All of lore.kernel.org
 help / color / mirror / Atom feed
From: Alistair Francis <alistair@alistair23.me>
To: dmitry.torokhov@gmail.com, linux-input@vger.kernel.org,
	linux-imx@nxp.com, kernel@pengutronix.d, pinglinux@gmail.com,
	tatsunosuke.tobita@wacom.com, junkpainting@gmail.com,
	ping.cheng@wacom.com
Cc: linux-kernel@vger.kernel.org, alistair23@gmail.com,
	Alistair Francis <alistair@alistair23.me>
Subject: [PATCH v6 5/9] Input: wacom_i2c - Add support for distance and tilt x/y
Date: Tue, 15 Jun 2021 20:30:10 +1000	[thread overview]
Message-ID: <20210615103014.798-6-alistair@alistair23.me> (raw)
In-Reply-To: <20210615103014.798-1-alistair@alistair23.me>

This is based on the out of tree rM2 driver.

Signed-off-by: Alistair Francis <alistair@alistair23.me>
---
 drivers/input/touchscreen/wacom_i2c.c | 34 +++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/drivers/input/touchscreen/wacom_i2c.c b/drivers/input/touchscreen/wacom_i2c.c
index b47bc08efdd1..e2449a4fa2e3 100644
--- a/drivers/input/touchscreen/wacom_i2c.c
+++ b/drivers/input/touchscreen/wacom_i2c.c
@@ -22,12 +22,18 @@
 #define WACOM_CMD_QUERY3	0x02
 #define WACOM_CMD_THROW0	0x05
 #define WACOM_CMD_THROW1	0x00
-#define WACOM_QUERY_SIZE	19
+#define WACOM_QUERY_SIZE	22
+
+#define WACOM_DISTANCE_TILT_VERSION	0x30
 
 struct wacom_features {
 	int x_max;
 	int y_max;
 	int pressure_max;
+	int distance_max;
+	int distance_physical_max;
+	int tilt_x_max;
+	int tilt_y_max;
 	char fw_version;
 };
 
@@ -80,6 +86,17 @@ static int wacom_query_device(struct i2c_client *client,
 	features->y_max = get_unaligned_le16(&data[5]);
 	features->pressure_max = get_unaligned_le16(&data[11]);
 	features->fw_version = get_unaligned_le16(&data[13]);
+	if (features->fw_version >= WACOM_DISTANCE_TILT_VERSION) {
+		features->distance_max = data[15];
+		features->distance_physical_max = data[16];
+		features->tilt_x_max = get_unaligned_le16(&data[17]);
+		features->tilt_y_max = get_unaligned_le16(&data[19]);
+	} else {
+		features->distance_max = -1;
+		features->distance_physical_max = -1;
+		features->tilt_x_max = -1;
+		features->tilt_y_max = -1;
+	}
 
 	dev_dbg(&client->dev,
 		"x_max:%d, y_max:%d, pressure:%d, fw:%d\n",
@@ -97,6 +114,7 @@ static irqreturn_t wacom_i2c_irq(int irq, void *dev_id)
 	u8 *data = wac_i2c->data;
 	unsigned int x, y, pressure;
 	unsigned char tsw, f1, f2, ers;
+	short tilt_x, tilt_y, distance;
 	int error;
 
 	error = i2c_master_recv(wac_i2c->client,
@@ -111,6 +129,11 @@ static irqreturn_t wacom_i2c_irq(int irq, void *dev_id)
 	x = le16_to_cpup((__le16 *)&data[4]);
 	y = le16_to_cpup((__le16 *)&data[6]);
 	pressure = le16_to_cpup((__le16 *)&data[8]);
+	distance = data[10];
+
+	/* Signed */
+	tilt_x = le16_to_cpup((__le16 *)&data[11]);
+	tilt_y = le16_to_cpup((__le16 *)&data[13]);
 
 	if (!wac_i2c->prox)
 		wac_i2c->tool = (data[3] & 0x0c) ?
@@ -125,6 +148,9 @@ static irqreturn_t wacom_i2c_irq(int irq, void *dev_id)
 	input_report_key(input, BTN_STYLUS, f1);
 	input_report_key(input, BTN_STYLUS2, f2);
 	input_report_abs(input, ABS_PRESSURE, pressure);
+	input_report_abs(input, ABS_DISTANCE, distance);
+	input_report_abs(input, ABS_TILT_X, tilt_x);
+	input_report_abs(input, ABS_TILT_Y, tilt_y);
 	input_sync(input);
 
 out:
@@ -200,7 +226,11 @@ static int wacom_i2c_probe(struct i2c_client *client,
 	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);
-
+	input_set_abs_params(input, ABS_DISTANCE, 0, features->distance_max, 0, 0);
+	input_set_abs_params(input, ABS_TILT_X, -features->tilt_x_max,
+			     features->tilt_x_max, 0, 0);
+	input_set_abs_params(input, ABS_TILT_Y, -features->tilt_y_max,
+			     features->tilt_y_max, 0, 0);
 	input_set_drvdata(input, wac_i2c);
 
 	error = devm_request_threaded_irq(dev, client->irq, NULL, wacom_i2c_irq,
-- 
2.31.1


  parent reply	other threads:[~2021-06-15 10:31 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-15 10:30 [PATCH v6 0/9] Add Wacom I2C support to rM2 Alistair Francis
2021-06-15 10:30 ` [PATCH v6 1/9] dt-bindings: Add Wacom to vendor bindings Alistair Francis
2021-06-15 16:50   ` Dmitry Torokhov
2021-06-15 10:30 ` [PATCH v6 2/9] dt-bindings: touchscreen: Initial commit of wacom,generic Alistair Francis
2021-06-15 16:54   ` Dmitry Torokhov
2021-06-15 10:30 ` [PATCH v6 3/9] Input: wacom_i2c - Add device tree support to wacom_i2c Alistair Francis
2021-06-15 16:55   ` Dmitry Torokhov
2021-06-15 21:19     ` Alistair Francis
2021-06-15 10:30 ` [PATCH v6 4/9] Input: wacom_i2c - Add touchscren properties Alistair Francis
2021-06-15 10:30 ` Alistair Francis [this message]
2021-06-15 10:30 ` [PATCH v6 6/9] Input: wacom_i2c - Clean up the query device fields Alistair Francis
2021-06-15 10:30 ` [PATCH v6 7/9] Input: wacom_i2c - Add support for vdd regulator Alistair Francis
2021-06-15 10:30 ` [PATCH v6 8/9] ARM: imx_v6_v7_defconfig: Enable Wacom I2C Alistair Francis
2021-06-15 10:30 ` [PATCH v6 9/9] ARM: dts: imx7d: remarkable2: add wacom digitizer device Alistair Francis

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210615103014.798-6-alistair@alistair23.me \
    --to=alistair@alistair23.me \
    --cc=alistair23@gmail.com \
    --cc=dmitry.torokhov@gmail.com \
    --cc=junkpainting@gmail.com \
    --cc=kernel@pengutronix.d \
    --cc=linux-imx@nxp.com \
    --cc=linux-input@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=ping.cheng@wacom.com \
    --cc=pinglinux@gmail.com \
    --cc=tatsunosuke.tobita@wacom.com \
    --subject='Re: [PATCH v6 5/9] Input: wacom_i2c - Add support for distance and tilt x/y' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.