From patchwork Fri Aug 3 09:54:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 143401 Delivered-To: patch@linaro.org Received: by 2002:a2e:9754:0:0:0:0:0 with SMTP id f20-v6csp275661ljj; Fri, 3 Aug 2018 02:54:23 -0700 (PDT) X-Google-Smtp-Source: AAOMgpdZpW4LFHyVYUtfdvl84/YmsO0VQvN/1p5gdUPqla/5dy4WXEBQoQTWz0RaYER4DYQNntkb X-Received: by 2002:a62:bd4:: with SMTP id 81-v6mr3648323pfl.67.1533290063043; Fri, 03 Aug 2018 02:54:23 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1533290063; cv=none; d=google.com; s=arc-20160816; b=kZoZmF6emFP7YRQcZ99remYUujevCxHUL2XzUUDUBzKUZE2iE23KJWCeczSQxrx8l/ iifT7QkN7EDBoeDmk74P/gPvhajmRLIArUe6P9eGE3SGiNGUA3jIDivP9t4W1PC0o6DP Ga/we1iHgcRGKU0VMccoL8V0RDxkpjckvNmRXhLohH6tjuXw/vDXH6X3/fMuxD1lHl+3 tMsne3XlLFhJqjTOcldsue+GES4kSUJQCckn0M49l+8JG1N6VUTDPf6Im/WDRNTa/w5c Cnm+tnXCw1m43tILHbZOc15RefVztZV8bx0uhuSoy1W9+TmOYXlxezRl4v5hL6wIX63H JPfA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=qrzf2BJZvPlTURORbn9iSX7KFtXrjfX4OfyMz78cNU4=; b=JxRPmF4nthXXOT53lXEb5hdFFtNAQASkEOP3HGjhGjtE5RoEv5oBITqV0Um/RjgbGl +4UedRc/RFABb79r6s501X+EAXXOoyxZTg37IZVQjA4YI4mgw7wYXyR7a4Wh6tK8vROK piMi0G7ffYoiGubaThILPmOY0yhHB4xmBfG28xUnC/T8cUk1DNlGSFgIOLMcQBQMRSI/ akZs79pqgvknZAXz/2P06tynxJ/WATm2lJQaoEhyzY+uw7pxfYKvj+yA+KY03LCv65Je Tif7CYekr/eF7I4QNaGACyuO7ZdhjHS0l/2FUUdyVPk03vhm71E/x3yCrxebJx695rZZ 6jdA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id g11-v6si3916651pgf.386.2018.08.03.02.54.22; Fri, 03 Aug 2018 02:54:23 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732565AbeHCLtn (ORCPT + 5 others); Fri, 3 Aug 2018 07:49:43 -0400 Received: from mx.socionext.com ([202.248.49.38]:4856 "EHLO mx.socionext.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732467AbeHCLtm (ORCPT ); Fri, 3 Aug 2018 07:49:42 -0400 Received: from unknown (HELO iyokan-ex.css.socionext.com) ([172.31.9.54]) by mx.socionext.com with ESMTP; 03 Aug 2018 18:54:06 +0900 Received: from mail.mfilter.local (m-filter-1 [10.213.24.61]) by iyokan-ex.css.socionext.com (Postfix) with ESMTP id 9BA0C60035; Fri, 3 Aug 2018 18:54:06 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Fri, 3 Aug 2018 18:54:06 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id 401DC1A11BB; Fri, 3 Aug 2018 18:54:06 +0900 (JST) From: Kunihiko Hayashi To: Kishon Vijay Abraham I , Rob Herring , Mark Rutland , Masahiro Yamada Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Masami Hiramatsu , Jassi Brar , Kunihiko Hayashi Subject: [PATCH v2 4/4] phy: socionext: add USB2 PHY driver for UniPhier SoC Date: Fri, 3 Aug 2018 18:54:05 +0900 Message-Id: <1533290045-18969-5-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1533290045-18969-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1533290045-18969-1-git-send-email-hayashi.kunihiko@socionext.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add a driver for PHY interface built into USB2 controller implemented on UniPhier SoCs. This driver supports HS-PHY for Pro4 and LD11. Signed-off-by: Kunihiko Hayashi --- drivers/phy/socionext/Kconfig | 13 ++ drivers/phy/socionext/Makefile | 1 + drivers/phy/socionext/phy-uniphier-usb2.c | 246 ++++++++++++++++++++++++++++++ 3 files changed, 260 insertions(+) create mode 100644 drivers/phy/socionext/phy-uniphier-usb2.