forked from Minki/linux
82a759c918
Fixes the following sparse warnings: drivers/soc/amlogic/meson-mx-socinfo.c:107:12: warning: symbol 'meson_mx_socinfo_init' was not declared. Should it be static? Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
176 lines
4.0 KiB
C
176 lines
4.0 KiB
C
/*
|
|
* Copyright (c) 2017 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/sys_soc.h>
|
|
#include <linux/bitfield.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/mfd/syscon.h>
|
|
|
|
#define MESON_SOCINFO_MAJOR_VER_MESON6 0x16
|
|
#define MESON_SOCINFO_MAJOR_VER_MESON8 0x19
|
|
#define MESON_SOCINFO_MAJOR_VER_MESON8B 0x1b
|
|
|
|
#define MESON_MX_ASSIST_HW_REV 0x14c
|
|
|
|
#define MESON_MX_ANALOG_TOP_METAL_REVISION 0x0
|
|
|
|
#define MESON_MX_BOOTROM_MISC_VER 0x4
|
|
|
|
static const char *meson_mx_socinfo_revision(unsigned int major_ver,
|
|
unsigned int misc_ver,
|
|
unsigned int metal_rev)
|
|
{
|
|
unsigned int minor_ver;
|
|
|
|
switch (major_ver) {
|
|
case MESON_SOCINFO_MAJOR_VER_MESON6:
|
|
minor_ver = 0xa;
|
|
break;
|
|
|
|
case MESON_SOCINFO_MAJOR_VER_MESON8:
|
|
if (metal_rev == 0x11111112)
|
|
major_ver = 0x1d;
|
|
|
|
if (metal_rev == 0x11111111 || metal_rev == 0x11111112)
|
|
minor_ver = 0xa;
|
|
else if (metal_rev == 0x11111113)
|
|
minor_ver = 0xb;
|
|
else if (metal_rev == 0x11111133)
|
|
minor_ver = 0xc;
|
|
else
|
|
minor_ver = 0xd;
|
|
|
|
break;
|
|
|
|
case MESON_SOCINFO_MAJOR_VER_MESON8B:
|
|
if (metal_rev == 0x11111111)
|
|
minor_ver = 0xa;
|
|
else
|
|
minor_ver = 0xb;
|
|
|
|
break;
|
|
|
|
default:
|
|
minor_ver = 0x0;
|
|
break;
|
|
}
|
|
|
|
return kasprintf(GFP_KERNEL, "Rev%X (%x - 0:%X)", minor_ver, major_ver,
|
|
misc_ver);
|
|
}
|
|
|
|
static const char *meson_mx_socinfo_soc_id(unsigned int major_ver,
|
|
unsigned int metal_rev)
|
|
{
|
|
const char *soc_id;
|
|
|
|
switch (major_ver) {
|
|
case MESON_SOCINFO_MAJOR_VER_MESON6:
|
|
soc_id = "Meson6 (AML8726-MX)";
|
|
break;
|
|
|
|
case MESON_SOCINFO_MAJOR_VER_MESON8:
|
|
if (metal_rev == 0x11111112)
|
|
soc_id = "Meson8m2 (S812)";
|
|
else
|
|
soc_id = "Meson8 (S802)";
|
|
|
|
break;
|
|
|
|
case MESON_SOCINFO_MAJOR_VER_MESON8B:
|
|
soc_id = "Meson8b (S805)";
|
|
break;
|
|
|
|
default:
|
|
soc_id = "Unknown";
|
|
break;
|
|
}
|
|
|
|
return kstrdup_const(soc_id, GFP_KERNEL);
|
|
}
|
|
|
|
static const struct of_device_id meson_mx_socinfo_analog_top_ids[] = {
|
|
{ .compatible = "amlogic,meson8-analog-top", },
|
|
{ .compatible = "amlogic,meson8b-analog-top", },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static int __init meson_mx_socinfo_init(void)
|
|
{
|
|
struct soc_device_attribute *soc_dev_attr;
|
|
struct soc_device *soc_dev;
|
|
struct device_node *np;
|
|
struct regmap *assist_regmap, *bootrom_regmap, *analog_top_regmap;
|
|
unsigned int major_ver, misc_ver, metal_rev = 0;
|
|
int ret;
|
|
|
|
assist_regmap =
|
|
syscon_regmap_lookup_by_compatible("amlogic,meson-mx-assist");
|
|
if (IS_ERR(assist_regmap))
|
|
return PTR_ERR(assist_regmap);
|
|
|
|
bootrom_regmap =
|
|
syscon_regmap_lookup_by_compatible("amlogic,meson-mx-bootrom");
|
|
if (IS_ERR(bootrom_regmap))
|
|
return PTR_ERR(bootrom_regmap);
|
|
|
|
np = of_find_matching_node(NULL, meson_mx_socinfo_analog_top_ids);
|
|
if (np) {
|
|
analog_top_regmap = syscon_node_to_regmap(np);
|
|
if (IS_ERR(analog_top_regmap))
|
|
return PTR_ERR(analog_top_regmap);
|
|
|
|
ret = regmap_read(analog_top_regmap,
|
|
MESON_MX_ANALOG_TOP_METAL_REVISION,
|
|
&metal_rev);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_read(assist_regmap, MESON_MX_ASSIST_HW_REV, &major_ver);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = regmap_read(bootrom_regmap, MESON_MX_BOOTROM_MISC_VER,
|
|
&misc_ver);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
|
|
if (!soc_dev_attr)
|
|
return -ENODEV;
|
|
|
|
soc_dev_attr->family = "Amlogic Meson";
|
|
|
|
np = of_find_node_by_path("/");
|
|
of_property_read_string(np, "model", &soc_dev_attr->machine);
|
|
of_node_put(np);
|
|
|
|
soc_dev_attr->revision = meson_mx_socinfo_revision(major_ver, misc_ver,
|
|
metal_rev);
|
|
soc_dev_attr->soc_id = meson_mx_socinfo_soc_id(major_ver, metal_rev);
|
|
|
|
soc_dev = soc_device_register(soc_dev_attr);
|
|
if (IS_ERR(soc_dev)) {
|
|
kfree_const(soc_dev_attr->revision);
|
|
kfree_const(soc_dev_attr->soc_id);
|
|
kfree(soc_dev_attr);
|
|
return PTR_ERR(soc_dev);
|
|
}
|
|
|
|
dev_info(soc_device_to_device(soc_dev), "Amlogic %s %s detected\n",
|
|
soc_dev_attr->soc_id, soc_dev_attr->revision);
|
|
|
|
return 0;
|
|
}
|
|
device_initcall(meson_mx_socinfo_init);
|