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HID: multitouch: breaks out touch handling in specific functions 

This will allow easier integration of hybrid pen and touch devices.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Benjamin Tissoires 2013-03-22 18:38:29 +01:00 committed by Jiri Kosina
parent 4f22decf9b
commit a69c5f8b16
1 changed files with 83 additions and 40 deletions
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123
drivers/hid/hid-multitouch.c
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@ -114,6 +114,9 @@ struct mt_device {
unsigned mt_flags; /* flags to pass to input-mt */
};
static void mt_post_parse_default_settings(struct mt_device *td);
static void mt_post_parse(struct mt_device *td);
/* classes of device behavior */
#define MT_CLS_DEFAULT 0x0001
@ -364,7 +367,7 @@ static void mt_store_field(struct hid_usage *usage, struct mt_device *td,
f->usages[f->length++] = usage->hid;
}
static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
@ -373,13 +376,8 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
int code;
struct hid_usage *prev_usage = NULL;
/* Only map fields from TouchScreen or TouchPad collections.
* We need to ignore fields that belong to other collections
* such as Mouse that might have the same GenericDesktop usages. */
if (field->application == HID_DG_TOUCHSCREEN)
td->mt_flags |= INPUT_MT_DIRECT;
else if (field->application != HID_DG_TOUCHPAD)
return 0;
/*
* Model touchscreens providing buttons as touchpads.
@ -388,12 +386,6 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
(usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON)
td->mt_flags |= INPUT_MT_POINTER;
/* eGalax devices provide a Digitizer.Stylus input which overrides
* the correct Digitizers.Finger X/Y ranges.
* Let's just ignore this input. */
if (field->physical == HID_DG_STYLUS)
return -1;
if (usage->usage_index)
prev_usage = &field->usage[usage->usage_index - 1];
@ -514,7 +506,7 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
return 0;
}
static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
@ -605,7 +597,7 @@ static void mt_sync_frame(struct mt_device *td, struct input_dev *input)
td->num_received = 0;
}
static int mt_event(struct hid_device *hid, struct hid_field *field,
static int mt_touch_event(struct hid_device *hid, struct hid_field *field,
struct hid_usage *usage, __s32 value)
{
/* we will handle the hidinput part later, now remains hiddev */
@ -681,19 +673,13 @@ static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
}
}
static void mt_report(struct hid_device *hid, struct hid_report *report)
static void mt_touch_report(struct hid_device *hid, struct hid_report *report)
{
struct mt_device *td = hid_get_drvdata(hid);
struct hid_field *field;
unsigned count;
int r, n;
if (report->id != td->mt_report_id)
return;
if (!(hid->claimed & HID_CLAIMED_INPUT))
return;
/*
* Includes multi-packet support where subsequent
* packets are sent with zero contactcount.
@ -721,6 +707,81 @@ static void mt_report(struct hid_device *hid, struct hid_report *report)
mt_sync_frame(td, report->field[0]->hidinput->input);
}
static void mt_touch_input_configured(struct hid_device *hdev,
struct hid_input *hi)
{
struct mt_device *td = hid_get_drvdata(hdev);
struct mt_class *cls = &td->mtclass;
struct input_dev *input = hi->input;
if (!td->maxcontacts)
td->maxcontacts = MT_DEFAULT_MAXCONTACT;
mt_post_parse(td);
if (td->serial_maybe)
mt_post_parse_default_settings(td);
if (cls->is_indirect)
td->mt_flags |= INPUT_MT_POINTER;
if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
td->mt_flags |= INPUT_MT_DROP_UNUSED;
input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
td->mt_flags = 0;
}
static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
/* Only map fields from TouchScreen or TouchPad collections.
* We need to ignore fields that belong to other collections
* such as Mouse that might have the same GenericDesktop usages. */
if (field->application != HID_DG_TOUCHSCREEN &&
field->application != HID_DG_TOUCHPAD)
return 0;
/* eGalax devices provide a Digitizer.Stylus input which overrides
* the correct Digitizers.Finger X/Y ranges.
* Let's just ignore this input. */
if (field->physical == HID_DG_STYLUS)
return -1;
return mt_touch_input_mapping(hdev, hi, field, usage, bit, max);
}
static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
struct hid_field *field, struct hid_usage *usage,
unsigned long **bit, int *max)
{
return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
}
static int mt_event(struct hid_device *hid, struct hid_field *field,
struct hid_usage *usage, __s32 value)
{
struct mt_device *td = hid_get_drvdata(hid);
if (field->report->id == td->mt_report_id)
return mt_touch_event(hid, field, usage, value);
/* ignore other reports */
return 1;
}
static void mt_report(struct hid_device *hid, struct hid_report *report)
{
struct mt_device *td = hid_get_drvdata(hid);
if (!(hid->claimed & HID_CLAIMED_INPUT))
return;
if (report->id == td->mt_report_id)
mt_touch_report(hid, report);
}
static void mt_set_input_mode(struct hid_device *hdev)
{
struct mt_device *td = hid_get_drvdata(hdev);
@ -795,32 +856,14 @@ static void mt_post_parse(struct mt_device *td)
}
static void mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
{
struct mt_device *td = hid_get_drvdata(hdev);
struct mt_class *cls = &td->mtclass;
struct input_dev *input = hi->input;
/* Only initialize slots for MT input devices */
if (!test_bit(ABS_MT_POSITION_X, input->absbit))
return;
if (!td->maxcontacts)
td->maxcontacts = MT_DEFAULT_MAXCONTACT;
mt_post_parse(td);
if (td->serial_maybe)
mt_post_parse_default_settings(td);
if (cls->is_indirect)
td->mt_flags |= INPUT_MT_POINTER;
if (cls->quirks & MT_QUIRK_NOT_SEEN_MEANS_UP)
td->mt_flags |= INPUT_MT_DROP_UNUSED;
input_mt_init_slots(input, td->maxcontacts, td->mt_flags);
td->mt_flags = 0;
mt_touch_input_configured(hdev, hi);
}
static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)