From patchwork Tue Jul 4 17:45:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 699720 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3228DEB64DD for ; Tue, 4 Jul 2023 17:46:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231272AbjGDRqC (ORCPT ); Tue, 4 Jul 2023 13:46:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230195AbjGDRqA (ORCPT ); Tue, 4 Jul 2023 13:46:00 -0400 Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50EBB10D7 for ; Tue, 4 Jul 2023 10:45:59 -0700 (PDT) Received: by mail-lf1-x12a.google.com with SMTP id 2adb3069b0e04-4fba8f2197bso6086025e87.3 for ; Tue, 04 Jul 2023 10:45:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1688492757; x=1691084757; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=cq361WQvKwVqcRhufIcUtyn4OTZxaeJsGxBGpt0ut4M=; b=RmZaSCRwC3f5Td1ec785rzY2U9dq0a9UbOX3/qsLSZiS+zjluov7Cxd+3UW14pcXlJ 15axgdX996cq+vI9ik9iq6UwIHBViWRn79cA4XV5CS0iDOnjuDKa1dn+7YquKP+NR3S0 PYRU4MIc5vPtNx2ve43VaxSSCPQDDG0IvgMevKJC8VwEfD/LwYEw1rKbLtHWFTJrDs2S A6imxMWkOn+N3zjoM/azVuMAC10e50eiYU2dd03cTnXOhgtfvanw8ROY3dM+5vsZSbGH N4Og5rDcXP2wvQmjzyebf60DWIrR7exReDX+OLCONYxDr3SaK3klYshFgM/4JuLes4Xl +VTA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688492757; x=1691084757; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=cq361WQvKwVqcRhufIcUtyn4OTZxaeJsGxBGpt0ut4M=; b=fJh3HyayCVZ2qc55d9eRNPiAnk/1OcPzfHfy+C362Gk1d3tIMoTSwre+1bCk6fVXV5 x19rWjZaqQMs7S0lCCckoVKxY3A9+WUIvN6F349zaFBw+z8T4ZbpMJVdVonssXsfcveX PAmVT5eaZ9ieQs2/GwVKfMolkhzGVQYECxXCvUpX14+bORUfJJr6tHROLnRL3UxYkRzI ABGr289nSSQIiF5kgcGW6TeqvRdYQw2nPI6n6MDV2143PjuovjJaaPcdlkFAqm53vEqx q3a3vkdpq3DNtJZU7pZKW311b1Cr8xxdJZ3NwnvmMK9qYSOCvdpEfki6UqfTVT1VNc1E MHOw== X-Gm-Message-State: ABy/qLatO2fxQ+8321RSO8BaauRUTxcR6frbJIK4GLFGWDX9BK7I2NDh T+s0Jzyc9hzDhXSt8dNqXKDUWQ== X-Google-Smtp-Source: APBJJlFUl00WT8jzitBemmiM1JfL7aZEEnyTzC7J0Eu8HDfCZLRVLU6X7aT/bRGwEtUVrBQ3mE3pZw== X-Received: by 2002:a05:6512:1590:b0:4fb:7666:3bbf with SMTP id bp16-20020a056512159000b004fb76663bbfmr11483586lfb.26.1688492757635; Tue, 04 Jul 2023 10:45:57 -0700 (PDT) Received: from umbar.unikie.fi ([192.130.178.91]) by smtp.gmail.com with ESMTPSA id n25-20020a195519000000b004fb6c61e79bsm4709779lfe.117.2023.07.04.10.45.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Jul 2023 10:45:57 -0700 (PDT) From: Dmitry Baryshkov To: Rob Clark , Sean Paul , Abhinav Kumar , Marijn Suijten Cc: Stephen Boyd , David Airlie , Daniel Vetter , Bjorn Andersson , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org Subject: [PATCH v4 4/4] drm/msm/mdp5: move resource allocation to the _probe function Date: Tue, 4 Jul 2023 20:45:53 +0300 Message-Id: <20230704174553.216248-5-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230704174553.216248-1-dmitry.baryshkov@linaro.org> References: <20230704174553.216248-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org To let the probe function bail early if any of the resources is unavailable, move resource allocattion from kms_init directly to the probe callback. Reviewed-by: Abhinav Kumar Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 100 ++++++++++------------- 1 file changed, 44 insertions(+), 56 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c index 83a5b3bd09d9..52f176e08690 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c @@ -554,20 +554,16 @@ static int mdp5_kms_init(struct drm_device *dev) struct platform_device *pdev; struct mdp5_kms *mdp5_kms; struct mdp5_cfg *config; - struct msm_kms *kms; + struct msm_kms *kms = priv->kms; struct msm_gem_address_space *aspace; - int irq, i, ret; + int i, ret; ret = mdp5_init(to_platform_device(dev->dev), dev); if (ret) return ret; - /* priv->kms would have been populated