diff options
| author | Jonathan Neuschäfer <j.neuschaefer@gmx.net> | 2020-11-08 18:30:08 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2020-11-08 18:34:02 -0800 |
| commit | af5689fb5c1c0b5ad8d6bfd79ea7d018b4c16f1d (patch) | |
| tree | da408a0aa5ec5195b9f62c81f6e4cf6597b7a018 /drivers/input/touchscreen/ektf2127.c | |
| parent | cdab490e50e7ce4533b95ca24c90bee3ed1a8e99 (diff) | |
Input: ektf2127 - add support for eKTF2132 touchscreen
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>
Link: https://lore.kernel.org/r/20201106112412.390724-3-j.neuschaefer@gmx.net
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen/ektf2127.c')
| -rw-r--r-- | drivers/input/touchscreen/ektf2127.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/drivers/input/touchscreen/ektf2127.c b/drivers/input/touchscreen/ektf2127.c index eadd389cf81f..491de67ddbcd 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"); |