diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0589-input-edt-ft5x06-Only-look-at-the-number-of-points-r.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0589-input-edt-ft5x06-Only-look-at-the-number-of-points-r.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0589-input-edt-ft5x06-Only-look-at-the-number-of-points-r.patch b/target/linux/bcm27xx/patches-5.15/950-0589-input-edt-ft5x06-Only-look-at-the-number-of-points-r.patch new file mode 100644 index 0000000000..2123041a47 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0589-input-edt-ft5x06-Only-look-at-the-number-of-points-r.patch @@ -0,0 +1,44 @@ +From 066255aaae527ace73f85d698a6668a752785d1c Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Tue, 30 Nov 2021 17:28:50 +0000 +Subject: [PATCH] input: edt-ft5x06: Only look at the number of points + reported + +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> +--- + drivers/input/touchscreen/edt-ft5x06.c | 9 ++++++++- + 1 file changed, 8 insertions(+), 1 deletion(-) + +--- a/drivers/input/touchscreen/edt-ft5x06.c ++++ b/drivers/input/touchscreen/edt-ft5x06.c +@@ -205,6 +205,7 @@ static irqreturn_t edt_ft5x06_ts_isr(int + 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: +@@ -252,9 +253,15 @@ static irqreturn_t edt_ft5x06_ts_isr(int + + 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; |