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f91bb6d1df
The stm32-reset-core.h is located in drivers/reset/stm32/ , it has to
be included using "stm32-reset-core.h" and not <stm32-reset-core.h> ,
otherwise the build fails. Fix it.
Fixes: 0994a627c2 ("reset: stm32mp25: add stm32mp25 reset driver")
Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
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/*
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* Copyright (C) 2024, STMicroelectronics - All Rights Reserved
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* Author(s): Gabriel Fernandez, <gabriel.fernandez@foss.st.com> for STMicroelectronics.
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*/
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#include <dm.h>
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#include <reset-uclass.h>
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#include "stm32-reset-core.h"
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#include <stm32_rcc.h>
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#include <dm/device_compat.h>
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#include <linux/iopoll.h>
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static int stm32_reset_update(struct reset_ctl *reset_ctl, bool status)
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{
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struct stm32_reset_priv *priv = dev_get_priv(reset_ctl->dev);
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const struct stm32_reset_data *data = priv->data;
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const struct stm32_reset_cfg *ptr_line;
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fdt_addr_t addr;
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assert(priv->data->get_reset_line);
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ptr_line = priv->data->get_reset_line(reset_ctl);
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if (!ptr_line)
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return -EPERM;
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addr = priv->base + ptr_line->offset;
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dev_dbg(reset_ctl->dev, "reset id=%ld offset=0x%x bit=%d status=%d\n",
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reset_ctl->id, ptr_line->offset, ptr_line->bit_idx, status);
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status = ptr_line->inverted ^ status;
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if (ptr_line->set_clr) {
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if (!status)
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addr += data->clear_offset;
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writel(BIT(ptr_line->bit_idx), addr);
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} else {
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if (status)
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setbits_le32(addr, BIT(ptr_line->bit_idx));
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else
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clrbits_le32(addr, BIT(ptr_line->bit_idx));
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}
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/* Check deassert */
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if (!status) {
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u32 reg;
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return readl_poll_timeout(addr, reg,
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!(reg & BIT(ptr_line->bit_idx)),
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data->reset_us);
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}
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return 0;
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}
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static int stm32_reset_assert(struct reset_ctl *reset_ctl)
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{
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return stm32_reset_update(reset_ctl, true);
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}
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static int stm32_reset_deassert(struct reset_ctl *reset_ctl)
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{
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return stm32_reset_update(reset_ctl, false);
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}
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const struct reset_ops stm32_reset_ops = {
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.rst_assert = stm32_reset_assert,
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.rst_deassert = stm32_reset_deassert,
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};
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int stm32_reset_core_probe(struct udevice *dev,
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const struct stm32_reset_data *data)
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{
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struct stm32_reset_priv *priv = dev_get_priv(dev);
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priv->base = dev_read_addr(dev);
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if (priv->base == FDT_ADDR_T_NONE) {
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/* for MFD, get address of parent */
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priv->base = dev_read_addr(dev->parent);
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if (priv->base == FDT_ADDR_T_NONE)
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return -EINVAL;
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}
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priv->data = data;
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assert(priv->data);
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return 0;
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}
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