From patchwork Wed Nov 23 07:48:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 13053214 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64F85C43217 for ; Wed, 23 Nov 2022 07:52:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236421AbiKWHwE (ORCPT ); Wed, 23 Nov 2022 02:52:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53596 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236371AbiKWHvX (ORCPT ); Wed, 23 Nov 2022 02:51:23 -0500 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5B3B6FAE8B for ; Tue, 22 Nov 2022 23:50:16 -0800 (PST) Received: by mail-pl1-x632.google.com with SMTP id k7so15918773pll.6 for ; Tue, 22 Nov 2022 23:50:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=jQW21UMpMMT39kQGkUZ44Bi2KAiI76Uffz4R9s7ZIY4=; b=Q4uifVNUG8xLZiw0nKZzqWhlsFQVjN7R7zmwgdRS/fTSn0Pz18mv37YJD39o+JlZ+U YX50U9RmFIiBE5gaK+qWmu8dehcTfKoU1BOe+NxgY/P8qv4PehJ3qfZDfW4HwQ/uSNLF SO5irDbKFTLjuwkrCMMdtgUjo/xb1StQ14ri1Bxv1UkA/bIwjVqyt+gMUVpvegQ+Peff qG4EAibX1FxdFxy8A92f6uSiv92YFS5FM3PH+5SGqa7OLIVqu/yGOPBW3106ZA1Dj0nN or6T2UMyGk7jCA89uhNo+9K4YwS8Q70+I2BoLGhEhoS19d02r0QG25cSU+dfJA25+76c lyFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jQW21UMpMMT39kQGkUZ44Bi2KAiI76Uffz4R9s7ZIY4=; b=jHk5qlMFOGYzjb+A3axnggBbLcNy8/MiocYDqJYkbRZToYChz19MCvttD31rfhW721 JjrLcHgasl2SsJoK6Q5dOMnWdUXpUP3QPxkW+mFN6GRHZvitqRIVTP2UGmiITic1p0g8 Pto1LSnnyn3PVP1q2lgwuBt9bFV1YLufYpfgTREuAHse5bOtL/AzGKZotDOhDmQU9SaQ vTuEAQssdM5SS4xO0BZhjle7ofhMepqwG1alWy5tLZgW2oEDeESF77a6edN7lK8QyJ2u HLoXekX8VfOaGBKDjTkpsIK4LqIeyAJmLTQe2v9JN804VC+RSJ9MU1vBtpGIPPdrSd2F j/wA== X-Gm-Message-State: ANoB5pmlYFqho3E5Xz3Lj/hIXvtjPA80NoEwskHBXZPRhRAM6qZb+Sm8 WlTcTrRmmyfjWPUfib/8r+XL X-Google-Smtp-Source: AA0mqf5ljrSPGVNBRtykID1TL3/cGOrewa2yjiZmVTTVZrWsBIkuV1+BoJ27rIUb9wyuYvjPhd49vw== X-Received: by 2002:a17:90a:d811:b0:213:aa8:dda with SMTP id a17-20020a17090ad81100b002130aa80ddamr30077911pjv.111.1669189815878; Tue, 22 Nov 2022 23:50:15 -0800 (PST) Received: from localhost.localdomain ([117.202.191.0]) by smtp.gmail.com with ESMTPSA id s16-20020a170902a51000b001869f2120a5sm13334059plq.34.2022.11.22.23.50.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Nov 2022 23:50:15 -0800 (PST) From: Manivannan Sadhasivam To: martin.petersen@oracle.com, jejb@linux.ibm.com, andersson@kernel.org, vkoul@kernel.org Cc: quic_cang@quicinc.com, quic_asutoshd@quicinc.com, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-scsi@vger.kernel.org, dmitry.baryshkov@linaro.org, ahalaney@redhat.com, abel.vesa@linaro.org, Manivannan Sadhasivam Subject: [PATCH v3 17/20] scsi: ufs: ufs-qcom: Factor out the logic finding the HS Gear Date: Wed, 23 Nov 2022 13:18:23 +0530 Message-Id: <20221123074826.95369-18-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221123074826.95369-1-manivannan.sadhasivam@linaro.org> References: <20221123074826.95369-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In the preparation of adding support for new gears, let's move the logic that finds the gear for each platform to a new function. This helps with code readability and also allows the logic to be used in other places of the driver in future. While at it, let's make it clear that this driver only supports symmetric gear setting (hs_tx_gear == hs_rx_gear). Reviewed-by: Andrew Halaney Signed-off-by: Manivannan Sadhasivam --- drivers/ufs/host/ufs-qcom.c | 34 +++++++++++++++++++++------------- 1 file changed, 21 insertions(+), 13 deletions(-) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 38e2ed749d75..919b6eae439d 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -278,6 +278,25 @@ static int ufs_qcom_host_reset(struct ufs_hba *hba) return 0; } +static u32 ufs_qcom_get_hs_gear(struct ufs_hba *hba) +{ + struct ufs_qcom_host *host = ufshcd_get_variant(hba); + + if (host->hw_ver.major == 0x1) { + /* + * HS-G3 operations may not reliably work on legacy QCOM + * UFS host controller hardware even though capability + * exchange during link startup phase may end up + * negotiating maximum supported gear as G3. + * Hence downgrade the maximum supported gear to HS-G2. + */ + return UFS_HS_G2; + } + + /* Default is HS-G3 */ + return UFS_HS_G3; +} + static int ufs_qcom_power_up_sequence(struct ufs_hba *hba) { struct ufs_qcom_host *host = ufshcd_get_variant(hba); @@ -692,19 +711,8 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba, ufshcd_init_pwr_dev_param(&ufs_qcom_cap); ufs_qcom_cap.hs_rate = UFS_QCOM_LIMIT_HS_RATE; - if (host->hw_ver.major == 0x1) { - /* - * HS-G3 operations may not reliably work on legacy QCOM - * UFS host controller hardware even though capability - * exchange during link startup phase may end up - * negotiating maximum supported gear as G3. - * Hence downgrade the maximum supported gear to HS-G2. - */ - if (ufs_qcom_cap.hs_tx_gear > UFS_HS_G2) - ufs_qcom_cap.hs_tx_gear = UFS_HS_G2; - if (ufs_qcom_cap.hs_rx_gear > UFS_HS_G2) - ufs_qcom_cap.hs_rx_gear = UFS_HS_G2; - } + /* This driver only supports symmetic gear setting i.e., hs_tx_gear == hs_rx_gear */ + ufs_qcom_cap.hs_tx_gear = ufs_qcom_cap.hs_rx_gear = ufs_qcom_get_hs_gear(hba); ret = ufshcd_get_pwr_dev_param(&ufs_qcom_cap, dev_max_params,