Facet API

/*
* Facets Widgets
**/
function HOOK_facetapi_facet_info() {

    $facets = array();

    $facets['ss_company_facet'] = array(
        'field' => 'ss_company',
        'label' => t('Company'),
        'description' => t('Filter by Company'),
    );
    
    return $facets;
}