[PATCH v3 3/4] ACPI: CPPC: Add autonomous selection ABIs

Lifeng Zheng
2024-12-16T09:16:17Z

cppc_set_epp - write energy performance preference register

cppc_get_auto_act_window - read autonomous activity window register

cppc_set_auto_act_window - write autonomous activity window register

cppc_get_auto_sel - read autonomous selection enable register

Signed-off-by: Lifeng Zheng <zhenglifeng1@huawei.com>
---
drivers/acpi/cppc_acpi.c | 44 ++++++++++++++++++++++++++++++++++++++++
include/acpi/cppc_acpi.h | 20 ++++++++++++++++++
2 files changed, 64 insertions(+)

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 83c7fcad74ad..645f2366c888 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -1595,6 +1595,50 @@ int cppc_set_epp_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls, bool enable)
}
EXPORT_SYMBOL_GPL(cppc_set_epp_perf);

+/**
+ * cppc_set_epp() - Write the EPP register.
+ * @cpu: CPU on which to write register.
+ * @epp_val: Value to write to the EPP register.
+ */
+int cppc_set_epp(int cpu, u64 epp_val)
+{
+ return cppc_set_reg_val(cpu, ENERGY_PERF, epp_val);
+}
+EXPORT_SYMBOL_GPL(cppc_set_epp);
+
+/**
+ * cppc_get_auto_act_window() - Read autonomous activity window register.
+ * @cpu: CPU from which to read register.
+ * @auto_act_window: Return address.
+ */
+int cppc_get_auto_act_window(int cpu, u64 *auto_act_window)
+{
+ return cppc_get_reg_val(cpu, AUTO_ACT_WINDOW, auto_act_window);
+}
+EXPORT_SYMBOL_GPL(cppc_get_auto_act_window);
+
+/**
+ * cppc_set_auto_act_window() - Write autonomous activity window register.
+ * @cpu: CPU on which to write register.
+ * @auto_act_window: Value to write to the autonomous activity window register.
+ */
+int cppc_set_auto_act_window(int cpu, u64 auto_act_window)
+{
+ return cppc_set_reg_val(cpu, AUTO_ACT_WINDOW, auto_act_window);
+}
+EXPORT_SYMBOL_GPL(cppc_set_auto_act_window);
+
+/**
+ * cppc_get_auto_sel() - Read autonomous selection register.
+ * @cpu: CPU from which to read register.
+ * @auto_sel: Return address.
+ */
+int cppc_get_auto_sel(int cpu, u64 *auto_sel)
+{
+ return cppc_get_reg_val(cpu, AUTO_SEL_ENABLE, auto_sel);
+}
+EXPORT_SYMBOL_GPL(cppc_get_auto_sel);
+
/**
* cppc_get_auto_sel_caps - Read autonomous selection register.
* @cpunum : CPU from which to read register.
diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h
index 62d368bcd9ec..134931b081a0 100644
--- a/include/acpi/cppc_acpi.h
+++ b/include/acpi/cppc_acpi.h
@@ -159,6 +159,10 @@ extern int cpc_read_ffh(int cpunum, struct cpc_reg *reg, u64 *val);
extern int cpc_write_ffh(int cpunum, struct cpc_reg *reg, u64 val);
extern int cppc_get_epp_perf(int cpunum, u64 *epp_perf);
extern int cppc_set_epp_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls, bool enable);
+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, u64 *auto_sel);
extern int cppc_get_auto_sel_caps(int cpunum, struct cppc_perf_caps *perf_caps);
extern int cppc_set_auto_sel(int cpu, bool enable);
extern int amd_get_highest_perf(unsigned int cpu, u32 *highest_perf);
@@ -225,6 +229,22 @@ static inline int cppc_set_epp_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls,
{
return -EOPNOTSUPP;
}
+static inline int cppc_set_epp(int cpu, u64 epp_val)
+{
+ return -EOPNOTSUPP;
+}
+static inline int cppc_get_auto_act_window(int cpu, u64 *auto_act_window)
+{
+ return -EOPNOTSUPP;
+}
+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, u64 *auto_sel)
+{
+ return -EOPNOTSUPP;
+}
static inline int cppc_get_epp_perf(int cpunum, u64 *epp_perf)
{
return -EOPNOTSUPP;
--
2.33.0