Based on grepping through the source code this driver appears to be
missing a call to drm_atomic_helper_shutdown() (or
drm_helper_force_disable_all() if not using atomic) at system shutdown
time. Among other things, this means that if a panel is in use that it
won't be cleanly powered off at system shutdown time.
The fact that we should call drm_atomic_helper_shutdown() in the case
of OS shutdown/restart comes straight out of the kernel doc "driver
instance overview" in drm_drv.c.
Suggested-by: Maxime Ripard <mripard@xxxxxxxxxx>
Reviewed-by: Maxime Ripard <mripard@xxxxxxxxxx>
Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---
This commit is only compile-time tested. I made my best guess about
how to fit this into the existing code. If someone wishes a different
style, please yell.
(no changes since v1)
drivers/gpu/drm/nouveau/nouveau_display.c | 9 +++++++++
drivers/gpu/drm/nouveau/nouveau_display.h | 1 +
drivers/gpu/drm/nouveau/nouveau_drm.c | 13 +++++++++++++
drivers/gpu/drm/nouveau/nouveau_drv.h | 1 +
drivers/gpu/drm/nouveau/nouveau_platform.c | 6 ++++++
5 files changed, 30 insertions(+)
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index d4725a968827..15da55c382f1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -645,6 +645,15 @@ nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime)
disp->fini(dev, runtime, suspend);
}
+void
+nouveau_display_shutdown(struct drm_device *dev)
+{
+ if (drm_drv_uses_atomic_modeset(dev))
+ drm_atomic_helper_shutdown(dev);
+ else
+ drm_helper_force_disable_all(dev);
+}
+
static void
nouveau_display_create_properties(struct drm_device *dev)
{
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.h b/drivers/gpu/drm/nouveau/nouveau_display.h
index 2ab2ddb1eadf..9df62e833cda 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.h
+++ b/drivers/gpu/drm/nouveau/nouveau_display.h
@@ -47,6 +47,7 @@ void nouveau_display_destroy(struct drm_device *dev);
int nouveau_display_init(struct drm_device *dev, bool resume, bool runtime);
void nouveau_display_hpd_resume(struct drm_device *dev);
void nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime);
+void nouveau_display_shutdown(struct drm_device *dev);
int nouveau_display_suspend(struct drm_device *dev, bool runtime);
void nouveau_display_resume(struct drm_device *dev, bool runtime);
int nouveau_display_vblank_enable(struct drm_crtc *crtc);
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index a947e1d5f309..b41154c9b9cc 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -894,6 +894,18 @@ nouveau_drm_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
}
+void
+nouveau_drm_device_shutdown(struct drm_device *dev)
+{
+ nouveau_display_shutdown(dev);
+}
+
+static void
+nouveau_drm_shutdown(struct pci_dev *pdev)
+{
+ nouveau_drm_device_shutdown(pci_get_drvdata(pdev));
+}
+
static int
nouveau_do_suspend(struct drm_device *dev, bool runtime)
{
@@ -1361,6 +1373,7 @@ nouveau_drm_pci_driver = {
.id_table = nouveau_drm_pci_table,
.probe = nouveau_drm_probe,
.remove = nouveau_drm_remove,
+ .shutdown = nouveau_drm_shutdown,
.driver.pm = &nouveau_pm_ops,
};
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 25fca98a20bc..78a91686006b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -327,6 +327,7 @@ struct drm_device *
nouveau_platform_device_create(const struct nvkm_device_tegra_func *,
struct platform_device *, struct nvkm_device **);
void nouveau_drm_device_remove(struct drm_device *dev);
+void nouveau_drm_device_shutdown(struct drm_device *dev);
#define NV_PRINTK(l,c,f,a...) do { \
struct nouveau_cli *_cli = (c); \
diff --git a/drivers/gpu/drm/nouveau/nouveau_platform.c b/drivers/gpu/drm/nouveau/nouveau_platform.c
index bf2dc7567ea4..511f3a0c6ee9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_platform.c
+++ b/drivers/gpu/drm/nouveau/nouveau_platform.c
@@ -49,6 +49,11 @@ static void nouveau_platform_remove(struct platform_device *pdev)
nouveau_drm_device_remove(dev);
}
+static void nouveau_platform_shutdown(struct platform_device *pdev)
+{
+ nouveau_drm_device_shutdown(platform_get_drvdata(pdev));
+}
+
#if IS_ENABLED(CONFIG_OF)
static const struct nvkm_device_tegra_func gk20a_platform_data = {
.iommu_bit = 34,
@@ -93,4 +98,5 @@ struct platform_driver nouveau_platform_driver = {
},
.probe = nouveau_platform_probe,
.remove_new = nouveau_platform_remove,
+ .shutdown = nouveau_platform_shutdown,
};
--
2.45.2.505.gda0bf45e8d-goog
