From 9b71ce89b55565ecce1b189e216048cd1348e36a Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 17 Dec 2021 01:37:51 +0100 Subject: [PATCH] drm/tilcdc: Add support for the nomodeset kernel parameter 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 Acked-by: Jyri Sarha Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20211217003752.3946210-37-javierm@redhat.com --- 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 cc567c8..eee3c447 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); -- 2.7.4