From patchwork Thu Jan 23 13:12:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sibi Sankar X-Patchwork-Id: 11347783 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 909F217EF for ; Thu, 23 Jan 2020 13:12:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E9F424676 for ; Thu, 23 Jan 2020 13:12:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="IoKoxkZT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727022AbgAWNM6 (ORCPT ); Thu, 23 Jan 2020 08:12:58 -0500 Received: from mail26.static.mailgun.info ([104.130.122.26]:52010 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726227AbgAWNM6 (ORCPT ); Thu, 23 Jan 2020 08:12:58 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1579785177; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=3ha1rS6O3ZwlH4JO8Y0j7JhpciqYdmBECeTyfGJObso=; b=IoKoxkZTs+f7MluvUeNdWpvMBoO7sYp5CFaCLLbIqEHDwUBDmqWGiPyHhzz/VemxwNEzFJfv qBnuhwYsh1BJkvnKrdkiuIUn40hjlP5Z9M7KeP6Ve0R/dSHDS06kjCNshNrzHg2aq6SgZiQp JG9M/EDc6fPfqQk0wAzMInID9Vc= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e299bd9.7f02ce420420-smtp-out-n02; Thu, 23 Jan 2020 13:12:57 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 59AADC4479F; Thu, 23 Jan 2020 13:12:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from blr-ubuntu-87.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sibis) by smtp.codeaurora.org (Postfix) with ESMTPSA id E7C6BC433CB; Thu, 23 Jan 2020 13:12:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E7C6BC433CB Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=sibis@codeaurora.org From: Sibi Sankar To: bjorn.andersson@linaro.org, evgreen@chromium.org, p.zabel@pengutronix.de Cc: ohad@wizery.com, linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, agross@kernel.org, Sibi Sankar Subject: [PATCH v2 1/2] remoteproc: qcom: q6v5-mss: Use regmap_read_poll_timeout Date: Thu, 23 Jan 2020 18:42:35 +0530 Message-Id: <20200123131236.1078-2-sibis@codeaurora.org> X-Mailer: git-send-email 2.22.1 In-Reply-To: <20200123131236.1078-1-sibis@codeaurora.org> References: <20200123131236.1078-1-sibis@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Replace the loop for HALT_ACK detection with regmap_read_poll_timeout. Signed-off-by: Sibi Sankar Reviewed-by: Evan Green --- drivers/remoteproc/qcom_q6v5_mss.c | 27 +++++++-------------------- 1 file changed, 7 insertions(+), 20 deletions(-) diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index 899ed769a343b..89ab96c21a44a 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -72,7 +72,8 @@ #define NAV_AXI_HALTACK_BIT BIT(1) #define NAV_AXI_IDLE_BIT BIT(2) -#define HALT_ACK_TIMEOUT_MS 100 +#define HALT_ACK_TIMEOUT_US 100000 +#define NAV_HALT_ACK_TIMEOUT_US 200 /* QDSP6SS_RESET */ #define Q6SS_STOP_CORE BIT(0) @@ -716,7 +717,6 @@ static void q6v5proc_halt_axi_port(struct q6v5 *qproc, struct regmap *halt_map, u32 offset) { - unsigned long timeout; unsigned int val; int ret; @@ -729,14 +729,8 @@ static void q6v5proc_halt_axi_port(struct q6v5 *qproc, regmap_write(halt_map, offset + AXI_HALTREQ_REG, 1); /* Wait for halt */ - timeout = jiffies + msecs_to_jiffies(HALT_ACK_TIMEOUT_MS); - for (;;) { - ret = regmap_read(halt_map, offset + AXI_HALTACK_REG, &val); - if (ret || val || time_after(jiffies, timeout)) - break; - - msleep(1); - } + regmap_read_poll_timeout(halt_map, offset + AXI_HALTACK_REG, val, + val, 1000, HALT_ACK_TIMEOUT_US); ret = regmap_read(halt_map, offset + AXI_IDLE_REG, &val); if (ret || !val) @@ -750,7 +744,6 @@ static void q6v5proc_halt_nav_axi_port(struct q6v5 *qproc, struct regmap *halt_map, u32 offset) { - unsigned long timeout; unsigned int val; int ret; @@ -764,15 +757,9 @@ static void q6v5proc_halt_nav_axi_port(struct q6v5 *qproc, NAV_AXI_HALTREQ_BIT); /* Wait for halt ack*/ - timeout = jiffies + msecs_to_jiffies(HALT_ACK_TIMEOUT_MS); - for (;;) { - ret = regmap_read(halt_map, offset, &val); - if (ret || (val & NAV_AXI_HALTACK_BIT) || - time_after(jiffies, timeout)) - break; - - udelay(5); - } + regmap_read_poll_timeout(halt_map, offset, val, + (val & NAV_AXI_HALTACK_BIT), + 5, NAV_HALT_ACK_TIMEOUT_US); ret = regmap_read(halt_map, offset, &val); if (ret || !(val & NAV_AXI_IDLE_BIT))