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linux/drivers/soc/qcom/socinfo.c
Stephen Boyd cc41a5273d soc: qcom: socinfo: Use seq_putc() if possible 
This is a single character that we're printing out. Use seq_putc() for
that to simplify the code.

Cc: Vaishali Thakkar <vaishali.thakkar@linaro.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20200309185123.65265-1-swboyd@chromium.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-03-09 12:01:34 -07:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2009-2017, The Linux Foundation. All rights reserved.
* Copyright (c) 2017-2019, Linaro Ltd.
*/
#include <linux/debugfs.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/random.h>
#include <linux/slab.h>
#include <linux/soc/qcom/smem.h>
#include <linux/string.h>
#include <linux/sys_soc.h>
#include <linux/types.h>
/*
* SoC version type with major number in the upper 16 bits and minor
* number in the lower 16 bits.
*/
#define SOCINFO_MAJOR(ver) (((ver) >> 16) & 0xffff)
#define SOCINFO_MINOR(ver) ((ver) & 0xffff)
#define SOCINFO_VERSION(maj, min) ((((maj) & 0xffff) << 16)|((min) & 0xffff))
#define SMEM_SOCINFO_BUILD_ID_LENGTH 32
/*
* SMEM item id, used to acquire handles to respective
* SMEM region.
*/
#define SMEM_HW_SW_BUILD_ID 137
#ifdef CONFIG_DEBUG_FS
#define SMEM_IMAGE_VERSION_BLOCKS_COUNT 32
#define SMEM_IMAGE_VERSION_SIZE 4096
#define SMEM_IMAGE_VERSION_NAME_SIZE 75
#define SMEM_IMAGE_VERSION_VARIANT_SIZE 20
#define SMEM_IMAGE_VERSION_OEM_SIZE 32
/*
* SMEM Image table indices
*/
#define SMEM_IMAGE_TABLE_BOOT_INDEX 0
#define SMEM_IMAGE_TABLE_TZ_INDEX 1
#define SMEM_IMAGE_TABLE_RPM_INDEX 3
#define SMEM_IMAGE_TABLE_APPS_INDEX 10
#define SMEM_IMAGE_TABLE_MPSS_INDEX 11
#define SMEM_IMAGE_TABLE_ADSP_INDEX 12
#define SMEM_IMAGE_TABLE_CNSS_INDEX 13
#define SMEM_IMAGE_TABLE_VIDEO_INDEX 14
#define SMEM_IMAGE_VERSION_TABLE 469
/*
* SMEM Image table names
*/
static const char *const socinfo_image_names[] = {
[SMEM_IMAGE_TABLE_ADSP_INDEX] = "adsp",
[SMEM_IMAGE_TABLE_APPS_INDEX] = "apps",
[SMEM_IMAGE_TABLE_BOOT_INDEX] = "boot",
[SMEM_IMAGE_TABLE_CNSS_INDEX] = "cnss",
[SMEM_IMAGE_TABLE_MPSS_INDEX] = "mpss",
[SMEM_IMAGE_TABLE_RPM_INDEX] = "rpm",
[SMEM_IMAGE_TABLE_TZ_INDEX] = "tz",
[SMEM_IMAGE_TABLE_VIDEO_INDEX] = "video",
};
static const char *const pmic_models[] = {
[0] = "Unknown PMIC model",
[9] = "PM8994",
[11] = "PM8916",
[13] = "PM8058",
[14] = "PM8028",
[15] = "PM8901",
[16] = "PM8027",
[17] = "ISL9519",
[18] = "PM8921",
[19] = "PM8018",
[20] = "PM8015",
[21] = "PM8014",
[22] = "PM8821",
[23] = "PM8038",
[24] = "PM8922",
[25] = "PM8917",
};
#endif /* CONFIG_DEBUG_FS */
/* Socinfo SMEM item structure */
struct socinfo {
__le32 fmt;
__le32 id;
__le32 ver;
char build_id[SMEM_SOCINFO_BUILD_ID_LENGTH];
/* Version 2 */
__le32 raw_id;
__le32 raw_ver;
/* Version 3 */
__le32 hw_plat;
/* Version 4 */
__le32 plat_ver;
/* Version 5 */
__le32 accessory_chip;
/* Version 6 */
__le32 hw_plat_subtype;
/* Version 7 */
