From patchwork Wed Aug 2 13:20:51 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 9876789 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 5AAF260360 for ; Wed, 2 Aug 2017 13:21:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 43EE6287BD for ; Wed, 2 Aug 2017 13:21:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4233928821; Wed, 2 Aug 2017 13:21:23 +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=-4.2 required=2.0 tests=BAYES_00, 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 7BDD2287BD for ; Wed, 2 Aug 2017 13:20:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C5F9A6F132; Wed, 2 Aug 2017 13:20:55 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 915896F132 for ; Wed, 2 Aug 2017 13:20:54 +0000 (UTC) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 Aug 2017 06:20:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.41,311,1498546800"; d="scan'208"; a="1201694250" Received: from getta-mobl.ger.corp.intel.com (HELO patser.lan) ([10.252.39.168]) by fmsmga002.fm.intel.com with ESMTP; 02 Aug 2017 06:20:52 -0700 Subject: [PATCH] drm/omap: Rework the rotation-on-crtc hack To: Daniel Vetter , Laurent Pinchart References: <20170725080122.20548-2-daniel.vetter@ffwll.ch> <20170731154235.6402-1-daniel.vetter@ffwll.ch> <2563110.xQjJWl2ggy@avalon> From: Maarten Lankhorst Message-ID: <0348f52a-94d4-4174-2060-6104e145acfa@linux.intel.com> Date: Wed, 2 Aug 2017 15:20:51 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Cc: Daniel Vetter , Tomi Valkeinen , DRI Development 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 Op 02-08-17 om 10:02 schreef Daniel Vetter: > On Tue, Aug 1, 2017 at 12:20 PM, Laurent Pinchart > wrote: >> On Tuesday 01 Aug 2017 07:59:13 Maarten Lankhorst wrote: >>> + pri_state = drm_atomic_get_new_plane_state(crtc->primary, >>> state->state); >>> + if (pri_state) { >>> + struct omap_crtc_state *omap_crtc_state = >>> + to_omap_crtc_state(state); >>> + >>> + omap_crtc_state->zpos = pri_state->zpos; >>> + omap_crtc_state->rotation = pri_state->rotation; >>> + } >>> >>> That way even when updating the property through the primary plane, it gets >>> reflected correctly. For example when vt switching with fbdev. >> Let's not make it over-complicated. This hack is only needed fo the legacy X >> OMAP modesetting driver. The CRTC zpos and rotation properties should not be >> used through the atomic API. > Marten is right, the atomic properties are all such that you can > unconditionally restore them (e.g. fences report a no-op value), to > make compositor switching easier. Not sure anyone implements that, but > I think it's a useful idea to keep. I'll respin (or maybe Maarten > simply submits his patch with a proper sob ...). > -Daniel Here you go, compile tested version. :) ----8<---- I want/need to rework the core property handling, and this hack is getting in the way. But since it's a non-standard propety only used by legacy userspace we know that this will only every be called from ioctl code. And never on some other free-standing state struct, where this old hack wouldn't work either. v2: don't forget zorder and get_property! v3: Shadow the legacy state to avoid locking issues in get_property (Maarten). v4: Review from Laurent - Move struct omap_crtc_state into omap_crtc.c - Clean up comments. - Don't forget to copy the shadowed state over on duplicate. v5: Don't forget to update the reset handler (Maarten). v6: Update omap_crtc_state shadow values in omap_crtc_atomic_check (Maarten). Reviewed-by: Laurent Pinchart (v4) Cc: Maarten Lankhorst Cc: Tomi Valkeinen Signed-off-by: Daniel Vetter Signed-off-by: Maarten Lankhorst --- drivers/gpu/drm/omapdrm/omap_crtc.c | 118 +++++++++++++++++++++++++----------- 1 file changed, 81 insertions(+), 37 deletions(-) diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c index 14e8a7738b06..b842fcd9914a 100644 --- a/drivers/gpu/drm/omapdrm/omap_crtc.c +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c @@ -26,6 +26,16 @@ #include "omap_drv.h" +#define to_omap_crtc_state(x) container_of(x, struct omap_crtc_state, base) + +struct omap_crtc_state { + /* Must be first. */ + struct drm_crtc_state base; + /* Shadow values for legacy userspace support. */ + unsigned int rotation; + unsigned int zpos; +}; + #define to_omap_crtc(x) container_of(x, struct omap_crtc, base) struct omap_crtc { @@ -445,6 +455,8 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc *crtc) static int omap_crtc_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state) { + struct