patch-2.2.18 linux/drivers/usb/hid.c
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- Lines: 1549
- Date:
Sat Sep 23 13:21:35 2000
- Orig file:
v2.2.17/drivers/usb/hid.c
- Orig date:
Thu Jan 1 01:00:00 1970
diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/usb/hid.c linux/drivers/usb/hid.c
@@ -0,0 +1,1548 @@
+/*
+ * $Id: hid.c,v 1.16 2000/09/18 21:38:55 vojtech Exp $
+ *
+ * Copyright (c) 1999 Andreas Gal
+ * Copyright (c) 2000 Vojtech Pavlik
+ *
+ * USB HID support for the Linux input drivers
+ *
+ * Sponsored by SuSE
+ */
+
+/*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
+ * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/module.h>
+#include <linux/malloc.h>
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/smp_lock.h>
+#include <linux/spinlock.h>
+#undef DEBUG
+#undef DEBUG_DATA
+#include <linux/usb.h>
+
+#include <asm/unaligned.h>
+
+#include "hid.h"
+
+#ifdef DEBUG
+#include "hid-debug.h"
+#else
+#define hid_dump_input(a,b) do { } while (0)
+#define hid_dump_device(c) do { } while (0)
+#endif
+
+#define unk KEY_UNKNOWN
+
+static unsigned char hid_keyboard[256] = {
+ 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
+ 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
+ 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
+ 27, 43, 84, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
+ 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
+ 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
+ 72, 73, 82, 83, 86,127,116,117, 85, 89, 90, 91, 92, 93, 94, 95,
+ 120,121,122,123,134,138,130,132,128,129,131,137,133,135,136,113,
+ 115,114,unk,unk,unk,124,unk,181,182,183,184,185,186,187,188,189,
+ 190,191,192,193,194,195,196,197,198,unk,unk,unk,unk,unk,unk,unk,
+ unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
+ unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
+ unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
+ unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
+ 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
+ 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
+};
+
+static struct {
+ __s32 x;
+ __s32 y;
+} hid_hat_to_axis[] = {{ 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}, { 0, 0}};
+
+static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
+ "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
+
+/*
+ * 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 = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
+ return NULL;
+ memset(report, 0, sizeof(struct hid_report));
+
+ 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)
+{
+ if (report->maxfield < HID_MAX_FIELDS) {
+ struct hid_field *field;
+
+ if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
+ + values * sizeof(unsigned), GFP_KERNEL)))
+ return NULL;
+ memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
+ + values * sizeof(unsigned));
+
+ report->field[report->maxfield++] = field;
+ field->usage = (struct hid_usage *)(field + 1);
+ field->value = (unsigned *)(field->usage + usages);
+ field->report = report;
+
+ return field;
+ }
+
+ dbg("too many fields in report");
+ return NULL;
+}
+
+/*
+ * Open a collection. The type/usage is pushed on the stack.
+ */
+
+static int open_collection(struct hid_parser *parser, unsigned type)
+{
+ unsigned usage;
+
+ usage = parser->local.usage[0];
+
+ if (type == HID_COLLECTION_APPLICATION && !parser->device->application)
+ parser->device->application = usage;
+
+ if (parser->collection_stack_ptr < HID_COLLECTION_STACK_SIZE) { /* PUSH on stack */
+ struct hid_collection *collection = parser->collection_stack + parser->collection_stack_ptr++;
+ collection->type = type;
+ collection->usage = usage;
+ return 0;
+ }
+
+ dbg("collection stack overflow");
+ return -1;
+}
+
+/*
+ * Close a collection.
