diff options
| -rw-r--r-- | drivers/hid/hid-core.c | 474 | ||||
| -rw-r--r-- | drivers/hid/hid-input.c | 2 | ||||
| -rw-r--r-- | drivers/hid/usbhid/hid-core.c | 44 | ||||
| -rw-r--r-- | drivers/hid/usbhid/usbhid.h | 2 | ||||
| -rw-r--r-- | include/linux/hid.h | 104 | ||||
| -rw-r--r-- | net/bluetooth/hidp/core.c | 64 |
6 files changed, 586 insertions, 104 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 426ac5add585..017fc20167d4 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -534,9 +534,10 @@ static void hid_free_report(struct hid_report *report) * Free a device structure, all reports, and all fields. */ -void hid_free_device(struct hid_device *device) +static void hid_device_release(struct device *dev) { - unsigned i,j; + struct hid_device *device = container_of(dev, struct hid_device, dev); + unsigned i, j; for (i = 0; i < HID_REPORT_TYPES; i++) { struct hid_report_enum *report_enum = device->report_enum + i; @@ -552,7 +553,6 @@ void hid_free_device(struct hid_device *device) kfree(device->collection); kfree(device); } -EXPORT_SYMBOL_GPL(hid_free_device); /* * Fetch a report description item from the data stream. We support long @@ -622,18 +622,24 @@ static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item) return NULL; } -/* +/** + * hid_parse_report - parse device report + * + * @device: hid device + * @start: report start + * @size: report size + * * Parse a report description into a hid_device structure. Reports are * enumerated, fields are attached to these reports. + * 0 returned on success, otherwise nonzero error value. */ - -struct hid_device *hid_parse_report(__u8 *start, unsigned size) +int hid_parse_report(struct hid_device *device, __u8 *start, + unsigned size) { - struct hid_device *device; struct hid_parser *parser; struct hid_item item; __u8 *end; - unsigned i; + int ret; static int (*dispatch_type[])(struct hid_parser *parser, struct hid_item *item) = { hid_parser_main, @@ -642,76 +648,54 @@ struct hid_device *hid_parse_report(__u8 *start, unsigned size) hid_parser_reserved }; - if (!(device = kzalloc(sizeof(struct hid_device), GFP_KERNEL))) - return NULL; - - if (!(device->collection = kzalloc(sizeof(struct hid_collection) * - HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) { - kfree(device); - return NULL; - } - device->collection_size = HID_DEFAULT_NUM_COLLECTIONS; - - for (i = 0; i < HID_REPORT_TYPES; i++) - INIT_LIST_HEAD(&device->report_enum[i].report_list); - - if (!(device->rdesc = kmalloc(size, GFP_KERNEL))) { - kfree(device->collection); - kfree(device); - return NULL; - } + device->rdesc = kmalloc(size, GFP_KERNEL); + if (device->rdesc == NULL) + return -ENOMEM; memcpy(device->rdesc, start, size); device->rsize = size; - if (!(parser = vmalloc(sizeof(struct hid_parser)))) { - kfree(device->rdesc); - kfree(device->collection); - kfree(device); - return NULL; + parser = vmalloc(sizeof(struct hid_parser)); + if (!parser) { + ret = -ENOMEM; + goto err; } + memset(parser, 0, sizeof(struct hid_parser)); parser->device = device; end = start + size; + ret = -EINVAL; while ((start = fetch_item(start, end, &item)) != NULL) { if (item.format != HID_ITEM_FORMAT_SHORT) { dbg_hid("unexpected long global item\n"); - hid_free_device(device); - vfree(parser); - return NULL; + goto err; } if (dispatch_type[item.type](parser, &item)) { dbg_hid("item %u %u %u %u parsing failed\n", item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag); - hid_free_device(device); - vfree(parser); - return NULL; + goto err; } if (start == end) { if (parser->collection_stack_ptr) { dbg_hid("unbalanced collection at end of report description\n"); - hid_free_device(device); - vfree(parser); - return NULL; + goto err; } if (parser->local.delimiter_depth) { dbg_hid("unbalanced delimiter at end of report description\n"); - hid_free_device(device); - vfree(parser); - return NULL; + goto err; } vfree(parser); - return device; + return 0; } } dbg_hid("item fetching failed at offset %d\n", (int)(end - start)); - hid_free_device(device); +err: vfree(parser); - return NULL; + return ret; } EXPORT_SYMBOL_GPL(hid_parse_report); @@ -815,9 +799,73 @@ static __inline__ int search(__s32 *array, __s32 value, unsigned n) return -1; } -static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, int interrupt) +/** + * hid_match_report - check if driver's raw_event should be called + * + * @hid: hid device + * @report_type: type to match against + * + * compare hid->driver->report_table->report_type to report->type + */ +static int hid_match_report(struct hid_device *hid, struct hid_report *report) { + const struct hid_report_id *id = hid->driver->report_table; + + if (!id) /* NULL means all */ + return 1; + + for (; id->report_type != HID_TERMINATOR; id++) + if (id->report_type == HID_ANY_ID || + id->report_type == report->type) + return 1; + return 0; +} + +/** + * hid_match_usage - check if driver's event should be called + * + * @hid: hid device + * @usage: usage to match against + * + * compare hid->driver->usage_table->usage_{type,code} to + * usage->usage_{type,code} + */ +static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage) +{ + const struct hid_usage_id *id = hid->driver->usage_table; + + if (!id) /* NULL means all */ + return 1; + + for (; id->usage_type != HID_ANY_ID - 1; id++) + if ((id->usage_hid == HID_ANY_ID || + id->usage_hid == usage->hid) && + (id->usage_type == HID_ANY_ID || + id->usage_type == usage->type) && + (id->usage_code == HID_ANY_ID || + id->usage_code == usage->code)) + return 1; + return 0; +} + +static void hid_process_event(struct hid_device *hid, struct hid_field *field, + struct hid_usage *usage, __s32 value, int interrupt) +{ + struct hid_driver *hdrv = hid->driver; + int ret; + hid_dump_input(usage, value); + + if (hdrv && hdrv->event && hid_match_usage(hid, usage)) { + ret = hdrv->event(hid, field, usage, value); + if (ret != 0) { + if (ret < 0) + dbg_hid("%s's event failed with %d\n", + hdrv->name, ret); + return; + } + } + if (hid->claimed & HID_CLAIMED_INPUT) hidinput_hid_event(hid, field, usage, value); if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event) @@ -946,44 +994,47 @@ int hid_set_field(struct hid_field *field, unsigned offset, __s32 value) } EXPORT_SYMBOL_GPL(hid_set_field); -int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt) +static struct hid_report *hid_get_report(struct hid_report_enum *report_enum, + const u8 *data) { - struct hid_report_enum *report_enum = hid->report_enum + type; struct hid_report *report; - int n, rsize, i; + unsigned int n = 0; /* Normally report number is 0 */ - if (!hid) - return -ENODEV; + /* Device uses numbered reports, data[0] is report number */ + if (report_enum->numbered) + n = *data; - if (!size) { - dbg_hid("empty report\n"); - return -1; - } + report = report_enum->report_id_hash[n]; + if (report == NULL) + dbg_hid("undefined report_id %u received\n", n); - dbg_hid("report (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un"); + return report; +} - n = 0; /* Normally report number is 0 */ - if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */ - n = *data++; - size--; - } +void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, + int interrupt) +{ + struct hid_report_enum *report_enum = hid->report_enum + type; + struct hid_report *report; + unsigned int a; + int rsize, csize = size; + u8 *cdata = data; - /* dump the report */ - dbg_hid("report %d (size %u) = ", n, size); - for (i = 0; i < size; i++) - dbg_hid_line(" %02x", data[i]); - dbg_hid_line("\n"); + report = hid_get_report(report_enum, data); + if (!report) + return; - if (!