From patchwork Wed Apr 1 16:35:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Marko X-Patchwork-Id: 11469297 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 ADF711667 for ; Wed, 1 Apr 2020 16:36:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 82432206F8 for ; Wed, 1 Apr 2020 16:36:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=sartura-hr.20150623.gappssmtp.com header.i=@sartura-hr.20150623.gappssmtp.com header.b="rd+Awazg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388862AbgDAQgh (ORCPT ); Wed, 1 Apr 2020 12:36:37 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:40447 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388853AbgDAQgg (ORCPT ); Wed, 1 Apr 2020 12:36:36 -0400 Received: by mail-wm1-f66.google.com with SMTP id a81so421232wmf.5 for ; Wed, 01 Apr 2020 09:36:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sartura-hr.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=NMjjibIIWKkjS3mT8K/LaAOt0umug6ECpFrUMrbf80Q=; b=rd+AwazgQtjycidexmpripXlv6sExR1iyC9NGpGdwXNOdf5HXtivEGNSm7y3HEEW01 pO5Jcwx099a+TbdeSZKSCeC1Ws3zT5LF11bALAwwG114zulw0YKnHuONg2uZjPUE5Wti uUMWUreMFRKj/XmfUiQVmXMRDhpHIEPsD+FEv409H2NuerOeYprfUCqL8ETi9Nu8DY0/ NqV8nhW4Rbik9ODqKHqhbHvDzLVlOHpluFOP5cGxsy9TQVSda31sUxDJ2wl3M0HABAt6 QuVJPJuT2ZIMelKRJBgK/3PeZWTk+MUaG/fVCo1YqRLYzkwalQ9PvsLDmlt3zMGKwAa5 cBXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=NMjjibIIWKkjS3mT8K/LaAOt0umug6ECpFrUMrbf80Q=; b=ac5a9eAgbmmwBIAmCVm99wshpc0DKAPSboc0rVVK+O4MZkoarffRvvX793XrzwPTNH B3zMT6EsIqmdJanxUdZ7fx8ZEHfYflJuaxwOrZaUV2+szE1zghBY+yLOmTW5/q4boL6W jfbOc+YqwmuXF/+kkkIk0HORqIZ2ohp44B3DpsNX7knrdX3dfZut6KLi6LgcgXzyjR+k MQXu+ggmT/JbGO/+f/LHrIanMvCNqMF0qG0X+YrINzDzjGWk0olR+EhvKKZCgoWgq3/j /5Y6Xjka0X9ZY77F4pbs+gEQXCht7wNTxIKbFEL2bNJ+xDVJRJ88pYZ/7HB1omoxWBtH MFRA== X-Gm-Message-State: AGi0PuZ7lZMXyAIC5oC5obJ1dtQ5TMCLHvoyT+TXQxxuK+2e42A9uvWr 3St10+obFtQLvWtN1tJNAVD+2g== X-Google-Smtp-Source: APiQypISXBhfigkZ3U0+m3gPPPo3LeeW8N/Ua3b1ew6ttu1W9GvhfhsGF28tOPyyiAZWPly5FNy+Zw== X-Received: by 2002:a7b:c45a:: with SMTP id l26mr5149681wmi.22.1585758993767; Wed, 01 Apr 2020 09:36:33 -0700 (PDT) Received: from localhost.localdomain (dh207-97-209.xnet.hr. [88.207.97.209]) by smtp.googlemail.com with ESMTPSA id t5sm3763573wrr.93.2020.04.01.09.36.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Apr 2020 09:36:32 -0700 (PDT) From: Robert Marko To: agross@kernel.org, bjorn.andersson@linaro.org, kishon@ti.com, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org Cc: John Crispin , Robert Marko , Luka Perkov Subject: [PATCH v6 1/3] phy: add driver for Qualcomm IPQ40xx USB PHY Date: Wed, 1 Apr 2020 18:35:41 +0200 Message-Id: <20200401163542.83278-1-robert.marko@sartura.hr> X-Mailer: git-send-email 2.26.0 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 From: John Crispin Add a driver to setup the USB phy on Qualcom Dakota SoCs. The driver sets up HS and SS phys. Signed-off-by: John Crispin Signed-off-by: Robert Marko Cc: Luka Perkov --- Changes from v2 to v3: * Remove magic writes as they are not needed * Correct commit message drivers/phy/qualcomm/Kconfig | 7 + drivers/phy/qualcomm/Makefile | 1 + drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c | 152 ++++++++++++++++++++ 3 files changed, 160 insertions(+) create mode 100644 drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig index e46824da29f6..964bd5d784d2 100644 --- a/drivers/phy/qualcomm/Kconfig +++ b/drivers/phy/qualcomm/Kconfig @@ -18,6 +18,13 @@ config PHY_QCOM_APQ8064_SATA depends on OF select GENERIC_PHY +config PHY_QCOM_IPQ4019_USB + tristate "Qualcomm IPQ4019 USB PHY module" + depends on OF && ARCH_QCOM + select GENERIC_PHY + help + Support for the USB PHY on QCOM IPQ4019/Dakota chipsets. + config PHY_QCOM_IPQ806X_SATA tristate "Qualcomm IPQ806x SATA SerDes/PHY driver" depends on ARCH_QCOM diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile index 283251d6a5d9..8afe6c4f5178 100644 --- a/drivers/phy/qualcomm/Makefile +++ b/drivers/phy/qualcomm/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_PHY_ATH79_USB) += phy-ath79-usb.o