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Date: Wed, 03 Feb 2016 13:39:40 +0100
From: Robert Baldyga <r.baldyga@...sung.com>
To: balbi@...com
Cc: gregkh@...uxfoundation.org, andrzej.p@...sung.com,
m.szyprowski@...sung.com, b.zolnierkie@...sung.com,
linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
Robert Baldyga <r.baldyga@...sung.com>
Subject: [PATCH v4 32/43] usb: gadget: f_obex: conversion to new API
Generate descriptors in new format and attach them to USB function in
prep_descs(). Implement prep_vendor_descs() to supply class specific
descriptors. Change set_alt() implementation and implement clear_alt()
operation. Remove boilerplate code.
Signed-off-by: Robert Baldyga <r.baldyga@...sung.com>
---
drivers/usb/gadget/function/f_obex.c | 188 ++++++++++-------------------------
1 file changed, 50 insertions(+), 138 deletions(-)
diff --git a/drivers/usb/gadget/function/f_obex.c b/drivers/usb/gadget/function/f_obex.c
index d6396e0..0c4b1fd 100644
--- a/drivers/usb/gadget/function/f_obex.c
+++ b/drivers/usb/gadget/function/f_obex.c
@@ -34,7 +34,6 @@ struct f_obex {
struct gserial port;
u8 ctrl_id;
u8 data_id;
- u8 cur_alt;
u8 port_num;
};
@@ -144,19 +143,6 @@ static struct usb_endpoint_descriptor obex_hs_ep_in_desc = {
.wMaxPacketSize = cpu_to_le16(512),
};
-static struct usb_descriptor_header *hs_function[] = {
- (struct usb_descriptor_header *) &obex_control_intf,
- (struct usb_descriptor_header *) &obex_cdc_header_desc,
- (struct usb_descriptor_header *) &obex_desc,
- (struct usb_descriptor_header *) &obex_cdc_union_desc,
-
- (struct usb_descriptor_header *) &obex_data_nop_intf,
- (struct usb_descriptor_header *) &obex_data_intf,
- (struct usb_descriptor_header *) &obex_hs_ep_in_desc,
- (struct usb_descriptor_header *) &obex_hs_ep_out_desc,
- NULL,
-};
-
/* Full-Speed Support */
static struct usb_endpoint_descriptor obex_fs_ep_in_desc = {
@@ -175,18 +161,19 @@ static struct usb_endpoint_descriptor obex_fs_ep_out_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
};
-static struct usb_descriptor_header *fs_function[] = {
- (struct usb_descriptor_header *) &obex_control_intf,
- (struct usb_descriptor_header *) &obex_cdc_header_desc,
- (struct usb_descriptor_header *) &obex_desc,
- (struct usb_descriptor_header *) &obex_cdc_union_desc,
+USB_COMPOSITE_ENDPOINT(ep_in, &obex_fs_ep_in_desc,
+ &obex_hs_ep_in_desc, NULL, NULL);
+USB_COMPOSITE_ENDPOINT(ep_out, &obex_fs_ep_out_desc,
+ &obex_hs_ep_out_desc, NULL, NULL);
- (struct usb_descriptor_header *) &obex_data_nop_intf,
- (struct usb_descriptor_header *) &obex_data_intf,
- (struct usb_descriptor_header *) &obex_fs_ep_in_desc,
- (struct usb_descriptor_header *) &obex_fs_ep_out_desc,
- NULL,
-};
+USB_COMPOSITE_ALTSETTING(intf0alt0, &obex_control_intf);
+USB_COMPOSITE_ALTSETTING(intf1alt0, &obex_data_nop_intf);
+USB_COMPOSITE_ALTSETTING(intf1alt1, &obex_data_intf, &ep_in, &ep_out);
+
+USB_COMPOSITE_INTERFACE(intf0, &intf0alt0);
+USB_COMPOSITE_INTERFACE(intf1, &intf1alt0, &intf1alt1);
+
+USB_COMPOSITE_DESCRIPTORS(obex_descs, &intf0, &intf1);
