From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 736A6C54FCB for ; Fri, 24 Apr 2020 15:39:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4D68020776 for ; Fri, 24 Apr 2020 15:39:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cerno.tech header.i=@cerno.tech header.b="hjoZbdM5"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="alRPB36B" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729066AbgDXPjS (ORCPT ); Fri, 24 Apr 2020 11:39:18 -0400 Received: from wnew2-smtp.messagingengine.com ([64.147.123.27]:36063 "EHLO wnew2-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728524AbgDXPgf (ORCPT ); Fri, 24 Apr 2020 11:36:35 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailnew.west.internal (Postfix) with ESMTP id 1E62A1458; Fri, 24 Apr 2020 11:36:34 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Fri, 24 Apr 2020 11:36:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cerno.tech; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=fm2; bh=D8dEwkq3X2WC7 BWcKxRQwnGqBepwqpcl1orVBKVWao8=; b=hjoZbdM5iJ9p65etstAMDgKox1fxS cpuDQA/CkpE2EqKsbdFL3OqSFqnEjw6lQ+sTXY869xvZZhYPXTinWKBrE/+UquoU e0a4XP+n+5pIyAyCtbKnRu9DmnzT6leUewls+JiL33XX2qDFL5BZoMVkF6dY48MF QD7pvR19ku17n/GTw/mg32anPQFVAF434OL3xzxK0TP8XhPSTjc3M+vIhRGvfI1+ CCJ3gYP2I5vpVa/rtAfZ6BSUh/l9BLP2p5iWV0iTT31eKypTbj97euhUOR68HslK WKazdWaACLxVKPMO31KHSK8G+/IT5CckjX5sjkODCryQfn2KOthI6YrxQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=D8dEwkq3X2WC7BWcKxRQwnGqBepwqpcl1orVBKVWao8=; b=alRPB36B ZIc4jz8IjnZ//jq7Z4yfWkuaGUl6EgM8HXKFJjbbh+F+L7s/pQnb61rc/4ljuMlx X+jPg4iVJNbEoCKTHu79HKw5cfGO3dEfGx9IiFNPBg75VdjJSJ6CJgq9VOrqtJSZ 6eGR85DsXd4PSrg7yuEWxZlLWBqXnqXckUB08s6Ob14z16iI2cC4MgJ39MoPa+Vh 1OOMfu1rGWo32FRDe16+yfyAzxuRJBjl4faMokiIRlw9Sh5n8gcr+igjpJh3DAyI /u1/fAktdTd430+aoFY+GYgKyVyMUh4eg0Xvp1PbYNBpMx0eCeUfgae4YjoaE+j3 mneJhfdbc9m9vg== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrhedugdekiecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhvffufffkofgjfhgggfestdekredtredttdenucfhrhhomhepofgrgihimhgv ucftihhprghrugcuoehmrgigihhmvgestggvrhhnohdrthgvtghhqeenucfkphepledtrd ekledrieekrdejieenucevlhhushhtvghrufhiiigvpeegvdenucfrrghrrghmpehmrghi lhhfrhhomhepmhgrgihimhgvsegtvghrnhhordhtvggthh X-ME-Proxy: Received: from localhost (lfbn-tou-1-1502-76.w90-89.abo.wanadoo.fr [90.89.68.76]) by mail.messagingengine.com (Postfix) with ESMTPA id 5E3F33065DA6; Fri, 24 Apr 2020 11:36:33 -0400 (EDT) From: Maxime Ripard To: Nicolas Saenz Julienne , Eric Anholt Cc: dri-devel@lists.freedesktop.org, linux-rpi-kernel@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Dave Stevenson , Tim Gover , Phil Elwell , Maxime Ripard Subject: [PATCH v2 51/91] drm/vc4: crtc: Enable and disable the PV in atomic_enable / disable Date: Fri, 24 Apr 2020 17:34:32 +0200 Message-Id: <9256bf0aab60235d3dc0dc34ceacb89df53e9cfa.1587742492.git-series.maxime@cerno.tech> X-Mailer: git-send-email 2.26.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The VIDEN bit in the pixelvalve currently being used to enable or disable the pixelvalve seems to not be enough in some situations, which whill end up with the pixelvalve stalling. In such a case, even re-enabling VIDEN doesn't bring it back and we need to clear the FIFO. This can only be done if the pixelvalve is disabled though. In order to overcome this, we can configure the pixelvalve during mode_set_no_fb, but only enable it in atomic_enable and flush the FIFO there, and in atomic_disable disable the pixelvalve again. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_crtc.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 3a15d711ff55..00e6ecf5a6d4 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -374,9 +374,7 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc) PV_CONTROL_TRIGGER_UNDERFLOW | PV_CONTROL_WAIT_HSTART | VC4_SET_FIELD(vc4_encoder->clock_select, - PV_CONTROL_CLK_SELECT) | - PV_CONTROL_FIFO_CLR | - PV_CONTROL_EN); + PV_CONTROL_CLK_SELECT)); } static void vc4_crtc_mode_set_nofb(struct drm_crtc *crtc) @@ -467,6 +465,8 @@ static void vc4_crtc_atomic_disable(struct drm_crtc *crtc, ret = wait_for(!(CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN), 1); WARN_ONCE(ret, "Timeout waiting for !PV_VCONTROL_VIDEN\n"); + CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) & ~PV_CONTROL_EN); + if (HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_ENABLE) { HVS_WRITE(SCALER_DISPCTRLX(chan), @@ -554,6 +554,10 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc, require_hvs_enabled(dev); + /* Reset the PV fifo. */ + CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) | + PV_CONTROL_FIFO_CLR | PV_CONTROL_EN); + /* Enable vblank irq handling before crtc is started otherwise * drm_crtc_get_vblank() fails in vc4_crtc_update_dlist(). */ -- git-series 0.9.1