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usb: f_gsi: Increase GPS EP maxpacket size to 64bytes

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Currently usb driver is using 8 bytes request on interrupt endpoint
for all CDC functions. GPS host driver is expecting short packet/zero
length packet on interrupt endpoint and failing the transfer with 8 bytes
maxpacket. Increase the maxpacket size to 64 bytes so that host ends
the transfer with a short packet.

Change-Id: Icc9919fbd633468d3cc7d4d8ab1945730cdc7c06
Signed-off-by: Chandana Kishori Chiluveru <cchiluve@codeaurora.org>
This commit is contained in:
Chandana Kishori Chiluveru 2018-04-27 18:00:09 +05:30 • committed by Gerrit - the friendly Code Review server
commit 87f4d33019
1 changed files with 5 additions and 4 deletions
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9
drivers/usb/gadget/function/f_gsi.h
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@ -342,6 +342,7 @@ error:
#define LOG2_STATUS_INTERVAL_MSEC 5
#define MAX_NOTIFY_SIZE sizeof(struct usb_cdc_notification)
#define GPS_MAX_NOTIFY_SIZE 64
/* rmnet device descriptors */
@ -1450,7 +1451,7 @@ static struct usb_endpoint_descriptor gps_fs_notify_desc = {
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = cpu_to_le16(MAX_NOTIFY_SIZE),
.wMaxPacketSize = cpu_to_le16(GPS_MAX_NOTIFY_SIZE),
.bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC,
};
@ -1466,7 +1467,7 @@ static struct usb_endpoint_descriptor gps_hs_notify_desc = {
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = cpu_to_le16(MAX_NOTIFY_SIZE),
.wMaxPacketSize = cpu_to_le16(GPS_MAX_NOTIFY_SIZE),
.bInterval = LOG2_STATUS_INTERVAL_MSEC + 4,
};
@ -1482,7 +1483,7 @@ static struct usb_endpoint_descriptor gps_ss_notify_desc = {
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = cpu_to_le16(MAX_NOTIFY_SIZE),
.wMaxPacketSize = cpu_to_le16(GPS_MAX_NOTIFY_SIZE),
.bInterval = LOG2_STATUS_INTERVAL_MSEC + 4,
};
@ -1493,7 +1494,7 @@ static struct usb_ss_ep_comp_descriptor gps_ss_notify_comp_desc = {
/* the following 3 values can be tweaked if necessary */
/* .bMaxBurst = 0, */
/* .bmAttributes = 0, */
.wBytesPerInterval = cpu_to_le16(MAX_NOTIFY_SIZE),
.wBytesPerInterval = cpu_to_le16(GPS_MAX_NOTIFY_SIZE),
};
static struct usb_descriptor_header *gps_ss_function[] = {