(report = report_enum->report_id_hash[n])) { - dbg_hid("undefined report_id %d received\n", n); - return -1; + if (report_enum->numbered) { + cdata++; + csize--; } rsize = ((report->size - 1) >> 3) + 1; - if (size < rsize) { - dbg_hid("report %d is too short, (%d < %d)\n", report->id, size, rsize); - memset(data + size, 0, rsize - size); + if (csize < rsize) { + dbg_hid("report %d is too short, (%d < %d)\n", report->id, + csize, rsize); + memset(cdata + csize, 0, rsize - csize); } if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event) @@ -996,24 +1047,295 @@ int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int i hidraw_report_event(hid, data, size); } - for (n = 0; n < report->maxfield; n++) - hid_input_field(hid, report->field[n], data, interrupt); + for (a = 0; a < report->maxfield; a++) + hid_input_field(hid, report->field[a], cdata, interrupt); if (hid->claimed & HID_CLAIMED_INPUT) hidinput_report_event(hid, report); +} +EXPORT_SYMBOL_GPL(hid_report_raw_event); + +/** + * hid_input_report - report data from lower layer (usb, bt...) + * + * @hid: hid device + * @type: HID report type (HID_*_REPORT) + * @data: report contents + * @size: size of data parameter + * @interrupt: called from atomic? + * + * This is data entry for lower layers. + */ +int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt) +{ + struct hid_report_enum *report_enum = hid->report_enum + type; + struct hid_driver *hdrv = hid->driver; + struct hid_report *report; + unsigned int i; + int ret; + + if (!hid || !hid->driver) + return -ENODEV; + + if (!size) { + dbg_hid("empty report\n"); + return -1; + } + + dbg_hid("report (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un"); + + report = hid_get_report(report_enum, data); + if (!report) + return -1; + + /* dump the report */ + dbg_hid("report %d (size %u) = ", report->id, size); + for (i = 0; i < size; i++) + dbg_hid_line(" %02x", data[i]); + dbg_hid_line("\n"); + + if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) { + ret = hdrv->raw_event(hid, report, data, size); + if (ret != 0) + return ret < 0 ? ret : 0; + } + + hid_report_raw_event(hid, type, data, size, interrupt); return 0; } EXPORT_SYMBOL_GPL(hid_input_report); +static bool hid_match_one_id(struct hid_device *hdev, + const struct hid_device_id *id) +{ + return id->bus == hdev->bus && + (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) && + (id->product == HID_ANY_ID || id->product == hdev->product); +} + +static const struct hid_device_id *hid_match_id(struct hid_device *hdev, + const struct hid_device_id *id) +{ + for (; id->bus; id++) + if (hid_match_one_id(hdev, id)) + return id; + + return NULL; +} + +static const struct hid_device_id hid_blacklist[] = { + { } +}; + +static int hid_bus_match(struct device *dev, struct device_driver *drv) +{ + struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver); + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + + if (!hid_match_id(hdev, hdrv->id_table)) + return 0; + + /* generic wants all non-blacklisted */ + if (!strncmp(hdrv->name, "generic-", 8)) + return !hid_match_id(hdev, hid_blacklist); + + return 1; +} + +static int hid_device_probe(struct device *dev) +{ + struct hid_driver *hdrv = container_of(dev->driver, + struct hid_driver, driver); + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + const struct hid_device_id *id; + int ret = 0; + + if (!hdev->driver) { + if (hdrv->probe) { + ret = -ENODEV; + + id = hid_match_id(hdev, hdrv->id_table); + if (id) + ret = hdrv->probe(hdev, id); + } + if (!ret) + hdev->driver = hdrv; + } + return ret; +} + +static int hid_device_remove(struct device *dev) +{ + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + struct hid_driver *hdrv = hdev->driver; + + if (hdrv) { + if (hdrv->remove) + hdrv->remove(hdev); + hdev->driver = NULL; + } + + return 0; +} + +static int hid_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct hid_device *hdev = container_of(dev, struct hid_device, dev); + + if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X", + hdev->bus, hdev->vendor, hdev->product)) + return -ENOMEM; + + if (add_uevent_var(env, "HID_NAME=%s", hdev->name)) + return -ENOMEM; + + if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys)) + return -ENOMEM; + + if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq)) + return -ENOMEM; + + if (add_uevent_var(env, "MODALIAS=hid:b%04Xv%08Xp%08X", + hdev->bus, hdev->vendor, hdev->product)) + return -ENOMEM; + + return 0; +} + +static struct bus_type hid_bus_type = { + .name = "hid", + .match = hid_bus_match, + .probe = hid_device_probe, + .remove = hid_device_remove, + .uevent = hid_uevent, +}; + +int hid_add_device(struct hid_device *hdev) +{ + static atomic_t id = ATOMIC_INIT(0); + int ret; + + if (WARN_ON(hdev->status & HID_STAT_ADDED)) + return -EBUSY; + + /* XXX hack, any other cleaner solution < 20 bus_id bytes? */ + sprintf(hdev->dev.bus_id, "%04X:%04X:%04X.%04X", hdev->bus, + hdev->vendor, hdev->product, atomic_inc_return(&id)); + + ret = device_add(&hdev->dev); + if (!ret) + hdev->status |= HID_STAT_ADDED; + + return ret; +} +EXPORT_SYMBOL_GPL(hid_add_device); + +/** + * hid_allocate_device - allocate new hid device descriptor + * + * Allocate and initialize hid device, so that hid_destroy_device might be + * used to free it. + * + * New hid_device pointer is returned on success, otherwise ERR_PTR encoded + * error value. + */ +struct hid_device *hid_allocate_device(void) +{ + struct hid_device *hdev; + unsigned int i; + int ret = -ENOMEM; + + hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); + if (hdev == NULL) + return ERR_PTR(ret); + + device_initialize(&hdev->dev); + hdev->dev.release = hid_device_release; + hdev->dev.bus = &hid_bus_type; + + hdev->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS, + sizeof(struct hid_collection), GFP_KERNEL); + if (hdev->collection == NULL) + goto err; + hdev->collection_size = HID_DEFAULT_NUM_COLLECTIONS; + + for (i = 0; i < HID_REPORT_TYPES; i++) + INIT_LIST_HEAD(&hdev->report_enum[i].report_list); + + return hdev; +err: + put_device(&hdev->dev); + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(hid_allocate_device); + +static void hid_remove_device(struct hid_device *hdev) +{ + if (hdev->status & HID_STAT_ADDED) { + device_del(&hdev->dev); + hdev->status &= ~HID_STAT_ADDED; + } +} + +/** + * hid_destroy_device - free previously allocated device + * + * @hdev: hid device + * + * If you allocate hid_device through hid_allocate_device, you should ever + * free by this function. + */ +void hid_destroy_device(struct hid_device *hdev) +{ + hid_remove_device(hdev); + put_device(&hdev->dev); +} +EXPORT_SYMBOL_GPL(hid_destroy_device); + +int __hid_register_driver(struct hid_driver *hdrv, struct module *owner, + const char *mod_name) +{ + hdrv->driver.name = hdrv->name; + hdrv->driver.bus = &hid_bus_type; + hdrv->driver.owner = owner; + hdrv->driver.mod_name = mod_name; + + return driver_register(&hdrv->driver); +} +EXPORT_SYMBOL_GPL(__hid_register_driver); + +void hid_unregister_driver(struct hid_driver *hdrv) +{ + driver_unregister(&hdrv->driver); +} +EXPORT_SYMBOL_GPL(hid_unregister_driver); + static int __init hid_init(void) { - return hidraw_init(); + int ret; + + ret = bus_register(&hid_bus_type); + if (ret) { + printk(KERN_ERR "HID: can't register hid bus\n"); + goto err; + } + + ret = hidraw_init(); + if (ret) + goto err_bus; + + return 0; +err_bus: + bus_unregister(&hid_bus_type); +err: + return ret; } static void __exit hid_exit(void) { hidraw_exit(); + bus_unregister(&hid_bus_type); } module_init(hid_init); diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 1b2e8dc3398d..4ae5603804e7 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1032,7 +1032,7 @@ int hidinput_connect(struct hid_device *hid) input_dev->id.vendor = hid->vendor; input_dev->id.product = hid->product; input_dev->id.version = hid->version; - input_dev->dev.parent = hid->dev; + input_dev->dev.parent = hid->dev.parent; hidinput->input = input_dev; list_add_tail(&hidinput->list, &hid->inputs); } diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 27fe4d8912cb..5955d05ae542 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -770,8 +770,15 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) dbg_hid_line(" %02x", (unsigned char) rdesc[n]); dbg_hid_line("\n"); - if (!