * @bridge: bridge control structure + * @crtc_state: new CRTC state + * @conn_state: new connector state + * + * Calls &drm_bridge_funcs.atomic_check() (falls back on + * &drm_bridge_funcs.mode_fixup()) op for all the bridges in the encoder chain, + * starting from the last bridge to the first. These are called before calling + * &drm_encoder_helper_funcs.atomic_check() + * + * RETURNS: + * 0 on success, a negative error code on failure + */ +int drm_atomic_bridge_chain_check(struct drm_bridge *bridge, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct drm_encoder *encoder; + struct drm_bridge *iter; + + if (!bridge) + return 0; + + encoder = bridge->encoder; + list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) { + int ret; + + ret = drm_atomic_bridge_check(iter, crtc_state, conn_state); + if (ret) + return ret; + + if (iter == bridge) + break; + } + + return 0; +} +EXPORT_SYMBOL(drm_atomic_bridge_chain_check); + #ifdef CONFIG_OF /** * of_drm_find_bridge - find the bridge corresponding to the device node in diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index c971ba143e3e..04815ab948dd 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -111,7 +111,9 @@ struct drm_bridge_funcs { * this function passes all other callbacks must succeed for this * configuration. * - * The @mode_fixup callback is optional. + * The mode_fixup callback is optional. &drm_bridge_funcs.mode_fixup() + * is not called when &drm_bridge_funcs.atomic_check() is implemented, + * so only one of them should be provided. * * NOTE: * @@ -368,6 +370,28 @@ struct drm_bridge_funcs { void (*atomic_destroy_state)(struct drm_bridge *bridge, struct drm_bridge_state *state); + /** + * @atomic_check: + * + * This method is responsible for checking bridge state correctness. + * It can also check the state of the surrounding components in chain + * to make sure the whole pipeline can work properly. + * + * &drm_bridge_funcs.atomic_check() hooks are called in reverse + * order (from the last to the first bridge). + * + * This method is optional. &drm_bridge_funcs.mode_fixup() is not + * called when &drm_bridge_funcs.atomic_check() is implemented, so only + * one of them should be provided. + * + * RETURNS: + * zero if the check passed, a negative error code otherwise. + */ + int (*atomic_check)(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state); + /** * @atomic_reset: * @@ -535,6 +559,9 @@ void drm_bridge_chain_mode_set(struct drm_bridge *bridge, void drm_bridge_chain_pre_enable(struct drm_bridge *bridge); void drm_bridge_chain_enable(struct drm_bridge *bridge); +int drm_atomic_bridge_chain_check(struct drm_bridge *bridge, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state); void drm_atomic_bridge_chain_disable(struct drm_bridge *bridge, struct drm_atomic_state *state); void drm_atomic_bridge_chain_post_disable(struct drm_bridge *bridge, From patchwork Thu Jan 23 09:53:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 205426 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7061AC35240 for ; Thu, 23 Jan 2020 09:53:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 50AD622522 for ; Thu, 23 Jan 2020 09:53:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727278AbgAWJxp (ORCPT ); Thu, 23 Jan 2020 04:53:45 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:43992 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728911AbgAWJxp (ORCPT ); Thu, 23 Jan 2020 04:53:45 -0500 Received: from localhost.localdomain (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: bbrezillon) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id 3FF0F293D25; Thu, 23 Jan 2020 09:53:41 +0000 (GMT) From: Boris Brezillon To: dri-devel@lists.freedesktop.org Cc: Lucas Stach , Chris Healy , Andrey Smirnov , Nikita Yushchenko , kernel@collabora.com, Daniel Vetter , Thierry Reding , Sam Ravnborg , Philipp Zabel , Andrzej Hajda , Neil Armstrong , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, intel-gfx-trybot@lists.freedesktop.org, Boris Brezillon Subject: [PATCH v8 07/12] drm/imx: pd: Use bus format/flags provided by the bridge when available Date: Thu, 23 Jan 2020 10:53:28 +0100 Message-Id: <20200123095333.2085810-8-boris.brezillon@collabora.