[PATCH v4 10/12] drm/radeon: Suspend and resume clients with client helpers

[Thomas Zimmermann <tzimmermann@xxxxxxx>]

Replace calls to radeon_fbdev_set_suspend() with calls to the client
functions drm_client_dev_suspend() and drm_client_dev_resume(). Any
registered in-kernel client will now receive suspend and resume events.

v4:
- refer to radeon_fbdev_set_suspend() in commit description (Jonathan)

Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: "Christian König" <christian.koenig@xxxxxxx>
Cc: Xinhui Pan <Xinhui.Pan@xxxxxxx>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@xxxxxxxxx>
---
 drivers/gpu/drm/radeon/radeon_device.c | 19 ++++++++++---------
 drivers/gpu/drm/radeon/radeon_fbdev.c  |  6 ------
 drivers/gpu/drm/radeon/radeon_mode.h   |  3 ---
 3 files changed, 10 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 554b236c2328..6f071e61f764 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -35,6 +35,7 @@
 #include <linux/vgaarb.h>
 
 #include <drm/drm_cache.h>
+#include <drm/drm_client_event.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_device.h>
 #include <drm/drm_file.h>
@@ -1542,7 +1543,7 @@ void radeon_device_fini(struct radeon_device *rdev)
  * Called at driver suspend.
  */
 int radeon_suspend_kms(struct drm_device *dev, bool suspend,
-		       bool fbcon, bool freeze)
+		       bool notify_clients, bool freeze)
 {
 	struct radeon_device *rdev;
 	struct pci_dev *pdev;
@@ -1634,9 +1635,9 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend,
 		pci_set_power_state(pdev, PCI_D3hot);
 	}
 
-	if (fbcon) {
+	if (notify_clients) {
 		console_lock();
-		radeon_fbdev_set_suspend(rdev, 1);
+		drm_client_dev_suspend(dev, true);
 		console_unlock();
 	}
 	return 0;
@@ -1649,7 +1650,7 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend,
  * Returns 0 for success or an error on failure.
  * Called at driver resume.
  */
-int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
+int radeon_resume_kms(struct drm_device *dev, bool resume, bool notify_clients)
 {
 	struct drm_connector *connector;
 	struct radeon_device *rdev = dev->dev_private;
@@ -1660,14 +1661,14 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
 	if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 		return 0;
 
-	if (fbcon) {
+	if (notify_clients) {
 		console_lock();
 	}
 	if (resume) {
 		pci_set_power_state(pdev, PCI_D0);
 		pci_restore_state(pdev);
 		if (pci_enable_device(pdev)) {
-			if (fbcon)
+			if (notify_clients)
 				console_unlock();
 			return -1;
 		}
@@ -1730,7 +1731,7 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
 	/* reset hpd state */
 	radeon_hpd_init(rdev);
 	/* blat the mode back in */
-	if (fbcon) {
+	if (notify_clients) {
 		drm_helper_resume_force_mode(dev);
 		/* turn on display hw */
 		drm_modeset_lock_all(dev);
@@ -1746,8 +1747,8 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
 	if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
 		radeon_pm_compute_clocks(rdev);
 
-	if (fbcon) {
-		radeon_fbdev_set_suspend(rdev, 0);
+	if (notify_clients) {
+		drm_client_dev_resume(dev, true);
 		console_unlock();
 	}
 
diff --git a/drivers/gpu/drm/radeon/radeon_fbdev.c b/drivers/gpu/drm/radeon/radeon_fbdev.c
index 0aa20c8df546..d4a58bd679db 100644
--- a/drivers/gpu/drm/radeon/radeon_fbdev.c
+++ b/drivers/gpu/drm/radeon/radeon_fbdev.c
@@ -288,12 +288,6 @@ int radeon_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper,
 	return ret;
 }
 
-void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
-{
-	if (rdev_to_drm(rdev)->fb_helper)
-		drm_fb_helper_set_suspend(rdev_to_drm(rdev)->fb_helper, state);
-}
-
 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
 {
 	struct drm_fb_helper *fb_helper = rdev_to_drm(rdev)->fb_helper;
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 12a1d99a1815..4063d3801e81 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -942,13 +942,10 @@ int radeon_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper,
 				    struct drm_fb_helper_surface_size *sizes);
 #define RADEON_FBDEV_DRIVER_OPS \
 	.fbdev_probe = radeon_fbdev_driver_fbdev_probe
-void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state);
 bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj);
 #else
 #define RADEON_FBDEV_DRIVER_OPS \
 	.fbdev_probe = NULL
-static inline void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
-{ }
 static inline bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
 {
 	return false;
-- 
2.46.0