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2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 233Thomas Gleixner1-6/+1
Based on 1 normalized pattern(s): this software is licensed under the terms of the gnu general public license version 2 as published by the free software foundation and may be copied distributed and modified under those terms extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 6 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.720704315@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-10Input: elants_i2c - use DMA safe i2c when possibleStephen Boyd1-3/+4
To avoid bounce buffer when an i2c controller decides to use DMA for a transaction, let's make out buffer that we use for reads DMA-safe and let the master know that DMAing into it is safe. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-02-01Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds1-2/+0
Pull input layer updates from Dmitry Torokhov: - evdev interface has been adjusted to extend the life of timestamps on 32 bit systems to the year of 2108 - Synaptics RMI4 driver's PS/2 guest handling ha beed updated to improve chances of detecting trackpoints on the pass-through port - mms114 touchcsreen controller driver has been updated to support generic device properties and work with mms152 cntrollers - Goodix driver now supports generic touchscreen properties - couple of drivers for AVR32 architecture are gone as the architecture support has been removed from the kernel - gpio-tilt driver has been removed as there are no mainline users and the driver itself is using legacy APIs and relies on platform data - MODULE_LINECSE/MODULE_VERSION cleanups * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (45 commits) Input: goodix - use generic touchscreen_properties Input: mms114 - fix typo in definition Input: mms114 - use BIT() macro instead of explicit shifting Input: mms114 - replace mdelay with msleep Input: mms114 - add support for mms152 Input: mms114 - drop platform data and use generic APIs Input: mms114 - mark as direct input device Input: mms114 - do not clobber interrupt trigger Input: edt-ft5x06 - fix error handling for factory mode on non-M06 Input: stmfts - set IRQ_NOAUTOEN to the irq flag Input: auo-pixcir-ts - delete an unnecessary return statement Input: auo-pixcir-ts - remove custom log for a failed memory allocation Input: da9052_tsi - remove unused mutex Input: docs - use PROPERTY_ENTRY_U32() directly Input: synaptics-rmi4 - log when we create a guest serio port Input: synaptics-rmi4 - unmask F03 interrupts when port is opened Input: synaptics-rmi4 - do not delete interrupt memory too early Input: ad7877 - use managed resource allocations Input: stmfts,s6sy671 - add SPDX identifier Input: remove atmel-wm97xx touchscreen driver ...
2018-02-01Merge tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-coreLinus Torvalds1-1/+1
Pull driver core updates from Greg KH: "Here is the set of "big" driver core patches for 4.16-rc1. The majority of the work here is in the firmware subsystem, with reworks to try to attempt to make the code easier to handle in the long run, but no functional change. There's also some tree-wide sysfs attribute fixups with lots of acks from the various subsystem maintainers, as well as a handful of other normal fixes and changes. And finally, some license cleanups for the driver core and sysfs code. All have been in linux-next for a while with no reported issues" * tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (48 commits) device property: Define type of PROPERTY_ENRTY_*() macros device property: Reuse property_entry_free_data() device property: Move property_entry_free_data() upper firmware: Fix up docs referring to FIRMWARE_IN_KERNEL firmware: Drop FIRMWARE_IN_KERNEL Kconfig option USB: serial: keyspan: Drop firmware Kconfig options sysfs: remove DEBUG defines sysfs: use SPDX identifiers drivers: base: add coredump driver ops sysfs: add attribute specification for /sysfs/devices/.../coredump test_firmware: fix missing unlock on error in config_num_requests_store() test_firmware: make local symbol test_fw_config static sysfs: turn WARN() into pr_warn() firmware: Fix a typo in fallback-mechanisms.rst treewide: Use DEVICE_ATTR_WO treewide: Use DEVICE_ATTR_RO treewide: Use DEVICE_ATTR_RW sysfs.h: Use octal permissions component: add debugfs support bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate ...
2018-02-01Merge branch 'next' into for-linusDmitry Torokhov1-2/+0
Prepare input updates for 4.16 merge window.
