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Merge branch 'for-4.18/multitouch' into for-linus 

- improvement of duplicate usage handling in hid-input from Benjamin Tissoires
- Win 8.1 precisioun touchpad spec implementation from Benjamin Tissoires
This commit is contained in:
Jiri Kosina 2018-06-08 10:25:50 +02:00
parent 72d0beb4d6 abb36fe691
commit 25721aefe1
7 changed files with 279 additions and 132 deletions
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19
drivers/hid/hid-core.c
View File

@ -57,7 +57,9 @@ MODULE_PARM_DESC(ignore_special_drivers, "Ignore any special drivers and handle
* Register a new report for a device.
*/
struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
struct hid_report *hid_register_report(struct hid_device *device,
unsigned int type, unsigned int id,
unsigned int application)
{
struct hid_report_enum *report_enum = device->report_enum + type;
struct hid_report *report;
@ -78,6 +80,7 @@ struct hid_report *hid_register_report(struct hid_device *device, unsigned type,
report->type = type;
report->size = 0;
report->device = device;
report->application = application;
report_enum->report_id_hash[id] = report;
list_add_tail(&report->list, &report_enum->report_list);
@ -221,11 +224,15 @@ static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsign
{
struct hid_report *report;
struct hid_field *field;
unsigned usages;
unsigned offset;
unsigned i;
unsigned int usages;
unsigned int offset;
unsigned int i;
unsigned int application;
report = hid_register_report(parser->device, report_type, parser->global.report_id);
application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
report = hid_register_report(parser->device, report_type,
parser->global.report_id, application);
if (!report) {
hid_err(parser->device, "hid_register_report failed\n");
return -1;
@ -259,7 +266,7 @@ static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsign
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);
field->application = application;
for (i = 0; i < usages; i++) {
unsigned j = i;

15
drivers/hid/hid-generic.c
View File

@ -56,6 +56,20 @@ static bool hid_generic_match(struct hid_device *hdev,
return true;
}
static int hid_generic_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
int ret;
hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
ret = hid_parse(hdev);
if (ret)
return ret;
return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
}
static const struct hid_device_id hid_table[] = {
{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, HID_ANY_ID, HID_ANY_ID) },
{ }
@ -66,6 +80,7 @@ static struct hid_driver hid_generic = {
.name = "hid-generic",
.id_table = hid_table,
.match = hid_generic_match,
.probe = hid_generic_probe,
};
module_hid_driver(hid_generic);

2
drivers/hid/hid-gfrm.c
View File

@ -116,7 +116,7 @@ static int gfrm_probe(struct hid_device *hdev, const struct hid_device_id *id)
* those reports reach gfrm_raw_event() from hid_input_report().
*/
if (!hid_register_report(hdev, HID_INPUT_REPORT,
GFRM100_SEARCH_KEY_REPORT_ID)) {
GFRM100_SEARCH_KEY_REPORT_ID, 0)) {
ret = -ENOMEM;
goto done;
}