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200123095333.2085810-1-boris.brezillon@collabora.com> References: <20200123095333.2085810-1-boris.brezillon@collabora.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Now that bridges can expose the bus format/flags they expect, we can use those instead of the relying on the display_info provided by the connector (which is only valid if the encoder is directly connected to bridge element driving the panel/display). We also explicitly expose the bus formats supported by our encoder by filling encoder->output_bus_caps with proper info. Signed-off-by: Boris Brezillon --- Changes in v7: * Add an imx_pd_format_supported() helper (suggested by Philipp) * Simplify imx_pd_bridge_atomic_get_output_bus_fmts() (suggested by Philipp) * Simplify imx_pd_bridge_atomic_get_input_bus_fmts() * Explicitly set the duplicate/destro_state() and reset() hooks Changes in v3 (all suggested by Philipp): * Adjust to match core changes * Propagate output format to input format * Pick a default value when output_fmt = _FIXED * Add missing BGR888 and GBR888 fmts to imx_pd_bus_fmts[] Changes in v2: * Adjust things to match the new bus-format negotiation infra --- drivers/gpu/drm/imx/parallel-display.c | 176 +++++++++++++++++++++---- 1 file changed, 151 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index 3dca424059f7..031579aa7fc2 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -24,6 +24,7 @@ struct imx_parallel_display { struct drm_connector connector; struct drm_encoder encoder; + struct drm_bridge bridge; struct device *dev; void *edid; int edid_len; @@ -31,7 +32,7 @@ struct imx_parallel_display { u32 bus_flags; struct drm_display_mode mode; struct drm_panel *panel; - struct drm_bridge *bridge; + struct drm_bridge *next_bridge; }; static inline struct imx_parallel_display *con_to_imxpd(struct drm_connector *c) @@ -44,6 +45,11 @@ static inline struct imx_parallel_display *enc_to_imxpd(struct drm_encoder *e) return container_of(e, struct imx_parallel_display, encoder); } +static inline struct imx_parallel_display *bridge_to_imxpd(struct drm_bridge *b) +{ + return container_of(b, struct imx_parallel_display, bridge); +} + static int imx_pd_connector_get_modes(struct drm_connector *connector) { struct imx_parallel_display *imxpd = con_to_imxpd(connector); @@ -89,37 +95,148 @@ static struct drm_encoder *imx_pd_connector_best_encoder( return &imxpd->encoder; } -static void imx_pd_encoder_enable(struct drm_encoder *encoder) +static void imx_pd_bridge_enable(struct drm_bridge *bridge) { - struct imx_parallel_display *imxpd = enc_to_imxpd(encoder); + struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); drm_panel_prepare(imxpd->panel); drm_panel_enable(imxpd->panel); } -static void imx_pd_encoder_disable(struct drm_encoder *encoder) +static void imx_pd_bridge_disable(struct drm_bridge *bridge) { - struct imx_parallel_display *imxpd = enc_to_imxpd(encoder); + struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); drm_panel_disable(imxpd->panel); drm_panel_unprepare(imxpd->panel); } -static int imx_pd_encoder_atomic_check(struct drm_encoder *encoder, - struct drm_crtc_state *crtc_state, - struct