summaryrefslogtreecommitdiff
path: root/drivers/input/touchscreen/wacom_i2c.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/input/touchscreen/wacom_i2c.c')
-rw-r--r--drivers/input/touchscreen/wacom_i2c.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/input/touchscreen/wacom_i2c.c b/drivers/input/touchscreen/wacom_i2c.c
index 22826c387da5..fe4ea6204a4e 100644
--- a/drivers/input/touchscreen/wacom_i2c.c
+++ b/drivers/input/touchscreen/wacom_i2c.c
@@ -6,6 +6,7 @@
* <tobita.tatsunosuke@wacom.co.jp>
*/
+#include <linux/bits.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/i2c.h>
@@ -14,6 +15,15 @@
#include <linux/interrupt.h>
#include <asm/unaligned.h>
+/* Bitmasks (for data[3]) */
+#define WACOM_TIP_SWITCH BIT(0)
+#define WACOM_BARREL_SWITCH BIT(1)
+#define WACOM_ERASER BIT(2)
+#define WACOM_INVERT BIT(3)
+#define WACOM_BARREL_SWITCH_2 BIT(4)
+#define WACOM_IN_PROXIMITY BIT(5)
+
+/* Registers */
#define WACOM_CMD_QUERY0 0x04
#define WACOM_CMD_QUERY1 0x00
#define WACOM_CMD_QUERY2 0x33
@@ -99,19 +109,19 @@ static irqreturn_t wacom_i2c_irq(int irq, void *dev_id)
if (error < 0)
goto out;
- tsw = data[3] & 0x01;
- ers = data[3] & 0x04;
- f1 = data[3] & 0x02;
- f2 = data[3] & 0x10;
+ tsw = data[3] & WACOM_TIP_SWITCH;
+ ers = data[3] & WACOM_ERASER;
+ f1 = data[3] & WACOM_BARREL_SWITCH;
+ f2 = data[3] & WACOM_BARREL_SWITCH_2;
x = le16_to_cpup((__le16 *)&data[4]);
y = le16_to_cpup((__le16 *)&data[6]);
pressure = le16_to_cpup((__le16 *)&data[8]);
if (!wac_i2c->prox)
- wac_i2c->tool = (data[3] & 0x0c) ?
+ wac_i2c->tool = (data[3] & (WACOM_ERASER | WACOM_INVERT)) ?
BTN_TOOL_RUBBER : BTN_TOOL_PEN;
- wac_i2c->prox = data[3] & 0x20;
+ wac_i2c->prox = data[3] & WACOM_IN_PROXIMITY;
input_report_key(input, BTN_TOUCH, tsw || ers);
input_report_key(input, wac_i2c->tool, wac_i2c->prox);