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/phy/socionext/Kconfig b/drivers/phy/socionext/Kconfig index 4a172fc..497ca38 100644 --- a/drivers/phy/socionext/Kconfig +++ b/drivers/phy/socionext/Kconfig @@ -2,6 +2,19 @@ # PHY drivers for Socionext platforms. # +config PHY_UNIPHIER_USB2 + tristate "UniPhier USB2 PHY driver" + depends on ARCH_UNIPHIER || COMPILE_TEST + depends on OF && HAS_IOMEM + select GENERIC_PHY + select MFD_SYSCON + help + Enable this to support USB PHY implemented on USB2 controller + on UniPhier SoCs. This driver provides interface to interact + with USB 2.0 PHY that is part of the UniPhier SoC. + In case of Pro4, it is necessary to specify this USB2 PHY instead + of USB3 HS-PHY. + config PHY_UNIPHIER_USB3 tristate "UniPhier USB3 PHY driver" depends on ARCH_UNIPHIER || COMPILE_TEST diff --git a/drivers/phy/socionext/Makefile b/drivers/phy/socionext/Makefile index e230fa31..91e4825 100644 --- a/drivers/phy/socionext/Makefile +++ b/drivers/phy/socionext/Makefile @@ -3,4 +3,5 @@ # Makefile for the phy drivers. # +obj-$(CONFIG_PHY_UNIPHIER_USB2) += phy-uniphier-usb2.o obj-$(CONFIG_PHY_UNIPHIER_USB3) += phy-uniphier-usb3hs.o phy-uniphier-usb3ss.o diff --git a/drivers/phy/socionext/phy-uniphier-usb2.c b/drivers/phy/socionext/phy-uniphier-usb2.c new file mode 100644 index 0000000..22eece2 --- /dev/null +++ b/drivers/phy/socionext/phy-uniphier-usb2.c @@ -0,0 +1,246 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// phy-uniphier-usb2.c - PHY driver for UniPhier USB2 controller +// Copyright 2015-2018 Socionext Inc. +// Author: +// Kunihiko Hayashi + +#include +#include +#include +#include +#include +#include +#include +#include + +#define SG_USBPHY1CTRL 0x500 +#define SG_USBPHY1CTRL2 0x504 +#define SG_USBPHY2CTRL 0x508 +#define SG_USBPHY2CTRL2 0x50c /* LD11 */ +#define SG_USBPHY12PLL 0x50c /* Pro4 */ +#define SG_USBPHY3CTRL 0x510 +#define SG_USBPHY3CTRL2 0x514 +#define SG_USBPHY4CTRL 0x518 /* Pro4 */ +#define SG_USBPHY4CTRL2 0x51c /* Pro4 */ +#define SG_USBPHY34PLL 0x51c /* Pro4 */ + +struct uniphier_u2phy_param { + u32 offset; + u32 value; +}; + +struct uniphier_u2phy_soc_data { + struct uniphier_u2phy_param config0; + struct uniphier_u2phy_param config1; +}; + +struct uniphier_u2phy_priv { + struct regmap *regmap; + struct phy *phy; + struct regulator *vbus; + const struct uniphier_u2phy_soc_data *data; + struct uniphier_u2phy_priv *next; +}; + +static int uniphier_u2phy_power_on(struct phy *phy) +{ + struct uniphier_u2phy_priv *priv = phy_get_drvdata(phy); + int ret = 0; + + if (priv->vbus) + ret = regulator_enable(priv->vbus); + + return ret; +} + +static int uniphier_u2phy_power_off(struct phy *phy) +{ + struct uniphier_u2phy_priv *priv = phy_get_drvdata(phy); + + if (priv->vbus) + regulator_disable(priv->vbus); + + return 0; +} + +static int uniphier_u2phy_init(struct phy *phy) +{ + struct uniphier_u2phy_priv *priv = phy_get_drvdata(phy); + + if (!priv->data) + return 0; + + regmap_write(priv->regmap, priv->data->config0.offset, + priv->data->config0.value); + regmap_write(priv->regmap, priv->data->config1.offset, + priv->data->config1.value); + + return 0; +} + +static struct phy *uniphier_u2phy_xlate(struct device *dev, + struct of_phandle_args *args) +{ + struct uniphier_u2phy_priv *priv = dev_get_drvdata(dev); + + while (priv && args->np != priv->phy->dev.of_node) + priv = priv->next; + + if (!priv) { + dev_err(dev, "Failed to find appropriate phy\n"); + return ERR_PTR(-EINVAL); + } + + return priv->phy; +} + +static const struct phy_ops uniphier_u2phy_ops = { + .init = uniphier_u2phy_init, + .power_on = uniphier_u2phy_power_on, + .power_off = uniphier_u2phy_power_off, + .owner = THIS_MODULE, +}; + +static int uniphier_u2phy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *parent, *child; + struct uniphier_u2phy_priv *priv = NULL, *next = NULL; + struct phy_provider *phy_provider; + struct regmap *regmap; + const struct uniphier_u2phy_soc_data *data; + int ret, data_idx, ndatas; + + data = of_device_get_match_data(dev); + if (WARN_ON(!data)) + return -EINVAL; + + /* get number of data */ + for (ndatas = 0; data[ndatas].config0.offset; ndatas++) + ; + + parent = of_get_parent(dev->of_node); + regmap = syscon_node_to_regmap(parent); + of_node_put(parent); + if (IS_ERR(regmap)) { + dev_err(dev, "Failed to get regmap\n"); + return PTR_ERR(regmap); + } + + for_each_child_of_node(dev->of_node, child) { + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) { + ret = -ENOMEM; + goto out_put_child; + } + priv->regmap = regmap; + + priv->vbus = devm_regulator_get_optional(dev, "vbus"); + if (IS_ERR(priv->vbus)) { + if (PTR_ERR(priv->vbus) == -EPROBE_DEFER) { + ret = PTR_ERR(priv->vbus); + goto out_put_child; + } + priv->vbus = NULL; + } + + priv->phy = devm_phy_create(dev, child, &uniphier_u2phy_ops); + if (IS_ERR(priv->phy)) { + dev_err(dev, "Failed to create phy\n"); + ret = PTR_ERR(priv->phy); + goto out_put_child; + } + + ret = of_property_read_u32(child, "reg", &data_idx); + if (ret) { + dev_err(dev, "Failed to get reg property\n"); + goto out_put_child; + } + + if (data_idx < ndatas) + priv->data = &data[data_idx]; + else + dev_warn(dev, "No phy configuration: %s\n", + child->full_name); + + phy_set_drvdata(priv->phy, priv); + priv->next = next; + next = priv; + } + + dev_set_drvdata(dev, priv); + phy_provider = devm_of_phy_provider_register(dev, + uniphier_u2phy_xlate); + if (IS_ERR(phy_provider)) + return PTR_ERR(phy_provider); + + return 0; + +out_put_child: + of_node_put(child); + + return ret; +} + +static const struct uniphier_u2phy_soc_data uniphier_pro4_data[] = { + { + .config0 = { SG_USBPHY1CTRL, 0x05142400 }, + .config1 = { SG_USBPHY12PLL, 0x00010010 }, + }, + { + .config0 = { SG_USBPHY2CTRL, 0x05142400 }, + .config1 = { SG_USBPHY12PLL, 0x00010010 }, + }, + { + .config0 = { SG_USBPHY3CTRL, 0x05142400 }, + .config1 = { SG_USBPHY34PLL, 0x00010010 }, + }, + { + .config0 = { SG_USBPHY4CTRL, 0x05142400 }, + .config1 = { SG_USBPHY34PLL, 0x00010010 }, + }, + { /* sentinel */ } +}; + +static const struct uniphier_u2phy_soc_data uniphier_ld11_data[] = { + { + .config0 = { SG_USBPHY1CTRL, 0x82280000 }, + .config1 = { SG_USBPHY1CTRL2, 0x00000106 }, + }, + { + .config0 = { SG_USBPHY2CTRL, 0x82280000 }, + .config1 = { SG_USBPHY2CTRL2, 0x00000106 }, + }, + { + .config0 = { SG_USBPHY3CTRL, 0x82280000 }, + .config1 = { SG_USBPHY3CTRL2, 0x00000106 }, + }, + { /* sentinel */ } +}; + +static const struct of_device_id uniphier_u2phy_match[] = { + { + .compatible = "socionext,uniphier-pro4-usb2-phy", + .data = &uniphier_pro4_data, + }, + { + .compatible = "socionext,uniphier-ld11-usb2-phy", + .data = &uniphier_ld11_data, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, uniphier_u2phy_match); + +static struct platform_driver uniphier_u2phy_driver = { + .probe = uniphier_u2phy_probe, + .driver = { + .name = "uniphier-usb2-phy", + .of_match_table = uniphier_u2phy_match, + }, +}; +module_platform_driver(uniphier_u2phy_driver); + +MODULE_AUTHOR("Kunihiko Hayashi "); +MODULE_DESCRIPTION("UniPhier PHY driver for USB2 controller"); +MODULE_LICENSE("GPL v2");