drm_connector_state *conn_state) +static const u32 imx_pd_bus_fmts[] = { + MEDIA_BUS_FMT_RGB888_1X24, + MEDIA_BUS_FMT_BGR888_1X24, + MEDIA_BUS_FMT_GBR888_1X24, + MEDIA_BUS_FMT_RGB666_1X18, + MEDIA_BUS_FMT_RGB666_1X24_CPADHI, + MEDIA_BUS_FMT_RGB565_1X16, +}; + +static u32 * +imx_pd_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + unsigned int *num_output_fmts) { - struct imx_crtc_state *imx_crtc_state = to_imx_crtc_state(crtc_state); struct drm_display_info *di = &conn_state->connector->display_info; - struct imx_parallel_display *imxpd = enc_to_imxpd(encoder); + struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); + u32 *output_fmts; - if (!imxpd->bus_format && di->num_bus_formats) { - imx_crtc_state->bus_flags = di->bus_flags; - imx_crtc_state->bus_format = di->bus_formats[0]; - } else { - imx_crtc_state->bus_flags = imxpd->bus_flags; - imx_crtc_state->bus_format = imxpd->bus_format; + if (!imxpd->bus_format && !di->num_bus_formats) { + *num_output_fmts = ARRAY_SIZE(imx_pd_bus_fmts); + return kmemdup(imx_pd_bus_fmts, sizeof(imx_pd_bus_fmts), + GFP_KERNEL); + } + + *num_output_fmts = 1; + output_fmts = kcalloc(*num_output_fmts, sizeof(*output_fmts), + GFP_KERNEL); + if (!output_fmts) + return NULL; + + if (!imxpd->bus_format && di->num_bus_formats) + output_fmts[0] = di->bus_formats[0]; + else + output_fmts[0] = imxpd->bus_format; + + return output_fmts; +} + +static bool imx_pd_format_supported(u32 output_fmt) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(imx_pd_bus_fmts); i++) { + if (imx_pd_bus_fmts[i] == output_fmt) + return true; } + + return false; +} + +static u32 * +imx_pd_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); + u32 *input_fmts; + + /* + * If the next bridge does not support bus format negotiation, let's + * use the static bus format definition (imxpd->bus_format) if it's + * specified, RGB888 when it's not. + */ + if (output_fmt == MEDIA_BUS_FMT_FIXED) + output_fmt = imxpd->bus_format ? : MEDIA_BUS_FMT_RGB888_1X24; + + /* Now make sure the requested output format is supported. */ + if ((imxpd->bus_format && imxpd->bus_format != output_fmt) || + !imx_pd_format_supported(output_fmt)) { + *num_input_fmts = 0; + return NULL; + } + + *num_input_fmts = 1; + input_fmts = kcalloc(*num_input_fmts, sizeof(*input_fmts), + GFP_KERNEL); + if (!input_fmts) + return NULL; + + input_fmts[0] = output_fmt; + return input_fmts; +} + +static int imx_pd_bridge_atomic_check(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct imx_crtc_state *imx_crtc_state = to_imx_crtc_state(crtc_state); + struct drm_display_info *di = &conn_state->connector->display_info; + struct imx_parallel_display *imxpd = bridge_to_imxpd(bridge); + struct drm_bridge_state *next_bridge_state = NULL; + struct drm_bridge *next_bridge; + u32 bus_flags, bus_fmt; + + next_bridge = drm_bridge_get_next_bridge(bridge); + if (next_bridge) + next_bridge_state = drm_atomic_get_new_bridge_state(crtc_state->state, + next_bridge); + + if (next_bridge_state) + bus_flags = next_bridge_state->input_bus_cfg.flags; + else if (!imxpd->bus_format && di->num_bus_formats) + bus_flags = di->bus_flags; + else + bus_flags = imxpd->bus_flags; + + bus_fmt = bridge_state->input_bus_cfg.format; + if (!imx_pd_format_supported(bus_fmt)) + return -EINVAL; + + if (bus_flags & + ~(DRM_BUS_FLAG_DE_LOW | DRM_BUS_FLAG_DE_HIGH | + DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE | + DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE)) + return -EINVAL; + + bridge_state->output_bus_cfg.flags = bus_flags; + bridge_state->input_bus_cfg.flags = bus_flags; + imx_crtc_state->bus_flags = bus_flags; + imx_crtc_state->bus_format = bridge_state->input_bus_cfg.format; imx_crtc_state->di_hsync_pin = 2; imx_crtc_state->di_vsync_pin = 3; @@ -143,10 +260,15 @@ static const struct drm_encoder_funcs imx_pd_encoder_funcs = { .destroy = imx_drm_encoder_destroy, }; -static const struct drm_encoder_helper_funcs imx_pd_encoder_helper_funcs = { - .enable = imx_pd_encoder_enable, - .disable = imx_pd_encoder_disable, - .atomic_check = imx_pd_encoder_atomic_check, +static const struct drm_bridge_funcs imx_pd_bridge_funcs = { + .enable = imx_pd_bridge_enable, + .disable = imx_pd_bridge_disable, + .atomic_reset = drm_atomic_helper_bridge_reset, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_check = imx_pd_bridge_atomic_check, + .atomic_get_input_bus_fmts = imx_pd_bridge_atomic_get_input_bus_fmts, + .atomic_get_output_bus_fmts = imx_pd_bridge_atomic_get_output_bus_fmts, }; static int imx_pd_register(struct drm_device *drm, @@ -166,11 +288,13 @@ static int imx_pd_register(struct drm_device *drm, */ imxpd->connector.dpms = DRM_MODE_DPMS_OFF; - drm_encoder_helper_add(encoder, &imx_pd_encoder_helper_funcs); drm_encoder_init(drm, encoder, &imx_pd_encoder_funcs, DRM_MODE_ENCODER_NONE, NULL); - if (!imxpd->bridge) { + imxpd->bridge.funcs = &imx_pd_bridge_funcs; + drm_bridge_attach(encoder, &imxpd->bridge, NULL); + + if (!imxpd->next_bridge) { drm_connector_helper_add(&imxpd->connector, &imx_pd_connector_helper_funcs); drm_connector_init(drm, &imxpd->connector, @@ -181,8 +305,9 @@ static int imx_pd_register(struct drm_device *drm, if (imxpd->panel) drm_panel_attach(imxpd->panel, &imxpd->connector); - if (imxpd->bridge) { - ret = drm_bridge_attach(encoder, imxpd->bridge, NULL); + if (imxpd->next_bridge) { + ret = drm_bridge_attach(encoder, imxpd->next_bridge, + &imxpd->bridge); if (ret < 0) { dev_err(imxpd->dev, "failed to attach bridge: %d\n", ret); @@ -227,7 +352,8 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data) imxpd->bus_format = bus_format; /* port@1 is the output port */ - ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, &imxpd->bridge); + ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, + &imxpd->next_bridge); if (ret && ret != -ENODEV) return ret; From patchwork Thu Jan 23 09:53:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 205427 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23D8DC35242 for ; Thu, 23 Jan 2020 09:53:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 04AC32253D for ; Thu, 23 Jan 2020 09:53:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728925AbgAWJxp (ORCPT ); Thu, 23 Jan 2020 04:53:45 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:44082 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727278AbgAWJxp (ORCPT ); Thu, 23 Jan 2020 04:53:45 -0500 Received: from localhost.localdomain (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: bbrezillon) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id DF99E293142; Thu, 23 Jan 2020 09:53:42 +0000 (GMT) From: Boris Brezillon To: dri-devel@lists.freedesktop.org Cc: Lucas Stach , Chris Healy , Andrey Smirnov , Nikita Yushchenko , kernel@collabora.com, Daniel Vetter , Thierry Reding , Sam Ravnborg , Philipp Zabel , Andrzej Hajda , Neil Armstrong , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, intel-gfx-trybot@lists.freedesktop.org, Boris Brezillon Subject: [PATCH v8 10/12] drm/bridge: panel: Propage bus format/flags Date: Thu, 23 Jan 2020 10:53:31 +0100 Message-Id: <20200123095333.2085810-11-boris.brezillon@collabora.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200123095333.2085810-1-boris.brezillon@collabora.com> References: <20200123095333.2085810-1-boris.brezillon@collabora.