kernel/drivers/input/misc/pwm-beeper.c, branch linux-4.16.y

Input: pwm-beeper - support customized freq for SND_BELL

2017-03-07T18:39:23Z

Extend the pwm-beeper driver to support customized frequency for SND_BELL from device properties. Signed-off-by: Guan Ben Signed-off-by: Mark Jonas Signed-off-by: Heiko Schocher Acked-by: Rob Herring Signed-off-by: Dmitry Torokhov

Input: pwm-beeper - switch to using "atomic" PWM API

2017-01-22T08:26:36Z

The "atomic" API allows us to configure PWM period and duty cycle and enable it in one call. Reviewed-by: Thierry Reding Tested-by: David Lechner Signed-off-by: Dmitry Torokhov

Input: pwm-beeper - add optional amplifier regulator

2017-01-22T08:23:22Z

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 Acked-by: Rob Herring Signed-off-by: Dmitry Torokhov

Input: pwm-beeper - suppress error message on probe defer

2017-01-22T08:23:20Z

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 Reviewed-by: Thierry Reding Signed-off-by: Dmitry Torokhov

Input: pwm-beeper - fix race when suspending

2017-01-22T08:23:19Z

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 Tested-by: David Lechner Signed-off-by: Dmitry Torokhov

Input: pwm-beeper - use input_set_capability()

2017-01-22T08:23:18Z

Instead of manipulating capability bits directly, let's use input_set_capability() API. Reviewed-by: Thierry Reding Tested-by: David Lechner Signed-off-by: Dmitry Torokhov

Input: pwm-beeper - switch to using managed resources

2017-01-22T08:23:17Z

Use of managed resources (devm) simplifies error handling and tear down of the driver. Reviewed-by: Thierry Reding Tested-by: David Lechner Signed-off-by: Dmitry Torokhov

Input: pwm-beeper - remove calls to legacy pwm_request API

2017-01-22T08:23:16Z

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 Tested-by: David Lechner Signed-off-by: Dmitry Torokhov

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2016-05-28T02:14:35Z

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

Input: pwm-beeper - fix - scheduling while atomic

2016-05-27T23:40:30Z

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 Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov