usb: atmel_usba_udc: Add at91sam9g45 and at91sam9x5 errata handling

at91sam9g45 and at91sam9x5 SoCs have an hardware bug forcing us to
generate a pulse on the BIAS signal on "USB end of reset” and
“USB end of resume" events.

Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Reported-by: Patrice VILCHEZ <patrice.vilchez@atmel.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.h b/drivers/usb/gadget/udc/atmel_usba_udc.h
index 456899e9ee62..72b3537f56ce 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.h
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.h
@@ -306,6 +306,7 @@ struct usba_request {
 
 struct usba_udc_errata {
         void (*toggle_bias)(struct usba_udc *udc, int is_on);
+        void (*pulse_bias)(struct usba_udc *udc);
 };
 
 struct usba_udc {
@@ -326,6 +327,7 @@ struct usba_udc {
         struct clk *pclk;
         struct clk *hclk;
         struct usba_ep *usba_ep;
+        bool bias_pulse_needed;
 
         u16 devstatus;