From patchwork Thu Feb 16 09:41:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 13142780 X-Patchwork-Delegate: kieran@bingham.xyz 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 AFB61C61DA4 for ; Thu, 16 Feb 2023 09:42:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230117AbjBPJmo (ORCPT ); Thu, 16 Feb 2023 04:42:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50142 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229990AbjBPJm3 (ORCPT ); Thu, 16 Feb 2023 04:42:29 -0500 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D76B441097; Thu, 16 Feb 2023 01:41:38 -0800 (PST) Received: from desky.lan (91-154-32-225.elisa-laajakaista.fi [91.154.32.225]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 72DF910B; Thu, 16 Feb 2023 10:41:36 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1676540496; bh=Q0S64d9vQMYDFO/7cgnm2yubJSea0v1pDF/7puW+XZQ=; h=From:To:Cc:Subject:Date:From; b=DOnSDXfAZqT2dzuEMocGAS8JBQ5Y5A+AZiGN3DWHv2Bw9OV2fZFY+PV81Ej4I4Uum MtXerWTXqNH94KBb/k6Bli2lOSHyRHERF79mqucxAMq7kxQu2/S7AP+OhnnY5vOVda 9vRCQHVnvQOBCj3iB2GXRJZolr9JwWy2fuTpEjqo= From: Tomi Valkeinen To: Laurent Pinchart , linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org Cc: Tomi Valkeinen , Laurent Pinchart Subject: [PATCH v4] media: renesas: vsp1: Add underrun debug print Date: Thu, 16 Feb 2023 11:41:15 +0200 Message-Id: <20230216094115.151189-1-tomi.valkeinen+renesas@ideasonboard.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Print underrun interrupts with ratelimited print. Note that we don't enable the underrun interrupt. If we have underruns, we don't want to get flooded with interrupts about them. It's enough to see that an underrun happened at the end of a frame. Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart Reviewed-by: Laurent Pinchart --- Changes in v4: - Store underrun count in pipe drivers/media/platform/renesas/vsp1/vsp1_drm.c | 3 +++ drivers/media/platform/renesas/vsp1/vsp1_drv.c | 11 ++++++++++- drivers/media/platform/renesas/vsp1/vsp1_pipe.h | 2 ++ drivers/media/platform/renesas/vsp1/vsp1_regs.h | 2 ++ 4 files changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/renesas/vsp1/vsp1_drm.c b/drivers/media/platform/renesas/vsp1/vsp1_drm.c index c6f25200982c..5da1bc991750 100644 --- a/drivers/media/platform/renesas/vsp1/vsp1_drm.c +++ b/drivers/media/platform/renesas/vsp1/vsp1_drm.c @@ -710,6 +710,9 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index, return 0; } + /* Reset the underrun counter */ + pipe->underrun_count = 0; + drm_pipe->width = cfg->width; drm_pipe->height = cfg->height; pipe->interlaced = cfg->interlaced; diff --git a/drivers/media/platform/renesas/vsp1/vsp1_drv.c b/drivers/media/platform/renesas/vsp1/vsp1_drv.c index 5710152d6511..ab8209e5b07a 100644 --- a/drivers/media/platform/renesas/vsp1/vsp1_drv.c +++ b/drivers/media/platform/renesas/vsp1/vsp1_drv.c @@ -45,7 +45,8 @@ static irqreturn_t vsp1_irq_handler(int irq, void *data) { - u32 mask = VI6_WPF_IRQ_STA_DFE | VI6_WPF_IRQ_STA_FRE; + u32 mask = VI6_WPF_IRQ_STA_DFE | VI6_WPF_IRQ_STA_FRE | + VI6_WPF_IRQ_STA_UND; struct vsp1_device *vsp1 = data; irqreturn_t ret = IRQ_NONE; unsigned int i; @@ -60,6 +61,14 @@ static irqreturn_t vsp1_irq_handler(int irq, void *data) status = vsp1_read(vsp1, VI6_WPF_IRQ_STA(i)); vsp1_write(vsp1, VI6_WPF_IRQ_STA(i), ~status & mask); + if ((status & VI6_WPF_IRQ_STA_UND) && wpf->entity.pipe) { + wpf->entity.pipe->underrun_count++; + + dev_warn_ratelimited(vsp1->dev, + "Underrun occurred at WPF%u (total underruns %u)\n", + i, wpf->entity.pipe->underrun_count); + } + if (status & VI6_WPF_IRQ_STA_DFE) { vsp1_pipeline_frame_end(wpf->entity.pipe); ret = IRQ_HANDLED; diff --git a/drivers/media/platform/renesas/vsp1/vsp1_pipe.h b/drivers/media/platform/renesas/vsp1/vsp1_pipe.h index ae646c9ef337..674b5748d929 100644 --- a/drivers/media/platform/renesas/vsp1/vsp1_pipe.h +++ b/drivers/media/platform/renesas/vsp1/vsp1_pipe.h @@ -148,6 +148,8 @@ struct vsp1_pipeline { unsigned int partitions; struct vsp1_partition *partition; struct vsp1_partition *part_table; + + u32 underrun_count; }; void vsp1_pipeline_reset(struct vsp1_pipeline *pipe); diff --git a/drivers/media/platform/renesas/vsp1/vsp1_regs.h b/drivers/media/platform/renesas/vsp1/vsp1_regs.h index d94343ae57a1..7eca82e0ba7e 100644 --- a/drivers/media/platform/renesas/vsp1/vsp1_regs.h +++ b/drivers/media/platform/renesas/vsp1/vsp1_regs.h @@ -32,10 +32,12 @@ #define VI6_STATUS_SYS_ACT(n) BIT((n) + 8) #define VI6_WPF_IRQ_ENB(n) (0x0048 + (n) * 12) +#define VI6_WPF_IRQ_ENB_UNDE BIT(16) #define VI6_WPF_IRQ_ENB_DFEE BIT(1) #define VI6_WPF_IRQ_ENB_FREE BIT(0) #define VI6_WPF_IRQ_STA(n) (0x004c + (n) * 12) +#define VI6_WPF_IRQ_STA_UND BIT(16) #define VI6_WPF_IRQ_STA_DFE BIT(1) #define VI6_WPF_IRQ_STA_FRE BIT(0)