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path: root/drivers/hid
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2016-09-22HID: alps: fix stick device not working after resumeKai-Heng Feng
The stick device does not work after resume, add U1_SP_ABS_MODE flag can make the device work after resume. This has been discovered by pure guesswork, based on how the existing code uses U1_TP_ABS_MODE flag on both initialization and resume. I also tested the the patch on an ALPS touchpad without stick device, did not notice any side effect on suspend/resume, so I made the U1_SP_ABS_MODE flag mandatory. [jkosina@suse.cz: made changelog more verbose] Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: support for keyboard - Corsair STRAFEMarian Krivoš
Add quirk for Corsair STRAFE keyboard, similarly to what we've been doing for other CORSAIR devices already, in order to avoid long delays during boot. [jkosina@suse.cz: reword changelog a little bit] Signed-off-by: Marian Krivos <marian.krivos@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: alps: Fix memory leakAxel Lin
A kfree(readbuf) call was missed if hid_hw_raw_request() fails, fix it. Also avoid mixing direct return with goto in the error paths. Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: uclogic: Add support for UC-Logic TWHA60 v3Nikolai Kondrashov
Add support for the third version of UC-Logic TWHA60, which has three interfaces and responds to initialization. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: uclogic: Override constant descriptorsNikolai Kondrashov
Make uclogic_report_fixup override constant descriptors with generated descriptors, so models reusing product ID, but working with generated descriptor get correct one. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: uclogic: Support UGTizer GP0610 partiallyNikolai Kondrashov
Add partial support for the UGTizer GP0610 tablet (aka iBall PF1064U, aka UGTizer GT1060) to the hid-uclogic.c driver. The pen input is supported fully, but frame buttons and wheel don't work yet. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: uclogic: Add support for several more tabletsNikolai Kondrashov
Add more product IDs to hid-uclogic.c driver to support several more tablet models, including: UC-Logic DrawImage G3 aka Ugee G3 UC-Logic SP1001 aka Ugee SP1001 aka Yiynova UC-Logic SP-1001 Ugee 1000L Ugee M708 Yiynova DP10U aka Yiynova DP10U+ Yiynova MSP19U Yiynova MSP19U+ Yiynova MVP10U aka Yiynova MVP10U IPS Yiynova MVP10UHD+IPS Yiynova MVP22U+ Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: uclogic: Switch to reporting abstract button eventsBenjamin Tissoires
Based on a patch from: Nikolai Kondrashov <Nikolai.Kondrashov@redhat.com> Enable abstract keyboard mode for Huion tablets, which makes them report frame buttons using the pen interface and report ID. Divert these reports to a virtual report ID describing them. This makes the tablet compatible with xf86-input-wacom and libinput, but stops the frame buttons from reporting keyboard events. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: uclogic: Remove allocation failure messagesNikolai Kondrashov
Remove unnecessary allocation failure messages from hid-uclogic.c, following the checkpatch.pl recommendations. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: kye: Fix MousePen i608X v2 report descriptorNikolai Kondrashov
Add a dedicated, fixed report descriptor for the second version of KYE MousePen i608X graphics tablet. The descriptor fixes pressure and drawing area ranges. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: kye: Rename MousePen i608X v2 macroNikolai Kondrashov
Rename the device ID macro for the second version of KYE MousePen i608x graphics tablet to have "V" in its name to signify that "2" is a version. I.e. USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2 -> USB_DEVICE_ID_KYE_MOUSEPEN_I608X_V2 This also makes applying additional fixes from DIGImend easier. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: Remove broken links to tablet descriptionsNikolai Kondrashov
Remove comments with broken links to tablet descriptions from hid-kye/uclogic/waltop drivers. They pointed to now dead DIGImend project wiki at sf.net. Even though the DIGImend project still hosts descriptions, now at digimend.github.io, it's better to avoid them going stale again, and let anyone interested search the web instead. Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-09-19HID: input: ignore System Control application usages if not System ControlsBenjamin Tissoires
