mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-11 13:46:17 +09:00
85ac988e86
Some USB keys need to be switched off before loading the kernel otherwise they can remain in an undefined status which prevents them to be correctly recognized by the kernel. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Markus Klotzbuecher <mk@denx.de>
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
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* (C) Copyright 2006
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* Markus Klotzbuecher, DENX Software Engineering <mk@denx.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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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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#if defined(CONFIG_USB_OHCI_NEW) && defined(CFG_USB_OHCI_CPU_INIT)
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# if defined(CONFIG_CPU_MONAHANS) || defined(CONFIG_PXA27X)
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#include <asm/arch/pxa-regs.h>
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#include <usb.h>
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int usb_cpu_init(void)
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{
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#if defined(CONFIG_CPU_MONAHANS)
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/* Enable USB host clock. */
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CKENA |= (CKENA_2_USBHOST | CKENA_20_UDC);
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udelay(100);
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#endif
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#if defined(CONFIG_PXA27X)
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/* Enable USB host clock. */
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CKEN |= CKEN10_USBHOST;
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#endif
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#if defined(CONFIG_CPU_MONAHANS)
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/* Configure Port 2 for Host (USB Client Registers) */
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UP2OCR = 0x3000c;
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#endif
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UHCHR |= UHCHR_FHR;
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wait_ms(11);
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UHCHR &= ~UHCHR_FHR;
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UHCHR |= UHCHR_FSBIR;
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while (UHCHR & UHCHR_FSBIR)
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udelay(1);
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#if defined(CONFIG_CPU_MONAHANS)
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UHCHR &= ~UHCHR_SSEP0;
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#endif
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#if defined(CONFIG_PXA27X)
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UHCHR &= ~UHCHR_SSEP2;
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#endif
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UHCHR &= ~UHCHR_SSEP1;
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UHCHR &= ~UHCHR_SSE;
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return 0;
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}
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int usb_cpu_stop(void)
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{
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UHCHR |= UHCHR_FHR;
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udelay(11);
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UHCHR &= ~UHCHR_FHR;
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UHCCOMS |= 1;
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udelay(10);
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#if defined(CONFIG_CPU_MONAHANS)
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UHCHR |= UHCHR_SSEP0;
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#endif
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#if defined(CONFIG_PXA27X)
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UHCHR |= UHCHR_SSEP2;
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#endif
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UHCHR |= UHCHR_SSEP1;
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UHCHR |= UHCHR_SSE;
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return 0;
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}
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int usb_cpu_init_fail(void)
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{
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UHCHR |= UHCHR_FHR;
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udelay(11);
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UHCHR &= ~UHCHR_FHR;
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UHCCOMS |= 1;
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udelay(10);
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#if defined(CONFIG_CPU_MONAHANS)
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UHCHR |= UHCHR_SSEP0;
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#endif
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#if defined(CONFIG_PXA27X)
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UHCHR |= UHCHR_SSEP2;
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#endif
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UHCHR |= UHCHR_SSEP1;
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UHCHR |= UHCHR_SSE;
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return 0;
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}
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# endif /* defined(CONFIG_CPU_MONAHANS) || defined(CONFIG_PXA27X) */
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#endif /* defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) */
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