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Input: atmel_mxt_ts - mXT224 DMA quirk was fixed in firmware v2.0.AA

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Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Nick Dyer 2014-08-07 09:56:01 -07:00 committed by Dmitry Torokhov
parent fc8104bc5a
commit 437d4f3797
1 changed files with 5 additions and 3 deletions
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8
drivers/input/touchscreen/atmel_mxt_ts.c
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@ -1422,10 +1422,12 @@ static int mxt_get_object_table(struct mxt_data *data)
switch (object->type) {
case MXT_GEN_MESSAGE_T5:
if (data->info.family_id == 0x80) {
if (data->info.family_id == 0x80 &&
data->info.version < 0x20) {
/*
* On mXT224 read and discard unused CRC byte
* otherwise DMA reads are misaligned
* On mXT224 firmware versions prior to V2.0
* read and discard unused CRC byte otherwise
* DMA reads are misaligned.
*/
data->T5_msg_size = mxt_obj_size(object);
} else {