/* * HID support for Linux * * Copyright (c) 1999 Andreas Gal * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc * Copyright (c) 2006-2007 Jiri Kosina */ /* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. */ #include <linux/module.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/list.h> #include <linux/mm.h> #include <linux/spinlock.h> #include <asm/unaligned.h> #include <asm/byteorder.h> #include <linux/input.h> #include <linux/wait.h> #include <linux/vmalloc.h> #include <linux/sched.h> #include <linux/hid.h> #include <linux/hiddev.h> #include <linux/hid-debug.h> #include <linux/hidraw.h> #include "hid-ids.h" /* * Version Information */ #define DRIVER_VERSION "v2.6" #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina" #define DRIVER_DESC "HID core driver" #define DRIVER_LICENSE "GPL" #ifdef CONFIG_HID_DEBUG int hid_debug = 0; module_param_named(debug, hid_debug, int, 0600); MODULE_PARM_DESC(debug, "HID debugging (0=off, 1=probing info, 2=continuous data dumping)"); EXPORT_SYMBOL_GPL(hid_debug); #endif /* * Register a new report for a device. */ static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id) { struct hid_report_enum *report_enum = device->report_enum + type; struct hid_report *report; if (report_enum->report_id_hash[id]) return report_enum->report_id_hash[id]; if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL))) return NULL; if (id != 0) report_enum->numbered = 1; report->id = id; report->type = type; report->size = 0; report->device = device; report_enum->report_id_hash[id] = report; list_add_tail(&report->list, &report_enum->report_list); return report; } /* * Register a new field for this report. */ static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values) { struct hid_field *field; if (report->maxfield == HID_MAX_FIELDS) { dbg_hid("too many fields in report\n"); return NULL; } if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage) + values * sizeof(unsigned), GFP_KERNEL))) return NULL; field->index = report->maxfield++; report->field[field->index] = field; field->usage = (struct hid_usage *)(field + 1); field->value = (s32 *)(field->usage + usages); field->report = report; return field; } /* * Open a collection. The type/usage is pushed on the stack. */ static int open_collection(struct hid_parser *parser, unsigned type) { struct hid_collection *collection; unsigned usage; usage = parser->local.usage[0]; if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) { dbg_hid("collection stack overflow\n"); return -1; } if (parser->device->maxcollection == parser->device->collection_size) { collection = kmalloc(sizeof(struct hid_collection) * parser->device->collection_size * 2, GFP_KERNEL); if (collection == NULL) { dbg_hid("failed to reallocate collection array\n"); return -1; } memcpy(collection, parser->device->collection, sizeof(struct hid_collection) * parser->device->collection_size); memset(collection + parser->device->collection_size, 0, sizeof(struct hid_collection) * parser->device->collection_size); kfree(parser->device->collection); parser->device->collection = collection; parser->device->collection_size *= 2; } parser->collection_stack[parser->collection_stack_ptr++] = parser->device->maxcollection; collection = parser->device->collection + parser->device->maxcollection++; collection->type = type; collection->usage = usage; collection->level = parser->collection_stack_ptr - 1; if (type == HID_COLLECTION_APPLICATION) parser->device->maxapplication++; return 0; } /* * Close a collection. */ static int close_collection(struct hid_parser *parser) { if (!parser->collection_stack_ptr) { dbg_hid("collection stack underflow\n"); return -1; } parser->collection_stack_ptr--; return 0; } /* * Climb up the stack, search for the specified collection type * and return the usage. */ static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type) { int n; for (n = parser->collection_stack_ptr - 1; n >= 0; n--) if (parser->device->collection[parser->collection_stack[n]].type == type) return parser->device->collection[parser->collection_stack[n]].usage; return 0; /* we know nothing about this usage type */ } /* * Add a usage to the temporary parser table. */ static int hid_add_usage(struct hid_parser *parser, unsigned usage) { if (parser->local.usage_index >= HID_MAX_USAGES) { dbg_hid("usage index exceeded\n"); return -1; } parser->local.usage[parser->local.usage_index] = usage; parser->local.collection_index[parser->local.usage_index] = parser->collection_stack_ptr ? parser->collection_stack[parser->collection_stack_ptr - 1] : 0; parser->local.usage_index++; return 0; } /* * Register a new field for this report. */ static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags) { struct hid_report *report; struct hid_field *field; int usages; unsigned offset; int i; if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) { dbg_hid("hid_register_report failed\n"); return -1; } if (parser->global.logical_maximum < parser->global.logical_minimum) { dbg_hid("logical