[PATCH v4 1/3] drm/amd/display: Add power_state member into current_state

[Mario Limonciello]

This can be used by the display core to let decisions be made based
upon the requested power state.

Cc: Qingqing Zhuo <qingqing.z...@amd.com>
Cc: Scott Bruce <smbr...@gmail.com>
Cc: Chris Hixon <linux-kernel-b...@hixontech.com>
Cc: spassw...@web.de
Signed-off-by: Mario Limonciello <mario.limoncie...@amd.com>
---
changes from v3->v4:
 * Initialize power_state when context is created (0 shouldn't be a valid state)
changes from v2->v3:
 * New patch
 drivers/gpu/drm/amd/display/dc/core/dc.c        | 3 +++
 drivers/gpu/drm/amd/display/dc/inc/core_types.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c 
b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 91c4874473d6..8edbb6c70512 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -1960,6 +1960,7 @@ static void init_state(struct dc *dc, struct dc_state 
*context)
 #ifdef CONFIG_DRM_AMD_DC_DCN
        memcpy(&context->bw_ctx.dml, &dc->dml, sizeof(struct display_mode_lib));
 #endif
+       context->power_state = DC_ACPI_CM_POWER_STATE_D0;
 }
 
 struct dc_state *dc_create_state(struct dc *dc)
@@ -3281,6 +3282,8 @@ void dc_set_power_state(
        if (!dc->current_state)
                return;
 
+       dc->current_state->power_state = power_state;
+
        switch (power_state) {
        case DC_ACPI_CM_POWER_STATE_D0:
                dc_resource_state_construct(dc, dc->current_state);
diff --git a/drivers/gpu/drm/amd/display/dc/inc/core_types.h 
b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
index 943240e2809e..6bd0aeed1856 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/core_types.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/core_types.h
@@ -506,6 +506,7 @@ struct dc_state {
        struct {
                unsigned int stutter_period_us;
        } perf_params;
+       enum dc_acpi_cm_power_state power_state;
 };
 
 #endif /* _CORE_TYPES_H_ */
-- 
2.25.1