drm/amd/powerplay: export interface to DAL to init/change display configuration.

BugLink: http://bugs.launchpad.net/bugs/1546572Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: David Rokhvarg <David.Rokhvarg@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
(cherry picked from commit 7fb72a1f)
Signed-off-by: Alberto Milone <alberto.milone@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -1639,6 +1639,7 @@ struct amdgpu_pm {
 	const struct amdgpu_dpm_funcs *funcs;
 	uint32_t                pcie_gen_mask;
 	uint32_t                pcie_mlw_mask;
+	struct amd_pp_display_configuration pm_display_cfg;/* set by DAL */
 };
 
 void amdgpu_get_pcie_info(struct amdgpu_device *adev);

drivers/gpu/drm/amd/powerplay/amd_powerplay.c

@@ -603,3 +603,19 @@ int amd_powerplay_fini(void *handle)
 
 	return 0;
 }
+
+/* export this function to DAL */
+
+int amd_powerplay_display_configuration_change(void *handle, const void *input)
+{
+	struct pp_hwmgr  *hwmgr;
+	const struct amd_pp_display_configuration *display_config = input;
+
+	if (handle == NULL)
+		return -EINVAL;
+
+	hwmgr = ((struct pp_instance *)handle)->hwmgr;
+
+	phm_store_dal_configuration_data(hwmgr, display_config);
+	return 0;
+}

drivers/gpu/drm/amd/powerplay/hwmgr/hardwaremanager.c

@@ -26,6 +26,7 @@
 #include "power_state.h"
 #include "pp_acpi.h"
 #include "amd_acpi.h"
+#include "amd_powerplay.h"
 
 void phm_init_dynamic_caps(struct pp_hwmgr *hwmgr)
 {
@@ -244,3 +245,18 @@ int phm_check_states_equal(struct pp_hwmgr *hwmgr,
 
 	return hwmgr->hwmgr_func->check_states_equal(hwmgr, pstate1, pstate2, equal);
 }
+
+int phm_store_dal_configuration_data(struct pp_hwmgr *hwmgr,
+		    const struct amd_pp_display_configuration *display_config)
+{
+	if (hwmgr == NULL || hwmgr->hwmgr_func->store_cc6_data == NULL)
+		return -EINVAL;
+
+	/* to do pass other display configuration in furture */
+	return hwmgr->hwmgr_func->store_cc6_data(hwmgr,
+					display_config->cpu_pstate_separation_time,
+					display_config->cpu_cc6_disable,
+					display_config->cpu_pstate_disable,
+					display_config->nb_pstate_switch_disable);
+
+}

drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h

@@ -131,6 +131,13 @@ struct amd_pp_init {
 	uint32_t rev_id;
 };
 
+struct amd_pp_display_configuration {
+	bool nb_pstate_switch_disable;/* controls NB PState switch */
+	bool cpu_cc6_disable; /* controls CPU CState switch ( on or off) */
+	bool cpu_pstate_disable;
+	uint32_t cpu_pstate_separation_time;
+};
+
 enum {
 	PP_GROUP_UNKNOWN = 0,
 	PP_GROUP_GFX = 1,
@@ -203,4 +210,6 @@ int amd_powerplay_init(struct amd_pp_init *pp_init,
 		       struct amd_powerplay *amd_pp);
 int amd_powerplay_fini(void *handle);
 
+int amd_powerplay_display_configuration_change(void *handle, const void *input);
+
 #endif /* _AMD_POWERPLAY_H_ */

drivers/gpu/drm/amd/powerplay/inc/hardwaremanager.h

@@ -353,5 +353,8 @@ extern int phm_check_states_equal(struct pp_hwmgr *hwmgr,
 				 const struct pp_hw_power_state *pstate2,
 				 bool *equal);
 
+extern int phm_store_dal_configuration_data(struct pp_hwmgr *hwmgr,
+		    const struct amd_pp_display_configuration *display_config);
+
 #endif /* _HARDWARE_MANAGER_H_ */