From patchwork Wed Jul 12 08:35:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jocelyn Falempe X-Patchwork-Id: 13309803 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 48569EB64DA for ; Wed, 12 Jul 2023 08:38:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6D82310E0D0; Wed, 12 Jul 2023 08:38:08 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3589C10E0D0 for ; Wed, 12 Jul 2023 08:38:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689151085; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=HaB1D5dAm8uVtm8dRR4i9sulU6qBYL1Fc9plsZW3B34=; b=ZHhCnVBGF07SseILi0EvNi3Rr0ItBl0NejPGpQMhobG/ORjwWaspV1eKnb0B3FSe5TaR6P Ns6dvATrgpZ24Wqkh+l21CDyFkvD10aIpM0SBLm7YfCkHJCauaxu1krQ8wamA52SGEecT6 CLZxA9kvnR64EB0sGg2FQfQ5Ky7AVjc= Received: from mimecast-mx02.redhat.com (66.187.233.73 [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-610-Ok4JObstOI6_RGq-EogdPA-1; Wed, 12 Jul 2023 04:38:01 -0400 X-MC-Unique: Ok4JObstOI6_RGq-EogdPA-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6356B1C16FE1; Wed, 12 Jul 2023 08:38:01 +0000 (UTC) Received: from hydra.redhat.com (unknown [10.39.192.87]) by smtp.corp.redhat.com (Postfix) with ESMTP id D35D2492C13; Wed, 12 Jul 2023 08:37:59 +0000 (UTC) From: Jocelyn Falempe To: tzimmermann@suse.de, airlied@redhat.com, kuohsiang_chou@aspeedtech.com, jammy_huang@aspeedtech.com, jani.nikula@linux.intel.com, dianders@chromium.org Subject: [PATCH v3 1/2] drm/ast: Add BMC virtual connector Date: Wed, 12 Jul 2023 10:35:53 +0200 Message-ID: <20230712083733.223275-1-jfalempe@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jocelyn Falempe , dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Most aspeed devices have a BMC, which allows to remotely see the screen. Also in the common use case, those servers don't have a display connected. So add a Virtual connector, to reflect that even if no display is connected, the framebuffer can still be seen remotely. This prepares the work to implement a detect_ctx() for the Display port connector. Fixes: fae7d186403e ("drm/probe-helper: Default to 640x480 if no EDID on DP") Signed-off-by: Jocelyn Falempe --- drivers/gpu/drm/ast/ast_drv.h | 4 ++ drivers/gpu/drm/ast/ast_mode.c | 67 ++++++++++++++++++++++++++++++++++ 2 files changed, 71 insertions(+) base-commit: b32d5a51f3c21843011d68a58e6ac0b897bce9f2 diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h index 3f6e0c984523..c9659e72002f 100644 --- a/drivers/gpu/drm/ast/ast_drv.h +++ b/drivers/gpu/drm/ast/ast_drv.h @@ -214,6 +214,10 @@ struct ast_device { struct drm_encoder encoder; struct drm_connector connector; } astdp; + struct { + struct drm_encoder encoder; + struct drm_connector connector; + } bmc; } output; bool support_wide_screen; diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index f711d592da52..8896b22eb5cf 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -1735,6 +1735,70 @@ static int ast_astdp_output_init(struct ast_device *ast) return 0; } +/* + * BMC virtual Connector + */ + +static int ast_bmc_connector_helper_get_modes(struct drm_connector *connector) +{ + return drm_add_modes_noedid(connector, 1024, 768); +} + +static const struct drm_connector_helper_funcs ast_bmc_connector_helper_funcs = { + .get_modes = ast_bmc_connector_helper_get_modes, +}; + +static const struct drm_connector_funcs ast_bmc_connector_funcs = { + .reset = drm_atomic_helper_connector_reset, + .fill_modes = drm_helper_probe_single_connector_modes, + .destroy = drm_connector_cleanup, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static int ast_bmc_connector_init(struct drm_device *dev, + struct drm_connector *connector) +{ + int ret; + + ret = drm_connector_init(dev, connector, &ast_bmc_connector_funcs, + DRM_MODE_CONNECTOR_VIRTUAL); + if (ret) + return ret; + + drm_connector_helper_add(connector, &ast_bmc_connector_helper_funcs); + + connector->interlace_allowed = 0; + connector->doublescan_allowed = 0; + connector->polled = 0; + + return 0; +} + +static int ast_bmc_output_init(struct ast_device *ast) +{ + struct drm_device *dev = &ast->base; + struct drm_crtc *crtc = &ast->crtc; + struct drm_encoder *encoder = &ast->output.bmc.encoder; + struct drm_connector *connector = &ast->output.bmc.connector; + int ret; + + ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_VIRTUAL); + if (ret) + return ret; + encoder->possible_crtcs = drm_crtc_mask(crtc); + + ret = ast_bmc_connector_init(dev, connector); + if (ret) + return ret; + + ret = drm_connector_attach_encoder(connector, encoder); + if (ret) + return ret; + + return 0; +} + /* * Mode config */ @@ -1842,6 +1906,9 @@ int ast_mode_config_init(struct ast_device *ast) if (ret) return ret; } + ret = ast_bmc_output_init(ast); + if (ret) + return ret; drm_mode_config_reset(dev);