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(+)
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);