181 lines
4.7 KiB
C
181 lines
4.7 KiB
C
|
/*
|
||
|
|
* Intel MID (Langwell/Penwell) USB OTG Transceiver driver
|
||
|
|
* Copyright (C) 2008 - 2010, Intel Corporation.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms and conditions of the GNU General Public License,
|
||
|
|
* version 2, as published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
||
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||
|
|
* more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License along with
|
||
|
|
* this program; if not, write to the Free Software Foundation, Inc.,
|
||
|
|
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __INTEL_MID_OTG_H
|
||
|
|
#define __INTEL_MID_OTG_H
|
||
|
|
|
||
|
|
#include <linux/pm.h>
|
||
|
|
#include <linux/usb/otg.h>
|
||
|
|
#include <linux/notifier.h>
|
||
|
|
|
||
|
|
struct intel_mid_otg_xceiv;
|
||
|
|
|
||
|
|
/* This is a common data structure for Intel MID platform to
|
||
|
|
* save values of the OTG state machine */
|
||
|
|
struct otg_hsm {
|
||
|
|
/* Input */
|
||
|
|
int a_bus_resume;
|
||
|
|
int a_bus_suspend;
|
||
|
|
int a_conn;
|
||
|
|
int a_sess_vld;
|
||
|
|
int a_srp_det;
|
||
|
|
int a_vbus_vld;
|
||
|
|
int b_bus_resume;
|
||
|
|
int b_bus_suspend;
|
||
|
|
int b_conn;
|
||
|
|
int b_se0_srp;
|
||
|
|
int b_ssend_srp;
|
||
|
|
int b_sess_end;
|
||
|
|
int b_sess_vld;
|
||
|
|
int id;
|
||
|
|
/* id values */
|
||
|
|
#define ID_B 0x05
|
||
|
|
#define ID_A 0x04
|
||
|
|
#define ID_ACA_C 0x03
|
||
|
|
#define ID_ACA_B 0x02
|
||
|
|
#define ID_ACA_A 0x01
|
||
|
|
int power_up;
|
||
|
|
int adp_change;
|
||
|
|
int test_device;
|
||
|
|
|
||
|
|
/* Internal variables */
|
||
|
|
int a_set_b_hnp_en;
|
||
|
|
int b_srp_done;
|
||
|
|
int b_hnp_enable;
|
||
|
|
int hnp_poll_enable;
|
||
|
|
|
||
|
|
/* Timeout indicator for timers */
|
||
|
|
int a_wait_vrise_tmout;
|
||
|
|
int a_wait_bcon_tmout;
|
||
|
|
int a_aidl_bdis_tmout;
|
||
|
|
int a_bidl_adis_tmout;
|
||
|
|
int a_bidl_adis_tmr;
|
||
|
|
int a_wait_vfall_tmout;
|
||
|
|
int b_ase0_brst_tmout;
|
||
|
|
int b_bus_suspend_tmout;
|
||
|
|
int b_srp_init_tmout;
|
||
|
|
int b_srp_fail_tmout;
|
||
|
|
int b_srp_fail_tmr;
|
||
|
|
int b_adp_sense_tmout;
|
||
|
|
|
||
|
|
/* Informative variables */
|
||
|
|
int a_bus_drop;
|
||
|
|
int a_bus_req;
|
||
|
|
int a_clr_err;
|
||
|
|
int b_bus_req;
|
||
|
|
int a_suspend_req;
|
||
|
|
int b_bus_suspend_vld;
|
||
|
|
|
||
|
|
/* Output */
|
||
|
|
int drv_vbus;
|
||
|
|
int loc_conn;
|
||
|
|
int loc_sof;
|
||
|
|
|
||
|
|
/* Others */
|
||
|
|
int vbus_srp_up;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* must provide ULPI access function to read/write registers implemented in
|
||
|
|
* ULPI address space */
|
||
|
|
struct iotg_ulpi_access_ops {
|
||
|
|
int (*read)(struct intel_mid_otg_xceiv *iotg, u8 reg, u8 *val);
|
||
|
|
int (*write)(struct intel_mid_otg_xceiv *iotg, u8 reg, u8 val);
|
||
|
|
};
|
||
|
|
|
||
|
|
#define OTG_A_DEVICE 0x0
|
||
|
|
#define OTG_B_DEVICE 0x1
|
||
|
|
|
||
|
|
/*
|
||
|
|
* the Intel MID (Langwell/Penwell) otg transceiver driver needs to interact
|
||
|
|
* with device and host drivers to implement the USB OTG related feature. More
|
||
|
|
* function members are added based on otg_transceiver data structure for this
|
||
|
|
* purpose.
