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hwmon: (pmbus/core) Report content of CAPABILITY register in debugfs

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Report the value of the CAPABILITY register in debugfs if supported.
Only check if the register is supported if PMBUS_NO_CAPABILITY
is not set.

Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck
2025-02-01 06:42:29 -08:00
parent 64fbb4c42a
commit c90a00368d
1 changed files with 11 additions and 2 deletions
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drivers/hwmon/pmbus/pmbus_core.c
+11 -2
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@@ -3568,12 +3568,12 @@ static void pmbus_init_debugfs(struct i2c_client *client,
/*
* Allocate the max possible entries we need.
* device specific:
* ARRAY_SIZE(pmbus_debugfs_block_data) + 1
* ARRAY_SIZE(pmbus_debugfs_block_data) + 2
* page specific:
* ARRAY_SIZE(pmbus_debugfs_status_data) + 1
*/
entries = devm_kcalloc(data->dev,
ARRAY_SIZE(pmbus_debugfs_block_data) + 1 +
ARRAY_SIZE(pmbus_debugfs_block_data) + 2 +
data->info->pages * (ARRAY_SIZE(pmbus_debugfs_status_data) + 1),
sizeof(*entries), GFP_KERNEL);
if (!entries)
@@ -3587,6 +3587,15 @@ static void pmbus_init_debugfs(struct i2c_client *client,
* assume that values of the following registers are the same for all
* pages and report values only for page 0.
*/
if (!(data->flags & PMBUS_NO_CAPABILITY) &&
pmbus_check_byte_register(client, 0, PMBUS_CAPABILITY)) {
entries[idx].client = client;
entries[idx].page = 0;
entries[idx].reg = PMBUS_CAPABILITY;
debugfs_create_file("capability", 0444, debugfs,
&entries[idx++],
&pmbus_debugfs_ops);
}
if (pmbus_check_byte_register(client, 0, PMBUS_REVISION)) {
entries[idx].client = client;
entries[idx].page = 0;