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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2012-01-28 22:35:36 +0800
committerJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2012-03-16 00:41:00 +0800
commitd1494a340807c9b77aa44bc8d8166353df4cf1c3 (patch)
tree213f831c9e3a47acb3095bef39eaf435630bebec /drivers/usb/gadget/at91_udc.c
parent62c5553ab7ecf23e7b5464a59d728ab94479adbb (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/gadget/at91_udc.c')
-rw-r--r--drivers/usb/gadget/at91_udc.c40
1 files changed, 38 insertions, 2 deletions
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),
},
};