123
drivers/hid/hid-input.c
View File

@ -1110,8 +1110,31 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
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);
/*
* This part is *really* controversial:
* - HID aims at being generic so we should do our best to export
* all incoming events
* - HID describes what events are, so there is no reason for ABS_X
* to be mapped to ABS_Y
* - HID is using *_MISC+N as a default value, but nothing prevents
* *_MISC+N to overwrite a legitimate even, which confuses userspace
* (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
* processing)
*
* If devices still want to use this (at their own risk), they will
* have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
* the default should be a reliable mapping.
*/
while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
usage->code = find_next_zero_bit(bit,
max + 1,
usage->code);
} else {
device->status |= HID_STAT_DUP_DETECTED;
goto ignore;
}
}
if (usage->code > max)
goto ignore;
@ -1487,15 +1510,56 @@ static void report_features(struct hid_device *hid)
}
}
static struct hid_input *hidinput_allocate(struct hid_device *hid)
static struct hid_input *hidinput_allocate(struct hid_device *hid,
unsigned int application)
{
struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
struct input_dev *input_dev = input_allocate_device();
if (!hidinput || !input_dev) {
kfree(hidinput);
input_free_device(input_dev);
hid_err(hid, "Out of memory during hid input probe\n");
return NULL;
const char *suffix = NULL;
if (!hidinput || !input_dev)
goto fail;
if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
hid->maxapplication > 1) {
switch (application) {
case HID_GD_KEYBOARD:
suffix = "Keyboard";
break;
case HID_GD_KEYPAD:
suffix = "Keypad";
break;
case HID_GD_MOUSE:
suffix = "Mouse";
break;
case HID_DG_STYLUS:
suffix = "Pen";
break;
case HID_DG_TOUCHSCREEN:
suffix = "Touchscreen";
break;
case HID_DG_TOUCHPAD:
suffix = "Touchpad";
break;
case HID_GD_SYSTEM_CONTROL:
suffix = "System Control";
break;
case HID_CP_CONSUMER_CONTROL:
suffix = "Consumer Control";
break;
case HID_GD_WIRELESS_RADIO_CTLS:
suffix = "Wireless Radio Control";
break;
default:
break;
}
}
if (suffix) {
hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
hid->name, suffix);
if (!hidinput->name)
goto fail;
}
input_set_drvdata(input_dev, hid);
@ -1505,7 +1569,7 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid)
input_dev->setkeycode = hidinput_setkeycode;
input_dev->getkeycode = hidinput_getkeycode;
input_dev->name = hid->name;
input_dev->name = hidinput->name ? hidinput->name : hid->name;
input_dev->phys = hid->phys;
input_dev->uniq = hid->uniq;
input_dev->id.bustype = hid->bus;
@ -1513,10 +1577,19 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid)
input_dev->id.product = hid->product;
input_dev->id.version = hid->version;
input_dev->dev.parent = &hid->dev;
hidinput->input = input_dev;
list_add_tail(&hidinput->list, &hid->inputs);
INIT_LIST_HEAD(&hidinput->reports);
return hidinput;
fail:
kfree(hidinput);
input_free_device(input_dev);
hid_err(hid, "Out of memory during hid input probe\n");
return NULL;
}
static bool hidinput_has_been_populated(struct hid_input *hidinput)
@ -1562,6 +1635,7 @@ static void hidinput_cleanup_hidinput(struct hid_device *hid,
list_del(&hidinput->list);
input_free_device(hidinput->input);
kfree(hidinput->name);
for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
if (k == HID_OUTPUT_REPORT &&
@ -1594,6 +1668,20 @@ static struct hid_input *hidinput_match(struct hid_report *report)
return NULL;
}
static struct hid_input *hidinput_match_application(struct hid_report *report)
{
struct hid_device *hid = report->device;
struct hid_input *hidinput;
list_for_each_entry(hidinput, &hid->inputs, list) {
if (hidinput->report &&
hidinput->report->application == report->application)
return hidinput;
}
return NULL;
}
static inline void hidinput_configure_usages(struct hid_input *hidinput,
struct hid_report *report)
{
@ -1616,11 +1704,14 @@ int hidinput_connect(struct hid_device *hid, unsigned int force)
struct hid_driver *drv = hid->driver;
struct hid_report *report;
struct hid_input *next, *hidinput = NULL;
unsigned int application;
int i, k;
INIT_LIST_HEAD(&hid->inputs);
INIT_WORK(&hid->led_work, hidinput_led_worker);
hid->status &= ~HID_STAT_DUP_DETECTED;
if (!force) {
for (i = 0; i < hid->maxcollection; i++) {
struct hid_collection *col = &hid->collection[i];
@ -1646,15 +1737,20 @@ int hidinput_connect(struct hid_device *hid, unsigned int force)
if (!report->maxfield)
continue;
application = report->application;
/*
* Find the previous hidinput report attached
* to this report id.
*/
if (hid->quirks & HID_QUIRK_MULTI_INPUT)
hidinput = hidinput_match(report);
else if (hid->maxapplication > 1 &&
(hid->quirks & HID_QUIRK_INPUT_PER_APP))
hidinput = hidinput_match_application(report);
if (!hidinput) {
hidinput = hidinput_allocate(hid);
hidinput = hidinput_allocate(hid, application);
if (!hidinput)
goto out_unwind;
}
@ -1663,6 +1759,9 @@ int hidinput_connect(struct hid_device *hid, unsigned int force)
if (hid->quirks & HID_QUIRK_MULTI_INPUT)
hidinput->report = report;
list_add_tail(&report->hidinput_list,
&hidinput->reports);
}
}
@ -1687,6 +1786,10 @@ int hidinput_connect(struct hid_device *hid, unsigned int force)
goto out_unwind;
}
if (hid->status & HID_STAT_DUP_DETECTED)
hid_dbg(hid,
"Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
return 0;
out_unwind:

