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From: Michael Grzeschik <m.grzeschik@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH] usb: dwc2: fix multiplier handling in endpoint setup
Date: Tue, 10 Jan 2023 16:17:38 +0100	[thread overview]
Message-ID: <20230110151738.4019078-1-m.grzeschik@pengutronix.de> (raw)

If the multiplier is 0 in the descriptor bitfield the multiplier count
is one. For calculating the multiplier count the extra function
usb_endpoint_maxp_mult should be used. Rework the dwc2 driver to use it
and make multi packages work.

While at it, we also remove the USB_EP_MAXP_MULT and
USB_ENDPOINT_MAXP_MASK macros that would stay left unused and are
defined in include/usb/ch9.ch anyway.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
---
 drivers/usb/dwc2/gadget.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 7070485410..5a72ba795b 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -14,13 +14,6 @@
 #define spin_lock_irqsave(lock, flags) (void)(flags)
 #define spin_unlock_irqrestore(lock, flags) (void)(flags)
 
-#ifndef USB_ENDPOINT_MAXP_MASK
-#define USB_ENDPOINT_MAXP_MASK	0x07ff
-#endif
-#ifndef USB_EP_MAXP_MULT
-#define USB_EP_MAXP_MULT(m)	(((m) & 0x1800) >> 11)
-#endif
-
 static void kill_all_requests(struct dwc2 *, struct dwc2_ep *, int);
 
 static inline struct dwc2_ep *index_to_ep(struct dwc2 *dwc2,
@@ -484,7 +477,7 @@ static int dwc2_ep_enable(struct usb_ep *ep,
 
 	ep_type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
 	mps = usb_endpoint_maxp(desc) & USB_ENDPOINT_MAXP_MASK;
-	mc =  USB_EP_MAXP_MULT(usb_endpoint_maxp(desc));
+	mc = usb_endpoint_maxp_mult(desc);
 
 	/* note, we handle this here instead of dwc2_set_ep_maxpacket */
 	epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index);
-- 
2.30.2




             reply	other threads:[~2023-01-10 15:19 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-10 15:17 Michael Grzeschik [this message]
2023-01-10 15:23 ` Ahmad Fatoum
2023-01-10 15:34   ` Michael Grzeschik
2023-01-10 15:51 ` Jules Maselbas
2023-01-10 17:33 ` Ahmad Fatoum
2023-01-24 20:04   ` Michael Grzeschik

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