+ */
+
+static int close_collection(struct hid_parser *parser)
+{
+ if (parser->collection_stack_ptr > 0) { /* POP from stack */
+ parser->collection_stack_ptr--;
+ return 0;
+ }
+ dbg("collection stack underflow");
+ return -1;
+}
+
+/*
+ * 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->collection_stack[n].type == type)
+ return 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("usage index exceeded");
+ return -1;
+ }
+ parser->local.usage[parser->local.usage_index++] = usage;
+ 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_register_report failed");
+ return -1;
+ }
+
+ if (HID_MAIN_ITEM_VARIABLE & ~flags) { /* ARRAY */
+ if (parser->global.logical_maximum <= parser->global.logical_minimum) {
+ dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
+ return -1;
+ }
+ usages = parser->local.usage_index;
+ /* Hint: we can assume usages < MAX_USAGE here */
+ } else { /* VARIABLE */
+ usages = parser->global.report_count;
+ }
+ offset = report->size;
+ report->size += parser->global.report_size *
+ parser->global.report_count;
+ if (usages == 0)
+ return 0; /* ignore padding fields */
+ 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);
+ for (i = 0; i < usages; i++) field->usage[i].hid = parser->local.usage[i];
+ 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 __inline__ __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 __inline__ __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) {
+ memcpy(parser->global_stack + parser->global_stack_ptr++,
+ &parser->global, sizeof(struct hid_global));
+ return 0;
+ }
+ dbg("global enviroment stack overflow");
+ return -1;
+
+ case HID_GLOBAL_ITEM_TAG_POP:
+
+ if (parser->global_stack_ptr > 0) {
+ memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
+ sizeof(struct hid_global));
+ return 0;
+ }
+ dbg("global enviroment stack underflow");
+ return -1;
+
+ 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:
+ parser->global.logical_maximum = item_sdata(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:
+ parser->global.physical_maximum = item_sdata(item);
+ return 0;
+
+ case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
+ parser->global.unit_exponent = item_udata(item);
+ return 0;
+
+ case HID_GLOBAL_ITEM_TAG_UNIT:
+ parser->global.unit = item_udata(item);
+ return 0;
+
+ case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
+ if ((parser->global.report_size = item_udata(item)) > 32) {
+ dbg("invalid report_size %d", parser->global.report_size);
+ return -1;
+ }
+ return 0;
+
+ case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
+ if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
+ dbg("invalid report_count %d", parser->global.report_count);
+ return -1;
+ }
+ return 0;
+
+ case HID_GLOBAL_ITEM_TAG_REPORT_ID:
+ if ((parser->global.report_id = item_udata(item)) == 0) {
+ dbg("report_id 0 is invalid");
+ return -1;
+ }
+ return 0;
+
+ default:
+ dbg("unknown global tag 0x%x", item->tag);
+ return -1;
+ }
+}
+
+/*
+ * Process a local item.
+ */
+
+static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
+{
+ __u32 data;
+
+ if (item->size == 0) {
+ dbg("item data expected for local item");
+ 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("nested delimiters");
+ return -1;
+ }
+ parser->local.delimiter_depth++;
+ parser->local.delimiter_branch++;
+ } else {
+ if (parser->local.delimiter_depth < 1) {
+ dbg("bogus close delimiter");
+ return -1;
+ }
+ parser->local.delimiter_depth--;
+ }
+ return 1;
+
+ case HID_LOCAL_ITEM_TAG_USAGE:
+
+ if (parser->local.delimiter_branch < 2) {
+ if (item->size <= 2)
+ data = (parser->global.usage_page << 16) + data;
+ return hid_add_usage(parser, data);
+ }
+ dbg("alternative usage ignored");
+ return 0;
+
+ case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
+
+ if (parser->local.delimiter_branch < 2) {
+ if (item->size <= 2)
+ data = (parser->global.usage_page << 16) + data;
+ parser->local.usage_minimum = data;
+ return 0;
+ }
+ dbg("alternative usage ignored");
+ return 0;
+
+ case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
+
+ if (parser->local.delimiter_branch < 2) {
+ unsigned n;
+ 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_add_usage failed\n");
+ return -1;
+ }
+ return 0;
+ }
+ dbg("alternative usage ignored");
+ return 0;
+
+ default:
+
+ dbg("unknown local item tag 0x%x", item->tag);
+ 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 & 3);
+ 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("unknown main item tag 0x%x", 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("reserved item type, tag 0x%x", 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_free_device(struct hid_device *device)
+{
+ 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);
+ }
+ }
+
+ if (device->rdesc) kfree(device->rdesc);
+}
+
+/*
+ * 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)
+{
+ if ((end - start) > 0) {
+
+ __u8 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) {
+
+ item->size = *start++;
+ item->tag = *start++;
+
+ if ((end - start) >= item->size) {
+ item->data.longdata = start;
+ start += item->size;
+ return start;
+ }
+ }
+ } else {
+
+ item->format = HID_ITEM_FORMAT_SHORT;
+ item->size = b & 3;
+ switch (item->size) {
+
+ case 0:
+ return start;
+
+ case 1:
+ if ((end - start) >= 1) {
+ item->data.u8 = *start++;
+ return start;
+ }
+ break;
+
+ case 2:
+ if ((end - start) >= 2) {
+ item->data.u16 = le16_to_cpu( get_unaligned(((__u16*)start)++));
+ return start;
+ }
+
+ case 3:
+ item->size++;
+ if ((end - start) >= 4) {
+ item->data.u32 = le32_to_cpu( get_unaligned(((__u32*)start)++));
+ return start;
+ }
+ }
+ }
+ }
+ return NULL;
+}
+
+/*
+ * Parse a report description into a hid_device structure. Reports are
+ * enumerated, fields are attached to these reports.
