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path: root/drivers/input
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2015-08-30Merge remote-tracking branches 'asoc/topic/rcar', 'asoc/topic/reg-default', ↵Mark Brown
'asoc/topic/rl6231', 'asoc/topic/rockchip' and 'asoc/topic/rt286' into asoc-next
2015-08-30Merge remote-tracking branches 'regulator/topic/lp872x', ↵Mark Brown
'regulator/topic/ltc3589', 'regulator/topic/max77693' and 'regulator/topic/max8973' into regulator-next
2015-08-28Input: max8997_haptic - fix module aliasJavier Martinez Canillas
The driver is a platform driver and not a I2C driver so its modalias should be exported with MODULE_DEVICE_TABLE(platform,...) instead of MODULE_DEVICE_TABLE(i2c,...). Also, remove the unnecessary MODULE_ALIAS("platform:max8997-haptic") now that the correct module alias is created. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-28Input: elan_i2c - fix typos for validpage_countBenson Leung
Search for "vaildpage_count" and replace with "validpage_count". Signed-off-by: Benson Leung <bleung@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-26Input: psmouse - add small delay for IBM trackpoint pass-through modeStefan Assmann
There are trackpoint devices that fail to respond to the PS2 command PSMOUSE_CMD_GETID if immediately queried after the parent device is deactivated. Add a small delay for the hardware to get in a sane state before sending any PS2 commands. One example of such a system is: Lenovo ThinkPad X120e, model 30515QG synaptics: Touchpad model: 1, fw: 8.0, id: 0x1e2b1, caps: 0xd001a3/0x940300/0x121c00, board id: 1811, fw id: 797391 Signed-off-by: Stefan Assmann <sassmann@kpanic.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-26Input: synaptics - fix handling of disabling gesture modeDmitry Torokhov
Bit 2 of the mode byte has dual meaning: it can disable reporting of gestures when touchpad works in Relative mode or normal Absolute mode, or it can enable so called Extended W-Mode when touchpad uses enhanced Absolute mode (W-mode). The extended W-Mode confuses our driver and causes missing button presses on some Thinkpads (x250, T450s), so let's make sure we do not enable it. Also, according to the spec W mode "... bit is defined only in Absolute mode on pads whose capExtended capability bit is set. In Relative mode and in TouchPads without this capability, the bit is reserved and should be left at 0.", so let's make sure we respect this requirement as well. Reported-by: Nick Bowler <nbowler@draconx.ca> Suggested-by: Gabor Balla <gaborwho@gmail.com> Tested-by: Gabor Balla <gaborwho@gmail.com> Tested-by: Nick Bowler <nbowler@draconx.ca> Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-24Input: elan_i2c - enable ELAN0100 acpi panelsMichele Curti
Enable ELAN0100 touchpad driver, found on a Asus X205TA laptop, to gai 2,3 fingers tap and 2 fingers scroll. Signed-off-by: Michele Curti <michele.curti@gmail.com> Reviewed-by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-24Input: gpio-keys - report error when disabling unsupported keyPeng Fan
When trying to disable a key that is not supported by the device we should report error, not do nothing and report success: root@yocto:/sys/devices/soc0/gpio-keys# cat keys 114-116 root@yocto:/sys/devices/soc0/gpio-keys# echo 77 > keys root@yocto:/sys/devices/soc0/gpio-keys# We want 'echo 77 > keys' to report an error, but silence to give us an illusion that all is 'ok'. Signed-off-by: Peng Fan <van.freenix@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-24Input: sur40 - fix error return codeJulia Lawall
Propagate error code on failure, or upper layers will be confused by returned 0 (success) code. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input layer fix from Dmitry Torokhov: "A small fixup to gpio_keys_polled driver" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: gpio_keys_polled - request GPIO pin as input.
