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/st7586.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/tiny/st7586.c b/drivers/gpu/drm/tiny/st7586.c index 51b9b9fb3ead..55bf695861c7 100644 --- a/drivers/gpu/drm/tiny/st7586.c +++ b/drivers/gpu/drm/tiny/st7586.c @@ -305,6 +305,9 @@ static int st7586_probe(struct spi_device *spi) size_t bufsize; int ret;
+ if (drm_firmware_drivers_only()) + return -ENODEV; + dbidev = devm_drm_dev_alloc(dev, &st7586_driver, struct mipi_dbi_dev, drm); if (IS_ERR(dbidev))