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Input: cy8ctmg110_ts - use endian helpers when converting data on wire

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Switch to using be16_to_cpup() instead of shifting and combining data by
hand.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210603043726.3793876-5-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2021-06-05 17:05:29 -07:00
parent 172b07a6ea
commit 1c68b7cfd1
1 changed files with 5 additions and 6 deletions
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11
drivers/input/touchscreen/cy8ctmg110_ts.c
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@ -16,6 +16,7 @@
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/input/cy8ctmg110_pdata.h>
#include <asm/byteorder.h>
#define CY8CTMG110_DRIVER_NAME "cy8ctmg110"
@ -111,7 +112,6 @@ static int cy8ctmg110_touch_pos(struct cy8ctmg110 *tsc)
{
struct input_dev *input = tsc->input;
unsigned char reg_p[CY8CTMG110_REG_MAX];
int x, y;
memset(reg_p, 0, CY8CTMG110_REG_MAX);
@ -119,16 +119,15 @@ static int cy8ctmg110_touch_pos(struct cy8ctmg110 *tsc)
if (cy8ctmg110_read_regs(tsc, reg_p, 9, CY8CTMG110_TOUCH_X1) != 0)
return -EIO;
y = reg_p[2] << 8 | reg_p[3];
x = reg_p[0] << 8 | reg_p[1];
/* Number of touch */
if (reg_p[8] == 0) {
input_report_key(input, BTN_TOUCH, 0);
} else {
input_report_key(input, BTN_TOUCH, 1);
input_report_abs(input, ABS_X, x);
input_report_abs(input, ABS_Y, y);
input_report_abs(input, ABS_X,
be16_to_cpup((__be16 *)(reg_p + 0)));
input_report_abs(input, ABS_Y,
be16_to_cpup((__be16 *)(reg_p + 2)));
}
input_sync(input);