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>master
Damien Dusha
14 years ago
committed by
Wolfgang Denk
parent
6f119c558b
commit
29c6fbe047
@ -0,0 +1,159 @@ |
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/*
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* (C) Copyright 2010, Damien Dusha, <d.dusha@gmail.com> |
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* |
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* (C) Copyright 2009, Value Team S.p.A. |
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* Francesco Rendine, <francesco.rendine@valueteam.com> |
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* |
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* (C) Copyright 2009 Freescale Semiconductor, Inc. |
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* |
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* (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB |
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* |
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* Author: Tor Krill tor@excito.com |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include <common.h> |
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#include <pci.h> |
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#include <usb.h> |
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#include <asm/io.h> |
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#include <usb/ehci-fsl.h> |
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#include "ehci.h" |
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#include "ehci-core.h" |
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static void fsl_setup_phy(volatile struct ehci_hcor *); |
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static void fsl_platform_set_host_mode(volatile struct usb_ehci *ehci); |
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static int reset_usb_controller(volatile struct usb_ehci *ehci); |
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static void usb_platform_dr_init(volatile struct usb_ehci *ehci); |
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/*
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* Initialize SOC FSL EHCI Controller |
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* |
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* This code is derived from EHCI FSL USB Linux driver for MPC5121 |
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* |
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*/ |
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int ehci_hcd_init(void) |
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{ |
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volatile struct usb_ehci *ehci; |
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/* Hook the memory mapped registers for EHCI-Controller */ |
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ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB_ADDR; |
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hccr = (struct ehci_hccr *)((uint32_t)&(ehci->caplength)); |
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hcor = (struct ehci_hcor *)((uint32_t) hccr + |
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HC_LENGTH(ehci_readl(&hccr->cr_capbase))); |
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/* configure interface for UTMI_WIDE */ |
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usb_platform_dr_init(ehci); |
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/* Init Phy USB0 to UTMI+ */ |
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fsl_setup_phy(hcor); |
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/* Set to host mode */ |
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fsl_platform_set_host_mode(ehci); |
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/*
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* Setting the burst size seems to be required to prevent the |
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* USB from hanging when communicating with certain USB Mass |
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* storage devices. This was determined by analysing the |
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* EHCI registers under Linux vs U-Boot and burstsize was the |
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* major non-interrupt related difference between the two |
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* implementations. |
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* |
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* Some USB sticks behave better than others. In particular, |
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* the following USB stick is especially problematic: |
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* 0930:6545 Toshiba Corp |
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* |
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* The burstsize is set here to match the Linux implementation. |
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*/ |
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out_be32(&ehci->burstsize, FSL_EHCI_TXPBURST(8) | |
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FSL_EHCI_RXPBURST(8)); |
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return 0; |
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} |
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/*
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* Destroy the appropriate control structures corresponding |
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* the the EHCI host controller. |
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*/ |
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int ehci_hcd_stop(void) |
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{ |
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volatile struct usb_ehci *ehci; |
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int exit_status = 0; |
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if (hcor) { |
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/* Unhook struct */ |
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hccr = NULL; |
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hcor = NULL; |
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/* Reset the USB controller */ |
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ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB_ADDR; |
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exit_status = reset_usb_controller(ehci); |
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} |
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return exit_status; |
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} |
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static int reset_usb_controller(volatile struct usb_ehci *ehci) |
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{ |
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unsigned int i; |
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/* Command a reset of the USB Controller */ |
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out_be32(&(ehci->usbcmd), EHCI_FSL_USBCMD_RST); |
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/* Wait for the reset process to finish */ |
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for (i = 65535 ; i > 0 ; i--) { |
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/*
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* The host will set this bit to zero once the |
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* reset process is complete |
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*/ |
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if ((in_be32(&(ehci->usbcmd)) & EHCI_FSL_USBCMD_RST) == 0) |
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return 0; |
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} |
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/* Hub did not reset in time */ |
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return -1; |
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} |
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static void fsl_setup_phy(volatile struct ehci_hcor *hcor) |
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{ |
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uint32_t portsc; |
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portsc = ehci_readl(&hcor->or_portsc[0]); |
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portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW); |
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/* Enable the phy mode to UTMI Wide */ |
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portsc |= PORT_PTS_PTW; |
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portsc |= PORT_PTS_UTMI; |
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ehci_writel(&hcor->or_portsc[0], portsc); |
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} |
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static void fsl_platform_set_host_mode(volatile struct usb_ehci *ehci) |
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{ |
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uint32_t temp; |
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temp = in_le32(&ehci->usbmode); |
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temp |= CM_HOST | ES_BE; |
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out_le32(&ehci->usbmode, temp); |
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} |
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static void usb_platform_dr_init(volatile struct usb_ehci *ehci) |
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{ |
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/* Configure interface for UTMI_WIDE */ |
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out_be32(&ehci->isiphyctrl, PHYCTRL_PHYE | PHYCTRL_PXE); |
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out_be32(&ehci->usbgenctrl, GC_PPP | GC_PFP ); |
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} |
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