(hid = hid_parse_report(rdesc, n))) { + hid = hid_allocate_device(); + if (IS_ERR(hid)) { + kfree(rdesc); + return NULL; + } + + if (hid_parse_report(hid, rdesc, n)) { dbg_hid("parsing report descriptor failed\n"); + hid_destroy_device(hid); kfree(rdesc); return NULL; } @@ -798,10 +805,8 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) if (insize > HID_MAX_BUFFER_SIZE) insize = HID_MAX_BUFFER_SIZE; - if (hid_alloc_buffers(dev, hid)) { - hid_free_buffers(dev, hid); + if (hid_alloc_buffers(dev, hid)) goto fail; - } hid->name[0] = 0; @@ -881,7 +886,7 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) hid->version = le16_to_cpu(hdesc->bcdHID); hid->country = hdesc->bCountryCode; - hid->dev = &intf->dev; + hid->dev.parent = &intf->dev; usbhid->intf = intf; usbhid->ifnum = interface->desc.bInterfaceNumber; @@ -925,7 +930,7 @@ fail: hid_free_buffers(dev, hid); kfree(usbhid); fail_no_usbhid: - hid_free_device(hid); + hid_destroy_device(hid); return NULL; } @@ -964,14 +969,14 @@ static void hid_disconnect(struct usb_interface *intf) hid_free_buffers(hid_to_usb_dev(hid), hid); kfree(usbhid); - hid_free_device(hid); + hid_destroy_device(hid); } static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct hid_device *hid; char path[64]; - int i; + int i, ret; char *c; dbg_hid("HID probe called for ifnum %d\n", @@ -1037,7 +1042,12 @@ static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id) printk(": USB HID v%x.%02x %s [%s] on %s\n", hid->version >> 8, hid->version & 0xff, c, hid->name, path); - return 0; + ret = hid_add_device(hid); + if (ret) { + dev_err(&intf->dev, "can't add hid device: %d\n", ret); + hid_disconnect(intf); + } + return ret; } static int hid_suspend(struct usb_interface *intf, pm_message_t message) @@ -1107,9 +1117,22 @@ static struct usb_driver hid_driver = { .supports_autosuspend = 1, }; +static const struct hid_device_id hid_usb_table[] = { + { HID_USB_DEVICE(HID_ANY_ID, HID_ANY_ID) }, + { } +}; + +static struct hid_driver hid_usb_driver = { + .name = "generic-usb", + .id_table = hid_usb_table, +}; + static int __init hid_init(void) { int retval; + retval = hid_register_driver(&hid_usb_driver); + if (retval) + goto hid_register_fail; retval = usbhid_quirks_init(quirks_param); if (retval) goto usbhid_quirks_init_fail; @@ -1127,6 +1150,8 @@ usb_register_fail: hiddev_init_fail: usbhid_quirks_exit(); usbhid_quirks_init_fail: + hid_unregister_driver(&hid_usb_driver); +hid_register_fail: return retval; } @@ -1135,6 +1160,7 @@ static void __exit hid_exit(void) usb_deregister(&hid_driver); hiddev_exit(); usbhid_quirks_exit(); + hid_unregister_driver(&hid_usb_driver); } module_init(hid_init); diff --git a/drivers/hid/usbhid/usbhid.h b/drivers/hid/usbhid/usbhid.h index 62d2d7c925bd..b47f991867e9 100644 --- a/drivers/hid/usbhid/usbhid.h +++ b/drivers/hid/usbhid/usbhid.h @@ -82,7 +82,7 @@ struct usbhid_device { }; #define hid_to_usb_dev(hid_dev) \ - container_of(hid_dev->dev->parent, struct usb_device, dev) + container_of(hid_dev->dev.parent->parent, struct usb_device, dev) #endif diff --git a/include/linux/hid.h b/include/linux/hid.h index b7a17762a0b2..c4bea0eda85b 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -418,6 +418,8 @@ struct hid_control_fifo { #define HID_CLAIMED_HIDDEV 2 #define HID_CLAIMED_HIDRAW 4 +#define HID_STAT_ADDED 1 + #define HID_CTRL_RUNNING 1 #define HID_OUT_RUNNING 2 #define HID_IN_RUNNING 3 @@ -432,22 +434,26 @@ struct hid_input { struct input_dev *input; }; +struct hid_driver; + struct hid_device { /* device