Add registers to debugfs:
PMBUS_MFR_ID
PMBUS_MFR_MODEL
PMBUS_MFR_REVISION
PMBUS_MFR_LOCATION
PMBUS_MFR_DATE
PMBUS_MFR_SERIAL
Signed-off-by: Adam Wujek <[email protected]>
---
Notes:
Changes in v2:
- Rebase to the latest kernel
- Marked wrongly as a part of series of patches
Changes in v3:
- Submit as a single patch. V2 was wrongly submitted as a part of
series of patches
- Add justification for "rc += 2;"
- Increase allocated memory for debugfs entries
Changes in v4:
- Change "rc += 2;" into "rc += 1;". With "rc += 2" an extra '\0' is
observed after '\n' at the end of debugfs file's output.
drivers/hwmon/pmbus/pmbus_core.c | 89 +++++++++++++++++++++++++++++++-
1 file changed, 88 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index d93574d6a1fb..a791e5f08fb2 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -2627,6 +2627,33 @@ static int pmbus_debugfs_get_status(void *data, u64 *val)
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 = i2c_smbus_read_block_data(entry->client, 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 int pmbus_debugfs_get_pec(void *data, u64 *val)
{
struct i2c_client *client = data;
@@ -2693,7 +2720,7 @@ static int pmbus_init_debugfs(struct i2c_client *client,
/* Allocate the max possible entries we need. */
entries = devm_kcalloc(data->dev,
- data->info->pages * 10, sizeof(*entries),
+ data->info->pages * 16, sizeof(*entries),
GFP_KERNEL);
if (!entries)
return -ENOMEM;
@@ -2803,6 +2830,66 @@ static int pmbus_init_debugfs(struct i2c_client *client,
&entries[idx++],
&pmbus_debugfs_ops);
}
+
+ if (pmbus_check_byte_register(client, i, PMBUS_MFR_ID)) {
+ entries[idx].client = client;
+ entries[idx].page = i;
+ entries[idx].reg = PMBUS_MFR_ID;
+ scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_id", i);
+ debugfs_create_file(name, 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_byte_register(client, i, PMBUS_MFR_MODEL)) {
+ entries[idx].client = client;
+ entries[idx].page = i;
+ entries[idx].reg = PMBUS_MFR_MODEL;
+ scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_model", i);
+ debugfs_create_file(name, 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_byte_register(client, i, PMBUS_MFR_REVISION)) {
+ entries[idx].client = client;
+ entries[idx].page = i;
+ entries[idx].reg = PMBUS_MFR_REVISION;
+ scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_revision", i);
+ debugfs_create_file(name, 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_byte_register(client, i, PMBUS_MFR_LOCATION)) {
+ entries[idx].client = client;
+ entries[idx].page = i;
+ entries[idx].reg = PMBUS_MFR_LOCATION;
+ scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_location", i);
+ debugfs_create_file(name, 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_byte_register(client, i, PMBUS_MFR_DATE)) {
+ entries[idx].client = client;
+ entries[idx].page = i;
+ entries[idx].reg = PMBUS_MFR_DATE;
+ scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_date", i);
+ debugfs_create_file(name, 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
+
+ if (pmbus_check_byte_register(client, i, PMBUS_MFR_SERIAL)) {
+ entries[idx].client = client;
+ entries[idx].page = i;
+ entries[idx].reg = PMBUS_MFR_SERIAL;
+ scnprintf(name, PMBUS_NAME_SIZE, "mfr%d_serial", i);
+ debugfs_create_file(name, 0444, data->debugfs,
+ &entries[idx++],
+ &pmbus_debugfs_ops_mfr);
+ }
}
return devm_add_action_or_reset(data->dev,
--
2.25.1