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OF_PWM_GET(9) Pulse-Width Modulation (PWM) OF_PWM_GET(9)

NAME

of_pwm_get - request a PWM via the PWM framework

SYNOPSIS

struct pwm_device * of_pwm_get(struct device_node * np, const char * con_id);

ARGUMENTS

np

device node to get the PWM from

con_id

consumer name

DESCRIPTION

Returns the PWM device parsed from the phandle and index specified in the “pwms” property of a device tree node or a negative error-code on failure. Values parsed from the device tree are stored in the returned PWM device object.

If con_id is NULL, the first PWM device listed in the “pwms” property will be requested. Otherwise the “pwm-names” property is used to do a reverse lookup of the PWM index. This also means that the “pwm-names” property becomes mandatory for devices that look up the PWM device via the con_id parameter.

RETURN

A pointer to the requested PWM device or an ERR_PTR-encoded error code on failure.

COPYRIGHT

January 2017 Kernel Hackers Manual 4.8.