2015-08-21ALSA: ac97: Switch to dev_pm_opsLars-Peter Clausen
Convert the ac97_bus from legacy suspend/resume callbacks to dev_pm_ops. Since there isn't anything special to do at the bus level the bus driver does not have to implement any callbacks. The device driver core will automatically pick up and execute the device's PM ops. As there is only a single AC'97 driver implementing suspend and resume, update both the core and driver at the same time to avoid unnecessary code churn. While we are at it also drop the ifdefs around the suspend/resume functions to increase compile test coverage. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-08-21Input: sentelic - silence some underflow warningsDan Carpenter
I have a static checker that complains when we check for an upper bound but don't have a corresponding check for a lower bound. With this code, the upper bound check seems not really required, so it is not a bug to leave the lower bound check out as well. But let's silence the warning by making these variables unsigned. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-20Input: zhenhua - switch to using bitrev8()Yalin Wang
Instead of custom zhenhua_bitreverse() let's use generic bitrev8(). Signed-off-by: Yalin Wang <yalin.wang2010@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-20Input: gpio_keys_polled - request GPIO pin as input.Vincent Pelletier
GPIOF_IN flag was lost in: Commit 633a21d80b4a("input: gpio_keys_polled: Add support for GPIO descriptors"). Without this flag, legacy code path (for non-descriptor GPIO declarations) would configure GPIO as output (0 meaning GPIOF_DIR_OUT | GPIOF_INIT_LOW). Cc: stable@vger.kernel.org Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-19Input: cros_ec_keyb - replace KEYBOARD_CROS_EC dependencyJavier Martinez Canillas
The ChromeOS EC keyboard driver config depends on CROS_EC_PROTO but MFD_CROS_EC selects CROS_EC_PROTO instead. Mixing select and depends on is bad practice as it may lead to circular Kconfig dependencies. Since the platform device that is matched with the keyboard driver is registered by the ChromeOS EC mfd driver, KEYBOARD_CROS_EC really should depend on MFD_CROS_EC. And because this config option selects CROS_EC_PROTO, that dependency is met as well. So make the driver to depend on MFD_CROS_EC instead of CROS_EC_PROTO. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-18Merge tag 'imx-soc-4.3' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/soc The i.MX SoC changes for 4.3: - Add i.MX6 Ultralite SoC support, which is the newest addition to i.MX6 family. It integrates a single Cortex-A7 core and a power management module that reduces the complexity of external power supply and simplifies power sequencing. - Change SNVS RTC driver to use syscon interface for register access, and add SNVS power key driver support. - Add a second clock for mxc rtc driver, and support device tree probe for the driver. - Add FEC MAC reference clock and phy fixup initialization for i.MX6UL platform. * tag 'imx-soc-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: rtc: snvs: select option REGMAP_MMIO ARM: imx6ul: add fec MAC refrence clock and phy fixup init ARM: imx6ul: add fec bits to GPR syscon definition rtc: mxc: add support of device tree dt-binding: document the binding for mxc rtc rtc: mxc: use a second rtc clock input: snvs_pwrkey: use "wakeup-source" as deivce tree property name Document: devicetree: input: imx: i.mx snvs power device tree bindings input: keyboard: imx: add snvs power key driver Document: dt: fsl: snvs: change support syscon rtc: snvs: use syscon to access register ARM: imx: add low-level debug support for i.mx6ul ARM: imx: add i.mx6ul msl support Signed-off-by: Olof Johansson <olof@lixom.net>
2015-08-18Merge branch 'x86/urgent' into x86/asm to fix up conflicts and to pick up fixesIngo Molnar
Conflicts: arch/x86/entry/entry_64_compat.S arch/x86/math-emu/get_address.c Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-08-16Input: cap11xx - add LED supportMatt Ranostay
Several cap11xx variants have LEDs that be can be controlled; let's plug the driver into the LED subsystem. Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-13Input: elants_i2c - fix for devm_gpiod_get API changeStephen Rothwell
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>
2015-08-09Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input subsystem fixes from Dmitry Torokhov: "Just small ALPS and Elan touchpads, and other driver fixups" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: elantech - add special check for fw_version 0x470f01 touchpad Input: twl4030-vibra - fix ERROR: Bad of_node_put() warning Input: alps - only Dell laptops have separate button bits for v2 dualpoint sticks Input: axp20x-pek - add module alias Input: turbografx - fix potential out of bound access
2015-08-07Input: elan_i2c - enable asynchronous probingDmitry Torokhov