+ */
+
+static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
+{
+ struct hid_device *device;
+ struct hid_parser *parser;
+ struct hid_item item;
+ __u8 *end;
+ unsigned i;
+ 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 = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
+ return NULL;
+ memset(device, 0, sizeof(struct hid_device));
+
+ for (i = 0; i < HID_REPORT_TYPES; i++)
+ INIT_LIST_HEAD(&device->report_enum[i].report_list);
+
+ if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
+ kfree(device);
+ return NULL;
+ }
+ memcpy(device->rdesc, start, size);
+
+ if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
+ kfree(device->rdesc);
+ kfree(device);
+ return NULL;
+ }
+ memset(parser, 0, sizeof(struct hid_parser));
+ parser->device = device;
+
+ end = start + size;
+ while ((start = fetch_item(start, end, &item)) != 0) {
+ if (item.format != HID_ITEM_FORMAT_SHORT) {
+ dbg("unexpected long global item");
+ hid_free_device(device);
+ kfree(parser);
+ return NULL;
+ }
+ if (dispatch_type[item.type](parser, &item)) {
+ dbg("item %u %u %u %u parsing failed\n",
+ item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
+ hid_free_device(device);
+ kfree(parser);
+ return NULL;
+ }
+
+ if (start == end) {
+ if (parser->collection_stack_ptr) {
+ dbg("unbalanced collection at end of report description");
+ hid_free_device(device);
+ kfree(parser);
+ return NULL;
+ }
+ if (parser->local.delimiter_depth) {
+ dbg("unbalanced delimiter at end of report description");
+ hid_free_device(device);
+ kfree(parser);
+ return NULL;
+ }
+ kfree(parser);
+ return device;
+ }
+ }
+
+ dbg("item fetching failed at offset %d\n", (int)(end - start));
+ hid_free_device(device);
+ kfree(parser);
+ return NULL;
+}
+
+/*
+ * 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 __inline__ __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 __inline__ __u32 s32ton(__s32 value, unsigned n)
+{
+ __s32 a = value >> (n - 1);
+ if (a && a != -1) return value > 0 ? 1 << (n - 1) : (1 << n) - 1;
+ return value & ((1 << n) - 1);
+}
+
+/*
+ * Extract/implement a data field from/to a report. We use 64-bit unsigned,
+ * 32-bit aligned, so that we can possibly have alignment problems on some
+ * odd architectures.
+ */
+
+static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
+{
+ report += (offset >> 5) << 2; offset &= 31;
+ return (le64_to_cpu(get_unaligned((__u64*)report)) >> offset) & ((1 << n) - 1);
+}
+
+static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
+{
+ report += (offset >> 5) << 2; offset &= 31;
+ *(__u64*)report &= cpu_to_le64(~((((__u64) 1 << n) - 1) << offset));
+ *(__u64*)report |= cpu_to_le64((__u64)value << offset);
+}
+
+static void hid_configure_usage(struct hid_device *device, struct hid_field *field, struct hid_usage *usage)
+{
+ struct input_dev *input = &device->input;
+ int max;
+ unsigned long *bit;
+
+ switch (usage->hid & HID_USAGE_PAGE) {
+
+ case HID_UP_KEYBOARD:
+
+ set_bit(EV_REP, input->evbit);
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+
+ if ((usage->hid & HID_USAGE) < 256) {
+ if (!(usage->code = hid_keyboard[usage->hid & HID_USAGE]))
+ return;
+ clear_bit(usage->code, bit);
+ } else
+ usage->code = KEY_UNKNOWN;
+
+ break;
+
+ case HID_UP_BUTTON:
+
+ usage->code = ((usage->hid - 1) & 0xf) + 0x100;
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+
+ switch (device->application) {
+ case HID_GD_GAMEPAD: usage->code += 0x10;
+ case HID_GD_JOYSTICK: usage->code += 0x10;
+ case HID_GD_MOUSE: usage->code += 0x10; break;
+ default:
+ if (field->physical == HID_GD_POINTER)
+ usage->code += 0x10;
+ break;
+ }
+ break;
+
+ case HID_UP_GENDESK:
+
+ if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
+ switch (usage->hid & 0xf) {
+ case 0x1: usage->code = KEY_POWER; break;
+ case 0x2: usage->code = KEY_SLEEP; break;
+ case 0x3: usage->code = KEY_WAKEUP; break;
+ default: usage->code = KEY_UNKNOWN; break;
+ }
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+ break;
+ }
+
+ usage->code = usage->hid & 0xf;
+
+ if (field->report_size == 1) {
+ usage->code = BTN_MISC;
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+ break;
+ }
+
+ if (field->flags & HID_MAIN_ITEM_RELATIVE) {
+ usage->type = EV_REL; bit = input->relbit; max = REL_MAX;
