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https://github.com/AsahiLinux/u-boot
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1e94b46f73
This old patch was marked as deferred. Bring it back to life, to continue towards the removal of common.h Move this out of the common header and include it only where needed. Signed-off-by: Simon Glass <sjg@chromium.org>
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
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* Author(s): Patrice Chotard, <patrice.chotard@foss.st.com> for STMicroelectronics.
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*/
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#include <common.h>
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#include <dm.h>
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#include <regmap.h>
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#include <syscon.h>
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#include <sysreset.h>
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#include <asm/global_data.h>
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#include <asm/io.h>
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#include <linux/bitops.h>
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#include <linux/printk.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct sti_sysreset_priv {
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phys_addr_t base;
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};
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static int sti_sysreset_request(struct udevice *dev, enum sysreset_t type)
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{
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struct sti_sysreset_priv *priv = dev_get_priv(dev);
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generic_clear_bit(0, (void __iomem *)priv->base);
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return -EINPROGRESS;
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}
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static int sti_sysreset_probe(struct udevice *dev)
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{
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struct sti_sysreset_priv *priv = dev_get_priv(dev);
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struct udevice *syscon;
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struct regmap *regmap;
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struct fdtdec_phandle_args syscfg_phandle;
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int ret;
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/* get corresponding syscon phandle */
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ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev_of_offset(dev),
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"st,syscfg", NULL, 0, 0,
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&syscfg_phandle);
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if (ret < 0) {
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pr_err("Can't get syscfg phandle: %d\n", ret);
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return ret;
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}
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ret = uclass_get_device_by_of_offset(UCLASS_SYSCON,
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syscfg_phandle.node,
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&syscon);
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if (ret) {
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pr_err("%s: uclass_get_device_by_of_offset failed: %d\n",
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__func__, ret);
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return ret;
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}
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regmap = syscon_get_regmap(syscon);
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if (!regmap) {
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pr_err("unable to get regmap for %s\n", syscon->name);
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return -ENODEV;
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}
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priv->base = regmap->ranges[0].start;
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return 0;
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}
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static struct sysreset_ops sti_sysreset = {
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.request = sti_sysreset_request,
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};
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static const struct udevice_id sti_sysreset_ids[] = {
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{ .compatible = "st,stih407-restart" },
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{ }
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};
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U_BOOT_DRIVER(sysreset_sti) = {
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.name = "sysreset_sti",
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.id = UCLASS_SYSRESET,
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.ops = &sti_sysreset,
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.probe = sti_sysreset_probe,
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.of_match = sti_sysreset_ids,
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.priv_auto = sizeof(struct sti_sysreset_priv),
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};
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