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 <dmitry.torokhov@gmail.com>
2015-08-07Input: elants_i2c - enable asynchronous probingDmitry Torokhov
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 Torokhov
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>
2015-08-07Input: do not emit unneeded EV_SYN when suspendingDmitry Torokhov
Do not emit EV_SYN/SYN_REPORT on suspend if there were no keys that are still pressed as we are suspending the device (and in all other cases when input core is forcibly releasing keys via input_dev_release_keys() call). Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-07Input: elantech - add special check for fw_version 0x470f01 touchpadDuson Lin
It is no need to check the packet[0] for sanity check when doing elantech_packet_check_v4() function for fw_version = 0x470f01 touchpad. Signed-off by: Duson Lin <dusonlin@emc.com.tw> Reviewed-by: Ulrik De Bie <ulrik.debie-os@e2big.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-07Input: Remove the max77843 haptic driverKrzysztof Kozlowski
The max77693 haptic driver supports Maxim 77843 device so remove the max77843 driver. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-07Input: max77693: Add support for Maxim 77843Krzysztof Kozlowski
The Maxim 77843 haptic driver differs from 77693 by: 1. Setting the bias. 2. Different configuration register. 3. Not enabling the low-sys DAC. 4. Using same regmap for PMIC and haptic blocks. Incorporate all differences into max77693 haptic driver so both devices can be supported. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-07Input: max77693: Prepare for adding support for Maxim 77843Krzysztof Kozlowski
Prepare the driver for supporting two devices: Maxim 77693 and 77843: 1. Add table of device ids and store current device type for later usage. 2. Differentiate the haptic device configuration. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-07Input: max77693: Remove a read-only pwm_divisor fieldKrzysztof Kozlowski
Storing a predefined PWM divisor in state container structure is meaningless. The field, after initialization, is only read so this only obfuscates the code. Remove the field and use directly enum value. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-07treewide: Fix typo in printkMasanari Iida
This patch fix spelling typo inv various part of sources. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.com>
2015-08-05Input: twl4030-vibra - fix ERROR: Bad of_node_put() warningMarek Belisko
Fix following: [ 8.862274] ERROR: Bad of_node_put() on /ocp/i2c@48070000/twl@48/audio [ 8.869293] CPU: 0 PID: 1003 Comm: modprobe Not tainted 4.2.0-rc2-letux+ #1175 [ 8.876922] Hardware name: Generic OMAP36xx (Flattened Device Tree) [ 8.883514] [<c00159e0>] (unwind_backtrace) from [<c0012488>] (show_stack+0x10/0x14) [ 8.891693] [<c0012488>] (show_stack) from [<c05cb810>] (dump_stack+0x78/0x94) [ 8.899322] [<c05cb810>] (dump_stack) from [<c02cfd5c>] (kobject_release+0x68/0x7c) [ 8.907409] [<c02cfd5c>] (kobject_release) from [<bf0040c4>] (twl4030_vibra_probe+0x74/0x188 [twl4030_vibra]) [ 8.917877] [<bf0040c4>] (twl4030_vibra_probe [twl4030_vibra]) from [<c03816ac>] (platform_drv_probe+0x48/0x90) [ 8.928497] [<c03816ac>] (platform_drv_probe) from [<c037feb4>] (really_probe+0xd4/0x238) [ 8.937103] [<c037feb4>] (really_probe) from [<c0380160>] (driver_probe_device+0x30/0x48) [ 8.945678] [<c0380160>] (driver_probe_device) from [<c03801e0>] (__driver_attach+0x68/0x8c) [ 8.954589] [<c03801e0>] (__driver_attach) from [<c037ea60>] (bus_for_each_dev+0x50/0x84) [ 8.963226] [<c037ea60>] (bus_for_each_dev) from [<c037f828>] (bus_add_driver+0xcc/0x1e4) [ 8.971832] [<c037f828>] (bus_add_driver) from [<c0380b60>] (driver_register+0x9c/0xe0) [ 8.980255] [<c0380b60>] (driver_register) from [<c00097e0>] (do_one_initcall+0x100/0x1b8) [ 8.988983] [<c00097e0>] (do_one_initcall) from [<c00b8008>] (do_init_module+0x58/0x1c0) [ 8.997497] [<c00b8008>] (do_init_module) from [<c00b8cac>] (SyS_init_module+0x54/0x64) [ 9.005950] [<c00b8cac>] (SyS_init_module) from [<c000ed20>] (ret_fast_syscall+0x0/0x54) [ 9.015838] input: twl4030:vibrator as /devices/platform/68000000.ocp/48070000.i2c/i2c-0/0-0048/48070000.i2c:twl@48:audio/input/input2 node passed to of_find_node_by_name is put inside that function and new node is returned if found. Free returned node not already freed node. Signed-off-by: Marek Belisko <marek@goldelico.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-05Input: elants_i2c - disable idle mode before updating firmwareJames Chen
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>
2015-08-04Input: atmel_mxt_ts - remove warning on zero T44 countNick Dyer
Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-04Input: atmel_mxt_ts - initialise input slots with INPUT_MT_DIRECTNick Dyer
