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 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 9E2B5C25B4F for ; Mon, 6 May 2024 14:52:02 +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:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=o3TbxUiMrDUCby6MMAjOKYcUQrK03+JMGLqieOlb8P8=; b=UIqoeUTZNLIijg rOcbJy7VdYO3HxPPV20wCQAfJ3AuN2WvbxOoQ/XfYYJkUMVYcpBhqHp2PsTLGryAyGBGYzIdVa9uQ 7eRNnm9HZuG8WbYrpKqS1ZMoc5g3taeLQXesMtFncgWcr8PjLXCgmUXsFEoKYda78vTdbIRmQFNux UmX1FOCxgWfSjbvhfxoaSoeKiE0S4THTX5hn8Q1nm1LAtK0tO5v4GvjrhC/dLnTIG6Ft2tn77q7VG UZS70mpl6cMx/dOs2Lsrs2z5vW1M27cEj8RdyQuxl1kZjl3JlJ9XuCqyB+O3fqhit0zqCZpEnCpv0 fKS3vMchpCvEv+Arkc9A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s3zgz-00000007l40-2TE5; Mon, 06 May 2024 14:51:49 +0000 Received: from out-185.mta0.migadu.com ([91.218.175.185]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s3zgv-00000007l22-20HK for linux-arm-kernel@lists.infradead.org; Mon, 06 May 2024 14:51:47 +0000 Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1715007101; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=U8GrcUQlowClA2iRoj1euDYQxhz+hiklndiBkUyOg9A=; b=iA/8VuBfhygfV8H8eY9CJJjdeBDene9JYvUSfuRX7OJInUCUrR7JH14EgIlJrnWvraa54T LsEqO6jhYWi06ZEidIiKOS8RrrlhWhYDXWgjp216mHK7zDvJWs0XlZJC/2t6CzKTNQ5fjP c33ldu3yKYw7Nh7C8WIJ6hMMAbU1jtU= Date: Mon, 6 May 2024 10:51:38 -0400 MIME-Version: 1.0 Subject: Re: [PATCH 3/3] phy: zynqmp: Add debugfs support To: Vinod Koul Cc: Laurent Pinchart , linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org, Michal Simek , linux-arm-kernel@lists.infradead.org, Kishon Vijay Abraham I References: <20240422185803.3575319-1-sean.anderson@linux.dev> <20240422185803.3575319-4-sean.anderson@linux.dev> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Sean Anderson In-Reply-To: X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240506_075145_704780_2AB70FF9 X-CRM114-Status: GOOD ( 16.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 5/4/24 07:58, Vinod Koul wrote: > On 22-04-24, 14:58, Sean Anderson wrote: >> Add support for printing some basic status information to debugfs. This >> is helpful when debugging phy consumers to make sure they are configuring >> the phy appropriately. >> >> Signed-off-by: Sean Anderson >> --- >> >> drivers/phy/xilinx/phy-zynqmp.c | 54 +++++++++++++++++++++++++++++++++ >> 1 file changed, 54 insertions(+) >> >> diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqmp.c >> index 08c88dcd7799..e2e86943e9f3 100644 >> --- a/drivers/phy/xilinx/phy-zynqmp.c >> +++ b/drivers/phy/xilinx/phy-zynqmp.c >> @@ -13,6 +13,7 @@ >> */ >> >> #include >> +#include >> #include >> #include >> #include >> @@ -122,6 +123,15 @@ >> #define ICM_PROTOCOL_DP 0x4 >> #define ICM_PROTOCOL_SGMII 0x5 >> >> +static const char *const xpsgtr_icm_str[] = { >> + [ICM_PROTOCOL_PD] = "powered down", >> + [ICM_PROTOCOL_PCIE] = "PCIe", >> + [ICM_PROTOCOL_SATA] = "SATA", >> + [ICM_PROTOCOL_USB] = "USB", >> + [ICM_PROTOCOL_DP] = "DisplayPort", >> + [ICM_PROTOCOL_SGMII] = "SGMII", >> +}; >> + >> /* Test Mode common reset control parameters */ >> #define TM_CMN_RST 0x10018 >> #define TM_CMN_RST_EN 0x1 >> @@ -768,6 +778,48 @@ static struct phy *xpsgtr_xlate(struct device *dev, >> return ERR_PTR(-EINVAL); >> } >> >> +/* >> + * DebugFS >> + */ >> + >> +static int xpsgtr_status_read(struct seq_file *seq, void *data) >> +{ >> + struct xpsgtr_phy *gtr_phy = seq->private; >> + struct clk *clk; >> + u32 pll_status; >> + >> + mutex_lock(>r_phy->phy->mutex); >> + pll_status = xpsgtr_read_phy(gtr_phy, L0_PLL_STATUS_READ_1); >> + clk = gtr_phy->dev->clk[gtr_phy->refclk]; >> + >> + seq_printf(seq, "Lane: %u\n", gtr_phy->lane); >> + seq_printf(seq, "Protocol: %s\n", >> + xpsgtr_icm_str[gtr_phy->protocol]); >> + seq_printf(seq, "Instance: %u\n", gtr_phy->instance); >> + seq_printf(seq, "Reference clock: %u (%pC)\n", gtr_phy->refclk, clk); >> + seq_printf(seq, "Reference rate: %lu\n", clk_get_rate(clk)); >> + seq_printf(seq, "PLL locked: %s\n", >> + pll_status & PLL_STATUS_LOCKED ? "yes" : "no"); >> + >> + mutex_unlock(>r_phy->phy->mutex); >> + return 0; >> +} >> + >> +static int xpsgtr_status_open(struct inode *inode, struct file *f) >> +{ >> + struct xpsgtr_phy *gtr_phy = inode->i_private; >> + >> + return single_open(f, xpsgtr_status_read, gtr_phy); >> +} >> + >> +static const struct file_operations xpsgtr_status_ops = { >> + .owner = THIS_MODULE, >> + .open = xpsgtr_status_open, >> + .release = single_release, >> + .read = seq_read, >> + .llseek = seq_lseek >> +}; > > There are debugfs simple helpers which should help you avoid all this > open coding and just have the read call I assume you mean debugfs_create_devm_seqfile. >> + >> /* >> * Power Management >> */ >> @@ -917,6 +969,8 @@ static int xpsgtr_probe(struct platform_device *pdev) >> >> gtr_phy->phy = phy; >> phy_set_drvdata(phy, gtr_phy); >> + debugfs_create_file("status", 0444, phy->debugfs, gtr_phy, >> + &xpsgtr_status_ops); > > generic status does not make sense, how about device-name-status This file lives in the phy's debugfs directory already. The full path is /sys/kernel/debug/phy/phy-fd400000.phy.0/status so there is no need to add the phy name yet again. --Sean _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel