From patchwork Tue Mar 21 15:06:38 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jyri Sarha X-Patchwork-Id: 9636745 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EF699602CC for ; Tue, 21 Mar 2017 15:06:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E471A262F2 for ; Tue, 21 Mar 2017 15:06:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D90ED28358; Tue, 21 Mar 2017 15:06:53 +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=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,T_DKIM_INVALID 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 55D96262F2 for ; Tue, 21 Mar 2017 15:06:53 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C07F7891B5; Tue, 21 Mar 2017 15:06:52 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from lelnx194.ext.ti.com (lelnx194.ext.ti.com [198.47.27.80]) by gabe.freedesktop.org (Postfix) with ESMTPS id AAC56891B5 for ; Tue, 21 Mar 2017 15:06:51 +0000 (UTC) Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by lelnx194.ext.ti.com (8.15.1/8.15.1) with ESMTP id v2LF6m9L006002; Tue, 21 Mar 2017 10:06:48 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1490108808; bh=8+KO0b1JVTWwuhkfRTxcMZw234XEElONrW/4GnHFm+I=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=I8xUlnBTfbyjgBLAdYT+QsXV23x4+NKYi2EDScFVSPC8AwZnpJOCAPBwewzHz27c4 nAvfNukzij3sP5O36vV+xM6kdZlRqxXrNH5IvePZ4mZjrxkXhDnfZAtiemhFODl2Zz Rm0xuU+muNi/DiORowNiofo6drNe//tWb9PWY6RQ= Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id v2LF6mwo010121; Tue, 21 Mar 2017 10:06:48 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.294.0; Tue, 21 Mar 2017 10:06:47 -0500 Received: from jadmar.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id v2LF6j1o010986; Tue, 21 Mar 2017 10:06:47 -0500 From: Jyri Sarha To: Subject: [PATCH v3 1/5] drm/omap: Get rid of DRM_OMAP_NUM_CRTCS config option Date: Tue, 21 Mar 2017 17:06:38 +0200 Message-ID: X-Mailer: git-send-email 1.9.1 In-Reply-To: References: MIME-Version: 1.0 Cc: tomi.valkeinen@ti.com, laurent.pinchart@ideasonboard.com, Jyri Sarha X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Allocate one CRTC for each connected output and get rid of DRM_OMAP_NUM_CRTCS config option. We still can not create more CRTCs than we have DSS display managers. We also reserve one overlay per CRTC for primary plane so we can not have more CRTCs than we have overlays either. Signed-off-by: Jyri Sarha --- drivers/gpu/drm/omapdrm/Kconfig | 9 ------ drivers/gpu/drm/omapdrm/omap_drv.c | 59 +++++++++++--------------------------- 2 files changed, 16 insertions(+), 52 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/Kconfig b/drivers/gpu/drm/omapdrm/Kconfig index 556f81f..b3d08c5 100644 --- a/drivers/gpu/drm/omapdrm/Kconfig +++ b/drivers/gpu/drm/omapdrm/Kconfig @@ -10,15 +10,6 @@ config DRM_OMAP if DRM_OMAP -config DRM_OMAP_NUM_CRTCS - int "Number of CRTCs" - range 1 10 - default 1 if ARCH_OMAP2 || ARCH_OMAP3 - default 2 if ARCH_OMAP4 - help - Select the number of video overlays which can be used as framebuffers. - The remaining overlays are reserved for video. - source "drivers/gpu/drm/omapdrm/dss/Kconfig" source "drivers/gpu/drm/omapdrm/displays/Kconfig" diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index 79a4aad..17c40aa 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -34,11 +34,6 @@ #define DRIVER_MINOR 0 #define DRIVER_PATCHLEVEL 0 -static int num_crtc = CONFIG_DRM_OMAP_NUM_CRTCS; - -MODULE_PARM_DESC(num_crtc, "Number of overlays to use as CRTCs"); -module_param(num_crtc, int, 0600); - /* * mode config funcs */ @@ -322,7 +317,7 @@ static int omap_modeset_init(struct drm_device *dev) struct omap_dss_device *dssdev = NULL; int num_ovls = dss_feat_get_num_ovls(); int num_mgrs = dss_feat_get_num_mgrs(); - int num_crtcs; + int num_crtcs = 0; int i, id = 0; int ret; u32 possible_crtcs; @@ -334,12 +329,15 @@ static int omap_modeset_init(struct drm_device *dev) return ret; /* - * We usually don't want to create a CRTC for each manager, at least - * not until we have a way to expose private planes to userspace. - * Otherwise there would not be enough video pipes left for drm planes. - * We use the num_crtc argument to limit the number of crtcs we create. + * Let's create one CRTC for each connected DSS device if we + * have display managers and overlays (for primary planes) for + * them. */ - num_crtcs = min3(num_crtc, num_mgrs, num_ovls); + for_each_dss_dev(dssdev) + if (omapdss_device_is_connected(dssdev)) + num_crtcs++; + + num_crtcs = min3(num_crtcs, num_mgrs, num_ovls); possible_crtcs = (1 << num_crtcs) - 1; dssdev = NULL; @@ -379,11 +377,9 @@ static int omap_modeset_init(struct drm_device *dev) drm_mode_connector_attach_encoder(connector, encoder); /* - * if we have reached the limit of the crtcs we are allowed to - * create, let's not try to look for a crtc for this - * panel/encoder and onwards, we will, of course, populate the - * the possible_crtcs field for all the encoders with the final - * set of crtcs we create + * if we have reached the limit of the crtcs we can + * create, let's not try to create a crtc for this + * panel/encoder and onwards. */ if (id == num_crtcs) continue; @@ -418,33 +414,6 @@ static int omap_modeset_init(struct drm_device *dev) } /* - * we have allocated crtcs according to the need of the panels/encoders, - * adding more crtcs here if needed - */ - for (; id < num_crtcs; id++) { - - /* find a free manager for this crtc */ - for (i = 0; i < num_mgrs; i++) { - if (!channel_used(dev, i)) - break; - } - - if (i == num_mgrs) { - /* this shouldn't really happen */ - dev_err(dev->dev, "no managers left for crtc\n"); - return -ENOMEM; - } - - ret = omap_modeset_create_crtc(dev, id, i, - possible_crtcs); - if (ret < 0) { - dev_err(dev->dev, - "could not create CRTC (channel %u)\n", i); - return ret; - } - } - - /* * Create normal planes for the remaining overlays: */ for (; id < num_ovls; id++) { @@ -459,6 +428,10 @@ static int omap_modeset_init(struct drm_device *dev) priv->planes[priv->num_planes++] = plane; } + /* + * populate the the possible_crtcs field for all the encoders + * we created. + */ for (i = 0; i < priv->num_encoders; i++) { struct drm_encoder *encoder = priv->encoders[i]; struct omap_dss_device *dssdev =