[PATCH 8/8] hwmon: (pmbus/core) Report content of CAPABILITY register in debugfs

[Guenter Roeck <linux@roeck-us.net>]

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.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/hwmon/pmbus/pmbus_core.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index f4d4a91ff4aa..b2e3cd1ec941 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -3585,6 +3585,15 @@ 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;
-- 
2.45.2