diff options
| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-01-28 22:35:36 +0800 |
|---|---|---|
| committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-03-16 00:41:00 +0800 |
| commit | d1494a340807c9b77aa44bc8d8166353df4cf1c3 (patch) | |
| tree | 213f831c9e3a47acb3095bef39eaf435630bebec /drivers/usb | |
| parent | 62c5553ab7ecf23e7b5464a59d728ab94479adbb (diff) | |
USB: at91: Device udc add dt support
Allow to compile it if AT91 is enable.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/usb/gadget/at91_udc.c | 40 |
2 files changed, 39 insertions, 3 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 85ae4b46bb6..edf11441213 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -137,7 +137,7 @@ choice config USB_AT91 tristate "Atmel AT91 USB Device Port" - depends on ARCH_AT91 && !ARCH_AT91SAM9RL && !ARCH_AT91SAM9G45 + depends on ARCH_AT91 help Many Atmel AT91 processors (such as the AT91RM2000) have a full speed USB Device Port with support for five configurable diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index f99b3dc745b..4063209fe8d 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -30,6 +30,8 @@ #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/prefetch.h> +#include <linux/of.h> +#include <linux/of_gpio.h> #include <asm/byteorder.h> #include <mach/hardware.h> @@ -1707,7 +1709,27 @@ static void at91udc_shutdown(struct platform_device *dev) spin_unlock_irqrestore(&udc->lock, flags); } -static int __init at91udc_probe(struct platform_device *pdev) +static void __devinit at91udc_of_init(struct at91_udc *udc, + struct device_node *np) +{ + struct at91_udc_data *board = &udc->board; + u32 val; + enum of_gpio_flags flags; + + if (of_property_read_u32(np, "atmel,vbus-polled", &val) == 0) + board->vbus_polled = 1; + + board->vbus_pin = of_get_named_gpio_flags(np, "atmel,vbus-gpio", 0, + &flags); + board->vbus_active_low = (flags & OF_GPIO_ACTIVE_LOW) ? 1 : 0; + + board->pullup_pin = of_get_named_gpio_flags(np, "atmel,pullup-gpio", 0, + &flags); + + board->pullup_active_low = (flags & OF_GPIO_ACTIVE_LOW) ? 1 : 0; +} + +static int __devinit at91udc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct at91_udc *udc; @@ -1742,7 +1764,11 @@ static int __init at91udc_probe(struct platform_device *pdev) /* init software state */ udc = &controller; udc->gadget.dev.parent = dev; - udc->board = *(struct at91_udc_data *) dev->platform_data; + if (pdev->dev.of_node) + at91udc_of_init(udc, pdev->dev.of_node); + else + memcpy(&udc->board, dev->platform_data, + sizeof(struct at91_udc_data)); udc->pdev = pdev; udc->enabled = 0; spin_lock_init(&udc->lock); @@ -1971,6 +1997,15 @@ static int at91udc_resume(struct platform_device *pdev) #define at91udc_resume NULL #endif +#if defined(CONFIG_OF) +static const struct of_device_id at91_udc_dt_ids[] = { + { .compatible = "atmel,at91rm9200-udc" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, at91_udc_dt_ids); +#endif + static struct platform_driver at91_udc_driver = { .remove = __exit_p(at91udc_remove), .shutdown = at91udc_shutdown, @@ -1979,6 +2014,7 @@ static struct platform_driver at91_udc_driver = { .driver = { .name = (char *) driver_name, .owner = THIS_MODULE, + .of_match_table = of_match_ptr(at91_udc_dt_ids), }, }; |