From patchwork Wed Mar 18 17:45:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 11445807 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 25E5B17E6 for ; Wed, 18 Mar 2020 17:45:21 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 04AEF20753 for ; Wed, 18 Mar 2020 17:45:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 04AEF20753 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2235F6E93D; Wed, 18 Mar 2020 17:45:20 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id BD9DA6E93C for ; Wed, 18 Mar 2020 17:45:18 +0000 (UTC) IronPort-SDR: 5GW65qW3DFZJs6yPz43lRJRsTVSsunPnD8ULykTqum0rFeIoCEfJ3H2WWkSp6rpMm3G35FqyPg KQo1bg1O3R8A== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Mar 2020 10:45:18 -0700 IronPort-SDR: GBASBnwKNrN5WeudhPnAU5Wbm0ilVOFKJyzFMw+wWPuGDDIqh8/KugNetCX5AYlVrcGunxnANp 3MtTrsunTjYA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,568,1574150400"; d="scan'208";a="236699164" Received: from stinkbox.fi.intel.com (HELO stinkbox) ([10.237.72.174]) by fmsmga007.fm.intel.com with SMTP; 18 Mar 2020 10:45:16 -0700 Received: by stinkbox (sSMTP sendmail emulation); Wed, 18 Mar 2020 19:45:15 +0200 From: Ville Syrjala To: intel-gfx@lists.freedesktop.org Date: Wed, 18 Mar 2020 19:45:15 +0200 Message-Id: <20200318174515.31637-1-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200305174538.16234-1-ville.syrjala@linux.intel.com> References: <20200305174538.16234-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v2] drm/i915: Fix crtc nv12 etc. plane bitmasks for DPMS off X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Ville Syrjälä We only consider crtc_state->enable when initially calculating plane visibility. Later on we try to override the plane's state to invisible if the crtc is in DPMS off state (crtc_state->active==false). Unfortunately the code doing that only updates the plane_state.visible flag and the crtc_state.active_planes bimask, but forgets to update some of the other plane bitmasks stored in the crtc_state. Namely crtc_state.nv12_planes is left set up based on the original visibility check which makes icl_check_nv12_planes() pick a slave plane for the flagged plane in the bitmask. Later on we hit the watermark code which sees a plane with a slave assigned and it then makes the logical assumption that the master plane must itself be visible. Since the master's plane_state.visible flag was already cleared we get a WARN. Fix the problem by clearing all the plane bitmasks for DPMS off. This is more or less the wrong approach and instead we should calculate all the plane related state purely based crtc_state->enable (to guarantee that the subsequent DPMS on can't fail). However in the past we definitely had some roadblocks to making that happen. Not sure how many are left these days, but let's stick to the current approach since it's a much simpler fix to the immediate problem (the WARN). v2: Keep the visible=false, it's important (Rodrigo) Cc: Rodrigo Vivi Signed-off-by: Ville Syrjälä Reviewed-by: Rodrigo Vivi --- .../gpu/drm/i915/display/intel_atomic_plane.c | 21 +++++++++++++------ .../gpu/drm/i915/display/intel_atomic_plane.h | 2 ++ drivers/gpu/drm/i915/display/intel_display.c | 6 ++---- 3 files changed, 19 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.c b/drivers/gpu/drm/i915/display/intel_atomic_plane.c index 457b258683d3..25dfeb3197aa 100644 --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.c +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.c @@ -264,6 +264,20 @@ void intel_plane_copy_uapi_to_hw_state(struct intel_plane_state *plane_state, plane_state->hw.color_range = from_plane_state->uapi.color_range; } +void intel_plane_set_invisible(struct intel_crtc_state *crtc_state, + struct intel_plane_state *plane_state) +{ + struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane); + + crtc_state->active_planes &= ~BIT(plane->id); + crtc_state->nv12_planes &= ~BIT(plane->id); + crtc_state->c8_planes &= ~BIT(plane->id); + crtc_state->data_rate[plane->id] = 0; + crtc_state->min_cdclk[plane->id] = 0; + + plane_state->uapi.visible = false; +} + int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state, struct intel_crtc_state *new_crtc_state, const struct intel_plane_state *old_plane_state, @@ -273,12 +287,7 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_ const struct drm_framebuffer *fb = new_plane_state->hw.fb; int ret; - new_crtc_state->active_planes &= ~BIT(plane->id); - new_crtc_state->nv12_planes &= ~BIT(plane->id); - new_crtc_state->c8_planes &= ~BIT(plane->id); - new_crtc_state->data_rate[plane->id] = 0; - new_crtc_state->min_cdclk[plane->id] = 0; - new_plane_state->uapi.visible = false; + intel_plane_set_invisible(new_crtc_state, new_plane_state); if (!new_plane_state->hw.crtc && !old_plane_state->hw.crtc) return 0; diff --git a/drivers/gpu/drm/i915/display/intel_atomic_plane.h b/drivers/gpu/drm/i915/display/intel_atomic_plane.h index a6bbf42bae1f..59dd1fbb02ea 100644 --- a/drivers/gpu/drm/i915/display/intel_atomic_plane.h +++ b/drivers/gpu/drm/i915/display/intel_atomic_plane.h @@ -52,5 +52,7 @@ int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_stat int intel_plane_calc_min_cdclk(struct intel_atomic_state *state, struct intel_plane *plane, bool *need_cdclk_calc); +void intel_plane_set_invisible(struct intel_crtc_state *crtc_state, + struct intel_plane_state *plane_state); #endif /* __INTEL_ATOMIC_PLANE_H__ */ diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 8f23c4d51c33..37bd7ce88ecd 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -12377,10 +12377,8 @@ int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_stat * only combine the results from all planes in the current place? */ if (!is_crtc_enabled) { - plane_state->uapi.visible = visible = false; - crtc_state->active_planes &= ~BIT(plane->id); - crtc_state->data_rate[plane->id] = 0; - crtc_state->min_cdclk[plane->id] = 0; + intel_plane_set_invisible(crtc_state, plane_state); + visible = false; } if (!was_visible && !visible)