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HID: lg4ff - Add autocentering command accepted by Formula Force EX 

The Logitech driver sends Formula Force EX wheel a different command to
autocenering force. FFEX will accept the standard command used by the rest of
the wheels, but it won't set the centering properly.

Signed-off-by: Michal Malý <madcatxster@gmail.com>
Signed-off-by: Simon Wood <simon@mungewell.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Michal Malý 2011-08-04 16:22:07 +02:00 committed by Jiri Kosina
parent 30bb75d71b
commit 6e2de8e0ab
1 changed files with 33 additions and 3 deletions
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36
drivers/hid/hid-lg4ff.c
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@ -157,7 +157,9 @@ static int hid_lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *e
return 0;
}
static void hid_lg4ff_set_autocenter(struct input_dev *dev, u16 magnitude)
/* Sends default autocentering command compatible with
* all wheels except Formula Force EX */
static void hid_lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude)
{
struct hid_device *hid = input_get_drvdata(dev);
struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
@ -174,6 +176,26 @@ static void hid_lg4ff_set_autocenter(struct input_dev *dev, u16 magnitude)
usbhid_submit_report(hid, report, USB_DIR_OUT);
}
/* Sends autocentering command compatible with Formula Force EX */
static void hid_lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude)
{
struct hid_device *hid = input_get_drvdata(dev);
struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
magnitude = magnitude * 90 / 65535;
report->field[0]->value[0] = 0xfe;
report->field[0]->value[1] = 0x03;
report->field[0]->value[2] = magnitude >> 14;
report->field[0]->value[3] = magnitude >> 14;
report->field[0]->value[4] = magnitude;
report->field[0]->value[5] = 0x00;
report->field[0]->value[6] = 0x00;
usbhid_submit_report(hid, report, USB_DIR_OUT);
}
/* Sends command to set range compatible with G25/G27/Driving Force GT */
static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range)
{
@ -390,8 +412,16 @@ int lg4ff_init(struct hid_device *hid)
if (error)
return error;
if (test_bit(FF_AUTOCENTER, dev->ffbit))
dev->ff->set_autocenter = hid_lg4ff_set_autocenter;
/* Check if autocentering is available and
* set the centering force to zero by default */
if (test_bit(FF_AUTOCENTER, dev->ffbit)) {
if(rev_maj == FFEX_REV_MAJ && rev_min == FFEX_REV_MIN) /* Formula Force EX expects different autocentering command */
dev->ff->set_autocenter = hid_lg4ff_set_autocenter_ffex;
else
dev->ff->set_autocenter = hid_lg4ff_set_autocenter_default;
dev->ff->set_autocenter(dev, 0);
}
/* Initialize device_list if this is the first device to handle by lg4ff */
if (!list_inited) {