/*-------------------------------------------------------------------------*/
@@ -195,67 +182,33 @@ static int obex_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
struct f_obex *obex = func_to_obex(f);
struct usb_composite_dev *cdev = f->config->cdev;
- if (intf == obex->ctrl_id) {
- if (alt != 0)
- goto fail;
+ if (intf == 0) {
/* NOP */
dev_dbg(&cdev->gadget->dev,
"reset obex ttyGS%d control\n", obex->port_num);
-
- } else if (intf == obex->data_id) {
- if (alt > 1)
- goto fail;
-
- if (obex->port.in->enabled) {
- dev_dbg(&cdev->gadget->dev,
- "reset obex ttyGS%d\n", obex->port_num);
- gserial_disconnect(&obex->port);
- }
-
- if (!obex->port.in->desc || !obex->port.out->desc) {
- dev_dbg(&cdev->gadget->dev,
- "init obex ttyGS%d\n", obex->port_num);
- if (config_ep_by_speed(cdev->gadget, f,
- obex->port.in) ||
- config_ep_by_speed(cdev->gadget, f,
- obex->port.out)) {
- obex->port.out->desc = NULL;
- obex->port.in->desc = NULL;
- goto fail;
- }
- }
-
- if (alt == 1) {
- dev_dbg(&cdev->gadget->dev,
+ } else if (intf == 1 && alt == 1) {
+ dev_dbg(&cdev->gadget->dev,
"activate obex ttyGS%d\n", obex->port_num);
- gserial_connect(&obex->port, obex->port_num);
- }
- } else
- goto fail;
+ obex->port.in = usb_function_get_ep(f, intf, 0);
+ if (!obex->port.in)
+ return -ENODEV;
+ obex->port.out = usb_function_get_ep(f, intf, 1);
+ if (!obex->port.out)
+ return -ENODEV;
- obex->cur_alt = alt;
+ gserial_connect(&obex->port, obex->port_num);
+ }
return 0;
-
-fail:
- return -EINVAL;
}
-static int obex_get_alt(struct usb_function *f, unsigned intf)
+static void obex_clear_alt(struct usb_function *f, unsigned intf, unsigned alt)
{
struct f_obex *obex = func_to_obex(f);
- return obex->cur_alt;
-}
-
-static void obex_disable(struct usb_function *f)
-{
- struct f_obex *obex = func_to_obex(f);
- struct usb_composite_dev *cdev = f->config->cdev;
-
- dev_dbg(&cdev->gadget->dev, "obex ttyGS%d disable\n", obex->port_num);
- gserial_disconnect(&obex->port);
+ if (intf == 1 && alt == 1)
+ gserial_disconnect(&obex->port);
}
/*-------------------------------------------------------------------------*/
@@ -303,15 +256,12 @@ static inline bool can_support_obex(struct usb_configuration *c)
return true;
}
-static int obex_bind(struct usb_configuration *c, struct usb_function *f)
+static int obex_prep_descs(struct usb_function *f)
{
- struct usb_composite_dev *cdev = c->cdev;
- struct f_obex *obex = func_to_obex(f);
+ struct usb_composite_dev *cdev = f->config->cdev;
struct usb_string *us;
- int status;
- struct usb_ep *ep;
- if (!can_support_obex(c))
+ if (!can_support_obex(f->config))
return -EINVAL;
us = usb_gstrings_attach(cdev, obex_strings,
@@ -322,63 +272,31 @@ static int obex_bind(struct usb_configuration *c, struct usb_function *f)
obex_data_nop_intf.iInterface = us[OBEX_DATA_IDX].id;
obex_data_intf.iInterface = us[OBEX_DATA_IDX].id;
- /* allocate instance-specific interface IDs, and patch descriptors */
-
- status = usb_interface_id(c, f);
- if (status < 0)
- goto fail;
- obex->ctrl_id = status;
-
