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| author | Uwe Kleine-König <u.kleine-koenig@baylibre.com> | 2024-09-20 10:58:00 +0200 |
|---|---|---|
| committer | Uwe Kleine-König <ukleinek@kernel.org> | 2024-09-28 15:13:56 +0200 |
| commit | 1afd01db1a76cdd1d96696e3790d66c79621784c (patch) | |
| tree | 4c7ef68d0735ae30893a0420fcdfae0c07cd1b73 /drivers/pwm | |
| parent | 6c5126c6406d1c31e91f5b925c621c1c785366be (diff) | |
| download | lwn-1afd01db1a76cdd1d96696e3790d66c79621784c.tar.gz lwn-1afd01db1a76cdd1d96696e3790d66c79621784c.zip | |
pwm: Add tracing for waveform callbacks
This adds trace events for the recently introduced waveform callbacks.
With the introduction of some helper macros consistency among the
different events is ensured.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/1d71879b0de3bf01459c7a9d0f040d43eb5ace56.1726819463.git.u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/core.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 038f17dd2757..c3bdebf4cf6e 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -164,30 +164,46 @@ static int __pwm_round_waveform_tohw(struct pwm_chip *chip, struct pwm_device *p const struct pwm_waveform *wf, void *wfhw) { const struct pwm_ops *ops = chip->ops; + int ret; + + ret = ops->round_waveform_tohw(chip, pwm, wf, wfhw); + trace_pwm_round_waveform_tohw(pwm, wf, wfhw, ret); - return ops->round_waveform_tohw(chip, pwm, wf, wfhw); + return ret; } static int __pwm_round_waveform_fromhw(struct pwm_chip *chip, struct pwm_device *pwm, const void *wfhw, struct pwm_waveform *wf) { const struct pwm_ops *ops = chip->ops; + int ret; + + ret = ops->round_waveform_fromhw(chip, pwm, wfhw, wf); + trace_pwm_round_waveform_fromhw(pwm, wfhw, wf, ret); - return ops->round_waveform_fromhw(chip, pwm, wfhw, wf); + return ret; } static int __pwm_read_waveform(struct pwm_chip *chip, struct pwm_device *pwm, void *wfhw) { const struct pwm_ops *ops = chip->ops; + int ret; + + ret = ops->read_waveform(chip, pwm, wfhw); + trace_pwm_read_waveform(pwm, wfhw, ret); - return ops->read_waveform(chip, pwm, wfhw); + return ret; } static int __pwm_write_waveform(struct pwm_chip *chip, struct pwm_device *pwm, const void *wfhw) { const struct pwm_ops *ops = chip->ops; + int ret; + + ret = ops->write_waveform(chip, pwm, wfhw); + trace_pwm_write_waveform(pwm, wfhw, ret); - return ops->write_waveform(chip, pwm, wfhw); + return ret; } #define WFHWSIZE 20 |