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| author | Jani Nikula <jani.nikula@intel.com> | 2021-12-09 15:58:34 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2021-12-09 15:58:34 +0200 |
| commit | 01dd1fa26b85167cd19b04b10e015aba3e243d08 (patch) | |
| tree | 3c6f9d8531e9ff60f56c7d978c1f8493599d3c88 /drivers/pwm/core.c | |
| parent | fd2b94a5cb0ff4bb163cdc4afaede6527eec5f7e (diff) | |
| parent | c8a04cbeedbc9f71c475141baa656f14f4879792 (diff) | |
Merge drm/drm-next into drm-intel-next
Get the dependencies for merging drm-privacy-screen support.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/pwm/core.c')
| -rw-r--r-- | drivers/pwm/core.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index fb04a439462c..93772ab8d7e3 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -152,6 +152,32 @@ of_pwm_xlate_with_flags(struct pwm_chip *pc, const struct of_phandle_args *args) } EXPORT_SYMBOL_GPL(of_pwm_xlate_with_flags); +struct pwm_device * +of_pwm_single_xlate(struct pwm_chip *pc, const struct of_phandle_args *args) +{ + struct pwm_device *pwm; + + if (pc->of_pwm_n_cells < 1) + return ERR_PTR(-EINVAL); + + /* validate that one cell is specified, optionally with flags */ + if (args->args_count != 1 && args->args_count != 2) + return ERR_PTR(-EINVAL); + + pwm = pwm_request_from_chip(pc, 0, NULL); + if (IS_ERR(pwm)) + return pwm; + + pwm->args.period = args->args[0]; + pwm->args.polarity = PWM_POLARITY_NORMAL; + + if (args->args_count == 2 && args->args[2] & PWM_POLARITY_INVERTED) + pwm->args.polarity = PWM_POLARITY_INVERSED; + + return pwm; +} +EXPORT_SYMBOL_GPL(of_pwm_single_xlate); + static void of_pwmchip_add(struct pwm_chip *chip) { if (!chip->dev || !chip->dev->of_node) |