| Message ID | 20211217003752.3946210-37-javierm@redhat.com (mailing list archive) |
|---|---|
| State | Mainlined, archived |
| Headers | show |
| Series | drm: Make drivers to honour the nomodeset parameter | expand |
On 2021-12-17 2:37, Javier Martinez Canillas wrote: > According to disable Documentation/admin-guide/kernel-parameters.txt, > this > parameter can be used to disable kernel modesetting. > > DRM drivers will not perform display-mode changes or accelerated > rendering > and only the system framebuffer will be available if it was set-up. > > But only a few DRM drivers currently check for nomodeset, make this > driver > to also support the command line parameter. > > Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Jyri Sarha <jyri.sarha@iki.fi> > --- > > (no changes since v1) > > drivers/gpu/drm/tilcdc/tilcdc_drv.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c > b/drivers/gpu/drm/tilcdc/tilcdc_drv.c > index cc567c87057d..eee3c447fbac 100644 > --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c > +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c > @@ -604,6 +604,9 @@ static struct platform_driver > tilcdc_platform_driver = { > > static int __init tilcdc_drm_init(void) > { > + if (drm_firmware_drivers_only()) > + return -ENODEV; > + > DBG("init"); > tilcdc_panel_init(); > return platform_driver_register(&tilcdc_platform_driver);
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c index cc567c87057d..eee3c447fbac 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -604,6 +604,9 @@ static struct platform_driver tilcdc_platform_driver = { static int __init tilcdc_drm_init(void) { + if (drm_firmware_drivers_only()) + return -ENODEV; + DBG("init"); tilcdc_panel_init(); return platform_driver_register(&tilcdc_platform_driver);
According to disable Documentation/admin-guide/kernel-parameters.txt, this parameter can be used to disable kernel modesetting. DRM drivers will not perform display-mode changes or accelerated rendering and only the system framebuffer will be available if it was set-up. But only a few DRM drivers currently check for nomodeset, make this driver to also support the command line parameter. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> --- (no changes since v1) drivers/gpu/drm/tilcdc/tilcdc_drv.c | 3 +++ 1 file changed, 3 insertions(+)