range invalid %d %d\n", parser->global.logical_minimum, parser->global.logical_maximum); return -1; } offset = report->size; report->size += parser->global.report_size * parser->global.report_count; if (!parser->local.usage_index) /* Ignore padding fields */ return 0; usages = max_t(int, parser->local.usage_index, parser->global.report_count); if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL) return 0; field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL); field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL); field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION); for (i = 0; i < usages; i++) { int j = i; /* Duplicate the last usage we parsed if we have excess values */ if (i >= parser->local.usage_index) j = parser->local.usage_index - 1; field->usage[i].hid = parser->local.usage[j]; field->usage[i].collection_index = parser->local.collection_index[j]; } field->maxusage = usages; field->flags = flags; field->report_offset = offset; field->report_type = report_type; field->report_size = parser->global.report_size; field->report_count = parser->global.report_count; field->logical_minimum = parser->global.logical_minimum; field->logical_maximum = parser->global.logical_maximum; field->physical_minimum = parser->global.physical_minimum; field->physical_maximum = parser->global.physical_maximum; field->unit_exponent = parser->global.unit_exponent; field->unit = parser->global.unit; return 0; } /* * Read data value from item. */ static u32 item_udata(struct hid_item *item) { switch (item->size) { case 1: return item->data.u8; case 2: return item->data.u16; case 4: return item->data.u32; } return 0; } static s32 item_sdata(struct hid_item *item) { switch (item->size) { case 1: return item->data.s8; case 2: return item->data.s16; case 4: return item->data.s32; } return 0; } /* * Process a global item. */ static int hid_parser_global(struct hid_parser *parser, struct hid_item *item) { switch (item->tag) { case HID_GLOBAL_ITEM_TAG_PUSH: if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) { dbg_hid("global enviroment stack overflow\n"); return -1; } memcpy(parser->global_stack + parser->global_stack_ptr++, &parser->global, sizeof(struct hid_global)); return 0; case HID_GLOBAL_ITEM_TAG_POP: if (!parser->global_stack_ptr) { dbg_hid("global enviroment stack underflow\n"); return -1; } memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr, sizeof(struct hid_global)); return 0; case HID_GLOBAL_ITEM_TAG_USAGE_PAGE: parser->global.usage_page = item_udata(item); return 0; case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM: parser->global.logical_minimum = item_sdata(item); return 0; case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM: if (parser->global.logical_minimum < 0) parser->global.logical_maximum = item_sdata(item); else parser->global.logical_maximum = item_udata(item); return 0; case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM: parser->global.physical_minimum = item_sdata(item); return 0; case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM: if (parser->global.physical_minimum < 0) parser->global.physical_maximum = item_sdata(item); else parser->global.physical_maximum = item_udata(item); return 0; case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT: parser->global.unit_exponent = item_sdata(item); return 0; case HID_GLOBAL_ITEM_TAG_UNIT: parser->global.unit = item_udata(item); return 0; case HID_GLOBAL_ITEM_TAG_REPORT_SIZE: parser->global.report_size = item_udata(item); if (parser->global.report_size > 32) { dbg_hid("invalid report_size %d\n", parser->global.report_size); return -1; } return 0; case HID_GLOBAL_ITEM_TAG_REPORT_COUNT: parser->global.report_count = item_udata(item); if (parser->global.report_count > HID_MAX_USAGES) { dbg_hid("invalid report_count %d\n", parser->global.report_count); return -1; } return 0; case HID_GLOBAL_ITEM_TAG_REPORT_ID: parser->global.report_id = item_udata(item); if (parser->global.report_id == 0) { dbg_hid("report_id 0 is invalid\n"); return -1; } return 0; default: dbg_hid("unknown global tag 0x%x\n", item->tag); return -1; } } /* * Process a local item. */ static int hid_parser_local(struct hid_parser *parser, struct hid_item *item) { __u32 data; unsigned n; if (item->size == 0) { dbg_hid("item data expected for local item\n"); return -1; } data = item_udata(item); switch (item->tag) { case HID_LOCAL_ITEM_TAG_DELIMITER: if (data) { /* * We treat items before the first delimiter * as global to all usage sets (branch 0). * In the moment we process only these global * items and the first delimiter set. */ if (parser->local.delimiter_depth != 0) { dbg_hid("nested delimiters\n"); return -1; } parser->local.delimiter_depth++; parser->local.delimiter_branch++; } else { if (parser->local.delimiter_depth < 1) { dbg_hid("bogus close delimiter\n"); return -1; } parser->local.delimiter_depth--; } return 1; case HID_LOCAL_ITEM_TAG_USAGE: if (parser->local.delimiter_branch > 1) { dbg_hid("alternative usage