diff options
Diffstat (limited to 'drivers/hid/wacom.h')
| -rw-r--r-- | drivers/hid/wacom.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/hid/wacom.h b/drivers/hid/wacom.h index 6f1443999d1d..1deacb4568cb 100644 --- a/drivers/hid/wacom.h +++ b/drivers/hid/wacom.h @@ -218,6 +218,14 @@ static inline __u32 wacom_s32tou(s32 value, __u8 n) return value & (1 << (n - 1)) ? value & (~(~0U << n)) : value; } +static inline u32 wacom_rescale(u32 value, u32 in_max, u32 out_max) +{ + if (in_max == 0 || out_max == 0) + return 0; + value = clamp(value, 0, in_max); + return DIV_ROUND_CLOSEST(value * out_max, in_max); +} + extern const struct hid_device_id wacom_ids[]; void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len); |