From patchwork Wed Oct 16 12:51:11 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Pargmann X-Patchwork-Id: 3052561 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8367C9F2B6 for ; Wed, 16 Oct 2013 12:52:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 701F02047C for ; Wed, 16 Oct 2013 12:52:52 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2B75D2044B for ; Wed, 16 Oct 2013 12:52:51 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWQaN-0005W6-M0; Wed, 16 Oct 2013 12:52:23 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWQaF-0007V8-7A; Wed, 16 Oct 2013 12:52:15 +0000 Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VWQa2-0007Sx-Sm for linux-arm-kernel@lists.infradead.org; Wed, 16 Oct 2013 12:52:04 +0000 Received: from dude.hi.pengutronix.de ([2001:6f8:1178:2:21e:67ff:fe11:9c5c]) by metis.ext.pengutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1VWQZW-0006Lh-17; Wed, 16 Oct 2013 14:51:30 +0200 Received: from mpa by dude.hi.pengutronix.de with local (Exim 4.80) (envelope-from ) id 1VWQZV-0002aQ-GR; Wed, 16 Oct 2013 14:51:29 +0200 From: Markus Pargmann To: Felipe Balbi Subject: [PATCH v3 3/4] usb: musb: dsps, debugfs files Date: Wed, 16 Oct 2013 14:51:11 +0200 Message-Id: <1381927872-8181-4-git-send-email-mpa@pengutronix.de> X-Mailer: git-send-email 1.8.4.rc3 In-Reply-To: <1381927872-8181-1-git-send-email-mpa@pengutronix.de> References: <1381927872-8181-1-git-send-email-mpa@pengutronix.de> X-SA-Exim-Connect-IP: 2001:6f8:1178:2:21e:67ff:fe11:9c5c X-SA-Exim-Mail-From: mpa@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131016_085203_328452_922DD12A X-CRM114-Status: GOOD ( 15.63 ) X-Spam-Score: -2.4 (--) Cc: Markus Pargmann , Bin Liu , linux-usb@vger.kernel.org, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP debugfs files to show the contents of important dsps registers. Signed-off-by: Markus Pargmann --- drivers/usb/musb/musb_dsps.c | 55 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index 189e52c..0680f0e 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -46,6 +46,8 @@ #include #include +#include + #include "musb_core.h" static const struct of_device_id musb_dsps_of_match[]; @@ -119,6 +121,27 @@ struct dsps_glue { const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ struct timer_list timer; /* otg_workaround timer */ unsigned long last_timer; /* last timer data for each instance */ + + struct debugfs_regset32 regset; + struct dentry *dbgfs_root; +}; + +static const struct debugfs_reg32 dsps_musb_regs[] = { + { "revision", 0x00 }, + { "control", 0x14 }, + { "status", 0x18 }, + { "eoi", 0x24 }, + { "intr0_stat", 0x30 }, + { "intr1_stat", 0x34 }, + { "intr0_set", 0x38 }, + { "intr1_set", 0x3c }, + { "txmode", 0x70 }, + { "rxmode", 0x74 }, + { "autoreq", 0xd0 }, + { "srpfixtime", 0xd4 }, + { "tdown", 0xd8 }, + { "phy_utmi", 0xe0 }, + { "mode", 0xe8 }, }; /** @@ -348,6 +371,30 @@ out: return ret; } +static int dsps_musb_dbg_init(struct musb *musb, struct dsps_glue *glue) +{ + struct dentry *root; + struct dentry *file; + char buf[128]; + + sprintf(buf, "%s.dsps", dev_name(musb->controller)); + root = debugfs_create_dir(buf, NULL); + if (!root) + return -ENOMEM; + glue->dbgfs_root = root; + + glue->regset.regs = dsps_musb_regs; + glue->regset.nregs = ARRAY_SIZE(dsps_musb_regs); + glue->regset.base = musb->ctrl_base; + + file = debugfs_create_regset32("regdump", S_IRUGO, root, &glue->regset); + if (!file) { + debugfs_remove_recursive(root); + return -ENOMEM; + } + return 0; +} + static int dsps_musb_init(struct musb *musb) { struct device *dev = musb->controller; @@ -357,6 +404,7 @@ static int dsps_musb_init(struct musb *musb) void __iomem *reg_base; struct resource *r; u32 rev, val; + int ret; r = platform_get_resource_byname(parent, IORESOURCE_MEM, "control"); if (!r) @@ -390,6 +438,10 @@ static int dsps_musb_init(struct musb *musb) val &= ~(1 << wrp->otg_disable); dsps_writel(musb->ctrl_base, wrp->phy_utmi, val); + ret = dsps_musb_dbg_init(musb, glue); + if (ret) + return ret; + return 0; } @@ -587,6 +639,9 @@ static int dsps_remove(struct platform_device *pdev) pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); kfree(glue); + + debugfs_remove_recursive(glue->dbgfs_root); + return 0; }