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pwm: add devm_pwm_get() and devm_pwm_put()

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Add resource managed variants of pwm_get() and pwm_put() for
convenience. Code is largely inspired by the equivalent devm functions
of the regulator framework.

Signed-off-by: Alexandre Courbot <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
This commit is contained in:
Alexandre Courbot 2012-08-01 19:20:58 +09:00 • committed by Thierry Reding
commit 6354316dbe
4 changed files with 67 additions and 1 deletions
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3
Documentation/pwm.txt
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@ -36,7 +36,8 @@ Legacy users can request a PWM device using pwm_request() and free it
after usage with pwm_free().
New users should use the pwm_get() function and pass to it the consumer
device or a consumer name. pwm_put() is used to free the PWM device.
device or a consumer name. pwm_put() is used to free the PWM device. Managed
variants of these functions, devm_pwm_get() and devm_pwm_put(), also exist.
After being requested a PWM has to be configured using: