[people/ms/u-boot.git] / drivers / usb / host / ohci-at91.c

/*
 * (C) Copyright 2006
 * DENX Software Engineering <mk@denx.de>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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>

#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)

#include <asm/arch/hardware.h>
#include <asm/arch/io.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/clk.h>

int usb_cpu_init(void)
{
	at91_pmc_t *pmc	= (at91_pmc_t *)AT91_PMC_BASE;

#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
    defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) || \
    defined(CONFIG_AT91SAM9261)
	/* Enable PLLB */
	writel(get_pllb_init(), &pmc->pllbr);
	while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
		;
#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
	/* Enable UPLL */
	writel(readl(&pmc->uckr) | AT91_PMC_UPLLEN | AT91_PMC_BIASEN,
		&pmc->uckr);
	while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU)
		;

	/* Select PLLA as input clock of OHCI */
	writel(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10, &pmc->usb);
#endif

	/* Enable USB host clock. */
	writel(1 << AT91_ID_UHP, &pmc->pcer);
#ifdef CONFIG_AT91SAM9261
	writel(AT91_PMC_UHP | AT91_PMC_HCK0, &pmc->scer);
#else
	writel(AT91_PMC_UHP, &pmc->scer);
#endif

	return 0;
}

int usb_cpu_stop(void)
{
	at91_pmc_t *pmc	= (at91_pmc_t *)AT91_PMC_BASE;

	/* Disable USB host clock. */
	writel(1 << AT91_ID_UHP, &pmc->pcdr);
#ifdef CONFIG_AT91SAM9261
	writel(AT91_PMC_UHP | AT91_PMC_HCK0, &pmc->scdr);
#else
	writel(AT91_PMC_UHP, &pmc->scdr);
#endif

#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \
    defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20)
	/* Disable PLLB */
	writel(0, &pmc->pllbr);
	while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0)
		;
#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45)
	/* Disable UPLL */
	writel(readl(&pmc->uckr) & (~AT91_PMC_UPLLEN), &pmc->uckr);
	while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU)
		;
#endif

	return 0;
}

int usb_cpu_init_fail(void)
{
	return usb_cpu_stop();
}

#endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */
Commit	Line	Data
fefb6c10 SP	1	/*
fefb6c10 SP	2	* (C) Copyright 2006
567fb852	3	* DENX Software Engineering <mk@denx.de>
fefb6c10 SP	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	#include <common.h>
	25
6d0f6bcf	26	#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
fefb6c10 SP	27
fefb6c10 SP	28	#include <asm/arch/hardware.h>
983c1db0 SP	29	#include <asm/arch/io.h>
983c1db0 SP	30	#include <asm/arch/at91_pmc.h>
dc39ae95	31	#include <asm/arch/clk.h>
fefb6c10 SP	32
	33	int usb_cpu_init(void)
	34	{
0701f730	35	at91_pmc_t pmc = (at91_pmc_t )AT91_PMC_BASE;
3e0cda07 SP	36
3e0cda07 SP	37	#if defined(CONFIG_AT91CAP9) \|\| defined(CONFIG_AT91SAM9260) \|\| \
faa14bab RII	38	defined(CONFIG_AT91SAM9263) \|\| defined(CONFIG_AT91SAM9G20) \|\| \
faa14bab RII	39	defined(CONFIG_AT91SAM9261)
3e0cda07	40	/* Enable PLLB */
0701f730 MF	41	writel(get_pllb_init(), &pmc->pllbr);
0701f730 MF	42	while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB)
3e0cda07	43	;
64203c7b SM	44	#elif defined(CONFIG_AT91SAM9G45) \|\| defined(CONFIG_AT91SAM9M10G45)
	45	/* Enable UPLL */
	46	writel(readl(&pmc->uckr) \| AT91_PMC_UPLLEN \| AT91_PMC_BIASEN,
	47	&pmc->uckr);
	48	while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU)
	49	;
	50
	51	/* Select PLLA as input clock of OHCI */
	52	writel(AT91_PMC_USBS_USB_UPLL \| AT91_PMC_USBDIV_10, &pmc->usb);
3e0cda07 SP	53	#endif
3e0cda07 SP	54
fefb6c10	55	/* Enable USB host clock. */
0701f730	56	writel(1 << AT91_ID_UHP, &pmc->pcer);
d99a8ff6	57	#ifdef CONFIG_AT91SAM9261
0701f730	58	writel(AT91_PMC_UHP \| AT91_PMC_HCK0, &pmc->scer);
d99a8ff6	59	#else
0701f730	60	writel(AT91_PMC_UHP, &pmc->scer);
d99a8ff6	61	#endif
fefb6c10 SP	62
	63	return 0;
	64	}
	65
	66	int usb_cpu_stop(void)
	67	{
0701f730 MF	68	at91_pmc_t pmc = (at91_pmc_t )AT91_PMC_BASE;
0701f730 MF	69
fefb6c10	70	/* Disable USB host clock. */
0701f730	71	writel(1 << AT91_ID_UHP, &pmc->pcdr);
d99a8ff6	72	#ifdef CONFIG_AT91SAM9261
0701f730	73	writel(AT91_PMC_UHP \| AT91_PMC_HCK0, &pmc->scdr);
d99a8ff6	74	#else
0701f730	75	writel(AT91_PMC_UHP, &pmc->scdr);
d99a8ff6	76	#endif
3e0cda07 SP	77
3e0cda07 SP	78	#if defined(CONFIG_AT91CAP9) \|\| defined(CONFIG_AT91SAM9260) \|\| \
df486b1f	79	defined(CONFIG_AT91SAM9263) \|\| defined(CONFIG_AT91SAM9G20)
3e0cda07	80	/* Disable PLLB */
0701f730 MF	81	writel(0, &pmc->pllbr);
0701f730 MF	82	while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0)
3e0cda07	83	;
64203c7b SM	84	#elif defined(CONFIG_AT91SAM9G45) \|\| defined(CONFIG_AT91SAM9M10G45)
	85	/* Disable UPLL */
	86	writel(readl(&pmc->uckr) & (~AT91_PMC_UPLLEN), &pmc->uckr);
	87	while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU)
	88	;
3e0cda07 SP	89	#endif
3e0cda07 SP	90
fefb6c10 SP	91	return 0;
	92	}
	93
	94	int usb_cpu_init_fail(void)
	95	{
	96	return usb_cpu_stop();
	97	}
	98
6d0f6bcf	99	#endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */