drm/radeon/kms/pm: add asic specific callbacks for getting power state (v2)

This also simplifies the code and enables reclocking with multiple heads
active by tracking whether the power states are single or multi-head
capable.

Eventually, we will want to select a power state based on external
factors (AC/DC state, user selection, etc.).

(v2) Update for evergreen

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 18 insertions, 7 deletions

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 11fe1d1..b5eccc4 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -672,6 +672,9 @@ struct radeon_pm_clock_info {
 	u32 flags;
 };
 
+/* state flags */
+#define RADEON_PM_SINGLE_DISPLAY_ONLY (1 << 0)
+
 struct radeon_power_state {
 	enum radeon_pm_state_type type;
 	/* XXX: use a define for num clock modes */
@@ -682,6 +685,8 @@ struct radeon_power_state {
 	/* non clock info about this state */
 	struct radeon_pm_non_clock_info non_clock_info;
 	bool voltage_drop_active;
+	/* standardized state flags */
+	u32 flags;
 };
 
 /*
@@ -695,8 +700,10 @@ struct radeon_pm {
 	enum radeon_pm_state	state;
 	enum radeon_pm_action	planned_action;
 	unsigned long		action_timeout;
-	bool 			downclocked;
-	int			active_crtcs;
+	bool                    can_upclock;
+	bool                    can_downclock;
+	u32			active_crtcs;
+	int			active_crtc_count;
 	int			req_vblank;
 	bool			vblank_sync;
 	bool			gui_idle;
@@ -716,11 +723,13 @@ struct radeon_pm {
 	struct radeon_power_state power_state[8];
 	/* number of valid power states */
 	int                     num_power_states;
-	struct radeon_power_state *current_power_state;
-	struct radeon_pm_clock_info *current_clock_mode;
-	struct radeon_power_state *requested_power_state;
-	struct radeon_pm_clock_info *requested_clock_mode;
-	struct radeon_power_state *default_power_state;
+	int                     current_power_state_index;
+	int                     current_clock_mode_index;
+	int                     requested_power_state_index;
+	int                     requested_clock_mode_index;
+	int                     default_power_state_index;
+	u32                     current_sclk;
+	u32                     current_mclk;
 	struct radeon_i2c_chan *i2c_bus;
 };
 
@@ -810,6 +819,7 @@ struct radeon_asic {
 	 */
 	void (*ioctl_wait_idle)(struct radeon_device *rdev, struct radeon_bo *bo);
 	bool (*gui_idle)(struct radeon_device *rdev);
+	void (*get_power_state)(struct radeon_device *rdev, enum radeon_pm_action action);
 	void (*set_power_state)(struct radeon_device *rdev);
 };
 
@@ -1218,6 +1228,7 @@ static inline void radeon_ring_write(struct radeon_device *rdev, uint32_t v)
 #define radeon_hpd_sense(rdev, hpd) (rdev)->asic->hpd_sense((rdev), (hpd))
 #define radeon_hpd_set_polarity(rdev, hpd) (rdev)->asic->hpd_set_polarity((rdev), (hpd))
 #define radeon_gui_idle(rdev) (rdev)->asic->gui_idle((rdev))
+#define radeon_get_power_state(rdev, a) (rdev)->asic->get_power_state((rdev), (a))
 #define radeon_set_power_state(rdev) (rdev)->asic->set_power_state((rdev))
 
 /* Common functions */