u-boot/arch/arm/mach-aspeed/ast2500/clk_ast2500.c
Simon Glass 61b29b8268 dm: core: Require users of devres to include the header
At present devres.h is included in all files that include dm.h but few
make use of it. Also this pulls in linux/compat which adds several more
headers. Drop the automatic inclusion and require files to include devres
themselves. This provides a good indication of which files use devres.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
2020-02-05 19:33:46 -07:00

45 lines
810 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Google, Inc
*/
#include <common.h>
#include <dm.h>
#include <asm/io.h>
#include <asm/arch/scu_ast2500.h>
#include <linux/err.h>
int ast_get_clk(struct udevice **devp)
{
return uclass_get_device_by_driver(UCLASS_CLK,
DM_GET_DRIVER(aspeed_ast2500_scu), devp);
}
void *ast_get_scu(void)
{
struct ast2500_clk_priv *priv;
struct udevice *dev;
int ret;
ret = ast_get_clk(&dev);
if (ret)
return ERR_PTR(ret);
priv = dev_get_priv(dev);
return priv->scu;
}
void ast_scu_unlock(struct ast2500_scu *scu)
{
writel(SCU_UNLOCK_VALUE, &scu->protection_key);
while (!readl(&scu->protection_key))
;
}
void ast_scu_lock(struct ast2500_scu *scu)
{
writel(~SCU_UNLOCK_VALUE, &scu->protection_key);
while (readl(&scu->protection_key))
;
}