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HID: ACRUX - handle gamepads with different report layout 

There are gamepads that share the same VID and PID but have different
report structure - instead of having 4 fields with one value they have
one field that can hold all 4 values. Make the driver cope with devices
using both styles.

Signed-off-by: Sergei Kolzun <x0r@dv-life.ru>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Sergei Kolzun 2011-08-04 00:25:57 -07:00 committed by Jiri Kosina
parent 364b936fc3
commit b55ebc27b0
1 changed files with 24 additions and 12 deletions
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36
drivers/hid/hid-axff.c
View File

@ -6,7 +6,7 @@
* Xbox 360 controller.
*
* 1a34:0802 "ACRUX USB GAMEPAD 8116"
* - tested with a EXEQ EQ-PCU-02090 game controller.
* - tested with an EXEQ EQ-PCU-02090 game controller.
*
* Copyright (c) 2010 Sergei Kolzun <x0r@dv-life.ru>
*/
@ -45,7 +45,10 @@ static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect
{
struct hid_device *hid = input_get_drvdata(dev);
struct axff_device *axff = data;
struct hid_report *report = axff->report;
int field_count = 0;
int left, right;
int i, j;
left = effect->u.rumble.strong_magnitude;
right = effect->u.rumble.weak_magnitude;
@ -55,10 +58,14 @@ static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect
left = left * 0xff / 0xffff;
right = right * 0xff / 0xffff;
axff->report->field[0]->value[0] = left;
axff->report->field[1]->value[0] = right;
axff->report->field[2]->value[0] = left;
axff->report->field[3]->value[0] = right;
for (i = 0; i < report->maxfield; i++) {
for (j = 0; j < report->field[i]->report_count; j++) {
report->field[i]->value[j] =
field_count % 2 ? right : left;
field_count++;
}
}
dbg_hid("running with 0x%02x 0x%02x", left, right);
usbhid_submit_report(hid, axff->report, USB_DIR_OUT);
@ -72,6 +79,8 @@ static int axff_init(struct hid_device *hid)
struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list);
struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].report_list;
struct input_dev *dev = hidinput->input;
int field_count = 0;
int i, j;
int error;
if (list_empty(report_list)) {
@ -80,9 +89,16 @@ static int axff_init(struct hid_device *hid)
}
report = list_first_entry(report_list, struct hid_report, list);
for (i = 0; i < report->maxfield; i++) {
for (j = 0; j < report->field[i]->report_count; j++) {
report->field[i]->value[j] = 0x00;
field_count++;
}
}
if (report->maxfield < 4) {
hid_err(hid, "no fields in the report: %d\n", report->maxfield);
if (field_count < 4) {
hid_err(hid, "not enough fields in the report: %d\n",
field_count);
return -ENODEV;
}
@ -97,13 +113,9 @@ static int axff_init(struct hid_device *hid)
goto err_free_mem;
axff->report = report;
axff->report->field[0]->value[0] = 0x00;
axff->report->field[1]->value[0] = 0x00;
axff->report->field[2]->value[0] = 0x00;
axff->report->field[3]->value[0] = 0x00;
usbhid_submit_report(hid, axff->report, USB_DIR_OUT);
hid_info(hid, "Force Feedback for ACRUX game controllers by Sergei Kolzun<x0r@dv-life.ru>\n");
hid_info(hid, "Force Feedback for ACRUX game controllers by Sergei Kolzun <x0r@dv-life.ru>\n");
return 0;