hwmon: (pmbus/ibm-cffps) Add mfg_id debugfs entry

Add support for the manufacturer ID to the debugfs entries.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Link: https://lore.kernel.org/r/20211004144339.2634330-1-bjwyman@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/pmbus/ibm-cffps.c b/drivers/hwmon/pmbus/ibm-cffps.c
index 53f7d14..226a60a 100644 (file)
--- a/drivers/hwmon/pmbus/ibm-cffps.c
+++ b/drivers/hwmon/pmbus/ibm-cffps.c
@@ -18,6 +18,7 @@
 
 #include "pmbus.h"
 
+#define CFFPS_MFG_ID_CMD                        0x99
 #define CFFPS_FRU_CMD                          0x9A
 #define CFFPS_PN_CMD                           0x9B
 #define CFFPS_HEADER_CMD                       0x9C
@@ -34,7 +35,7 @@
 #define CFFPS_INPUT_HISTORY_SIZE               100
 
 #define CFFPS_CCIN_REVISION                    GENMASK(7, 0)
-#define  CFFPS_CCIN_REVISION_LEGACY             0xde
+#define CFFPS_CCIN_REVISION_LEGACY              0xde
 #define CFFPS_CCIN_VERSION                     GENMASK(15, 8)
 #define CFFPS_CCIN_VERSION_1                    0x2b
 #define CFFPS_CCIN_VERSION_2                    0x2e
@@ -57,6 +58,7 @@
 
 enum {
        CFFPS_DEBUGFS_INPUT_HISTORY = 0,
+       CFFPS_DEBUGFS_MFG_ID,
        CFFPS_DEBUGFS_FRU,
        CFFPS_DEBUGFS_PN,
        CFFPS_DEBUGFS_HEADER,
@@ -158,6 +160,9 @@ static ssize_t ibm_cffps_debugfs_read(struct file *file, char __user *buf,
        switch (idx) {
        case CFFPS_DEBUGFS_INPUT_HISTORY:
                return ibm_cffps_read_input_history(psu, buf, count, ppos);
+       case CFFPS_DEBUGFS_MFG_ID:
+               cmd = CFFPS_MFG_ID_CMD;
+               break;
        case CFFPS_DEBUGFS_FRU:
                cmd = CFFPS_FRU_CMD;
                break;
@@ -564,6 +569,9 @@ static int ibm_cffps_probe(struct i2c_client *client)
        debugfs_create_file("input_history", 0444, ibm_cffps_dir,
                            &psu->debugfs_entries[CFFPS_DEBUGFS_INPUT_HISTORY],
                            &ibm_cffps_fops);
+       debugfs_create_file("mfg_id", 0444, ibm_cffps_dir,
+                           &psu->debugfs_entries[CFFPS_DEBUGFS_MFG_ID],
+                           &ibm_cffps_fops);
        debugfs_create_file("fru", 0444, ibm_cffps_dir,
                            &psu->debugfs_entries[CFFPS_DEBUGFS_FRU],
                            &ibm_cffps_fops);