diff options
Diffstat (limited to 'board/ti/panda/ehci-panda.c')
| -rw-r--r-- | board/ti/panda/ehci-panda.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/board/ti/panda/ehci-panda.c b/board/ti/panda/ehci-panda.c new file mode 100644 index 000000000..b1e247c19 --- /dev/null +++ b/board/ti/panda/ehci-panda.c @@ -0,0 +1,59 @@ +/* + * OMAP4 EHCI port, copied from linux/drivers/usb/host/ehci-omap.c + * + * Copyright (C) 2007-2010 Texas Instruments, Inc. + * Author: Vikram Pandita <vikram.pandita@ti.com> + * Author: Anand Gadiyar <gadiyar@ti.com> + */ + +#include <asm/arch/gpio.h> +#include <asm/arch/ehci.h> + +#define GPIO_HUB_POWER 1 +#define GPIO_HUB_NRESET 62 + +int ehci_hcd_init(void) +{ + unsigned long base = get_timer(0); + unsigned reg = 0, port = 0; + int rc; + + /* disable the power to the usb hub prior to init */ + rc = omap_request_gpio(GPIO_HUB_POWER); + if (rc < 0) { + printf("Could not request gpio %d\n", GPIO_HUB_POWER); + return rc; + } + + rc = omap_request_gpio(GPIO_HUB_NRESET); + if (rc < 0) { + printf("Could not request gpio %d\n", GPIO_HUB_NRESET); + omap_free_gpio(GPIO_HUB_POWER); + return rc; + } + + omap_set_gpio_direction(GPIO_HUB_POWER, 0); + omap_set_gpio_dataout(GPIO_HUB_POWER, 0); + omap_set_gpio_direction(GPIO_HUB_NRESET, 0); + omap_set_gpio_dataout(GPIO_HUB_NRESET, 0); + omap_set_gpio_dataout(GPIO_HUB_NRESET, 1); + + rc = omap4_ehci_hcd_init(); + + if (rc < 0) + return rc; + + omap_set_gpio_dataout(GPIO_HUB_POWER, 1); + + return 0; +} + +int ehci_hcd_stop(void) +{ + omap4_ehci_hcd_stop(); + + omap_set_gpio_dataout(GPIO_HUB_POWER, 0); + omap_set_gpio_dataout(GPIO_HUB_NRESET, 0); + omap_free_gpio(GPIO_HUB_POWER); + omap_free_gpio(GPIO_HUB_NRESET); +} |