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[PATCH] Generic HID layer - API

Browse source 
- fixed generic API (added neccessary EXPORT_SYMBOL, fixed hid.h to provide correct
  prototypes)
- extended hid_device with open/close/event function pointers to driver-specific
  functions
- added driver specific driver_data to hid_device

Signed-off-by: Jiri Kosina <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Jiri Kosina 2006-12-08 18:40:53 +01:00 • committed by Greg Kroah-Hartman
commit 229695e51e
6 changed files with 64 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

22
drivers/hid/hid-core.c
View file

@ -1,5 +1,5 @@
/*
* USB HID support for Linux
* HID support for Linux
*
* Copyright (c) 1999 Andreas Gal
* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
@ -31,8 +31,6 @@
#undef DEBUG
#undef DEBUG_DATA
#include <linux/usb.h>
#include <linux/hid.h>
#include <linux/hiddev.h>
@ -538,7 +536,7 @@ static void hid_free_report(struct hid_report *report)
* Free a device structure, all reports, and all fields.
*/
static void hid_free_device(struct hid_device *device)
void hid_free_device(struct hid_device *device)
{
unsigned i,j;
@ -555,6 +553,7 @@ static void hid_free_device(struct hid_device *device)
kfree(device->rdesc);
kfree(device);
}
EXPORT_SYMBOL_GPL(hid_free_device);
/*
* Fetch a report description item from the data stream. We support long
@ -629,7 +628,7 @@ static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
* enumerated, fields are attached to these reports.
*/
static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
struct hid_device *hid_parse_report(__u8 *start, unsigned size)
{
struct hid_device *device;
struct hid_parser *parser;
@ -719,6 +718,7 @@ static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
kfree(parser);
return NULL;
}
EXPORT_SYMBOL_GPL(hid_parse_report);
/*
* Convert a signed n-bit integer to signed 32-bit integer. Common
@ -767,10 +767,10 @@ static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
WARN_ON(n > 32);
report += offset >> 3; /* adjust byte index */
offset &= 7; /* now only need bit offset into one byte */
offset &= 7; /* now only need bit offset into one byte */
x = get_unaligned((u64 *) report);
x = le64_to_cpu(x);
x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
return (u32) x;
}
@ -829,7 +829,7 @@ static void hid_process_event(struct hid_device *hid, struct hid_field *field, s
* reporting to the layer).
*/
static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt)
void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt)
{
unsigned n;
unsigned count = field->report_count;
@ -875,7 +875,7 @@ static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u
exit:
kfree(value);
}
EXPORT_SYMBOL_GPL(hid_input_field);
/*
* Output the field into the report.
@ -900,7 +900,7 @@ static void hid_output_field(struct hid_field *field, __u8 *data)
* Create a report.
*/
static void hid_output_report(struct hid_report *report, __u8 *data)
void hid_output_report(struct hid_report *report, __u8 *data)
{
unsigned n;
@ -910,6 +910,7 @@ static void hid_output_report(struct hid_report *report, __u8 *data)
for (n = 0; n < report->maxfield; n++)
hid_output_field(report->field[n], data);
}
EXPORT_SYMBOL_GPL(hid_output_report);
/*
* Set a field value. The report this field belongs to has to be
@ -937,4 +938,5 @@ int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
field->value[offset] = value;
return 0;
}
EXPORT_SYMBOL_GPL(hid_set_field);

19
drivers/hid/hid-input.c
View file

@ -727,8 +727,9 @@ void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
list_for_each_entry(hidinput, &hid->inputs, list)
input_sync(hidinput->input);
}
EXPORT_SYMBOL_GPL(hidinput_report_event);
static int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
{
struct hid_report *report;
int i, j;
@ -743,6 +744,7 @@ static int hidinput_find_field(struct hid_device *hid, unsigned int type, unsign
}
return -1;
}
EXPORT_SYMBOL_GPL(hidinput_find_field);
/*
* Register the input device; print a message.
@ -752,7 +754,6 @@ static int hidinput_find_field(struct hid_device *hid, unsigned int type, unsign
int hidinput_connect(struct hid_device *hid)
{
struct usb_device *dev = hid->dev;
struct hid_report *report;
struct hid_input *hidinput = NULL;
struct input_dev *input_dev;
@ -786,14 +787,17 @@ int hidinput_connect(struct hid_device *hid)
}
input_dev->private = hid;
input_dev->event = hidinput_input_event;
input_dev->open = hidinput_open;
input_dev->close = hidinput_close;
input_dev->event = hid->hidinput_input_event;
input_dev->open = hid->hidinput_open;
input_dev->close = hid->hidinput_close;
input_dev->name = hid->name;
input_dev->phys = hid->phys;
input_dev->uniq = hid->uniq;
usb_to_input_id(dev, &input_dev->id);
input_dev->id.bustype = hid->bus;
input_dev->id.vendor = hid->vendor;
input_dev->id.product = hid->product;
input_dev->id.version = hid->version;
input_dev->cdev.dev = &hid->intf->dev;
hidinput->input = input_dev;
@ -827,6 +831,7 @@ int hidinput_connect(struct hid_device *hid)
return 0;
}
EXPORT_SYMBOL_GPL(hidinput_connect);
void hidinput_disconnect(struct hid_device *hid)
{
@ -838,3 +843,5 @@ void hidinput_disconnect(struct hid_device *hid)
kfree(hidinput);
}
}
EXPORT_SYMBOL_GPL(hidinput_disconnect);

9
drivers/usb/input/hid-core.c
View file

@ -497,7 +497,7 @@ void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsign
spin_unlock_irqrestore(&hid->ctrllock, flags);
}
static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
{
struct hid_device *hid = dev->private;
struct hid_field *field;
@ -1231,6 +1231,10 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf)
le16_to_cpu(dev->descriptor.idVendor),
le16_to_cpu(dev->descriptor.idProduct));
hid->bus = BUS_USB;
hid->vendor = dev->descriptor.idVendor;
hid->product = dev->descriptor.idProduct;
usb_make_path(dev, hid->phys, sizeof(hid->phys));
strlcat(hid->phys, "/input", sizeof(hid->phys));
len = strlen(hid->phys);
@ -1250,6 +1254,9 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf)
hid->urbctrl->setup_dma = hid->cr_dma;
hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
hid->hidinput_input_event = usb_hidinput_input_event;
hid->hidinput_open = hidinput_open;
hid->hidinput_close = hidinput_close;
return hid;

2
drivers/usb/input/hid-ff.c
View file

@ -79,3 +79,5 @@ int hid_ff_init(struct hid_device* hid)
return init->init(hid);
}
EXPORT_SYMBOL_GPL(hid_ff_init);

2
drivers/usb/input/hiddev.c
View file

@ -197,7 +197,7 @@ void hiddev_hid_event(struct hid_device *hid, struct hid_field *field,
hiddev_send_event(hid, &uref);
}
EXPORT_SYMBOL_GPL(hiddev_hid_event);
void hiddev_report_event(struct hid_device *hid, struct hid_report *report)
{