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/*
* Copyright © 2014 NVIDIA Corporation
* Copyright © 2015 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#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>
#include <soc/brcmstb/common.h>
static u32 family_id;
static u32 product_id;
static const struct of_device_id brcmstb_machine_match[] = {
{ .compatible = "brcm,brcmstb", },
{ }
};
bool soc_is_brcmstb(void)
{
const struct of_device_id *match;
struct device_node *root;
root = of_find_node_by_path("/");
if (!root)
return false;
match = of_match_node(brcmstb_machine_match, root);
of_node_put(root);
return match != NULL;
}
static const struct of_device_id sun_top_ctrl_match[] = {
{ .compatible = "brcm,brcmstb-sun-top-ctrl", },
{ }
};
static int __init brcmstb_soc_device_init(void)
{
struct soc_device_attribute *soc_dev_attr;
struct soc_device *soc_dev;
struct device_node *sun_top_ctrl;
void __iomem *sun_top_ctrl_base;
int ret = 0;
sun_top_ctrl = of_find_matching_node(NULL, sun_top_ctrl_match);
if (!sun_top_ctrl)
return -ENODEV;
sun_top_ctrl_base = of_iomap(sun_top_ctrl, 0);
if (!sun_top_ctrl_base)
return -ENODEV;
family_id = readl(sun_top_ctrl_base);
product_id = readl(sun_top_ctrl_base + 0x4);
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr) {
ret = -ENOMEM;
goto out;
}
soc_dev_attr->family = kasprintf(GFP_KERNEL, "%x",
family_id >> 28 ?
family_id >> 16 : family_id >> 8);
soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%x",
product_id >> 28 ?
product_id >> 16 : product_id >> 8);
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%c%d",
((product_id & 0xf0) >> 4) + 'A',
product_id & 0xf);
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
kfree(soc_dev_attr->family);
kfree(soc_dev_attr->soc_id);
kfree(soc_dev_attr->revision);
kfree(soc_dev_attr);
ret = -ENODEV;
goto out;
}
return 0;
out:
iounmap(sun_top_ctrl_base);
return ret;
}
arch_initcall(brcmstb_soc_device_init);
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