__le32 pmic_model;
__le32 pmic_die_rev;
/* Version 8 */
__le32 pmic_model_1;
__le32 pmic_die_rev_1;
__le32 pmic_model_2;
__le32 pmic_die_rev_2;
/* Version 9 */
__le32 foundry_id;
/* Version 10 */
__le32 serial_num;
/* Version 11 */
__le32 num_pmics;
__le32 pmic_array_offset;
/* Version 12 */
__le32 chip_family;
__le32 raw_device_family;
__le32 raw_device_num;
};
#ifdef CONFIG_DEBUG_FS
struct socinfo_params {
u32 raw_device_family;
u32 hw_plat_subtype;
u32 accessory_chip;
u32 raw_device_num;
u32 chip_family;
u32 foundry_id;
u32 plat_ver;
u32 raw_ver;
u32 hw_plat;
u32 fmt;
};
struct smem_image_version {
char name[SMEM_IMAGE_VERSION_NAME_SIZE];
char variant[SMEM_IMAGE_VERSION_VARIANT_SIZE];
char pad;
char oem[SMEM_IMAGE_VERSION_OEM_SIZE];
};
#endif /* CONFIG_DEBUG_FS */
struct qcom_socinfo {
struct soc_device *soc_dev;
struct soc_device_attribute attr;
#ifdef CONFIG_DEBUG_FS
struct dentry *dbg_root;
struct socinfo_params info;
#endif /* CONFIG_DEBUG_FS */
};
struct soc_id {
unsigned int id;
const char *name;
};
static const struct soc_id soc_id[] = {
{ 87, "MSM8960" },
{ 109, "APQ8064" },
{ 122, "MSM8660A" },
{ 123, "MSM8260A" },
{ 124, "APQ8060A" },
{ 126, "MSM8974" },
{ 130, "MPQ8064" },
{ 138, "MSM8960AB" },
{ 139, "APQ8060AB" },
{ 140, "MSM8260AB" },
{ 141, "MSM8660AB" },
{ 178, "APQ8084" },
{ 184, "APQ8074" },
{ 185, "MSM8274" },
{ 186, "MSM8674" },
{ 194, "MSM8974PRO" },
{ 206, "MSM8916" },
{ 208, "APQ8074-AA" },
{ 209, "APQ8074-AB" },
{ 210, "APQ8074PRO" },
{ 211, "MSM8274-AA" },
{ 212, "MSM8274-AB" },
{ 213, "MSM8274PRO" },
{ 214, "MSM8674-AA" },
{ 215, "MSM8674-AB" },
{ 216, "MSM8674PRO" },
{ 217, "MSM8974-AA" },
{ 218, "MSM8974-AB" },
{ 246, "MSM8996" },
{ 247, "APQ8016" },
{ 248, "MSM8216" },
{ 249, "MSM8116" },
{ 250, "MSM8616" },
{ 291, "APQ8096" },
{ 305, "MSM8996SG" },
{ 310, "MSM8996AU" },
{ 311, "APQ8096AU" },
{ 312, "APQ8096SG" },
{ 321, "SDM845" },
{ 341, "SDA845" },
};
static const char *socinfo_machine(struct device *dev, unsigned int id)
{
int idx;
for (idx = 0; idx < ARRAY_SIZE(soc_id); idx++) {
if (soc_id[idx].id == id)
return soc_id[idx].name;
}
return NULL;
}
#ifdef CONFIG_DEBUG_FS
#define QCOM_OPEN(name, _func) \
static int qcom_open_##name(struct inode *inode, struct file *file) \
{ \
return single_open(file, _func, inode->i_private); \
} \
\
static const struct file_operations qcom_ ##name## _ops = { \
.open = qcom_open_##name, \
.read = seq_read, \
.llseek = seq_lseek, \
.release = single_release, \
}
#define DEBUGFS_ADD(info, name) \
debugfs_create_file(__stringify(name), 0400, \
qcom_socinfo->dbg_root, \
info, &qcom_ ##name## _ops)
static int qcom_show_build_id(struct seq_file *seq, void *p)
{
struct socinfo *socinfo = seq->private;
seq_printf(seq, "%s\n", socinfo->build_id);
return 0;
}
static int qcom_show_pmic_model(struct seq_file *seq, void *p)
{
struct socinfo *socinfo = seq->private;
int model = SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_model));
if (model < 0)
return -EINVAL;
seq_printf(seq, "%s\n", pmic_models[model]);
