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path: root/drivers/hid/hid-input.c
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2014-08-26HID: input: force generic axis to be mapped to their user space axisBenjamin Tissoires1-0/+6
Atmel 840B digitizer presents a stylus interface which reports twice the X coordinate and then twice the Y coordinate. In its current implementation, hid-input assign the first X to X, then the second to Y, then the first Y to Z, then the second one to RX. This is wrong, and X should always be mapped to X, no matter what. A solution consists in forcing X, Y, Z, RX, RY, RZ to be mapped to their correct user space counter part. Reported-by: Éric Brunet <Eric.Brunet@lps.ens.fr> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-06-03HID: core: add two new usages for digitizerPing Cheng1-0/+5
On Feb 17, 2014, two new usages are approved to HID usage Table 18 - Digitizer Page: 5A Secondary Barrel Switch MC 16.4 5B Transducer Serial Number SV 16.3.1 This patch adds relevant definitions to hid/input. It also removes outdated comments in hid.h. Signed-off-by: Ping Cheng <pingc@wacom.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-04-28HID: add missing hid usagesOlivier Gay1-0/+14
Add some missing hid usages from consumer page, add some display brightness control usages from approved hid usage table request HUTTR41: http://www.usb.org/developers/hidpage/HUTRR41.pdf and add voice command usage from approved request HUTTR45: http://www.usb.org/developers/hidpage/Voice_Command_Usage.pdf [jkosina@suse.cz: removed KEY_BRIGHTNESS_TOGGLE / KEY_DISPLAYTOGGLE conflict from hid-debug.c] Signed-off-by: Olivier Gay <ogay@logitech.com> Signed-off-by: Mathieu Meisser <mmeisser@logitech.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-04-01Merge branch 'for-3.15/microsoft' into for-linusJiri Kosina1-0/+3
Conflicts: drivers/hid/hid-core.c
2014-04-01Merge branch 'for-3.15/hid-core-ll-transport-cleanup' into for-linusJiri Kosina1-9/+9
Conflicts: drivers/hid/hid-ids.h drivers/hid/hid-sony.c drivers/hid/i2c-hid/i2c-hid.c
2014-02-24HID: make .raw_request mandatoryBenjamin Tissoires1-3/+1
SET_REPORT and GET_REPORT are mandatory in the HID specification. Make the corresponding API in hid-core mandatory too, which removes the need to test against it in some various places. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-02-24HID: input: hid-input remove hid_output_raw_report callBenjamin Tissoires1-3/+7
hid_output_raw_report() is not a ll_driver callback and should not be used. To keep the same code path than before, we are forced to play with the different hid_hw_* calls: if the usb or i2c device does not support direct output reports, then we will rely on the SET_REPORT HID call. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-02-17HID: introduce helper to access hid_output_raw_report()Benjamin Tissoires1-1/+1
Add a helper to access hdev->hid_output_raw_report(). To convert the drivers, use the following snippets: for i in drivers/hid/*.c do sed -i.bak "s/[^ \t]*->hid_output_raw_report(/hid_output_raw_report(/g" $i done Then manually fix for checkpatch.pl Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-02-17HID: remove hid_get_raw_report in struct hid_deviceBenjamin Tissoires1-3/+3
dev->hid_get_raw_report(X) and hid_hw_raw_request(X, HID_REQ_GET_REPORT) are strictly equivalent. Switch the hid subsystem to the hid_hw notation and remove the field .hid_get_raw_report in struct hid_device. Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-02-17HID: remove hidinput_input_event handlerBenjamin Tissoires1-3/+1
All the different transport drivers use now the generic event handling in hid-input. We can remove the handler definitively now. Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-02-03HID: Add some missing HUT mappingsHans de Goede1-0/+3
Add mapping for "AL Next Task/Application", "AL Previous Task/Application" and "AL File Browser" buttons, as found on the Microsoft Office keyboard. Note that there already is a mapping for "AL Local Machine Browser" to KEY_FILE. Unless we ever encounter a device with both that should not be a problem. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-02-03HID: fix buffer allocationsBenjamin Tissoires1-1/+1
When using hid_output_report(), the buffer should be allocated by hid_alloc_report_buf(), not a custom malloc. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-12-21HID: input: fix input sysfs path for hid devicesBenjamin Tissoires1-1/+1
