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soc: qcom: socinfo: Expose custom attributes
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
Bjorn Andersson
parent
efb448d0a3
commit
9c84c1e786
1 changed files with 190 additions and 0 deletions
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@ -4,6 +4,7 @@
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* Copyright (c) 2017-2019, Linaro Ltd.
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*/
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#include <linux/debugfs.h>
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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@ -20,6 +21,7 @@
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*/
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#define SOCINFO_MAJOR(ver) (((ver) >> 16) & 0xffff)
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#define SOCINFO_MINOR(ver) ((ver) & 0xffff)
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#define SOCINFO_VERSION(maj, min) ((((maj) & 0xffff) << 16)|((min) & 0xffff))
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#define SMEM_SOCINFO_BUILD_ID_LENGTH 32
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@ -29,6 +31,27 @@
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*/
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#define SMEM_HW_SW_BUILD_ID 137
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#ifdef CONFIG_DEBUG_FS
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static const char *const pmic_models[] = {
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[0] = "Unknown PMIC model",
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[9] = "PM8994",
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[11] = "PM8916",
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[13] = "PM8058",
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[14] = "PM8028",
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[15] = "PM8901",
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[16] = "PM8027",
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[17] = "ISL9519",
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[18] = "PM8921",
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[19] = "PM8018",
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[20] = "PM8015",
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[21] = "PM8014",
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[22] = "PM8821",
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[23] = "PM8038",
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[24] = "PM8922",
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[25] = "PM8917",
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};
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#endif /* CONFIG_DEBUG_FS */
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/* Socinfo SMEM item structure */
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struct socinfo {
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__le32 fmt;
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@ -67,9 +90,28 @@ struct socinfo {
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__le32 raw_device_num;
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};
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#ifdef CONFIG_DEBUG_FS
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struct socinfo_params {
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u32 raw_device_family;
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u32 hw_plat_subtype;
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u32 accessory_chip;
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u32 raw_device_num;
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u32 chip_family;
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u32 foundry_id;
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u32 plat_ver;
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u32 raw_ver;
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u32 hw_plat;
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u32 fmt;
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};
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#endif /* CONFIG_DEBUG_FS */
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struct qcom_socinfo {
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struct soc_device *soc_dev;
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struct soc_device_attribute attr;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *dbg_root;
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struct socinfo_params info;
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#endif /* CONFIG_DEBUG_FS */
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};
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struct soc_id {
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@ -130,6 +172,150 @@ static const char *socinfo_machine(struct device *dev, unsigned int id)
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return NULL;
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}
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#ifdef CONFIG_DEBUG_FS
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#define QCOM_OPEN(name, _func) \
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static int qcom_open_##name(struct inode *inode, struct file *file) \
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{ \
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return single_open(file, _func, inode->i_private); \
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} \
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\
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static const struct file_operations qcom_ ##name## _ops = { \
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.open = qcom_open_##name, \
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.read = seq_read, \
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.llseek = seq_lseek, \
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.release = single_release, \
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}
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#define DEBUGFS_ADD(info, name) \
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debugfs_create_file(__stringify(name), 0400, \
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qcom_socinfo->dbg_root, \
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info, &qcom_ ##name## _ops)
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static int qcom_show_build_id(struct seq_file *seq, void *p)
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{
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struct socinfo *socinfo = seq->private;
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seq_printf(seq, "%s\n", socinfo->build_id);
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return 0;
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}
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static int qcom_show_pmic_model(struct seq_file *seq, void *p)
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{
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struct socinfo *socinfo = seq->private;
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int model = SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_model));
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if (model < 0)
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return -EINVAL;
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seq_printf(seq, "%s\n", pmic_models[model]);
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return 0;
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}
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static int qcom_show_pmic_die_revision(struct seq_file *seq, void *p)
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{
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struct socinfo *socinfo = seq->private;
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seq_printf(seq, "%u.%u\n",
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SOCINFO_MAJOR(le32_to_cpu(socinfo->pmic_die_rev)),
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SOCINFO_MINOR(le32_to_cpu(socinfo->pmic_die_rev)));
