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path: root/drivers/input/misc/pwm-beeper.c
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2023-12-20pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()Sean Young1-2/+2
In order to introduce a pwm api which can be used from atomic context, we will need two functions for applying pwm changes: int pwm_apply_might_sleep(struct pwm *, struct pwm_state *); int pwm_apply_atomic(struct pwm *, struct pwm_state *); This commit just deals with renaming pwm_apply_state(), a following commit will introduce the pwm_apply_atomic() function. Acked-by: Uwe Kleine-König <[email protected]> Acked-by: Guenter Roeck <[email protected]> Acked-by: Mark Brown <[email protected]> Acked-by: Dmitry Torokhov <[email protected]> # for input Acked-by: Hans de Goede <[email protected]> Acked-by: Jani Nikula <[email protected]> Acked-by: Lee Jones <[email protected]> Signed-off-by: Sean Young <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2023-07-07Input: gpio-vibra - simplify with dev_err_probe()Krzysztof Kozlowski1-14/+5
Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and also it prints the error value. Signed-off-by: Krzysztof Kozlowski <[email protected]> Reviewed-by: Hans de Goede <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Dmitry Torokhov <[email protected]>
2023-01-09Input: pwm-beeper - switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()Jonathan Cameron1-5/+5
SIMPLE_DEV_PM_OPS() is deprecated as it requires explicit protection against unused function warnings. The new combination of pm_sleep_ptr() and DEFINE_SIMPLE_DEV_PM_OPS() allows the compiler to see the functions, thus suppressing the warning, but still allowing the unused code to be removed. Thus also drop the __maybe_unused markings. Signed-off-by: Jonathan Cameron <[email protected]> Cc: Lars-Peter Clausen <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Dmitry Torokhov <[email protected]>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 151Thomas Gleixner1-10/+1
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 35 file(s). Signed-off-by: Thomas Gleixner <[email protected]> Reviewed-by: Armijn Hemel <[email protected]> Reviewed-by: Richard Fontana <[email protected]> Reviewed-by: Allison Randal <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2017-03-07Input: pwm-beeper - support customized freq for SND_BELLGuan Ben1-1/+14
Extend the pwm-beeper driver to support customized frequency for SND_BELL from device properties. Signed-off-by: Guan Ben <[email protected]> Signed-off-by: Mark Jonas <[email protected]> Signed-off-by: Heiko Schocher <[email protected]> Acked-by: Rob Herring <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2017-01-22Input: pwm-beeper - switch to using "atomic" PWM APIDmitry Torokhov1-9/+17
The "atomic" API allows us to configure PWM period and duty cycle and enable it in one call. Reviewed-by: Thierry Reding <[email protected]> Tested-by: David Lechner <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2017-01-22Input: pwm-beeper - add optional amplifier regulatorDavid Lechner1-13/+50
This adds an optional regulator to the pwm-beeper device. This regulator acts as an amplifier. The amplifier is only enabled while beeping in order to reduce power consumption. Tested on LEGO MINDSTORMS EV3, which has a speaker connected to PWM through an amplifier. Signed-off-by: David Lechner <[email protected]> Acked-by: Rob Herring <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2017-01-22Input: pwm-beeper - suppress error message on probe deferDavid Lechner1-1/+3
This suppress printing an error message when pwm_get returns -EPROBE_DEFER. Otherwise you get a bunch of noise in the kernel log. Signed-off-by: David Lechner <[email protected]> Reviewed-by: Thierry Reding <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2017-01-22Input: pwm-beeper - fix race when suspendingDmitry Torokhov1-3/+18
Usually userspace sends SND_BELL and SND_TONE events, and by the time pwm_beeper_suspend() runs userpsace is already frozen, but theoretically in-kernel users may send these events too, and that may cause pwm_beeper_event() scheduling another work after we canceled it. Let's introduce a "suspended" flag and check it in pwm_beeper_event() to avoid this race. Reviewed-by: Thierry Reding <[email protected]> Tested-by: David Lechner <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2017-01-22Input: pwm-beeper - use input_set_capability()Dmitry Torokhov1-2/+2
Instead of manipulating capability bits directly, let's use input_set_capability() API. Reviewed-by: Thierry Reding <[email protected]> Tested-by: David Lechner <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2017-01-22Input: pwm-beeper - switch to using managed resourcesDmitry Torokhov1-34/+10
