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HID: magicmouse: remove timestamp logic

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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>
This commit is contained in:
Chase Douglas 2010-09-02 16:51:54 +02:00 committed by Jiri Kosina
parent 0228db70ce
commit c61b7cee67
1 changed files with 7 additions and 11 deletions
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18
drivers/hid/hid-magicmouse.c
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@ -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.