1
0
mirror of git://projects.qi-hardware.com/openwrt-xburst.git synced 2024-12-11 16:44:04 +02:00
openwrt-xburst/target/linux/xburst/files-2.6.27/drivers/usb/musb/jz4760.c
Mirko Vogt dc3d3f1c49 yet another patchset - 2.6.27
it's basically also provided by ingenic and nativly based on 2.6.27,
adjusted to fit into the OpenWrt-environment
2009-10-28 03:13:11 +08:00

110 lines
2.7 KiB
C

/*
* Copyright (C) 2005-2007 by Texas Instruments
* Some code has been taken from tusb6010.c
* Copyrights for that are attributable to:
* Copyright (C) 2006 Nokia Corporation
* Jarkko Nikula <jarkko.nikula@nokia.com>
* Tony Lindgren <tony@atomide.com>
*
* This file is part of the Inventra Controller Driver for Linux.
*
* The Inventra Controller Driver for Linux is free software; you
* can redistribute it and/or modify it under the terms of the GNU
* General Public License version 2 as published by the Free Software
* Foundation.
*
* The Inventra Controller Driver for Linux 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 The Inventra Controller Driver for Linux ; if not,
* write to the Free Software Foundation, Inc., 59 Temple Place,
* Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/clk.h>
#include <linux/io.h>
#include "musb_core.h"
#define MUSB_TIMEOUT_A_WAIT_BCON 1100
/* Hooks we hasn't used yet. */
void musb_platform_enable(struct musb *musb)
{
return;
}
void musb_platform_disable(struct musb *musb)
{
return;
}
void musb_platform_set_mode(struct musb *musb, u8 musb_mode)
{
return;
}
/* Code copied form omap2430.c */
static void jz4760_set_vbus(struct musb *musb, int is_on)
{
u8 devctl;
/* HDRC controls CPEN, but beware current surges during device
* connect. They can trigger transient overcurrent conditions
* that must be ignored.
*/
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
if (is_on) {
musb->is_active = 1;
musb->xceiv.default_a = 1;
musb->xceiv.state = OTG_STATE_A_WAIT_VRISE;
devctl |= MUSB_DEVCTL_SESSION;
MUSB_HST_MODE(musb);
} else {
musb->is_active = 0;
/* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
* jumping right to B_IDLE...
*/
musb->xceiv.default_a = 0;
musb->xceiv.state = OTG_STATE_B_IDLE;
devctl &= ~MUSB_DEVCTL_SESSION;
MUSB_DEV_MODE(musb);
}
musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
DBG(1, "VBUS %s, devctl %02x "
/* otg %3x conf %08x prcm %08x */ "\n",
otg_state_string(musb),
musb_readb(musb->mregs, MUSB_DEVCTL));
}
int __init musb_platform_init(struct musb *musb)
{
if (is_host_enabled(musb))
musb->board_set_vbus = jz4760_set_vbus;
musb->a_wait_bcon = MUSB_TIMEOUT_A_WAIT_BCON;
return 0;
}
int musb_platform_exit(struct musb *musb)
{
return 0;
}