Use of managed resources (devm) simplifies error handling and tear down of the driver. Reviewed-by: Thierry Reding <[email protected]> Tested-by: David Lechner <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2017-01-22Input: pwm-beeper - remove calls to legacy pwm_request APIDmitry Torokhov1-6/+0
There are no more users of pwm-beeper driver in mainline relying on this legacy API, so let's remove it and simplify the driver code. Acked-by: Thierry Reding <[email protected]> Tested-by: David Lechner <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2016-05-27Merge branch 'for-linus' of ↵Linus Torvalds1-21/+48
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull more input subsystem updates from Dmitry Torokhov: "Just a few more driver fixes; new drivers will be coming in the next merge window" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: pwm-beeper - fix - scheduling while atomic Input: xpad - xbox one elite controller support Input: xpad - add more third-party controllers Input: xpad - prevent spurious input from wired Xbox 360 controllers Input: xpad - move pending clear to the correct location Input: uinput - handle compat ioctl for UI_SET_PHYS
2016-05-27Input: pwm-beeper - fix - scheduling while atomicManfred Schlaegl1-21/+48
Pwm config may sleep so defer it using a worker. On a Freescale i.MX53 based board we ran into "BUG: scheduling while atomic" because input_inject_event locks interrupts, but imx_pwm_config_v2 sleeps. Tested on Freescale i.MX53 SoC with 4.6.0. Signed-off-by: Manfred Schlaegl <[email protected]> Cc: [email protected] Signed-off-by: Dmitry Torokhov <[email protected]>
2016-05-17input: misc: pwm-beeper: Explicitly apply PWM config extracted from pwm_argsBoris Brezillon1-0/+6
Call pwm_apply_args() just after requesting the PWM device so that the polarity and period are initialized according to the information provided in pwm_args. This is an intermediate state, and pwm_apply_args() should be dropped as soon as the atomic PWM infrastructure is in place and the driver makes use of it. Signed-off-by: Boris Brezillon <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2015-09-03Input: pwm-beeper - fix module autoload for OF platform driverLuis de Bethencourt1-0/+1
This platform driver has a OF device ID table but the OF module alias information is not created so module autoloading won't work. Signed-off-by: Luis de Bethencourt <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2015-03-12Input: pwm-beeper - remove useless call to pwm_config()Olivier Sobrie1-1/+0
Calling pwm_config() with a period equal to zero always results in error (-EINVAL) and pwm chip config method is never called. Signed-off-by: Olivier Sobrie <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2015-03-07Input: pwm-beeper - remove unneeded PWM_BEEPER_PM_OPS defineDmitry Torokhov1-7/+1
The device->pm pointer is always present so there is no need to do tricks with conditionally defining the pointer. Signed-off-by: Dmitry Torokhov <[email protected]>
2014-12-17Merge branch 'for-linus' of ↵Linus Torvalds1-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input subsystem updates from Dmitry Torokhov: "Two new drivers for Elan hardware (for I2C touchpad and touchscreen found in several Chromebooks and other devices), a driver for Goodix touch panel, and small fixes to Cypress I2C trackpad and other input drivers. Also we switched to use __maybe_unused instead of gating suspend/ resume code with #ifdef guards to get better compile coverage" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (27 commits) Input: gpio_keys - fix warning regarding uninitialized 'button' variable Input: add support for Elan eKTH I2C touchscreens Input: gpio_keys - fix warning regarding uninitialized 'irq' variable Input: cyapa - use 'error' for error codes Input: cyapa - fix resuming the device Input: gpio_keys - add device tree support for interrupt only keys Input: amikbd - allocate temporary keymap buffer on the stack Input: amikbd - fix build if !CONFIG_HW_CONSOLE Input: lm8323 - missing error check in lm8323_set_disable() Input: initialize device counter variables with -1 Input: initialize input_no to -1 to avoid subtraction Input: i8042 - do not try to load on Intel NUC D54250WYK Input: atkbd - correct MSC_SCAN events for force_release keys Input: cyapa - switch to using managed resources Input: lifebook - use "static inline" instead of "inline" in lifebook.h Input: touchscreen - use __maybe_unused instead of ifdef around suspend/resume Input: mouse - use __maybe_unused instead of ifdef around suspend/resume Input: misc - use __maybe_unused instead of ifdef around suspend/resume Input: cap11xx - support for irq-active-high option Input: cap11xx - add support for various cap11xx devices ...
