From patchwork Thu Sep 10 08:21:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 11767015 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3A8B2618 for ; Thu, 10 Sep 2020 08:25:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 167432075B for ; Thu, 10 Sep 2020 08:25:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="mVeJpvz+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730374AbgIJIZi (ORCPT ); Thu, 10 Sep 2020 04:25:38 -0400 Received: from Mailgw01.mediatek.com ([1.203.163.78]:2671 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1730393AbgIJIYi (ORCPT ); Thu, 10 Sep 2020 04:24:38 -0400 X-UUID: 4d03c4db00bb4a5e8236d13890d71c84-20200910 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=F4mzGda76Rx36DNHSGEKqplD8yql9lIdY7JyMYhES0w=; b=mVeJpvz+f1x62p2saZatnh61UwBArI54BYT7HBIyxwmappQKZ1QuRXs9NIH+JatHQNZBtZOn7seayfT1q8ExdfmYGJZevsqgworTA5J/GN26qfrq6mWCLaeYoAPqApJkbjlHRaVk0D9y59br5g8E0GAF+HL/mrQAYfC24Viftvc=; X-UUID: 4d03c4db00bb4a5e8236d13890d71c84-20200910 Received: from mtkcas36.mediatek.inc [(172.27.4.253)] by mailgw01.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 297554876; Thu, 10 Sep 2020 16:24:04 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by MTKMBS31N2.mediatek.inc (172.27.4.87) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 10 Sep 2020 16:24:04 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 10 Sep 2020 16:24:02 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman CC: Mathias Nyman , Felipe Balbi , Matthias Brugger , Douglas Anderson , Chunfeng Yun , Daniel Thompson , "Eric W. Biederman" , Lee Jones , Sumit Garg , Jann Horn , Arnd Bergmann , Jason Yan , Chuhong Yuan , "Gustavo A. R. Silva" , Ben Dooks , Saurav Girepunje , , , , , Mathias Nyman , Yoshihiro Shimoda Subject: [PATCH RESEND v3 04/11] usb: xhci-rcar: convert to readl_poll_timeout_atomic() Date: Thu, 10 Sep 2020 16:21:45 +0800 Message-ID: <1599726112-4439-4-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1599726112-4439-1-git-send-email-chunfeng.yun@mediatek.com> References: <1599726112-4439-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: D551D691DB25F07A367A51FC77988420B16EE09204599E6579A68152A513AEC42000:8 X-MTK: N Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Use readl_poll_timeout_atomic() to simplify code Cc: Mathias Nyman Cc: Yoshihiro Shimoda Signed-off-by: Chunfeng Yun --- v2~v3: no changes --- drivers/usb/host/xhci-rcar.c | 43 ++++++++++++------------------------------- 1 file changed, 12 insertions(+), 31 deletions(-) diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c index c1025d3..74f836f 100644 --- a/drivers/usb/host/xhci-rcar.c +++ b/drivers/usb/host/xhci-rcar.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -127,8 +128,7 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd) void __iomem *regs = hcd->regs; struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd); const struct firmware *fw; - int retval, index, j, time; - int timeout = 10000; + int retval, index, j; u32 data, val, temp; u32 quirks = 0; const struct soc_device_attribute *attr; @@ -166,32 +166,19 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd) temp |= RCAR_USB3_DL_CTRL_FW_SET_DATA0; writel(temp, regs + RCAR_USB3_DL_CTRL); - for (time = 0; time < timeout; time++) { - val = readl(regs + RCAR_USB3_DL_CTRL); - if ((val & RCAR_USB3_DL_CTRL_FW_SET_DATA0) == 0) - break; - udelay(1); - } - if (time == timeout) { - retval = -ETIMEDOUT; + retval = readl_poll_timeout_atomic(regs + RCAR_USB3_DL_CTRL, + val, !(val & RCAR_USB3_DL_CTRL_FW_SET_DATA0), + 1, 10000); + if (retval < 0) break; - } } temp = readl(regs + RCAR_USB3_DL_CTRL); temp &= ~RCAR_USB3_DL_CTRL_ENABLE; writel(temp, regs + RCAR_USB3_DL_CTRL); - for (time = 0; time < timeout; time++) { - val = readl(regs + RCAR_USB3_DL_CTRL); - if (val & RCAR_USB3_DL_CTRL_FW_SUCCESS) { - retval = 0; - break; - } - udelay(1); - } - if (time == timeout) - retval = -ETIMEDOUT; + retval = readl_poll_timeout_atomic((regs + RCAR_USB3_DL_CTRL), + val, (val & RCAR_USB3_DL_CTRL_FW_SUCCESS), 1, 10000); release_firmware(fw); @@ -200,18 +187,12 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd) static bool xhci_rcar_wait_for_pll_active(struct usb_hcd *hcd) { - int timeout = 1000; + int retval; u32 val, mask = RCAR_USB3_AXH_STA_PLL_ACTIVE_MASK; - while (timeout > 0) { - val = readl(hcd->regs + RCAR_USB3_AXH_STA); - if ((val & mask) == mask) - return true; - udelay(1); - timeout--; - } - - return false; + retval = readl_poll_timeout_atomic(hcd->regs + RCAR_USB3_AXH_STA, + val, ((val & mask) == mask), 1, 1000); + return !!retval; } /* This function needs to initialize a "phy" of usb before */