linux-toradex.git/drivers/hid/hid-wiimote.c, branch v3.2.23

HID: wiimote: Fix IR data parser

2012-05-30T23:43:38+00:00

commit 74b89e8a3625c17c7452532dfb997ac4f1a38751 upstream.

We incorrectly parse incoming IR data. The extra byte contains the upper
bits and not the lower bits of the x/y coordinates. User-space expects
absolute position data from us so this patch does not break existing
applications. On the contrary, it extends the virtual view and fixes
garbage reports for margin areas of the virtual screen.

Reported-by: Peter Bukovsky 
Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina 
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings

HID: wiimote: Add MAINTAINERS entry

2011-09-07T11:25:18+00:00

Add entry to MAINTAINERS and also bump version level as the core driver is
feature complete now.

Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina

HID: wiimote: Read wiimote battery charge level

2011-09-07T11:25:18+00:00

This registers a power_supply device for every remote to retrieve the current
battery charge level. Since this information is not sent by the wiimote
continously, we need to explicitely request it.

Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina

HID: wiimote: Add status request

2011-09-07T11:25:18+00:00

The wiimote does not send status reports continuously so this adds a helper
function to request a status report and parses the battery charge level.

Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina

HID: wiimote: Initialize IR cam on request

2011-09-07T11:25:17+00:00

Initialize the IR cam if the related input device is opened by userspace. Stop
IR cam again if userspace is no longer interested in its data events.

Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina

HID: wiimote: Add IR initializer

2011-09-07T11:25:17+00:00

The wiimote IR cam needs a fairly complex initialization sequence. This adds a
helper function that performs IR initialization synchronously.

Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina

HID: wiimote: Add write-register helpers

2011-09-07T11:25:17+00:00

Add helpers to synchronously write registers of the wiimote. This is heavily
used by initialization functions for wiimote peripherals.

Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina

HID: wiimote: Helper functions for synchronous requests

2011-09-07T11:25:17+00:00

To initialize wiimote peripherals, the stream to the wiimote must be held
exclusively by the initializer, otherwise the initialization will fail. Many
initializations require multiple memory requests to be sent synchronously so we
need a way to lock the stream and release it when we are done.

This adds several helper functions which allow to lock the stream, then send
requests, wait for the answers and release the stream again.

When holding the lock, the function may sleep and interrupted by signals.
Also it returns after a short timeout so userspace shouldn't notice long
delays.

Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina

HID: wiimote: Add register/eeprom memory support

2011-09-07T11:25:16+00:00

The wiimote allows direct access to its memory mapped registers and
internal eeprom. This adds support to access this memory and handle
memory events.

There are two macros which wrap up the memory access functions to avoid
accidentally overwriting sensitive eeprom data because a boolean value
was wrongly set.

Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina

HID: wiimote: Add missing extension DRM handlers

2011-09-07T11:25:16+00:00

If an extension is connected the wiimote may report data though DRMs that
contain extension data. This adds handlers for these DRMs but discards extension
data since we do not support it, yet.
It prints a warning to kernel log if an unhandled report is catched. Since we
handle all requests now, this should never happen, though.

Signed-off-by: David Herrmann 
Signed-off-by: Jiri Kosina