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return 0;
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}
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QCOM_OPEN(build_id, qcom_show_build_id);
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QCOM_OPEN(pmic_model, qcom_show_pmic_model);
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QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);
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static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
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struct socinfo *info)
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{
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size_t size;
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qcom_socinfo->dbg_root = debugfs_create_dir("qcom_socinfo", NULL);
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qcom_socinfo->info.fmt = __le32_to_cpu(info->fmt);
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switch (qcom_socinfo->info.fmt) {
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case SOCINFO_VERSION(0, 12):
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qcom_socinfo->info.chip_family =
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__le32_to_cpu(info->chip_family);
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qcom_socinfo->info.raw_device_family =
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__le32_to_cpu(info->raw_device_family);
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qcom_socinfo->info.raw_device_num =
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__le32_to_cpu(info->raw_device_num);
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debugfs_create_x32("chip_family", 0400, qcom_socinfo->dbg_root,
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&qcom_socinfo->info.chip_family);
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debugfs_create_x32("raw_device_family", 0400,
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qcom_socinfo->dbg_root,
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&qcom_socinfo->info.raw_device_family);
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debugfs_create_x32("raw_device_number", 0400,
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qcom_socinfo->dbg_root,
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&qcom_socinfo->info.raw_device_num);
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case SOCINFO_VERSION(0, 11):
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case SOCINFO_VERSION(0, 10):
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case SOCINFO_VERSION(0, 9):
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qcom_socinfo->info.foundry_id = __le32_to_cpu(info->foundry_id);
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debugfs_create_u32("foundry_id", 0400, qcom_socinfo->dbg_root,
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&qcom_socinfo->info.foundry_id);
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case SOCINFO_VERSION(0, 8):
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case SOCINFO_VERSION(0, 7):
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DEBUGFS_ADD(info, pmic_model);
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DEBUGFS_ADD(info, pmic_die_rev);
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case SOCINFO_VERSION(0, 6):
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qcom_socinfo->info.hw_plat_subtype =
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__le32_to_cpu(info->hw_plat_subtype);
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debugfs_create_u32("hardware_platform_subtype", 0400,
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qcom_socinfo->dbg_root,
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&qcom_socinfo->info.hw_plat_subtype);
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case SOCINFO_VERSION(0, 5):
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qcom_socinfo->info.accessory_chip =
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__le32_to_cpu(info->accessory_chip);
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debugfs_create_u32("accessory_chip", 0400,
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qcom_socinfo->dbg_root,
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&qcom_socinfo->info.accessory_chip);
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case SOCINFO_VERSION(0, 4):
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qcom_socinfo->info.plat_ver = __le32_to_cpu(info->plat_ver);
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debugfs_create_u32("platform_version", 0400,
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qcom_socinfo->dbg_root,
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&qcom_socinfo->info.plat_ver);
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case SOCINFO_VERSION(0, 3):
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qcom_socinfo->info.hw_plat = __le32_to_cpu(info->hw_plat);
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debugfs_create_u32("hardware_platform", 0400,
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qcom_socinfo->dbg_root,
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&qcom_socinfo->info.hw_plat);
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case SOCINFO_VERSION(0, 2):
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qcom_socinfo->info.raw_ver = __le32_to_cpu(info->raw_ver);
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debugfs_create_u32("raw_version", 0400, qcom_socinfo->dbg_root,
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&qcom_socinfo->info.raw_ver);
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case SOCINFO_VERSION(0, 1):
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DEBUGFS_ADD(info, build_id);
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break;
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}
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}
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static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo)
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{
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debugfs_remove_recursive(qcom_socinfo->dbg_root);
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}
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#else
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static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
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struct socinfo *info)
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{
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}
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static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo) { }
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#endif /* CONFIG_DEBUG_FS */
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static int qcom_socinfo_probe(struct platform_device *pdev)
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{
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struct qcom_socinfo *qs;
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@ -162,6 +348,8 @@ static int qcom_socinfo_probe(struct platform_device *pdev)
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if (IS_ERR(qs->soc_dev))
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return PTR_ERR(qs->soc_dev);
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socinfo_debugfs_init(qs, info);
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/* Feed the soc specific unique data into entropy pool */
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add_device_randomness(info, item_size);
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@ -176,6 +364,8 @@ static int qcom_socinfo_remove(struct platform_device *pdev)
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soc_device_unregister(qs->soc_dev);
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socinfo_debugfs_exit(qs);
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return 0;
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}
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