This indicates the device coordinates should be directly mapped to screen. This is valid since scaling/flipping/rotation should be done by configuring the MXT device. It also flags to Android using INPUT_PROP_DIRECT that the device should be treated as a touch screen by default, and removes the necessity for a default IDC file. Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-04Input: atmel_mxt_ts - disable interrupt for 50ms after resetNick Dyer
The CHG/interrupt line is momentarily set (approximately 100 ms) as an input after power-up or reset for diagnostic purposes. This may cause spurious interrupts, so disable interrupt handler during this period. Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-04Input: atmel_mxt_ts - improve device tree parsingNick Dyer
Use function rather than loop, define np to reduce wrapping. Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-04Input: atmel_mxt_ts - suspend/resume causes panic if input_dev fails to initPan Xinhui
input_dev may be NULL if mxt_initialize_input_device fails. But pm ops is still available and suspend/resume assume input_dev is not NULL. To fix this issue, we add a check if (!input_dev). Signed-off-by: Pan Xinhui <xinhuix.pan@intel.com> Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-04Input: atmel_mxt_ts - remove unused definesNick Dyer
Many of these values are out of date and they aren't used in the driver - all they do is increase the size of the kernel source. Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk> Acked-by: Benson Leung <bleung@chromium.org> Acked-by: Yufeng Shen <miletus@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-04Input: atmel_mxt_ts - use deep sleep mode when stoppedNick Dyer
The hardcoded 0x83 CTRL setting overrides other settings in that byte, enabling extra reporting that may not be useful on a particular platform. Implement improved suspend mechanism via deep sleep. By writing zero to both the active and idle cycle times the maXTouch device can be put into a deep sleep mode, using minimal power. It is necessary to issue a calibrate command after the chip has spent any time in deep sleep, however a soft reset is unnecessary. Use the old method on Chromebook Pixel via platform data option. This patch also deals with the situation where the power configuration is zero on probe, which would mean that the device never wakes up to execute commands. After a config download, the T7 power configuration may have changed so it is necessary to re-read it. Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk> Acked-by: Benson Leung <bleung@chromium.org> Acked-by: Yufeng Shen <miletus@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-04Input: Allow compile test of GPIO consumers if !GPIOLIBGeert Uytterhoeven
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer functionality only, can still be compiled if GPIOLIB is not enabled. Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where appropriate. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-03Input: alps - only Dell laptops have separate button bits for v2 dualpoint ↵Hans de Goede
sticks It turns out that only Dell laptops have the separate button bits for v2 dualpoint sticks and that commit 92bac83dd79e ("Input: alps - non interleaved V2 dualpoint has separate stick button bits") causes regressions on Toshiba laptops. This commit adds a check for Dell laptops to the code for handling these extra button bits, fixing this regression. This patch has been tested on a Dell Latitude D620 to make sure that it does not reintroduce the original problem. Reported-and-tested-by: Douglas Christman <douglaschristman@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-03Input: axp20x-pek - add module aliasChen-Yu Tsai
Add a proper module alias so the driver can be autoloaded when the parent axp20x mfd driver registers its cells. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Carlo Caione <carlo@caione.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-03Input: turbografx - fix potential out of bound accessDmitry Torokhov
Patch 17dd3f0f7aa7: "[PATCH] drivers/input/joystick: convert to dynamic input_dev allocation" from Sep 15, 2005, leads to the following static checker warning: drivers/input/joystick/turbografx.c:235 tgfx_probe() error: buffer overflow 'tgfx_buttons' 5 <= 5 drivers/input/joystick/turbografx.c 195 for (i = 0; i < n_devs; i++) { 196 if (n_buttons[i] < 1) 197 continue; 198 199 if (n_buttons[i] > 6) { ^^^^^^^^^^^^^^^^ Possibly off by one. >= 6. Let's change the upper value to ARRAY_SIZE(tgfx_buttons) to ensure we do not reach past the end of the array. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-03Input: zforce - make the interrupt GPIO optionalDirk Behme