+ break;
+ }
+
+ usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
+
+ if (usage->hid == HID_GD_HATSWITCH) {
+ usage->code = ABS_HAT0X;
+ usage->hat = 1 + (field->logical_maximum == 4);
+ }
+ break;
+
+ case HID_UP_LED:
+
+ usage->code = (usage->hid - 1) & 0xf;
+ usage->type = EV_LED; bit = input->ledbit; max = LED_MAX;
+ break;
+
+ case HID_UP_DIGITIZER:
+
+ switch (usage->hid & 0xff) {
+
+ case 0x30: /* TipPressure */
+
+ if (!test_bit(BTN_TOUCH, input->keybit)) {
+ device->quirks |= HID_QUIRK_NOTOUCH;
+ set_bit(EV_KEY, input->evbit);
+ set_bit(BTN_TOUCH, input->keybit);
+ }
+ usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
+ usage->code = ABS_PRESSURE;
+ clear_bit(usage->code, bit);
+ break;
+
+ case 0x32: /* InRange */
+
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+ switch (field->physical & 0xff) {
+ case 0x21: usage->code = BTN_TOOL_MOUSE; break;
+ case 0x22: usage->code = BTN_TOOL_FINGER; break;
+ default: usage->code = BTN_TOOL_PEN; break;
+ }
+ break;
+
+ case 0x3c: /* Invert */
+
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+ usage->code = BTN_TOOL_RUBBER;
+ clear_bit(usage->code, bit);
+ break;
+
+ case 0x33: /* Touch */
+ case 0x42: /* TipSwitch */
+ case 0x43: /* TipSwitch2 */
+
+ device->quirks &= ~HID_QUIRK_NOTOUCH;
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+ usage->code = BTN_TOUCH;
+ clear_bit(usage->code, bit);
+ break;
+
+ case 0x44: /* BarrelSwitch */
+
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+ usage->code = BTN_STYLUS;
+ clear_bit(usage->code, bit);
+ break;
+
+ default: goto unknown;
+ }
+ break;
+
+ case HID_UP_CONSUMER: /* USB HUT v1.1, pages 56-62 */
+
+ switch (usage->hid & HID_USAGE) {
+
+ case 0x034: usage->code = KEY_SLEEP; break;
+ case 0x036: usage->code = BTN_MISC; break;
+ case 0x08a: usage->code = KEY_WWW; break;
+ case 0x095: usage->code = KEY_HELP; break;
+
+ case 0x0b4: usage->code = KEY_REWIND; break;
+ case 0x0b5: usage->code = KEY_NEXTSONG; break;
+ case 0x0b6: usage->code = KEY_PREVIOUSSONG; break;
+ case 0x0b7: usage->code = KEY_STOPCD; break;
+ case 0x0b8: usage->code = KEY_EJECTCD; break;
+ case 0x0cd: usage->code = KEY_PLAYPAUSE; break;
+
+ case 0x0e2: usage->code = KEY_MUTE; break;
+ case 0x0e9: usage->code = KEY_VOLUMEUP; break;
+ case 0x0ea: usage->code = KEY_VOLUMEDOWN; break;
+
+ case 0x183: usage->code = KEY_CONFIG; break;
+ case 0x18a: usage->code = KEY_MAIL; break;
+ case 0x192: usage->code = KEY_CALC; break;
+ case 0x194: usage->code = KEY_FILE; break;
+
+ case 0x21a: usage->code = KEY_UNDO; break;
+ case 0x21b: usage->code = KEY_COPY; break;
+ case 0x21c: usage->code = KEY_CUT; break;
+ case 0x21d: usage->code = KEY_PASTE; break;
+
+ case 0x221: usage->code = KEY_FIND; break;
+ case 0x223: usage->code = KEY_HOMEPAGE; break;
+ case 0x224: usage->code = KEY_BACK; break;
+ case 0x225: usage->code = KEY_FORWARD; break;
+ case 0x226: usage->code = KEY_STOP; break;
+ case 0x227: usage->code = KEY_REFRESH; break;
+ case 0x22a: usage->code = KEY_BOOKMARKS; break;
+
+ default: usage->code = KEY_UNKNOWN; break;
+
+ }
+
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+ break;
+
+ default:
+ unknown:
+
+ if (field->report_size == 1) {
+ usage->code = BTN_MISC;
+ usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX;
+ break;
+ }
+
+ if (field->flags & HID_MAIN_ITEM_RELATIVE) {
+ usage->code = REL_MISC;
+ usage->type = EV_REL; bit = input->relbit; max = REL_MAX;
+ break;
+ }
+
+ usage->code = ABS_MISC;
+ usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX;
+ break;
+ }
+
+ set_bit(usage->type, input->evbit);
+
+ while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
+ usage->code = find_next_zero_bit(bit, max + 1, usage->code);
+ }
+
+ if (usage->code > max) return;
+
+ if (usage->type == EV_ABS) {
+ int a = field->logical_minimum;
+ int b = field->logical_maximum;
+
+ input->absmin[usage->code] = a;
+ input->absmax[usage->code] = b;
+ input->absfuzz[usage->code] = (b - a) >> 8;
+ input->absflat[usage->code] = (b - a) >> 4;
+ }
+
+ if (usage->hat) {
+ int i;
+ for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
+ input->absmax[i] = 1;
+ input->absmin[i] = -1;
+ input->absfuzz[i] = 0;
+ input->absflat[i] = 0;
+ }
+ set_bit(usage->code + 1, input->absbit);
+ }
+}
+
