diff options
| author | David Lechner <dlechner@baylibre.com> | 2024-10-29 16:18:49 -0500 |
|---|---|---|
| committer | Uwe Kleine-König <ukleinek@kernel.org> | 2024-11-03 21:13:21 +0100 |
| commit | 2ea25aab938a250bdf3148acd15359b56b91b40e (patch) | |
| tree | 9bd66a20cf822fc7ed63c77e92fc187564214a42 /include/linux/pwm.h | |
| parent | fdb62922ae89c17963f80abdd14b4d9f053bc962 (diff) | |
pwm: core: export pwm_get_state_hw()
Export the pwm_get_state_hw() function. This is useful in cases where
we want to know what the hardware is actually doing, rather than what
what we requested it should do.
Locking had to be rearranged to ensure that the chip is still
operational before trying to access ops now that this can be called
from outside the pwm core.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20241029-pwm-export-pwm_get_state_hw-v2-1-03ba063a3230@baylibre.com
[ukleinek: Add dummy for !CONFIG_PWM]
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Diffstat (limited to 'include/linux/pwm.h')
| -rw-r--r-- | include/linux/pwm.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/pwm.h b/include/linux/pwm.h index f1cb1e5b0a36..78827f312407 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -370,6 +370,7 @@ int pwm_get_waveform_might_sleep(struct pwm_device *pwm, struct pwm_waveform *wf int pwm_set_waveform_might_sleep(struct pwm_device *pwm, const struct pwm_waveform *wf, bool exact); int pwm_apply_might_sleep(struct pwm_device *pwm, const struct pwm_state *state); int pwm_apply_atomic(struct pwm_device *pwm, const struct pwm_state *state); +int pwm_get_state_hw(struct pwm_device *pwm, struct pwm_state *state); int pwm_adjust_config(struct pwm_device *pwm); /** @@ -494,6 +495,11 @@ static inline int pwm_apply_atomic(struct pwm_device *pwm, return -EOPNOTSUPP; } +static inline int pwm_get_state_hw(struct pwm_device *pwm, struct pwm_state *state) +{ + return -EOPNOTSUPP; +} + static inline int pwm_adjust_config(struct pwm_device *pwm) { return -EOPNOTSUPP; |