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org So that the previous bridge element in the chain knows which input format the panel bridge expects. Signed-off-by: Boris Brezillon --- Changes in v7: * Set atomic state hooks explicitly Changes in v3: * Adjust things to match the new bus-format negotiation approach * Use drm_atomic_helper_bridge_propagate_bus_fmt * Don't implement ->atomic_check() (the core now takes care of bus flags propagation) Changes in v2: * Adjust things to match the new bus-format negotiation approach --- drivers/gpu/drm/bridge/panel.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c index f66777e24968..dcc72bd7df30 100644 --- a/drivers/gpu/drm/bridge/panel.c +++ b/drivers/gpu/drm/bridge/panel.c @@ -127,6 +127,10 @@ static const struct drm_bridge_funcs panel_bridge_bridge_funcs = { .enable = panel_bridge_enable, .disable = panel_bridge_disable, .post_disable = panel_bridge_post_disable, + .atomic_reset = drm_atomic_helper_bridge_reset, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_get_input_bus_fmts = drm_atomic_helper_bridge_propagate_bus_fmt, }; /** From patchwork Thu Jan 23 09:53:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 205425 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 305EBC35244 for ; Thu, 23 Jan 2020 09:53:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0B6CE22522 for ; Thu, 23 Jan 2020 09:53:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728913AbgAWJxq (ORCPT ); Thu, 23 Jan 2020 04:53:46 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:43954 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728799AbgAWJxq (ORCPT ); Thu, 23 Jan 2020 04:53:46 -0500 Received: from localhost.localdomain (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: bbrezillon) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id A339C293D85; Thu, 23 Jan 2020 09:53:44 +0000 (GMT) From: Boris Brezillon To: dri-devel@lists.freedesktop.org Cc: Lucas Stach , Chris Healy , Andrey Smirnov , Nikita Yushchenko , kernel@collabora.com, Daniel Vetter , Thierry Reding , Sam Ravnborg , Philipp Zabel , Andrzej Hajda , Neil Armstrong , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, intel-gfx-trybot@lists.freedesktop.org, Boris Brezillon Subject: [PATCH v8 12/12] ARM: dts: imx: imx51-zii-rdu1: Fix the display pipeline definition Date: Thu, 23 Jan 2020 10:53:33 +0100 Message-Id: <20200123095333.2085810-13-boris.brezillon@collabora.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200123095333.2085810-1-boris.brezillon@collabora.com> References: <20200123095333.2085810-1-boris.brezillon@collabora.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The current definition does not represent the exact display pipeline we have on the board: the LVDS panel is actually connected through a parallel -> LVDS bridge. Let's fix that so the driver can select the proper bus format on the CRTC end. Signed-off-by: Boris Brezillon --- Changes in v7: * None --- arch/arm/boot/dts/imx51-zii-rdu1.dts | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx51-zii-rdu1.dts b/arch/arm/boot/dts/imx51-zii-rdu1.dts index 3596060f52e7..3fb84ea7f993 100644 --- a/arch/arm/boot/dts/imx51-zii-rdu1.dts +++ b/arch/arm/boot/dts/imx51-zii-rdu1.dts @@ -95,6 +95,28 @@ port@1 { reg = <1>; display_out: endpoint { + remote-endpoint = <&lvds_encoder_in>; + }; + }; + }; + + lvds-encoder { + compatible = "lvds-encoder"; + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + bus-width = <24>; + lvds_encoder_in: endpoint { + remote-endpoint = <&display_out>; + }; + }; + + port@1 { + reg = <1>; + data-mapping = "jeida-24"; + lvds_encoder_out: endpoint { remote-endpoint = <&panel_in>; }; }; @@ -110,7 +132,7 @@ panel { port { panel_in: endpoint { - remote-endpoint = <&display_out>; + remote-endpoint = <&lvds_encoder_out>; }; }; };