mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-21 06:10:50 +02:00
1a29ef8e97
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19815 3c298f89-4303-0410-b956-a3cf2f4a3e73
157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/*
|
|
* drivers/usb/musb/ubi32_usb.c
|
|
* Ubicom32 usb controller driver.
|
|
*
|
|
* (C) Copyright 2009, Ubicom, Inc.
|
|
* Copyright (C) 2005-2006 by Texas Instruments
|
|
*
|
|
* Derived from the Texas Instruments Inventra Controller Driver for Linux.
|
|
*
|
|
* This file is part of the Ubicom32 Linux Kernel Port.
|
|
*
|
|
* The Ubicom32 Linux Kernel Port 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.
|
|
*
|
|
* The Ubicom32 Linux Kernel Port 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 Ubicom32 Linux Kernel Port. If not,
|
|
* see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Ubicom32 implementation derived from (with many thanks):
|
|
* arch/m68knommu
|
|
* arch/blackfin
|
|
* arch/parisc
|
|
*/
|
|
#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 <asm/io.h>
|
|
#include <asm/ip5000.h>
|
|
#include "musb_core.h"
|
|
|
|
void musb_platform_enable(struct musb *musb)
|
|
{
|
|
}
|
|
void musb_platform_disable(struct musb *musb)
|
|
{
|
|
}
|
|
|
|
int musb_platform_set_mode(struct musb *musb, u8 musb_mode) {
|
|
return 0;
|
|
}
|
|
|
|
static void ip5k_usb_hcd_vbus_power(struct musb *musb, int is_on, int sleeping)
|
|
{
|
|
}
|
|
|
|
static void ip5k_usb_hcd_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));
|
|
}
|
|
static int ip5k_usb_hcd_set_power(struct otg_transceiver *x, unsigned mA)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int musb_platform_resume(struct musb *musb);
|
|
|
|
int __init musb_platform_init(struct musb *musb)
|
|
{
|
|
|
|
#ifdef CONFIG_UBICOM32_V4
|
|
u32_t chip_id;
|
|
asm volatile (
|
|
"move.4 %0, CHIP_ID \n\t"
|
|
: "=r" (chip_id)
|
|
);
|
|
if (chip_id == 0x30001) {
|
|
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 30);
|
|
udelay(1);
|
|
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 31);
|
|
} else {
|
|
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 17);
|
|
udelay(1);
|
|
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_TEST)) &= ~(1 << 14);
|
|
}
|
|
#endif
|
|
|
|
*((u32_t *)(GENERAL_CFG_BASE + GEN_USB_PHY_CFG)) |= ((1 << 14) | (1 <<15));
|
|
|
|
/* The i-clk is AUTO gated. Hence there is no need
|
|
* to disable it until the driver is shutdown */
|
|
|
|
clk_enable(musb->clock);
|
|
musb_platform_resume(musb);
|
|
|
|
ip5k_usb_hcd_vbus_power(musb, musb->board_mode == MUSB_HOST, 1);
|
|
|
|
if (is_host_enabled(musb))
|
|
musb->board_set_vbus = ip5k_usb_hcd_set_vbus;
|
|
if (is_peripheral_enabled(musb))
|
|
musb->xceiv.set_power = ip5k_usb_hcd_set_power;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int musb_platform_suspend(struct musb *musb)
|
|
{
|
|
return 0;
|
|
}
|
|
int musb_platform_resume(struct musb *musb)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int musb_platform_exit(struct musb *musb)
|
|
{
|
|
ip5k_usb_hcd_vbus_power(musb, 0 /*off*/, 1);
|
|
musb_platform_suspend(musb);
|
|
return 0;
|
|
}
|