DEFINE_DEBUGFS_ATTRIBUTE(pmbus_debugfs_ops_status, pmbus_debugfs_get_status,
NULL, "0x%04llx\n");
+static ssize_t pmbus_debugfs_mfr_read(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ int rc;
+ struct pmbus_debugfs_entry *entry = file->private_data;
+ char data[I2C_SMBUS_BLOCK_MAX + 2] = { 0 };
+
+ rc = pmbus_read_block_data(entry->client, entry->page, entry->reg,
+ data);
+ if (rc < 0)
+ return rc;
+
+ /* Add newline at the end of a read data */
+ data[rc] = '\n';
+
+ /* Include newline into the length */
+ rc += 1;
+
+ return simple_read_from_buffer(buf, count, ppos, data, rc);
+}
+
+static const struct file_operations pmbus_debugfs_ops_mfr = {
+ .llseek = noop_llseek,
+ .read = pmbus_debugfs_mfr_read,
+ .write = NULL,
+ .open = simple_open,
+};
+
static void pmbus_remove_debugfs(void *data)
{
struct dentry *entry = data;
return -ENODEV;
}
- /* Allocate the max possible entries we need. */
+ /*
+ * Allocate the max possible entries we need.
+ * 6 entries device-specific
+ * 10 entries page-specific
+ */
entries = devm_kcalloc(data->dev,
- data->info->pages * 10, sizeof(*entries),
+ 6 + data->info->pages * 10, sizeof(*entries),
GFP_KERNEL);
if (!entries)
return -ENOMEM;
+ /*
+ * Add device-specific entries.
+ * Please note that the PMBUS standard allows all registers to be
+ * page-specific.
+ * To reduce the number of debugfs entries for devices with many pages
+ * assume that values of the following registers are the same for all
+ * pages and report values only for page 0.
+ */
+ if (pmbus_check_block_register(client, 0, PMBUS_MFR_ID)) {
+ entries[idx].client = client;
+ entries[idx].page = 0;
+ entries[idx].reg = PMBUS_MFR_ID;
+ debugfs_create_file("mfr_id", 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_block_register(client, 0, PMBUS_MFR_MODEL)) {
+ entries[idx].client = client;
+ entries[idx].page = 0;
+ entries[idx].reg = PMBUS_MFR_MODEL;
+ debugfs_create_file("mfr_model", 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_block_register(client, 0, PMBUS_MFR_REVISION)) {
+ entries[idx].client = client;
+ entries[idx].page = 0;
+ entries[idx].reg = PMBUS_MFR_REVISION;
+ debugfs_create_file("mfr_revision", 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_block_register(client, 0, PMBUS_MFR_LOCATION)) {
+ entries[idx].client = client;
+ entries[idx].page = 0;
+ entries[idx].reg = PMBUS_MFR_LOCATION;
+ debugfs_create_file("mfr_location", 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_block_register(client, 0, PMBUS_MFR_DATE)) {
+ entries[idx].client = client;
+ entries[idx].page = 0;
+ entries[idx].reg = PMBUS_MFR_DATE;
+ debugfs_create_file("mfr_date", 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_block_register(client, 0, PMBUS_MFR_SERIAL)) {
+ entries[idx].client = client;
+ entries[idx].page = 0;
+ entries[idx].reg = PMBUS_MFR_SERIAL;
+ debugfs_create_file("mfr_serial", 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ /* Add page specific entries */
for (i = 0; i < data->info->pages; ++i) {
/* Check accessibility of status register if it's not page 0 */
if (!i || pmbus_check_status_register(client, i)) {