we used to set the parent of the input device as the parent of the hid bus. This was introduced when we created hid as a real bus, and to keep backward compatibility. Now, it's time to proper set the parent so that sysfs has an idea of which input device is attached to which hid device. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-10-18HID: Fix unit exponent parsing againNikolai Kondrashov1-9/+4
Revert some changes done in 774638386826621c984ab6994439f474709cac5e. Revert all changes done in hidinput_calc_abs_res as it mistakingly used "Unit" item exponent nibbles to affect resolution value. This wasn't breaking resolution calculation of relevant axes of any existing devices, though, as they have only one dimension to their units and thus 1 in the corresponding nible. Revert to reading "Unit Exponent" item value as a signed integer in hid_parser_global to fix reading specification-complying values. This fixes resolution calculation of devices complying to the HID standard, including Huion, KYE, Waltop and UC-Logic graphics tablets which have their report descriptors fixed by the drivers. Explanations follow. There are two "unit exponents" in HID specification and it is important not to mix them. One is the global "Unit Exponent" item and another is nibble values in the global "Unit" item. See 6.2.2.7 Global Items. The "Unit Exponent" value is just a signed integer and is used to scale the integer resolution unit values, so fractions can be expressed. The nibbles of "Unit" value are used to select the unit system (nibble 0), and presence of a particular basic unit type in the unit formula and its *exponent* (or power, nibbles 1-6). And yes, the latter is in two complement and zero means absence of the unit type. Taking the representation example of (integer) joules from the specification: [mass(grams)][length(centimeters)^2][time(seconds)^-2] * 10^-7 the "Unit Exponent" would be -7 (or 0xF9, if stored as a byte) and the "Unit" value would be 0xE121, signifying: Nibble Part Value Meaning ----- ---- ----- ------- 0 System 1 SI Linear 1 Length 2 Centimeters^2 2 Mass 1 Grams 3 Time -2 Seconds^-2 To give the resolution in e.g. hundredth of joules the "Unit Exponent" item value should have been -9. See also the examples of "Unit" values for some common units in the same chapter. However, there is a common misunderstanding about the "Unit Exponent" value encoding, where it is assumed to be stored the same as nibbles in "Unit" item. This is most likely due to the specification being a bit vague and overloading the term "unit exponent". This also was and still is proliferated by the official "HID Descriptor Tool", which makes this mistake and stores "Unit Exponent" as such. This format is also mentioned in books such as "USB Complete" and in Microsoft's hardware design guides. As a result many devices currently on the market use this encoding and so the driver should support them. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-09-13HID: validate feature and input report detailsBenjamin Tissoires1-1/+10
When dealing with usage_index, be sure to properly use unsigned instead of int to avoid overflows. When working on report fields, always validate that their report_counts are in bounds. Without this, a HID device could report a malicious feature report that could trick the driver into a heap overflow: [ 634.885003] usb 1-1: New USB device found, idVendor=0596, idProduct=0500 ... [ 676.469629] BUG kmalloc-192 (Tainted: G W ): Redzone overwritten CVE-2013-2897 Cc: stable@vger.kernel.org Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-09-06Merge branches 'for-3.12/devm', 'for-3.12/i2c-hid', 'for-3.12/i2c-hid-dt', ↵Jiri Kosina1-3/+89
'for-3.12/logitech', 'for-3.12/multitouch-win8', 'for-3.12/trasnport-driver-cleanup', 'for-3.12/uhid', 'for-3.12/upstream' and 'for-3.12/wiimote' into for-linus
2013-09-02HID: battery: don't do DMA from stackJiri Kosina1-2/+10
Instead of using data from stack for DMA in hidinput_get_battery_property(), allocate the buffer dynamically. Cc: stable@kernel.org Reported-by: Richard Ryniker <ryniker@alum.mit.edu> Reported-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-07-31HID: input: generic hidinput_input_event handlerDavid Herrmann1-1/+79
