From patchwork Thu May 14 06:22:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nagarjuna Kristam X-Patchwork-Id: 11548005 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 82E36139A for ; Thu, 14 May 2020 06:23:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5D730206DC for ; Thu, 14 May 2020 06:23:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="akVZA3vG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726201AbgENGXO (ORCPT ); Thu, 14 May 2020 02:23:14 -0400 Received: from hqnvemgate25.nvidia.com ([216.228.121.64]:17931 "EHLO hqnvemgate25.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726146AbgENGXN (ORCPT ); Thu, 14 May 2020 02:23:13 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate25.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Wed, 13 May 2020 23:21:57 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Wed, 13 May 2020 23:23:12 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Wed, 13 May 2020 23:23:12 -0700 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Thu, 14 May 2020 06:23:12 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Thu, 14 May 2020 06:23:12 +0000 Received: from nkristam-ubuntu.nvidia.com (Not Verified[10.19.67.128]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Wed, 13 May 2020 23:23:11 -0700 From: Nagarjuna Kristam To: , , , , , , CC: , , , , Nagarjuna Kristam Subject: [PATCH V3 6/8] phy: tegra: xusb: Add support for charger detect Date: Thu, 14 May 2020 11:52:41 +0530 Message-ID: <1589437363-16727-7-git-send-email-nkristam@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1589437363-16727-1-git-send-email-nkristam@nvidia.com> References: <1589437363-16727-1-git-send-email-nkristam@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1589437317; bh=DHQCoMTpPaBKlgj/fy/nZuE9jo4cupP+zDlNDoow9Zw=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=akVZA3vGFhLqTmOZvgoaAUX6/pxRvrbKr2JBGGIxKqB+xbO/xecL4imjpSCj5A+kL 24y90w5Eq47isBYDDepCRNL6pgUidm3tdHx4pa5Rr/jyZtAicVgHKnrdfwLk8s+Pf9 zsYlP4U9M7C59sCpxE4JadLFC5fAA5vLscsmRTupE9xhoM6cHDJadC2M28Mldk9oez yNDr290LmSdVNiKmDCba49cYRqD6jrysg1ajAc2127+dtT0hvTLAjpr0bRZTIXB98Z vCp8VU+TOnkZ3CFxtB9fJQf3EQQA/Ga7Ah8EZt/Ti2+UpSfjpk4xlsw9XCnQpDz7sS 3O6zk+Lzpgcsw== Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Perform charger-detect operation if corresponding dt property is enabled. Update usb-phy with the detected charger state and max current values. Register charger-detect API's of usb-phy to provide needed functionalities. Signed-off-by: Nagarjuna Kristam Acked-by: Thierry Reding --- V3: - Allighed functions and its arguments. - replaced spaced by tabs for MACRO definition allignments. - Unified primary and secondary charger detect API's. - Used readl_poll_timeout instead of while loop condition check for register. - Fixed other comments as per inputs from Thierry. --- V2: - Patch re-based. --- drivers/phy/tegra/Makefile | 2 +- drivers/phy/tegra/cd.c | 283 +++++++++++++++++++++++++++++++++++++++++++++ drivers/phy/tegra/xusb.c | 80 +++++++++++++ drivers/phy/tegra/xusb.h | 7 ++ 4 files changed, 371 insertions(+), 1 deletion(-) create mode 100644 drivers/phy/tegra/cd.c diff --git a/drivers/phy/tegra/Makefile b/drivers/phy/tegra/Makefile index 89b8406..befdfc4 100644 --- a/drivers/phy/tegra/Makefile +++ b/drivers/phy/tegra/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0-only obj-$(CONFIG_PHY_TEGRA_XUSB) += phy-tegra-xusb.o -phy-tegra-xusb-y += xusb.o +phy-tegra-xusb-y += xusb.o cd.o phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_124_SOC) += xusb-tegra124.o phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_132_SOC) += xusb-tegra124.o phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_210_SOC) += xusb-tegra210.o diff --git a/drivers/phy/tegra/cd.c b/drivers/phy/tegra/cd.c new file mode 100644 index 0000000..fddbe4c --- /dev/null +++ b/drivers/phy/tegra/cd.c @@ -0,0 +1,283 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved. + */ + +#include +#include +#include +#include +#include + +#include "xusb.h" + +/* Data contact detection timeout */ +#define TDCD_TIMEOUT_MS 400 + +#define USB2_BATTERY_CHRG_OTGPADX_CTL0(x) (0x80 + (x) * 0x40) +#define PD_CHG (1 << 0) +#define VDCD_DET_FILTER_EN (1 << 4) +#define VDAT_DET (1 << 5) +#define VDAT_DET_FILTER_EN (1 << 8) +#define OP_SINK_EN (1 << 9) +#define OP_SRC_EN (1 << 10) +#define ON_SINK_EN (1 << 11) +#define ON_SRC_EN (1 << 12) +#define OP_I_SRC_EN (1 << 13) +#define ZIP_FILTER_EN (1 << 21) +#define ZIN_FILTER_EN (1 << 25) +#define DCD_DETECTED (1 << 26) + +#define USB2_BATTERY_CHRG_OTGPADX_CTL1(x) (0x84 + (x) * 0x40) +#define PD_VREG (1 << 6) +#define VREG_LEV(x) (((x) & 0x3) << 7) +#define VREG_DIR(x) (((x) & 0x3) << 11) +#define VREG_DIR_IN VREG_DIR(1) +#define VREG_DIR_OUT VREG_DIR(2) +#define USBOP_RPD_OVRD (1 << 16) +#define USBOP_RPD_OVRD_VAL (1 << 17) +#define USBOP_RPU_OVRD (1 << 18) +#define USBOP_RPU_OVRD_VAL (1 << 19) +#define USBON_RPD_OVRD (1 << 20) +#define USBON_RPD_OVRD_VAL (1 << 21) +#define USBON_RPU_OVRD (1 << 22) +#define USBON_RPU_OVRD_VAL (1 << 23) + +#define XUSB_PADCTL_USB2_OTG_PADX_CTL0(x) (0x88 + (x) * 0x40) +#define USB2_OTG_PD2 (1 << 27) +#define USB2_OTG_PD2_OVRD_EN (1 << 28) +#define USB2_OTG_PD_ZI (1 << 29) + +#define XUSB_PADCTL_USB2_BATTERY_CHRG_TDCD_DBNC_TIMER_0 (0x280) +#define TDCD_DBNC(x) (((x) & 0x7ff) << 0) + +static void +tegra_xusb_padctl_set_debounce_time(struct tegra_xusb_padctl *padctl, + u32 debounce) +{ + u32 value; + + value = padctl_readl(padctl, + XUSB_PADCTL_USB2_BATTERY_CHRG_TDCD_DBNC_TIMER_0); + value &= ~(TDCD_DBNC(0)); + value |= TDCD_DBNC(debounce); + padctl_writel(padctl, value, + XUSB_PADCTL_USB2_BATTERY_CHRG_TDCD_DBNC_TIMER_0); +} + +static void +tegra_xusb_padctl_charger_detect_on(struct tegra_xusb_padctl *padctl, u32 index) +{ + u32 value; + + value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index)); + value &= ~USB2_OTG_PD_ZI; + padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index)); + + value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index)); + value |= (USB2_OTG_PD2 | USB2_OTG_PD2_OVRD_EN); + padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index)); + + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + value &= ~PD_CHG; + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + + /* Set DP/DN Pull up/down to zero by default */ + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL1(index)); + value &= ~(USBOP_RPD_OVRD_VAL | USBOP_RPU_OVRD_VAL | + USBON_RPD_OVRD_VAL | USBON_RPU_OVRD_VAL); + value |= (USBOP_RPD_OVRD | USBOP_RPU_OVRD | + USBON_RPD_OVRD | USBON_RPU_OVRD); + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL1(index)); + + /* Disable DP/DN as src/sink */ + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + value &= ~(OP_SRC_EN | ON_SINK_EN | + ON_SRC_EN | OP_SINK_EN); + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); +} + +static void +tegra_xusb_padctl_charger_detect_off(struct tegra_xusb_padctl *padctl, + u32 index) +{ + u32 value; + + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL1(index)); + value &= ~(USBOP_RPD_OVRD | USBOP_RPU_OVRD | + USBON_RPD_OVRD | USBON_RPU_OVRD); + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL1(index)); + + /* power down necessary stuff */ + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + value |= PD_CHG; + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + + value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index)); + value &= ~(USB2_OTG_PD2 | USB2_OTG_PD2_OVRD_EN); + padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index)); +} + + +static void tegra_xusb_padctl_detect_filters(struct tegra_xusb_padctl *padctl, + u32 index, bool on) +{ + u32 value; + + if (on) { + value = padctl_readl(padctl, + USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + value |= (VDCD_DET_FILTER_EN | VDAT_DET_FILTER_EN | + ZIP_FILTER_EN | ZIN_FILTER_EN); + padctl_writel(padctl, value, + USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + } else { + value = padctl_readl(padctl, + USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + value &= ~(VDCD_DET_FILTER_EN | VDAT_DET_FILTER_EN | + ZIP_FILTER_EN | ZIN_FILTER_EN); + padctl_writel(padctl, value, + USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + } +} + +static void tegra_xusb_padctl_dcd(struct tegra_xusb_padctl *padctl, u32 index) +{ + u32 value; + unsigned int offset; + bool ret = false; + + /* Turn on IDP_SRC */ + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + value |= OP_I_SRC_EN; + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + + /* Turn on D- pull-down resistor */ + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL1(index)); + value |= USBON_RPD_OVRD_VAL; + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL1(index)); + + /* Wait for TDCD_DBNC (DCD debounce), refer to BC1.2 spec Table 5 */ + usleep_range(10000, 20000); + + offset = USB2_BATTERY_CHRG_OTGPADX_CTL0(index); + ret = readl_poll_timeout(padctl->regs + offset, value, + value & DCD_DETECTED, 20000, + TDCD_TIMEOUT_MS * 1000); + if (!ret) + dev_warn(padctl->dev, "%s: DCD timeout.", __func__); + + /* Turn off IP_SRC, clear DCD DETECTED*/ + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + value &= ~OP_I_SRC_EN; + value |= DCD_DETECTED; + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + + /* Turn off D- pull-down resistor */ + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL1(index)); + value &= ~USBON_RPD_OVRD_VAL; + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL1(index)); + + dev_dbg(padctl->dev, "DCD detected: %d\n", !ret); +} + +static bool +tegra_xusb_padctl_primary_secondary(struct tegra_xusb_padctl *padctl, u32 index, + bool is_primary) +{ + u32 value; + u32 config = is_primary ? (OP_SRC_EN | ON_SINK_EN) : + (ON_SRC_EN | OP_SINK_EN); + bool ret = false; + + if (is_primary) + /* data contact detection */ + tegra_xusb_padctl_dcd(padctl, index); + + /* Source D- to D+ */ + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + value |= config; + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + + /* + * Wait for TVDPSRC_ON/TVDMSRC_ON(D+/- voltage source on time), + * refer to BC1.2 spec Table 5 + */ + msleep(40); + + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + if (is_primary) + ret = !!