diff options
Diffstat (limited to '0011-Input-goodix-Add-support-for-capacitive-home-button.patch')
| -rw-r--r-- | 0011-Input-goodix-Add-support-for-capacitive-home-button.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/0011-Input-goodix-Add-support-for-capacitive-home-button.patch b/0011-Input-goodix-Add-support-for-capacitive-home-button.patch new file mode 100644 index 000000000..162357c21 --- /dev/null +++ b/0011-Input-goodix-Add-support-for-capacitive-home-button.patch @@ -0,0 +1,53 @@ +From 2a99775c336303d2efc43eab4f24b34722a28faa Mon Sep 17 00:00:00 2001 +From: "Sergei A. Trusov" <sergei.a.trusov@ya.ru> +Date: Tue, 20 Jun 2017 18:08:35 +0200 +Subject: [PATCH 11/16] Input: goodix: Add support for capacitive home button + +On some x86 tablets with a Goodix touchscreen, the Windows logo on the +front is a capacitive home button. Touching this button results in a touch +with bit 4 of the first byte set, while only the lower 4 bits (0-3) are +used to indicate the number of touches. + +Report a KEY_LEFTMETA press when this happens. + +Note that the hardware might support more than one button, in which +case the "id" byte of coor_data would identify the button in question. +This is not implemented as we don't have access to hardware with +multiple buttons. + +Signed-off-by: Sergei A. Trusov <sergei.a.trusov@ya.ru> +Acked-by: Bastien Nocera <hadess@hadess.net> +--- + drivers/input/touchscreen/goodix.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c +index 240b16f3ee97..903137d9cf7d 100644 +--- a/drivers/input/touchscreen/goodix.c ++++ b/drivers/input/touchscreen/goodix.c +@@ -267,6 +267,12 @@ static void goodix_process_events(struct goodix_ts_data *ts) + if (touch_num < 0) + return; + ++ /* ++ * Bit 4 of the first byte reports the status of the capacitive ++ * Windows/Home button. ++ */ ++ input_report_key(ts->input_dev, KEY_LEFTMETA, !!(point_data[0] & BIT(4))); ++ + for (i = 0; i < touch_num; i++) + goodix_ts_report_touch(ts, + &point_data[1 + GOODIX_CONTACT_SIZE * i]); +@@ -612,6 +618,9 @@ static int goodix_request_input_dev(struct goodix_ts_data *ts) + ts->input_dev->id.product = ts->id; + ts->input_dev->id.version = ts->version; + ++ /* Capacitive Windows/Home button on some devices */ ++ input_set_capability(ts->input_dev, EV_KEY, KEY_LEFTMETA); ++ + error = input_register_device(ts->input_dev); + if (error) { + dev_err(&ts->client->dev, +-- +2.13.0 + |