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authorChase Douglas <chase.douglas@ubuntu.com>2010-09-02 16:51:54 +0200
committerJiri Kosina <jkosina@suse.cz>2010-09-02 16:51:54 +0200
commitc61b7cee672cc7276619ac0edf8f426e2f9e63e9 (patch)
treeb8d827b126d3d39072d227c1ae1103f8a2d1cb00 /drivers/hid/hid-magicmouse.c
parent0228db70ce6afdcd14164ab8d18137fa319c76e8 (diff)
downloadlinux-c61b7cee672cc7276619ac0edf8f426e2f9e63e9.tar.bz2
HID: magicmouse: remove timestamp logic
The timestamps from the device are currently stored in the private data structure. These aren't used, so remove them. I've left a comment detailing the protocol for future reference. Signed-off-by: Chase Douglas <chase.douglas@canonical.com> Acked-by: Michael Poole <mdpoole@troilus.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-magicmouse.c')
-rw-r--r--drivers/hid/hid-magicmouse.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
index b74abf202e01..945850b42bc1 100644
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -71,11 +71,6 @@ MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state fie
* struct magicmouse_sc - Tracks Magic Mouse-specific data.
* @input: Input device through which we report events.
* @quirks: Currently unused.
- * @last_timestamp: Timestamp from most recent (18-bit) touch report
- * (units of milliseconds over short windows, but seems to
- * increase faster when there are no touches).
- * @delta_time: 18-bit difference between the two most recent touch
- * reports from the mouse.
* @ntouches: Number of touches in most recent touch report.
* @scroll_accel: Number of consecutive scroll motions.
* @scroll_jiffies: Time of last scroll motion.
@@ -86,8 +81,6 @@ struct magicmouse_sc {
struct input_dev *input;
unsigned long quirks;
- int last_timestamp;
- int delta_time;
int ntouches;
int scroll_accel;
unsigned long scroll_jiffies;
@@ -247,7 +240,7 @@ static int magicmouse_raw_event(struct hid_device *hdev,
{
struct magicmouse_sc *msc = hid_get_drvdata(hdev);
struct input_dev *input = msc->input;
- int x, y, ts, ii, clicks, npoints;
+ int x, y, ii, clicks, npoints;
switch (data[0]) {
case 0x10:
@@ -261,9 +254,6 @@ static int magicmouse_raw_event(struct hid_device *hdev,
/* Expect six bytes of prefix, and N*8 bytes of touch data. */
if (size < 6 || ((size - 6) % 8) != 0)
return 0;
- ts = data[3] >> 6 | data[4] << 2 | data[5] << 10;
- msc->delta_time = (ts - msc->last_timestamp) & 0x3ffff;
- msc->last_timestamp = ts;
npoints = (size - 6) / 8;
msc->ntouches = 0;
for (ii = 0; ii < npoints; ii++)
@@ -279,6 +269,12 @@ static int magicmouse_raw_event(struct hid_device *hdev,
x = (int)(((data[3] & 0x0c) << 28) | (data[1] << 22)) >> 22;
y = (int)(((data[3] & 0x30) << 26) | (data[2] << 22)) >> 22;
clicks = data[3];
+
+ /* The following bits provide a device specific timestamp. They
+ * are unused here.
+ *
+ * ts = data[3] >> 6 | data[4] << 2 | data[5] << 10;
+ */
break;
case 0x20: /* Theoretically battery status (0-100), but I have
* never seen it -- maybe it is only upon request.