Commit 229695e5 authored by Jiri Kosina's avatar Jiri Kosina Committed by Greg Kroah-Hartman

[PATCH] Generic HID layer - API

- 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: default avatarJiri Kosina <jkosina@suse.cz>
Signed-off-by: Marcel Holtmann's avatarMarcel Holtmann <marcel@holtmann.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent dde5845a
/*
* 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);
......@@ -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);
......@@ -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;
......
......@@ -79,3 +79,5 @@ int hid_ff_init(struct hid_device* hid)
return init->init(hid);
}
EXPORT_SYMBOL_GPL(hid_ff_init);
......@@ -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)
{
......
......@@ -403,11 +403,17 @@ struct hid_device { /* device report descriptor */
unsigned collection_size; /* Number of allocated hid_collections */
unsigned maxcollection; /* Number of parsed collections */
unsigned maxapplication; /* Number of applications */
unsigned short bus; /* BUS ID */
unsigned short vendor; /* Vendor ID */
unsigned short product; /* Product ID */
unsigned version; /* HID version */
unsigned country; /* HID country */
struct hid_report_enum report_enum[HID_REPORT_TYPES];
struct usb_device *dev; /* USB device */
struct usb_device *dev; /* device */
/* USB specific fields */
struct usb_interface *intf; /* USB interface */
int ifnum; /* USB interface number */
......@@ -454,6 +460,13 @@ struct hid_device { /* device report descriptor */
char phys[64]; /* Device physical location */
char uniq[64]; /* Device unique identifier (serial #) */
void *driver_data;
/* device-specific function pointers */
int (*hidinput_input_event) (struct input_dev *, unsigned int, unsigned int, int);
int (*hidinput_open) (struct input_dev *);
void (*hidinput_close) (struct input_dev *);
#ifdef CONFIG_USB_HIDINPUT_POWERBOOK
unsigned long pb_pressed_fn[NBITS(KEY_MAX)];
unsigned long pb_pressed_numlock[NBITS(KEY_MAX)];
......@@ -502,17 +515,15 @@ struct hid_descriptor {
/* Applications from HID Usage Tables 4/8/99 Version 1.1 */
/* We ignore a few input applications that are not widely used */
#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001))
#else
#define IS_INPUT_APPLICATION(a) (0)
#endif
/* HID core API */
extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
extern int hidinput_connect(struct hid_device *);
extern void hidinput_disconnect(struct hid_device *);
#else
#define IS_INPUT_APPLICATION(a) (0)
static inline void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) { }
static inline void hidinput_report_event(struct hid_device *hid, struct hid_report *report) { }
static inline int hidinput_connect(struct hid_device *hid) { return -ENODEV; }
static inline void hidinput_disconnect(struct hid_device *hid) { }
#endif
int hid_set_field(struct hid_field *, unsigned, __s32);
int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
......@@ -536,5 +547,14 @@ static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; }
#else
static inline int hid_ff_init(struct hid_device *hid) { return -1; }
#endif
#ifdef DEBUG
#define dbg(format, arg...) printk(KERN_DEBUG "%s: " format "\n" , \
__FILE__ , ## arg)
#else
#define dbg(format, arg...) do {} while (0)
#endif
#define err(format, arg...) printk(KERN_ERR "%s: " format "\n" , \
__FILE__ , ## arg)
#endif
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