by the MDP5 driver */ - kms = priv->kms; - if (!kms) - return -ENOMEM; - mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); + pdev = mdp5_kms->pdev; ret = mdp_kms_init(&mdp5_kms->base, &kms_funcs); @@ -576,15 +572,6 @@ static int mdp5_kms_init(struct drm_device *dev) goto fail; } - irq = irq_of_parse_and_map(pdev->dev.of_node, 0); - if (!irq) { - ret = -EINVAL; - DRM_DEV_ERROR(&pdev->dev, "failed to get irq\n"); - goto fail; - } - - kms->irq = irq; - config = mdp5_cfg_get_config(mdp5_kms->cfg); /* make sure things are off before attaching iommu (bootloader could @@ -787,60 +774,23 @@ static int interface_init(struct mdp5_kms *mdp5_kms) static int mdp5_init(struct platform_device *pdev, struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; - struct mdp5_kms *mdp5_kms; + struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(priv->kms)); struct mdp5_cfg *config; u32 major, minor; int ret; - mdp5_kms = devm_kzalloc(&pdev->dev, sizeof(*mdp5_kms), GFP_KERNEL); - if (!mdp5_kms) { - ret = -ENOMEM; - goto fail; - } - - spin_lock_init(&mdp5_kms->resource_lock); - mdp5_kms->dev = dev; - mdp5_kms->pdev = pdev; ret = mdp5_global_obj_init(mdp5_kms); if (ret) goto fail; - mdp5_kms->mmio = msm_ioremap(pdev, "mdp_phys"); - if (IS_ERR(mdp5_kms->mmio)) { - ret = PTR_ERR(mdp5_kms->mmio); - goto fail; - } - - /* mandatory clocks: */ - ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus", true); - if (ret) - goto fail; - ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface", true); - if (ret) - goto fail; - ret = get_clk(pdev, &mdp5_kms->core_clk, "core", true); - if (ret) - goto fail; - ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync", true); - if (ret) - goto fail; - - /* optional clocks: */ - get_clk(pdev, &mdp5_kms->lut_clk, "lut", false); - get_clk(pdev, &mdp5_kms->tbu_clk, "tbu", false); - get_clk(pdev, &mdp5_kms->tbu_rt_clk, "tbu_rt", false); - /* we need to set a default rate before enabling. Set a safe * rate first, then figure out hw revision, and then set a * more optimal rate: */ clk_set_rate(mdp5_kms->core_clk, 200000000); - /* set uninit-ed kms */ - priv->kms = &mdp5_kms->base.base; - pm_runtime_enable(&pdev->dev); mdp5_kms->rpm_enabled = true; @@ -931,15 +881,53 @@ static int mdp5_setup_interconnect(struct platform_device *pdev) static int mdp5_dev_probe(struct platform_device *pdev) { - int ret; + struct mdp5_kms *mdp5_kms; + int ret, irq; DBG(""); + mdp5_kms = devm_kzalloc(&pdev->dev, sizeof(*mdp5_kms), GFP_KERNEL); + if (!mdp5_kms) + return -ENOMEM; + ret = mdp5_setup_interconnect(pdev); if (ret) return ret; - return msm_drv_probe(&pdev->dev, mdp5_kms_init, NULL); + mdp5_kms->pdev = pdev; + + spin_lock_init(&mdp5_kms->resource_lock); + + mdp5_kms->mmio = msm_ioremap(pdev, "mdp_phys"); + if (IS_ERR(mdp5_kms->mmio)) + return PTR_ERR(mdp5_kms->mmio); + + /* mandatory clocks: */ + ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus", true); + if (ret) + return ret; + ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface", true); + if (ret) + return ret; + ret = get_clk(pdev, &mdp5_kms->core_clk, "core", true); + if (ret) + return ret; + ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync", true); + if (ret) + return ret; + + /* optional clocks: */ + get_clk(pdev, &mdp5_kms->lut_clk, "lut", false); + get_clk(pdev, &mdp5_kms->tbu_clk, "tbu", false); + get_clk(pdev, &mdp5_kms->tbu_rt_clk, "tbu_rt", false); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return dev_err_probe(&pdev->dev, irq, "failed to get irq\n"); + + mdp5_kms->base.base.irq = irq; + + return msm_drv_probe(&pdev->dev, mdp5_kms_init, &mdp5_kms->base.base); } static int mdp5_dev_remove(struct platform_device *pdev)