From patchwork Tue Jan 29 11:35:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jorge Ramirez-Ortiz X-Patchwork-Id: 10786065 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 76ADC139A for ; Tue, 29 Jan 2019 11:35:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6807E289C7 for ; Tue, 29 Jan 2019 11:35:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5C0652B338; Tue, 29 Jan 2019 11:35:37 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4E4B4289C7 for ; Tue, 29 Jan 2019 11:35:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728194AbfA2LfX (ORCPT ); Tue, 29 Jan 2019 06:35:23 -0500 Received: from mail-wm1-f67.google.com ([209.85.128.67]:50609 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726763AbfA2LfW (ORCPT ); Tue, 29 Jan 2019 06:35:22 -0500 Received: by mail-wm1-f67.google.com with SMTP id n190so17461921wmd.0 for ; Tue, 29 Jan 2019 03:35:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=vJnKrcfM/+d9v4u5OjjWenwaWoG5s67rgvvgtB7HnPo=; b=AMLbavHhWoi6TWDvhbqvNZYHidPLMTf8rCfWS2eoDhSByogT6TK3QbVJEl8EQ61R8P bKeeHTnZYfvAEbqucIc9d3KdfeoHHcxGAY4vxSPDkkGO0CMcU08GcYKpBtu66mW/o7XD CjcWDxk3mgzmwFfhcTzoWckakzejfTuXOyo7c= 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:in-reply-to :references; bh=vJnKrcfM/+d9v4u5OjjWenwaWoG5s67rgvvgtB7HnPo=; b=V57D1FVSYkDkk2b8dFBbSBiKG8n77LqSGdParDjJDa+w562DCDiBugqmesX1zf23vm 5Kw0jTKohtI1nuRvZSbEaDrd2VudRP6BJ5v1EoosR3TfkwKdv1se9PVmcfDoTqNPzGaD 0dLE8Tkoj7S8o2TJhw08HFfu1tbwIGtbzx/VEXc8TzWE87UHI9pLwsHumCsETJ/9fvOH 62JXYBlewa1lFh/ULR2Cx1qyg23eOz5G8XzfB+7Vc1BjsYlsWO7n+BiuCmB2g6oYgh26 D2ccC+MN6pfAMIh9XXvgNHJ4yQzVP7mP8EFbZ/MitC7rYaOZ3JWmCfOwrh9iBZuq/+Yu ifvQ== X-Gm-Message-State: AJcUukcAY0udpIV6uwu6Axc3132nt8eJpaUoBL0qRfshdJ8XnDyejlk2 BGdBMryNycOF1WxZy6Ltp03V/Q== X-Google-Smtp-Source: ALg8bN5gPUfareuVF/+xOPS2D1Dc/OcgeVwYJG0RopNBAzp444G93viziKhe7kZlRodp5BFMnUKTrA== X-Received: by 2002:a1c:b10a:: with SMTP id a10mr20438892wmf.148.1548761720574; Tue, 29 Jan 2019 03:35:20 -0800 (PST) Received: from localhost.localdomain (233.red-81-47-145.staticip.rima-tde.net. [81.47.145.233]) by smtp.gmail.com with ESMTPSA id i192sm1960129wmg.7.2019.01.29.03.35.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 29 Jan 2019 03:35:20 -0800 (PST) From: Jorge Ramirez-Ortiz To: jorge.ramirez-ortiz@linaro.org, gregkh@linuxfoundation.org, mark.rutland@arm.com, kishon@ti.com, jackp@codeaurora.org, andy.gross@linaro.org, swboyd@chromium.org Cc: shawn.guo@linaro.org, vkoul@kernel.org, bjorn.andersson@linaro.org, khasim.mohammed@linaro.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] dt-bindings: Add Qualcomm USB Super-Speed PHY bindings Date: Tue, 29 Jan 2019 12:35:14 +0100 Message-Id: <1548761715-4004-2-git-send-email-jorge.ramirez-ortiz@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1548761715-4004-1-git-send-email-jorge.ramirez-ortiz@linaro.org> References: <1548761715-4004-1-git-send-email-jorge.ramirez-ortiz@linaro.org> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Binding description for Qualcomm's Synopsys 1.0.0 super-speed PHY controller embedded in