report descriptor */ - __u8 *rdesc; + __u8 *rdesc; unsigned rsize; struct hid_collection *collection; /* List of HID collections */ 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 */ + __u16 bus; /* BUS ID */ + __u32 vendor; /* Vendor ID */ + __u32 product; /* Product ID */ + __u32 version; /* HID version */ unsigned country; /* HID country */ struct hid_report_enum report_enum[HID_REPORT_TYPES]; - struct device *dev; /* device */ + struct device dev; /* device */ + struct hid_driver *driver; + unsigned int status; /* see STAT flags above */ unsigned claimed; /* Claimed by hidinput, hiddev? */ unsigned quirks; /* Various quirks the device can pull on us */ @@ -483,6 +489,16 @@ struct hid_device { /* device report descriptor */ #endif }; +static inline void *hid_get_drvdata(struct hid_device *hdev) +{ + return dev_get_drvdata(&hdev->dev); +} + +static inline void hid_set_drvdata(struct hid_device *hdev, void *data) +{ + dev_set_drvdata(&hdev->dev, data); +} + #define HID_GLOBAL_STACK_SIZE 4 #define HID_COLLECTION_STACK_SIZE 4 @@ -511,6 +527,61 @@ struct hid_descriptor { struct hid_class_descriptor desc[1]; } __attribute__ ((packed)); +#define HID_DEVICE(b, ven, prod) \ + .bus = (b), \ + .vendor = (ven), .product = (prod) + +#define HID_USB_DEVICE(ven, prod) HID_DEVICE(BUS_USB, ven, prod) +#define HID_BLUETOOTH_DEVICE(ven, prod) HID_DEVICE(BUS_BLUETOOTH, ven, prod) + +#define HID_REPORT_ID(rep) \ + .report_type = (rep) +#define HID_USAGE_ID(uhid, utype, ucode) \ + .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode) +/* we don't want to catch types and codes equal to 0 */ +#define HID_TERMINATOR (HID_ANY_ID - 1) + +struct hid_report_id { + __u32 report_type; +}; +struct hid_usage_id { + __u32 usage_hid; + __u32 usage_type; + __u32 usage_code; +}; + +/** + * struct hid_driver + * @name: driver name (e.g. "Footech_bar-wheel") + * @id_table: which devices is this driver for (must be non-NULL for probe + * to be called) + * @probe: new device inserted + * @remove: device removed (NULL if not a hot-plug capable driver) + * @report_table: on which reports to call raw_event (NULL means all) + * @raw_event: if report in report_table, this hook is called (NULL means nop) + * @usage_table: on which events to call event (NULL means all) + * @event: if usage in usage_table, this hook is called (NULL means nop) + * + * raw_event and event should return 0 on no action performed, 1 when no + * further processing should be done and negative on error + */ +struct hid_driver { + char *name; + const struct hid_device_id *id_table; + + int (*probe)(struct hid_device *dev, const struct hid_device_id *id); + void (*remove)(struct hid_device *dev); + + const struct hid_report_id *report_table; + int (*raw_event)(struct hid_device *hdev, struct hid_report *report, + u8 *data, int size); + const struct hid_usage_id *usage_table; + int (*event)(struct hid_device *hdev, struct hid_field *field, + struct hid_usage *usage, __s32 value); +/* private: */ + struct device_driver driver; +}; + /* 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) || (a == 0x000d0002)) @@ -521,6 +592,17 @@ struct hid_descriptor { extern int hid_debug; #endif +extern int hid_add_device(struct hid_device *); +extern void hid_destroy_device(struct hid_device *); + +extern int __must_check __hid_register_driver(struct hid_driver *, + struct module *, const char *mod_name); +static inline int __must_check hid_register_driver(struct hid_driver *driver) +{ + return __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME); +} +extern void hid_unregister_driver(struct hid_driver *); + 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 *); @@ -533,8 +615,14 @@ int hidinput_mapping_quirks(struct hid_usage *, struct input_dev *, unsigned lon int hidinput_event_quirks(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); int hidinput_apple_event(struct hid_device *, struct input_dev *, struct hid_usage *, __s32); void hid_output_report(struct hid_report *report, __u8 *data); -void hid_free_device(struct hid_device *device); -struct hid_device *hid_parse_report(__u8 *start, unsigned size); +struct hid_device *hid_allocate_device(void); +int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size); + +void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, + int interrupt); + +extern int hid_generic_init(void); +extern void hid_generic_exit(void); /* HID quirks API */ u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct); diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c index 96434d774c84..56a51f91591a 100644 --- a/net/bluetooth/hidp/core.c +++ b/net/bluetooth/hidp/core.c @@ -578,7 +578,7 @@ static int hidp_session(void *arg) if (session->hid) { if (session->hid->claimed & HID_CLAIMED_INPUT) hidinput_disconnect(session->hid); - hid_free_device(session->hid); + hid_destroy_device(session->hid); } /* Wakeup user-space polling for socket errors */ @@ -698,12 +698,13 @@ static void hidp_setup_quirks(struct hid_device *hid) hid->quirks = hidp_blacklist[n].quirks; } -static void hidp_setup_hid(struct hidp_session *session, +static int hidp_setup_hid(struct hidp_session *session, struct hidp_connadd_req *req) { struct hid_device *hid = session->hid; struct hid_report *report; bdaddr_t src, dst; + int ret; baswap(&src, &bt_sk(session->ctrl_sock->sk)->src); baswap(&dst, &bt_sk(session->ctrl_sock->sk)->dst); @@ -721,7 +722,7 @@ static void hidp_setup_hid(struct hidp_session *session, strncpy(hid->phys, batostr(&src), 64); strncpy(hid->uniq, batostr(&dst), 64); - hid->dev = hidp_get_device(session); + hid->dev.parent = hidp_get_device(session); hid->hid_open = hidp_open; hid->hid_close = hidp_close; @@ -738,6 +739,15 @@ static void hidp_setup_hid(struct hidp_session *session, if (hidinput_connect(hid) == 0) hid->claimed |= HID_CLAIMED_INPUT; + + ret = hid_add_device(hid); + if (ret) { + if (hid->claimed & HID_CLAIMED_INPUT) + hidinput_disconnect(hid); + skb_queue_purge(&session->intr_transmit); + } + + return ret; } int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, struct socket *intr_sock) @@ -771,11 +781,19 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, return -EFAULT; } - session->hid = hid_parse_report(buf, req->rd_size); + session->hid = hid_allocate_device(); + if (IS_ERR(session->hid)) { + kfree(buf); + kfree(session); + return PTR_ERR(session->hid); + } + + err = hid_parse_report(session->hid, buf, req->rd_size); kfree(buf); - if (!session->hid) { + if (err) { + hid_destroy_device(session->hid); kfree(session); return -EINVAL; } @@ -822,8 +840,11 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, goto failed; } - if (session->hid) - hidp_setup_hid(session, req); + if (session->hid) { + err = hidp_setup_hid(session, req); + if (err) + goto failed; + } __hidp_link_session(session); @@ -859,7 +880,7 @@ failed: up_write(&hidp_session_sem); if (session->hid) - hid_free_device(session->hid); + hid_destroy_device(session->hid); input_free_device(session->input); kfree(session); @@ -950,18 +971,43 @@ int hidp_get_conninfo(struct hidp_conninfo *ci) return err; } +static const struct hid_device_id hidp_table[] = { + { HID_BLUETOOTH_DEVICE(HID_ANY_ID, HID_ANY_ID) }, + { } +}; + +static struct hid_driver hidp_driver = { + .name = "generic-bluetooth", + .id_table = hidp_table, +}; + static int __init hidp_init(void) { + int ret; + l2cap_load(); BT_INFO("HIDP (Human Interface Emulation) ver %s", VERSION); - return hidp_init_sockets(); + ret = hid_register_driver(&hidp_driver); + if (ret) + goto err; + + ret = hidp_init_sockets(); + if (ret) + goto err_drv; + + return 0; +err_drv: + hid_unregister_driver(&hidp_driver); +err: + return ret; } static void __exit hidp_exit(void) { hidp_cleanup_sockets(); + hid_unregister_driver(&hidp_driver); } module_init(hidp_init); |