From patchwork Fri Jan 17 13:51:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sibi Sankar X-Patchwork-Id: 11339199 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 CC0416C1 for ; Fri, 17 Jan 2020 13:51:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A182A2082F for ; Fri, 17 Jan 2020 13:51:56 +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="GHbmoo+L" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728928AbgAQNvz (ORCPT ); Fri, 17 Jan 2020 08:51:55 -0500 Received: from mail26.static.mailgun.info ([104.130.122.26]:47190 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728913AbgAQNvz (ORCPT ); Fri, 17 Jan 2020 08:51:55 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1579269114; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=AxuWgrzG90ZthftQ+DLM+LUe/P9hM/saP5os2D5mfEY=; b=GHbmoo+LvWIBgSIMPZYyVlFE/HfIf3l6KinEiYBC99CdTgx4gNljJLIkKvn/2nEuYpppn4Cd I8Sr9nXg7HDujpXzSJojMM/9qakqNRmy00BchmW2HYqUiPYMASEh8hKfGChgmvy+yHFLvUkc AhrbAGIq7iu9HkATgsLKLI13kXI= 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 5e21bbf8.7fd2fc92a458-smtp-out-n01; Fri, 17 Jan 2020 13:51:52 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id A0969C447AD; Fri, 17 Jan 2020 13:51:52 +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 81D7FC447A5; Fri, 17 Jan 2020 13:51:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 81D7FC447A5 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 2/4] remoteproc: qcom: q6v5-mss: Improve readability across clk handling Date: Fri, 17 Jan 2020 19:21:28 +0530 Message-Id: <20200117135130.3605-3-sibis@codeaurora.org> X-Mailer: git-send-email 2.22.1 In-Reply-To: <20200117135130.3605-1-sibis@codeaurora.org> References: <20200117135130.3605-1-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 Define CLKEN and CLKOFF for improving readability of Q6SS clock handling. Signed-off-by: Sibi Sankar Reviewed-by: Evan Green --- drivers/remoteproc/qcom_q6v5_mss.c | 32 +++++++++++++++++------------- 1 file changed, 18 insertions(+), 14 deletions(-) diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index f20b39c6ff0ed..e1784446d3da3 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -80,6 +80,11 @@ #define Q6SS_CORE_ARES BIT(1) #define Q6SS_BUS_ARES_ENABLE BIT(2) +/* QDSP6SS CBCR */ +#define Q6SS_CBCR_CLKEN BIT(0) +#define Q6SS_CBCR_CLKOFF BIT(31) +#define Q6SS_CBCR_TIMEOUT_US 200 + /* QDSP6SS_GFMUX_CTL */ #define Q6SS_CLK_ENABLE BIT(1) @@ -100,7 +105,6 @@ #define QDSP6v56_BHS_ON BIT(24) #define QDSP6v56_CLAMP_WL BIT(21) #define QDSP6v56_CLAMP_QMC_MEM BIT(22) -#define HALT_CHECK_MAX_LOOPS 200 #define QDSP6SS_XO_CBCR 0x0038 #define QDSP6SS_ACC_OVERRIDE_VAL 0x20 @@ -502,12 +506,12 @@ static int q6v5proc_reset(struct q6v5 *qproc) if (qproc->version == MSS_SDM845) { val = readl(qproc->reg_base + QDSP6SS_SLEEP); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_SLEEP); ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_SLEEP, - val, !(val & BIT(31)), 1, - SLEEP_CHECK_MAX_LOOPS); + val, !(val & Q6SS_CBCR_CLKOFF), 1, + Q6SS_CBCR_TIMEOUT_US); if (ret) { dev_err(qproc->dev, "QDSP6SS Sleep clock timed out\n"); return -ETIMEDOUT; @@ -530,12 +534,12 @@ static int q6v5proc_reset(struct q6v5 *qproc) goto pbl_wait; } else if (qproc->version == MSS_SC7180) { val = readl(qproc->reg_base + QDSP6SS_SLEEP); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_SLEEP); ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_SLEEP, - val, !(val & BIT(31)), 1, - SLEEP_CHECK_MAX_LOOPS); + val, !(val & Q6SS_CBCR_CLKOFF), 1, + Q6SS_CBCR_TIMEOUT_US); if (ret) { dev_err(qproc->dev, "QDSP6SS Sleep clock timed out\n"); return -ETIMEDOUT; @@ -543,12 +547,12 @@ static int q6v5proc_reset(struct q6v5 *qproc) /* Turn on the XO clock needed for PLL setup */ val = readl(qproc->reg_base + QDSP6SS_XO_CBCR); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_XO_CBCR); ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_XO_CBCR, - val, !(val & BIT(31)), 1, - SLEEP_CHECK_MAX_LOOPS); + val, !(val & Q6SS_CBCR_CLKOFF), 1, + Q6SS_CBCR_TIMEOUT_US); if (ret) { dev_err(qproc->dev, "QDSP6SS XO clock timed out\n"); return -ETIMEDOUT; @@ -556,7 +560,7 @@ static int q6v5proc_reset(struct q6v5 *qproc) /* Configure Q6 core CBCR to auto-enable after reset sequence */ val = readl(qproc->reg_base + QDSP6SS_CORE_CBCR); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_CORE_CBCR); /* De-assert the Q6 stop core signal */ @@ -591,13 +595,13 @@ static int q6v5proc_reset(struct q6v5 *qproc) /* BHS require xo cbcr to be enabled */ val = readl(qproc->reg_base + QDSP6SS_XO_CBCR); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_XO_CBCR); /* Read CLKOFF bit to go low indicating CLK is enabled */ ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_XO_CBCR, - val, !(val & BIT(31)), 1, - HALT_CHECK_MAX_LOOPS); + val, !(val & Q6SS_CBCR_CLKOFF), 1, + Q6SS_CBCR_TIMEOUT_US); if (ret) { dev_err(qproc->dev, "xo cbcr enabling timed out (rc:%d)\n", ret);