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Wed, 26 Aug 2020 17:31:01 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 26 Aug 2020 17:31:00 +0800 From: Chunfeng Yun To: Bin Meng , Marek Vasut CC: , GSS_MTK_Uboot_upstream , Frank Wunderlich , Tom Rini , Ryder Lee , Weijie Gao , Simon Glass , Chunfeng Yun Subject: [PATCH RESEND v2 11/11] usb: xhci: convert to readx_poll_sleep_timeout() Date: Wed, 26 Aug 2020 17:29:21 +0800 Message-ID: <1598434161-10272-11-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1598434161-10272-1-git-send-email-chunfeng.yun@mediatek.com> References: <1598434161-10272-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean Use readx_poll_sleep_timeout() to poll the register status Change-Id: If05a68baf52c54ab30029279e349be6076f1d0ca Signed-off-by: Chunfeng Yun --- v2: fix typo of title suggested by Frank --- drivers/usb/host/xhci.c | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index fe30101..3547a9b 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT @@ -143,23 +144,19 @@ struct xhci_ctrl *xhci_get_ctrl(struct usb_device *udev) * @param usec time to wait till * @return 0 if handshake is success else < 0 on failure */ -static int handshake(uint32_t volatile *ptr, uint32_t mask, - uint32_t done, int usec) +static int +handshake(uint32_t volatile *ptr, uint32_t mask, uint32_t done, int usec) { uint32_t result; + int ret; + + ret = readx_poll_sleep_timeout(xhci_readl, ptr, result, + (result & mask) == done || result == U32_MAX, + 1, usec); + if (result == U32_MAX) /* card removed */ + return -ENODEV; - do { - result = xhci_readl(ptr); - if (result == ~(uint32_t)0) - return -ENODEV; - result &= mask; - if (result == done) - return 0; - usec--; - udelay(1); - } while (usec > 0); - - return -ETIMEDOUT; + return ret; } /**