(value & VDAT_DET); + else + ret = !(value & VDAT_DET); + + /* Turn off ON_SRC, OP_SINK, clear VDAT, ZIP status change */ + value = padctl_readl(padctl, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + value &= ~config; + padctl_writel(padctl, value, USB2_BATTERY_CHRG_OTGPADX_CTL0(index)); + + return ret; +} + +static const char *const chrg_types[] = { + [UNKNOWN_TYPE] = "Unknown Type", + [SDP_TYPE] = "SDP Type", + [DCP_TYPE] = "DCP Type", + [CDP_TYPE] = "CDP Type", + [ACA_TYPE] = "ACA Type", +}; + +enum usb_charger_type +tegra_xusb_padctl_charger_detect(struct tegra_xusb_port *port) +{ + struct tegra_xusb_padctl *padctl = port->padctl; + struct phy *phy = port->lane->pad->lanes[port->index]; + struct tegra_xusb_usb2_lane *usb2 = to_usb2_lane(port->lane); + u32 index = port->index; + enum usb_charger_type chrg_type; + bool pad_power_off = false; + + mutex_lock(&padctl->lock); + + if (!usb2->powered_on) { + padctl->soc->ops->utmi_pad_power_on(phy); + pad_power_off = true; + } + + tegra_xusb_padctl_charger_detect_on(padctl, index); + tegra_xusb_padctl_set_debounce_time(padctl, 10); + tegra_xusb_padctl_detect_filters(padctl, index, true); + + if (tegra_xusb_padctl_primary_secondary(padctl, index, true)) { + /* + * wait 20ms (max of TVDMSRC_DIS) for D- to be disabled + * from host side, before we perform secondary detection. + * Some hosts may not respond well if we do secondary + * detection right after primary detection. + */ + msleep(20); + + if (tegra_xusb_padctl_primary_secondary(padctl, index, false)) + chrg_type = CDP_TYPE; + else + chrg_type = DCP_TYPE; + } else { + chrg_type = SDP_TYPE; + } + + dev_dbg(&port->dev, "charger detected of type %s", + chrg_types[chrg_type]); + + tegra_xusb_padctl_detect_filters(padctl, index, false); + tegra_xusb_padctl_charger_detect_off(padctl, index); + + if (pad_power_off) + padctl->soc->ops->utmi_pad_power_down(phy); + + mutex_unlock(&padctl->lock); + return chrg_type; +} + +MODULE_AUTHOR("Nagarjuna Kristam "); +MODULE_DESCRIPTION("NVIDIA Tegra186 XUSB charger detect driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c index de4a46f..7252982 100644 --- a/drivers/phy/tegra/xusb.c +++ b/drivers/phy/tegra/xusb.c @@ -591,6 +591,50 @@ static enum usb_phy_events to_usb_phy_event(enum usb_role role) } } +#define VON_DIV2P0_DET BIT(0) +#define VON_DIV2P7_DET BIT(1) +#define VOP_DIV2P0_DET BIT(2) +#define VOP_DIV2P7_DET BIT(3) + +#define VREG_CUR_LEVEL_0 500 +#define VREG_CUR_LEVEL_1 900 +#define VREG_CUR_LEVEL_2 1500 +#define VREG_CUR_LEVEL_3 2000 + +#define IS_CUR_IN_RANGE(ma, low, high) \ + ((ma >= VREG_CUR_LEVEL_##low) && (ma <= (VREG_CUR_LEVEL_##high - 1))) +#define VREG_LVL(ma, level) IS_CUR_IN_RANGE(ma, level, level + 1) + +static void tegra_xusb_padctl_vbus_pad_portection(struct tegra_xusb_port *port) +{ + struct tegra_xusb_padctl *padctl = port->padctl; + int level = 0; + enum tegra_vbus_dir dir = TEGRA_VBUS_SINK; + int max_ua, min_ua; + + if (!padctl->soc->ops->utmi_pad_set_protection) + return; + + usb_phy_get_charger_current(&port->usb_phy, &min_ua, &max_ua); + + if (max_ua == 0) { + level = -1; + dir = TEGRA_VBUS_DEFAULT; + } else if (VREG_LVL(max_ua, 0)) { + level = 0; + } else if (VREG_LVL(max_ua, 1)) { + level = 1; + } else if (VREG_LVL(max_ua, 2)) { + level = 2; + } else if (max_ua >= VREG_CUR_LEVEL_3) { + level = 3; + } else { + return; + } + + padctl->soc->ops->utmi_pad_set_protection(port, level, dir); +} + static void tegra_xusb_usb_phy_work(struct work_struct *work) { struct tegra_xusb_port *port = container_of(work, @@ -598,6 +642,10 @@ static void tegra_xusb_usb_phy_work(struct work_struct *work) usb_phy_work); enum usb_role role = usb_role_switch_get_role(port->usb_role_sw); + /* Set role to none, if charger is DCP type */ + if (port->chrg_type == DCP_TYPE) + role = USB_ROLE_NONE; + usb_phy_set_event(&port->usb_phy, to_usb_phy_event(role)); dev_dbg(&port->dev, "%s(): calling notifier for role %s\n", __func__, @@ -610,9 +658,26 @@ static int tegra_xusb_role_sw_set(struct usb_role_switch *sw, enum usb_role role) { struct tegra_xusb_port *port = usb_role_switch_get_drvdata(sw); + enum usb_charger_state charger_state; dev_dbg(&port->dev, "%s(): role %s\n", __func__, usb_roles[role]); + /* Do charger detect if role is Device and charger detect is enabled */ + if (port->charger_detect) { + if (role == USB_ROLE_DEVICE) + port->chrg_type = + tegra_xusb_padctl_charger_detect(port); + else + port->chrg_type = UNKNOWN_TYPE; + + charger_state = (port->chrg_type == UNKNOWN_TYPE) ? + USB_CHARGER_ABSENT : USB_CHARGER_PRESENT; + + usb_phy_set_charger_state(&port->usb_phy, charger_state); + + tegra_xusb_padctl_vbus_pad_portection(port); + } + schedule_work(&port->usb_phy_work); return 0; @@ -643,6 +708,14 @@ static int tegra_xusb_set_host(struct usb_otg *otg, struct usb_bus *host) return 0; } +static enum usb_charger_type tegra_xusb_charger_detect(struct usb_phy *usb_phy) +{ + struct tegra_xusb_port *port = container_of(usb_phy, + struct tegra_xusb_port, + usb_phy); + + return port->chrg_type; +} static int tegra_xusb_setup_usb_role_switch(struct tegra_xusb_port *port) { @@ -693,6 +766,9 @@ static int tegra_xusb_setup_usb_role_switch(struct tegra_xusb_port *port) port->usb_phy.otg->set_peripheral = tegra_xusb_set_peripheral; port->usb_phy.otg->set_host = tegra_xusb_set_host; + if (port->charger_detect) + port->usb_phy.charger_detect = tegra_xusb_charger_detect; + err = usb_add_phy_dev(&port->usb_phy); if (err < 0) { dev_err(&port->dev, "Failed to add USB PHY: %d\n", err); @@ -727,6 +803,10 @@ static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2) usb2->mode = USB_DR_MODE_HOST; } + if (port->padctl->soc->supports_charger_detect && + of_property_read_bool(np, "nvidia,charger-detect")) + port->charger_detect = true; + /* usb-role-switch property is mandatory for OTG/Peripheral modes */ if (usb2->mode == USB_DR_MODE_PERIPHERAL || usb2->mode == USB_DR_MODE_OTG) { diff --git a/drivers/phy/tegra/xusb.h b/drivers/phy/tegra/xusb.h index 475bcc6..7b9a798 100644 --- a/drivers/phy/tegra/xusb.h +++ b/drivers/phy/tegra/xusb.h @@ -282,6 +282,9 @@ struct tegra_xusb_port { struct work_struct usb_phy_work; struct usb_phy usb_phy; + bool charger_detect; + enum usb_charger_type chrg_type; + const struct tegra_xusb_port_ops *ops; }; @@ -306,6 +309,9 @@ struct tegra_xusb_port * tegra_xusb_find_port(struct tegra_xusb_padctl *padctl, const char *type, unsigned int index); +enum usb_charger_type tegra_xusb_padctl_charger_detect( + struct tegra_xusb_port *port); + struct tegra_xusb_usb2_port { struct tegra_xusb_port base; @@ -430,6 +436,7 @@ struct tegra_xusb_padctl_soc { unsigned int num_supplies; bool supports_gen2; bool need_fake_usb3_port; + bool supports_charger_detect; }; struct tegra_xusb_padctl {