obj-$(CONFIG_PHY_QCOM_APQ8064_SATA) += phy-qcom-apq8064-sata.o +obj-$(CONFIG_PHY_QCOM_IPQ4019_USB) += phy-qcom-ipq4019-usb.o obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA) += phy-qcom-ipq806x-sata.o obj-$(CONFIG_PHY_QCOM_PCIE2) += phy-qcom-pcie2.o obj-$(CONFIG_PHY_QCOM_QMP) += phy-qcom-qmp.o diff --git a/drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c b/drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c new file mode 100644 index 000000000000..7efebae6b6fd --- /dev/null +++ b/drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c @@ -0,0 +1,152 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2018 John Crispin + * + * Based on code from + * Allwinner Technology Co., Ltd. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct ipq4019_usb_phy { + struct device *dev; + struct phy *phy; + void __iomem *base; + struct reset_control *por_rst; + struct reset_control *srif_rst; +}; + +static int ipq4019_ss_phy_power_off(struct phy *_phy) +{ + struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy); + + reset_control_assert(phy->por_rst); + msleep(10); + + return 0; +} + +static int ipq4019_ss_phy_power_on(struct phy *_phy) +{ + struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy); + + ipq4019_ss_phy_power_off(_phy); + + reset_control_deassert(phy->por_rst); + + return 0; +} + +static struct phy_ops ipq4019_usb_ss_phy_ops = { + .power_on = ipq4019_ss_phy_power_on, + .power_off = ipq4019_ss_phy_power_off, +}; + +static int ipq4019_hs_phy_power_off(struct phy *_phy) +{ + struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy); + + reset_control_assert(phy->por_rst); + msleep(10); + + reset_control_assert(phy->srif_rst); + msleep(10); + + return 0; +} + +static int ipq4019_hs_phy_power_on(struct phy *_phy) +{ + struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy); + + ipq4019_hs_phy_power_off(_phy); + + reset_control_deassert(phy->srif_rst); + msleep(10); + + reset_control_deassert(phy->por_rst); + + return 0; +} + +static struct phy_ops ipq4019_usb_hs_phy_ops = { + .power_on = ipq4019_hs_phy_power_on, + .power_off = ipq4019_hs_phy_power_off, +}; + +static const struct of_device_id ipq4019_usb_phy_of_match[] = { + { .compatible = "qcom,usb-hs-ipq4019-phy", .data = &ipq4019_usb_hs_phy_ops}, + { .compatible = "qcom,usb-ss-ipq4019-phy", .data = &ipq4019_usb_ss_phy_ops}, + { }, +}; +MODULE_DEVICE_TABLE(of, ipq4019_usb_phy_of_match); + +static int ipq4019_usb_phy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct resource *res; + struct phy_provider *phy_provider; + struct ipq4019_usb_phy *phy; + const struct of_device_id *match; + + match = of_match_device(ipq4019_usb_phy_of_match, &pdev->dev); + if (!match) + return -ENODEV; + + phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); + if (!phy) + return -ENOMEM; + + phy->dev = &pdev->dev; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + phy->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(phy->base)) { + dev_err(dev, "failed to remap register memory\n"); + return PTR_ERR(phy->base); + } + + phy->por_rst = devm_reset_control_get(phy->dev, "por_rst"); + if (IS_ERR(phy->por_rst)) { + if (PTR_ERR(phy->por_rst) != -EPROBE_DEFER) + dev_err(dev, "POR reset is missing\n"); + return PTR_ERR(phy->por_rst); + } + + phy->srif_rst = devm_reset_control_get_optional(phy->dev, "srif_rst"); + if (IS_ERR(phy->srif_rst)) + return PTR_ERR(phy->srif_rst); + + phy->phy = devm_phy_create(dev, NULL, match->data); + if (IS_ERR(phy->phy)) { + dev_err(dev, "failed to create PHY\n"); + return PTR_ERR(phy->phy); + } + phy_set_drvdata(phy->phy, phy); + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static struct platform_driver ipq4019_usb_phy_driver = { + .probe = ipq4019_usb_phy_probe, + .driver = { + .of_match_table = ipq4019_usb_phy_of_match, + .name = "ipq4019-usb-phy", + } +}; +module_platform_driver(ipq4019_usb_phy_driver); + +MODULE_DESCRIPTION("QCOM/IPQ4019 USB phy driver"); +MODULE_AUTHOR("John Crispin "); +MODULE_LICENSE("GPL v2");