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soc: imx: move cpu code to drivers/soc/imx 

Move the soc device register code to drivers/soc/imx to align with
i.MX8.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Peng Fan 2020-05-20 13:51:29 +08:00 committed by Shawn Guo
parent f72130c6b6
commit 52102a3ba6
3 changed files with 195 additions and 182 deletions
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182
arch/arm/mach-imx/cpu.c
View File

@ -1,25 +1,13 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/err.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
#include "hardware.h"
#include "common.h"
#define OCOTP_UID_H 0x420
#define OCOTP_UID_L 0x410
#define OCOTP_ULP_UID_1 0x4b0
#define OCOTP_ULP_UID_2 0x4c0
#define OCOTP_ULP_UID_3 0x4d0
#define OCOTP_ULP_UID_4 0x4e0
unsigned int __mxc_cpu_type;
static unsigned int imx_soc_revision;
@ -82,173 +70,3 @@ void __init imx_aips_allow_unprivileged_access(
imx_set_aips(aips_base_addr);
}
}
static int __init imx_soc_device_init(void)
{
struct soc_device_attribute *soc_dev_attr;
const char *ocotp_compat = NULL;
struct soc_device *soc_dev;
struct device_node *root;
struct regmap *ocotp = NULL;
const char *soc_id;
u64 soc_uid = 0;
u32 val;
int ret;
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return -ENOMEM;
soc_dev_attr->family = "Freescale i.MX";
root = of_find_node_by_path("/");
ret = of_property_read_string(root, "model", &soc_dev_attr->machine);
of_node_put(root);
if (ret)
goto free_soc;
switch (__mxc_cpu_type) {
case MXC_CPU_MX1:
soc_id = "i.MX1";
break;
case MXC_CPU_MX21:
soc_id = "i.MX21";
break;
case MXC_CPU_MX25:
soc_id = "i.MX25";
break;
case MXC_CPU_MX27:
soc_id = "i.MX27";
break;
case MXC_CPU_MX31:
soc_id = "i.MX31";
break;
case MXC_CPU_MX35:
soc_id = "i.MX35";
break;
case MXC_CPU_MX51:
soc_id = "i.MX51";
break;
case MXC_CPU_MX53:
soc_id = "i.MX53";
break;
case MXC_CPU_IMX6SL:
ocotp_compat = "fsl,imx6sl-ocotp";
soc_id = "i.MX6SL";
break;
case MXC_CPU_IMX6DL:
ocotp_compat = "fsl,imx6q-ocotp";
soc_id = "i.MX6DL";
break;
case MXC_CPU_IMX6SX:
ocotp_compat = "fsl,imx6sx-ocotp";
soc_id = "i.MX6SX";
break;
case MXC_CPU_IMX6Q:
ocotp_compat = "fsl,imx6q-ocotp";
soc_id = "i.MX6Q";
break;
