u-boot/drivers/sysreset/sysreset_syscon.c
Masahiro Yamada 9b643e312d treewide: replace with error() with pr_err()
U-Boot widely uses error() as a bit noisier variant of printf().

This macro causes name conflict with the following line in
include/linux/compiler-gcc.h:

  # define __compiletime_error(message) __attribute__((error(message)))

This prevents us from using __compiletime_error(), and makes it
difficult to fully sync BUILD_BUG macros with Linux.  (Notice
Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().)

Let's convert error() into now treewide-available pr_err().

Done with the help of Coccinelle, excluing tools/ directory.

The semantic patch I used is as follows:

// <smpl>
@@@@
-error
+pr_err
 (...)
// </smpl>

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Re-run Coccinelle]
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-10-04 11:59:44 -04:00

78 lines
1.7 KiB
C

/*
* Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
*
* Derived from linux/drivers/power/reset/syscon-reboot.c:
* Copyright (C) 2013, Applied Micro Circuits Corporation
* Author: Feng Kan <fkan@apm.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <regmap.h>
#include <sysreset.h>
#include <syscon.h>
DECLARE_GLOBAL_DATA_PTR;
struct syscon_reboot_priv {
struct regmap *regmap;
unsigned int offset;
unsigned int mask;
};
static int syscon_reboot_request(struct udevice *dev, enum sysreset_t type)
{
struct syscon_reboot_priv *priv = dev_get_priv(dev);
regmap_write(priv->regmap, priv->offset, priv->mask);
return -EINPROGRESS;
}
static struct sysreset_ops syscon_reboot_ops = {
.request = syscon_reboot_request,
};
int syscon_reboot_probe(struct udevice *dev)
{
struct udevice *syscon;
struct syscon_reboot_priv *priv = dev_get_priv(dev);
int err;
err = uclass_get_device_by_phandle(UCLASS_SYSCON, dev,
"regmap", &syscon);
if (err) {
pr_err("unable to find syscon device\n");
return err;
}
priv->regmap = syscon_get_regmap(syscon);
if (!priv->regmap) {
pr_err("unable to find regmap\n");
return -ENODEV;
}
priv->offset = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
"offset", 0);
priv->mask = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
"mask", 0);
return 0;
}
static const struct udevice_id syscon_reboot_ids[] = {
{ .compatible = "syscon-reboot" },
{ /* sentinel */ }
};
U_BOOT_DRIVER(syscon_reboot) = {
.name = "syscon_reboot",
.id = UCLASS_SYSRESET,
.of_match = syscon_reboot_ids,
.probe = syscon_reboot_probe,
.priv_auto_alloc_size = sizeof(struct syscon_reboot_priv),
.ops = &syscon_reboot_ops,
};