u-boot/drivers/core/simple-pm-bus.c
Simon Glass d6332d59d2 simple-pm-bus: Use -ENOSYS for checking missing system call
We don't need to check -ENOTSUPP since this is not used for this purpose
in U-Boot. Update the code accordingly.

Signed-off-by: Simon Glass <sjg@chromium.org>

Reviewed-by: Sean Anderson <seanga2@gmail.com>
2021-04-06 16:33:19 +12:00

57 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2020 Sean Anderson <seanga2@gmail.com>
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
/*
* Power domains are taken care of by driver_probe, so we just have to enable
* clocks
*/
static int simple_pm_bus_probe(struct udevice *dev)
{
int ret;
struct clk_bulk *bulk = dev_get_priv(dev);
ret = clk_get_bulk(dev, bulk);
if (ret)
return ret;
ret = clk_enable_bulk(bulk);
if (ret && ret != -ENOSYS) {
clk_release_bulk(bulk);
return ret;
}
return 0;
}
static int simple_pm_bus_remove(struct udevice *dev)
{
int ret;
struct clk_bulk *bulk = dev_get_priv(dev);
ret = clk_release_bulk(bulk);
if (ret && ret != -ENOSYS)
return ret;
else
return 0;
}
static const struct udevice_id simple_pm_bus_ids[] = {
{ .compatible = "simple-pm-bus" },
{ }
};
U_BOOT_DRIVER(simple_pm_bus_drv) = {
.name = "simple_pm_bus",
.id = UCLASS_SIMPLE_BUS,
.of_match = simple_pm_bus_ids,
.probe = simple_pm_bus_probe,
.remove = simple_pm_bus_remove,
.priv_auto = sizeof(struct clk_bulk),
.flags = DM_FLAG_PRE_RELOC,
};