2018-01-16Input: remove unneeded MODULE_VERSION() usage in touchscreen driversGreg Kroah-Hartman1-2/+0
MODULE_VERSION is useless for in-kernel drivers, so just remove all usage of it in the touchscreen drivers. Along with this, some DRV_VERSION macros were removed as they are also pointless. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-01-09treewide: Use DEVICE_ATTR_WOJoe Perches1-1/+1
Convert DEVICE_ATTR uses to DEVICE_ATTR_WO where possible. Done with perl script: $ git grep -w --name-only DEVICE_ATTR | \ xargs perl -i -e 'local $/; while (<>) { s/\bDEVICE_ATTR\s*\(\s*(\w+)\s*,\s*\(?(?:\s*S_IWUSR\s*|\s*0200\s*)\)?\s*,\s*NULL\s*,\s*\s_store\s*\)/DEVICE_ATTR_WO(\1)/g; print;}' Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-29Input: elants_i2c - do not clobber interrupt trigger on x86Dmitry Torokhov1-3/+7
This is similar to commit a4b0a58bb142 ("Input: elan_i2c - do not clobber interrupt trigger on x86") On x86 we historically used falling edge interrupts in the driver because that's how first Chrome devices were configured. They also did not use ACPI to enumerate I2C devices (because back then there was no kernel support for that), so trigger was hard-coded in the driver. However the controller behavior is much more reliable if we use level triggers, and that is how we configured ARM devices, and how want to configure newer x86 devices as well. All newer x86 boxes have their I2C devices enumerated in ACPI. Let's see if platform code (ACPI, DT) described interrupt and specified particular trigger type, and if so, let's use it instead of always clobbering trigger with IRQF_TRIGGER_FALLING. We will still use this trigger type as a fallback if platform code left interrupt trigger unconfigured. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-29Input: elants_i2c - use managed devm_device_add_groupAndi Shyti1-18/+1
Commit 57b8ff070f98 ("driver core: add devm_device_add_group() and friends") has added the managed version for creating sysfs group files. Use devm_device_add_group instead of sysfs_create_group and remove the action that cleans the sysfs file when exiting the driver. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-07-12Input: elants_i2c - constify attribute_group structuresArvind Yadav1-1/+1
attribute_groups are not supposed to change at runtime. All functions working with attribute_groups provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 9448 1008 0 10456 28d8 drivers/input/touchscreen/elants_i2c.o File size After adding 'const': text data bss dec hex filename 9496 944 0 10440 28c8 drivers/input/touchscreen/elants_i2c.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-01-24Merge tag 'v4.10-rc5' into nextDmitry Torokhov1-2/+2
Sync up with mainline to bring up improvements in various subsystems.
2017-01-22Input: touchscreen - drop unnecessary calls to input_set_drvdataGuenter Roeck1-2/+0
Since there is no call to dev_get_drvdata() or input_get_drvdata(), the call to input_set_drvdata() is unnecessary and can be dropped. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-01-05Input: elants_i2c - avoid divide by 0 errors on bad touchscreen dataGuenter Roeck1-2/+2
The following crash may be seen if bad data is received from the touchscreen. [ 2189.425150] elants_i2c i2c-ELAN0001:00: unknown packet ff ff ff ff [ 2189.430738] divide error: 0000 [#1] PREEMPT SMP [ 2189.434679] gsmi: Log Shutdown Reason 0x03 [ 2189.434689] Modules linked in: ip6t_REJECT nf_reject_ipv6 rfcomm evdi uinput uvcvideo cmac videobuf2_vmalloc videobuf2_memops snd_hda_codec_hdmi i2c_dev videobuf2_core snd_soc_sst_cht_bsw_rt5645 snd_hda_intel snd_intel_sst_acpi btusb btrtl btbcm btintel bluetooth snd_soc_sst_acpi snd_hda_codec snd_intel_sst_core snd_hwdep snd_soc_sst_mfld_platform snd_hda_core snd_soc_rt5645 memconsole_x86_legacy memconsole zram snd_soc_rl6231 fuse ip6table_filter iwlmvm iwlwifi iwl7000_mac80211 cfg80211 iio_trig_sysfs joydev cros_ec_sensors cros_ec_sensors_core industrialio_triggered_buffer kfifo_buf industrialio snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device ppp_async ppp_generic slhc tun [ 2189.434866] CPU: 0 PID: 106 Comm: irq/184-ELAN000 Tainted: G W 3.18.0-13101-g57e8190 #1 [ 2189.434883] Hardware name: GOOGLE Ultima, BIOS Google_Ultima.7287.131.43 07/20/2016 [ 2189.434898] task: ffff88017a0b6d80 ti: ffff88017a2bc000 task.ti: ffff88017a2bc000 [ 2189.434913] RIP: 0010:[<ffffffffbecc48d5>] [<ffffffffbecc48d5>] elants_i2c_irq+0x190/0x200 [ 2189.434937] RSP: 0018:ffff88017a2bfd98 EFLAGS: 00010293 [ 2189.434948] RAX: 0000000000000000 RBX: ffff88017a967828 RCX: ffff88017a9678e8 [ 2189.434962] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000000 [ 2189.434975] RBP: ffff88017a2bfdd8 R08: 00000000000003e8 R09: 0000000000000000 [ 2189.434989] R10: 0000000000000000 R11: 000000000044a2bd R12: ffff88017a991800 [ 2189.435001] R13: ffffffffbe8a2a53 R14: ffff88017a0b6d80 R15: ffff88017a0b6d80 [ 2189.435011] FS: 0000000000000000(0000) GS:ffff88017fc00000(0000) knlGS:0000000000000000 [ 2189.435022] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 2189.435030] CR2: 00007f678d94b000 CR3: 000000003f41a000 CR4: 00000000001007f0 [ 2189.435039] Stack: [ 2189.435044] ffff88017a2bfda8 ffff88017a9678e8 646464647a2bfdd8 0000000006e09574 [ 2189.435060] 0000000000000000 ffff88017a088b80 ffff88017a921000 ffffffffbe8a2a53 [ 2189.435074] ffff88017a2bfe08 ffffffffbe8a2a73 ffff88017a0b6d80 0000000006e09574 [ 2189.435089] Call Trace: [ 2189.435101] [<ffffffffbe8a2a53>] ? irq_thread_dtor+0xa9/0xa9 [ 2189.435112] [<ffffffffbe8a2a73>] irq_thread_fn+0x20/0x40 [ 2189.435123] [<ffffffffbe8a2be1>] irq_thread+0x14e/0x222 [ 2189.435135] [<ffffffffbee8cbeb>] ? __schedule+0x3b3/0x57a [ 2189.435145] [<ffffffffbe8a29aa>] ? wake_threads_waitq+0x2d/0x2d [ 2189.435156] [<ffffffffbe8a2a93>] ? irq_thread_fn+0x40/0x40 [ 2189.435168] [<ffffffffbe87c385>] kthread+0x10e/0x116 [ 2189.435178] [<ffffffffbe87c277>] ? __kthread_parkme+0x67/0x67 [ 2189.435189] [<ffffffffbee900ac>] ret_from_fork+0x7c/0xb0 [ 2189.435199] [<ffffffffbe87c277>] ? __kthread_parkme+0x67/0x67 [ 2189.435208] Code: ff ff eb 73 0f b6 bb c1 00 00 00 83 ff 03 7e 13 49 8d 7c 24 20 ba 04 00 00 00 48 c7 c6 8a cd 21 bf eb 4d 0f b6 83 c2 00 00 00 99 <f7> ff 83 f8 37 75 15 48 6b f7 37 4c 8d a3 c4 00 00 00 4c 8d ac [ 2189.435312] RIP [<ffffffffbecc48d5>] elants_i2c_irq+0x190/0x200 [ 2189.435323] RSP <ffff88017a2bfd98> [ 2189.435350] ---[ end trace f4945345a75d96dd ]--- [ 2189.443841] Kernel panic - not syncing: Fatal exception [ 2189.444307] Kernel Offset: 0x3d800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 2189.444519] gsmi: Log Shutdown Reason 0x02 The problem was seen with a 3.18 based kernel, but there is no reason to believe that the upstream code is safe. Fixes: 66aee90088da2 ("Input: add support for Elan eKTH I2C touchscreens") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2016-08-25Input: elants_i2c - get product id on recovery mode for FW updateJohnny Chuang1-11/+20
We use hw version to construct name of file holding touchscreen firmware, so let's try reading it even if touchscreen initialization fails (the firmware supports reading product/hardware id even when device is in recovery/boot mode). Signed-off-by: Johnny Chuang <johnny.chuang@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-12-18Input: elants_i2c - fix wake-on-touchJames Chen1-9/+12
When sending "SLEEP" command to the controller it ceases scanning completely and is unable to wake the system up from sleep, so if it is configured as a wakeup source we should simply configure interrupt for wakeup and rely on idle logic within the controller to reduce power consumption while it is not used. Signed-off-by: James Chen <james.chen@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-09-03Input: elants_i2c - extend the calibration timeout to 12 secondsJames Chen1-1/+1
The 23 inch device found in Chrome project buddy requires 9.2~10.5 seconds to complete calibration. Let's increase calibration timeout to 12 seconds to give the device enough time. Signed-off-by: James Chen <james.chen@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-13Input: elants_i2c - fix for devm_gpiod_get API changeStephen Rothwell1-9/+1
