1/* linux/include/asm-arm/arch-msm/hsusb.h 2 * 3 * Copyright (C) 2008 Google, Inc. 4 * Author: Brian Swetland <swetland@google.com> 5 * Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved. 6 * 7 * This software is licensed under the terms of the GNU General Public 8 * License version 2, as published by the Free Software Foundation, and 9 * may be copied, distributed, and modified under those terms. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 */ 17 18#ifndef __ASM_ARCH_MSM_HSUSB_H 19#define __ASM_ARCH_MSM_HSUSB_H 20 21#include <linux/extcon.h> 22#include <linux/types.h> 23#include <linux/usb/otg.h> 24#include <linux/clk.h> 25 26/** 27 * OTG control 28 * 29 * OTG_NO_CONTROL Id/VBUS notifications not required. Useful in host 30 * only configuration. 31 * OTG_PHY_CONTROL Id/VBUS notifications comes form USB PHY. 32 * OTG_PMIC_CONTROL Id/VBUS notifications comes from PMIC hardware. 33 * OTG_USER_CONTROL Id/VBUS notifcations comes from User via sysfs. 34 * 35 */ 36enum otg_control_type { 37 OTG_NO_CONTROL = 0, 38 OTG_PHY_CONTROL, 39 OTG_PMIC_CONTROL, 40 OTG_USER_CONTROL, 41}; 42 43/** 44 * PHY used in 45 * 46 * INVALID_PHY Unsupported PHY 47 * CI_45NM_INTEGRATED_PHY Chipidea 45nm integrated PHY 48 * SNPS_28NM_INTEGRATED_PHY Synopsis 28nm integrated PHY 49 * 50 */ 51enum msm_usb_phy_type { 52 INVALID_PHY = 0, 53 CI_45NM_INTEGRATED_PHY, 54 SNPS_28NM_INTEGRATED_PHY, 55}; 56 57#define IDEV_CHG_MAX 1500 58#define IUNIT 100 59 60/** 61 * Different states involved in USB charger detection. 62 * 63 * USB_CHG_STATE_UNDEFINED USB charger is not connected or detection 64 * process is not yet started. 65 * USB_CHG_STATE_WAIT_FOR_DCD Waiting for Data pins contact. 66 * USB_CHG_STATE_DCD_DONE Data pin contact is detected. 67 * USB_CHG_STATE_PRIMARY_DONE Primary detection is completed (Detects 68 * between SDP and DCP/CDP). 69 * USB_CHG_STATE_SECONDARY_DONE Secondary detection is completed (Detects 70 * between DCP and CDP). 71 * USB_CHG_STATE_DETECTED USB charger type is determined. 72 * 73 */ 74enum usb_chg_state { 75 USB_CHG_STATE_UNDEFINED = 0, 76 USB_CHG_STATE_WAIT_FOR_DCD, 77 USB_CHG_STATE_DCD_DONE, 78 USB_CHG_STATE_PRIMARY_DONE, 79 USB_CHG_STATE_SECONDARY_DONE, 80 USB_CHG_STATE_DETECTED, 81}; 82 83/** 84 * USB charger types 85 * 86 * USB_INVALID_CHARGER Invalid USB charger. 87 * USB_SDP_CHARGER Standard downstream port. Refers to a downstream port 88 * on USB2.0 compliant host/hub. 89 * USB_DCP_CHARGER Dedicated charger port (AC charger/ Wall charger). 90 * USB_CDP_CHARGER Charging downstream port. Enumeration can happen and 91 * IDEV_CHG_MAX can be drawn irrespective of USB state. 92 * 93 */ 94enum usb_chg_type { 95 USB_INVALID_CHARGER = 0, 96 USB_SDP_CHARGER, 97 USB_DCP_CHARGER, 98 USB_CDP_CHARGER, 99}; 100 101/** 102 * struct msm_otg_platform_data - platform device data 103 * for msm_otg driver. 104 * @phy_init_seq: PHY configuration sequence values. Value of -1 is reserved as 105 * "do not overwrite default vaule at this address". 106 * @phy_init_sz: PHY configuration sequence size. 107 * @vbus_power: VBUS power on/off routine. 108 * @power_budget: VBUS power budget in mA (0 will be treated as 500mA). 109 * @mode: Supported mode (OTG/peripheral/host). 110 * @otg_control: OTG switch controlled by user/Id pin 111 */ 112struct msm_otg_platform_data { 113 int *phy_init_seq; 114 int phy_init_sz; 115 void (*vbus_power)(bool on); 116 unsigned power_budget; 117 enum usb_dr_mode mode; 118 enum otg_control_type otg_control; 119 enum msm_usb_phy_type phy_type; 120 void (*setup_gpio)(enum usb_otg_state state); 121}; 122 123/** 124 * struct msm_usb_cable - structure for exteternal connector cable 125 * state tracking 126 * @nb: hold event notification callback 127 * @conn: used for notification registration 128 */ 129struct msm_usb_cable { 130 struct notifier_block nb; 131 struct extcon_dev *extcon; 132}; 133 134/** 135 * struct msm_otg: OTG driver data. Shared by HCD and DCD. 136 * @otg: USB OTG Transceiver structure. 137 * @pdata: otg device platform data. 138 * @irq: IRQ number assigned for HSUSB controller. 139 * @clk: clock struct of usb_hs_clk. 140 * @pclk: clock struct of usb_hs_pclk. 141 * @core_clk: clock struct of usb_hs_core_clk. 142 * @regs: ioremapped register base address. 143 * @inputs: OTG state machine inputs(Id, SessValid etc). 144 * @sm_work: OTG state machine work. 145 * @in_lpm: indicates low power mode (LPM) state. 146 * @async_int: Async interrupt arrived. 147 * @cur_power: The amount of mA available from downstream port. 148 * @chg_work: Charger detection work. 149 * @chg_state: The state of charger detection process. 150 * @chg_type: The type of charger attached. 151 * @dcd_retires: The retry count used to track Data contact 152 * detection process. 153 * @manual_pullup: true if VBUS is not routed to USB controller/phy 154 * and controller driver therefore enables pull-up explicitly before 155 * starting controller using usbcmd run/stop bit. 156 * @vbus: VBUS signal state trakining, using extcon framework 157 * @id: ID signal state trakining, using extcon framework 158 * @switch_gpio: Descriptor for GPIO used to control external Dual 159 * SPDT USB Switch. 160 * @reboot: Used to inform the driver to route USB D+/D- line to Device 161 * connector 162 */ 163struct msm_otg { 164 struct usb_phy phy; 165 struct msm_otg_platform_data *pdata; 166 int irq; 167 struct clk *clk; 168 struct clk *pclk; 169 struct clk *core_clk; 170 void __iomem *regs; 171#define ID 0 172#define B_SESS_VLD 1 173 unsigned long inputs; 174 struct work_struct sm_work; 175 atomic_t in_lpm; 176 int async_int; 177 unsigned cur_power; 178 int phy_number; 179 struct delayed_work chg_work; 180 enum usb_chg_state chg_state; 181 enum usb_chg_type chg_type; 182 u8 dcd_retries; 183 struct regulator *v3p3; 184 struct regulator *v1p8; 185 struct regulator *vddcx; 186 187 struct reset_control *phy_rst; 188 struct reset_control *link_rst; 189 int vdd_levels[3]; 190 191 bool manual_pullup; 192 193 struct msm_usb_cable vbus; 194 struct msm_usb_cable id; 195 196 struct gpio_desc *switch_gpio; 197 struct notifier_block reboot; 198}; 199 200#endif 201