ignored\n"); return 0; } if (item->size <= 2) data = (parser->global.usage_page << 16) + data; return hid_add_usage(parser, data); case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM: if (parser->local.delimiter_branch > 1) { dbg_hid("alternative usage ignored\n"); return 0; } if (item->size <= 2) data = (parser->global.usage_page << 16) + data; parser->local.usage_minimum = data; return 0; case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM: if (parser->local.delimiter_branch > 1) { dbg_hid("alternative usage ignored\n"); return 0; } if (item->size <= 2) data = (parser->global.usage_page << 16) + data; for (n = parser->local.usage_minimum; n <= data; n++) if (hid_add_usage(parser, n)) { dbg_hid("hid_add_usage failed\n"); return -1; } return 0; default: dbg_hid("unknown local item tag 0x%x\n", item->tag); return 0; } return 0; } /* * Process a main item. */ static int hid_parser_main(struct hid_parser *parser, struct hid_item *item) { __u32 data; int ret; data = item_udata(item); switch (item->tag) { case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION: ret = open_collection(parser, data & 0xff); break; case HID_MAIN_ITEM_TAG_END_COLLECTION: ret = close_collection(parser); break; case HID_MAIN_ITEM_TAG_INPUT: ret = hid_add_field(parser, HID_INPUT_REPORT, data); break; case HID_MAIN_ITEM_TAG_OUTPUT: ret = hid_add_field(parser, HID_OUTPUT_REPORT, data); break; case HID_MAIN_ITEM_TAG_FEATURE: ret = hid_add_field(parser, HID_FEATURE_REPORT, data); break; default: dbg_hid("unknown main item tag 0x%x\n", item->tag); ret = 0; } memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */ return ret; } /* * Process a reserved item. */ static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item) { dbg_hid("reserved item type, tag 0x%x\n", item->tag); return 0; } /* * Free a report and all registered fields. The field->usage and * field->value table's are allocated behind the field, so we need * only to free(field) itself. */ static void hid_free_report(struct hid_report *report) { unsigned n; for (n = 0; n < report->maxfield; n++) kfree(report->field[n]); kfree(report); } /* * Free a device structure, all reports, and all fields. */ static void hid_device_release(struct device *dev) { 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; for (j = 0; j < 256; j++) { struct hid_report *report = report_enum->report_id_hash[j]; if (report) hid_free_report(report); } } kfree(device->rdesc); kfree(device->collection); kfree(device); } /* * Fetch a report description item from the data stream. We support long * items, though they are not used yet. */ static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item) { u8 b; if ((end - start) <= 0) return NULL; b = *start++; item->type = (b >> 2) & 3; item->tag = (b >> 4) & 15; if (item->tag == HID_ITEM_TAG_LONG) { item->format = HID_ITEM_FORMAT_LONG; if ((end - start) < 2) return NULL; item->size = *start++; item->tag = *start++; if ((end - start) < item->size) return NULL; item->data.longdata = start; start += item->size; return start; } item->format = HID_ITEM_FORMAT_SHORT; item->size = b & 3; switch (item->size) { case 0: return start; case 1: if ((end - start) < 1) return NULL; item->data.u8 = *start++; return start; case 2: if ((end - start) < 2) return NULL; item->data.u16 = get_unaligned_le16(start); start = (__u8 *)((__le16 *)start + 1); return start; case 3: item->size++; if ((end - start) < 4) return NULL; item->data.u32 = get_unaligned_le32(start); start = (__u8 *)((__le32 *)start + 1); return start; } 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. */ int hid_parse_report(struct hid_device *device, __u8 *start, unsigned size) { struct hid_parser *parser; struct hid_item item; __u8 *end; int ret; static int (*dispatch_type[])(struct hid_parser *parser, struct hid_item *item) = { hid_parser_main, hid_parser_global, hid_parser_local, hid_parser_reserved }; if (device->driver->report_fixup) device->driver->report_fixup(device, start, size); device->rdesc = kmalloc(size, GFP_KERNEL); if (device->rdesc == NULL) return -ENOMEM; memcpy(device->rdesc, start, size); device->rsize = size; 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"); 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); goto err; } if (start == end) { if (parser->collection_stack_ptr) { dbg_hid("unbalanced collection at end of report description\n"); goto err; } if (parser->local.delimiter_depth) { dbg_hid("unbalanced delimiter at end of report description\n"); goto err; } vfree(parser); return 0; } } dbg_hid("item fetching failed at offset %d\n", (int)(end - start)); err: vfree(parser); return ret; } EXPORT_SYMBOL_GPL(hid_parse_report); /* * Convert a signed n-bit integer to signed 32-bit integer. Common * cases are done through the compiler, the screwed things has to be * done by hand. */ static s32 snto32(__u32 value, unsigned n) { switch (n) { case 8: return ((__s8)value); case 16: return ((__s16)value); case 32: return ((__s32)value); } return value & (1 << (n - 1)) ? value | (-1 << n) : value; } /* * Convert a signed 32-bit integer to a signed n-bit integer. */ static u32 s32ton(__s32 value, unsigned n) { s32 a = value >> (n - 1); if (a && a != -1) return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1; return value & ((1 << n) - 1); } /* * Extract/implement a data field from/to a little endian report (bit array). * * Code sort-of follows HID spec: * http://www.usb.org/developers/devclass_docs/HID1_11.pdf * * While the USB HID spec allows unlimited length bit fields in "report * descriptors", most devices never use more than 16 bits. * One model of UPS is claimed to report "LINEV" as a 32-bit field. * Search linux-kernel and linux-usb-devel archives for "hid-core extract". */ static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n) { u64 x; if (n > 32) printk(KERN_WARNING "HID: extract() called with n (%d) > 32! (%s)\n", n, current->comm); report += offset >> 3; /* adjust byte index */ offset &= 7; /* now only need bit offset into one byte */ x = get_unaligned_le64(report); x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */ return (u32) x; } /* * "implement" : set bits in a little endian bit stream. * Same concepts as "extract" (see comments above). * The data mangled in the bit stream remains in little endian * order the whole time. It make more sense to talk about * endianness of register values by considering a register * a "cached" copy of the little endiad bit stream. */ static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value) { u64 x; u64 m = (1ULL << n) - 1; if (n > 32) printk(KERN_WARNING "HID: implement() called with n (%d) > 32! (%s)\n", n, current->comm); if (value > m) printk(KERN_WARNING "HID: implement() called with too large value %d! (%s)\n", value, current->comm); WARN_ON(value > m); value &= m; report += offset >> 3; offset &= 7; x = get_unaligned_le64(report); x &= ~(m << offset); x |= ((u64)value) << offset; put_unaligned_le64(x, report); } /* * Search an array for a value. */ static __inline__ int search(__s32 *array, __s32 value, unsigned n) { while (n--) { if (*array++ == value) return 0; } return -1; } /** * 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) hid->hiddev_hid_event(hid, field, usage, value); } /* * Analyse a received field, and fetch the data from it. The field * content is stored for next report processing (we do differential * reporting to the layer). */ static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt) { unsigned n; unsigned count = field->report_count; unsigned offset = field->report_offset; unsigned size = field->report_size; __s32 min = field->logical_minimum; __s32 max = field->logical_maximum; __s32 *value; if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC))) return; for (n = 0; n < count; n++) { value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) : extract(data, offset + n * size, size); if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */ && value[n] >= min && value[n] <= max && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1) goto exit; } for (n = 0; n < count; n++) { if (HID_MAIN_ITEM_VARIABLE & field->flags) { hid_process_event(hid, field, &field->usage[n], value[n], interrupt); continue; } if (field->value[n] >= min && field->value[n] <= max && field->usage[field->value[n] - min].hid && search(value, field->value[n], count)) hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt); if (value[n] >= min && value[n] <= max && field->usage[value[n] - min].hid && search(field->value, value[n], count)) hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt); } memcpy(field->value, value, count * sizeof(__s32)); exit: kfree(value); } /* * Output the field into the report. */ static void hid_output_field(struct hid_field *field, __u8 *data) { unsigned count = field->report_count; unsigned offset = field->report_offset; unsigned size = field->report_size; unsigned bitsused = offset + count * size; unsigned n; /* make sure the unused bits in the last byte are zeros */ if (count > 0 && size > 0 && (bitsused % 8) != 0) data[(bitsused-1)/8] &= (1 << (bitsused % 8)) - 1; for (n = 0; n < count; n++) { if (field->logical_minimum < 0) /* signed values */ implement(data, offset + n * size, size, s32ton(field->value[n], size)); else /* unsigned values */ implement(data, offset + n * size, size, field->value[n]); } } /* * Create a report. */ void hid_output_report(struct hid_report *report, __u8 *data) { unsigned n; if (report->id > 0) *data++ = report->id; 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 * created and transferred to the device, to set this value in the * device. */ int hid_set_field(struct hid_field *field, unsigned offset, __s32 value) { unsigned size = field->report_size; hid_dump_input(field->usage + offset, value); if (offset >= field->report_count) { dbg_hid("offset (%d) exceeds report_count (%d)\n", offset, field->report_count); hid_dump_field(field, 8); return -1; } if (field->logical_minimum < 0) { if (value != snto32(s32ton(value, size), size)) { dbg_hid("value %d is out of range\n", value); return -1; } } field->value[offset] = value; return 0; } EXPORT_SYMBOL_GPL(hid_set_field); static struct hid_report *hid_get_report(struct hid_report_enum *report_enum, const u8 *data) { struct hid_report *report; unsigned int n = 0; /* Normally report number is 0 */ /* Device uses numbered reports, data[0] is report number */ if (report_enum->numbered) n = *data; report = report_enum->report_id_hash[n]; if (report == NULL) dbg_hid("undefined report_id %u received\n", n); return report; } 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; report = hid_get_report(report_enum, data); if (!report) return; if (report_enum->numbered) { cdata++; csize--; } rsize = ((report->size - 1) >> 3) + 1; 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) hid->hiddev_report_event(hid, report); if (hid->claimed & HID_CLAIMED_HIDRAW) { /* numbered reports need to be passed with the report num */ if (report_enum->numbered) hidraw_report_event(hid, data - 1, size + 1); else hidraw_report_event(hid, data, size); } 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; struct hid_driver *hdrv; struct hid_report *report; unsigned int i; int ret; if (!hid || !hid->driver) return -ENODEV; report_enum = hid->report_enum + type; hdrv = hid->driver; 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_hiddev_list[] = { { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) }, { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) }, { } }; static bool hid_hiddev(struct hid_device *hdev) { return !!hid_match_id(hdev, hid_hiddev_list); } int hid_connect(struct hid_device *hdev, unsigned int connect_mask) { static const char *types[] = { "Device", "Pointer", "Mouse", "Device", "Joystick", "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller" }; const char *type, *bus; char buf[64]; unsigned int i; int len; if (hdev->bus != BUS_USB) connect_mask &= ~HID_CONNECT_HIDDEV; if (hid_hiddev(hdev)) connect_mask |= HID_CONNECT_HIDDEV_FORCE; if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev, connect_mask & HID_CONNECT_HIDINPUT_FORCE)) hdev->claimed |= HID_CLAIMED_INPUT; if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect && !hdev->hiddev_connect(hdev, connect_mask & HID_CONNECT_HIDDEV_FORCE)) hdev->claimed |= HID_CLAIMED_HIDDEV; if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev)) hdev->claimed |= HID_CLAIMED_HIDRAW; if (!hdev->claimed) { dev_err(&hdev->dev, "claimed by neither input, hiddev nor " "hidraw\n"); return -ENODEV; } if ((hdev->claimed & HID_CLAIMED_INPUT) && (connect_mask & HID_CONNECT_FF) && hdev->ff_init) hdev->ff_init(hdev); len = 0; if (hdev->claimed & HID_CLAIMED_INPUT) len += sprintf(buf + len, "input"); if (hdev->claimed & HID_CLAIMED_HIDDEV) len += sprintf(buf + len, "%shiddev%d", len ? "," : "", hdev->minor); if (hdev->claimed & HID_CLAIMED_HIDRAW) len += sprintf(buf + len, "%shidraw%d", len ? "," : "", ((struct hidraw *)hdev->hidraw)->minor); type = "Device"; for (i = 0; i < hdev->maxcollection; i++) { struct hid_collection *col = &hdev->collection[i]; if (col->type == HID_COLLECTION_APPLICATION && (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK && (col->usage & 0xffff) < ARRAY_SIZE(types)) { type = types[col->usage & 0xffff]; break; } } switch (hdev->bus) { case BUS_USB: bus = "USB"; break; case BUS_BLUETOOTH: bus = "BLUETOOTH"; break; default: bus = "<UNKNOWN>"; } dev_info(&hdev->dev, "%s: %s HID v%x.%02x %s [%s] on %s\n", buf, bus, hdev->version >> 8, hdev->version & 0xff, type, hdev->name, hdev->phys); return 0; } EXPORT_SYMBOL_GPL(hid_connect); /* a list of devices for which there is a specialized driver on HID bus */ static const struct hid_device_id hid_blacklist[] = { { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) }, { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) }, { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) }, { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) }, { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) }, { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) }, { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) }, { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) }, { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) }, { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) }, { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) }, { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) }, { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) }, { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) }, { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) }, { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) }, { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) }, { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) }, { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) }, { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) }, { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) }, { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) }, { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) }, { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) }, { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) }, { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) }, { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) }, { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) }, { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, 