From patchwork Fri May 29 17:56:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Noralf_Tr=C3=B8nnes?= X-Patchwork-Id: 214973 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 32C82C433E1 for ; Fri, 29 May 2020 17:57:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1EFF92075A for ; Fri, 29 May 2020 17:57:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728189AbgE2R5I (ORCPT ); Fri, 29 May 2020 13:57:08 -0400 Received: from asav22.altibox.net ([109.247.116.9]:39060 "EHLO asav22.altibox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728178AbgE2R5H (ORCPT ); Fri, 29 May 2020 13:57:07 -0400 Received: from localhost.localdomain (unknown [81.166.168.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: noralf.tronnes@ebnett.no) by asav22.altibox.net (Postfix) with ESMTPSA id 973FA200CE; Fri, 29 May 2020 19:57:03 +0200 (CEST) From: =?utf-8?q?Noralf_Tr=C3=B8nnes?= To: dri-devel@lists.freedesktop.org, balbi@kernel.org Cc: linux-usb@vger.kernel.org, sam@ravnborg.org, =?utf-8?q?Noralf_Tr=C3=B8?= =?utf-8?q?nnes?= Subject: [PATCH v3 3/6] drm/client: Add a way to set modeset, properties and rotation Date: Fri, 29 May 2020 19:56:40 +0200 Message-Id: <20200529175643.46094-4-noralf@tronnes.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200529175643.46094-1-noralf@tronnes.org> References: <20200529175643.46094-1-noralf@tronnes.org> MIME-Version: 1.0 X-CMAE-Score: 0 X-CMAE-Analysis: v=2.3 cv=LvK8NEVc c=1 sm=1 tr=0 a=OYZzhG0JTxDrWp/F2OJbnw==:117 a=OYZzhG0JTxDrWp/F2OJbnw==:17 a=IkcTkHD0fZMA:10 a=M51BFTxLslgA:10 a=SJz97ENfAAAA:8 a=M-TpJSvIHFVSw-O4hR8A:9 a=Se0h0s-PsaGxwzjN:21 a=KLOMj-mo1MvUhMRw:21 a=QEXdDO2ut3YA:10 a=vFet0B0WnEQeilDPIY6i:22 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This adds functions for clients that need more control over the configuration than what's setup by drm_client_modeset_probe(). Connector, fb and display mode can be set using drm_client_modeset_set(). Plane rotation can be set using drm_client_modeset_set_rotation() and other properties using drm_client_modeset_set_property(). Property setting is only implemented for atomic drivers. v2: - drm_client_modeset_set(): Remove undocumented functionality to clear modesets. A disable function takes care of that need now. - drm_client_modeset_set_property(): Return -EOPNOTSUPP if driver is not atomic (Sam) Signed-off-by: Noralf Trønnes --- drivers/gpu/drm/drm_client_modeset.c | 137 +++++++++++++++++++++++++++ include/drm/drm_client.h | 38 +++++++- 2 files changed, 174 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c index 977bcd063520..9eee9567b9aa 100644 --- a/drivers/gpu/drm/drm_client_modeset.c +++ b/drivers/gpu/drm/drm_client_modeset.c @@ -83,6 +83,10 @@ static void drm_client_modeset_release(struct drm_client_dev *client) } modeset->num_connectors = 0; } + + kfree(client->properties); + client->properties = NULL; + client->num_properties = 0; } void drm_client_modeset_free(struct drm_client_dev *client) @@ -879,6 +883,130 @@ int drm_client_modeset_probe(struct drm_client_dev *client, unsigned int width, } EXPORT_SYMBOL(drm_client_modeset_probe); +/** + * drm_client_modeset_set() - Set modeset configuration + * @client: DRM client + * @connector: Connector + * @mode: Display mode + * @fb: Framebuffer + * + * This function releases any current modeset info, including properties, and + * sets the new modeset in the client's modeset array. + * + * Returns: + * Zero on success or negative error code on failure. + */ +int drm_client_modeset_set(struct drm_client_dev *client, struct drm_connector *connector, + struct drm_display_mode *mode, struct drm_framebuffer *fb) +{ + struct drm_mode_set *modeset; + int ret = -ENOENT; + + mutex_lock(&client->modeset_mutex); + + drm_client_modeset_release(client); + + drm_client_for_each_modeset(modeset, client) { + if (!connector_has_possible_crtc(connector, modeset->crtc)) + continue; + + modeset->mode = drm_mode_duplicate(client->dev, mode); + if (!modeset->mode) { + ret = -ENOMEM; + break; + } + + drm_mode_set_crtcinfo(modeset->mode, CRTC_INTERLACE_HALVE_V); + + drm_connector_get(connector); + modeset->connectors[modeset->num_connectors++] = connector; + + modeset->fb = fb; + ret = 0; + break; + } + + mutex_unlock(&client->modeset_mutex); + + return ret; +} +EXPORT_SYMBOL(drm_client_modeset_set); + +/** + * drm_client_modeset_set_property() - Set a property on the current configuration + * @client: DRM client + * @obj: DRM Mode Object + * @prop: DRM Property + * @value: Property value + * + * Note: Currently only implemented for atomic drivers. + * + * Returns: + * Zero on success or negative error code on