case MXC_CPU_IMX6UL:
ocotp_compat = "fsl,imx6ul-ocotp";
soc_id = "i.MX6UL";
break;
case MXC_CPU_IMX6ULL:
ocotp_compat = "fsl,imx6ull-ocotp";
soc_id = "i.MX6ULL";
break;
case MXC_CPU_IMX6ULZ:
ocotp_compat = "fsl,imx6ull-ocotp";
soc_id = "i.MX6ULZ";
break;
case MXC_CPU_IMX6SLL:
ocotp_compat = "fsl,imx6sll-ocotp";
soc_id = "i.MX6SLL";
break;
case MXC_CPU_IMX7D:
ocotp_compat = "fsl,imx7d-ocotp";
soc_id = "i.MX7D";
break;
case MXC_CPU_IMX7ULP:
ocotp_compat = "fsl,imx7ulp-ocotp";
soc_id = "i.MX7ULP";
break;
case MXC_CPU_VF500:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF500";
break;
case MXC_CPU_VF510:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF510";
break;
case MXC_CPU_VF600:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF600";
break;
case MXC_CPU_VF610:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF610";
break;
default:
soc_id = "Unknown";
}
soc_dev_attr->soc_id = soc_id;
if (ocotp_compat) {
ocotp = syscon_regmap_lookup_by_compatible(ocotp_compat);
if (IS_ERR(ocotp))
pr_err("%s: failed to find %s regmap!\n", __func__, ocotp_compat);
}
if (!IS_ERR_OR_NULL(ocotp)) {
if (__mxc_cpu_type == MXC_CPU_IMX7ULP) {
regmap_read(ocotp, OCOTP_ULP_UID_4, &val);
soc_uid = val & 0xffff;
regmap_read(ocotp, OCOTP_ULP_UID_3, &val);
soc_uid <<= 16;
soc_uid |= val & 0xffff;
regmap_read(ocotp, OCOTP_ULP_UID_2, &val);
soc_uid <<= 16;
soc_uid |= val & 0xffff;
regmap_read(ocotp, OCOTP_ULP_UID_1, &val);
soc_uid <<= 16;
soc_uid |= val & 0xffff;
} else {
regmap_read(ocotp, OCOTP_UID_H, &val);
soc_uid = val;
regmap_read(ocotp, OCOTP_UID_L, &val);
soc_uid <<= 32;
soc_uid |= val;
}
}
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d.%d",
(imx_soc_revision >> 4) & 0xf,
imx_soc_revision & 0xf);
if (!soc_dev_attr->revision) {
ret = -ENOMEM;
goto free_soc;
}
soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", soc_uid);
if (!soc_dev_attr->serial_number) {
ret = -ENOMEM;
goto free_rev;
}
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
ret = PTR_ERR(soc_dev);
goto free_serial_number;
}
return 0;
free_serial_number:
kfree(soc_dev_attr->serial_number);
free_rev:
kfree(soc_dev_attr->revision);
free_soc:
kfree(soc_dev_attr);
return ret;
}
device_initcall(imx_soc_device_init);

