static int gfrm_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret;
hid_set_drvdata(hdev, (void *) id->driver_data);
ret = hid_parse(hdev);
if (ret)
goto done;
if (id->driver_data == GFRM100) {
/*
* GFRM100 HID Report Descriptor does not describe the Search
* key reports. Thus, we need to add it manually here, so that
* those reports reach gfrm_raw_event() from hid_input_report().
*/
if (!hid_register_report(hdev, HID_INPUT_REPORT,
GFRM100_SEARCH_KEY_REPORT_ID, 0)) {
ret = -ENOMEM;
goto done;
}
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
done:
return ret;
}
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 (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;
offset = report->size;
report->size += parser->global.report_size * parser->global.report_count;
if (usages < parser->global.report_count)
usages = 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);
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;
}
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);
field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
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;
}