QCS404. Based on Sriharsha Allenki's original definitions. Signed-off-by: Jorge Ramirez-Ortiz --- .../devicetree/bindings/usb/qcom,usb-ssphy.txt | 73 ++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/qcom,usb-ssphy.txt diff --git a/Documentation/devicetree/bindings/usb/qcom,usb-ssphy.txt b/Documentation/devicetree/bindings/usb/qcom,usb-ssphy.txt new file mode 100644 index 0000000..8ef6e39 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/qcom,usb-ssphy.txt @@ -0,0 +1,73 @@ +Qualcomm Synopsys 1.0.0 SS phy controller +=========================================== + +Synopsys 1.0.0 ss phy controller supports SS usb connectivity on Qualcomm +chipsets + +Required properties: + +- compatible: + Value type: + Definition: Should contain "qcom,usb-ssphy". + +- reg: + Value type: + Definition: USB PHY base address and length of the register map. + +- #phy-cells: + Value type: + Definition: Should be 0. See phy/phy-bindings.txt for details. + +- clocks: + Value type: + Definition: See clock-bindings.txt section "consumers". List of + three clock specifiers for reference, phy core and + pipe clocks. + +- clock-names: + Value type: + Definition: Names of the clocks in 1-1 correspondence with the "clocks" + property. Must contain "ref", "phy" and "pipe". + +- vdd-supply: + Value type: + Definition: phandle to the regulator VDD supply node. + +- vdda1p8-supply: + Value type: + Definition: phandle to the regulator 1.8V supply node. + + +Optional child nodes: + +- vbus-supply: + Value type: + Definition: phandle to the VBUS supply node. + +- resets: + Value type: + Definition: See reset.txt section "consumers". PHY reset specifiers + for phy core and COR resets. + +- reset-names: + Value type: + Definition: Names of the resets in 1-1 correspondence with the "resets" + property. Must contain "com" and "phy". + +Example: + +usb3_phy: phy@78000 { + compatible = "qcom,usb-ssphy"; + reg = <0x78000 0x400>; + #phy-cells = <0>; + clocks = <&rpmcc RPM_SMD_LN_BB_CLK>, + <&gcc GCC_USB_HS_PHY_CFG_AHB_CLK>, + <&gcc GCC_USB3_PHY_PIPE_CLK>; + clock-names = "ref", "phy", "pipe"; + resets = <&gcc GCC_USB3_PHY_BCR>, + <&gcc GCC_USB3PHY_PHY_BCR>; + reset-names = "com", "phy"; + vdd-supply = <&vreg_l3_1p05>; + vdda1p8-supply = <&vreg_l5_1p8>; + vbus-supply = <&usb3_vbus_reg>; +}; From patchwork Tue Jan 29 11:35:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jorge Ramirez-Ortiz X-Patchwork-Id: 10786061 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4C06B139A for ; Tue, 29 Jan 2019 11:35:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3CCB7289C7 for ; Tue, 29 Jan 2019 11:35:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3019A2B338; Tue, 29 Jan 2019 11:35:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 65DEE289C7 for ; Tue, 29 Jan 2019 11:35:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727388AbfA2Lfc (ORCPT ); Tue, 29 Jan 2019 06:35:32 -0500 Received: from mail-wr1-f66.google.com ([209.85.221.66]:35525 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725804AbfA2LfY (ORCPT ); Tue, 29 Jan 2019 