brcmstb_pull_config_set
ret = brcmstb_pull_config_set(pc, pin, BRCMSTB_PULL_NONE);
ret = brcmstb_pull_config_set(pc, pin, BRCMSTB_PULL_DOWN);
ret = brcmstb_pull_config_set(pc, pin, BRCMSTB_PULL_UP);