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Subject[PATCH 16/16 v2] Input: atmel_mxt_ts - parse T6 reports
Date
The normal messages sent after boot or NVRAM update are T6 reports,
containing a status, and the config memory checksum. Parse them and dump
a useful info message.

This patch tested on an MXT224E.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index d8b23ad..f3dfb4f 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -247,6 +247,7 @@ struct mxt_data {
unsigned int max_y;

/* Cached parameters from object table */
+ u8 T6_reportid;
u8 T9_reportid_min;
u8 T9_reportid_max;
};
@@ -552,6 +553,12 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
message.reportid <= data->T9_reportid_max) {
mxt_input_touch(data, &message);
update_input = true;
+ } else if (message.reportid == data->T6_reportid) {
+ unsigned csum = message.message[1] |
+ (message.message[2] << 8) |
+ (message.message[3] << 16);
+ dev_info(dev, "Status: %02x Config Checksum: %06x\n",
+ message.message[0], csum);
} else {
mxt_dump_message(dev, &message);
}
@@ -723,6 +730,9 @@ static int mxt_get_object_table(struct mxt_data *data)
object->instances, min_id, max_id);

switch (object->type) {
+ case MXT_GEN_COMMAND_T6:
+ data->T6_reportid = min_id;
+ break;
case MXT_TOUCH_MULTI_T9:
data->T9_reportid_min = min_id;
data->T9_reportid_max = max_id;
--
1.7.7.3


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