452 static int tegra_io_rail_prepare(int id, unsigned long *request,  in tegra_io_rail_prepare()  argument
469 		*request = IO_DPD_REQ;  in tegra_io_rail_prepare()
472 		*request = IO_DPD2_REQ;  in tegra_io_rail_prepare()
517 	unsigned long request, status, value;  in tegra_io_rail_power_on()  local
521 	err = tegra_io_rail_prepare(id, &request, &status, &bit);  in tegra_io_rail_power_on()
527 	value = tegra_pmc_readl(request);  in tegra_io_rail_power_on()
531 	tegra_pmc_writel(value, request);  in tegra_io_rail_power_on()
545 	unsigned long request, status, value;  in tegra_io_rail_power_off()  local
549 	err = tegra_io_rail_prepare(id, &request, &status, &bit);  in tegra_io_rail_power_off()
555 	value = tegra_pmc_readl(request);  in tegra_io_rail_power_off()
559 	tegra_pmc_writel(value, request);  in tegra_io_rail_power_off()