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soc: qcom: socinfo: Expose custom attributes

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The Qualcomm socinfo provides a number of additional attributes,
add these to the socinfo driver and expose them via debugfs
functionality.

Tested-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Vaishali Thakkar <vaishali.thakkar@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Vaishali Thakkar 2019-07-24 04:05:14 +05:30 committed by Bjorn Andersson
parent efb448d0a3
commit 9c84c1e786
1 changed files with 190 additions and 0 deletions
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190
drivers/soc/qcom/socinfo.c
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@ -4,6 +4,7 @@
* Copyright (c) 2017-2019, Linaro Ltd. * Copyright (c) 2017-2019, Linaro Ltd.
*/ */
#include <linux/debugfs.h>
#include <linux/err.h> #include <linux/err.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
@ -20,6 +21,7 @@
*/ */
#define SOCINFO_MAJOR(ver) (((ver) >> 16) & 0xffff) #define SOCINFO_MAJOR(ver) (((ver) >> 16) & 0xffff)
#define SOCINFO_MINOR(ver) ((ver) & 0xffff) #define SOCINFO_MINOR(ver) ((ver) & 0xffff)
#define SOCINFO_VERSION(maj, min) ((((maj) & 0xffff) << 16)|((min) & 0xffff))
#define SMEM_SOCINFO_BUILD_ID_LENGTH 32 #define SMEM_SOCINFO_BUILD_ID_LENGTH 32
@ -29,6 +31,27 @@
*/ */
#define SMEM_HW_SW_BUILD_ID 137 #define SMEM_HW_SW_BUILD_ID 137
#ifdef CONFIG_DEBUG_FS
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 */ /* Socinfo SMEM item structure */
struct socinfo { struct socinfo {
__le32 fmt; __le32 fmt;
@ -67,9 +90,28 @@ struct socinfo {
__le32 raw_device_num; __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;
};
#endif /* CONFIG_DEBUG_FS */
struct qcom_socinfo { struct qcom_socinfo {
struct soc_device *soc_dev; struct soc_device *soc_dev;
struct soc_device_attribute attr; struct soc_device_attribute attr;
#ifdef CONFIG_DEBUG_FS
struct dentry *dbg_root;
struct socinfo_params info;
#endif /* CONFIG_DEBUG_FS */
}; };
struct soc_id { struct soc_id {
@ -130,6 +172,150 @@ static const char *socinfo_machine(struct device *dev, unsigned int id)
return NULL; 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);
static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
struct socinfo *info)
{
size_t size;
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);
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);
case SOCINFO_VERSION(0, 8):
case SOCINFO_VERSION(0, 7):
DEBUGFS_ADD(info, pmic_model);
DEBUGFS_ADD(info, pmic_die_rev);
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);
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);
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);
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);
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);
case SOCINFO_VERSION(0, 1):
DEBUGFS_ADD(info, build_id);
break;
}
}
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) static int qcom_socinfo_probe(struct platform_device *pdev)
{ {
struct qcom_socinfo *qs; struct qcom_socinfo *qs;
@ -162,6 +348,8 @@ static int qcom_socinfo_probe(struct platform_device *pdev)
if (IS_ERR(qs->soc_dev)) if (IS_ERR(qs->soc_dev))
return PTR_ERR(qs->soc_dev); return PTR_ERR(qs->soc_dev);
socinfo_debugfs_init(qs, info);
/* Feed the soc specific unique data into entropy pool */ /* Feed the soc specific unique data into entropy pool */
add_device_randomness(info, item_size); add_device_randomness(info, item_size);
@ -176,6 +364,8 @@ static int qcom_socinfo_remove(struct platform_device *pdev)
soc_device_unregister(qs->soc_dev); soc_device_unregister(qs->soc_dev);
socinfo_debugfs_exit(qs);
return 0; return 0;
} }