return 0;
}
static int qcom_show_pmic_die_revision(struct seq_file *seq, void *p)
{
struct socinfo *socinfo = seq->private;
seq_printf(seq, "%u.%u\n",
SOCINFO_MAJOR(le32_to_cpu(socinfo->pmic_die_rev)),
SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_die_rev)));
return 0;
}
QCOM_OPEN(build_id, qcom_show_build_id);
QCOM_OPEN(pmic_model, qcom_show_pmic_model);
QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);
#define DEFINE_IMAGE_OPS(type) \
static int show_image_##type(struct seq_file *seq, void *p) \
{ \
struct smem_image_version *image_version = seq->private; \
seq_puts(seq, image_version->type); \
seq_putc(seq, '\n'); \
return 0; \
} \
static int open_image_##type(struct inode *inode, struct file *file) \
{ \
return single_open(file, show_image_##type, inode->i_private); \
} \
\
static const struct file_operations qcom_image_##type##_ops = { \
.open = open_image_##type, \
.read = seq_read, \
.llseek = seq_lseek, \
.release = single_release, \
}
DEFINE_IMAGE_OPS(name);
DEFINE_IMAGE_OPS(variant);
DEFINE_IMAGE_OPS(oem);
static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
struct socinfo *info)
{
struct smem_image_version *versions;
struct dentry *dentry;
size_t size;
int i;
qcom_socinfo->dbg_root = debugfs_create_dir("qcom_socinfo", NULL);
qcom_socinfo->info.fmt = __le32_to_cpu(info->fmt);
switch (qcom_socinfo->info.fmt) {
case SOCINFO_VERSION(0, 12):
qcom_socinfo->info.chip_family =
__le32_to_cpu(info->chip_family);
qcom_socinfo->info.raw_device_family =
__le32_to_cpu(info->raw_device_family);
qcom_socinfo->info.raw_device_num =
__le32_to_cpu(info->raw_device_num);
debugfs_create_x32("chip_family", 0400, qcom_socinfo->dbg_root,
&qcom_socinfo->info.chip_family);
debugfs_create_x32("raw_device_family", 0400,
qcom_socinfo->dbg_root,
&qcom_socinfo->info.raw_device_family);
debugfs_create_x32("raw_device_number", 0400,
qcom_socinfo->dbg_root,
&qcom_socinfo->info.raw_device_num);
/* Fall through */
case SOCINFO_VERSION(0, 11):
case SOCINFO_VERSION(0, 10):
case SOCINFO_VERSION(0, 9):
qcom_socinfo->info.foundry_id = __le32_to_cpu(info->foundry_id);
debugfs_create_u32("foundry_id", 0400, qcom_socinfo->dbg_root,
&qcom_socinfo->info.foundry_id);
/* Fall through */
case SOCINFO_VERSION(0, 8):
case SOCINFO_VERSION(0, 7):
DEBUGFS_ADD(info, pmic_model);
DEBUGFS_ADD(info, pmic_die_rev);
/* Fall through */
case SOCINFO_VERSION(0, 6):
qcom_socinfo->info.hw_plat_subtype =
__le32_to_cpu(info->hw_plat_subtype);
debugfs_create_u32("hardware_platform_subtype", 0400,
qcom_socinfo->dbg_root,
&qcom_socinfo->info.hw_plat_subtype);
/* Fall through */
case SOCINFO_VERSION(0, 5):
qcom_socinfo->info.accessory_chip =
__le32_to_cpu(info->accessory_chip);
debugfs_create_u32("accessory_chip", 0400,
qcom_socinfo->dbg_root,
&qcom_socinfo->info.accessory_chip);
/* Fall through */
case SOCINFO_VERSION(0, 4):
qcom_socinfo->info.plat_ver = __le32_to_cpu(info->plat_ver);
debugfs_create_u32("platform_version", 0400,
qcom_socinfo->dbg_root,
