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@xxxxxxxxxxxx>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 21 ++++++++++++++-------
1 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index f9a9be9..8350bcc 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -248,6 +248,7 @@ struct mxt_data {
unsigned int max_y;
/* Cached parameters from object table */
+ u8 T6_reportid;
u8 T9_reportid_min;
u8 T9_reportid_max;
};
@@ -555,8 +556,6 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
struct device *dev = &data->client->dev;
int id;
u8 reportid;
- u8 max_reportid;
- u8 min_reportid;
bool update_input = false;
do {
@@ -567,11 +566,15 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
reportid = message.reportid;
- max_reportid = data->T9_reportid_max;
- min_reportid = data->T9_reportid_min;
- id = reportid - min_reportid;
-
- if (reportid >= min_reportid && reportid <= max_reportid) {
+ if (reportid == data->T6_reportid) {
+ unsigned csum = message.message[1] |
+ (message.message[2] << 8) |
+ (message.message[3] << 16);
+ dev_dbg(dev, "Status: %02x Config Checksum: %06x\n",
+ message.message[0], csum);
+ } else if (reportid >= data->T9_reportid_min &&
+ reportid <= data->T9_reportid_max) {
+ id = reportid - data->T9_reportid_min;
mxt_input_touchevent(data, &message, id);
update_input = true;
} else {
@@ -749,6 +752,9 @@ static int mxt_get_object_table(struct mxt_data *data)
object->instances + 1, 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;
@@ -1008,6 +1014,7 @@ static ssize_t mxt_update_fw_store(struct device *dev,
/* Destroy old object table and any cached fields */
kfree(data->object_table);
data->object_table = NULL;
+ data->T6_reportid = 0;
data->T9_reportid_min = 0;
data->T9_reportid_max = 0;
--
1.7.7.3
--
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