[PATCH 2/3] drm/amdgpu: add new device suspend and resume parameters

[Alex Deucher]

Add support for asic_reset and asic_init to the device
suspend and resume functions.

No change in functionality.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h        |  6 ++++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 14 +++++++++-----
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    | 12 ++++++------
 3 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 8494514..6f94754 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -2434,8 +2434,10 @@ void amdgpu_driver_postclose_kms(struct drm_device *dev,
 				 struct drm_file *file_priv);
 void amdgpu_driver_preclose_kms(struct drm_device *dev,
 				struct drm_file *file_priv);
-int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon);
-int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon);
+int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon,
+			  bool asic_reset);
+int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon,
+			 bool asic_init);
 u32 amdgpu_get_vblank_counter_kms(struct drm_device *dev, unsigned int pipe);
 int amdgpu_enable_vblank_kms(struct drm_device *dev, unsigned int pipe);
 void amdgpu_disable_vblank_kms(struct drm_device *dev, unsigned int pipe);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 3b5f893..797337c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1027,7 +1027,7 @@ static void amdgpu_switcheroo_set_state(struct pci_dev *pdev, enum vga_switchero
 		/* don't suspend or resume card normally */
 		dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 
-		amdgpu_device_resume(dev, true, true);
+		amdgpu_device_resume(dev, true, true, false);
 
 		dev->pdev->d3_delay = d3_delay;
 
@@ -1037,7 +1037,7 @@ static void amdgpu_switcheroo_set_state(struct pci_dev *pdev, enum vga_switchero
 		printk(KERN_INFO "amdgpu: switched off\n");
 		drm_kms_helper_poll_disable(dev);
 		dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
-		amdgpu_device_suspend(dev, true, true);
+		amdgpu_device_suspend(dev, true, true, false);
 		dev->switch_power_state = DRM_SWITCH_POWER_OFF;
 	}
 }
@@ -1785,7 +1785,8 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
  * Returns 0 for success or an error on failure.
  * Called at driver suspend.
  */
-int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon)
+int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon,
+			  bool asic_reset)
 {
 	struct amdgpu_device *adev;
 	struct drm_crtc *crtc;
@@ -1849,6 +1850,8 @@ int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon)
 	amdgpu_bo_evict_vram(adev);
 
 	pci_save_state(dev->pdev);
+	if (asic_reset)
+		r = amdgpu_asic_reset(adev);
 	if (suspend) {
 		/* Shut down the device */
 		pci_disable_device(dev->pdev);
@@ -1872,7 +1875,8 @@ int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon)
  * Returns 0 for success or an error on failure.
  * Called at driver resume.
  */
-int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon)
+int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon,
+			 bool asic_init)
 {
 	struct drm_connector *connector;
 	struct amdgpu_device *adev = dev->dev_private;
@@ -1896,7 +1900,7 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon)
 	}
 
 	/* post card */
-	if (!amdgpu_card_posted(adev))
+	if (!amdgpu_card_posted(adev) || asic_init)
 		amdgpu_atom_asic_init(adev->mode_info.atom_context);
 
 	r = amdgpu_resume(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 81466ec..d0f65d4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -409,28 +409,28 @@ static int amdgpu_pmops_suspend(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct drm_device *drm_dev = pci_get_drvdata(pdev);
-	return amdgpu_device_suspend(drm_dev, true, true);
+	return amdgpu_device_suspend(drm_dev, true, true, false);
 }
 
 static int amdgpu_pmops_resume(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct drm_device *drm_dev = pci_get_drvdata(pdev);
-	return amdgpu_device_resume(drm_dev, true, true);
+	return amdgpu_device_resume(drm_dev, true, true, false);
 }
 
 static int amdgpu_pmops_freeze(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct drm_device *drm_dev = pci_get_drvdata(pdev);
-	return amdgpu_device_suspend(drm_dev, false, true);
+	return amdgpu_device_suspend(drm_dev, false, true, false);
 }
 
 static int amdgpu_pmops_thaw(struct device *dev)
 {
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct drm_device *drm_dev = pci_get_drvdata(pdev);
-	return amdgpu_device_resume(drm_dev, false, true);
+	return amdgpu_device_resume(drm_dev, false, true, false);
 }
 
 static int amdgpu_pmops_runtime_suspend(struct device *dev)
@@ -448,7 +448,7 @@ static int amdgpu_pmops_runtime_suspend(struct device *dev)
 	drm_kms_helper_poll_disable(drm_dev);
 	vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_OFF);
 
-	ret = amdgpu_device_suspend(drm_dev, false, false);
+	ret = amdgpu_device_suspend(drm_dev, false, false, false);
 	pci_save_state(pdev);
 	pci_disable_device(pdev);
 	pci_ignore_hotplug(pdev);
@@ -481,7 +481,7 @@ static int amdgpu_pmops_runtime_resume(struct device *dev)
 		return ret;
 	pci_set_master(pdev);
 
-	ret = amdgpu_device_resume(drm_dev, false, false);
+	ret = amdgpu_device_resume(drm_dev, false, false, false);
 	drm_kms_helper_poll_enable(drm_dev);
 	vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_ON);
 	drm_dev->switch_power_state = DRM_SWITCH_POWER_ON;
-- 
2.5.5