mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-05 20:54:31 +00:00
336d4615f8
At present dm/device.h includes the linux-compatible features. This requires including linux/compat.h which in turn includes a lot of headers. One of these is malloc.h which we thus end up including in every file in U-Boot. Apart from the inefficiency of this, it is problematic for sandbox which needs to use the system malloc() in some files. Move the compatibility features into a separate header file. Signed-off-by: Simon Glass <sjg@chromium.org>
146 lines
2.8 KiB
C
146 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
|
|
/*
|
|
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <hwspinlock.h>
|
|
#include <dm/device-internal.h>
|
|
#include <dm/device_compat.h>
|
|
#include <linux/compat.h>
|
|
|
|
static inline const struct hwspinlock_ops *
|
|
hwspinlock_dev_ops(struct udevice *dev)
|
|
{
|
|
return (const struct hwspinlock_ops *)dev->driver->ops;
|
|
}
|
|
|
|
static int hwspinlock_of_xlate_default(struct hwspinlock *hws,
|
|
struct ofnode_phandle_args *args)
|
|
{
|
|
if (args->args_count > 1) {
|
|
debug("Invaild args_count: %d\n", args->args_count);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (args->args_count)
|
|
hws->id = args->args[0];
|
|
else
|
|
hws->id = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hwspinlock_get_by_index(struct udevice *dev, int index,
|
|
struct hwspinlock *hws)
|
|
{
|
|
int ret;
|
|
struct ofnode_phandle_args args;
|
|
struct udevice *dev_hws;
|
|
const struct hwspinlock_ops *ops;
|
|
|
|
assert(hws);
|
|
hws->dev = NULL;
|
|
|
|
ret = dev_read_phandle_with_args(dev, "hwlocks", "#hwlock-cells", 1,
|
|
index, &args);
|
|
if (ret) {
|
|
dev_dbg(dev, "%s: dev_read_phandle_with_args: err=%d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = uclass_get_device_by_ofnode(UCLASS_HWSPINLOCK,
|
|
args.node, &dev_hws);
|
|
if (ret) {
|
|
dev_dbg(dev,
|
|
"%s: uclass_get_device_by_of_offset failed: err=%d\n",
|
|
__func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
hws->dev = dev_hws;
|
|
|
|
ops = hwspinlock_dev_ops(dev_hws);
|
|
|
|
if (ops->of_xlate)
|
|
ret = ops->of_xlate(hws, &args);
|
|
else
|
|
ret = hwspinlock_of_xlate_default(hws, &args);
|
|
if (ret)
|
|
dev_dbg(dev, "of_xlate() failed: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int hwspinlock_lock_timeout(struct hwspinlock *hws, unsigned int timeout)
|
|
{
|
|
const struct hwspinlock_ops *ops;
|
|
ulong start;
|
|
int ret;
|
|
|
|
assert(hws);
|
|
|
|
if (!hws->dev)
|
|
return -EINVAL;
|
|
|
|
ops = hwspinlock_dev_ops(hws->dev);
|
|
if (!ops->lock)
|
|
return -ENOSYS;
|
|
|
|
start = get_timer(0);
|
|
do {
|
|
ret = ops->lock(hws->dev, hws->id);
|
|
if (!ret)
|
|
return ret;
|
|
|
|
if (ops->relax)
|
|
ops->relax(hws->dev);
|
|
} while (get_timer(start) < timeout);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
int hwspinlock_unlock(struct hwspinlock *hws)
|
|
{
|
|
const struct hwspinlock_ops *ops;
|
|
|
|
assert(hws);
|
|
|
|
if (!hws->dev)
|
|
return -EINVAL;
|
|
|
|
ops = hwspinlock_dev_ops(hws->dev);
|
|
if (!ops->unlock)
|
|
return -ENOSYS;
|
|
|
|
return ops->unlock(hws->dev, hws->id);
|
|
}
|
|
|
|
static int hwspinlock_post_bind(struct udevice *dev)
|
|
{
|
|
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
|
|
struct hwspinlock_ops *ops = device_get_ops(dev);
|
|
static int reloc_done;
|
|
|
|
if (!reloc_done) {
|
|
if (ops->lock)
|
|
ops->lock += gd->reloc_off;
|
|
if (ops->unlock)
|
|
ops->unlock += gd->reloc_off;
|
|
if (ops->relax)
|
|
ops->relax += gd->reloc_off;
|
|
|
|
reloc_done++;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
UCLASS_DRIVER(hwspinlock) = {
|
|
.id = UCLASS_HWSPINLOCK,
|
|
.name = "hwspinlock",
|
|
.post_bind = hwspinlock_post_bind,
|
|
};
|