From 9846f350ef4d4108c1154acfc125fe8d8630ef84 Mon Sep 17 00:00:00 2001 From: Chase Douglas Date: Wed, 2 Jun 2010 10:28:27 -0400 Subject: [PATCH] HID: magicmouse: disable and add module param for scroll acceleration Scroll acceleration is unique to the magicmouse driver, and is unintuitive to a user who is unaware of the functionality. Thus, disable it by default, but add a module parameter to enable it for power users who want it. Signed-off-by: Chase Douglas Acked-by: Michael Poole Signed-off-by: Jiri Kosina --- drivers/hid/hid-magicmouse.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c index cd706354496a..4c4a79c760a2 100644 --- a/drivers/hid/hid-magicmouse.c +++ b/drivers/hid/hid-magicmouse.c @@ -30,6 +30,10 @@ static bool emulate_scroll_wheel = true; module_param(emulate_scroll_wheel, bool, 0644); MODULE_PARM_DESC(emulate_scroll_wheel, "Emulate a scroll wheel"); +static bool scroll_acceleration = false; +module_param(scroll_acceleration, bool, 0644); +MODULE_PARM_DESC(scroll_acceleration, "Accelerate sequential scroll events"); + static bool report_touches = true; module_param(report_touches, bool, 0644); MODULE_PARM_DESC(report_touches, "Emit touch records (otherwise, only use them for emulation)"); @@ -177,7 +181,9 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda switch (tdata[7] & TOUCH_STATE_MASK) { case TOUCH_STATE_START: msc->touches[id].scroll_y = y; - msc->scroll_accel = min_t(int, msc->scroll_accel + 1, + if (scroll_acceleration) + msc->scroll_accel = min_t(int, + msc->scroll_accel + 1, ARRAY_SIZE(accel_profile) - 1); break; case TOUCH_STATE_DRAG: -- 2.39.5