From patchwork Tue May 11 04:18:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 434381 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 C9294C433ED for ; Tue, 11 May 2021 04:19:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AF4D86191F for ; Tue, 11 May 2021 04:19:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230247AbhEKEUS (ORCPT ); Tue, 11 May 2021 00:20:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230271AbhEKEUJ (ORCPT ); Tue, 11 May 2021 00:20:09 -0400 Received: from mail-oo1-xc2e.google.com (mail-oo1-xc2e.google.com [IPv6:2607:f8b0:4864:20::c2e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1EDD4C0613ED for ; Mon, 10 May 2021 21:18:59 -0700 (PDT) Received: by mail-oo1-xc2e.google.com with SMTP id t17-20020a4a3e110000b02901fab2f46a48so3948101oot.6 for ; Mon, 10 May 2021 21:18:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=UHDiz1eezJ432ML1+q0u/7YP2AqbZQOs7C+Mh2wfUZM=; b=elkI4iI8zU5LP6C7fY67XaMyEKBfxs65uArPZDePbpFwolvnqmBPpTehyUjLmimqUB KlpbDcYlJkSLYpDEXMeFSvWvRGzuim++ElCuaSmTzN8LnFQMpkVDK2txkOUNF8A9zcNu DV0d0YZzCNSy7vhEpikEGYRyRkDAPjuTXJyNjvgbyNhCXsWBOh4qcJUD4XMZZu+nSuiW USJ75cDR9zxpb5sXoAmDReAldjQ09u/5Adqmkslbsoasle3Jk3ZGfY9eTdFkrJJ7HyMd KCcZuJCrPjH1qd8kRlJcRO4yijomLQ3MeKT3jcusbzPV7KjUy+FhelXURriC6o/E28gK iHlg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=UHDiz1eezJ432ML1+q0u/7YP2AqbZQOs7C+Mh2wfUZM=; b=hoYbowP4caFCMEEQbOJO1nPuJW5jlyioOYAdQSHua6qtO1bhGhSOvU2IzmqzitctZ2 Q7WCXfit04QKIu732q5D97Igxj5cO0G5x5jhi9TzbYiGUSCfqgz1HH+3PywZC8vNjA/g eduoeR6i+56iunYU9SP2IYPlu1OXhHWmkz2lZmVcbX14M/cK8egunWjRRNbv68o8/UiH x+fgPhZBTbNe3fiY7z6NaQW3b6rVekyLxTe/lZeFHRJwDYt7jbIJZr7LWWqA6HI/szM/ jv2iNM5UB4emvPcCoO9SjxiN36ayzurKcV9cpX92JBOIBEwwXgcM/I9jH9EctCcRS3/C VvmQ== X-Gm-Message-State: AOAM530WcLKpWYKR9A9nAPH9t9jZeYw7i0gCPIHounl4xsY9sdWbvv3C 6SPtUube1J7P2e/Cq82yjOD+6g== X-Google-Smtp-Source: ABdhPJz/6oZvGjOsOX2nLMv/1sonOntXRywl8G5ChsiimZhwdTrNEprOLhFcZFB7PhMjRt2LRko6CQ== X-Received: by 2002:a4a:4f06:: with SMTP id c6mr21827742oob.34.1620706738506; Mon, 10 May 2021 21:18:58 -0700 (PDT) Received: from localhost.localdomain ([2607:fb90:e623:42c1:10df:adff:fec2:f1d]) by smtp.gmail.com with ESMTPSA id z15sm558647otp.20.2021.05.10.21.18.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 May 2021 21:18:58 -0700 (PDT) From: Bjorn Andersson To: Rob Clark , Sean Paul , David Airlie , Daniel Vetter , Rob Herring , Dmitry Baryshkov Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/4] drm/msm/dpu: Clear boot loader configured data paths Date: Mon, 10 May 2021 23:18:50 -0500 Message-Id: <20210511041852.592295-3-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210511041852.592295-1-bjorn.andersson@linaro.org> References: <20210511041852.592295-1-bjorn.andersson@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org It's typical for the bootloader to configure CTL_0 for the boot splash or EFIFB, but for non-DSI use cases the DPU driver tend to pick another CTL and the system might end up with two configured data paths producing data on the same INTF - with resulting graphical artifacts. Naturally the end goal would be to inherit the bootloader's configuration and provide the user with a glitch free handover from the boot configuration to a running DPU. But such effort will affect clocks, regulators, power-domains etc, so in the meantime this patch simply disables all INTFs and clear all