[PATCH 05/22] drm/radeon/rv7xx/eg: implement get_current_sclk/mclk

[Alex Deucher]

Will be used for exposing current clocks via INFO ioctl.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/radeon/radeon_asic.c |  4 ++++
 drivers/gpu/drm/radeon/radeon_asic.h |  2 ++
 drivers/gpu/drm/radeon/rv770_dpm.c   | 44 ++++++++++++++++++++++++++++++++++++
 3 files changed, 50 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index af9dbe8..aae302e 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1262,6 +1262,8 @@ static struct radeon_asic rv770_asic = {
 		.debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
 		.force_performance_level = &rv770_dpm_force_performance_level,
 		.vblank_too_short = &rv770_dpm_vblank_too_short,
+		.get_current_sclk = &rv770_dpm_get_current_sclk,
+		.get_current_mclk = &rv770_dpm_get_current_mclk,
 	},
 	.pflip = {
 		.page_flip = &rv770_page_flip,
@@ -1380,6 +1382,8 @@ static struct radeon_asic evergreen_asic = {
 		.debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
 		.force_performance_level = &rv770_dpm_force_performance_level,
 		.vblank_too_short = &cypress_dpm_vblank_too_short,
+		.get_current_sclk = &rv770_dpm_get_current_sclk,
+		.get_current_mclk = &rv770_dpm_get_current_mclk,
 	},
 	.pflip = {
 		.page_flip = &evergreen_page_flip,
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 5252aef..15e9312 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -494,6 +494,8 @@ void rv770_dpm_debugfs_print_current_performance_level(struct radeon_device *rde
 int rv770_dpm_force_performance_level(struct radeon_device *rdev,
 				      enum radeon_dpm_forced_level level);
 bool rv770_dpm_vblank_too_short(struct radeon_device *rdev);
+u32 rv770_dpm_get_current_sclk(struct radeon_device *rdev);
+u32 rv770_dpm_get_current_mclk(struct radeon_device *rdev);
 
 /*
  * evergreen
diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index 3c76e1d..da751910 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -2487,6 +2487,50 @@ void rv770_dpm_debugfs_print_current_performance_level(struct radeon_device *rde
 	}
 }
 
+u32 rv770_dpm_get_current_sclk(struct radeon_device *rdev)
+{
+	struct radeon_ps *rps = rdev->pm.dpm.current_ps;
+	struct rv7xx_ps *ps = rv770_get_ps(rps);
+	struct rv7xx_pl *pl;
+	u32 current_index =
+		(RREG32(TARGET_AND_CURRENT_PROFILE_INDEX) & CURRENT_PROFILE_INDEX_MASK) >>
+		CURRENT_PROFILE_INDEX_SHIFT;
+
+	if (current_index > 2) {
+		return 0;
+	} else {
+		if (current_index == 0)
+			pl = &ps->low;
+		else if (current_index == 1)
+			pl = &ps->medium;
+		else /* current_index == 2 */
+			pl = &ps->high;
+		return  pl->sclk;
+	}
+}
+
+u32 rv770_dpm_get_current_mclk(struct radeon_device *rdev)
+{
+	struct radeon_ps *rps = rdev->pm.dpm.current_ps;
+	struct rv7xx_ps *ps = rv770_get_ps(rps);
+	struct rv7xx_pl *pl;
+	u32 current_index =
+		(RREG32(TARGET_AND_CURRENT_PROFILE_INDEX) & CURRENT_PROFILE_INDEX_MASK) >>
+		CURRENT_PROFILE_INDEX_SHIFT;
+
+	if (current_index > 2) {
+		return 0;
+	} else {
+		if (current_index == 0)
+			pl = &ps->low;
+		else if (current_index == 1)
+			pl = &ps->medium;
+		else /* current_index == 2 */
+			pl = &ps->high;
+		return  pl->mclk;
+	}
+}
+
 void rv770_dpm_fini(struct radeon_device *rdev)
 {
 	int i;
-- 
1.8.3.1