06:35:24 -0500 Received: by mail-wr1-f66.google.com with SMTP id 96so21689691wrb.2 for ; Tue, 29 Jan 2019 03:35:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=VBrpJcJs752W++ic9rn3GaeRCbiL/4SmAU6bli7+VYk=; b=W3QVl+RYCf6dOsZsWrtHzzBIfeTbHxubg4r1eqqud9cuKvcNxKo/2XqVjCz0vx3HKC O66PDhKDpyYG9oa63RPNRupINT9f6gi7VDRoSA4RJ23/pNdlAkhJQBCSLB+9SNzunRSf 1g2miB73Qw9GdPGzLUoElnTxJPdT1YpbeWwEU= 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:in-reply-to :references; bh=VBrpJcJs752W++ic9rn3GaeRCbiL/4SmAU6bli7+VYk=; b=lnDhJ3sh93YYpR4Gu1YqMC3uHv5Zpe0R2Wso7RDNjOS9k4aLq3tOSPWp97vk1l1BT4 Za6SCeCgClUwdBIeIJjkVPJJJ2HK+AyixjTcwTj0+DSrLYc0TT71o8NvHoU7I+unE6e8 6s278+tC1Kl2oTnrX3ANE4omxBz3NGXCksCD4Z17CWH5NiIJNpP4GPwQw2PtpqOsAk78 0MeqrR3LzF0oeHJKOvJJfo87MqhpHEM7BOcBvB3ZjCOh+VQIp7DUaZVqWpXkpNWCuSg+ I+HheEWcswa1Uxr5vFOnCrx4yZzD59V3tVkq3QR2YpjPyHkgzch3Q5O3NPD1n10di7R9 /kOQ== X-Gm-Message-State: AJcUuke9O89hfRv+OvyGEBr83ZSgSPartxD2X13+KjTuhEQk+FF7Kity gQ5pSjBFaTnlo/BOEbspMJy8KA== X-Google-Smtp-Source: ALg8bN5hWgbVM4nxHAu3jl35edxuRl9813cf11QPZPQ66bN9YwVXUk9mctVm9W83MFNPyOYzjmrmuw== X-Received: by 2002:adf:afdc:: with SMTP id y28mr24857802wrd.275.1548761722001; Tue, 29 Jan 2019 03:35:22 -0800 (PST) Received: from localhost.localdomain (233.red-81-47-145.staticip.rima-tde.net. [81.47.145.233]) by smtp.gmail.com with ESMTPSA id i192sm1960129wmg.7.2019.01.29.03.35.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 29 Jan 2019 03:35:21 -0800 (PST) From: Jorge Ramirez-Ortiz To: jorge.ramirez-ortiz@linaro.org, gregkh@linuxfoundation.org, mark.rutland@arm.com, kishon@ti.com, jackp@codeaurora.org, andy.gross@linaro.org, swboyd@chromium.org Cc: shawn.guo@linaro.org, vkoul@kernel.org, bjorn.andersson@linaro.org, khasim.mohammed@linaro.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/2] phy: qualcomm: usb: Add Super-Speed PHY driver Date: Tue, 29 Jan 2019 12:35:15 +0100 Message-Id: <1548761715-4004-3-git-send-email-jorge.ramirez-ortiz@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1548761715-4004-1-git-send-email-jorge.ramirez-ortiz@linaro.org> References: <1548761715-4004-1-git-send-email-jorge.ramirez-ortiz@linaro.org> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Driver to control the Synopsys SS PHY 1.0.0 implemeneted in QCS404 Based on Sriharsha Allenki's original code. Signed-off-by: Jorge Ramirez-Ortiz --- drivers/phy/qualcomm/Kconfig | 11 ++ drivers/phy/qualcomm/Makefile | 1 + drivers/phy/qualcomm/phy-qcom-usb-ss.c | 347 +++++++++++++++++++++++++++++++++ 3 files changed, 359 insertions(+) create mode 100644 drivers/phy/qualcomm/phy-qcom-usb-ss.c diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig index c7b5ee8..35a5a67 100644 --- a/drivers/phy/qualcomm/Kconfig +++ b/drivers/phy/qualcomm/Kconfig @@ -92,3 +92,14 @@ config PHY_QCOM_USB_HS_SNPS_28NM Enable this to support the Synopsys 28nm Femto USB PHY on Qualcomm chips. This driver supports the high-speed PHY which is usually paired with either the ChipIdea or Synopsys DWC3 USB IPs on MSM SOCs. + +config PHY_QCOM_USB_SS + tristate "Qualcomm USB SS PHY