0x030c) }, { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) }, { } }; struct hid_dynid { struct list_head list; struct hid_device_id id; }; /** * store_new_id - add a new HID device ID to this driver and re-probe devices * @driver: target device driver * @buf: buffer for scanning device ID data * @count: input size * * Adds a new dynamic hid device ID to this driver, * and causes the driver to probe for all devices again. */ static ssize_t store_new_id(struct device_driver *drv, const char *buf, size_t count) { struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver); struct hid_dynid *dynid; __u32 bus, vendor, product; unsigned long driver_data = 0; int ret; ret = sscanf(buf, "%x %x %x %lx", &bus, &vendor, &product, &driver_data); if (ret < 3) return -EINVAL; dynid = kzalloc(sizeof(*dynid), GFP_KERNEL); if (!dynid) return -ENOMEM; dynid->id.bus = bus; dynid->id.vendor = vendor; dynid->id.product = product; dynid->id.driver_data = driver_data; spin_lock(&hdrv->dyn_lock); list_add_tail(&dynid->list, &hdrv->dyn_list); spin_unlock(&hdrv->dyn_lock); ret = 0; if (get_driver(&hdrv->driver)) { ret = driver_attach(&hdrv->driver); put_driver(&hdrv->driver); } return ret ? : count; } static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id); static void hid_free_dynids(struct hid_driver *hdrv) { struct hid_dynid *dynid, *n; spin_lock(&hdrv->dyn_lock); list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) { list_del(&dynid->list); kfree(dynid); } spin_unlock(&hdrv->dyn_lock); } static const struct hid_device_id *hid_match_device(struct hid_device *hdev, struct hid_driver *hdrv) { struct hid_dynid *dynid; spin_lock(&hdrv->dyn_lock); list_for_each_entry(dynid, &hdrv->dyn_list, list) { if (hid_match_one_id(hdev, &dynid->id)) { spin_unlock(&hdrv->dyn_lock); return &dynid->id; } } spin_unlock(&hdrv->dyn_lock); return hid_match_id(hdev, hdrv->id_table); } 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_device(hdev, hdrv)) 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) { id = hid_match_device(hdev, hdrv); if (id == NULL) return -ENODEV; hdev->driver = hdrv; if (hdrv->probe) { ret = hdrv->probe(hdev, id); } else { /* default probe */ ret = hid_parse(hdev); if (!ret) ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); } if (ret) hdev->driver = NULL; } 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); else /* default remove */ hid_hw_stop(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, }; /* a list of devices that shouldn't be handled by HID core at all */ static const struct hid_device_id hid_ignore_list[] = { { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) }, { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) }, { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) }, { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) }, { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) }, { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) }, { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) }, { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) }, { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) }, { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) }, { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) }, { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) }, { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM)}, { HID_USB_DEVICE(USB_VENDOR_ID_ASUS, USB_DEVICE_ID_ASUS_LCM2)}, { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) }, { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) }, { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) }, { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) }, { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) }, { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) }, { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) }, { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) }, { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) }, { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) }, { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0003) }, { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) }, { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) }, { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) }, { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) }, { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) }, { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) }, { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) }, { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) }, { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