[PATCH 2/2] Input: atmel_mxt_ts - mXT224 DMA quirk was fixed in firmware v2.0.AA

[nick . dyer]

From: Nick Dyer <nick.dyer@xxxxxxxxxxx>

Signed-off-by: Nick Dyer <nick.dyer@xxxxxxxxxxx>
---
 drivers/input/touchscreen/atmel_mxt_ts.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index da497db..67ea728 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -1424,10 +1424,12 @@ 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 {
-- 
1.9.1

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