|
||
|
|
*/
|
||
|
|
struct intel_mid_otg_xceiv {
|
||
|
|
struct otg_transceiver otg;
|
||
|
|
struct otg_hsm hsm;
|
||
|
|
|
||
|
|
/* base address */
|
||
|
|
void __iomem *base;
|
||
|
|
|
||
|
|
/* ops to access ulpi */
|
||
|
|
struct iotg_ulpi_access_ops ulpi_ops;
|
||
|
|
|
||
|
|
/* atomic notifier for interrupt context */
|
||
|
|
struct atomic_notifier_head iotg_notifier;
|
||
|
|
|
||
|
|
/* start/stop USB Host function */
|
||
|
|
int (*start_host)(struct intel_mid_otg_xceiv *iotg);
|
||
|
|
int (*stop_host)(struct intel_mid_otg_xceiv *iotg);
|
||
|
|
|
||
|
|
/* start/stop USB Peripheral function */
|
||
|
|
int (*start_peripheral)(struct intel_mid_otg_xceiv *iotg);
|
||
|
|
int (*stop_peripheral)(struct intel_mid_otg_xceiv *iotg);
|
||
|
|
|
||
|
|
/* start/stop ADP sense/probe function */
|
||
|
|
int (*set_adp_probe)(struct intel_mid_otg_xceiv *iotg,
|
||
|
|
bool enabled, int dev);
|
||
|
|
int (*set_adp_sense)(struct intel_mid_otg_xceiv *iotg,
|
||
|
|
bool enabled);
|
||
|
|
|
||
|
|
#ifdef CONFIG_PM
|
||
|
|
/* suspend/resume USB host function */
|
||
|
|
int (*suspend_host)(struct intel_mid_otg_xceiv *iotg,
|
||
|
|
pm_message_t message);
|
||
|
|
int (*resume_host)(struct intel_mid_otg_xceiv *iotg);
|
||
|
|
|
||
|
|
int (*suspend_peripheral)(struct intel_mid_otg_xceiv *iotg,
|
||
|
|
pm_message_t message);
|
||
|
|
int (*resume_peripheral)(struct intel_mid_otg_xceiv *iotg);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
};
|
||
|
|
static inline
|
||
|
|
struct intel_mid_otg_xceiv *otg_to_mid_xceiv(struct otg_transceiver *otg)
|
||
|
|
{
|
||
|
|
return container_of(otg, struct intel_mid_otg_xceiv, otg);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define MID_OTG_NOTIFY_CONNECT 0x0001
|
||
|
|
#define MID_OTG_NOTIFY_DISCONN 0x0002
|
||
|
|
#define MID_OTG_NOTIFY_HSUSPEND 0x0003
|
||
|
|
#define MID_OTG_NOTIFY_HRESUME 0x0004
|
||
|
|
#define MID_OTG_NOTIFY_CSUSPEND 0x0005
|
||
|
|
#define MID_OTG_NOTIFY_CRESUME 0x0006
|
||
|
|
#define MID_OTG_NOTIFY_HOSTADD 0x0007
|
||
|
|
#define MID_OTG_NOTIFY_HOSTREMOVE 0x0008
|
||
|
|
#define MID_OTG_NOTIFY_CLIENTADD 0x0009
|
||
|
|
#define MID_OTG_NOTIFY_CLIENTREMOVE 0x000a
|
||
|
|
|
||
|
|
static inline int
|
||
|
|
intel_mid_otg_register_notifier(struct intel_mid_otg_xceiv *iotg,
|
||
|
|
struct notifier_block *nb)
|
||
|
|
{
|
||
|
|
return atomic_notifier_chain_register(&iotg->iotg_notifier, nb);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
intel_mid_otg_unregister_notifier(struct intel_mid_otg_xceiv *iotg,
|
||
|
|
struct notifier_block *nb)
|
||
|
|
{
|
||
|
|
atomic_notifier_chain_unregister(&iotg->iotg_notifier, nb);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* __INTEL_MID_OTG_H */
|