Microsoft is reusing its report descriptor again and again, and part of it looks like this: 0x05, 0x01, // Usage Page (Generic Desktop) 299 0x09, 0x80, // Usage (System Control) 301 0xa1, 0x01, // Collection (Application) 303 0x85, 0x03, // Report ID (3) 305 0x19, 0x00, // Usage Minimum (0) 307 0x29, 0xff, // Usage Maximum (255) 309 0x15, 0x00, // Logical Minimum (0) 311 0x26, 0xff, 0x00, // Logical Maximum (255) 313 0x81, 0x00, // Input (Data,Arr,Abs) 316 0xc0, // End Collection 318 While there is nothing wrong in term of processing, we do however blindly map the full usage range (it's an array) from 0x00 to 0xff, which creates some interesting axis, like ABS_X|Y, and a bunch of ABS_MISC + n. While libinput and other stacks don't care that much (we can detect them), joydev is very happy and attaches itself to the mouse or keyboard. The problem is that joydev now handles the device as a joystick, but given that we have a HID array, it sets all the ABS_* values to 0. And in its world, 0 means -32767 (minimum value), which sends spurious events to games (think Steam). It looks like hid-microsoft tries to tackle the very same problem with its .report_fixup callback. But fixing the report descriptor is an endless task and is quite obfuscated. So take the hammer, and decide that if the application is meant to be System Control, any other usage not in the System Control range should be ignored. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1325354 Link: https://bugzilla.kernel.org/show_bug.cgi?id=28912 Link: https://github.com/ValveSoftware/steam-for-linux/issues/3384 Link: https://bugzilla.redhat.com/show_bug.cgi?id=1325354 Link: https://bugzilla.kernel.org/show_bug.cgi?id=37982 Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-31miscdevice: Add helper macro for misc device boilerplatePrasannaKumar Muralidharan
Many modules call misc_register and misc_deregister in its module init and exit methods without any additional code. This ends up being boilerplate. This patch adds helper macro module_misc_device(), that replaces module_init()/ module_exit() with template functions. This patch also converts drivers to use new macro. Change since v1: Add device.h include in miscdevice.h as module_driver macro was not available from other include files in some architectures. Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-29HID: intel_ish-hid: Remove duplicated include from bus.cWei Yongjun
Remove duplicated include. Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-29HID: intel_ish-hid: Use kzalloc instead of kmalloc/memsetWei Yongjun
Use kzalloc rather than kmalloc followed by memset with 0. Generated by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-29HID: intel_ish-hid: Convert list_for_each to entry variantWei Yongjun
convert list_for_each() to list_for_each_entry() where applicable. Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-29HID: intel-ish-hid: use module_pci_driver to simplify the codeWei Yongjun
Use the module_pci_driver() macro to make the code simpler by eliminating module_init and module_exit calls. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-29HID: intel-ish-hid: use list_move_tail instead of list_del/list_add_tailWei Yongjun
Using list_move_tail() instead of list_del() + list_add_tail(). Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-17HID: microsoft: Add Surface 4 type cover pro 4 (JP)Yuta Kobayashi
Adding support for the Microsoft Surface 4 Type Cover Pro (JP). Signed-off-by: Yuta Kobayashi <alu.ula@outlook.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-17HID: hid-sensor-hub: Add ISH quirkSrinivas Pandruvada
Need enum quirk to change the base of enums to 1 for power and report descriptors. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-17HID: intel-ish-hid: ISH HID client driverSrinivas Pandruvada
This driver is responsible for implementing ISH HID client, which gets HID description and report. Once it has completely gets report descriptors, it registers as a HID LL drivers. This implements necessary callbacks so that it can be used by HID sensor hub driver. Original-author: Daniel Drubin <daniel.drubin@intel.com> Reviewed-and-tested-by: Ooi, Joyce <joyce.ooi@intel.com> Tested-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Rann Bar-On <rb6@duke.edu> Tested-by: Atri Bhattacharya <badshah400@aim.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-17HID: intel-ish-hid: ipc layerSrinivas Pandruvada
This layer is responsible for - Enumerating over PCI bus - Inform FW about host readiness - Provide HW interface to transport layer for control and messages - Interrupt handling and routing Original-author: Daniel Drubin <daniel.drubin@intel.com> Reviewed-and-tested-by: Ooi, Joyce <joyce.ooi@intel.com> Tested-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Rann Bar-On <rb6@duke.edu> Tested-by: Atri Bhattacharya <badshah400@aim.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-17HID: intel_ish-hid: ISH Transport layerSrinivas Pandruvada
The ISH transport layer (ishtp) is a bi-directional protocol implemented on the top of PCI based inter processor communication layer. This layer offers: - Connection management - Flow control with the firmware - Multiple client sessions - Client message transfer - Client message reception - DMA for RX and TX for fast data transfer Refer to Documentation/hid/intel-ish-hid.txt for overview of the functionality implemented in this layer. Original-author: Daniel Drubin <daniel.drubin@intel.com> Reviewed-and-tested-by: Ooi, Joyce <joyce.ooi@intel.com> Tested-by: Grant Likely <grant.likely@secretlab.ca> Tested-by: Rann Bar-On <rb6@duke.edu> Tested-by: Atri Bhattacharya <badshah400@aim.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-11HID: wacom: Update last_slot_field during pre_report phaseJason Gerecke