The hidinput_input_event() callback converts input events written from userspace into HID reports and sends them to the device. We currently implement this in every HID transport driver, even though most of them do the same. This provides a generic hidinput_input_event() implementation which is mostly copied from usbhid. It uses a delayed worker to allow multiple LED events to be collected into a single output event. We use the custom ->request() transport driver callback to allow drivers to adjust the outgoing report and handle the request asynchronously. If no custom ->request() callback is available, we fall back to the generic raw output report handler (which is synchronous). Drivers can still provide custom hidinput_input_event() handlers (see logitech-dj) if the generic implementation doesn't fit their needs. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-07-04Merge branches 'for-3.11/multitouch', 'for-3.11/sony' and ↵Jiri Kosina1-1/+6
'for-3.11/upstream' into for-linus Conflicts: drivers/hid/hid-core.c
2013-06-20HID: explain out-of-range check betterJiri Kosina1-1/+5
Extend the comment explaining the condition for discarding out-of-range values to clarify the cases in which devices don't provide any logical min/max. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-06-20HID: fix false positive out of range valuesBenjamin Tissoires1-0/+1
Commit 6da7066906e977d42104a859c490f5f9a300488c introduced in 3.3 "HID: ignore absolute values which don't fit between logical min and max" prevents some Posiflex touch screen to work because they do not provide logical min and max for their buttons. Thus, logical min and max are at 0, discarding the buttons events, and preventing the device to report appropriate X Y. Adding a check on "min < max" solves the problem. Reported-by: Jan Kandziora <jjj@gmx.de> Tested-by: Jan Kandziora <jjj@gmx.de> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-05-29HID: input: return ENODATA if reading battery attrs failsDavid Herrmann1-2/+2
power_supply core has the bad habit of calling our battery callbacks from within power_supply_register(). Furthermore, if the callbacks fail with an unhandled error code, it will skip any uevent that it might currently process. So if HID-core registers battery devices, an "add" uevent is generated and the battery callbacks are called. These will gracefully fail due to timeouts as they might still hold locks on event processing. One could argue that this should be fixed in power_supply core, but the least we can do is to signal ENODATA so power_supply core will just skip the property and continue with the uevent. This fixes a bug where "add" and "remove" uevents are skipped for battery devices. upower is unable to track these devices and currently needs to ignore them. This patch also overwrites any other error code. I cannot see any reason why we should forward protocol- or I/O-errors to the power_supply core. We handle these errors in hid_ll_driver later, anyway, so just skip them. power_supply core cannot do anything useful with them, anyway, and we avoid skipping important uevents and confusing user-space. Thanks a lot to Daniel Nicoletti for pushing and investigating on this. Cc: Jiri Kosina <jkosina@suse.cz> Cc: Anton Vorontsov <cbou@mail.ru> Cc: David Woodhouse <dwmw2@infradead.org> Reported-by: Daniel Nicoletti <dantti12@gmail.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-03-27HID: input: don't register unmapped input devicesBenjamin Tissoires1-0/+77
There is no need to register an input device containing no events. This allows drivers using the quirk MULTI_INPUT to register one input per report effectively used. For backward compatibility, we need to add a quirk to request this behavior. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-12-13Merge branches 'for-3.7/upstream-fixes', 'for-3.8/hidraw', ↵Jiri Kosina1-35/+62
'for-3.8/i2c-hid', 'for-3.8/multitouch', 'for-3.8/roccat', 'for-3.8/sensors' and 'for-3.8/upstream' into for-linus Conflicts: drivers/hid/hid-core.c
2012-11-29HID: hid-input: factorize hid_input allocationBenjamin Tissoires1-27/+34
This just refactors the allocation of hid_input. No semantic changes. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Reviewed-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-11-26HID: add battery quirk for Apple 2009_ISO keyboardOrtwin Glück1-0/+3
Support battery capacity on another Apple wireless keyboard. Signed-off-by: Ortwin Glück <odi@odi.ch> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-11-15HID: fix unit exponent parsingBenjamin Tissoires1-4/+9
HID spec details special values for the HID field unit exponent. Basically, the range [0x8..0xf] correspond to [-8..-1], so this is a standard two's complement on a half-byte. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-11-15HID: round return value of hidinput_calc_abs_resBenjamin Tissoires1-1/+1