+static void hid_process_event(struct input_dev *input, int *quirks, struct hid_field *field, struct hid_usage *usage, __s32 value)
+{
+ hid_dump_input(usage, value);
+
+ if (usage->hat) {
+ if (usage->hat == 2) value = value * 2;
+ if (value > 8) value = 8;
+ input_event(input, usage->type, usage->code , hid_hat_to_axis[value].x);
+ input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[value].y);
+ return;
+ }
+
+ if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
+ *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
+ return;
+ }
+
+ if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
+ if (value) {
+ input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
+ return;
+ }
+ input_event(input, usage->type, usage->code, 0);
+ input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
+ return;
+ }
+
+ if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
+ int a = field->logical_minimum;
+ int b = field->logical_maximum;
+ input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
+ }
+
+ input_event(input, usage->type, usage->code, value);
+
+ if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
+ input_event(input, usage->type, usage->code, 0);
+}
+
+/*
+ * 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;
+}
+
+/*
+ * 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 *dev, struct hid_field *field, __u8 *data)
+{
+ 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[count]; /* WARNING: gcc specific */
+
+ for (n = 0; n < count; n++)
+ value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
+ extract(data, offset + n * size, size);
+
+ for (n = 0; n < count; n++) {
+
+ if (HID_MAIN_ITEM_VARIABLE & field->flags) {
+
+ if (field->flags & HID_MAIN_ITEM_RELATIVE) {
+ if (!value[n]) continue;
+ } else {
+ if (value[n] == field->value[n]) continue;
+ }
+ hid_process_event(&dev->input, &dev->quirks, field, &field->usage[n], value[n]);
+
+ } else {
+
+ if (field->value[n] >= min && field->value[n] <= max /* non-NULL value */
+ && field->usage[field->value[n] - min].hid /* nonzero usage */
+ && search(value, field->value[n], count))
+ hid_process_event(&dev->input, &dev->quirks, field,
+ &field->usage[field->value[n] - min], 0);
+
+ if (value[n] >= min && value[n] <= max /* non-NULL value */
+ && field->usage[value[n] - min].hid /* nonzero usage */
+ && search(field->value, value[n], count))
+ hid_process_event(&dev->input, &dev->quirks,
+ field, &field->usage[value[n] - min], 1);
+ }
+ }
+
+ memcpy(field->value, value, count * sizeof(__s32));
+}
+
+/*
+ * Interrupt input handler - analyse a received report.
+ */
+
+static void hid_irq(struct urb *urb)
+{
+ struct hid_device *device = urb->context;
+ struct hid_report_enum *report_enum = device->report_enum + HID_INPUT_REPORT;
+ struct hid_report *report;
+ __u8 *data = urb->transfer_buffer;
+ int len = urb->actual_length;
+ int n;
+
+ if (urb->status) {
+ dbg("nonzero status in irq %d", urb->status);
+ return;
+ }
+
+ if (!len) {
+ dbg("empty report");
+ return;
+ }
+
+#ifdef DEBUG_DATA
+ printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered) = ", len, report_enum->numbered ? "" : "un");
+ for (n = 0; n < len; n++)
+ printk(" %02x", data[n]);
+ printk("\n");
+#endif
+
+ n = 0; /* Normally report number is 0 */
+
+ if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */
+ n = *data++;
+ len--;
+ }
+
+ if (!(report = report_enum->report_id_hash[n])) {
+ dbg("undefined report_id %d received", n);
+#ifdef DEBUG
+ printk(KERN_DEBUG __FILE__ ": report (size %u) = ", len);
+ for (n = 0; n < len; n++)
+ printk(" %02x", data[n]);
+ printk("\n");
+#endif
+
+ return;
+ }
+
+ if (len < ((report->size - 1) >> 3) + 1) {
+ dbg("report %d is too short, (%d < %d)", report->id, len, ((report->size - 1) >> 3) + 1);
+ return;
+ }
+
+ for (n = 0; n < report->maxfield; n++)
+ hid_input_field(device, report->field[n], data);
+
+ return;
+}
+
+/*
+ * hid_read_report() s intended to read the hid devices values even
+ * before the input device is registered, so that the userland interface
+ * modules start with real values. This is especially important for joydev.c
+ * automagic calibration. Doesn't work yet, though. Don't know why, the control
+ * request just times out on most devices I have and returns nonsense on others.
