diff mbox

[1/4] add missing blob structure field for tag id

Message ID 1518079386-4647-2-git-send-email-floe@butterbrot.org (mailing list archive)
State New, archived
Headers show

Commit Message

Florian Echtler Feb. 8, 2018, 8:43 a.m. UTC 
The SUR40 can recognize specific printed patterns directly in hardware;
this information (i.e. the pattern id) is present but currently unused
in the blob structure.

Signed-off-by: Florian Echtler <floe@butterbrot.org>
---
 drivers/input/touchscreen/sur40.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index f16f835..8375b06 100644
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -81,7 +81,10 @@  struct sur40_blob {
 
 	__le32 area;       /* size in pixels/pressure (?) */
 
-	u8 padding[32];
+	u8 padding[24];
+
+	__le32 tag_id;     /* valid when type == 0x04 (SUR40_TAG) */
+	__le32 unknown;
 
 } __packed;