configured data paths, to avoid the graphical artifacts. Signed-off-by: Bjorn Andersson --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 4 +++ drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 2 ++ drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 36 ++++++++++++++++++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h | 8 +++++ 4 files changed, 50 insertions(+) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c index 2d4645e01ebf..7aba27c1055a 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c @@ -349,9 +349,13 @@ static void dpu_hw_ctl_clear_all_blendstages(struct dpu_hw_ctl *ctx) DPU_REG_WRITE(c, CTL_LAYER_EXT(LM_0 + i), 0); DPU_REG_WRITE(c, CTL_LAYER_EXT2(LM_0 + i), 0); DPU_REG_WRITE(c, CTL_LAYER_EXT3(LM_0 + i), 0); + + ctx->pending_flush_mask |= dpu_hw_ctl_get_bitmask_mixer(ctx, LM_0 + i); } DPU_REG_WRITE(c, CTL_FETCH_PIPE_ACTIVE, 0); + + ctx->pending_flush_mask |= CTL_FLUSH_MASK_CTL; } static void dpu_hw_ctl_setup_blendstage(struct dpu_hw_ctl *ctx, diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index 88e9cc38c13b..8b01cb660381 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -970,6 +970,8 @@ static int dpu_kms_hw_init(struct msm_kms *kms) dpu_kms->rm_init = true; + dpu_rm_clear_boot_config(&dpu_kms->rm, dpu_kms->catalog); + dpu_kms->hw_mdp = dpu_hw_mdptop_init(MDP_TOP, dpu_kms->mmio, dpu_kms->catalog); if (IS_ERR(dpu_kms->hw_mdp)) { diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c index fd2d104f0a91..2cf47084482f 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c @@ -4,6 +4,7 @@ */ #define pr_fmt(fmt) "[drm:%s] " fmt, __func__ +#include #include "dpu_kms.h" #include "dpu_hw_lm.h" #include "dpu_hw_ctl.h" @@ -229,6 +230,41 @@ int dpu_rm_init(struct dpu_rm *rm, return rc ? rc : -EFAULT; } +void dpu_rm_clear_boot_config(struct dpu_rm *rm, struct dpu_mdss_cfg *cat) +{ + struct dpu_hw_intf *intf; + struct dpu_hw_ctl *ctl; + int i; + + for (i = INTF_0; i < INTF_MAX; i++) { + if (!rm->intf_blks[i - INTF_0]) + continue; + + DPU_DEBUG("disabling intf%d timing engine\n", i - INTF_0); + + intf = to_dpu_hw_intf(rm->intf_blks[i - INTF_0]); + intf->ops.enable_timing(intf, 0); + } + + /* + * Wait one frame for the INTF timing engine to stop, and then wait one + * more frame, per the documentation. + */ + msleep(32); + + for (i = CTL_0; i < CTL_MAX; i++) { + if (!rm->ctl_blks[i - CTL_0]) + continue; + + DPU_DEBUG("clearing ctl%d layer configuration\n", i - CTL_0); + + ctl = to_dpu_hw_ctl(rm->ctl_blks[i - CTL_0]); + ctl->ops.clear_all_blendstages(ctl); + ctl->ops.trigger_flush(ctl); + ctl->ops.trigger_start(ctl); + } +} + static bool _dpu_rm_needs_split_display(const struct msm_display_topology *top) { return top->num_intf > 1; diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h index 1f12c8d5b8aa..53cd649614a3 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.h @@ -88,5 +88,13 @@ void dpu_rm_release(struct dpu_global_state *global_state, int dpu_rm_get_assigned_resources(struct dpu_rm *rm, struct dpu_global_state *global_state, uint32_t enc_id, enum dpu_hw_blk_type type, struct dpu_hw_blk **blks, int blks_size); + +/** + * dpu_rm_clear_boot_config() - Tear down any data paths configured by boot + * @rm: DPU Resource Manger handle + * @cat: Pointer to hardware catalog + */ +void dpu_rm_clear_boot_config(struct dpu_rm *rm, struct dpu_mdss_cfg *cat); + #endif /* __DPU_RM_H__ */