75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
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* (C) Copyright 2006
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* 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(CONFIG_SYS_USB_OHCI_CPU_INIT)
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# if defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410)
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#if defined(CONFIG_S3C2400)
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# include <s3c2400.h>
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#elif defined(CONFIG_S3C2410)
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# include <s3c2410.h>
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#endif
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#include <asm/io.h>
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int usb_cpu_init(void)
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{
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struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
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struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
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/*
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* Set the 48 MHz UPLL clocking. Values are taken from
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* "PLL value selection guide", 6-23, s3c2400_UM.pdf.
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*/
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writel((40 << 12) + (1 << 4) + 2, &clk_power->UPLLCON);
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/* 1 = use pads related USB for USB host */
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writel(readl(&gpio->MISCCR) | 0x8, &gpio->MISCCR);
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/*
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* Enable USB host clock.
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*/
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writel(readl(&clk_power->CLKCON) | (1 << 4), &clk_power->CLKCON);
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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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struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
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/* may not want to do this */
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writel(readl(&clk_power->CLKCON) & ~(1 << 4), &clk_power->CLKCON);
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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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struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
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writel(readl(&clk_power->CLKCON) & ~(1 << 4), &clk_power->CLKCON);
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return 0;
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}
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# endif /* defined(CONFIG_S3C2400) || defined(CONFIG_S3C2410) */
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#endif /* defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */
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