+ */
+
+static void hid_read_report(struct hid_device *hid, struct hid_report *report)
+{
+#if 0
+ int rlen = ((report->size - 1) >> 3) + 1;
+ char rdata[rlen];
+ struct urb urb;
+ int read, j;
+
+ memset(&urb, 0, sizeof(struct urb));
+ memset(rdata, 0, rlen);
+
+ urb.transfer_buffer = rdata;
+ urb.actual_length = rlen;
+ urb.context = hid;
+
+ dbg("getting report type %d id %d len %d", report->type + 1, report->id, rlen);
+
+ if ((read = usb_get_report(hid->dev, hid->ifnum, report->type + 1, report->id, rdata, rlen)) != rlen) {
+ dbg("reading report failed rlen %d read %d", rlen, read);
+#ifdef DEBUG
+ printk(KERN_DEBUG __FILE__ ": report = ");
+ for (j = 0; j < rlen; j++) printk(" %02x", rdata[j]);
+ printk("\n");
+#endif
+ return;
+ }
+
+ hid_irq(&urb);
+#endif
+}
+
+/*
+ * 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 n;
+
+ 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;
+ for (n = 0; n < report->maxfield; n++)
+ hid_output_field(report->field[n], data);
+};
+
+/*
+ * Set a field value. The report this field belongs to has to be
+ * created and transfered 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("offset exceeds report_count");
+ return -1;
+ }
+ if (field->logical_minimum < 0) {
+ if (value != snto32(s32ton(value, size), size)) {
+ dbg("value %d is out of range", value);
+ return -1;
+ }
+ }
+ if ( (value > field->logical_maximum)
+ || (value < field->logical_minimum)) {
+ dbg("value %d is invalid", value);
+ return -1;
+ }
+ field->value[offset] = value;
+ return 0;
+}
+
+static int hid_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
+{
+ struct hid_report_enum *report_enum = hid->report_enum + HID_OUTPUT_REPORT;
+ struct list_head *list = report_enum->report_list.next;
+ int i, j;
+
+ while (list != &report_enum->report_list) {
+ struct hid_report *report = (struct hid_report *) list;
+ list = list->next;
+ for (i = 0; i < report->maxfield; i++) {
+ *field = report->field[i];
+ for (j = 0; j < (*field)->maxusage; j++)
+ if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
+ return j;
+ }
+ }
+ return -1;
+}
+
+static int hid_submit_out(struct hid_device *hid)
+{
+ hid->urbout.transfer_buffer_length = hid->out[hid->outtail].dr.length;
+ hid->urbout.transfer_buffer = hid->out[hid->outtail].buffer;
+ hid->urbout.setup_packet = (void *) &(hid->out[hid->outtail].dr);
+
+ if (usb_submit_urb(&hid->urbout)) {
+ err("usb_submit_urb(out) failed");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void hid_ctrl(struct urb *urb)
+{
+ struct hid_device *hid = urb->context;
+
+ if (urb->status)
+ warn("ctrl urb status %d received", urb->status);
+
+ hid->outtail = (hid->outtail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
+
+ if (hid->outhead != hid->outtail)
+ hid_submit_out(hid);
+}
+
+static int hid_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+ struct hid_device *hid = dev->private;
+ struct hid_field *field = NULL;
+ int offset;
+
+ if ((offset = hid_find_field(hid, type, code, &field)) == -1) {
+ warn("event field not found");
+ return -1;
+ }
+
+ hid_set_field(field, offset, value);
+ hid_output_report(field->report, hid->out[hid->outhead].buffer);
+
+ hid->out[hid->outhead].dr.value = 0x200 | field->report->id;
+ hid->out[hid->outhead].dr.length = ((field->report->size - 1) >> 3) + 1;
+
+ hid->outhead = (hid->outhead + 1) & (HID_CONTROL_FIFO_SIZE - 1);
+
+ if (hid->outhead == hid->outtail)
+ hid->outtail = (hid->outtail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
+
+ if (hid->urbout.status != -EINPROGRESS)
+ hid_submit_out(hid);
+
+ return 0;
+}
+
+static int hid_open(struct input_dev *dev)
+{
+ struct hid_device *hid = dev->private;
+
+ if (hid->open++)
+ return 0;
+
+ if (usb_submit_urb(&hid->urb))
+ return -EIO;
+
+ return 0;
+}
+
+static void hid_close(struct input_dev *dev)
+{
+ struct hid_device *hid = dev->private;
+
+ if (!--hid->open)
+ usb_unlink_urb(&hid->urb);
+}
+
+/*
+ * Configure the input layer interface
+ * Read all reports and initalize the absoulte field values.
