173 lines
4.7 KiB
C
173 lines
4.7 KiB
C
/* Copyright (c) 2009-2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __LINUX_USB_GADGET_MSM72K_OTG_H__
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#define __LINUX_USB_GADGET_MSM72K_OTG_H__
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#include <linux/usb.h>
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#include <linux/usb/gadget.h>
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#include <linux/usb/otg.h>
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#include <linux/wakelock.h>
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#include <mach/msm_hsusb.h>
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#include <asm/mach-types.h>
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#include <mach/msm_hsusb.h>
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#define OTGSC_BSVIE (1 << 27)
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#define OTGSC_IDIE (1 << 24)
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#define OTGSC_IDPU (1 << 5)
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#define OTGSC_BSVIS (1 << 19)
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#define OTGSC_ID (1 << 8)
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#define OTGSC_IDIS (1 << 16)
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#define OTGSC_BSV (1 << 11)
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#define OTGSC_DPIE (1 << 30)
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#define OTGSC_DPIS (1 << 22)
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#define OTGSC_HADP (1 << 6)
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#define OTGSC_IDPU (1 << 5)
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#define ULPI_STP_CTRL (1 << 30)
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#define ASYNC_INTR_CTRL (1 << 29)
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#define ULPI_SYNC_STATE (1 << 27)
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#define PORTSC_PHCD (1 << 23)
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#define PORTSC_CSC (1 << 1)
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#define disable_phy_clk() (writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC))
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#define enable_phy_clk() (writel(readl(USB_PORTSC) & ~PORTSC_PHCD, USB_PORTSC))
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#define is_phy_clk_disabled() (readl(USB_PORTSC) & PORTSC_PHCD)
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#define is_phy_active() (readl_relaxed(USB_ULPI_VIEWPORT) &\
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ULPI_SYNC_STATE)
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#define is_usb_active() (!(readl(USB_PORTSC) & PORTSC_SUSP))
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/* Timeout (in msec) values (min - max) associated with OTG timers */
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#define TA_WAIT_VRISE 100 /* ( - 100) */
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#define TA_WAIT_VFALL 500 /* ( - 1000) */
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/*
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* This option is set for embedded hosts or OTG devices in which leakage
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* currents are very minimal.
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*/
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#ifdef CONFIG_MSM_OTG_ENABLE_A_WAIT_BCON_TIMEOUT
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#define TA_WAIT_BCON 30000 /* (1100 - 30000) */
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#else
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#define TA_WAIT_BCON -1
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#endif
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/* AIDL_BDIS should be 500 */
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#define TA_AIDL_BDIS 200 /* (200 - ) */
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#define TA_BIDL_ADIS 155 /* (155 - 200) */
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#define TB_SRP_FAIL 6000 /* (5000 - 6000) */
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#define TB_ASE0_BRST 155 /* (155 - ) */
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/* TB_SSEND_SRP and TB_SE0_SRP are combined */
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#define TB_SRP_INIT 2000 /* (1500 - ) */
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/* Timeout variables */
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#define A_WAIT_VRISE 0
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#define A_WAIT_VFALL 1
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#define A_WAIT_BCON 2
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#define A_AIDL_BDIS 3
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#define A_BIDL_ADIS 4
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#define B_SRP_FAIL 5
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#define B_ASE0_BRST 6
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/* Internal flags like a_set_b_hnp_en, b_hnp_en are maintained
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* in usb_bus and usb_gadget
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*/
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#define A_BUS_DROP 0
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#define A_BUS_REQ 1
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#define A_SRP_DET 2
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#define A_VBUS_VLD 3
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#define B_CONN 4
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#define ID 5
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#define ADP_CHANGE 6
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#define POWER_UP 7
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#define A_CLR_ERR 8
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#define A_BUS_RESUME 9
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#define A_BUS_SUSPEND 10
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#define A_CONN 11
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#define B_BUS_REQ 12
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#define B_SESS_VLD 13
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#define ID_A 14
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#define ID_B 15
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#define ID_C 16
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#define USB_IDCHG_MIN 500
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#define USB_IDCHG_MAX 1500
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#define USB_IB_UNCFG 2
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#define OTG_ID_POLL_MS 1000
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struct msm_otg {
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struct usb_phy phy;
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/* usb clocks */
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struct clk *alt_core_clk;
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struct clk *iface_clk;
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struct clk *core_clk;
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/* clk regime has created dummy clock id for phy so
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* that generic clk_reset api can be used to reset phy
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*/
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struct clk *phy_reset_clk;
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int irq;
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int vbus_on_irq;
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int id_irq;
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void __iomem *regs;
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atomic_t in_lpm;
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/* charger-type is modified by gadget for legacy chargers
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* and OTG modifies it for ACA
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*/
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atomic_t chg_type;
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void (*start_host) (struct usb_bus *bus, int suspend);
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/* Enable/disable the clocks */
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int (*set_clk) (struct usb_phy *phy, int on);
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/* Reset phy and link */
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void (*reset) (struct usb_phy *phy, int phy_reset);
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/* pmic notfications apis */
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u8 pmic_vbus_notif_supp;
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u8 pmic_id_notif_supp;
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struct msm_otg_platform_data *pdata;
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spinlock_t lock; /* protects OTG state */
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struct wake_lock wlock;
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unsigned long b_last_se0_sess; /* SRP initial condition check */
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unsigned long inputs;
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unsigned long tmouts;
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u8 active_tmout;
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struct hrtimer timer;
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struct workqueue_struct *wq;
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struct work_struct sm_work; /* state machine work */
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struct work_struct otg_resume_work;
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struct notifier_block usbdev_nb;
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struct msm_xo_voter *xo_handle; /*handle to vote for TCXO D1 buffer*/
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unsigned curr_power;
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#ifdef CONFIG_USB_MSM_ACA
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struct timer_list id_timer; /* drives id_status polling */
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unsigned b_max_power; /* ACA: max power of accessory*/
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#endif
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};
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static inline int can_phy_power_collapse(struct msm_otg *dev)
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{
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if (!dev || !dev->pdata)
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return -ENODEV;
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return dev->pdata->phy_can_powercollapse;
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}
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#endif
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