6
drivers/hid/hid-magicmouse.c
View File

@ -531,12 +531,12 @@ static int magicmouse_probe(struct hid_device *hdev,
if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE)
report = hid_register_report(hdev, HID_INPUT_REPORT,
MOUSE_REPORT_ID);
MOUSE_REPORT_ID, 0);
else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
report = hid_register_report(hdev, HID_INPUT_REPORT,
TRACKPAD_REPORT_ID);
TRACKPAD_REPORT_ID, 0);
report = hid_register_report(hdev, HID_INPUT_REPORT,
DOUBLE_REPORT_ID);
DOUBLE_REPORT_ID, 0);
}
if (!report) {

228
drivers/hid/hid-multitouch.c
View File

@ -81,6 +81,11 @@ MODULE_LICENSE("GPL");
#define MT_BUTTONTYPE_CLICKPAD 0
enum latency_mode {
HID_LATENCY_NORMAL = 0,
HID_LATENCY_HIGH = 1,
};
#define MT_IO_FLAGS_RUNNING 0
#define MT_IO_FLAGS_ACTIVE_SLOTS 1
#define MT_IO_FLAGS_PENDING_SLOTS 2
@ -127,11 +132,7 @@ struct mt_device {
int left_button_state; /* left button state */
unsigned last_slot_field; /* the last field of a slot */
unsigned mt_report_id; /* the report ID of the multitouch device */
__s16 inputmode; /* InputMode HID feature, -1 if non-existent */
__s16 inputmode_index; /* InputMode HID feature index in the report */
__s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
-1 if non-existent */
__u8 inputmode_value; /* InputMode HID feature value */
__u8 inputmode_value; /* InputMode HID feature value */
__u8 num_received; /* how many contacts we received */
__u8 num_expected; /* expected last contact index */
__u8 maxcontacts;
@ -415,32 +416,9 @@ static void mt_feature_mapping(struct hid_device *hdev,
struct mt_device *td = hid_get_drvdata(hdev);
switch (usage->hid) {
case HID_DG_INPUTMODE:
/* Ignore if value index is out of bounds. */
if (usage->usage_index >= field->report_count) {
dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
break;
}
if (td->inputmode < 0) {
td->inputmode = field->report->id;
td->inputmode_index = usage->usage_index;
} else {
/*
* Some elan panels wrongly declare 2 input mode
* features, and silently ignore when we set the
* value in the second field. Skip the second feature
* and hope for the best.
*/
dev_info(&hdev->dev,
"Ignoring the extra HID_DG_INPUTMODE\n");
}
break;
case HID_DG_CONTACTMAX:
mt_get_feature(hdev, field->report);
td->maxcontact_report_id = field->report->id;
td->maxcontacts = field->value[0];
if (!td->maxcontacts &&
field->logical_maximum <= MT_MAX_MAXCONTACT)
@ -620,13 +598,16 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
hid_map_usage(hi, usage, bit, max,
EV_MSC, MSC_TIMESTAMP);
input_set_capability(hi->input, EV_MSC, MSC_TIMESTAMP);
mt_store_field(usage, td, hi);
/* Ignore if indexes are out of bounds. */
if (field->index >= field->report->maxfield ||
usage->usage_index >= field->report_count)
return 1;
td->scantime_index = field->index;
td->scantime_val_index = usage->usage_index;
/*
* We don't set td->last_slot_field as scan time is
* global to the report.
*/
return 1;
case HID_DG_CONTACTCOUNT:
/* Ignore if indexes are out of bounds. */
@ -1181,61 +1162,100 @@ static void mt_report(struct hid_device *hid, struct hid_report *report)
input_sync(field->hidinput->input);
}
static void mt_set_input_mode(struct hid_device *hdev)
static bool mt_need_to_apply_feature(struct hid_device *hdev,
struct hid_field *field,
