Use the new f_hid interface in order for the old to be removed.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
---
drivers/usb/gadget/legacy/Kconfig | 1 +
drivers/usb/gadget/legacy/hid.c | 78 +++++++++++++++++++++++++++------------
2 files changed, 56 insertions(+), 23 deletions(-)
diff --git a/drivers/usb/gadget/legacy/Kconfig b/drivers/usb/gadget/legacy/Kconfig
index 8011b19..fd48ef3 100644
--- a/drivers/usb/gadget/legacy/Kconfig
+++ b/drivers/usb/gadget/legacy/Kconfig
@@ -420,6 +420,7 @@ endif # TTY
config USB_G_HID
tristate "HID Gadget"
select USB_LIBCOMPOSITE
+ select USB_F_HID
help
The HID gadget driver provides generic emulation of USB
Human Interface Devices (HID).
diff --git a/drivers/usb/gadget/legacy/hid.c b/drivers/usb/gadget/legacy/hid.c
index 26cb4ea..633fe7e 100644
--- a/drivers/usb/gadget/legacy/hid.c
+++ b/drivers/usb/gadget/legacy/hid.c
@@ -17,11 +17,14 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/usb/composite.h>
+#include <linux/usb/g_hid.h>
#include "gadget_chips.h"
#define DRIVER_DESC "HID Gadget"
#define DRIVER_VERSION "2010/03/16"
+#include "u_hid.h"
+
/*-------------------------------------------------------------------------*/
#define HIDG_VENDOR_NUM 0x0525 /* XXX NetChip */
@@ -29,18 +32,9 @@
/*-------------------------------------------------------------------------*/
-/*
- * kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module. So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
- */
-#define USBF_HID_INCLUDED
-#include "f_hid.c"
-
-
struct hidg_func_node {
+ struct usb_function_instance *fi;
+ struct usb_function *f;
struct list_head node;
struct hidg_func_descriptor *func;
};
@@ -114,8 +108,8 @@ static struct usb_gadget_strings *dev_strings[] = {
static int __init do_config(struct usb_configuration *c)
{
- struct hidg_func_node *e;
- int func = 0, status = 0;
+ struct hidg_func_node *e, *n;
+ int status = 0;
if (gadget_is_otg(c->cdev->gadget)) {
c->descriptors = otg_desc;
@@ -123,11 +117,24 @@ static int __init do_config(struct usb_configuration *c)
}
list_for_each_entry(e, &hidg_func_list, node) {
- status = hidg_bind_config(c, e->func, func++);
- if (status)
- break;
+ e->f = usb_get_function(e->fi);
+ if (IS_ERR(e->f))
+ goto put;
+ status = usb_add_function(c, e->f);
+ if (status < 0) {
+ usb_put_function(e->f);
+ goto put;
+ }
}
+ return 0;
+put:
+ list_for_each_entry(n, &hidg_func_list, node) {
+ if (n == e)
+ break;
+ usb_remove_function(c, n->f);
+ usb_put_function(n->f);
+ }
return status;
}
@@ -144,6 +151,8 @@ static int __init hid_bind(struct usb_composite_dev *cdev)
{
struct usb_gadget *gadget = cdev->gadget;
struct list_head *tmp;
+ struct hidg_func_node *n, *m;
+ struct f_hid_opts *hid_opts;
int status, funcs = 0;
list_for_each(tmp, &hidg_func_list)
@@ -152,10 +161,20 @@ static int __init hid_bind(struct usb_composite_dev *cdev)
if (!funcs)
return -ENODEV;
- /* set up HID */
- status = ghid_setup(cdev->gadget, funcs);
- if (status < 0)
- return status;
+ list_for_each_entry(n, &hidg_func_list, node) {
+ n->fi = usb_get_function_instance("hid");
+ if (IS_ERR(n->fi)) {
+ status = PTR_ERR(n->fi);
+ goto put;
+ }
+ hid_opts = container_of(n->fi, struct f_hid_opts, func_inst);
+ hid_opts->subclass = n->func->subclass;
+ hid_opts->protocol = n->func->protocol;
+ hid_opts->report_length = n->func->report_length;
+ hid_opts->report_desc_length = n->func->report_desc_length;
+ hid_opts->report_desc = n->func->report_desc;
+ }
+
/* Allocate string descriptor numbers ... note that string
* contents can be overridden by the composite_dev glue.
@@ -163,24 +182,37 @@ static int __init hid_bind(struct usb_composite_dev *cdev)
status = usb_string_ids_tab(cdev, strings_dev);
if (status < 0)
- return status;
+ goto put;
device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
/* register our configuration */
status = usb_add_config(cdev, &config_driver, do_config);
if (status < 0)
- return status;
+ goto put;
usb_composite_overwrite_options(cdev, &coverwrite);
dev_info(&gadget->dev, DRIVER_DESC ", version: " DRIVER_VERSION "\n");
return 0;
+
+put:
+ list_for_each_entry(m, &hidg_func_list, node) {
+ if (m == n)
+ break;
+ usb_put_function_instance(m->fi);
+ }
+ return status;
}
static int __exit hid_unbind(struct usb_composite_dev *cdev)
{
- ghid_cleanup();
+ struct hidg_func_node *n;
+
+ list_for_each_entry(n, &hidg_func_list, node) {
+ usb_put_function(n->f);
+ usb_put_function_instance(n->fi);
+ }
return 0;
}
--
1.9.1
--
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