diff options
| author | Wolfgang Denk <wd@denx.de> | 2009-04-04 22:15:46 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2009-04-04 22:15:46 +0200 |
| commit | 5f58f8d20f97deaf4dde7eb3886efa3e5a3715ee (patch) | |
| tree | 0e748004387ad33d791977718a100f090b59a5c6 /drivers/usb | |
| parent | 66932ac3929c7a145a6ef6574a96fd7535154951 (diff) | |
| parent | 03bab0091948196b9558248684c04f60943ca4b5 (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot-at91
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/atmel_usb.c | 80 |
2 files changed, 81 insertions, 0 deletions
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 7ddb72a0e1..5523cbdd67 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -31,6 +31,7 @@ COBJS-$(CONFIG_USB_OHCI_NEW) += usb_ohci.o COBJS-$(CONFIG_USB_EHCI) += usb_ehci_core.o # host +COBJS-$(CONFIG_USB_ATMEL) += atmel_usb.o COBJS-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o COBJS-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o COBJS-$(CONFIG_USB_S3C64XX) += s3c64xx_usb.o diff --git a/drivers/usb/atmel_usb.c b/drivers/usb/atmel_usb.c new file mode 100644 index 0000000000..7c44ad0e95 --- /dev/null +++ b/drivers/usb/atmel_usb.c @@ -0,0 +1,80 @@ +/* + * (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> + +int usb_cpu_init(void) +{ + +#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ + defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) + /* Enable PLLB */ + at91_sys_write(AT91_CKGR_PLLBR, CONFIG_SYS_AT91_PLLB); + while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB) + ; +#endif + + /* Enable USB host clock. */ + at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_UHP); +#ifdef CONFIG_AT91SAM9261 + at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP | AT91_PMC_HCK0); +#else + at91_sys_write(AT91_PMC_SCER, AT91_PMC_UHP); +#endif + + return 0; +} + +int usb_cpu_stop(void) +{ + /* Disable USB host clock. */ + at91_sys_write(AT91_PMC_PCDR, 1 << AT91_ID_UHP); +#ifdef CONFIG_AT91SAM9261 + at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP | AT91_PMC_HCK0); +#else + at91_sys_write(AT91_PMC_SCDR, AT91_PMC_UHP); +#endif + +#if defined(CONFIG_AT91CAP9) || defined(CONFIG_AT91SAM9260) || \ + defined(CONFIG_AT91SAM9263) || defined(CONFIG_AT91SAM9G20) + /* Disable PLLB */ + at91_sys_write(AT91_CKGR_PLLBR, 0); + while ((at91_sys_read(AT91_PMC_SR) & AT91_PMC_LOCKB) != 0) + ; +#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) */ |