mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
29c6fbe047
Signed-off-by: Francesco Rendine <francesco.rendine@valueteam.com> Signed-off-by: Damien Dusha <d.dusha@gmail.com> Signed-off-by: Anatolij Gustschin <agust@denx.de> Coding style cleanup; slight file restructuring. Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Remy Bohmer <linux@bohmer.net>
159 lines
4.2 KiB
C
159 lines
4.2 KiB
C
/*
|
|
* (C) Copyright 2010, Damien Dusha, <d.dusha@gmail.com>
|
|
*
|
|
* (C) Copyright 2009, Value Team S.p.A.
|
|
* Francesco Rendine, <francesco.rendine@valueteam.com>
|
|
*
|
|
* (C) Copyright 2009 Freescale Semiconductor, Inc.
|
|
*
|
|
* (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
|
|
*
|
|
* Author: Tor Krill tor@excito.com
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <pci.h>
|
|
#include <usb.h>
|
|
#include <asm/io.h>
|
|
#include <usb/ehci-fsl.h>
|
|
|
|
#include "ehci.h"
|
|
#include "ehci-core.h"
|
|
|
|
static void fsl_setup_phy(volatile struct ehci_hcor *);
|
|
static void fsl_platform_set_host_mode(volatile struct usb_ehci *ehci);
|
|
static int reset_usb_controller(volatile struct usb_ehci *ehci);
|
|
static void usb_platform_dr_init(volatile struct usb_ehci *ehci);
|
|
|
|
/*
|
|
* Initialize SOC FSL EHCI Controller
|
|
*
|
|
* This code is derived from EHCI FSL USB Linux driver for MPC5121
|
|
*
|
|
*/
|
|
int ehci_hcd_init(void)
|
|
{
|
|
volatile struct usb_ehci *ehci;
|
|
|
|
/* Hook the memory mapped registers for EHCI-Controller */
|
|
ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB_ADDR;
|
|
hccr = (struct ehci_hccr *)((uint32_t)&(ehci->caplength));
|
|
hcor = (struct ehci_hcor *)((uint32_t) hccr +
|
|
HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
|
|
|
|
/* configure interface for UTMI_WIDE */
|
|
usb_platform_dr_init(ehci);
|
|
|
|
/* Init Phy USB0 to UTMI+ */
|
|
fsl_setup_phy(hcor);
|
|
|
|
/* Set to host mode */
|
|
fsl_platform_set_host_mode(ehci);
|
|
|
|
/*
|
|
* Setting the burst size seems to be required to prevent the
|
|
* USB from hanging when communicating with certain USB Mass
|
|
* storage devices. This was determined by analysing the
|
|
* EHCI registers under Linux vs U-Boot and burstsize was the
|
|
* major non-interrupt related difference between the two
|
|
* implementations.
|
|
*
|
|
* Some USB sticks behave better than others. In particular,
|
|
* the following USB stick is especially problematic:
|
|
* 0930:6545 Toshiba Corp
|
|
*
|
|
* The burstsize is set here to match the Linux implementation.
|
|
*/
|
|
out_be32(&ehci->burstsize, FSL_EHCI_TXPBURST(8) |
|
|
FSL_EHCI_RXPBURST(8));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Destroy the appropriate control structures corresponding
|
|
* the the EHCI host controller.
|
|
*/
|
|
int ehci_hcd_stop(void)
|
|
{
|
|
volatile struct usb_ehci *ehci;
|
|
int exit_status = 0;
|
|
|
|
if (hcor) {
|
|
/* Unhook struct */
|
|
hccr = NULL;
|
|
hcor = NULL;
|
|
|
|
/* Reset the USB controller */
|
|
ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB_ADDR;
|
|
exit_status = reset_usb_controller(ehci);
|
|
}
|
|
|
|
return exit_status;
|
|
}
|
|
|
|
static int reset_usb_controller(volatile struct usb_ehci *ehci)
|
|
{
|
|
unsigned int i;
|
|
|
|
/* Command a reset of the USB Controller */
|
|
out_be32(&(ehci->usbcmd), EHCI_FSL_USBCMD_RST);
|
|
|
|
/* Wait for the reset process to finish */
|
|
for (i = 65535 ; i > 0 ; i--) {
|
|
/*
|
|
* The host will set this bit to zero once the
|
|
* reset process is complete
|
|
*/
|
|
if ((in_be32(&(ehci->usbcmd)) & EHCI_FSL_USBCMD_RST) == 0)
|
|
return 0;
|
|
}
|
|
|
|
/* Hub did not reset in time */
|
|
return -1;
|
|
}
|
|
|
|
static void fsl_setup_phy(volatile struct ehci_hcor *hcor)
|
|
{
|
|
uint32_t portsc;
|
|
|
|
portsc = ehci_readl(&hcor->or_portsc[0]);
|
|
portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW);
|
|
|
|
/* Enable the phy mode to UTMI Wide */
|
|
portsc |= PORT_PTS_PTW;
|
|
portsc |= PORT_PTS_UTMI;
|
|
|
|
ehci_writel(&hcor->or_portsc[0], portsc);
|
|
}
|
|
|
|
static void fsl_platform_set_host_mode(volatile struct usb_ehci *ehci)
|
|
{
|
|
uint32_t temp;
|
|
|
|
temp = in_le32(&ehci->usbmode);
|
|
temp |= CM_HOST | ES_BE;
|
|
out_le32(&ehci->usbmode, temp);
|
|
}
|
|
|
|
static void usb_platform_dr_init(volatile struct usb_ehci *ehci)
|
|
{
|
|
/* Configure interface for UTMI_WIDE */
|
|
out_be32(&ehci->isiphyctrl, PHYCTRL_PHYE | PHYCTRL_PXE);
|
|
out_be32(&ehci->usbgenctrl, GC_PPP | GC_PFP );
|
|
}
|