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author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2020-12-22 16:04:48 +0300 |
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committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2021-01-15 08:56:49 -0600 |
commit | 734c78e7febf879a79e9b34e38df35cc63794350 (patch) | |
tree | e372bd98c04c1043a3f33c2f50042b3421654742 /drivers/soc/qcom | |
parent | 4305324208d8da4b4ce0efb20af9745effda3a2e (diff) | |
download | linux-stable-734c78e7febf879a79e9b34e38df35cc63794350.tar.gz linux-stable-734c78e7febf879a79e9b34e38df35cc63794350.tar.bz2 linux-stable-734c78e7febf879a79e9b34e38df35cc63794350.zip |
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>
Diffstat (limited to 'drivers/soc/qcom')
-rw-r--r-- | drivers/soc/qcom/socinfo.c | 42 |
1 files changed, 39 insertions, 3 deletions
diff --git a/drivers/soc/qcom/socinfo.c b/drivers/soc/qcom/socinfo.c index 5536f1dd1d07..f5c190ceb667 100644 --- a/drivers/soc/qcom/socinfo.c +++ b/drivers/soc/qcom/socinfo.c @@ -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); |