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 systewm 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 ---
drivers/gpu/drm/tiny/st7735r.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/tiny/st7735r.c b/drivers/gpu/drm/tiny/st7735r.c index fc40dd10efa8..841ec1c7bb93 100644 --- a/drivers/gpu/drm/tiny/st7735r.c +++ b/drivers/gpu/drm/tiny/st7735r.c @@ -190,6 +190,9 @@ static int st7735r_probe(struct spi_device *spi) u32 rotation = 0; int ret;
+ if (drm_firmware_drivers_only()) + return -ENODEV; + cfg = device_get_match_data(&spi->dev); if (!cfg) cfg = (void *)spi_get_device_id(spi)->driver_data;