diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2021-06-07 15:24:55 +0300 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2021-06-30 19:12:19 +0200 |
| commit | e5c38ba9f2813beb8cb80ef3f5065bfe98a9a450 (patch) | |
| tree | 07ba36cff3ed3919cbb68cc7e72bbf70af966219 /drivers/pwm | |
| parent | ca06616b1eed31126138aaf1a6b5bdd149b61da8 (diff) | |
| download | linux-e5c38ba9f2813beb8cb80ef3f5065bfe98a9a450.tar.bz2 | |
pwm: core: Reuse fwnode_to_pwmchip() in ACPI case
In ACPI case we may use matching by fwnode as provided via
fwnode_to_pwmchip(). This makes device_to_pwmchip() not needed
anymore.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/core.c | 31 |
1 files changed, 1 insertions, 30 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c index 26765d4f29bd..b72fb77aea60 100644 --- a/drivers/pwm/core.c +++ b/drivers/pwm/core.c @@ -827,28 +827,6 @@ put: } EXPORT_SYMBOL_GPL(of_pwm_get); -#if IS_ENABLED(CONFIG_ACPI) -static struct pwm_chip *device_to_pwmchip(struct device *dev) -{ - struct pwm_chip *chip; - - mutex_lock(&pwm_lock); - - list_for_each_entry(chip, &pwm_chips, list) { - struct acpi_device *adev = ACPI_COMPANION(chip->dev); - - if ((chip->dev == dev) || (adev && &adev->dev == dev)) { - mutex_unlock(&pwm_lock); - return chip; - } - } - - mutex_unlock(&pwm_lock); - - return ERR_PTR(-EPROBE_DEFER); -} -#endif - /** * acpi_pwm_get() - request a PWM via parsing "pwms" property in ACPI * @fwnode: firmware node to get the "pwm" property from @@ -869,9 +847,7 @@ static struct pwm_chip *device_to_pwmchip(struct device *dev) static struct pwm_device *acpi_pwm_get(struct fwnode_handle *fwnode) { struct pwm_device *pwm = ERR_PTR(-ENODEV); -#if IS_ENABLED(CONFIG_ACPI) struct fwnode_reference_args args; - struct acpi_device *acpi; struct pwm_chip *chip; int ret; @@ -881,14 +857,10 @@ static struct pwm_device *acpi_pwm_get(struct fwnode_handle *fwnode) if (ret < 0) return ERR_PTR(ret); - acpi = to_acpi_device_node(args.fwnode); - if (!acpi) - return ERR_PTR(-EINVAL); - if (args.nargs < 2) return ERR_PTR(-EPROTO); - chip = device_to_pwmchip(&acpi->dev); + chip = fwnode_to_pwmchip(args.fwnode); if (IS_ERR(chip)) return ERR_CAST(chip); @@ -901,7 +873,6 @@ static struct pwm_device *acpi_pwm_get(struct fwnode_handle *fwnode) if (args.nargs > 2 && args.args[2] & PWM_POLARITY_INVERTED) pwm->args.polarity = PWM_POLARITY_INVERSED; -#endif return pwm; } |