pwm: Introduce the pwm_args concept
authorBoris Brezillon <boris.brezillon@free-electrons.com>
Thu, 14 Apr 2016 19:17:21 +0000 (21:17 +0200)
committerThierry Reding <thierry.reding@gmail.com>
Tue, 3 May 2016 11:44:37 +0000 (13:44 +0200)
commite39c0df1be5a97e0910b09af1530bdf3de057a06
tree3299bb34c94cd6b989ecd54ff7cfcc9cc962d9ff
parentf55532a0c0b8bb6148f4e07853b876ef73bc69ca
pwm: Introduce the pwm_args concept

Currently the PWM core mixes the current PWM state with the per-platform
reference config (specified through the PWM lookup table, DT definition
or directly hardcoded in PWM drivers).

Create a struct pwm_args to store this reference configuration, so that
PWM users can differentiate between the current and reference
configurations.

Patch all places where pwm->args should be initialized. We keep the
pwm_set_polarity/period() calls until all PWM users are patched to use
pwm_args instead of pwm_get_period/polarity().

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[thierry.reding@gmail.com: reword kerneldoc comments]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
drivers/pwm/core.c
drivers/pwm/pwm-clps711x.c
drivers/pwm/pwm-pxa.c
include/linux/pwm.h