3
drivers/soc/imx/Makefile
View File

@ -1,4 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
ifeq ($(CONFIG_ARM),y)
obj-$(CONFIG_ARCH_MXC) += soc-imx.o
endif
obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o
obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o

192
drivers/soc/imx/soc-imx.c Normal file
View File

@ -0,0 +1,192 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2020 NXP
*/
#include <linux/mfd/syscon.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/sys_soc.h>
#include <soc/imx/cpu.h>
#include <soc/imx/revision.h>
#define OCOTP_UID_H 0x420
#define OCOTP_UID_L 0x410
#define OCOTP_ULP_UID_1 0x4b0
#define OCOTP_ULP_UID_2 0x4c0
#define OCOTP_ULP_UID_3 0x4d0
#define OCOTP_ULP_UID_4 0x4e0
static int __init imx_soc_device_init(void)
{
struct soc_device_attribute *soc_dev_attr;
const char *ocotp_compat = NULL;
struct soc_device *soc_dev;
struct device_node *root;
struct regmap *ocotp = NULL;
const char *soc_id;
u64 soc_uid = 0;
u32 val;
int ret;
soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
return -ENOMEM;
soc_dev_attr->family = "Freescale i.MX";
root = of_find_node_by_path("/");
ret = of_property_read_string(root, "model", &soc_dev_attr->machine);
of_node_put(root);
if (ret)
goto free_soc;
switch (__mxc_cpu_type) {
case MXC_CPU_MX1:
soc_id = "i.MX1";
break;
case MXC_CPU_MX21:
soc_id = "i.MX21";
break;
case MXC_CPU_MX25:
soc_id = "i.MX25";
break;
case MXC_CPU_MX27:
soc_id = "i.MX27";
break;
case MXC_CPU_MX31:
soc_id = "i.MX31";
break;
case MXC_CPU_MX35:
soc_id = "i.MX35";
break;
case MXC_CPU_MX51:
soc_id = "i.MX51";
break;
case MXC_CPU_MX53:
soc_id = "i.MX53";
break;
case MXC_CPU_IMX6SL:
ocotp_compat = "fsl,imx6sl-ocotp";
soc_id = "i.MX6SL";
break;
case MXC_CPU_IMX6DL:
ocotp_compat = "fsl,imx6q-ocotp";
soc_id = "i.MX6DL";
break;
case MXC_CPU_IMX6SX:
ocotp_compat = "fsl,imx6sx-ocotp";
soc_id = "i.MX6SX";
break;
case MXC_CPU_IMX6Q:
ocotp_compat = "fsl,imx6q-ocotp";
soc_id = "i.MX6Q";
break;
case MXC_CPU_IMX6UL:
ocotp_compat = "fsl,imx6ul-ocotp";
soc_id = "i.MX6UL";
break;
case MXC_CPU_IMX6ULL:
ocotp_compat = "fsl,imx6ull-ocotp";
soc_id = "i.MX6ULL";
break;
case MXC_CPU_IMX6ULZ:
ocotp_compat = "fsl,imx6ull-ocotp";
soc_id = "i.MX6ULZ";
break;
case MXC_CPU_IMX6SLL:
ocotp_compat = "fsl,imx6sll-ocotp";
soc_id = "i.MX6SLL";
break;
case MXC_CPU_IMX7D:
ocotp_compat = "fsl,imx7d-ocotp";
soc_id = "i.MX7D";
break;
case MXC_CPU_IMX7ULP:
ocotp_compat = "fsl,imx7ulp-ocotp";
soc_id = "i.MX7ULP";
break;
case MXC_CPU_VF500:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF500";
break;
case MXC_CPU_VF510:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF510";
break;
case MXC_CPU_VF600:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF600";
break;
case MXC_CPU_VF610:
ocotp_compat = "fsl,vf610-ocotp";
soc_id = "VF610";
break;
default:
soc_id = "Unknown";
}
soc_dev_attr->soc_id = soc_id;
if (ocotp_compat) {
ocotp = syscon_regmap_lookup_by_compatible(ocotp_compat);
if (IS_ERR(ocotp))
pr_err("%s: failed to find %s regmap!\n", __func__, ocotp_compat);
}
if (!IS_ERR_OR_NULL(ocotp)) {
if (__mxc_cpu_type == MXC_CPU_IMX7ULP) {
regmap_read(ocotp, OCOTP_ULP_UID_4, &val);
soc_uid = val & 0xffff;
regmap_read(ocotp, OCOTP_ULP_UID_3, &val);
soc_uid <<= 16;
soc_uid |= val & 0xffff;
regmap_read(ocotp, OCOTP_ULP_UID_2, &val);
soc_uid <<= 16;
soc_uid |= val & 0xffff;
regmap_read(ocotp, OCOTP_ULP_UID_1, &val);
soc_uid <<= 16;
soc_uid |= val & 0xffff;
} else {
regmap_read(ocotp, OCOTP_UID_H, &val);
soc_uid = val;
regmap_read(ocotp, OCOTP_UID_L, &val);
soc_uid <<= 32;
soc_uid |= val;
}
}
soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d.%d",
(imx_get_soc_revision() >> 4) & 0xf,
imx_get_soc_revision() & 0xf);
if (!soc_dev_attr->revision) {
ret = -ENOMEM;
goto free_soc;
}
soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", soc_uid);
if (!soc_dev_attr->serial_number) {
ret = -ENOMEM;
goto free_rev;
}
soc_dev = soc_device_register(soc_dev_attr);
if (IS_ERR(soc_dev)) {
ret = PTR_ERR(soc_dev);
goto free_serial_number;
}
return 0;
free_serial_number:
kfree(soc_dev_attr->serial_number);
free_rev:
kfree(soc_dev_attr->revision);
free_soc:
kfree(soc_dev_attr);
return ret;
}
device_initcall(imx_soc_device_init);