platform/x86/amd/pmf: Disable debugfs support for querying power thermals

The GET interface to receive the active power thermal information from
the PMFW has been deprecated. Hence drop the debugfs support from
version2 onwards.

Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Co-developed-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20240306114415.3267603-3-Shyam-sundar.S-k@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Author: Shyam Sundar S K

drivers/platform/x86/amd/pmf/core.c

@@ -113,8 +113,9 @@ static void amd_pmf_dbgfs_unregister(struct amd_pmf_dev *dev)
 static void amd_pmf_dbgfs_register(struct amd_pmf_dev *dev)
 {
 	dev->dbgfs_dir = debugfs_create_dir("amd_pmf", NULL);
-	debugfs_create_file("current_power_limits", 0644, dev->dbgfs_dir, dev,
-			    &current_power_limits_fops);
+	if (dev->pmf_if_version == PMF_IF_V1)
+		debugfs_create_file("current_power_limits", 0644, dev->dbgfs_dir, dev,
+				    &current_power_limits_fops);
 }
 
 int amd_pmf_get_power_source(void)

drivers/platform/x86/amd/pmf/pmf.h

@@ -87,6 +87,8 @@ struct cookie_header {
 #define TA_OUTPUT_RESERVED_MEM				906
 #define MAX_OPERATION_PARAMS					4
 
+#define PMF_IF_V1		1
+
 /* AMD PMF BIOS interfaces */
 struct apmf_verify_interface {
 	u16 size;