We are seeing root ports on some desktop boards support D3cold for discrete graphics card. So when efifb is in use while graphics device isn't bound to a driver, PCI and ACPI will put the graphics to D3cold when runtime suspend kicks in, makes efifb stop working.
So ensure the graphics device won't be runtime suspended, to keep efifb work all the time.
Signed-off-by: Kai-Heng Feng kai.heng.feng@canonical.com --- drivers/video/fbdev/efifb.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c index e57c00824965..19edd7206409 100644 --- a/drivers/video/fbdev/efifb.c +++ b/drivers/video/fbdev/efifb.c @@ -16,6 +16,7 @@ #include <linux/platform_device.h> #include <linux/printk.h> #include <linux/screen_info.h> +#include <linux/pm_runtime.h> #include <video/vga.h> #include <asm/efi.h> #include <drm/drm_utils.h> /* For drm_get_panel_orientation_quirk */ @@ -575,6 +576,7 @@ static int efifb_probe(struct platform_device *dev) goto err_fb_dealoc; } fb_info(info, "%s frame buffer device\n", info->fix.id); + pm_runtime_get_sync(&efifb_pci_dev->dev); return 0;
err_fb_dealoc: @@ -601,6 +603,7 @@ static int efifb_remove(struct platform_device *pdev) unregister_framebuffer(info); sysfs_remove_groups(&pdev->dev.kobj, efifb_groups); framebuffer_release(info); + pm_runtime_put(&efifb_pci_dev->dev);
return 0; }
On Sat, Jan 30, 2021 at 6:27 AM Kai-Heng Feng kai.heng.feng@canonical.com wrote:
We are seeing root ports on some desktop boards support D3cold for discrete graphics card. So when efifb is in use while graphics device isn't bound to a driver, PCI and ACPI will put the graphics to D3cold when runtime suspend kicks in, makes efifb stop working.
So ensure the graphics device won't be runtime suspended, to keep efifb work all the time.
Signed-off-by: Kai-Heng Feng kai.heng.feng@canonical.com
Reviewed-by: Alex Deucher alexander.deucher@amd.com
drivers/video/fbdev/efifb.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c index e57c00824965..19edd7206409 100644 --- a/drivers/video/fbdev/efifb.c +++ b/drivers/video/fbdev/efifb.c @@ -16,6 +16,7 @@ #include <linux/platform_device.h> #include <linux/printk.h> #include <linux/screen_info.h> +#include <linux/pm_runtime.h> #include <video/vga.h> #include <asm/efi.h> #include <drm/drm_utils.h> /* For drm_get_panel_orientation_quirk */ @@ -575,6 +576,7 @@ static int efifb_probe(struct platform_device *dev) goto err_fb_dealoc; } fb_info(info, "%s frame buffer device\n", info->fix.id);
pm_runtime_get_sync(&efifb_pci_dev->dev); return 0;err_fb_dealoc: @@ -601,6 +603,7 @@ static int efifb_remove(struct platform_device *pdev) unregister_framebuffer(info); sysfs_remove_groups(&pdev->dev.kobj, efifb_groups); framebuffer_release(info);
pm_runtime_put(&efifb_pci_dev->dev); return 0;}
2.29.2
dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
On Mon, Feb 1, 2021 at 11:21 PM Alex Deucher alexdeucher@gmail.com wrote:
On Sat, Jan 30, 2021 at 6:27 AM Kai-Heng Feng kai.heng.feng@canonical.com wrote:
We are seeing root ports on some desktop boards support D3cold for discrete graphics card. So when efifb is in use while graphics device isn't bound to a driver, PCI and ACPI will put the graphics to D3cold when runtime suspend kicks in, makes efifb stop working.
So ensure the graphics device won't be runtime suspended, to keep efifb work all the time.
Signed-off-by: Kai-Heng Feng kai.heng.feng@canonical.com
Reviewed-by: Alex Deucher alexander.deucher@amd.com
A gentle ping...
drivers/video/fbdev/efifb.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c index e57c00824965..19edd7206409 100644 --- a/drivers/video/fbdev/efifb.c +++ b/drivers/video/fbdev/efifb.c @@ -16,6 +16,7 @@ #include <linux/platform_device.h> #include <linux/printk.h> #include <linux/screen_info.h> +#include <linux/pm_runtime.h> #include <video/vga.h> #include <asm/efi.h> #include <drm/drm_utils.h> /* For drm_get_panel_orientation_quirk */ @@ -575,6 +576,7 @@ static int efifb_probe(struct platform_device *dev) goto err_fb_dealoc; } fb_info(info, "%s frame buffer device\n", info->fix.id);
pm_runtime_get_sync(&efifb_pci_dev->dev); return 0;err_fb_dealoc: @@ -601,6 +603,7 @@ static int efifb_remove(struct platform_device *pdev) unregister_framebuffer(info); sysfs_remove_groups(&pdev->dev.kobj, efifb_groups); framebuffer_release(info);
pm_runtime_put(&efifb_pci_dev->dev); return 0;}
2.29.2
dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Hi
Am 22.02.21 um 08:08 schrieb Kai-Heng Feng:
On Mon, Feb 1, 2021 at 11:21 PM Alex Deucher alexdeucher@gmail.com wrote:
On Sat, Jan 30, 2021 at 6:27 AM Kai-Heng Feng kai.heng.feng@canonical.com wrote:
We are seeing root ports on some desktop boards support D3cold for discrete graphics card. So when efifb is in use while graphics device isn't bound to a driver, PCI and ACPI will put the graphics to D3cold when runtime suspend kicks in, makes efifb stop working.
So ensure the graphics device won't be runtime suspended, to keep efifb work all the time.
Signed-off-by: Kai-Heng Feng kai.heng.feng@canonical.com
Reviewed-by: Alex Deucher alexander.deucher@amd.com
A gentle ping...
Thanks for your patch. I've added it to drm-misc-next.
Best regards Thomas
drivers/video/fbdev/efifb.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c index e57c00824965..19edd7206409 100644 --- a/drivers/video/fbdev/efifb.c +++ b/drivers/video/fbdev/efifb.c @@ -16,6 +16,7 @@ #include <linux/platform_device.h> #include <linux/printk.h> #include <linux/screen_info.h> +#include <linux/pm_runtime.h> #include <video/vga.h> #include <asm/efi.h> #include <drm/drm_utils.h> /* For drm_get_panel_orientation_quirk */ @@ -575,6 +576,7 @@ static int efifb_probe(struct platform_device *dev) goto err_fb_dealoc; } fb_info(info, "%s frame buffer device\n", info->fix.id);
pm_runtime_get_sync(&efifb_pci_dev->dev); return 0;err_fb_dealoc:
@@ -601,6 +603,7 @@ static int efifb_remove(struct platform_device *pdev) unregister_framebuffer(info); sysfs_remove_groups(&pdev->dev.kobj, efifb_groups); framebuffer_release(info);
pm_runtime_put(&efifb_pci_dev->dev); return 0;}
-- 2.29.2
dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
dri-devel@lists.freedesktop.org
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Alex Deucher -
Kai-Heng Feng -
Thomas Zimmermann