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@kernel.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
---
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 d8c92521226d..05c3688ccb76 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -642,6 +642,15 @@ 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 50589f982d1a..8ecfd66b7aab 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -879,6 +879,18 @@ 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)
{
@@ -1346,6 +1358,7 @@ 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 3666a7403e47..aa936cabb6cf 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 23cd43a7fd19..b2e82a96411c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_platform.c
+++ b/drivers/gpu/drm/nouveau/nouveau_platform.c
@@ -50,6 +50,11 @@ static int nouveau_platform_remove(struct platform_device *pdev)
return 0;
}
+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,
@@ -94,4 +99,5 @@ struct platform_driver nouveau_platform_driver = {
},
.probe = nouveau_platform_probe,
.remove = nouveau_platform_remove,
+ .shutdown = nouveau_platform_shutdown,
};
--
2.42.0.515.g380fc7ccd1-googactually very glad to see this because I think I've seen one bug in the wild
as a result of things not getting shut down :)
Reviewed-by: Lyude Paul <lyude@redhat.com>
Tested-by: Lyude Paul <lyude@redhat.com>
On Thu, 2023-09-21 at 12:26 -0700, Douglas Anderson wrote:
> 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@kernel.org>
> Reviewed-by: Maxime Ripard <mripard@kernel.org>
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
> ---
> 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 d8c92521226d..05c3688ccb76 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_display.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_display.c
> @@ -642,6 +642,15 @@ 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 50589f982d1a..8ecfd66b7aab 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_drm.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
> @@ -879,6 +879,18 @@ 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)
> {
> @@ -1346,6 +1358,7 @@ 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 3666a7403e47..aa936cabb6cf 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 23cd43a7fd19..b2e82a96411c 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_platform.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_platform.c
> @@ -50,6 +50,11 @@ static int nouveau_platform_remove(struct platform_device *pdev)
> return 0;
> }
>
> +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,
> @@ -94,4 +99,5 @@ struct platform_driver nouveau_platform_driver = {
> },
> .probe = nouveau_platform_probe,
> .remove = nouveau_platform_remove,
> + .shutdown = nouveau_platform_shutdown,
> };
--
Cheers,
Lyude Paul (she/her)
Software Engineer at Red Hat
Hi, On Fri, Sep 22, 2023 at 2:06 PM Lyude Paul <lyude@redhat.com> wrote: > > actually very glad to see this because I think I've seen one bug in the wild > as a result of things not getting shut down :) > > Reviewed-by: Lyude Paul <lyude@redhat.com> > Tested-by: Lyude Paul <lyude@redhat.com> Any idea of where / how this patch should land. Would you expect me to land it through drm-misc, or would you expect it to go through someone else's tree?
Hi, On Fri, Nov 17, 2023 at 3:00 PM Doug Anderson <dianders@chromium.org> wrote: > > Hi, > > On Fri, Sep 22, 2023 at 2:06 PM Lyude Paul <lyude@redhat.com> wrote: > > > > actually very glad to see this because I think I've seen one bug in the wild > > as a result of things not getting shut down :) > > > > Reviewed-by: Lyude Paul <lyude@redhat.com> > > Tested-by: Lyude Paul <lyude@redhat.com> > > Any idea of where / how this patch should land. Would you expect me to > land it through drm-misc, or would you expect it to go through someone > else's tree? Still hoping to find a way to land this patch, since it's been reviewed and tested. Would anyone object if I landed it via drm-misc? -Doug
On Tue, Dec 05, 2023 at 12:45:07PM -0800, Doug Anderson wrote: > Hi, > > On Fri, Nov 17, 2023 at 3:00 PM Doug Anderson <dianders@chromium.org> wrote: > > > > Hi, > > > > On Fri, Sep 22, 2023 at 2:06 PM Lyude Paul <lyude@redhat.com> wrote: > > > > > > actually very glad to see this because I think I've seen one bug in the wild > > > as a result of things not getting shut down :) > > > > > > Reviewed-by: Lyude Paul <lyude@redhat.com> > > > Tested-by: Lyude Paul <lyude@redhat.com> > > > > Any idea of where / how this patch should land. Would you expect me to > > land it through drm-misc, or would you expect it to go through someone > > else's tree? > > Still hoping to find a way to land this patch, since it's been > reviewed and tested. Would anyone object if I landed it via drm-misc? Nouveau isn't maintained in drm-misc, so I would expect it to go through the usual nouveau tree. Lyude, Karol, Danilo? Maxime
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