[PATCH v4 2/4] ACPI: CPPC: Make autonomous selection helpers take a u64

[Sumit Gupta]

cppc_get_auto_sel()/cppc_set_auto_sel() use a bool, unlike the other
CPPC register get/set helpers which use a u64.

The next patch in this series saves and restores the OSPM-set registers
across CPU hotplug and driver unload through a common table of register
get/set helpers that all take a u64. The bool autonomous selection
helpers cannot be added to that table.

Change cppc_get_auto_sel()/cppc_set_auto_sel() to take a u64 so the
autonomous selection register fits alongside the others, and update
their callers.

Signed-off-by: Sumit Gupta <sumitg@xxxxxxxxxx>
---
 drivers/acpi/cppc_acpi.c       | 20 ++++----------------
 drivers/cpufreq/amd-pstate.c   |  2 +-
 drivers/cpufreq/cppc_cpufreq.c |  4 ++--
 include/acpi/cppc_acpi.h       |  8 ++++----
 4 files changed, 11 insertions(+), 23 deletions(-)

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index fef54fcd00b7..9e882b3911e6 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -1904,23 +1904,11 @@ EXPORT_SYMBOL_GPL(cppc_set_auto_act_window);
 /**
  * cppc_get_auto_sel() - Read autonomous selection register.
  * @cpu: CPU from which to read register.
- * @enable: Return address.
+ * @enable: Return address, set to 0 or 1.
  */
-int cppc_get_auto_sel(int cpu, bool *enable)
+int cppc_get_auto_sel(int cpu, u64 *enable)
 {
-	u64 auto_sel;
-	int ret;
-
-	if (enable == NULL)
-		return -EINVAL;
-
-	ret = cppc_get_reg_val(cpu, AUTO_SEL_ENABLE, &auto_sel);
-	if (ret)
-		return ret;
-
-	*enable = (bool)auto_sel;
-
-	return 0;
+	return cppc_get_reg_val(cpu, AUTO_SEL_ENABLE, enable);
 }
 EXPORT_SYMBOL_GPL(cppc_get_auto_sel);
 
@@ -1929,7 +1917,7 @@ EXPORT_SYMBOL_GPL(cppc_get_auto_sel);
  * @cpu    : CPU to which to write register.
  * @enable : the desired value of autonomous selection resiter to be updated.
  */
-int cppc_set_auto_sel(int cpu, bool enable)
+int cppc_set_auto_sel(int cpu, u64 enable)
 {
 	return cppc_set_reg_val(cpu, AUTO_SEL_ENABLE, enable);
 }
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index d4ff8b228f86..de0b29bfad61 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -499,7 +499,7 @@ static int shmem_init_perf(struct amd_cpudata *cpudata)
 	struct cppc_perf_caps cppc_perf;
 	union perf_cached perf = READ_ONCE(cpudata->perf);
 	u64 numerator;
-	bool auto_sel;
+	u64 auto_sel;
 
 	int ret = cppc_get_perf_caps(cpudata->cpu, &cppc_perf);
 	if (ret)
diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index 4b3da9a3e122..b50d3f893b1d 100644
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c
@@ -990,7 +990,7 @@ static ssize_t show_freqdomain_cpus(struct cpufreq_policy *policy, char *buf)
 
 static ssize_t show_auto_select(struct cpufreq_policy *policy, char *buf)
 {
-	bool val;
+	u64 val;
 	int ret;
 
 	ret = cppc_get_auto_sel(policy->cpu, &val);
@@ -1002,7 +1002,7 @@ static ssize_t show_auto_select(struct cpufreq_policy *policy, char *buf)
 	if (ret)
 		return ret;
 
-	return sysfs_emit(buf, "%d\n", val);
+	return sysfs_emit(buf, "%llu\n", val);
 }
 
 static ssize_t store_auto_select(struct cpufreq_policy *policy,
diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h
index 94a6277edab2..3394e1b208be 100644
--- a/include/acpi/cppc_acpi.h
+++ b/include/acpi/cppc_acpi.h
@@ -187,8 +187,8 @@ extern int cppc_set_epp_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls, bool e
 extern int cppc_set_epp(int cpu, u64 epp_val);
 extern int cppc_get_auto_act_window(int cpu, u64 *auto_act_window);
 extern int cppc_set_auto_act_window(int cpu, u64 auto_act_window);
-extern int cppc_get_auto_sel(int cpu, bool *enable);
-extern int cppc_set_auto_sel(int cpu, bool enable);
+extern int cppc_get_auto_sel(int cpu, u64 *enable);
+extern int cppc_set_auto_sel(int cpu, u64 enable);
 extern int cppc_get_perf_limited(int cpu, u64 *perf_limited);
 extern int cppc_set_perf_limited(int cpu, u64 bits_to_clear);
 extern int amd_get_highest_perf(unsigned int cpu, u32 *highest_perf);
@@ -285,11 +285,11 @@ static inline int cppc_set_auto_act_window(int cpu, u64 auto_act_window)
 {
 	return -EOPNOTSUPP;
 }
-static inline int cppc_get_auto_sel(int cpu, bool *enable)
+static inline int cppc_get_auto_sel(int cpu, u64 *enable)
 {
 	return -EOPNOTSUPP;
 }
-static inline int cppc_set_auto_sel(int cpu, bool enable)
+static inline int cppc_set_auto_sel(int cpu, u64 enable)
 {
 	return -EOPNOTSUPP;
 }
-- 
2.34.1