driver" + depends on ARCH_QCOM || COMPILE_TEST + depends on EXTCON || !EXTCON # if EXTCON=m, this cannot be built-in + select GENERIC_PHY + help + Enable this to support the Super-Speed USB transceiver on Qualcomm + chips. This driver supports the PHY which uses the QSCRATCH-based + register set for its control sequences, normally paired with newer + DWC3-based Super-Speed controllers on Qualcomm SoCs. diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile index dc238d9..7149261 100644 --- a/drivers/phy/qualcomm/Makefile +++ b/drivers/phy/qualcomm/Makefile @@ -10,3 +10,4 @@ obj-$(CONFIG_PHY_QCOM_UFS_20NM) += phy-qcom-ufs-qmp-20nm.o obj-$(CONFIG_PHY_QCOM_USB_HS) += phy-qcom-usb-hs.o obj-$(CONFIG_PHY_QCOM_USB_HSIC) += phy-qcom-usb-hsic.o obj-$(CONFIG_PHY_QCOM_USB_HS_SNPS_28NM) += phy-qcom-usb-hs-snsp-28nm.o +obj-$(CONFIG_PHY_QCOM_USB_SS) += phy-qcom-usb-ss.o diff --git a/drivers/phy/qualcomm/phy-qcom-usb-ss.c b/drivers/phy/qualcomm/phy-qcom-usb-ss.c new file mode 100644 index 0000000..e6ae96e --- /dev/null +++ b/drivers/phy/qualcomm/phy-qcom-usb-ss.c @@ -0,0 +1,347 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2012-2014,2017 The Linux Foundation. All rights reserved. + * Copyright (c) 2018, Linaro Limited + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define PHY_CTRL0 0x6C +#define PHY_CTRL1 0x70 +#define PHY_CTRL2 0x74 +#define PHY_CTRL4 0x7C + +/* PHY_CTRL bits */ +#define REF_PHY_EN BIT(0) +#define LANE0_PWR_ON BIT(2) +#define SWI_PCS_CLK_SEL BIT(4) +#define TST_PWR_DOWN BIT(4) +#define PHY_RESET BIT(7) + +enum phy_vdd_ctrl { ENABLE, DISABLE, }; +enum phy_regulator { VDD, VDDA1P8, }; + +struct ssphy_priv { + void __iomem *base; + struct device *dev; + struct reset_control *reset_com; + struct reset_control *reset_phy; + struct regulator *vbus; + struct regulator_bulk_data *regs; + int num_regs; + struct clk_bulk_data *clks; + int num_clks; + enum phy_mode mode; +}; + +static inline void qcom_ssphy_updatel(void __iomem *addr, u32 mask, u32 val) +{ + writel((readl(addr) & ~mask) | val, addr); +} + +static inline int qcom_ssphy_vbus_enable(struct regulator *vbus) +{ + return !regulator_is_enabled(vbus) ? regulator_enable(vbus) : 0; +} + +static inline int qcom_ssphy_vbus_disable(struct regulator *vbus) +{ + return regulator_is_enabled(vbus) ? regulator_disable(vbus) : 0; +} + +static int qcom_ssphy_vdd_ctrl(struct ssphy_priv *priv, enum phy_vdd_ctrl ctrl) +{ + const int vdd_min = ctrl == ENABLE ? 1050000 : 0; + const int vdd_max = 1050000; + int ret; + + ret = regulator_set_voltage(priv->regs[VDD].consumer, vdd_min, vdd_max); + if (ret) + dev_err(priv->dev, "Failed to set regulator vdd to %d\n", + vdd_min); + + return ret; +} + +static int qcom_ssphy_vbus_ctrl(struct regulator *vbus, enum phy_mode mode) +{ + if (!vbus) + return 0; + + if (mode == PHY_MODE_INVALID) + return 0; + + /* gadget attached */ + if (mode == PHY_MODE_USB_HOST) + return qcom_ssphy_vbus_enable(vbus); + + /* USB_DEVICE: gadget removed: enable detection */ + return qcom_ssphy_vbus_disable(vbus); +} + +static int