144 lines
3.6 KiB
C
Executable file
144 lines
3.6 KiB
C
Executable file
/*
|
|
* 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;
|
|
}
|
|
|
|
u32 brcmstb_get_family_id(void)
|
|
{
|
|
return family_id;
|
|
}
|
|
EXPORT_SYMBOL(brcmstb_get_family_id);
|
|
|
|
u32 brcmstb_get_product_id(void)
|
|
{
|
|
return product_id;
|
|
}
|
|
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_early_init(void)
|
|
{
|
|
struct device_node *sun_top_ctrl;
|
|
void __iomem *sun_top_ctrl_base;
|
|
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 ret;
|
|
|
|
sun_top_ctrl_base = of_iomap(sun_top_ctrl, 0);
|
|
if (!sun_top_ctrl_base) {
|
|
ret = -ENODEV;
|
|
goto out;
|
|
}
|
|
|
|
family_id = readl(sun_top_ctrl_base);
|
|
product_id = readl(sun_top_ctrl_base + 0x4);
|
|
iounmap(sun_top_ctrl_base);
|
|
out:
|
|
of_node_put(sun_top_ctrl);
|
|
return ret;
|
|
}
|
|
early_initcall(brcmstb_soc_device_early_init);
|
|
|
|
static int __init brcmstb_soc_device_init(void)
|
|
{
|
|
struct soc_device_attribute *soc_dev_attr;
|
|
struct device_node *sun_top_ctrl;
|
|
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 ret;
|
|
|
|
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 = -ENOMEM;
|
|
}
|
|
out:
|
|
of_node_put(sun_top_ctrl);
|
|
return ret;
|
|
}
|
|
arch_initcall(brcmstb_soc_device_init);
|