drm_plane_state *pri_state; + if (state->color_mgmt_changed && state->gamma_lut) { uint length = state->gamma_lut->length / sizeof(struct drm_color_lut); @@ -453,6 +465,16 @@ static int omap_crtc_atomic_check(struct drm_crtc *crtc, return -EINVAL; } + pri_state = drm_atomic_get_new_plane_state(state->state, crtc->primary); + if (pri_state) { + struct omap_crtc_state *omap_crtc_state = + to_omap_crtc_state(state); + + /* Mirror new values for zpos and rotation in omap_crtc_state */ + omap_crtc_state->zpos = pri_state->zpos; + omap_crtc_state->rotation = pri_state->rotation; + } + return 0; } @@ -498,39 +520,32 @@ static void omap_crtc_atomic_flush(struct drm_crtc *crtc, spin_unlock_irq(&crtc->dev->event_lock); } -static bool omap_crtc_is_plane_prop(struct drm_crtc *crtc, - struct drm_property *property) -{ - struct drm_device *dev = crtc->dev; - struct omap_drm_private *priv = dev->dev_private; - - return property == priv->zorder_prop || - property == crtc->primary->rotation_property; -} - static int omap_crtc_atomic_set_property(struct drm_crtc *crtc, struct drm_crtc_state *state, struct drm_property *property, uint64_t val) { - if (omap_crtc_is_plane_prop(crtc, property)) { - struct drm_plane_state *plane_state; - struct drm_plane *plane = crtc->primary; - - /* - * Delegate property set to the primary plane. Get the plane - * state and set the property directly. - */ - - plane_state = drm_atomic_get_plane_state(state->state, plane); - if (IS_ERR(plane_state)) - return PTR_ERR(plane_state); + struct omap_drm_private *priv = crtc->dev->dev_private; + struct drm_plane_state *plane_state; - return drm_atomic_plane_set_property(plane, plane_state, - property, val); + /* + * Delegate property set to the primary plane. Get the plane state and + * set the property directly, but keep a shadow copy for the + * atomic_get_property callback. + */ + plane_state = drm_atomic_get_plane_state(state->state, crtc->primary); + if (IS_ERR(plane_state)) + return PTR_ERR(plane_state); + + if (property == crtc->primary->rotation_property) { + plane_state->rotation = val; + } else if (property == priv->zorder_prop) { + plane_state->zpos = val; + } else { + return -EINVAL; } - return -EINVAL; + return 0; } static int omap_crtc_atomic_get_property(struct drm_crtc *crtc, @@ -538,28 +553,57 @@ static int omap_crtc_atomic_get_property(struct drm_crtc *crtc, struct drm_property *property, uint64_t *val) { - if (omap_crtc_is_plane_prop(crtc, property)) { - /* - * Delegate property get to the primary plane. The - * drm_atomic_plane_get_property() function isn't exported, but - * can be called through drm_object_property_get_value() as that - * will call drm_atomic_get_property() for atomic drivers. - */ - return drm_object_property_get_value(&crtc->primary->base, - property, val); - } + struct omap_drm_private *priv = crtc->dev->dev_private; + struct omap_crtc_state *omap_state = to_omap_crtc_state(state); + + if (property == crtc->primary->rotation_property) + return omap_state->rotation; + else if (property == priv->zorder_prop) + return omap_state->zpos; return -EINVAL; } +static void omap_crtc_reset(struct drm_crtc *crtc) +{ + if (crtc->state) + __drm_atomic_helper_crtc_destroy_state(crtc->state); + + kfree(crtc->state); + crtc->state = kzalloc(sizeof(struct omap_crtc_state), GFP_KERNEL); + + if (crtc->state) + crtc->state->crtc = crtc; +} + +static struct drm_crtc_state * +omap_crtc_duplicate_state(struct drm_crtc *crtc) +{ + struct omap_crtc_state *state, *current_state; + + if (WARN_ON(!crtc->state)) + return NULL; + + current_state = to_omap_crtc_state(crtc->state); + + state = kmalloc(sizeof(*state), GFP_KERNEL); + if (state) + __drm_atomic_helper_crtc_duplicate_state(crtc, &state->base); + + state->zpos = current_state->zpos; + state->rotation = current_state->rotation; + + return &state->base; +} + static const struct drm_crtc_funcs omap_crtc_funcs = { - .reset = drm_atomic_helper_crtc_reset, + .reset = omap_crtc_reset, .set_config = drm_atomic_helper_set_config, .destroy = omap_crtc_destroy, .page_flip = drm_atomic_helper_page_flip, .gamma_set = drm_atomic_helper_legacy_gamma_set, .set_property = drm_atomic_helper_crtc_set_property, - .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, + .atomic_duplicate_state = omap_crtc_duplicate_state, .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, .atomic_set_property = omap_crtc_atomic_set_property, .atomic_get_property = omap_crtc_atomic_get_property,