2014-11-02Input: misc - use __maybe_unused instead of ifdef around suspend/resumeJingoo Han1-3/+3
Use __maybe_unused instead of ifdef guards around suspend/resume functions, in order to increase build coverage and fix build warnings. Signed-off-by: Jingoo Han <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2014-10-20input: misc: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <[email protected]>
2013-12-06Input: use dev_get_platdata()Jingoo Han1-1/+1
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Jingoo Han <[email protected]> Acked-by: Fugang Duan <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2013-10-06Input: pwm-beeper - include linux/of.h headerSachin Kamat1-0/+1
'of_match_ptr' is defined in linux/of.h. Include it explicitly. Signed-off-by: Sachin Kamat <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2013-08-12Input: pwm-beeper - add CONFIG_PM_SLEEP to suspend/resumeJingoo Han1-1/+1
Add CONFIG_PM_SLEEP to suspend/resume functions to fix the build warnings when CONFIG_PM_SLEEP is not selected. This is because sleep PM callbacks defined by SET_SYSTEM_SLEEP_PM_OPS are only used when the CONFIG_PM_SLEEP is enabled. drivers/input/misc/pwm-beeper.c:147:12: warning: 'pwm_beeper_suspend' defined but not used [-Wunused-function] drivers/input/misc/pwm-beeper.c:157:12: warning: 'pwm_beeper_resume' defined but not used [-Wunused-function] Signed-off-by: Jingoo Han <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2013-05-05Input: pwm-beeper - remove redundant platform_set_drvdata()Sachin Kamat1-1/+0
Commit 0998d06310 (device-core: Ensure drvdata = NULL when no driver is bound) removes the need to set driver data field to NULL. Signed-off-by: Sachin Kamat <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2012-11-24Input: remove use of __devexitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <[email protected]> Acked-by: Mark Brown <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2012-11-24Input: remove use of __devinitBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <[email protected]> Acked-by: Mark Brown <[email protected]> Acked-by: Javier Martinez Canillas <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2012-11-24Input: remove use of __devexit_pBill Pemberton1-1/+1
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <[email protected]> Acked-by: Russell King <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2012-11-03Input: pwm-beeper - add devicetree probing supportSascha Hauer1-1/+13
A very simple binding, the only property is the phandle to the PWM. Signed-off-by: Sascha Hauer <[email protected]> Reviewed-by: Thierry Reding <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2011-11-30Input: misc - use macro module_platform_driver()JJ Ding1-12/+1
Commit 940ab88962bc1aff3273a8356d64577a6e386736 introduced a new macro to save some platform_driver boilerplate code. Use it. Signed-off-by: JJ Ding <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
2010-07-14Input: Add pwm beeper driverLars-Peter Clausen1-0/+199
This patch adds a simple driver which allows to use pwm based beepers (for example piezo elements) as a pcspkr-like device. Signed-off-by: Lars-Peter Clausen <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
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