From patchwork Thu Apr 21 23:42:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Laurent Pinchart X-Patchwork-Id: 564659 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 A7C33C433EF for ; Thu, 21 Apr 2022 23:43:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1442680AbiDUXp5 (ORCPT ); Thu, 21 Apr 2022 19:45:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44650 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1442670AbiDUXp4 (ORCPT ); Thu, 21 Apr 2022 19:45:56 -0400 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 474D93EBB5 for ; Thu, 21 Apr 2022 16:43:03 -0700 (PDT) Received: from pendragon.lan (62-78-145-57.bb.dnainternet.fi [62.78.145.57]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id C71A9596; Fri, 22 Apr 2022 01:42:52 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1650584573; bh=pirSyBFOL31RVkRImTODXcoQGNtpBs867Kg/KPIRbIc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=q5UdeoZOmwlxf0WXkHIkQhKKmz8gi5vGyTRVhTm2lVw1GLfA1hY6xBWPaPxzJ+iv/ AoOFJ/be0vBQwKWxCv9zSMw5usHikuI0i5rpOFSCa12I/z01vhujGiEnfVtHwsn//M 4vdIj4gZGpaFxQY6vspoFBhwXSkbCCfGlzBd2wEs= 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 v4 14/21] media: rkisp1: debug: Collect input status by sampling ISP_FLAGS_SHD Date: Fri, 22 Apr 2022 02:42:33 +0300 Message-Id: <20220421234240.1694-15-laurent.pinchart@ideasonboard.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220421234240.1694-1-laurent.pinchart@ideasonboard.com> References: <20220421234240.1694-1-laurent.pinchart@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.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 --- Changes since v3: - Fix pm_runtime_get_if_in_use() return value handling Changes since v2: - Handle runtime PM --- .../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..782a696ac587 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 <= 0) + return ret ? : -ENODATA; + + /* 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 a93d0127b813..2b322db97252 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)