linux-kernel - [PATCH v10 04/12] Input: wacom_i2c

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Message-Id: <20210829091925.190-6-alistair@alistair23.me>
Date:   Sun, 29 Aug 2021 19:19:17 +1000
From:   Alistair Francis <alistair@...stair23.me>
To:     dmitry.torokhov@...il.com, linux-input@...r.kernel.org,
        linux-imx@....com, kernel@...gutronix.de, pinglinux@...il.com,
        tatsunosuke.tobita@...om.com, junkpainting@...il.com,
        ping.cheng@...om.com
Cc:     linux-kernel@...r.kernel.org, alistair23@...il.com,
        robh+dt@...nel.org, devicetree@...r.kernel.org,
        Alistair Francis <alistair@...stair23.me>
Subject: [PATCH v10 04/12] Input: wacom_i2c - Add touchscren properties

Connect touchscreen properties to the wacom_i2c.

Signed-off-by: Alistair Francis <alistair@...stair23.me>
---
 drivers/input/touchscreen/wacom_i2c.c | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/drivers/input/touchscreen/wacom_i2c.c b/drivers/input/touchscreen/wacom_i2c.c
index 6053595f2b30..28255c77d426 100644
--- a/drivers/input/touchscreen/wacom_i2c.c
+++ b/drivers/input/touchscreen/wacom_i2c.c
@@ -11,6 +11,7 @@
 #include <linux/i2c.h>
 #include <linux/slab.h>
 #include <linux/irq.h>
+#include <linux/input/touchscreen.h>
 #include <linux/interrupt.h>
 #include <linux/of.h>
 #include <asm/unaligned.h>
@@ -33,6 +34,8 @@ struct wacom_features {
 struct wacom_i2c {
 	struct i2c_client *client;
 	struct input_dev *input;
+	struct touchscreen_properties props;
+	struct wacom_features features;
 	u8 data[WACOM_QUERY_SIZE];
 	bool prox;
 	int tool;
@@ -90,6 +93,7 @@ static irqreturn_t wacom_i2c_irq(int irq, void *dev_id)
 {
 	struct wacom_i2c *wac_i2c = dev_id;
 	struct input_dev *input = wac_i2c->input;
+	struct wacom_features *features = &wac_i2c->features;
 	u8 *data = wac_i2c->data;
 	unsigned int x, y, pressure;
 	unsigned char tsw, f1, f2, ers;
@@ -114,6 +118,8 @@ static irqreturn_t wacom_i2c_irq(int irq, void *dev_id)
 
 	wac_i2c->prox = data[3] & 0x20;
 
+	touchscreen_report_pos(input, &wac_i2c->props, features->x_max,
+			       features->y_max, true);
 	input_report_key(input, BTN_TOUCH, tsw || ers);
 	input_report_key(input, wac_i2c->tool, wac_i2c->prox);
 	input_report_key(input, BTN_STYLUS, f1);
@@ -151,7 +157,7 @@ static int wacom_i2c_probe(struct i2c_client *client,
 	struct device *dev = &client->dev;
 	struct wacom_i2c *wac_i2c;
 	struct input_dev *input;
-	struct wacom_features features = { 0 };
+	struct wacom_features *features;
 	int error;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
@@ -159,14 +165,15 @@ static int wacom_i2c_probe(struct i2c_client *client,
 		return -EIO;
 	}
 
-	error = wacom_query_device(client, &features);
-	if (error)
-		return error;
-
 	wac_i2c = devm_kzalloc(dev, sizeof(*wac_i2c), GFP_KERNEL);
 	if (!wac_i2c)
 		return -ENOMEM;
 
+	features = &wac_i2c->features;
+	error = wacom_query_device(client, features);
+	if (error)
+		return error;
+
 	wac_i2c->client = client;
 
 	input = devm_input_allocate_device(dev);
@@ -178,7 +185,7 @@ static int wacom_i2c_probe(struct i2c_client *client,
 	input->name = "Wacom I2C Digitizer";
 	input->id.bustype = BUS_I2C;
 	input->id.vendor = 0x56a;
-	input->id.version = features.fw_version;
+	input->id.version = features->fw_version;
 	input->open = wacom_i2c_open;
 	input->close = wacom_i2c_close;
 
@@ -190,10 +197,11 @@ static int wacom_i2c_probe(struct i2c_client *client,
 	__set_bit(BTN_STYLUS2, input->keybit);
 	__set_bit(BTN_TOUCH, input->keybit);
 
-	input_set_abs_params(input, ABS_X, 0, features.x_max, 0, 0);
-	input_set_abs_params(input, ABS_Y, 0, features.y_max, 0, 0);
+	touchscreen_parse_properties(input, true, &wac_i2c->props);
+	input_set_abs_params(input, ABS_X, 0, features->x_max, 0, 0);
+	input_set_abs_params(input, ABS_Y, 0, features->y_max, 0, 0);
 	input_set_abs_params(input, ABS_PRESSURE,
-			     0, features.pressure_max, 0, 0);
+			     0, features->pressure_max, 0, 0);
 
 	input_set_drvdata(input, wac_i2c);
 
-- 
2.31.1