&qcom_socinfo->info.plat_ver);
/* Fall through */
case SOCINFO_VERSION(0, 3):
qcom_socinfo->info.hw_plat = __le32_to_cpu(info->hw_plat);
debugfs_create_u32("hardware_platform", 0400,
qcom_socinfo->dbg_root,
&qcom_socinfo->info.hw_plat);
/* Fall through */
case SOCINFO_VERSION(0, 2):
qcom_socinfo->info.raw_ver = __le32_to_cpu(info->raw_ver);
debugfs_create_u32("raw_version", 0400, qcom_socinfo->dbg_root,
&qcom_socinfo->info.raw_ver);
/* Fall through */
case SOCINFO_VERSION(0, 1):
DEBUGFS_ADD(info, build_id);
break;
}
versions = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_IMAGE_VERSION_TABLE,
&size);
for (i = 0; i < ARRAY_SIZE(socinfo_image_names); i++) {
if (!socinfo_image_names[i])
continue;
dentry = debugfs_create_dir(socinfo_image_names[i],
qcom_socinfo->dbg_root);
debugfs_create_file("name", 0400, dentry, &versions[i],
&qcom_image_name_ops);
debugfs_create_file("variant", 0400, dentry, &versions[i],
&qcom_image_variant_ops);
debugfs_create_file("oem", 0400, dentry, &versions[i],
&qcom_image_oem_ops);
}
}
static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo)
{
debugfs_remove_recursive(qcom_socinfo->dbg_root);
}
#else
static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
struct socinfo *info)
{
}
static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo) { }
#endif /* CONFIG_DEBUG_FS */
static int qcom_socinfo_probe(struct platform_device *pdev)
{
struct qcom_socinfo *qs;
struct socinfo *info;
size_t item_size;
info = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_HW_SW_BUILD_ID,
&item_size);
if (IS_ERR(info)) {
dev_err(&pdev->dev, "Couldn't find socinfo\n");
return PTR_ERR(info);
}
qs = devm_kzalloc(&pdev->dev, sizeof(*qs), GFP_KERNEL);
if (!qs)
return -ENOMEM;
qs->attr.family = "Snapdragon";
qs->attr.machine = socinfo_machine(&pdev->dev,
le32_to_cpu(info->id));
qs->attr.revision = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%u.%u",
SOCINFO_MAJOR(le32_to_cpu(info->ver)),
SOCINFO_MINOR(le32_to_cpu(info->ver)));
if (offsetof(struct socinfo, serial_num) <= item_size)
qs->attr.serial_number = devm_kasprintf(&pdev->dev, GFP_KERNEL,
"%u",
le32_to_cpu(info->serial_num));
qs->soc_dev = soc_device_register(&qs->attr);
if (IS_ERR(qs->soc_dev))
return PTR_ERR(qs->soc_dev);
socinfo_debugfs_init(qs, info);
/* Feed the soc specific unique data into entropy pool */
add_device_randomness(info, item_size);
platform_set_drvdata(pdev, qs->soc_dev);
return 0;
}
static int qcom_socinfo_remove(struct platform_device *pdev)
{
struct qcom_socinfo *qs = platform_get_drvdata(pdev);
soc_device_unregister(qs->soc_dev);
socinfo_debugfs_exit(qs);
return 0;
}
static struct platform_driver qcom_socinfo_driver = {
.probe = qcom_socinfo_probe,
.remove = qcom_socinfo_remove,
.driver = {
.name = "qcom-socinfo",
},
};
module_platform_driver(qcom_socinfo_driver);
MODULE_DESCRIPTION("Qualcomm SoCinfo driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:qcom-socinfo");
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