a821c4af79
These support the flat device tree. We want to use the dev_read_..() prefix for functions that support both flat tree and live tree. So rename the existing functions to avoid confusion. In the end we will have: 1. dev_read_addr...() - works on devices, supports flat/live tree 2. devfdt_get_addr...() - current functions, flat tree only 3. of_get_address() etc. - new functions, live tree only All drivers will be written to use 1. That function will in turn call either 2 or 3 depending on whether the flat or live tree is in use. Note this involves changing some dead code - the imx_lpi2c.c file. Signed-off-by: Simon Glass <sjg@chromium.org>
79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
|
|
*
|
|
* Derived from linux/arch/mips/bcm63xx/clk.c:
|
|
* Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <clk-uclass.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <asm/io.h>
|
|
|
|
#define MAX_CLKS 32
|
|
|
|
struct bcm6345_clk_priv {
|
|
void __iomem *regs;
|
|
};
|
|
|
|
static int bcm6345_clk_enable(struct clk *clk)
|
|
{
|
|
struct bcm6345_clk_priv *priv = dev_get_priv(clk->dev);
|
|
|
|
if (clk->id >= MAX_CLKS)
|
|
return -EINVAL;
|
|
|
|
setbits_be32(priv->regs, BIT(clk->id));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm6345_clk_disable(struct clk *clk)
|
|
{
|
|
struct bcm6345_clk_priv *priv = dev_get_priv(clk->dev);
|
|
|
|
if (clk->id >= MAX_CLKS)
|
|
return -EINVAL;
|
|
|
|
clrbits_be32(priv->regs, BIT(clk->id));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct clk_ops bcm6345_clk_ops = {
|
|
.disable = bcm6345_clk_disable,
|
|
.enable = bcm6345_clk_enable,
|
|
};
|
|
|
|
static const struct udevice_id bcm6345_clk_ids[] = {
|
|
{ .compatible = "brcm,bcm6345-clk" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static int bcm63xx_clk_probe(struct udevice *dev)
|
|
{
|
|
struct bcm6345_clk_priv *priv = dev_get_priv(dev);
|
|
fdt_addr_t addr;
|
|
fdt_size_t size;
|
|
|
|
addr = devfdt_get_addr_size_index(dev, 0, &size);
|
|
if (addr == FDT_ADDR_T_NONE)
|
|
return -EINVAL;
|
|
|
|
priv->regs = ioremap(addr, size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_DRIVER(clk_bcm6345) = {
|
|
.name = "clk_bcm6345",
|
|
.id = UCLASS_CLK,
|
|
.of_match = bcm6345_clk_ids,
|
|
.ops = &bcm6345_clk_ops,
|
|
.probe = bcm63xx_clk_probe,
|
|
.priv_auto_alloc_size = sizeof(struct bcm6345_clk_priv),
|
|
};
|