From patchwork Mon Oct 29 13:45:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 10659303 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 9DE8013A4 for ; Mon, 29 Oct 2018 13:45:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8A06428746 for ; Mon, 29 Oct 2018 13:45:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7E17128776; Mon, 29 Oct 2018 13:45:27 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2778F28746 for ; Mon, 29 Oct 2018 13:45:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 68CE4890EF; Mon, 29 Oct 2018 13:45:25 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8BFC0890EF for ; Mon, 29 Oct 2018 13:45:24 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 0E714307EAB8; Mon, 29 Oct 2018 13:45:24 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-116-158.ams2.redhat.com [10.36.116.158]) by smtp.corp.redhat.com (Postfix) with ESMTP id 746805EDEA; Mon, 29 Oct 2018 13:45:16 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id A22BDB3DC7; Mon, 29 Oct 2018 14:45:15 +0100 (CET) From: Gerd Hoffmann To: dri-devel@lists.freedesktop.org Subject: [PATCH v3] drm/bochs: add edid support. Date: Mon, 29 Oct 2018 14:45:07 +0100 Message-Id: <20181029134507.7775-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Mon, 29 Oct 2018 13:45:24 +0000 (UTC) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , David Airlie , Gerd Hoffmann , open list , "open list:DRM DRIVER FOR BOCHS VIRTUAL GPU" MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Recent qemu (latest master branch, upcoming 3.1 release) got support for EDID data. This patch adds guest driver support. EDID support in qemu is not (yet) enabled by default, so please use 'qemu -device VGA,edid=on' for testing. Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/bochs/bochs.h | 1 + drivers/gpu/drm/bochs/bochs_hw.c | 39 +++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/bochs/bochs_kms.c | 18 +++++++++++++++--- 3 files changed, 55 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bochs/bochs.h b/drivers/gpu/drm/bochs/bochs.h index e7a69077e4..06b8166efa 100644 --- a/drivers/gpu/drm/bochs/bochs.h +++ b/drivers/gpu/drm/bochs/bochs.h @@ -66,6 +66,7 @@ struct bochs_device { u16 yres_virtual; u32 stride; u32 bpp; + struct edid *edid; /* drm */ struct drm_device *dev; diff --git a/drivers/gpu/drm/bochs/bochs_hw.c b/drivers/gpu/drm/bochs/bochs_hw.c index cacff73a64..db4afe94c5 100644 --- a/drivers/gpu/drm/bochs/bochs_hw.c +++ b/drivers/gpu/drm/bochs/bochs_hw.c @@ -69,6 +69,41 @@ static void bochs_hw_set_little_endian(struct bochs_device *bochs) #define bochs_hw_set_native_endian(_b) bochs_hw_set_little_endian(_b) #endif +static int bochs_load_edid(struct bochs_device *bochs) +{ + uint8_t *blob; + size_t i, len; + uint8_t num_exts; + + if (!bochs->mmio) + return -1; + + if ((readb(bochs->mmio+0) != 0x00 || + readb(bochs->mmio+1) != 0xff)) + return -1; + + num_exts = readb(bochs->mmio + 126); + len = EDID_LENGTH * (1 + num_exts); + if (len > 0x400 /* vga register offset */) + return -1; + + kfree(bochs->edid); + bochs->edid = kmalloc(len, GFP_KERNEL); + blob = (void *)bochs->edid; + for (i = 0; i < len; i++) { + blob[i] = readb(bochs->mmio+i); + } + + if (!drm_edid_is_valid(bochs->edid)) { + DRM_ERROR("EDID is not valid, ignoring.\n"); + kfree(bochs->edid); + bochs->edid = NULL; + return -1; + } + + return 0; +} + int bochs_hw_init(struct drm_device *dev) { struct bochs_device *bochs = dev->dev_private; @@ -150,6 +185,9 @@ int bochs_hw_init(struct drm_device *dev) } noext: + if (bochs_load_edid(bochs) == 0) + DRM_INFO("Found EDID data blob.\n"); + return 0; } @@ -164,6 +202,7 @@ void bochs_hw_fini(struct drm_device *dev) if (bochs->fb_map) iounmap(bochs->fb_map); pci_release_regions(dev->pdev); + kfree(bochs->edid); } void bochs_hw_setmode(struct bochs_device *bochs, diff --git a/drivers/gpu/drm/bochs/bochs_kms.c b/drivers/gpu/drm/bochs/bochs_kms.c index 9bc5b438ae..b9931443a7 100644 --- a/drivers/gpu/drm/bochs/bochs_kms.c +++ b/drivers/gpu/drm/bochs/bochs_kms.c @@ -213,10 +213,17 @@ static void bochs_encoder_init(struct drm_device *dev) static int bochs_connector_get_modes(struct drm_connector *connector) { - int count; + struct bochs_device *bochs = + container_of(connector, struct bochs_device, connector); + int count = 0; - count = drm_add_modes_noedid(connector, 8192, 8192); - drm_set_preferred_mode(connector, defx, defy); + if (bochs->edid) + count = drm_add_edid_modes(connector, bochs->edid); + + if (!count) { + count = drm_add_modes_noedid(connector, 8192, 8192); + drm_set_preferred_mode(connector, defx, defy); + } return count; } @@ -271,6 +278,11 @@ static void bochs_connector_init(struct drm_device *dev) drm_connector_helper_add(connector, &bochs_connector_connector_helper_funcs); drm_connector_register(connector); + + if (bochs->edid) { + drm_connector_attach_edid_property(connector); + drm_connector_update_edid_property(connector, bochs->edid); + } }