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| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2019-01-09 17:19:05 +0900 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2019-03-04 12:14:05 +0100 |
| commit | 7f68ce8287d3b25a70455aec18ff678a908d49ee (patch) | |
| tree | 0cb52f72f3a27a736137a0b8578f0bd05b793d01 /drivers/pwm/pwm-meson.c | |
| parent | 74d0c3b2050927f364e3320091f234c108bd845d (diff) | |
| download | lwn-7f68ce8287d3b25a70455aec18ff678a908d49ee.tar.gz lwn-7f68ce8287d3b25a70455aec18ff678a908d49ee.zip | |
pwm: rcar: Add support "atomic" API
This patch adds support for "atomic" API. This behavior differs with
legacy APIs a little.
Legacy APIs:
The PWMCNT register will be updated in rcar_pwm_config() even if
the PWM state is disabled.
Atomic API:
The PWMCNT register will be updated in rcar_pwm_apply() only if
the PWM state is enabled. Otherwize, if a PWM runs with 30% duty
cycles and the pwm_apply_state() is called with state->enabled = 0,
->duty_cycle = 60 and ->period = 100, this is possible to output
a 60% duty cycle.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-meson.c')
0 files changed, 0 insertions, 0 deletions