struct hid_usage *usage,
enum latency_mode latency,
bool surface_switch,
bool button_switch)
{
struct mt_device *td = hid_get_drvdata(hdev);
struct hid_report *r;
struct hid_report_enum *re;
struct mt_class *cls = &td->mtclass;
struct hid_report *report = field->report;
unsigned int index = usage->usage_index;
char *buf;
u32 report_len;
int max;
if (td->inputmode < 0)
return;
re = &(hdev->report_enum[HID_FEATURE_REPORT]);
r = re->report_id_hash[td->inputmode];
if (r) {
switch (usage->hid) {
case HID_DG_INPUTMODE:
if (cls->quirks & MT_QUIRK_FORCE_GET_FEATURE) {
report_len = hid_report_len(r);
buf = hid_alloc_report_buf(r, GFP_KERNEL);
report_len = hid_report_len(report);
buf = hid_alloc_report_buf(report, GFP_KERNEL);
if (!buf) {
hid_err(hdev, "failed to allocate buffer for report\n");
return;
hid_err(hdev,
"failed to allocate buffer for report\n");
return false;
}
hid_hw_raw_request(hdev, r->id, buf, report_len,
hid_hw_raw_request(hdev, report->id, buf, report_len,
HID_FEATURE_REPORT,
HID_REQ_GET_REPORT);
kfree(buf);
}
r->field[0]->value[td->inputmode_index] = td->inputmode_value;
hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
field->value[index] = td->inputmode_value;
return true;
case HID_DG_CONTACTMAX:
if (td->mtclass.maxcontacts) {
max = min_t(int, field->logical_maximum,
td->mtclass.maxcontacts);
if (field->value[index] != max) {
field->value[index] = max;
return true;
}
}
break;
case HID_DG_LATENCYMODE:
field->value[index] = latency;
return true;
case HID_DG_SURFACESWITCH:
field->value[index] = surface_switch;
return true;
case HID_DG_BUTTONSWITCH:
field->value[index] = button_switch;
return true;
}
return false; /* no need to update the report */
}
static void mt_set_maxcontacts(struct hid_device *hdev)
static void mt_set_modes(struct hid_device *hdev, enum latency_mode latency,
bool surface_switch, bool button_switch)
{
struct mt_device *td = hid_get_drvdata(hdev);
struct hid_report *r;
struct hid_report_enum *re;
int fieldmax, max;
struct hid_report_enum *rep_enum;
struct hid_report *rep;
struct hid_usage *usage;
int i, j;
bool update_report;
if (td->maxcontact_report_id < 0)
return;
rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
list_for_each_entry(rep, &rep_enum->report_list, list) {
update_report = false;
if (!td->mtclass.maxcontacts)
return;
for (i = 0; i < rep->maxfield; i++) {
/* Ignore if report count is out of bounds. */
if (rep->field[i]->report_count < 1)
continue;
re = &hdev->report_enum[HID_FEATURE_REPORT];
r = re->report_id_hash[td->maxcontact_report_id];
if (r) {
max = td->mtclass.maxcontacts;
fieldmax = r->field[0]->logical_maximum;
max = min(fieldmax, max);
if (r->field[0]->value[0] != max) {
r->field[0]->value[0] = max;
hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
for (j = 0; j < rep->field[i]->maxusage; j++) {
usage = &rep->field[i]->usage[j];
if (mt_need_to_apply_feature(hdev,
rep->field[i],
usage,
latency,
surface_switch,
button_switch))
update_report = true;
}
}
if (update_report)
hid_hw_request(hdev, rep, HID_REQ_SET_REPORT);
}
}
@ -1274,54 +1294,48 @@ static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
struct mt_device *td = hid_get_drvdata(hdev);
char *name;
const char *suffix = NULL;
struct hid_field *field = hi->report->field[0];
unsigned int application = 0;
struct hid_report *report;
int ret;
if (hi->report->id == td->mt_report_id) {
ret = mt_touch_input_configured(hdev, hi);
if (ret)
return ret;
}
list_for_each_entry(report, &hi->reports, hidinput_list) {
application = report->application;
if (report->id == td->mt_report_id) {
ret = mt_touch_input_configured(hdev, hi);
if (ret)
return ret;
}
/*
* some egalax touchscreens have "application == HID_DG_TOUCHSCREEN"
* for the stylus. Check this first, and then rely on the application
* field.
*/
if (hi->report->field[0]->physical == HID_DG_STYLUS) {
suffix = "Pen";
/* force BTN_STYLUS to allow tablet matching in udev */
__set_bit(BTN_STYLUS, hi->input->keybit);
} else {
switch (field->application) {
case HID_GD_KEYBOARD:
suffix = "Keyboard";
break;
case HID_GD_KEYPAD:
suffix = "Keypad";
break;
case HID_GD_MOUSE:
suffix = "Mouse";
break;
case HID_DG_STYLUS:
/*
* some egalax touchscreens have "application == DG_TOUCHSCREEN"
* for the stylus. Check this first, and then rely on
* the application field.
*/
if (report->field[0]->physical == HID_DG_STYLUS) {
suffix = "Pen";
/* force BTN_STYLUS to allow tablet matching in udev */
__set_bit(BTN_STYLUS, hi->input->keybit);
}
}
if (!suffix) {
switch (application) {
case HID_GD_KEYBOARD:
case HID_GD_KEYPAD:
case HID_GD_MOUSE:
case HID_DG_TOUCHPAD:
case HID_GD_SYSTEM_CONTROL:
case HID_CP_CONSUMER_CONTROL:
case HID_GD_WIRELESS_RADIO_CTLS:
/* already handled by hid core */
break;
case HID_DG_TOUCHSCREEN:
/* we do not set suffix = "Touchscreen" */
hi->input->name = hdev->name;
break;
case HID_DG_TOUCHPAD:
suffix = "Touchpad";
break;
case HID_GD_SYSTEM_CONTROL:
suffix = "System Control";
break;
case HID_CP_CONSUMER_CONTROL:
suffix = "Consumer Control";
break;
case HID_GD_WIRELESS_RADIO_CTLS:
suffix = "Wireless Radio Control";
case HID_DG_STYLUS:
/* force BTN_STYLUS to allow tablet matching in udev */
__set_bit(BTN_STYLUS, hi->input->keybit);
break;
case HID_VD_ASUS_CUSTOM_MEDIA_KEYS:
suffix = "Custom Media Keys";
@ -1434,8 +1448,6 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
}
td->hdev = hdev;
td->mtclass = *mtclass;
td->inputmode = -1;
td->maxcontact_report_id = -1;
td->inputmode_value = MT_INPUTMODE_TOUCHSCREEN;
td->cc_index = -1;
td->scantime_index = -1;
@ -1459,10 +1471,10 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
/*
* This allows the driver to handle different input sensors
* that emits events through different reports on the same HID
* that emits events through different applications on the same HID
* device.
*/
hdev->quirks |= HID_QUIRK_MULTI_INPUT;
hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
timer_setup(&td->release_timer, mt_expired_timeout, 0);
@ -1482,8 +1494,7 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
dev_warn(&hdev->dev, "Cannot allocate sysfs group for %s\n",
hdev->name);
mt_set_maxcontacts(hdev);
mt_set_input_mode(hdev);
mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
/* release .fields memory as it is not used anymore */
devm_kfree(&hdev->dev, td->fields);
@ -1496,8 +1507,7 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
static int mt_reset_resume(struct hid_device *hdev)
{
mt_release_contacts(hdev);
mt_set_maxcontacts(hdev);
mt_set_input_mode(hdev);
mt_set_modes(hdev, HID_LATENCY_NORMAL, true, true);
return 0;
}

