cpufreq/amd-pstate: Add offline, online and suspend callbacks for amd_pstate_driver

JIRA: https://issues.redhat.com/browse/RHEL-106954

commit 98b52c6
Author: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com>
Date:   Mon Apr 28 06:25:21 2025 +0000

    cpufreq/amd-pstate: Add offline, online and suspend callbacks for amd_pstate_driver

    Rename and use the existing amd_pstate_epp callbacks for amd_pstate driver
    as well. Remove the debug print in online callback while at it.

    These callbacks will be needed to support the "Requested CPU Min Frequency"
    BIOS option.

    Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
    Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com>
    Link: https://lore.kernel.org/r/20250428062520.4997-2-dhananjay.ugwekar@amd.com
    Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>

Signed-off-by: Steve Best <sbest@redhat.com>

Author: sfbest

drivers/cpufreq/amd-pstate.c

@@ -1561,19 +1561,17 @@ static int amd_pstate_epp_set_policy(struct cpufreq_policy *policy)
 	return 0;
 }
 
-static int amd_pstate_epp_cpu_online(struct cpufreq_policy *policy)
+static int amd_pstate_cpu_online(struct cpufreq_policy *policy)
 {
-	pr_debug("AMD CPU Core %d going online\n", policy->cpu);
-
 	return amd_pstate_cppc_enable(policy);
 }
 
-static int amd_pstate_epp_cpu_offline(struct cpufreq_policy *policy)
+static int amd_pstate_cpu_offline(struct cpufreq_policy *policy)
 {
 	return 0;
 }
 
-static int amd_pstate_epp_suspend(struct cpufreq_policy *policy)
+static int amd_pstate_suspend(struct cpufreq_policy *policy)
 {
 	struct amd_cpudata *cpudata = policy->driver_data;
 
@@ -1611,6 +1609,9 @@ static struct cpufreq_driver amd_pstate_driver = {
 	.fast_switch    = amd_pstate_fast_switch,
 	.init		= amd_pstate_cpu_init,
 	.exit		= amd_pstate_cpu_exit,
+	.online		= amd_pstate_cpu_online,
+	.offline	= amd_pstate_cpu_offline,
+	.suspend	= amd_pstate_suspend,
 	.set_boost	= amd_pstate_set_boost,
 	.update_limits	= amd_pstate_update_limits,
 	.name		= "amd-pstate",
@@ -1623,9 +1624,9 @@ static struct cpufreq_driver amd_pstate_epp_driver = {
 	.setpolicy	= amd_pstate_epp_set_policy,
 	.init		= amd_pstate_epp_cpu_init,
 	.exit		= amd_pstate_epp_cpu_exit,
-	.offline	= amd_pstate_epp_cpu_offline,
-	.online		= amd_pstate_epp_cpu_online,
-	.suspend	= amd_pstate_epp_suspend,
+	.offline	= amd_pstate_cpu_offline,
+	.online		= amd_pstate_cpu_online,
+	.suspend	= amd_pstate_suspend,
 	.resume		= amd_pstate_epp_resume,
 	.update_limits	= amd_pstate_update_limits,
 	.set_boost	= amd_pstate_set_boost,