HID: hid-input: Add digitizer tilt usage support

Add digitizer X Tilt and Y Tilt usage support along with resolution calculation.

Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 002781c5a6164040e90a6a5bab40ed982e50b508..22d8ce6d5a597d18e54172add34a46cabdd3d7ac 100644 (file)
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -225,7 +225,10 @@ static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
         * Verify and convert units.
         * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
         */
-       if (code == ABS_X || code == ABS_Y || code == ABS_Z) {
+       switch (code) {
+       case ABS_X:
+       case ABS_Y:
+       case ABS_Z:
                if (field->unit == 0x11) {              /* If centimeters */
                        /* Convert to millimeters */
                        unit_exponent += 1;
@@ -239,7 +242,13 @@ static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
                } else {
                        return 0;
                }
-       } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) {
+               break;
+
+       case ABS_RX:
+       case ABS_RY:
+       case ABS_RZ:
+       case ABS_TILT_X:
+       case ABS_TILT_Y:
                if (field->unit == 0x14) {              /* If degrees */
                        /* Convert to radians */
                        prev = logical_extents;
@@ -250,7 +259,9 @@ static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
                } else if (field->unit != 0x12) {       /* If not radians */
                        return 0;
                }
-       } else {
+               break;
+
+       default:
                return 0;
        }
 
@@ -623,6 +634,14 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
                        map_key_clear(BTN_TOOL_RUBBER);
                        break;
 
+               case 0x3d: /* X Tilt */
+                       map_abs_clear(ABS_TILT_X);
+                       break;
+
+               case 0x3e: /* Y Tilt */
+                       map_abs_clear(ABS_TILT_Y);
+                       break;
+
                case 0x33: /* Touch */
                case 0x42: /* TipSwitch */
                case 0x43: /* TipSwitch2 */