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@xxxxxxxxxx>
Acked-by: Jyri Sarha <jyri.sarha@xxxxxx>
---
(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);