18
include/linux/hid.h
View File

@ -292,9 +292,12 @@ struct hid_item {
#define HID_DG_CONTACTCOUNT 0x000d0054
#define HID_DG_CONTACTMAX 0x000d0055
#define HID_DG_SCANTIME 0x000d0056
#define HID_DG_SURFACESWITCH 0x000d0057
#define HID_DG_BUTTONSWITCH 0x000d0058
#define HID_DG_BUTTONTYPE 0x000d0059
#define HID_DG_BARRELSWITCH2 0x000d005a
#define HID_DG_TOOLSERIALNUMBER 0x000d005b
#define HID_DG_LATENCYMODE 0x000d0060
#define HID_VD_ASUS_CUSTOM_MEDIA_KEYS 0xff310076
/*
@ -341,10 +344,12 @@ struct hid_item {
/* BIT(8) reserved for backward compatibility, was HID_QUIRK_NO_EMPTY_INPUT */
/* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */
#define HID_QUIRK_ALWAYS_POLL BIT(10)
#define HID_QUIRK_INPUT_PER_APP BIT(11)
#define HID_QUIRK_SKIP_OUTPUT_REPORTS BIT(16)
#define HID_QUIRK_SKIP_OUTPUT_REPORT_ID BIT(17)
#define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP BIT(18)
#define HID_QUIRK_HAVE_SPECIAL_DRIVER BIT(19)
#define HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE BIT(20)
#define HID_QUIRK_FULLSPEED_INTERVAL BIT(28)
#define HID_QUIRK_NO_INIT_REPORTS BIT(29)
#define HID_QUIRK_NO_IGNORE BIT(30)
@ -464,8 +469,10 @@ struct hid_field {
struct hid_report {
struct list_head list;
unsigned id; /* id of this report */
unsigned type; /* report type */
struct list_head hidinput_list;
unsigned int id; /* id of this report */
unsigned int type; /* report type */
unsigned int application; /* application usage for this report */
struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */
unsigned maxfield; /* maximum valid field index */
unsigned size; /* size of the report (bits) */
@ -503,12 +510,15 @@ struct hid_output_fifo {
#define HID_STAT_ADDED BIT(0)
#define HID_STAT_PARSED BIT(1)
#define HID_STAT_DUP_DETECTED BIT(2)
struct hid_input {
struct list_head list;
struct hid_report *report;
struct input_dev *input;
const char *name;
bool registered;
struct list_head reports; /* the list of reports */
};
enum hid_type {
@ -865,7 +875,9 @@ void hid_output_report(struct hid_report *report, __u8 *data);
void __hid_request(struct hid_device *hid, struct hid_report *rep, int reqtype);
u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags);
struct hid_device *hid_allocate_device(void);
struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id);
struct hid_report *hid_register_report(struct hid_device *device,
unsigned int type, unsigned int id,
unsigned int application);
int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
struct hid_report *hid_validate_values(struct hid_device *hid,
unsigned int type, unsigned int id,