From patchwork Sun Mar 15 21:55:38 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 6013891 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id DDB6ABF911 for ; Sun, 15 Mar 2015 21:55:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C3E9420328 for ; Sun, 15 Mar 2015 21:55:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A8100202F8 for ; Sun, 15 Mar 2015 21:55:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751786AbbCOVzq (ORCPT ); Sun, 15 Mar 2015 17:55:46 -0400 Received: from galahad.ideasonboard.com ([185.26.127.97]:43511 "EHLO galahad.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751562AbbCOVzm (ORCPT ); Sun, 15 Mar 2015 17:55:42 -0400 Received: from avalon.ideasonboard.com (dsl-hkibrasgw3-50ddcc-40.dhcp.inet.fi [80.221.204.40]) by galahad.ideasonboard.com (Postfix) with ESMTPSA id 88FC820BD3; Sun, 15 Mar 2015 22:54:28 +0100 (CET) From: Laurent Pinchart To: dri-devel@lists.freedesktop.org Cc: linux-media@vger.kernel.org, linux-sh@vger.kernel.org, linux-api@vger.kernel.org, Daniel Vetter , Rob Clark , Thierry Reding , Magnus Damm Subject: [RFC/PATCH 3/5] drm/rcar-du: Add VSP1 support to the planes allocator Date: Sun, 15 Mar 2015 23:55:38 +0200 Message-Id: <1426456540-21006-4-git-send-email-laurent.pinchart+renesas@ideasonboard.com> X-Mailer: git-send-email 2.0.5 In-Reply-To: <1426456540-21006-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> References: <1426456540-21006-1-git-send-email-laurent.pinchart+renesas@ideasonboard.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The R8A7790 DU can source frames directly from the VSP1 devices VSPD0 and VSPD1. VSPD0 feeds DU0/1 plane 0, and VSPD1 feeds either DU2 plane 0 or DU0/1 plane 1. Allocate the correct fixed plane when sourcing frames from VSPD0 or VSPD1, and allocate planes in reverse index order otherwise to ensure maximum availability of planes 0 and 1. Signed-off-by: Laurent Pinchart --- drivers/gpu/drm/rcar-du/rcar_du_kms.c | 40 ++++++++++++++++++++++++++++----- drivers/gpu/drm/rcar-du/rcar_du_plane.c | 1 + drivers/gpu/drm/rcar-du/rcar_du_plane.h | 7 ++++++ 3 files changed, 43 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index fb052bca574f..17f89bfca8f8 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -244,11 +244,41 @@ static unsigned int rcar_du_plane_hwmask(struct rcar_du_plane_state *state) return mask; } -static int rcar_du_plane_hwalloc(unsigned int num_planes, unsigned int free) +/* + * The R8A7790 DU can source frames directly from the VSP1 devices VSPD0 and + * VSPD1. VSPD0 feeds DU0/1 plane 0, and VSPD1 feeds either DU2 plane 0 or + * DU0/1 plane 1. + * + * Allocate the correct fixed plane when sourcing frames from VSPD0 or VSPD1, + * and allocate planes in reverse index order otherwise to ensure maximum + * availability of planes 0 and 1. + * + * The caller is responsible for ensuring that the requested source is + * compatible with the DU revision. + */ +static int rcar_du_plane_hwalloc(struct rcar_du_plane *plane, + struct rcar_du_plane_state *state, + unsigned int free) { - unsigned int i; + unsigned int num_planes = state->format->planes; + int fixed = -1; + int i; + + if (state->source == RCAR_DU_PLANE_VSPD0) { + /* VSPD0 feeds plane 0 on DU0/1. */ + if (plane->group->index != 0) + return -EINVAL; + + fixed = 0; + } else if (state->source == RCAR_DU_PLANE_VSPD1) { + /* VSPD1 feeds plane 1 on DU0/1 or plane 0 on DU2. */ + fixed = plane->group->index == 0 ? 1 : 0; + } + + if (fixed >= 0) + return free & (1 << fixed) ? fixed : -EBUSY; - for (i = 0; i < RCAR_DU_NUM_HW_PLANES; ++i) { + for (i = RCAR_DU_NUM_HW_PLANES - 1; i >= 0; --i) { if (!(free & (1 << i))) continue; @@ -256,7 +286,7 @@ static int rcar_du_plane_hwalloc(unsigned int num_planes, unsigned int free) break; } - return i == RCAR_DU_NUM_HW_PLANES ? -EBUSY : i; + return i < 0 ? -EBUSY : i; } static int rcar_du_atomic_check(struct drm_device *dev, @@ -372,7 +402,7 @@ static int rcar_du_atomic_check(struct drm_device *dev, !rcar_du_plane_needs_realloc(plane, plane_state)) continue; - idx = rcar_du_plane_hwalloc(plane_state->format->planes, + idx = rcar_du_plane_hwalloc(plane, plane_state, group_free_planes[plane->group->index]); if (idx < 0) { dev_dbg(rcdu->dev, "%s: no available hardware plane\n", diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c index 210e5c3fd982..80e4dba78aef 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c @@ -288,6 +288,7 @@ static void rcar_du_plane_reset(struct drm_plane *plane) return; state->hwindex = -1; + state->source = RCAR_DU_PLANE_MEMORY; state->alpha = 255; state->colorkey = RCAR_DU_COLORKEY_NONE; state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1; diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.h b/drivers/gpu/drm/rcar-du/rcar_du_plane.h index abff0ebeb195..81c2d361a94f 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.h @@ -28,6 +28,12 @@ struct rcar_du_group; #define RCAR_DU_NUM_KMS_PLANES 9 #define RCAR_DU_NUM_HW_PLANES 8 +enum rcar_du_plane_source { + RCAR_DU_PLANE_MEMORY, + RCAR_DU_PLANE_VSPD0, + RCAR_DU_PLANE_VSPD1, +}; + struct rcar_du_plane { struct drm_plane plane; struct rcar_du_group *group; @@ -51,6 +57,7 @@ struct rcar_du_plane_state { const struct rcar_du_format_info *format; int hwindex; /* 0-based, -1 means unused */ + enum rcar_du_plane_source source; unsigned int alpha; unsigned int colorkey;