@@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/bitfield.h>
#include <linux/bits.h>
#include <linux/delay.h>
#include <linux/i2c.h>
@@ -29,12 +30,9 @@
#define IST3038C_I2C_RETRY_COUNT 3
#define IST3038C_MAX_FINGER_NUM 10
#define IST3038C_X_MASK GENMASK(23, 12)
-#define IST3038C_X_SHIFT 12
#define IST3038C_Y_MASK GENMASK(11, 0)
#define IST3038C_AREA_MASK GENMASK(27, 24)
-#define IST3038C_AREA_SHIFT 24
#define IST3038C_FINGER_COUNT_MASK GENMASK(15, 12)
-#define IST3038C_FINGER_COUNT_SHIFT 12
#define IST3038C_FINGER_STATUS_MASK GENMASK(9, 0)
struct imagis_properties {
@@ -106,8 +104,7 @@ static irqreturn_t imagis_interrupt(int irq, void *dev_id)
goto out;
}
- finger_count = (intr_message & IST3038C_FINGER_COUNT_MASK) >>
- IST3038C_FINGER_COUNT_SHIFT;
+ finger_count = FIELD_GET(IST3038C_FINGER_COUNT_MASK, intr_message);
if (finger_count > IST3038C_MAX_FINGER_NUM) {
dev_err(&ts->client->dev,
"finger count %d is more than maximum supported\n",
@@ -115,7 +112,7 @@ static irqreturn_t imagis_interrupt(int irq, void *dev_id)
goto out;
}
- finger_pressed = intr_message & IST3038C_FINGER_STATUS_MASK;
+ finger_pressed = FIELD_GET(IST3038C_FINGER_STATUS_MASK, intr_message);
for (i = 0; i < finger_count; i++) {
if (ts->tdata->protocol_b)
@@ -136,12 +133,10 @@ static irqreturn_t imagis_interrupt(int irq, void *dev_id)
input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER,
finger_pressed & BIT(i));
touchscreen_report_pos(ts->input_dev, &ts->prop,
- (finger_status & IST3038C_X_MASK) >>
- IST3038C_X_SHIFT,
- finger_status & IST3038C_Y_MASK, 1);
+ FIELD_GET(IST3038C_X_MASK, finger_status),
+ FIELD_GET(IST3038C_Y_MASK, finger_status), 1);
input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR,
- (finger_status & IST3038C_AREA_MASK) >>
- IST3038C_AREA_SHIFT);
+ FIELD_GET(IST3038C_AREA_MASK, finger_status));
}
input_mt_sync_frame(ts->input_dev);
Instead of manually extracting certain bits from registers with binary ANDs and shifts, the FIELD_GET macro can be used. With this in mind, the *_SHIFT macros can be dropped. Signed-off-by: Duje Mihanović <duje.mihanovic@skole.hr> --- drivers/input/touchscreen/imagis.c | 17 ++++++----------- 1 file changed, 6 insertions(+), 11 deletions(-)