If a touchscreen contains both multitouch and single-touch reports in its descriptor in that order, the driver may overwrite information it saved about the format of the multitouch report. This can cause the report processing code to get tripped up and send an incorrect event stream to userspace. In particular, this can cause last_slot_field to be overwritten with the result that the driver prematurely assumes it has finished processing a slot and sending the ABS_MT_SLOT event at the wrong point in time, associating events for the current contact with the following contact instead. To prevent this from occurring, we update the value of last_slot_field durring the pre_report phase to ensure that it is correct for the report that is to be processed. Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Reviewed-by: Ping Cheng <pingc@wacom.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-10HID: wacom - add touch_arbitration parameter to wacom modulePing Cheng
Touch arbitration is always on in wacom.ko. However, there are touch enabled applications use both pen and touch simultaneously. We should provide an option for userland to decide if they want arbitration on or off. This patch sets default touch_arbitration to on since most userland apps are not ready to process pen and touch events simultaneously. In the future, when userland is ready to accept pen and touch events together, we will switch default touch_arbitration to off. Tested-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Ping Cheng <pingc@wacom.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-10HID: wacom: Augment 'oVid' and 'oPid' with heuristics for HID_GENERICJason Gerecke
The 'oVid' and 'oPid' variables used by wacom_are_sibling are a hacky solution to the problem of the driver historically having few good heuristics to use in determining if two devices should be considered siblings or not. While it works well enough for explicitly supported devices, it offers no help for HID_GENERIC devices. Now that we have a bit more information (e.g. direct/indirect) available to us though, we should make use of it it to improve the pairing of such devices. Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-10HID: wacom: Add WACOM_DEVICETYPE_DIRECT for Cintiqs and similarJason Gerecke
"Direct" input devices like Cintiqs and Tablet PCs set the INPUT_PROP_DIRECT property to notify userspace that the sensor and screen are overlaid. This information can also be useful elsewhere within the kernel driver, however, so we introduce a new WACOM_DEVICETYPE_DIRECT that signals this to other kernel code. Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: power_supply: provide the actual model_nameBenjamin Tissoires
Instead of displaying a generic "tablet", now g-c-c shows a pretty "Wacom Intuos Pro S (WL)". Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: power_supply: remove ac informationBenjamin Tissoires
Looks like upowerd is ignoring this since October 2013, so there is no need to keep this around in the kernel. And as mentioned in 8aaa592 (linux: Ignore ACs coming from devices) in the upower tree, "We already have enough information on the device battery". Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: power_supply: mark the type as USBBenjamin Tissoires
When upowerd detects a new device, it tries to map this new device to an input to guess its kind. It works OK for wired tablets when the wireless module and its battery are attached, but not so well when connected over wireless. In that case, the battery is attached to the wireless HID node, not the Pen or Pad HID node. So there is no input node as a parent of the reported battery, which means it will be showed as a computer battery in gnome-control-center. If we set the power supply type to USB, upowerd has a heuristic that detects "wacom_" in the name of the power_supply, and set the type to tablet. So it's now clear that the reported battery of from a tablet. (see https://cgit.freedesktop.org/upower/tree/src/linux/up-device-supply.c) Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: leds: handle Cintiq 24HD leds buttonsBenjamin Tissoires
The 24HD has 1 button per LED (first three buttons of each group). We need a special treatment for them as it's not a uniq button that switches between the LEDs. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: leds: make sure Cintiq 21UX2 and 24HD control the right LEDsBenjamin Tissoires
The code for 21UX2 and 24HD makes the LED group 1 on the left, and the group 0 on the right. The buttons are ordered in the other way, but libwacom already exports those that way. So we simply can't reassign LED group 0 to the left buttons, and have to quirk the incoming data... Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: leds: handle the switch of the LEDs directly in the kernelBenjamin Tissoires
The EKR switches the LED directly, and there is no point in having userspace handling the switch it self when it's easy enough to do in the kernel. The other benefit is that now userspace does not need to have root access to the LED but need only to read them with user privileges. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: leds: actually release the LEDs on disconnectBenjamin Tissoires
