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>
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@ -157,7 +157,9 @@ static int hid_lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *e
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return 0;
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}
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static void hid_lg4ff_set_autocenter(struct input_dev *dev, u16 magnitude)
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/* Sends default autocentering command compatible with
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* all wheels except Formula Force EX */
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static void hid_lg4ff_set_autocenter_default(struct input_dev *dev, u16 magnitude)
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{
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struct hid_device *hid = input_get_drvdata(dev);
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struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
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@ -174,6 +176,26 @@ static void hid_lg4ff_set_autocenter(struct input_dev *dev, u16 magnitude)
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usbhid_submit_report(hid, report, USB_DIR_OUT);
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}
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/* Sends autocentering command compatible with Formula Force EX */
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static void hid_lg4ff_set_autocenter_ffex(struct input_dev *dev, u16 magnitude)
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{
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struct hid_device *hid = input_get_drvdata(dev);
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struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
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struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
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magnitude = magnitude * 90 / 65535;
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report->field[0]->value[0] = 0xfe;
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report->field[0]->value[1] = 0x03;
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report->field[0]->value[2] = magnitude >> 14;
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report->field[0]->value[3] = magnitude >> 14;
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report->field[0]->value[4] = magnitude;
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report->field[0]->value[5] = 0x00;
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report->field[0]->value[6] = 0x00;
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usbhid_submit_report(hid, report, USB_DIR_OUT);
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}
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/* Sends command to set range compatible with G25/G27/Driving Force GT */
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static void hid_lg4ff_set_range_g25(struct hid_device *hid, u16 range)
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{
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@ -390,8 +412,16 @@ int lg4ff_init(struct hid_device *hid)
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if (error)
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return error;
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if (test_bit(FF_AUTOCENTER, dev->ffbit))
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dev->ff->set_autocenter = hid_lg4ff_set_autocenter;
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/* Check if autocentering is available and
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* set the centering force to zero by default */
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if (test_bit(FF_AUTOCENTER, dev->ffbit)) {
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if(rev_maj == FFEX_REV_MAJ && rev_min == FFEX_REV_MIN) /* Formula Force EX expects different autocentering command */
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dev->ff->set_autocenter = hid_lg4ff_set_autocenter_ffex;
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else
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dev->ff->set_autocenter = hid_lg4ff_set_autocenter_default;
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dev->ff->set_autocenter(dev, 0);
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}
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/* Initialize device_list if this is the first device to handle by lg4ff */
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if (!list_inited) {
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