linux-kernel - [PATCH v3 06/49] Input: atmel_mxt_ts - output status from T48 Noise Supression

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Message-ID: <20190917093550.18335-2-jiada_wang@mentor.com>
Date:   Tue, 17 Sep 2019 18:35:07 +0900
From:   Jiada Wang <jiada_wang@...tor.com>
To:     <nick@...anahar.org>, <dmitry.torokhov@...il.com>,
        <jikos@...nel.org>, <benjamin.tissoires@...hat.com>,
        <rydberg@...math.org>
CC:     <linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <jiada_wang@...tor.com>
Subject: [PATCH v3 06/49] Input: atmel_mxt_ts - output status from T48 Noise Supression

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

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 2895a6ff150a49f27a02938f8d262be238b296d8)
Signed-off-by: George G. Davis <george_davis@...tor.com>
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 45bab5253775..351347e2eced 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -324,6 +324,7 @@ struct mxt_data {
 	u16 T18_address;
 	u8 T19_reportid;
 	u16 T44_address;
+	u8 T48_reportid;
 	u8 T100_reportid_min;
 	u8 T100_reportid_max;
 
@@ -978,6 +979,24 @@ static void mxt_proc_t100_message(struct mxt_data *data, u8 *message)
 	data->update_input = true;
 }
 
+static int mxt_proc_t48_messages(struct mxt_data *data, u8 *msg)
+{
+	struct device *dev = &data->client->dev;
+	u8 status, state;
+
+	status = msg[1];
+	state  = msg[4];
+
+	dev_dbg(dev, "T48 state %d status %02X %s%s%s%s%s\n", state, status,
+		status & 0x01 ? "FREQCHG " : "",
+		status & 0x02 ? "APXCHG " : "",
+		status & 0x04 ? "ALGOERR " : "",
+		status & 0x10 ? "STATCHG " : "",
+		status & 0x20 ? "NLVLCHG " : "");
+
+	return 0;
+}
+
 static int mxt_proc_message(struct mxt_data *data, u8 *message)
 {
 	u8 report_id = message[0];
@@ -987,6 +1006,8 @@ 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->T48_reportid) {
+		mxt_proc_t48_messages(data, message);
 	} else if (!data->input_dev) {
 		/*
 		 * Do not report events if input device
@@ -1666,6 +1687,7 @@ static void mxt_free_object_table(struct mxt_data *data)
 	data->T18_address = 0;
 	data->T19_reportid = 0;
 	data->T44_address = 0;
+	data->T48_reportid = 0;
 	data->T100_reportid_min = 0;
 	data->T100_reportid_max = 0;
 	data->max_reportid = 0;
@@ -1747,6 +1769,9 @@ static int mxt_parse_object_table(struct mxt_data *data,
 		case MXT_SPT_GPIOPWM_T19:
 			data->T19_reportid = min_id;
 			break;
+		case MXT_PROCG_NOISESUPPRESSION_T48:
+			data->T48_reportid = min_id;
+			break;
 		case MXT_TOUCH_MULTITOUCHSCREEN_T100:
 			data->multitouch = MXT_TOUCH_MULTITOUCHSCREEN_T100;
 			data->T100_reportid_min = min_id;
-- 
2.19.2