Add support for hardware which uses an I2C Serializer / Deserializer (SerDes) to communicate with the zFroce touch driver. In this case the SerDes will be configured as an interrupt controller and the zForce driver will have no access to poll the GPIO line. To support this, we add two dedicated new GPIOs in the device tree: reset-gpios and irq-gpios, with the irq-gpios being optional. To not break the existing device trees, the index based 'gpios' entries are still supported, but marked as deprecated. With this, if the interrupt GPIO is available, either via the old or new device tree style, the while loop will read and handle the packets as long as the GPIO indicates that the interrupt is asserted (existing, unchanged driver behavior). If the interrupt GPIO isn't available, i.e. not configured via the new device tree style, we are falling back to one read per ISR invocation (new behavior to support the SerDes). Note that the gpiod functions help to handle the optional GPIO: devm_gpiod_get_index_optional() will return NULL in case the interrupt GPIO isn't available. And gpiod_get_value_cansleep() does cover this, too, by returning 0 in this case. Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com> Reviewed-by: Heiko Stuebner <heiko.stuebner@bq.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-08-03thermal: consistently use int for temperaturesSascha Hauer
The thermal code uses int, long and unsigned long for temperatures in different places. Using an unsigned type limits the thermal framework to positive temperatures without need. Also several drivers currently will report temperatures near UINT_MAX for temperatures below 0°C. This will probably immediately shut the machine down due to overtemperature if started below 0°C. 'long' is 64bit on several architectures. This is not needed since INT_MAX °mC is above the melting point of all known materials. Consistently use a plain 'int' for temperatures throughout the thermal code and the drivers. This only changes the places in the drivers where the temperature is passed around as pointer, when drivers internally use another type this is not changed. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Lukasz Majewski <l.majewski@samsung.com> Reviewed-by: Darren Hart <dvhart@linux.intel.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Peter Feuerer <peter@piie.net> Cc: Punit Agrawal <punit.agrawal@arm.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Jean Delvare <jdelvare@suse.de> Cc: Peter Feuerer <peter@piie.net> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Lukasz Majewski <l.majewski@samsung.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: linux-acpi@vger.kernel.org Cc: platform-driver-x86@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-omap@vger.kernel.org Cc: linux-samsung-soc@vger.kernel.org Cc: Guenter Roeck <linux@roeck-us.net> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Darren Hart <dvhart@infradead.org> Cc: lm-sensors@lm-sensors.org Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2015-07-31Merge branch 'x86/urgent' into x86/asm, before applying dependent patchesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-07-30Input: cyapa - do not try to enable proximity reporting on older devicesDudley Du
Avoid the driver generate warning message when the cyapa driver working with the old Gen5 trackpad device which does not support the proximity function. Those old Gen5 trackpad device all have the platform version less than 2. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-07-30Input: cyapa - introduce device tree bindingDudley Du
Add device tree support for Cypress trackpad devices. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-07-30Input: cyapa - add regulator vcc supportDudley Du
We need to power up the chip before we can initialize it. On systems that delegate task of powering up regulators to firmware we assume that we'll be simply given a dummy regulator. Signed-off-by: Dudley Du <dudl@cypress.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-07-30Input: touchscreen - export OF module alias informationJavier Martinez Canillas
The I2C core always reports the MODALIAS uevent as "i2c:<client name" regardless if the driver was matched using the I2C id_table or the of_match_table. So technically there's no need for a driver to export the OF table since currently it's not used. In fact, the I2C device ID table is mandatory for I2C drivers since a i2c_device_id is passed to the driver's probe function even if the I2C core used the OF table to match the driver. And since the I2C core uses different tables, OF-only drivers needs to have duplicated data that has to be kept in sync and also the dev node compatible manufacturer prefix is stripped when reporting the MODALIAS. To avoid the above, the I2C core behavior may be changed in the future to not require an I2C device table for OF-only drivers and report the OF module alias. So, it's better to also export the OF table to prevent breaking module autoloading if that happens. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>