qcom_ssphy_do_reset(struct ssphy_priv *priv) +{ + int ret; + + if (!priv->reset_com) { + qcom_ssphy_updatel(priv->base + PHY_CTRL1, PHY_RESET, + PHY_RESET); + usleep_range(10, 20); + qcom_ssphy_updatel(priv->base + PHY_CTRL1, PHY_RESET, 0); + } else { + ret = reset_control_assert(priv->reset_com); + if (ret) { + dev_err(priv->dev, "Failed to assert reset com\n"); + return ret; + } + + ret = reset_control_assert(priv->reset_phy); + if (ret) { + dev_err(priv->dev, "Failed to assert reset phy\n"); + return ret; + } + + usleep_range(10, 20); + + ret = reset_control_deassert(priv->reset_com); + if (ret) { + dev_err(priv->dev, "Failed to deassert reset com\n"); + return ret; + } + + ret = reset_control_deassert(priv->reset_phy); + if (ret) { + dev_err(priv->dev, "Failed to deassert reset phy\n"); + return ret; + } + } + + return 0; +} + +static int qcom_ssphy_power_on(struct phy *phy) +{ + struct ssphy_priv *priv = phy_get_drvdata(phy); + int ret; + + ret = qcom_ssphy_vdd_ctrl(priv, ENABLE); + if (ret) + return ret; + + ret = regulator_bulk_enable(priv->num_regs, priv->regs); + if (ret) + goto err1; + + ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks); + if (ret) + goto err2; + + ret = qcom_ssphy_vbus_ctrl(priv->vbus, priv->mode); + if (ret) + goto err3; + + ret = qcom_ssphy_do_reset(priv); + if (ret) + goto err4; + + writeb(SWI_PCS_CLK_SEL, priv->base + PHY_CTRL0); + qcom_ssphy_updatel(priv->base + PHY_CTRL4, LANE0_PWR_ON, LANE0_PWR_ON); + qcom_ssphy_updatel(priv->base + PHY_CTRL2, REF_PHY_EN, REF_PHY_EN); + qcom_ssphy_updatel(priv->base + PHY_CTRL4, TST_PWR_DOWN, 0); + + return 0; +err4: + if (priv->vbus && priv->mode != PHY_MODE_INVALID) + qcom_ssphy_vbus_disable(priv->vbus); +err3: + clk_bulk_disable_unprepare(priv->num_clks, priv->clks); +err2: + regulator_bulk_disable(priv->num_regs, priv->regs); +err1: + qcom_ssphy_vdd_ctrl(priv, DISABLE); + + return ret; +} + +static int qcom_ssphy_power_off(struct phy *phy) +{ + struct ssphy_priv *priv = phy_get_drvdata(phy); + + qcom_ssphy_updatel(priv->base + PHY_CTRL4, LANE0_PWR_ON, 0); + qcom_ssphy_updatel(priv->base + PHY_CTRL2, REF_PHY_EN, 0); + qcom_ssphy_updatel(priv->base + PHY_CTRL4, TST_PWR_DOWN, TST_PWR_DOWN); + + clk_bulk_disable_unprepare(priv->num_clks, priv->clks); + regulator_bulk_disable(priv->num_regs, priv->regs); + + if (priv->vbus && priv->mode != PHY_MODE_INVALID) + qcom_ssphy_vbus_disable(priv->vbus); + + qcom_ssphy_vdd_ctrl(priv, DISABLE); + + return 0; +} + +static int qcom_ssphy_init_clock(struct ssphy_priv *priv) +{ + const char * const clk_id[] = { "ref", "phy", "pipe", }; + int i; + + priv->num_clks = ARRAY_SIZE(clk_id); + priv->clks = devm_kcalloc(priv->dev, priv->num_clks, + sizeof(*priv->clks), GFP_KERNEL); + if (!priv->clks) + return -ENOMEM; + + for (i = 0; i < priv->num_clks; i++) + priv->clks[i].id = clk_id[i]; + + return devm_clk_bulk_get(priv->dev, priv->num_clks, priv->clks); +} + +static int qcom_ssphy_init_regulator(struct ssphy_priv *priv) +{ + const char * const reg_supplies[] = { + [VDD] = "vdd", + [VDDA1P8] = "vdda1p8", + }; + int