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usb: gadget: f_midi: add super speed support 

Add super speed descriptors for f_midi.

Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Badhri Jagan Sridharan 2017-08-14 18:15:14 -07:00 committed by Felipe Balbi
parent a79741fdb0
commit 24cf34595d
1 changed files with 39 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/usb/gadget/function/f_midi.c
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@ -163,6 +163,13 @@ static struct usb_endpoint_descriptor bulk_out_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
static struct usb_ss_ep_comp_descriptor bulk_out_ss_comp_desc = {
.bLength = sizeof(bulk_out_ss_comp_desc),
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
/* .bMaxBurst = 0, */
/* .bmAttributes = 0, */
};
/* B.5.2 Class-specific MS Bulk OUT Endpoint Descriptor */
static struct usb_ms_endpoint_descriptor_16 ms_out_desc = {
/* .bLength = DYNAMIC */
@ -180,6 +187,13 @@ static struct usb_endpoint_descriptor bulk_in_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
static struct usb_ss_ep_comp_descriptor bulk_in_ss_comp_desc = {
.bLength = sizeof(bulk_in_ss_comp_desc),
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
/* .bMaxBurst = 0, */
/* .bmAttributes = 0, */
};
/* B.6.2 Class-specific MS Bulk IN Endpoint Descriptor */
static struct usb_ms_endpoint_descriptor_16 ms_in_desc = {
/* .bLength = DYNAMIC */
@ -853,7 +867,7 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
struct usb_composite_dev *cdev = c->cdev;
struct f_midi *midi = func_to_midi(f);
struct usb_string *us;
int status, n, jack = 1, i = 0;
int status, n, jack = 1, i = 0, endpoint_descriptor_index = 0;
midi->gadget = cdev->gadget;
tasklet_init(&midi->tasklet, f_midi_in_tasklet, (unsigned long) midi);
@ -895,7 +909,7 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
goto fail;
/* allocate temporary function list */
midi_function = kcalloc((MAX_PORTS * 4) + 9, sizeof(*midi_function),
midi_function = kcalloc((MAX_PORTS * 4) + 11, sizeof(*midi_function),
GFP_KERNEL);
if (!midi_function) {
status = -ENOMEM;
@ -985,6 +999,7 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
ms_in_desc.bNumEmbMIDIJack = midi->out_ports;
/* ... and add them to the list */
endpoint_descriptor_index = i;
midi_function[i++] = (struct usb_descriptor_header *) &bulk_out_desc;
midi_function[i++] = (struct usb_descriptor_header *) &ms_out_desc;
midi_function[i++] = (struct usb_descriptor_header *) &bulk_in_desc;
@ -1009,13 +1024,34 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
goto fail_f_midi;
}
if (gadget_is_superspeed(c->cdev->gadget)) {
bulk_in_desc.wMaxPacketSize = cpu_to_le16(1024);
bulk_out_desc.wMaxPacketSize = cpu_to_le16(1024);
i = endpoint_descriptor_index;
midi_function[i++] = (struct usb_descriptor_header *)
&bulk_out_desc;
midi_function[i++] = (struct usb_descriptor_header *)
&bulk_out_ss_comp_desc;
midi_function[i++] = (struct usb_descriptor_header *)
&ms_out_desc;
midi_function[i++] = (struct usb_descriptor_header *)
&bulk_in_desc;
midi_function[i++] = (struct usb_descriptor_header *)
&bulk_in_ss_comp_desc;
midi_function[i++] = (struct usb_descriptor_header *)
&ms_in_desc;
f->ss_descriptors = usb_copy_descriptors(midi_function);
if (!f->ss_descriptors)
goto fail_f_midi;
}
kfree(midi_function);
return 0;
fail_f_midi:
kfree(midi_function);
usb_free_descriptors(f->hs_descriptors);
usb_free_all_descriptors(f);
fail:
f_midi_unregister_card(midi);
fail_register: