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=-16.0 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, UNWANTED_LANGUAGE_BODY,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 E0336C43461 for ; Sat, 10 Apr 2021 00:14:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B7A1461178 for ; Sat, 10 Apr 2021 00:14:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235230AbhDJAOs (ORCPT ); Fri, 9 Apr 2021 20:14:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43228 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235208AbhDJAOs (ORCPT ); Fri, 9 Apr 2021 20:14:48 -0400 Received: from mail-lj1-x230.google.com (mail-lj1-x230.google.com [IPv6:2a00:1450:4864:20::230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3AFB4C061762 for ; Fri, 9 Apr 2021 17:14:34 -0700 (PDT) Received: by mail-lj1-x230.google.com with SMTP id p23so4741459ljn.0 for ; Fri, 09 Apr 2021 17:14:34 -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=XVOy4fgMUlHspu+4cBqeL0KKWzBqXTAeE3Y/jlAnjk4=; b=ZsnumkQiVI0JO3QUmCYB70xnS2Qfgrh/bEViTKsPWel/EvTmZnIDicpKY3VlAUsdKa XmuTUmOIWoWgb8Y5x8eOoydy6qGidg3bpd6VPXAKehAiu/j5cqmDnxwj4pgGPCx87ybi Z9sGCRf3POyNk8S3kB1hkANeuJK9cgO84RisLvnPEA6wzKqwxgQH0AQq7PIU7wkmRFU6 9ZjRhLqmnNxLkZas9J0ZwaoBTi/UegcMfnF4/mx0yWydVXTyyWD+R8p1Y5wDXplbF5nI HsEZtuRZhHDDiOTfN9Ro6ga93stMMViYkIxpf7g5tVufTnx1Ua422ZDAxUfJM5cCe4um WXuQ== 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=XVOy4fgMUlHspu+4cBqeL0KKWzBqXTAeE3Y/jlAnjk4=; b=G6V2iAOFBzKLHoXPsGIb0XKjpga4o4CgCOkK1d9FNmYN1UVMtPBHA4Pg3zbtaq4RFw SOZjUPvY9Uf1Q7oMjPQnQ8j0DA9ekZYlVX493fsnchi14CDafWKtKbgfwzru04qpMkAO sw4ybS8dtC1sA89p5Yb7FynCV2UH0820T7dqbSf3BrxBlOhnReUaRfTOWiCH8AAQaSOw veyrJjPDPuVCf+xTIDoD/rSvwe+FfNlkB5ur9oYM504XzsNtxw1YnUEDDCqESAmbUQQA Q2Gi+d0/klTk+TDdw4uXB4b+RasA73lnXxUAS8m8rdlp7P6NAAsKwuMBH/D8REq1f+zK PC9Q== X-Gm-Message-State: AOAM532avPDEJrr9HfeAywJYhOdNYGtBOwlDFKOfxu591PR073+q71Om bLm6U89DlGT8NWWhO3BOOoUl0g== X-Google-Smtp-Source: ABdhPJzrHAAINr94MMEkM9Nz/5LIVbBylUmMFVPcOKPEoo6u/oX0koMC3yWQAkBFpKbGQDEnL0kp3Q== X-Received: by 2002:a2e:8708:: with SMTP id m8mr10886037lji.339.1618013672565; Fri, 09 Apr 2021 17:14:32 -0700 (PDT) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id a17sm323360lfg.20.2021.04.09.17.14.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Apr 2021 17:14:32 -0700 (PDT) From: Dmitry Baryshkov To: Rob Clark , Sean Paul , Jonathan Marek Cc: Stephen Boyd , David Airlie , Daniel Vetter , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org Subject: [RFC 2/3] drm/msm/dpu: hw_intr: always call dpu_hw_intr_clear_intr_status_nolock Date: Sat, 10 Apr 2021 03:14:29 +0300 Message-Id: <20210410001430.1732450-2-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210410001430.1732450-1-dmitry.baryshkov@linaro.org> References: <20210410001430.1732450-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Always call dpu_hw_intr_clear_intr_status_nolock() from the dpu_hw_intr_dispatch_irqs(). This simplifies the callback function and enforces clearing the hw interrupt status. Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c | 9 ----- .../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c | 39 +++++++++---------- .../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h | 9 ----- 3 files changed, 18 insertions(+), 39 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c index c977e8484174..dadb4103b0eb 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_irq.c @@ -41,15 +41,6 @@ static void dpu_core_irq_callback_handler(void *arg, int irq_idx) if (cb->func) cb->func(cb->arg, irq_idx); spin_unlock_irqrestore(&dpu_kms->irq_obj.cb_lock, irq_flags); - - /* - * Clear pending interrupt status in HW. - * NOTE: dpu_core_irq_callback_handler is protected by top-level - * spinlock, so it is safe to clear any interrupt status here. - */ - dpu_kms->hw_intr->ops.clear_intr_status_nolock( - dpu_kms->hw_intr, - irq_idx); } int dpu_core_irq_idx_lookup(struct dpu_kms *dpu_kms, diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c index a8d463a8e8fe..3d48ad69c901 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c @@ -771,6 +771,22 @@ static int dpu_hw_intr_irqidx_lookup(enum dpu_intr_type intr_type, return -EINVAL; } +static void dpu_hw_intr_clear_intr_status_nolock(struct dpu_hw_intr *intr, + int irq_idx) +{ + int reg_idx; + + if (!intr) + return; + + reg_idx = dpu_irq_map[irq_idx].reg_idx; + DPU_REG_WRITE(&intr->hw, dpu_intr_set[reg_idx].clr_off, + dpu_irq_map[irq_idx].irq_mask); + + /* ensure register writes go through */ + wmb(); +} + static void dpu_hw_intr_dispatch_irq(struct dpu_hw_intr *intr, void (*cbfunc)(void *, int), void *arg) @@ -837,9 +853,8 @@ static void dpu_hw_intr_dispatch_irq(struct dpu_hw_intr *intr, */ if (cbfunc) cbfunc(arg, irq_idx); - else - intr->ops.clear_intr_status_nolock( - intr, irq_idx); + + dpu_hw_intr_clear_intr_status_nolock(intr, irq_idx); /* * When callback finish, clear the irq_status @@ -1004,23 +1019,6 @@ static int dpu_hw_intr_disable_irqs(struct dpu_hw_intr *intr) return 0; } - -static void dpu_hw_intr_clear_intr_status_nolock(struct dpu_hw_intr *intr, - int irq_idx) -{ - int reg_idx; - - if (!intr) - return; - - reg_idx = dpu_irq_map[irq_idx].reg_idx; - DPU_REG_WRITE(&intr->hw, dpu_intr_set[reg_idx].clr_off, - dpu_irq_map[irq_idx].irq_mask); - - /* ensure register writes go through */ - wmb(); -} - static u32 dpu_hw_intr_get_interrupt_status(struct dpu_hw_intr *intr, int irq_idx, bool clear) { @@ -1062,7 +1060,6 @@ static void __setup_intr_ops(struct dpu_hw_intr_ops *ops) ops->dispatch_irqs = dpu_hw_intr_dispatch_irq; ops->clear_all_irqs = dpu_hw_intr_clear_irqs; ops->disable_all_irqs = dpu_hw_intr_disable_irqs; - ops->clear_intr_status_nolock = dpu_hw_intr_clear_intr_status_nolock; ops->get_interrupt_status = dpu_hw_intr_get_interrupt_status; } diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h index d8b9d5fe6b8c..8d005687b265 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h @@ -141,15 +141,6 @@ struct dpu_hw_intr_ops { void (*cbfunc)(void *arg, int irq_idx), void *arg); - /** - * clear_intr_status_nolock() - clears the HW interrupts without lock - * @intr: HW interrupt handle - * @irq_idx: Lookup irq index return from irq_idx_lookup - */ - void (*clear_intr_status_nolock)( - struct dpu_hw_intr *intr, - int irq_idx); - /** * get_interrupt_status - Gets HW interrupt status, and clear if set, * based on given lookup IRQ index. -- 2.30.2