ret, i; + + priv->num_regs = ARRAY_SIZE(reg_supplies); + priv->regs = devm_kcalloc(priv->dev, priv->num_regs, + sizeof(*priv->regs), GFP_KERNEL); + if (!priv->regs) + return -ENOMEM; + + for (i = 0; i < priv->num_regs; i++) + priv->regs[i].supply = reg_supplies[i]; + + ret = devm_regulator_bulk_get(priv->dev, priv->num_regs, priv->regs); + if (ret) + return ret; + + priv->vbus = devm_regulator_get_optional(priv->dev, "vbus"); + if (IS_ERR(priv->vbus)) + return PTR_ERR(priv->vbus); + + return 0; +} + +static int qcom_ssphy_init_reset(struct ssphy_priv *priv) +{ + priv->reset_com = devm_reset_control_get_optional(priv->dev, "com"); + if (IS_ERR(priv->reset_com)) { + dev_err(priv->dev, "Failed to get reset control com\n"); + return PTR_ERR(priv->reset_com); + } + + if (priv->reset_com) { + /* if reset_com is present, reset_phy is no longer optional */ + priv->reset_phy = devm_reset_control_get(priv->dev, "phy"); + if (IS_ERR(priv->reset_phy)) { + dev_err(priv->dev, "Failed to get reset control phy\n"); + return PTR_ERR(priv->reset_phy); + } + } + + return 0; +} + +static int qcom_ssphy_set_mode(struct phy *phy, enum phy_mode mode, int submode) +{ + struct ssphy_priv *priv = phy_get_drvdata(phy); + + if (!priv->vbus) + return 0; + + if (mode != PHY_MODE_USB_HOST && mode != PHY_MODE_USB_DEVICE) + return -EINVAL; + + priv->mode = mode; + + dev_dbg(priv->dev, "mode %d", mode); + + return qcom_ssphy_vbus_ctrl(priv->vbus, priv->mode); +} + +static const struct phy_ops qcom_ssphy_ops = { + .set_mode = qcom_ssphy_set_mode, + .power_off = qcom_ssphy_power_off, + .power_on = qcom_ssphy_power_on, + .owner = THIS_MODULE, +}; + +static int qcom_ssphy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct phy_provider *provider; + struct ssphy_priv *priv; + struct resource *res; + struct phy *phy; + int ret; + + priv = devm_kzalloc(dev, sizeof(struct ssphy_priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = dev; + priv->mode = PHY_MODE_INVALID; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->base = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->base)) + return PTR_ERR(priv->base); + + ret = qcom_ssphy_init_clock(priv); + if (ret) + return ret; + + ret = qcom_ssphy_init_reset(priv); + if (ret) + return ret; + + ret = qcom_ssphy_init_regulator(priv); + if (ret) + return ret; + + phy = devm_phy_create(dev, dev->of_node, &qcom_ssphy_ops); + if (IS_ERR(phy)) { + dev_err(dev, "Failed to create the SS phy\n"); + return PTR_ERR(phy); + } + + phy_set_drvdata(phy, priv); + + provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(provider); +} + +static const struct of_device_id qcom_ssphy_match[] = { + { .compatible = "qcom,usb-ssphy", }, + { }, +}; +MODULE_DEVICE_TABLE(of, qcom_ssphy_match); + +static struct platform_driver qcom_ssphy_driver = { + .probe = qcom_ssphy_probe, + .driver = { + .name = "qcom_usb_ssphy", + .of_match_table = qcom_ssphy_match, + }, +}; +module_platform_driver(qcom_ssphy_driver); + +MODULE_DESCRIPTION("Qualcomm Super-Speed USB PHY driver"); +MODULE_LICENSE("GPL v2");