From patchwork Sat Mar 19 16:30:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 12786217 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2D6ECC433FE for ; Sat, 19 Mar 2022 16:31:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=SF7Qz6cbuZ8dIR4CdJfPfr4v1zGQgtiXRtnWd2umR/w=; b=w+gfe6cFS6ubfd N4CwjXxfHIf8jNQS9udGOdQJCjviSFp4bUdG9Ltc0a3ih0HBpG2dSuyYPzthAJK0CHgRR1afz1CWO rFL5yAjGniSxAWG9bu5jj/QkAsmR9KfKiQSrP5eFwdqUU2yx8aVznGBBxOSsEsmi0XfVxAcNVz8l0 D45uNem44jVJBVIh8rT1Ul4SVxFP04rvFYseFiTy3SwxfsP5nqeWB63+6F6VheBYZlkmSxIEPo3yP /OeyjVUHfsilOZW4B87yHJ9WRwBVnnb6EHywCRQaz+pMuFEzwro6lLcJu6TjjL9in8XfhyLLZVp26 zExTroo9fFpZ1f3OICSg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nVbzc-00434N-Um; Sat, 19 Mar 2022 16:31:52 +0000 Received: from perceval.ideasonboard.com ([213.167.242.64]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nVbzN-0042nO-Dc for linux-rockchip@lists.infradead.org; Sat, 19 Mar 2022 16:31:40 +0000 Received: from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 838D42A3B; Sat, 19 Mar 2022 17:31:35 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1647707496; bh=DgRyLyC84z9xb+1Wn+4aphEWvW/8cvmGvq0UZRzEwH8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VCHmxvkepmZtEyhaR+je82lUY6iXW41E+38eRoHqTPAo5HkyCm0ZmNMJs2PPaqPGe zJBKafIS5qhk/2eVk9lDbqQbf5J/9E5OyYUHTwc9JDPnsvzSahukG4xzRvS+F0tdCV xSIP/Jle//V7ZbJW8xP8mmZZ2+NIIWgiS9QqDpdE= From: Laurent Pinchart To: linux-media@vger.kernel.org Cc: Dafna Hirschfeld , Heiko Stuebner , Paul Elder , Tomasz Figa , linux-rockchip@lists.infradead.org Subject: [PATCH v3 14/17] media: rkisp1: debug: Collect input status by sampling ISP_FLAGS_SHD Date: Sat, 19 Mar 2022 18:30:57 +0200 Message-Id: <20220319163100.3083-15-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220319163100.3083-1-laurent.pinchart@ideasonboard.com> References: <20220319163100.3083-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220319_093137_678402_0C55568D X-CRM114-Status: GOOD ( 14.70 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The ISP_FLAGS_SHD register exposes the ISP parallel input signals (data and synchronization) in real time. This can help debugging when the device doesn't output any image. Sample the register 10000 times with a 1µs delay and expose the result through debugfs. Signed-off-by: Laurent Pinchart Signed-off-by: Paul Elder --- .../platform/rockchip/rkisp1/rkisp1-debug.c | 54 +++++++++++++++++++ .../platform/rockchip/rkisp1/rkisp1-regs.h | 9 ++++ 2 files changed, 63 insertions(+) diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c index 64b33774cbdf..da3ed0ab697a 100644 --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c @@ -9,9 +9,61 @@ */ #include +#include #include +#include +#include #include "rkisp1-common.h" +#include "rkisp1-regs.h" + +#define RKISP1_DEBUG_DATA_COUNT_BINS 32 +#define RKISP1_DEBUG_DATA_COUNT_STEP (4096 / RKISP1_DEBUG_DATA_COUNT_BINS) + +static int rkisp1_debug_input_status_show(struct seq_file *m, void *p) +{ + struct rkisp1_device *rkisp1 = m->private; + u16 data_count[RKISP1_DEBUG_DATA_COUNT_BINS] = { }; + unsigned int hsync_count = 0; + unsigned int vsync_count = 0; + unsigned int i; + u32 data; + u32 val; + int ret; + + ret = pm_runtime_get_if_in_use(rkisp1->dev); + if (ret) + return ret; + + /* Sample the ISP input port status 10000 times with a 1µs interval. */ + for (i = 0; i < 10000; ++i) { + val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_FLAGS_SHD); + + data = (val & RKISP1_CIF_ISP_FLAGS_SHD_S_DATA_MASK) + >> RKISP1_CIF_ISP_FLAGS_SHD_S_DATA_SHIFT; + data_count[data / RKISP1_DEBUG_DATA_COUNT_STEP]++; + + if (val & RKISP1_CIF_ISP_FLAGS_SHD_S_HSYNC) + hsync_count++; + if (val & RKISP1_CIF_ISP_FLAGS_SHD_S_VSYNC) + vsync_count++; + + udelay(1); + } + + pm_runtime_put(rkisp1->dev); + + seq_printf(m, "vsync: %u, hsync: %u\n", vsync_count, hsync_count); + seq_puts(m, "data:\n"); + for (i = 0; i < ARRAY_SIZE(data_count); ++i) + seq_printf(m, "- [%04u:%04u]: %u\n", + i * RKISP1_DEBUG_DATA_COUNT_STEP, + (i + 1) * RKISP1_DEBUG_DATA_COUNT_STEP - 1, + data_count[i]); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(rkisp1_debug_input_status); void rkisp1_debug_init(struct rkisp1_device *rkisp1) { @@ -42,6 +94,8 @@ void rkisp1_debug_init(struct rkisp1_device *rkisp1) &debug->frame_drop[RKISP1_MAINPATH]); debugfs_create_ulong("sp_frame_drop", 0444, debug->debugfs_dir, &debug->frame_drop[RKISP1_SELFPATH]); + debugfs_create_file("input_status", 0444, debug->debugfs_dir, rkisp1, + &rkisp1_debug_input_status_fops); } void rkisp1_debug_cleanup(struct rkisp1_device *rkisp1) diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-regs.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-regs.h index 083d92ada73f..447c5f241d69 100644 --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-regs.h +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-regs.h @@ -454,6 +454,15 @@ #define RKISP1_CIF_ISP_DEMOSAIC_BYPASS BIT(10) #define RKISP1_CIF_ISP_DEMOSAIC_TH(x) ((x) & 0xFF) +/* ISP_FLAGS_SHD */ +#define RKISP1_CIF_ISP_FLAGS_SHD_ISP_ENABLE_SHD BIT(0) +#define RKISP1_CIF_ISP_FLAGS_SHD_ISP_ENABLE_INFORM_SHD BIT(1) +#define RKISP1_CIF_ISP_FLAGS_SHD_INFORM_FIELD BIT(2) +#define RKISP1_CIF_ISP_FLAGS_SHD_S_DATA_MASK GENMASK(27, 16) +#define RKISP1_CIF_ISP_FLAGS_SHD_S_DATA_SHIFT 16 +#define RKISP1_CIF_ISP_FLAGS_SHD_S_VSYNC BIT(30) +#define RKISP1_CIF_ISP_FLAGS_SHD_S_HSYNC BIT(31) + /* AWB */ /* ISP_AWB_PROP */ #define RKISP1_CIF_ISP_AWB_YMAX_CMP_EN BIT(2)