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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) 2019 MediaTek Inc. All Rights Reserved.
- *
- * Author: Weijie Gao <weijie.gao@mediatek.com>
- */
- #include <common.h>
- #include <dm.h>
- #include <errno.h>
- #include <log.h>
- #include <malloc.h>
- #include <reset-uclass.h>
- #include <linux/bitops.h>
- #include <linux/io.h>
- struct mtmips_reset_priv {
- void __iomem *base;
- };
- static int mtmips_reset_request(struct reset_ctl *reset_ctl)
- {
- return 0;
- }
- static int mtmips_reset_free(struct reset_ctl *reset_ctl)
- {
- return 0;
- }
- static int mtmips_reset_assert(struct reset_ctl *reset_ctl)
- {
- struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev);
- setbits_32(priv->base, BIT(reset_ctl->id));
- return 0;
- }
- static int mtmips_reset_deassert(struct reset_ctl *reset_ctl)
- {
- struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev);
- clrbits_32(priv->base, BIT(reset_ctl->id));
- return 0;
- }
- static const struct reset_ops mtmips_reset_ops = {
- .request = mtmips_reset_request,
- .rfree = mtmips_reset_free,
- .rst_assert = mtmips_reset_assert,
- .rst_deassert = mtmips_reset_deassert,
- };
- static int mtmips_reset_probe(struct udevice *dev)
- {
- return 0;
- }
- static int mtmips_reset_of_to_plat(struct udevice *dev)
- {
- struct mtmips_reset_priv *priv = dev_get_priv(dev);
- priv->base = (void __iomem *)dev_remap_addr_index(dev, 0);
- if (!priv->base)
- return -EINVAL;
- return 0;
- }
- static const struct udevice_id mtmips_reset_ids[] = {
- { .compatible = "mediatek,mtmips-reset" },
- { }
- };
- U_BOOT_DRIVER(mtmips_reset) = {
- .name = "mtmips-reset",
- .id = UCLASS_RESET,
- .of_match = mtmips_reset_ids,
- .of_to_plat = mtmips_reset_of_to_plat,
- .probe = mtmips_reset_probe,
- .priv_auto = sizeof(struct mtmips_reset_priv),
- .ops = &mtmips_reset_ops,
- .flags = DM_FLAG_PRE_RELOC,
- };
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