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| author | Michael Bestas <mkbestas@lineageos.org> | 2020-12-30 23:59:22 +0200 |
|---|---|---|
| committer | Michael Bestas <mkbestas@lineageos.org> | 2020-12-30 23:59:22 +0200 |
| commit | 8bca2095c58bfc17532ab9a6259d341decee1288 (patch) | |
| tree | 6d6fe55982d5b77d369095408ab60797bf9ed4cb /drivers/input/touchscreen/ads7846.c | |
| parent | 96d93de231c6f2e261efe1307c0e9d23d62f3075 (diff) | |
| parent | 300d539b8e6e297ffd986afec63a88415eced57d (diff) | |
Merge branch 'android-4.4-p' of https://android.googlesource.com/kernel/common into lineage-18.1-caf-msm8998
This brings LA.UM.9.2.r1-01800-SDMxx0.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
300d539b8e6e2 ANDROID: usb: f_accessory: Wrap '_acc_dev' in get()/put() accessors
Conflicts:
drivers/usb/gadget/function/f_accessory.c
include/linux/spi/spi.h
Change-Id: Ifef5bfcb9d92b6d560126f0216369c567476f55d
Diffstat (limited to 'drivers/input/touchscreen/ads7846.c')
| -rw-r--r-- | drivers/input/touchscreen/ads7846.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index a61b2153ab8c..1d98198c4bdf 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -35,6 +35,7 @@ #include <linux/regulator/consumer.h> #include <linux/module.h> #include <asm/irq.h> +#include <asm/unaligned.h> /* * This code has been heavily tested on a Nokia 770, and lightly @@ -410,7 +411,7 @@ static int ads7845_read12_ser(struct device *dev, unsigned command) if (status == 0) { /* BE12 value, then padding */ - status = be16_to_cpu(*((u16 *)&req->sample[1])); + status = get_unaligned_be16(&req->sample[1]); status = status >> 3; status &= 0x0fff; } @@ -785,10 +786,11 @@ static void ads7846_report_state(struct ads7846 *ts) /* compute touch pressure resistance using equation #2 */ Rt = z2; Rt -= z1; - Rt *= x; Rt *= ts->x_plate_ohms; + Rt = DIV_ROUND_CLOSEST(Rt, 16); + Rt *= x; Rt /= z1; - Rt = (Rt + 2047) >> 12; + Rt = DIV_ROUND_CLOSEST(Rt, 256); } else { Rt = 0; } |