From patchwork Thu Dec 22 14:09:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 636539 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 AA01CC001B2 for ; Thu, 22 Dec 2022 14:15:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235683AbiLVOPw (ORCPT ); Thu, 22 Dec 2022 09:15:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235644AbiLVOOt (ORCPT ); Thu, 22 Dec 2022 09:14:49 -0500 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CA242248E5 for ; Thu, 22 Dec 2022 06:12:47 -0800 (PST) Received: by mail-pj1-x1034.google.com with SMTP id v23so2014729pju.3 for ; Thu, 22 Dec 2022 06:12:47 -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=aBn3zEFmIV6MhSJTCqVfJoKippEJn3UVUNP6V0+D++w=; b=wUEp+NmpgcRSpWDAl5gCZLjGhtZOUkb6nH0n9cqBjo1QjAmnGSD7tz6SDlueRbPqU7 Pg58jvzpbEa5o9H4QDHwvb+xubArD7c4VsVqyoewLiLlPIu9zYu8umlPz6bY+qbSBIKB GDEDwBvoMAWXMY87a8AS3OemBzeDMf+zwDx1Ez9qW5ya4vxTB4+8ImILjJyoOxImdKaX BjK//SJQUjz4knoV54gc8pC3pwQlKYSVM6w0uFkWeHnXlNNpRiMIK/JH68QdlKIiUcfp Z1YOqDt8BL4jrYcv6CQNRYAs+VPHtZS4ff9BvD50/froZGoTp+7WhIjv5+U38QLMGbqn 1AkQ== 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=aBn3zEFmIV6MhSJTCqVfJoKippEJn3UVUNP6V0+D++w=; b=LFBFSMXME3sFA3VQ6LWKY8IT2Jmi9HAqWN0Fwkit8+4KaIUB+f1ED0UneZmLeTp6SM /rv7cMDlDRdMwGW+fJ36A0Rw8jnc3SzSr6ED0UZpwTTBIrW31EJCOuBMLtaM/O1MM31Z fJnaA6WQABfynk7qF0pjV3jJ+Pvc6s28fxzKT5VSb1/mDgjfouYvRaXK7nFh5n+wz5Fg Vx8xrkN8g9UtH4INsKfawMU+LiTrLJAnMm+WlbCp4ukdKkq+nBz2RuDRiVCbO/SImojG k+lR/wwAJ3eFVMEQ2ppV5NONXzQSUX5QEZfXwJI/AW/dEVIubgHNcOHRgfTIBx7vy9HA 4j6w== X-Gm-Message-State: AFqh2krf+R4u2/lP6t8eLB1xnSb65hOeA5JQ++CmrYVB2YbruqJ7aN26 7oTLeGhtvCBTGBVHm6CfOKSR X-Google-Smtp-Source: AMrXdXtmutM2RQ/lU4e/I/kqUw5HOoB1HQclleoi8/H3D+yG44Gbrwy7yofMNVMYL9R5pI1N2pY2Nw== X-Received: by 2002:a05:6a20:c112:b0:ad:e904:f247 with SMTP id bh18-20020a056a20c11200b000ade904f247mr6784083pzb.29.1671718367062; Thu, 22 Dec 2022 06:12:47 -0800 (PST) Received: from localhost.localdomain ([117.217.177.177]) by smtp.gmail.com with ESMTPSA id f8-20020a655908000000b0047829d1b8eesm832031pgu.31.2022.12.22.06.12.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Dec 2022 06:12:46 -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, alim.akhtar@samsung.com, avri.altman@wdc.com, bvanassche@acm.org, Manivannan Sadhasivam Subject: [PATCH v5 21/23] scsi: ufs: ufs-qcom: Add support for reinitializing the UFS device Date: Thu, 22 Dec 2022 19:39:59 +0530 Message-Id: <20221222141001.54849-22-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221222141001.54849-1-manivannan.sadhasivam@linaro.org> References: <20221222141001.54849-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Starting from Qualcomm UFS version 4, the UFS device needs to be reinitialized after switching to maximum gear by the UFS core. Hence, add support for it by enabling the UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH quirk, implementing reinit_notify() callback and using the agreed gear speed for setting the PHY mode. Suggested-by: Can Guo Tested-by: Andrew Halaney # Qdrive3/sa8540p-ride Signed-off-by: Manivannan