Flags are now mandatory for devm_gpiod_get(). So let's use proper flag to configure gpio for output instead of doing this by hand. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> [Dmitry: GPIOD_ASIS -> GPIOD_OUT_LOW] Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-07Input: elants_i2c - enable asynchronous probingDmitry Torokhov1-0/+1
It takes a bit of time to go through controller power up sequence and initialization. To not stall the overall boot progress let's probe the controller asynchronously, given that userspace is usually prepared for hot-plugging of input devices and thus does not rely on particular ordering. Signed-off-by: Dmitry Torokhov <dtor@chromium.org> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-07Input: elants_i2c - wire up regulator supportDmitry Torokhov1-22/+162
Elan touchscreen controllers use two power supplies, vcc33 and vccio, and we need to enable them before trying to access the device. On X86 firmware usually does this, but on ARM it is usually left to the kernel. Signed-off-by: Dmitry Torokhov <dtor@chromium.org> Reviewed-by: Benson Leung <bleung@chromium.org> Reviewed-by: Scott Liu <scott.liu@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-05Input: elants_i2c - disable idle mode before updating firmwareJames Chen1-1/+7
If the device is in idle mode and is in the middle of a scan it may not have a chance to react to the reset and then IAP commands within required time interval and firmware update may fail. Let's bring the device out of idle mode before attempting to reset it so that the scan period is smaller and thus it can react to the command quicker. Signed-off-by: James Chen <james.chen@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-07-17Input: drop owner assignment from i2c_driverKrzysztof Kozlowski1-1/+0
i2c_driver does not need to set an owner because i2c_register_driver() will set it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-04-20Input: elants_i2c - zero-extend hardware ID in firmware nameDmitry Torokhov1-1/+1
Let's zero-extend hardware id number when forming firmware file name, to avoid kernel requesting firmware like "elants_i2c_ 0.bin", which is quite unexpected. Acked-by: Charlie Mooney<charliemooney@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-03-11Input: elants_i2c - append hw_version to FW fileCharlie Mooney1-4/+10
Currently the elants_i2c driver simply requests a static filename /lib/firmware/elants_i2c.bin when it gets firmware updates. This is a problem if you have two Elan touchscreens using the same driver. If both touchscreens have different firmwares, you would need to move the files around in your filesystem when you're updating them so that they don't get updated with the other's FW. If you have a read-only filesystem then this is impossible, even. This patch changes the elants_i2c driver to automatically append the four-hex-digit hw_version of the device onto the name of the FW file it's requesting for update. Since different touchscreens should have a different hw_version's this means the user needs to append the hw version of the touchscreen he or she intends to update onto the end of the firmware filename and then the driver will do the rest. The firmware filenames it looks for now are of the form: elants_i2c_${HW_VERSION}.bin eg: elants_i2c_2a44.bin Signed-off-by: Charlie Mooney <charliemooney@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-29Input: elants_i2c - remove unnecessary version.h inclusionFabian Frederick1-2/+0
Based on versioncheck. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-07Input: add support for Elan eKTH I2C touchscreensScott Liu1-0/+1271
This driver supports Elan eKTH I2C touchscreen controllers. Note that these are using custom protocol, as opposed to other Elan parts that use HID-over-I2C and are supported by the standard HID-multitouch driver. Signed-off-by: Scott Liu <scott.liu@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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