) }, { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) }, { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) }, { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) }, { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) }, { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) }, { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) }, { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) }, { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) }, { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) }, { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) }, { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY1) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) }, { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) }, { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) }, { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) }, { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) }, { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) }, { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) }, { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) }, { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) }, { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) }, { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) }, { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) }, { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD) }, { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD2) }, { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD3) }, { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD4) }, { HID_USB_DEVICE(USB_VENDOR_ID_SOUNDGRAPH, USB_DEVICE_ID_SOUNDGRAPH_IMON_LCD5) }, { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY1) }, { HID_USB_DEVICE(USB_VENDOR_ID_TENX, USB_DEVICE_ID_TENX_IBUDDY2) }, { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) }, { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) }, { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) }, { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) }, { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) }, { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) }, { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) }, { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) }, { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) }, { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) }, { } }; /** * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer * * There are composite devices for which we want to ignore only a certain * interface. This is a list of devices for which only the mouse interface will * be ignored. This allows a dedicated driver to take care of the interface. */ static const struct hid_device_id hid_mouse_ignore_list[] = { /* appletouch driver */ { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) }, { } }; static bool hid_ignore(struct hid_device *hdev) { switch (hdev->vendor) { case USB_VENDOR_ID_CODEMERCS: /* ignore all Code Mercenaries IOWarrior devices */ if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST && hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST) return true; break; case USB_VENDOR_ID_LOGITECH: if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST && hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST) return true; break; } if (hdev->type == HID_TYPE_USBMOUSE && hid_match_id(hdev, hid_mouse_ignore_list)) return true; return !!hid_match_id(hdev, hid_ignore_list); } 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; /* we need to kill them here, otherwise they will stay allocated to * wait for coming driver */ if (hid_ignore(hdev)) return -ENODEV; /* XXX hack, any other cleaner solution after the driver core * is converted to allow more than 20 bytes as the device name? */ dev_set_name(&hdev->dev, "%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) { int ret; hdrv->driver.name = hdrv->name; hdrv->driver.bus = &hid_bus_type; hdrv->driver.owner = owner; hdrv->driver.mod_name = mod_name; INIT_LIST_HEAD(&hdrv->dyn_list); spin_lock_init(&hdrv->dyn_lock); ret = driver_register(&hdrv->driver); if (ret) return ret; ret = driver_create_file(&hdrv->driver, &driver_attr_new_id); if (ret) driver_unregister(&hdrv->driver); return ret; } EXPORT_SYMBOL_GPL(__hid_register_driver); void hid_unregister_driver(struct hid_driver *hdrv) { driver_remove_file(&hdrv->driver, &driver_attr_new_id); driver_unregister(&hdrv->driver); hid_free_dynids(hdrv); } EXPORT_SYMBOL_GPL(hid_unregister_driver); int hid_check_keys_pressed(struct hid_device *hid) { struct hid_input *hidinput; int i; if (!(hid->claimed & HID_CLAIMED_INPUT)) return 0; list_for_each_entry(hidinput, &hid->inputs, list) { for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++) if (hidinput->input->key[i]) return 1; } return 0; } EXPORT_SYMBOL_GPL(hid_check_keys_pressed); static int __init hid_init(void) { 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); module_exit(hid_exit); MODULE_LICENSE(DRIVER_LICENSE);