83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
89 lines
1.8 KiB
C
89 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
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*
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* Derived from linux/arch/mips/bcm63xx/reset.c:
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* Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <reset-uclass.h>
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#include <asm/io.h>
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#define MAX_RESETS 32
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struct bcm6345_reset_priv {
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void __iomem *regs;
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};
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static int bcm6345_reset_assert(struct reset_ctl *rst)
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{
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struct bcm6345_reset_priv *priv = dev_get_priv(rst->dev);
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clrbits_be32(priv->regs, BIT(rst->id));
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mdelay(20);
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return 0;
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}
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static int bcm6345_reset_deassert(struct reset_ctl *rst)
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{
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struct bcm6345_reset_priv *priv = dev_get_priv(rst->dev);
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setbits_be32(priv->regs, BIT(rst->id));
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mdelay(20);
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return 0;
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}
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static int bcm6345_reset_free(struct reset_ctl *rst)
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{
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return 0;
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}
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static int bcm6345_reset_request(struct reset_ctl *rst)
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{
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if (rst->id >= MAX_RESETS)
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return -EINVAL;
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return bcm6345_reset_assert(rst);
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}
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struct reset_ops bcm6345_reset_reset_ops = {
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.free = bcm6345_reset_free,
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.request = bcm6345_reset_request,
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.rst_assert = bcm6345_reset_assert,
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.rst_deassert = bcm6345_reset_deassert,
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};
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static const struct udevice_id bcm6345_reset_ids[] = {
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{ .compatible = "brcm,bcm6345-reset" },
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{ /* sentinel */ }
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};
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static int bcm6345_reset_probe(struct udevice *dev)
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{
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struct bcm6345_reset_priv *priv = dev_get_priv(dev);
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fdt_addr_t addr;
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fdt_size_t size;
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addr = devfdt_get_addr_size_index(dev, 0, &size);
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if (addr == FDT_ADDR_T_NONE)
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return -EINVAL;
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priv->regs = ioremap(addr, size);
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return 0;
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}
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U_BOOT_DRIVER(bcm6345_reset) = {
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.name = "bcm6345-reset",
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.id = UCLASS_RESET,
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.of_match = bcm6345_reset_ids,
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.ops = &bcm6345_reset_reset_ops,
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.probe = bcm6345_reset_probe,
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.priv_auto_alloc_size = sizeof(struct bcm6345_reset_priv),
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};
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