failure. + */ +int drm_client_modeset_set_property(struct drm_client_dev *client, struct drm_mode_object *obj, + struct drm_property *prop, u64 value) +{ + struct drm_client_property *properties; + int ret = 0; + + if (!prop) + return -EINVAL; + + if (!drm_drv_uses_atomic_modeset(client->dev)) + return -EOPNOTSUPP; + + mutex_lock(&client->modeset_mutex); + + properties = krealloc(client->properties, + (client->num_properties + 1) * sizeof(*properties), GFP_KERNEL); + if (!properties) { + ret = -ENOMEM; + goto unlock; + } + + properties[client->num_properties].obj = obj; + properties[client->num_properties].prop = prop; + properties[client->num_properties].value = value; + client->properties = properties; + client->num_properties++; +unlock: + mutex_unlock(&client->modeset_mutex); + + return ret; +} +EXPORT_SYMBOL(drm_client_modeset_set_property); + +/** + * drm_client_modeset_set_rotation() - Set rotation on the current configuration + * @client: DRM client + * @value: Rotation value + * + * Returns: + * Zero on success or negative error code on failure. + */ +int drm_client_modeset_set_rotation(struct drm_client_dev *client, u64 value) +{ + struct drm_plane *plane = NULL; + struct drm_mode_set *modeset; + + mutex_lock(&client->modeset_mutex); + drm_client_for_each_modeset(modeset, client) { + if (modeset->mode) { + plane = modeset->crtc->primary; + break; + } + } + mutex_unlock(&client->modeset_mutex); + + if (!plane) + return -ENOENT; + + return drm_client_modeset_set_property(client, &plane->base, + plane->rotation_property, value); +} +EXPORT_SYMBOL(drm_client_modeset_set_rotation); + /** * drm_client_rotation() - Check the initial rotation value * @modeset: DRM modeset @@ -973,6 +1101,7 @@ static int drm_client_modeset_commit_atomic(struct drm_client_dev *client, bool struct drm_atomic_state *state; struct drm_modeset_acquire_ctx ctx; struct drm_mode_set *mode_set; + unsigned int i; int ret; drm_modeset_acquire_init(&ctx, 0); @@ -1033,6 +1162,14 @@ static int drm_client_modeset_commit_atomic(struct drm_client_dev *client, bool } } + for (i = 0; i < client->num_properties; i++) { + struct drm_client_property *prop = &client->properties[i]; + + ret = drm_atomic_set_property(state, NULL, prop->obj, prop->prop, prop->value); + if (ret) + goto out_state; + } + if (check) ret = drm_atomic_check_only(state); else diff --git a/include/drm/drm_client.h b/include/drm/drm_client.h index 498089b647da..bdcdc30519e6 100644 --- a/include/drm/drm_client.h +++ b/include/drm/drm_client.h @@ -16,6 +16,7 @@ struct drm_file; struct drm_framebuffer; struct drm_gem_object; struct drm_minor; +struct drm_property; struct module; /** @@ -64,6 +65,26 @@ struct drm_client_funcs { int (*hotplug)(struct drm_client_dev *client); }; +/** + * struct drm_client_property - DRM client property + */ +struct drm_client_property { + /** + * @obj: DRM Mode Object to which the property belongs. + */ + struct drm_mode_object *obj; + + /** + * @prop: DRM Property. + */ + struct drm_property *prop; + + /** + * @value: Property value. + */ + u64 value; +}; + /** * struct drm_client_dev - DRM client instance */ @@ -97,7 +118,7 @@ struct drm_client_dev { struct drm_file *file; /** - * @modeset_mutex: Protects @modesets. + * @modeset_mutex: Protects @modesets and @properties. */ struct mutex modeset_mutex; @@ -105,6 +126,16 @@ struct drm_client_dev { * @modesets: CRTC configurations */ struct drm_mode_set *modesets; + + /** + * @properties: DRM properties attached to the configuration. + */ + struct drm_client_property *properties; + + /** + * @num_properties: Number of attached properties. + */ + unsigned int num_properties; }; int drm_client_init(struct drm_device *dev, struct drm_client_dev *client, @@ -163,6 +194,11 @@ void drm_client_buffer_vunmap(struct drm_client_buffer *buffer); int drm_client_modeset_create(struct drm_client_dev *client); void drm_client_modeset_free(struct drm_client_dev *client); int drm_client_modeset_probe(struct drm_client_dev *client, unsigned int width, unsigned int height); +int drm_client_modeset_set(struct drm_client_dev *client, struct drm_connector *connector, + struct drm_display_mode *mode, struct drm_framebuffer *fb); +int drm_client_modeset_set_property(struct drm_client_dev *client, struct drm_mode_object *obj, + struct drm_property *prop, u64 value); +int drm_client_modeset_set_rotation(struct drm_client_dev *client, u64 value); bool drm_client_rotation(struct drm_mode_set *modeset, unsigned int *rotation); int drm_client_modeset_check(struct drm_client_dev *client); int drm_client_modeset_commit_locked(struct drm_client_dev *client);