diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0581-input-edt-ft5x06-Handle-unreliable-TOUCH_UP-events.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0581-input-edt-ft5x06-Handle-unreliable-TOUCH_UP-events.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0581-input-edt-ft5x06-Handle-unreliable-TOUCH_UP-events.patch b/target/linux/bcm27xx/patches-5.15/950-0581-input-edt-ft5x06-Handle-unreliable-TOUCH_UP-events.patch new file mode 100644 index 0000000000..c011caebe7 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0581-input-edt-ft5x06-Handle-unreliable-TOUCH_UP-events.patch @@ -0,0 +1,63 @@ +From 7b658b57d05317656fec750eca1094049de41c76 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Fri, 26 Nov 2021 14:37:40 +0000 +Subject: [PATCH] input: edt-ft5x06: Handle unreliable TOUCH_UP events + +The ft5x06 is unreliable in sending touch up events, so some +touch IDs can become stuck in the detected state. + +Ensure that IDs that are unreported by the controller are +released. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/input/touchscreen/edt-ft5x06.c | 21 ++++++++++++++++++++- + 1 file changed, 20 insertions(+), 1 deletion(-) + +--- a/drivers/input/touchscreen/edt-ft5x06.c ++++ b/drivers/input/touchscreen/edt-ft5x06.c +@@ -127,6 +127,7 @@ struct edt_ft5x06_ts_data { + int offset_y; + int report_rate; + int max_support_points; ++ unsigned int known_ids; + + char name[EDT_NAME_LEN]; + +@@ -201,6 +202,9 @@ static irqreturn_t edt_ft5x06_ts_isr(int + int i, type, x, y, id; + int offset, tplen, datalen, crclen; + int error; ++ unsigned int active_ids = 0, known_ids = tsdata->known_ids; ++ long released_ids; ++ int b = 0; + + switch (tsdata->version) { + case EDT_M06: +@@ -272,10 +276,25 @@ static irqreturn_t edt_ft5x06_ts_isr(int + + input_mt_slot(tsdata->input, id); + if (input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER, +- type != TOUCH_EVENT_UP)) ++ type != TOUCH_EVENT_UP)) { + touchscreen_report_pos(tsdata->input, &tsdata->prop, + x, y, true); ++ active_ids |= BIT(id); ++ } else { ++ known_ids &= ~BIT(id); ++ } ++ } ++ ++ /* One issue with the device is the TOUCH_UP message is not always ++ * returned. Instead track which ids we know about and report when they ++ * are no longer updated ++ */ ++ released_ids = known_ids & ~active_ids; ++ for_each_set_bit_from(b, &released_ids, tsdata->max_support_points) { ++ input_mt_slot(tsdata->input, b); ++ input_mt_report_slot_inactive(tsdata->input); + } ++ tsdata->known_ids = active_ids; + + input_mt_report_pointer_emulation(tsdata->input, true); + input_sync(tsdata->input); |