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authorTroy Kisky <troy.kisky@boundarydevices.com>2013-10-10 15:28:00 -0700
committerMarek Vasut <marex@denx.de>2013-10-20 23:46:33 +0200
commit3b59abf583143a9ed11ea0d05fdad02afb996d45 (patch)
tree0c6feffe65023273d1d3db35963aad04abb4422b /drivers
parentd1a5286099a1ccb43fa8599e2c806ca039783e2f (diff)
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usb: gadget: mv_udc: fix full speed connections
Set maximum packet length in queue header to wMaxPacketSize of endpoint. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/gadget/mv_udc.c48
1 files changed, 34 insertions, 14 deletions
diff --git a/drivers/usb/gadget/mv_udc.c b/drivers/usb/gadget/mv_udc.c
index e330bbd..24c3e4f 100644
--- a/drivers/usb/gadget/mv_udc.c
+++ b/drivers/usb/gadget/mv_udc.c
@@ -14,6 +14,7 @@
#include <net.h>
#include <malloc.h>
#include <asm/io.h>
+#include <asm/unaligned.h>
#include <linux/types.h>
#include <usb/mv_udc.h>
@@ -207,7 +208,7 @@ static void mv_ep_free_request(struct usb_ep *ep, struct usb_request *_req)
return;
}
-static void ep_enable(int num, int in)
+static void ep_enable(int num, int in, int maxpacket)
{
struct ept_queue_head *head;
struct mv_udc *udc = (struct mv_udc *)controller.ctrl->hcor;
@@ -221,7 +222,7 @@ static void ep_enable(int num, int in)
n |= (CTRL_RXE | CTRL_RXR | CTRL_RXT_BULK);
if (num != 0) {
- head->config = CONFIG_MAX_PKT(EP_MAX_PACKET_SIZE) | CONFIG_ZLT;
+ head->config = CONFIG_MAX_PKT(maxpacket) | CONFIG_ZLT;
mv_flush_qh(num);
}
writel(n, &udc->epctrl[num]);
@@ -234,8 +235,21 @@ static int mv_ep_enable(struct usb_ep *ep,
int num, in;
num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
in = (desc->bEndpointAddress & USB_DIR_IN) != 0;
- ep_enable(num, in);
mv_ep->desc = desc;
+
+ if (num) {
+ int max = get_unaligned_le16(&desc->wMaxPacketSize);
+
+ if ((max > 64) && (controller.gadget.speed == USB_SPEED_FULL))
+ max = 64;
+ if (ep->maxpacket != max) {
+ DBG("%s: from %d to %d\n", __func__,
+ ep->maxpacket, max);
+ ep->maxpacket = max;
+ }
+ }
+ ep_enable(num, in, ep->maxpacket);
+ DBG("%s: num=%d maxpacket=%d\n", __func__, num, ep->maxpacket);
return 0;
}
@@ -410,14 +424,16 @@ static void handle_setup(void)
if ((r.wValue == 0) && (r.wLength == 0)) {
req->length = 0;
for (i = 0; i < NUM_ENDPOINTS; i++) {
- if (!controller.ep[i].desc)
+ struct mv_ep *ep = &controller.ep[i];
+
+ if (!ep->desc)
continue;
- num = controller.ep[i].desc->bEndpointAddress
+ num = ep->desc->bEndpointAddress
& USB_ENDPOINT_NUMBER_MASK;
- in = (controller.ep[i].desc->bEndpointAddress
+ in = (ep->desc->bEndpointAddress
& USB_DIR_IN) != 0;
if ((num == _num) && (in == _in)) {
- ep_enable(num, in);
+ ep_enable(num, in, ep->ep.maxpacket);
usb_ep_queue(controller.gadget.ep0,
req, 0);
break;
@@ -501,15 +517,19 @@ void udc_irq(void)
DBG("-- suspend --\n");
if (n & STS_PCI) {
- DBG("-- portchange --\n");
+ int max = 64;
+ int speed = USB_SPEED_FULL;
+
bit = (readl(&udc->portsc) >> 26) & 3;
+ DBG("-- portchange %x %s\n", bit, (bit == 2) ? "High" : "Full");
if (bit == 2) {
- controller.gadget.speed = USB_SPEED_HIGH;
- for (i = 1; i < NUM_ENDPOINTS && n; i++)
- if (controller.ep[i].desc)
- controller.ep[i].ep.maxpacket = 512;
- } else {
- controller.gadget.speed = USB_SPEED_FULL;
+ speed = USB_SPEED_HIGH;
+ max = 512;
+ }
+ controller.gadget.speed = speed;
+ for (i = 1; i < NUM_ENDPOINTS; i++) {
+ if (controller.ep[i].ep.maxpacket > max)
+ controller.ep[i].ep.maxpacket = max;
}
}