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[U-Boot,v2,2/2] udc: dfu: s3c_udc: Provide function to check if USB reset was asserted

Message ID 1408957649-13516-2-git-send-email-l.majewski@samsung.com
State Accepted
Delegated to: Marek Vasut
Headers show

Commit Message

Łukasz Majewski Aug. 25, 2014, 9:07 a.m. UTC 
New dfu_usb_get_reset() method is necessary to distinct two different
use cases of dfu-util program.
This method checks if the USB bus reset has been really performed after
DFU DETACH.

Without this function the previous DFU behavior is preserved.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
---
Changes for v2:
- None

---
 drivers/usb/gadget/s3c_udc_otg.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/drivers/usb/gadget/s3c_udc_otg.c b/drivers/usb/gadget/s3c_udc_otg.c
index 63d4487..ce2494c 100644
--- a/drivers/usb/gadget/s3c_udc_otg.c
+++ b/drivers/usb/gadget/s3c_udc_otg.c
@@ -149,6 +149,11 @@  struct s3c_usbotg_reg *reg;
 struct s3c_usbotg_phy *phy;
 static unsigned int usb_phy_ctrl;
 
+bool dfu_usb_get_reset(void)
+{
+	return !!(readl(&reg->gintsts) & INT_RESET);
+}
+
 void otg_phy_init(struct s3c_udc *dev)
 {
 	dev->pdata->phy_control(1);