From patchwork Wed Aug 5 13:34:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalyan Thota X-Patchwork-Id: 11702503 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 E6887913 for ; Wed, 5 Aug 2020 20:10:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2ED522CBB for ; Wed, 5 Aug 2020 20:10:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728749AbgHEUKl (ORCPT ); Wed, 5 Aug 2020 16:10:41 -0400 Received: from alexa-out.qualcomm.com ([129.46.98.28]:5112 "EHLO alexa-out.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726180AbgHEQ1n (ORCPT ); Wed, 5 Aug 2020 12:27:43 -0400 Received: from ironmsg07-lv.qualcomm.com (HELO ironmsg07-lv.qulacomm.com) ([10.47.202.151]) by alexa-out.qualcomm.com with ESMTP; 05 Aug 2020 06:34:40 -0700 Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by ironmsg07-lv.qulacomm.com with ESMTP/TLS/AES256-SHA; 05 Aug 2020 06:34:38 -0700 Received: from kalyant-linux.qualcomm.com ([10.204.66.210]) by ironmsg02-blr.qualcomm.com with ESMTP; 05 Aug 2020 19:04:07 +0530 Received: by kalyant-linux.qualcomm.com (Postfix, from userid 94428) id D31433EBB; Wed, 5 Aug 2020 19:04:07 +0530 (IST) From: Kalyan Thota To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org Cc: Kalyan Thota , linux-kernel@vger.kernel.org, robdclark@gmail.com, seanpaul@chromium.org, hoegsberg@chromium.org, dianders@chromium.org, mkrishn@codeaurora.org, travitej@codeaurora.org, nganji@codeaurora.org, swboyd@chromium.org, abhinavk@codeaurora.org, ddavenport@chromium.org Subject: [v1] drm/msm/dpu: Fix reservation failures in modeset Date: Wed, 5 Aug 2020 19:04:06 +0530 Message-Id: <1596634446-1413-1-git-send-email-kalyan_t@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org In TEST_ONLY commit, rm global_state will duplicate the object and request for new reservations, once they pass then the new state will be swapped with the old and will be available for the Atomic Commit. This patch fixes some of missing links in the resource reservation sequence mentioned above. 1) Creation of a duplicate state in test_only commit (Rob) 2) Allow resource release only during crtc_active false. For #2 In a modeset operation, swap state happens well before disable. Hence clearing reservations in disable will cause failures in modeset enable. Sequence: Swap state --> old, new modeset disables --> virt disable modeset enable --> virt modeset Allow reservations to be cleared only when crtc active is false as in that case there wont be any modeset enable after disable. Signed-off-by: Kalyan Thota --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 63976dc..b85a576 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -582,7 +582,7 @@ static int dpu_encoder_virt_atomic_check( dpu_kms = to_dpu_kms(priv->kms); mode = &crtc_state->mode; adj_mode = &crtc_state->adjusted_mode; - global_state = dpu_kms_get_existing_global_state(dpu_kms); + global_state = dpu_kms_get_global_state(crtc_state->state); trace_dpu_enc_atomic_check(DRMID(drm_enc)); /* @@ -1172,6 +1172,7 @@ static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc) struct msm_drm_private *priv; struct dpu_kms *dpu_kms; struct dpu_global_state *global_state; + struct drm_crtc_state *crtc_state; int i = 0; if (!drm_enc) { @@ -1191,6 +1192,7 @@ static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc) priv = drm_enc->dev->dev_private; dpu_kms = to_dpu_kms(priv->kms); global_state = dpu_kms_get_existing_global_state(dpu_kms); + crtc_state = drm_enc->crtc->state; trace_dpu_enc_disable(DRMID(drm_enc)); @@ -1220,7 +1222,8 @@ static void dpu_encoder_virt_disable(struct drm_encoder *drm_enc) DPU_DEBUG_ENC(dpu_enc, "encoder disabled\n"); - dpu_rm_release(global_state, drm_enc); + if (crtc_state->active_changed && !crtc_state->active) + dpu_rm_release(global_state, drm_enc); mutex_unlock(&dpu_enc->enc_lock); }