hidinput_calc_abs_res should return the closest int in the division instead of the floor. On a device with a logical_max of 3008 and a physical_max of 255mm, previous implementation gave a resolution of 11 instead of 12. With 11, user-space computes a physical size of 273.5mm and the round_closest results gives 250.6mm. The old implementation introduced an error of 2cm in this example. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-11-15HID: export hidinput_calc_abs_resBenjamin Tissoires1-1/+8
Exporting the function allows us to calculate the resolution in third party drivers like hid-multitouch. This patch also complete the function with additional valid axes. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-10-31HID: fix incorrect handling of devices with high button countIngo Ruhnke1-2/+7
Button names for USB gamepads are currently assigned incorrectly, as the evdev code assigned to buttons is "BTN_GAMEPAD + code", which on devices with more then 16 buttons bleeds over into button names reserved for graphic tablets (BTN_TOOL_PEN, etc.). This causes problems further down the line as the device are now no longer detected as joystick. This patch fixes that by assigning buttons outside the range to BTN_TRIGGER_HAPPY (as is already the case for USB joysticks). Furthermore this patch corrects the assignment to BTN_TRIGGER_HAPPY, as currently the first button over 16 is assigned to BTN_TRIGGER_HAPPY17 (i.e. BTN_TRIGGER_HAPPY+0x10) not BTN_TRIGGER_HAPPY. Signed-off-by: Ingo Ruhnke <grumbel@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-09-19HID: Add an input configured notification callbackHenrik Rydberg1-2/+9
A hid device may create several input devices, and a driver may need to prepare or finalize the configuration per input device. Currently, there is no sane way for a driver to know when a device has been configured. This patch adds a callback providing that information. Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Tested-by: Ping Cheng <pingc@wacom.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2012-07-24Merge branches 'hidraw', 'magicmouse', 'multitouch', 'roccat', ↵Jiri Kosina1-0/+9
'suspend-fixes' and 'upstream' into for-linus
2012-07-09HID: Add suport for the brightness control keys on HP keyboardsKeng-Yu Lin1-0/+9
The keys are found on the keyboards bundled with HP All-In-One machines with USB VID/PID of 04ca:004d and 04f2:1061. Signed-off-by: Keng-Yu Lin <kengyu@canonical.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-07-04HID: add battery quirk for Apple Wireless ANSIDaniel Nicoletti1-0/+3
Add USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI, to the quirk list since it report wrong feature type and wrong percentage range. Signed-off-by: Daniel Nicoletti <dantti12@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-05-22Merge branches 'upstream-fixes', 'wacom' and 'waltop' into for-linusJiri Kosina1-3/+22
Conflicts: drivers/hid/hid-core.c
2012-05-01HID: hid-multitouch: Switch to device groupsHenrik Rydberg1-11/+0
Switch the driver over to device group handling. By adding the HID_GROUP_MULTITOUCH group to hid-core, hid-generic will no longer match multitouch devices. By adding the HID_GROUP_MULTITOUCH entry to the device list, hid-multitouch will match all unknown multitouch devices, and udev will automatically load the module. Since HID_QUIRK_MULTITOUCH never gets set, the special quirks handling can be removed. Since all HID MT devices have HID_DG_CONTACTID, they can be removed from the hid_have_special_driver list. With this patch, the unknown device ids are no longer NULL, so the code is modified to check for the generic entry instead. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Acked-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-03-28HID: hid-input: Add digitizer tilt usage supportNikolai Kondrashov1-3/+22
Add digitizer X Tilt and Y Tilt usage support along with resolution calculation. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-03-20Merge branches 'battery-scope', 'logitech' and 'multitouch' into for-linusJiri Kosina1-1/+8
2012-03-05HID: hid-input: allow array fields out of rangeNikolai Kondrashov1-2/+7
Allow array field values out of range as per HID 1.11 specification, section 6.2.25: Rather than returning a single bit for each button in the group, an array returns an index in each field that corresponds to the pressed button (like keyboard scan codes). An out-of range value in and array field is considered no controls asserted. Apparently, "and" above is a typo and should be "an". This fixes at least Waltop tablet pen clicks - otherwise BTN_TOUCH is never released. The relevant part of Waltop tablet report descriptors is this: 0x09, 0x42, /* Usage (Tip Switch), */ 0x09, 0x44, /* Usage (Barrel Switch), */ 0x09, 0x46, /* Usage (Tablet Pick), */ 0x15, 0x01, /* Logical Minimum (1), */ 0x25, 0x03, /* Logical Maximum (3), */ 0x75, 0x04, /* Report Size (4), */ 0x95, 0x01, /* Report Count (1), */ 0x80, /* Input, */ This is a regression fix for commit b4b583d ("HID: be more strict when ignoring out-of-range fields"). Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-02-04HID: hid-input/battery: set scope and powered device for HID batteryJeremy Fitzhardinge1-1/+8
Set the battery's power supply scope to "Device" and point the power supply to the powered device. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-01-09Merge branch 'hid-battery' of ↵Jiri Kosina1-28/+85
git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen into for-linus
2012-01-08hid-input/battery: add FEATURE quirkJeremy Fitzhardinge1-10/+17
Apple keyboards require a FEATURE report to query the battery state, even though they list as an input. Without this, it returns an error. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
2012-01-08hid-input/battery: remove battery_valJeremy Fitzhardinge1-8/+0
hidinput_get_battery_property() now directly polls the device for the current battery strength, so there's no need for battery_val, or the code to set it on the input event path. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
2012-01-08hid-input/battery: power-supply type really *is* a batteryJeremy Fitzhardinge1-1/+1
It just isn't a battery which is powering the computer. upower needs a more nuanced understanding of this. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
2012-01-08hid-input/battery: make the battery setup common for INPUTs and FEATUREsJeremy Fitzhardinge1-23/+20
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
2012-01-08hid-input/battery: deal with both FEATURE and INPUT report batteriesJeremy Fitzhardinge1-7/+13
Some devices seem to report batteries as FEATUREs, others as INPUTs. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
2012-01-08hid-input/battery: add quirks for batteryJeremy Fitzhardinge1-4/+37
Some devices always report percentage, despite having 0/255 as their min/max, so add a quirk for them. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
2012-01-08hid-input/battery: remove apparently redundant kmallocJeremy Fitzhardinge1-12/+3
Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
2012-01-08hid-input: add support for HID devices reporting Battery StrengthDaniel Nicoletti1-15/+46
I've sent an email earlier asking for help with a GetFeature code, and now I have a second patch on top of Jeremy's to provide the battery functionality for devices that support reporting it. If I understood correctly when talking to Jeremy he said his device never actually reported the status as an input event (sorry if I didn't understand it correctly), and after reading HID specs I believe it's really because it was meant to be probed, I have an Apple Keyboard and Magic Trackpad both bluetooth batteries operated, so using PacketLogger I saw that Mac OSX always ask the battery status using the so called GetFeature. What my patch does is basically: - store the report id that matches the battery_strength - setup the battery if 0x6.0x20 is found, even if that is reported as a feature (as it was meant to be but only the MagicTrackpad does) - when upower or someone access /sys/class/power_supply/hid-*/capacity it will probe the device and return it's status. It works great for both devices, but I have two concerns: - the report_features function has a duplicated code - it would be nice if it was possible for specific drivers to provide their own probe as there might be some strange devices... (but maybe it's already possible) I've talked to the upower dev and he fixed it to be able to show the right percentage. Here how the uevent file (in /sys/class/power_supply/hid-*/) looks like: POWER_SUPPLY_NAME=hid-00:22:41:D9:18:E7-battery POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_ONLINE=1 POWER_SUPPLY_CAPACITY=66 POWER_SUPPLY_MODEL_NAME=MacAdmin’s keyboard POWER_SUPPLY_STATUS=Discharging POWER_SUPPLY_NAME=hid-70:CD:60:F5:FF:3F-battery POWER_SUPPLY_PRESENT=1 POWER_SUPPLY_ONLINE=1 POWER_SUPPLY_CAPACITY=62 POWER_SUPPLY_MODEL_NAME=nexx’s Trackpad POWER_SUPPLY_STATUS=Discharging Signed-off-by: Daniel Nicoletti <dantti12@gmail.com>
2011-12-21HID: usbhid: defer LED setting to a workqueueDaniel Kurtz1-0/+42
Defer LED setting action to a workqueue. This is more likely to send all LED change events in a single URB. Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Acked-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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