diff mbox series

[2/3] Input: ektf2127 - Add support for eKTF2132 touchscreen

Message ID 20201106112412.390724-3-j.neuschaefer@gmx.net (mailing list archive)
State New, archived
Headers show
Series Support for ELAN eKTF2132 touchscreens | expand

Commit Message

J. Neuschäfer Nov. 6, 2020, 11:24 a.m. UTC 
The eKTF2132 is a touchscreen controller found, for example, in the Kobo
Aura ebook reader. It is similar to the ektf2127, but it uses a different
packet type to report touch events.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---
 drivers/input/touchscreen/ektf2127.c | 32 +++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

--
2.28.0

Comments

Dmitry Torokhov Nov. 9, 2020, 2:30 a.m. UTC | #1 
On Fri, Nov 06, 2020 at 12:24:11PM +0100, Jonathan Neuschäfer wrote:
> The eKTF2132 is a touchscreen controller found, for example, in the Kobo
> Aura ebook reader. It is similar to the ektf2127, but it uses a different
> packet type to report touch events.
> 
> Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>

Applied, thank you.
diff mbox series

Patch

diff --git a/drivers/input/touchscreen/ektf2127.c b/drivers/input/touchscreen/ektf2127.c
index eadd389cf81fe..491de67ddbcd7 100644
--- a/drivers/input/touchscreen/ektf2127.c
+++ b/drivers/input/touchscreen/ektf2127.c
@@ -28,6 +28,7 @@ 
 #define EKTF2127_RESPONSE		0x52
 #define EKTF2127_REQUEST		0x53
 #define EKTF2127_HELLO			0x55
+#define EKTF2127_REPORT2		0x5a
 #define EKTF2127_REPORT			0x5d
 #define EKTF2127_CALIB_DONE		0x66

@@ -95,6 +96,29 @@  static void ektf2127_report_event(struct ektf2127_ts *ts, const u8 *buf)
 	input_sync(ts->input);
 }

+static void ektf2127_report2_contact(struct ektf2127_ts *ts, int slot,
+				     const u8 *buf, bool active)
+{
+	input_mt_slot(ts->input, slot);
+	input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, active);
+
+	if (active) {
+		int x = (buf[0] & 0xf0) << 4 | buf[1];
+		int y = (buf[0] & 0x0f) << 8 | buf[2];
+
+		touchscreen_report_pos(ts->input, &ts->prop, x, y, true);
+	}
+}
+
+static void ektf2127_report2_event(struct ektf2127_ts *ts, const u8 *buf)
+{
+	ektf2127_report2_contact(ts, 0, &buf[1], !!(buf[7] & 2));
+	ektf2127_report2_contact(ts, 1, &buf[4], !!(buf[7] & 4));
+
+	input_mt_sync_frame(ts->input);
+	input_sync(ts->input);
+}
+
 static irqreturn_t ektf2127_irq(int irq, void *dev_id)
 {
 	struct ektf2127_ts *ts = dev_id;
@@ -113,6 +137,10 @@  static irqreturn_t ektf2127_irq(int irq, void *dev_id)
 		ektf2127_report_event(ts, buf);
 		break;

+	case EKTF2127_REPORT2:
+		ektf2127_report2_event(ts, buf);
+		break;
+
 	case EKTF2127_NOISE:
 		if (buf[1] == EKTF2127_ENV_NOISY)
 			dev_dbg(dev, "Environment is electrically noisy\n");
@@ -305,6 +333,7 @@  static int ektf2127_probe(struct i2c_client *client,
 #ifdef CONFIG_OF
 static const struct of_device_id ektf2127_of_match[] = {
 	{ .compatible = "elan,ektf2127" },
+	{ .compatible = "elan,ektf2132" },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ektf2127_of_match);
@@ -312,6 +341,7 @@  MODULE_DEVICE_TABLE(of, ektf2127_of_match);

 static const struct i2c_device_id ektf2127_i2c_id[] = {
 	{ "ektf2127", 0 },
+	{ "ektf2132", 0 },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, ektf2127_i2c_id);
@@ -327,6 +357,6 @@  static struct i2c_driver ektf2127_driver = {
 };
 module_i2c_driver(ektf2127_driver);

-MODULE_DESCRIPTION("ELAN eKTF2127 I2C Touchscreen Driver");
+MODULE_DESCRIPTION("ELAN eKTF2127/eKTF2132 I2C Touchscreen Driver");
 MODULE_AUTHOR("Michel Verlaan, Siebren Vroegindeweij");
 MODULE_LICENSE("GPL");