linux-kernel - [PATCH v8 06/52] Input: atmel_mxt_ts - output status from T42 Touch Suppression

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Message-ID: <20200319150016.61398-7-jiada_wang@mentor.com>
Date:   Thu, 19 Mar 2020 07:59:30 -0700
From:   Jiada Wang <jiada_wang@...tor.com>
To:     <nick@...anahar.org>, <dmitry.torokhov@...il.com>,
        <jikos@...nel.org>, <benjamin.tissoires@...hat.com>,
        <bsz@...ihalf.com>, <rydberg@...math.org>
CC:     <linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <erosca@...adit-jv.com>, <Andrew_Gabbasov@...tor.com>,
        <jiada_wang@...tor.com>
Subject: [PATCH v8 06/52] Input: atmel_mxt_ts - output status from T42 Touch Suppression

From: Nick Dyer <nick.dyer@...ev.co.uk>

This patch outputs status from T42 touch suppression

Signed-off-by: Nick Dyer <nick.dyer@...ev.co.uk>
Acked-by: Benson Leung <bleung@...omium.org>
Acked-by: Yufeng Shen <miletus@...omium.org>
(cherry picked from ndyer/linux/for-upstream commit ab95b5a309999d2c098daaa9f88d9fcfae7eb516)
Signed-off-by: George G. Davis <george_davis@...tor.com>
[jiada: Replace dev_info() with dev_dbg()]
Signed-off-by: Jiada Wang <jiada_wang@...tor.com>
---
 drivers/input/touchscreen/atmel_mxt_ts.c | 25 ++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index a53985a7736f..f6465edaa57e 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -155,6 +155,9 @@ struct t37_debug {
 #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
@@ -323,6 +326,8 @@ 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;
@@ -979,6 +984,17 @@ 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_dbg(dev, "T42 suppress\n");
+	else
+		dev_dbg(dev, "T42 normal\n");
+}
+
 static int mxt_proc_t48_messages(struct mxt_data *data, u8 *msg)
 {
 	struct device *dev = &data->client->dev;
@@ -1006,6 +1022,9 @@ 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) {
@@ -1686,6 +1705,8 @@ 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;
@@ -1763,6 +1784,10 @@ 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;
-- 
2.17.1