/*
* isp1301_omap - ISP 1301 USB transceiver, talking to OMAP OTG controller
*
* Copyright (C) 2004 Texas Instruments
* Copyright (C) 2004 David Brownell
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb.h>
#include <linux/usb/otg.h>
#include <linux/i2c.h>
#include <linux/workqueue.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <mach/mux.h>
#include <mach/usb.h>
#undef VERBOSE
#define DRIVER_VERSION "24 August 2004"
#define DRIVER_NAME (isp1301_driver.driver.name)
MODULE_DESCRIPTION("ISP1301 USB OTG Transceiver Driver");
MODULE_LICENSE("GPL");
struct isp1301 {
struct usb_phy phy;
struct i2c_client *client;
void (*i2c_release)(struct device *dev);
int irq_type;
u32 last_otg_ctrl;
unsigned working:1;
struct timer_list timer;
/* use keventd context to change the state for us */
struct work_struct work;
unsigned long todo;
# define WORK_UPDATE_ISP 0 /* update ISP from OTG */
# define WORK_UPDATE_OTG 1 /* update OTG from ISP */
# define WORK_HOST_RESUME 4 /* resume host */
# define WORK_TIMER 6 /* timer fired */
# define WORK_STOP 7 /* don't resubmit */
};
/* bits in OTG_CTRL */
#define OTG_XCEIV_OUTPUTS \
(OTG_ASESSVLD|OTG_BSESSEND|OTG_BSESSVLD|OTG_VBUSVLD|OTG_ID)
#define OTG_XCEIV_INPUTS \
(OTG_PULLDOWN|OTG_PULLUP|OTG_DRV_VBUS|OTG_PD_VBUS|OTG_PU_VBUS|OTG_PU_ID)
#define OTG_CTRL_BITS \
(OTG_A_BUSREQ|OTG_A_SETB_HNPEN|OTG_B_BUSREQ|OTG_B_HNPEN|OTG_BUSDROP)
/* and OTG_PULLUP is sometimes written */
#define OTG_CTRL_MASK (OTG_DRIVER_SEL| \
OTG_XCEIV_OUTPUTS|OTG_XCEIV_INPUTS| \
OTG_CTRL_BITS)
/*-------------------------------------------------------------------------*/
/* board-specific PM hooks */
#if defined(CONFIG_MACH_OMAP_H2) || defined(CONFIG_MACH_OMAP_H3)
#if defined(CONFIG_TPS65010) || defined(CONFIG_TPS65010_MODULE)
#include <linux/i2c/tps65010.h>
#else
static inline int tps65010_set_vbus_draw(unsigned mA)
{
pr_debug("tps65010: draw %d mA (STUB)\n", mA);
return 0;
}
#endif
static void enable_vbus_draw(struct isp1301 *isp, unsigned mA)
{
int status = tps65010_set_vbus_draw(mA);
if (status < 0)
pr_debug(" VBUS %d mA error %d\n", mA, status);
}
#else
static void enable_vbus_draw(struct isp1301 *isp, unsigned mA)
{
/* H4 controls this by DIP switch S2.4; no soft control.
* ON means the charger is always enabled. Leave it OFF
* unless the OTG port is used only in B-peripheral mode.
*/
}
#endif
static void enable_vbus
| 