From 4aceed37e315e8eaa26cb4c8dfd619a32fa24669 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 19 Jun 2012 14:39:52 +0200 Subject: HID: hid-multitouch: fix input mode feature command Zytronic panels shows a new way of setting the Input Mode feature. This feature is put in the second usage in the HID feature, instead of the first, as the majority of the multitouch devices. This patch adds a detection step when the feature is presented to know where the feature is located in the report. We can then trigger the right command to the device. This removes the magic number "0" in the function mt_set_input_mode. Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-multitouch.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'drivers/hid/hid-multitouch.c') diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 61cc4cbe0f3e..9a3891e00cdd 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -83,6 +83,7 @@ struct mt_device { unsigned last_field_index; /* last field index of the report */ unsigned last_slot_field; /* the last field of a slot */ __s8 inputmode; /* InputMode HID feature, -1 if non-existent */ + __s8 inputmode_index; /* InputMode HID feature index in the report */ __s8 maxcontact_report_id; /* Maximum Contact Number HID feature, -1 if non-existent */ __u8 num_received; /* how many contacts we received */ @@ -260,10 +261,20 @@ static void mt_feature_mapping(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage) { struct mt_device *td = hid_get_drvdata(hdev); + int i; switch (usage->hid) { case HID_DG_INPUTMODE: td->inputmode = field->report->id; + td->inputmode_index = 0; /* has to be updated below */ + + for (i=0; i < field->maxusage; i++) { + if (field->usage[i].hid == usage->hid) { + td->inputmode_index = i; + break; + } + } + break; case HID_DG_CONTACTMAX: td->maxcontact_report_id = field->report->id; @@ -618,7 +629,7 @@ static void mt_set_input_mode(struct hid_device *hdev) re = &(hdev->report_enum[HID_FEATURE_REPORT]); r = re->report_id_hash[td->inputmode]; if (r) { - r->field[0]->value[0] = 0x02; + r->field[0]->value[td->inputmode_index] = 0x02; usbhid_submit_report(hdev, r, USB_DIR_OUT); } } -- cgit v1.2.3