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soc: qcom: socinfo: add info from PMIC models array 

Add debugfs file showing information from PMIC model array.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20201222130448.4125297-3-dmitry.baryshkov@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Dmitry Baryshkov 2020-12-22 16:04:48 +03:00 committed by Bjorn Andersson
parent 4305324208
commit 734c78e7fe
1 changed files with 39 additions and 3 deletions
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42
drivers/soc/qcom/socinfo.c
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@ -15,6 +15,8 @@
#include <linux/sys_soc.h>
#include <linux/types.h>
#include <asm/unaligned.h>
/*
* SoC version type with major number in the upper 16 bits and minor
* number in the lower 16 bits.
@ -300,6 +302,32 @@ static int qcom_show_pmic_model(struct seq_file *seq, void *p)
return 0;
}
static int qcom_show_pmic_model_array(struct seq_file *seq, void *p)
{
struct socinfo *socinfo = seq->private;
unsigned int num_pmics = le32_to_cpu(socinfo->num_pmics);
unsigned int pmic_array_offset = le32_to_cpu(socinfo->pmic_array_offset);
int i;
void *ptr = socinfo;
ptr += pmic_array_offset;
/* No need for bounds checking, it happened at socinfo_debugfs_init */
for (i = 0; i < num_pmics; i++) {
unsigned int model = SOCINFO_MINOR(get_unaligned_le32(ptr + 2 * i * sizeof(u32)));
unsigned int die_rev = get_unaligned_le32(ptr + (2 * i + 1) * sizeof(u32));
if (model <= ARRAY_SIZE(pmic_models) && pmic_models[model])
seq_printf(seq, "%s %u.%u\n", pmic_models[model],
SOCINFO_MAJOR(le32_to_cpu(die_rev)),
SOCINFO_MINOR(le32_to_cpu(die_rev)));
else
seq_printf(seq, "unknown (%d)\n", model);
}
return 0;
}
static int qcom_show_pmic_die_revision(struct seq_file *seq, void *p)
{
struct socinfo *socinfo = seq->private;
@ -322,6 +350,7 @@ static int qcom_show_chip_id(struct seq_file *seq, void *p)
QCOM_OPEN(build_id, qcom_show_build_id);
QCOM_OPEN(pmic_model, qcom_show_pmic_model);
QCOM_OPEN(pmic_model_array, qcom_show_pmic_model_array);
QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);
QCOM_OPEN(chip_id, qcom_show_chip_id);
@ -350,12 +379,14 @@ DEFINE_IMAGE_OPS(variant);
DEFINE_IMAGE_OPS(oem);
static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
struct socinfo *info)
struct socinfo *info, size_t info_size)
{
struct smem_image_version *versions;
struct dentry *dentry;
size_t size;
int i;
unsigned int num_pmics;
unsigned int pmic_array_offset;
qcom_socinfo->dbg_root = debugfs_create_dir("qcom_socinfo", NULL);
@ -411,6 +442,11 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
&qcom_socinfo->info.raw_device_num);
fallthrough;
case SOCINFO_VERSION(0, 11):
num_pmics = le32_to_cpu(info->num_pmics);
pmic_array_offset = le32_to_cpu(info->pmic_array_offset);
if (pmic_array_offset + 2 * num_pmics * sizeof(u32) <= info_size)
DEBUGFS_ADD(info, pmic_model_array);
fallthrough;
case SOCINFO_VERSION(0, 10):
case SOCINFO_VERSION(0, 9):
qcom_socinfo->info.foundry_id = __le32_to_cpu(info->foundry_id);
@ -488,7 +524,7 @@ static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo)
}
#else
static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
struct socinfo *info)
struct socinfo *info, size_t info_size)
{
}
static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo) { }
@ -528,7 +564,7 @@ static int qcom_socinfo_probe(struct platform_device *pdev)
if (IS_ERR(qs->soc_dev))
return PTR_ERR(qs->soc_dev);
socinfo_debugfs_init(qs, info);
socinfo_debugfs_init(qs, info, item_size);
/* Feed the soc specific unique data into entropy pool */
add_device_randomness(info, item_size);