- obex_control_intf.bInterfaceNumber = status;
- obex_cdc_union_desc.bMasterInterface0 = status;
-
- status = usb_interface_id(c, f);
- if (status < 0)
- goto fail;
- obex->data_id = status;
-
- obex_data_nop_intf.bInterfaceNumber = status;
- obex_data_intf.bInterfaceNumber = status;
- obex_cdc_union_desc.bSlaveInterface0 = status;
-
- /* allocate instance-specific endpoints */
-
- status = -ENODEV;
- ep = usb_ep_autoconfig(cdev->gadget, &obex_fs_ep_in_desc);
- if (!ep)
- goto fail;
- obex->port.in = ep;
+ return usb_function_set_descs(f, &obex_descs);
+}
- ep = usb_ep_autoconfig(cdev->gadget, &obex_fs_ep_out_desc);
- if (!ep)
- goto fail;
- obex->port.out = ep;
+static int obex_prep_vendor_descs(struct usb_function *f)
+{
+ struct f_obex *obex = func_to_obex(f);
+ int intf0_id, intf1_id;
- /* support all relevant hardware speeds... we expect that when
- * hardware is dual speed, all bulk-capable endpoints work at
- * both speeds
- */
+ intf0_id = usb_get_interface_id(f, 0);
+ intf1_id = usb_get_interface_id(f, 1);
- obex_hs_ep_in_desc.bEndpointAddress =
- obex_fs_ep_in_desc.bEndpointAddress;
- obex_hs_ep_out_desc.bEndpointAddress =
- obex_fs_ep_out_desc.bEndpointAddress;
+ obex->ctrl_id = intf0_id;
+ obex->data_id = intf1_id;
- status = usb_assign_descriptors(f, fs_function, hs_function, NULL);
- if (status)
- goto fail;
+ obex_cdc_union_desc.bMasterInterface0 = intf0_id;
+ obex_cdc_union_desc.bSlaveInterface0 = intf1_id;
- dev_dbg(&cdev->gadget->dev, "obex ttyGS%d: %s speed IN/%s OUT/%s\n",
- obex->port_num,
- gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full",
- obex->port.in->name, obex->port.out->name);
+ usb_altset_add_vendor_desc(f, 0, 0,
+ (struct usb_descriptor_header *)&obex_cdc_header_desc);
+ usb_altset_add_vendor_desc(f, 0, 0,
+ (struct usb_descriptor_header *)&obex_desc);
+ usb_altset_add_vendor_desc(f, 0, 0,
+ (struct usb_descriptor_header *)&obex_cdc_union_desc);
return 0;
-
-fail:
- ERROR(cdev, "%s/%p: can't bind, err %d\n", f->name, f, status);
-
- return status;
}
static inline struct f_serial_opts *to_f_serial_opts(struct config_item *item)
@@ -454,11 +372,6 @@ static void obex_free(struct usb_function *f)
kfree(obex);
}
-static void obex_unbind(struct usb_configuration *c, struct usb_function *f)
-{
- usb_free_all_descriptors(f);
-}
-
static struct usb_function *obex_alloc(struct usb_function_instance *fi)
{
struct f_obex *obex;
@@ -478,11 +391,10 @@ static struct usb_function *obex_alloc(struct usb_function_instance *fi)
obex->port.func.name = "obex";
/* descriptors are per-instance copies */
- obex->port.func.bind = obex_bind;
- obex->port.func.unbind = obex_unbind;
+ obex->port.func.prep_descs = obex_prep_descs;
+ obex->port.func.prep_vendor_descs = obex_prep_vendor_descs;
obex->port.func.set_alt = obex_set_alt;
- obex->port.func.get_alt = obex_get_alt;
- obex->port.func.disable = obex_disable;
+ obex->port.func.clear_alt = obex_clear_alt;
obex->port.func.free_func = obex_free;
obex->port.func.bind_deactivated = true;
--
1.9.1
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