Input: atmel_mxt_ts - output status from T42 Touch Suppression

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Acked-by: Benson Leung <bleung@chromium.org>
Acked-by: Yufeng Shen <miletus@chromium.org>

drivers/input/touchscreen/atmel_mxt_ts.c

@@ -132,6 +132,9 @@ struct t9_range {
 #define MXT_RESET_VALUE		0x01
 #define MXT_BACKUP_VALUE	0x55
 
+/* Define for MXT_PROCI_TOUCHSUPPRESSION_T42 */
+#define MXT_T42_MSG_TCHSUP	BIT(0)
+
 /* T100 Multiple Touch Touchscreen */
 #define MXT_T100_CTRL		0
 #define MXT_T100_CFG1		1
@@ -263,6 +266,8 @@ struct mxt_data {
 	u8 T9_reportid_max;
 	u16 T18_address;
 	u8 T19_reportid;
+	u8 T42_reportid_min;
+	u8 T42_reportid_max;
 	u16 T44_address;
 	u8 T48_reportid;
 	u8 T100_reportid_min;
@@ -905,6 +910,17 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 	data->update_input = true;
 }
 
+static void mxt_proc_t42_messages(struct mxt_data *data, u8 *msg)
+{
+	struct device *dev = &data->client->dev;
+	u8 status = msg[1];
+
+	if (status & MXT_T42_MSG_TCHSUP)
+		dev_info(dev, "T42 suppress\n");
+	else
+		dev_info(dev, "T42 normal\n");
+}
+
 static int mxt_proc_t48_messages(struct mxt_data *data, u8 *msg)
 {
 	struct device *dev = &data->client->dev;
@@ -932,6 +948,9 @@ static int mxt_proc_message(struct mxt_data *data, u8 *message)
 
 	if (report_id == data->T6_reportid) {
 		mxt_proc_t6_messages(data, message);
+	} else if (report_id >= data->T42_reportid_min
+		   && report_id <= data->T42_reportid_max) {
+		mxt_proc_t42_messages(data, message);
 	} else if (report_id == data->T48_reportid) {
 		mxt_proc_t48_messages(data, message);
 	} else if (!data->input_dev) {
@@ -1607,6 +1626,8 @@ static void mxt_free_object_table(struct mxt_data *data)
 	data->T9_reportid_max = 0;
 	data->T18_address = 0;
 	data->T19_reportid = 0;
+	data->T42_reportid_min = 0;
+	data->T42_reportid_max = 0;
 	data->T44_address = 0;
 	data->T48_reportid = 0;
 	data->T100_reportid_min = 0;
@@ -1684,6 +1705,10 @@ static int mxt_parse_object_table(struct mxt_data *data,
 		case MXT_SPT_COMMSCONFIG_T18:
 			data->T18_address = object->start_address;
 			break;
+		case MXT_PROCI_TOUCHSUPPRESSION_T42:
+			data->T42_reportid_min = min_id;
+			data->T42_reportid_max = max_id;
+			break;
 		case MXT_SPT_MESSAGECOUNT_T44:
 			data->T44_address = object->start_address;
 			break;