raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 01:49:46 +00:00
Code Issues Projects Releases Wiki Activity

input: edt-ft5x06: Only look at the number of points reported

Browse Source 
Register 0x02 in the FT5x06 is TD_STATUS containing the number
of valid touch points being reported.

Iterate over that number of points rather than all that are
supported on the device.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This commit is contained in:
Dave Stevenson
2021-11-30 17:28:50 +00:00
committed by Dom Cobley
parent 43e6344cd3
commit df14e9c81d
1 changed files with 8 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/input/touchscreen/edt-ft5x06.c
View File

@@ -212,6 +212,7 @@ static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
unsigned int active_ids = 0, known_ids = tsdata->known_ids;
long released_ids;
int b = 0;
unsigned int num_points;
switch (tsdata->version) {
case EDT_M06:
@@ -260,9 +261,15 @@ static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id)
if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, datalen))
goto out;
num_points = tsdata->max_support_points;
} else {
/* Register 2 is TD_STATUS, containing the number of touch
* points.
*/
num_points = min(rdbuf[2] & 0xf, tsdata->max_support_points);
}
for (i = 0; i < tsdata->max_support_points; i++) {
for (i = 0; i < num_points; i++) {
u8 *buf = &rdbuf[i * tplen + offset];
type = buf[0] >> 6;