From: Alex Deucher <alexander.deucher@amd.com>
Date: Fri, 23 Aug 2013 15:56:26 +0000 (-0400)
Subject: drm/radeon/dpm: enable dynamic vce state switching v2
X-Git-Tag: v3.15-rc1~51^2~60^2~6
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03afe6f6480f2544d6cd18866556f1f76bb05f14;p=pandora-kernel.git

drm/radeon/dpm: enable dynamic vce state switching v2

enable vce states when vce is active.  When vce is active,
it adjusts the currently selected state (performance, battery,
uvd, etc.)

v2: add code comments

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
---

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 693a8fccd94d..540624e7491c 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1518,6 +1518,7 @@ struct radeon_dpm {
 };
 
 void radeon_dpm_enable_uvd(struct radeon_device *rdev, bool enable);
+void radeon_dpm_enable_vce(struct radeon_device *rdev, bool enable);
 
 struct radeon_pm {
 	struct mutex		mutex;
@@ -1638,6 +1639,7 @@ struct radeon_vce {
 	unsigned		fb_version;
 	atomic_t		handles[RADEON_MAX_VCE_HANDLES];
 	struct drm_file		*filp[RADEON_MAX_VCE_HANDLES];
+	struct delayed_work	idle_work;
 };
 
 int radeon_vce_init(struct radeon_device *rdev);
@@ -1649,6 +1651,7 @@ int radeon_vce_get_create_msg(struct radeon_device *rdev, int ring,
 int radeon_vce_get_destroy_msg(struct radeon_device *rdev, int ring,
 			       uint32_t handle, struct radeon_fence **fence);
 void radeon_vce_free_handles(struct radeon_device *rdev, struct drm_file *filp);
+void radeon_vce_note_usage(struct radeon_device *rdev);
 int radeon_vce_cs_reloc(struct radeon_cs_parser *p, int lo, int hi);
 int radeon_vce_cs_parse(struct radeon_cs_parser *p);
 bool radeon_vce_semaphore_emit(struct radeon_device *rdev,
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 701ee7981b5c..f28a8d82fa19 100644
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -347,6 +347,9 @@ static int radeon_cs_ib_chunk(struct radeon_device *rdev,
 
 	if (parser->ring == R600_RING_TYPE_UVD_INDEX)
 		radeon_uvd_note_usage(rdev);
+	else if ((parser->ring == TN_RING_TYPE_VCE1_INDEX) ||
+		 (parser->ring == TN_RING_TYPE_VCE2_INDEX))
+		radeon_vce_note_usage(rdev);
 
 	radeon_cs_sync_rings(parser);
 	r = radeon_ib_schedule(rdev, &parser->ib, NULL);
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index a4687e7b45f8..4ad9af9fc517 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -968,6 +968,23 @@ void radeon_dpm_enable_uvd(struct radeon_device *rdev, bool enable)
 	}
 }
 
+void radeon_dpm_enable_vce(struct radeon_device *rdev, bool enable)
+{
+	if (enable) {
+		mutex_lock(&rdev->pm.mutex);
+		rdev->pm.dpm.vce_active = true;
+		/* XXX select vce level based on ring/task */
+		rdev->pm.dpm.vce_level = RADEON_VCE_LEVEL_AC_ALL;
+		mutex_unlock(&rdev->pm.mutex);
+	} else {
+		mutex_lock(&rdev->pm.mutex);
+		rdev->pm.dpm.vce_active = false;
+		mutex_unlock(&rdev->pm.mutex);
+	}
+
+	radeon_pm_compute_clocks(rdev);
+}
+
 static void radeon_pm_suspend_old(struct radeon_device *rdev)
 {
 	mutex_lock(&rdev->pm.mutex);
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