[J-u-boot.git] / drivers / clk / clk_bcm6345.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2017 Álvaro Fernández Rojas <[email protected]>
 *
 * Derived from linux/arch/mips/bcm63xx/clk.c:
 *	Copyright (C) 2008 Maxime Bizon <[email protected]>
 */

#include <clk-uclass.h>
#include <dm.h>
#include <errno.h>
#include <asm/io.h>
#include <linux/bitops.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);

	priv->regs = dev_remap_addr(dev);
	if (!priv->regs)
		return -EINVAL;

	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	= sizeof(struct bcm6345_clk_priv),
};
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
5357eb95 ÁFR	2	/*
	3	* Copyright (C) 2017 Álvaro Fernández Rojas <[email protected]>
	4	*
	5	* Derived from linux/arch/mips/bcm63xx/clk.c:
	6	* Copyright (C) 2008 Maxime Bizon <[email protected]>
5357eb95 ÁFR	7	*/
5357eb95 ÁFR	8
5357eb95 ÁFR	9	#include <clk-uclass.h>
	10	#include <dm.h>
	11	#include <errno.h>
	12	#include <asm/io.h>
cd93d625	13	#include <linux/bitops.h>
5357eb95 ÁFR	14
	15	#define MAX_CLKS 32
	16
	17	struct bcm6345_clk_priv {
	18	void __iomem *regs;
	19	};
	20
	21	static int bcm6345_clk_enable(struct clk *clk)
	22	{
	23	struct bcm6345_clk_priv *priv = dev_get_priv(clk->dev);
	24
	25	if (clk->id >= MAX_CLKS)
	26	return -EINVAL;
	27
	28	setbits_be32(priv->regs, BIT(clk->id));
	29
	30	return 0;
	31	}
	32
	33	static int bcm6345_clk_disable(struct clk *clk)
	34	{
	35	struct bcm6345_clk_priv *priv = dev_get_priv(clk->dev);
	36
	37	if (clk->id >= MAX_CLKS)
	38	return -EINVAL;
	39
	40	clrbits_be32(priv->regs, BIT(clk->id));
	41
	42	return 0;
	43	}
	44
	45	static struct clk_ops bcm6345_clk_ops = {
	46	.disable = bcm6345_clk_disable,
	47	.enable = bcm6345_clk_enable,
	48	};
	49
	50	static const struct udevice_id bcm6345_clk_ids[] = {
	51	{ .compatible = "brcm,bcm6345-clk" },
	52	{ /* sentinel */ }
	53	};
	54
	55	static int bcm63xx_clk_probe(struct udevice *dev)
	56	{
	57	struct bcm6345_clk_priv *priv = dev_get_priv(dev);
5357eb95	58
2902997b ÁFR	59	priv->regs = dev_remap_addr(dev);
2902997b ÁFR	60	if (!priv->regs)
5357eb95 ÁFR	61	return -EINVAL;
5357eb95 ÁFR	62
5357eb95 ÁFR	63	return 0;
	64	}
	65
	66	U_BOOT_DRIVER(clk_bcm6345) = {
	67	.name = "clk_bcm6345",
	68	.id = UCLASS_CLK,
	69	.of_match = bcm6345_clk_ids,
	70	.ops = &bcm6345_clk_ops,
	71	.probe = bcm63xx_clk_probe,
41575d8e	72	.priv_auto = sizeof(struct bcm6345_clk_priv),
5357eb95	73	};