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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright © 2014 NVIDIA Corporation
* Copyright © 2015 Broadcom Corporation
*/
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/soc/brcmstb/brcmstb.h>
#include <linux/sys_soc.h>
struct brcmstb_soc_info {
u32 family_id;
u32 product_id;
};
static struct brcmstb_soc_info *soc_info;
u32 brcmstb_get_family_id(void)
{
return soc_info ? soc_info->family_id : 0;
}
EXPORT_SYMBOL(brcmstb_get_family_id);
u32 brcmstb_get_product_id(void)
{
return soc_info ? soc_info->product_id : 0;
}
EXPORT_SYMBOL(brcmstb_get_product_id);
static const struct of_device_id sun_top_ctrl_match[] = {
{ .compatible = "brcm,bcm7125-sun-top-ctrl", },
{ .compatible = "brcm,bcm7346-sun-top-ctrl", },
{ .compatible = "brcm,bcm7358-sun-top-ctrl", },
{ .compatible = "brcm,bcm7360-sun-top-ctrl", },
{ .compatible = "brcm,bcm7362-sun-top-ctrl", },
{ .compatible = "brcm,bcm7420-sun-top-ctrl", },
{ .compatible = "brcm,bcm7425-sun-top-ctrl", },
{ .compatible = "brcm,bcm7429-sun-top-ctrl", },
{ .compatible = "brcm,bcm7435-sun-top-ctrl", },
{ .compatible = "brcm,brcmstb-sun-top-ctrl", },
{ }
};
static int __init brcmstb_soc_device_init(void)
{
struct soc_device_attribute *soc_dev_attr;
struct device_node *sun_top_ctrl;
void __iomem *sun_top_ctrl_base;
struct soc_device *soc_dev;
int ret = 0;
/* We could be on a multi-platform kernel, don't make this fatal but
* bail out early
*/
sun_top_ctrl = of_find_matching_node(NULL, sun_top_ctrl_match);
if (!sun_top_ctrl)
return 0;
sun_top_ctrl_base = of_iomap(sun_top_ctrl, 0);
if (!sun_top_ctrl_base) {
ret = -ENODEV;
goto out_put_node;
}
soc_info = kzalloc(sizeof(*soc_info), GFP_KERNEL);
if (!soc_info) {
ret = -ENOMEM;
goto out_unmap;
}
soc_info->family_id = readl(sun_top_ctrl_base);
soc_info->product_id = readl(sun_top_ctrl_base + 0x4);
soc_dev_attr = kzalloc_obj(*soc_dev_attr);
if (!soc_dev_attr) {
ret = -ENOMEM;
goto out_free_info;
}
soc_dev_attr->family = kasprintf(GFP_KERNEL, "%x",
soc_info->family_id >> 28 ?
soc_info->family_id >> 16 : soc_info->family_id >> 8);
soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%x",
soc_info->product_id >> 28 ?
soc_info->product_id >> 16 : soc_info->product_id >> 8);
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%c%d",
((soc_info->product_id & 0xf0) >> 4) + 'A',
soc_info->product_id & 0xf);
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
ret = PTR_ERR(soc_dev);
goto out_free_attr;
}
iounmap(sun_top_ctrl_base);
of_node_put(sun_top_ctrl);
return 0;
out_free_attr:
kfree(soc_dev_attr->revision);
kfree(soc_dev_attr->soc_id);
kfree(soc_dev_attr->family);
kfree(soc_dev_attr);
out_free_info:
kfree(soc_info);
soc_info = NULL;
out_unmap:
iounmap(sun_top_ctrl_base);
out_put_node:
of_node_put(sun_top_ctrl);
return ret;
}
early_initcall(brcmstb_soc_device_init);
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