<def f='src/src/sys/dev/wsfb/genfbvar.h' l='83' ll='88'/>
<size>32</size>
<doc f='src/src/sys/dev/wsfb/genfbvar.h' l='72'>/*
 * Integer parameter provider.  Each callback shall return 0 on success,
 * and an error(2) number on failure.  The gpc_upd_parameter callback is
 * optional (i.e. it can be NULL).
 *
 * This structure is used for backlight and brightness control.  The
 * expected parameter range is:
 *
 *	[0, 1]		for backlight
 *	[0, 255]	for brightness
 */</doc>
<mbr r='genfb_parameter_callback::gpc_cookie' o='0' t='void *'/>
<mbr r='genfb_parameter_callback::gpc_get_parameter' o='64' t='int (*)(void *, int *)'/>
<mbr r='genfb_parameter_callback::gpc_set_parameter' o='128' t='int (*)(void *, int)'/>
<mbr r='genfb_parameter_callback::gpc_upd_parameter' o='192' t='int (*)(void *, int)'/>