There is a bug (?) in devm_led_classdev_register() in which its increments the refcount of the parent. If the parent is an input device, that means the ref count never reaches 0 when devm_input_device_release() gets called. This means that the LEDs and all the devres resources attached to the input device are not released. Manually force the release of the group so that the leds are released once we are done using them. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: leds: use the ledclass instead of custom made sysfs filesBenjamin Tissoires
The now obsolete sysfs files for LEDs and EKRemote are kept for backward compatibility. Both the EKR (read-only) and the regular Cintiqs and Intuos are now sharing the same led API. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: EKR: attach the power_supply on first connectionBenjamin Tissoires
Or Gnome complains about an empty battery. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: EKR: have one power_supply per remoteBenjamin Tissoires
Previously, all the remotes attached to the same receiver would share the same power_supply. That's not good as the remotes will constantly change the battery information according to their own state. To have something generic enough, we introduce struct wacom_battery which regroups all the information we need for a battery. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: EKR: allocate one input node per remoteBenjamin Tissoires
Thanks to devres, we can now afford to create more than one input node without having to overload the remove/failure paths. Having one input node per remote is something which should have been implemented from start but the probability of having users with several remotes is quite low. Anyway, still, better looking at the future and implement things properly. Remote input nodes will be freed/unregistered magically as they are created in the devres group &remote->remotes[index]. We need to open the hid node now that the remotes are dynamically allocated. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: EKR: have one array of struct remotes instead of many arraysBenjamin Tissoires
No functional changes, just a prep patch for the one after. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: EKR: use devres groups to manage resourcesBenjamin Tissoires
This will be useful when each remote will be assigned its own input device. We won't need to unregister each input and sysfs and other elements one at a time. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: EKR: have proper allocator and destructorBenjamin Tissoires
The wacom_remote_create_attr_group() and wacom_remote_destroy_attr_group() functions were both allocating/destroying the sysfs groups but also initializing the parameters for the remotes. Have proper functions that can be called and extended. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: rework fail path in probe() and parse_and_register()Benjamin Tissoires
Thanks to devres management, we don't need to remember a lot of failure path. One or two is enough. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: EKR: have the wacom resources dynamically allocatedBenjamin Tissoires
If we want to have one input device per remote, it's better to have our own struct wacom_remote which is dynamically allocated. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: EKR: add a worker to add/remove resources on addition/removalBenjamin Tissoires
wacom_remote_status_irq() sends information of addition/removal of EKR. We want to allocate one input node per remote, so better having this in a separate worker, not handled in the IRQ directly. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: leds: dynamically allocate LED groupsBenjamin Tissoires
We need to add an action to ensure wacom->led.groups is null when wacom_led_control() gets called after the resources has been freed. This also prevents to send a LED command when there is no support from the device. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: devres manage the shared data tooBenjamin Tissoires
wacom_release_shared_data() and wacom_remove_shared_data() are moved up so they can be referenced in wacom_add_shared_data(). There is no point in explicitly setting wacom_wac1->shared->type to 0 in wacom_wireless_work() (plus this would give an oops). Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: use devres to allocate driver dataBenjamin Tissoires
We started switching the driver to devres, so we should use it as much as possible. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: use devm_kasprintf for allocating the name of the remoteBenjamin Tissoires
The sysfs group was indeed removed by kobject_put(wacom->remote_dir) in wacom_remove(), but the name of the group was never freed. Also remove the misplaced kobject_put(wacom->remote_dir) in the error path of wacom_remote_create_attr_group(). Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-08-05HID: wacom: convert LEDs to devresBenjamin Tissoires
Use our own wacom_devm_sysfs_create_group() as there is currently no generic one. It has been requested at least twice [1][2] but has been always rejected. However, in the Wacom case, for the wirelessly connected devices, we need to be able to release the created sysfs files without removing the parent kobject. [1] https://patchwork.kernel.org/patch/7526551/ [2] https://lkml.org/lkml/2013/3/14/728 Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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