Sadhasivam --- drivers/ufs/host/ufs-qcom.c | 26 ++++++++++++++++++++++---- drivers/ufs/host/ufs-qcom.h | 2 ++ 2 files changed, 24 insertions(+), 4 deletions(-) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 919b6eae439d..3efef2f36e69 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -302,7 +302,6 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *hba) struct ufs_qcom_host *host = ufshcd_get_variant(hba); struct phy *phy = host->generic_phy; int ret; - bool is_rate_B = UFS_QCOM_LIMIT_HS_RATE == PA_HS_MODE_B; /* Reset UFS Host Controller and PHY */ ret = ufs_qcom_host_reset(hba); @@ -310,9 +309,6 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *hba) dev_warn(hba->dev, "%s: host reset returned %d\n", __func__, ret); - if (is_rate_B) - phy_set_mode(phy, PHY_MODE_UFS_HS_B); - /* phy initialization - calibrate the phy */ ret = phy_init(phy); if (ret) { @@ -321,6 +317,8 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *hba) return ret; } + phy_set_mode_ext(phy, PHY_MODE_UFS_HS_B, host->hs_gear); + /* power on phy - start serdes and phy's power and clocks */ ret = phy_power_on(phy); if (ret) { @@ -723,6 +721,9 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba, return ret; } + /* Use the agreed gear */ + host->hs_gear = dev_req_params->gear_tx; + /* enable the device ref clock before changing to HS mode */ if (!ufshcd_is_hs_mode(&hba->pwr_info) && ufshcd_is_hs_mode(dev_req_params)) @@ -836,6 +837,9 @@ static void ufs_qcom_advertise_quirks(struct ufs_hba *hba) | UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE | UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP); } + + if (host->hw_ver.major > 0x3) + hba->quirks |= UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH; } static void ufs_qcom_set_caps(struct ufs_hba *hba) @@ -1044,6 +1048,12 @@ static int ufs_qcom_init(struct ufs_hba *hba) dev_warn(dev, "%s: failed to configure the testbus %d\n", __func__, err); + /* + * Power up the PHY using the minimum supported gear (UFS_HS_G2). + * Switching to max gear will be performed during reinit if supported. + */ + host->hs_gear = UFS_HS_G2; + return 0; out_variant_clear: @@ -1410,6 +1420,13 @@ static void ufs_qcom_config_scaling_param(struct ufs_hba *hba, } #endif +static void ufs_qcom_reinit_notify(struct ufs_hba *hba) +{ + struct ufs_qcom_host *host = ufshcd_get_variant(hba); + + phy_power_off(host->generic_phy); +} + /* * struct ufs_hba_qcom_vops - UFS QCOM specific variant operations * @@ -1433,6 +1450,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = { .device_reset = ufs_qcom_device_reset, .config_scaling_param = ufs_qcom_config_scaling_param, .program_key = ufs_qcom_ice_program_key, + .reinit_notify = ufs_qcom_reinit_notify, }; /** diff --git a/drivers/ufs/host/ufs-qcom.h b/drivers/ufs/host/ufs-qcom.h index 7fe928b82753..4b00c67e9d7f 100644 --- a/drivers/ufs/host/ufs-qcom.h +++ b/drivers/ufs/host/ufs-qcom.h @@ -217,6 +217,8 @@ struct ufs_qcom_host { struct reset_controller_dev rcdev; struct gpio_desc *device_reset; + + u32 hs_gear; }; static inline u32