+ */
+
+static void hid_init_input(struct hid_device *hid)
+{
+ struct hid_report_enum *report_enum;
+ struct list_head *list;
+ int i, j, k;
+
+ hid->input.private = hid;
+ hid->input.event = hid_event;
+ hid->input.open = hid_open;
+ hid->input.close = hid_close;
+
+ for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
+
+ report_enum = hid->report_enum + k;
+ list = report_enum->report_list.next;
+
+ while (list != &report_enum->report_list) {
+
+ struct hid_report *report = (struct hid_report *) list;
+
+ list = list->next;
+
+ for (i = 0; i < report->maxfield; i++)
+ for (j = 0; j < report->field[i]->maxusage; j++)
+ hid_configure_usage(hid, report->field[i], report->field[i]->usage + j);
+
+ if (k == HID_INPUT_REPORT) {
+ usb_set_idle(hid->dev, hid->ifnum, 0, report->id);
+ hid_read_report(hid, report);
+ }
+ }
+ }
+}
+
+#define USB_VENDOR_ID_WACOM 0x056a
+#define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
+#define USB_DEVICE_ID_WACOM_INTUOS 0x0020
+
+struct hid_blacklist {
+ __u16 idVendor;
+ __u16 idProduct;
+} hid_blacklist[] = {
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE },
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS },
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1},
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2},
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3},
+ { USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4},
+ { 0, 0 }
+};
+
+static struct hid_device *usb_hid_configure(struct usb_device *dev, int ifnum, char *name)
+{
+ struct usb_interface_descriptor *interface = dev->actconfig->interface[ifnum].altsetting + 0;
+ struct hid_descriptor *hdesc;
+ struct hid_device *hid;
+ unsigned rsize = 0;
+ int n;
+
+ for (n = 0; hid_blacklist[n].idVendor; n++)
+ if ((hid_blacklist[n].idVendor == dev->descriptor.idVendor) &&
+ (hid_blacklist[n].idProduct == dev->descriptor.idProduct)) return NULL;
+
+ if (interface->bInterfaceClass != USB_INTERFACE_CLASS_HID)
+ return NULL;
+
+ if (usb_get_extra_descriptor(interface, USB_DT_HID, &hdesc)
+ && usb_get_extra_descriptor(&interface->endpoint[0], USB_DT_HID, &hdesc)) {
+ dbg("class descriptor not present\n");
+ return NULL;
+ }
+
+ for (n = 0; n < hdesc->bNumDescriptors; n++)
+ if (hdesc->desc[n].bDescriptorType == USB_DT_REPORT)
+ rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
+
+ if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
+ dbg("weird size of report descriptor (%u)", rsize);
+ return NULL;
+ }
+
+ {
+ __u8 rdesc[rsize];
+
+ if ((n = usb_get_class_descriptor(dev, interface->bInterfaceNumber, USB_DT_REPORT, 0, rdesc, rsize)) < 0) {
+ dbg("reading report descriptor failed");
+ return NULL;
+ }
+
+#ifdef DEBUG_DATA
+ printk(KERN_DEBUG __FILE__ ": report (size %u, read %d) = ", rsize, n);
+ for (n = 0; n < rsize; n++)
+ printk(" %02x", (unsigned) rdesc[n]);
+ printk("\n");
+#endif
+
+ if (!(hid = hid_parse_report(rdesc, rsize))) {
+ dbg("parsing report descriptor failed");
+ return NULL;
+ }
+ }
+
+ for (n = 0; n < interface->bNumEndpoints; n++) {
+
+ struct usb_endpoint_descriptor *endpoint = &interface->endpoint[n];
+ int pipe, maxp;
+
+ if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
+ continue;
+
+ if (!(endpoint->bEndpointAddress & 0x80)) /* Not an input endpoint */
+ continue;
+
+ pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
+ maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+
+ FILL_INT_URB(&hid->urb, dev, pipe, hid->buffer, maxp > 32 ? 32 : maxp, hid_irq, hid, endpoint->bInterval);
+
+ break;
+ }
+
+ if (n == interface->bNumEndpoints) {
+ dbg("couldn't find an input interrupt endpoint");
+ hid_free_device(hid);
+ return NULL;
+ }
+
+ hid->version = hdesc->bcdHID;
+ hid->country = hdesc->bCountryCode;
+ hid->dev = dev;
+ hid->ifnum = interface->bInterfaceNumber;
+
+ for (n = 0; n < HID_CONTROL_FIFO_SIZE; n++) {
+ hid->out[n].dr.requesttype = USB_TYPE_CLASS | USB_RECIP_INTERFACE;
+ hid->out[n].dr.request = USB_REQ_SET_REPORT;
+ hid->out[n].dr.index = hid->ifnum;
+ }
+
+ hid->input.name = hid->name;
+ hid->input.idbus = BUS_USB;
+ hid->input.idvendor = dev->descriptor.idVendor;
+ hid->input.idproduct = dev->descriptor.idProduct;
+ hid->input.idversion = dev->descriptor.bcdDevice;
+
+ if (strlen(name))
+ strcpy(hid->name, name);
+ else
+ sprintf(hid->name, "USB HID %s %04x:%04x",
+ ((hid->application >= 0x00010000) && (hid->application <= 0x00010008)) ?
+ hid_types[hid->application & 0xffff] : "Device",
+ hid->input.idvendor, hid->input.idproduct);
+
+ FILL_CONTROL_URB(&hid->urbout, dev, usb_sndctrlpipe(dev, 0),
+ (void*) &hid->out[0].dr, hid->out[0].buffer, 1, hid_ctrl, hid);
+
+ if (interface->bInterfaceSubClass == 1)
+ usb_set_protocol(dev, hid->ifnum, 1);
+
+ return hid;
+}
+
+static void* hid_probe(struct usb_device *dev, unsigned int ifnum)
+{
+ struct hid_device *hid;
+ char name[128];
+ char *buf;
+
+ dbg("HID probe called for ifnum %d", ifnum);
+
+ name[0] = 0;
+
+ if (!(buf = kmalloc(63, GFP_KERNEL)))
+ return NULL;
+
+ if (dev->descriptor.iManufacturer &&
+ usb_string(dev, dev->descriptor.iManufacturer, buf, 63) > 0)
+ strcat(name, buf);
+ if (dev->descriptor.iProduct &&
+ usb_string(dev, dev->descriptor.iProduct, buf, 63) > 0)
+ sprintf(name, "%s %s", name, buf);
+
+ kfree(buf);
+
+ if (!(hid = usb_hid_configure(dev, ifnum, name)))
+ return NULL;
+
+ hid_dump_device(hid);
+
+ hid_init_input(hid);
+ input_register_device(&hid->input);
+
+ printk(KERN_INFO "input%d: USB HID v%x.%02x %s",
+ hid->input.number,
+ hid->version >> 8, hid->version & 0xff,
+ ((hid->application >= 0x00010000) && (hid->application <= 0x00010008)) ?
+ hid_types[hid->application & 0xffff] : "Device");
+
+ if (strlen(name))
+ printk(" [%s]", name);
+ else
+ printk(" [%04x:%04x]", hid->input.idvendor, hid->input.idproduct);
+
+ printk(" on usb%d:%d.%d\n", dev->bus->busnum, dev->devnum, ifnum);
+
+ return hid;
+}
+
+static void hid_disconnect(struct usb_device *dev, void *ptr)
+{
+ struct hid_device *hid = ptr;
+
+ dbg("cleanup called");
+ usb_unlink_urb(&hid->urb);
+ input_unregister_device(&hid->input);
+ hid_free_device(hid);
+}
+
+static struct usb_driver hid_driver = {
+ name: "hid",
+ probe: hid_probe,
+ disconnect: hid_disconnect
+};
+
+static int __init hid_init(void)
+{
+ usb_register(&hid_driver);
+ return 0;
+}
+
+static void __exit hid_exit(void)
+{
+ usb_deregister(&hid_driver);
+}
+
+module_init(hid_init);
+module_exit(hid_exit);
+
+MODULE_AUTHOR("Andreas Gal, Vojtech Pavlik <vojtech@suse.cz>");
+MODULE_DESCRIPTION("USB HID support drivers");
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)