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| author | Javier Martinez Canillas <javierm@redhat.com> | 2021-12-17 01:37:43 +0100 |
|---|---|---|
| committer | Javier Martinez Canillas <javierm@redhat.com> | 2022-01-27 19:15:49 +0100 |
| commit | c0a23916f4ae880d0265e19255997825b374baf0 (patch) | |
| tree | 65774b075604e8158854460fff9124691028376e /drivers/gpu/drm/mediatek/mtk_drm_drv.c | |
| parent | ab120b9264f9519d8aa255534cc4c0d11ac959a7 (diff) | |
| download | linux-c0a23916f4ae880d0265e19255997825b374baf0.tar.bz2 | |
drm/mediatek: 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 <javierm@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211217003752.3946210-29-javierm@redhat.com
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_drv.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index aec39724ebeb..e336358fee20 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -210,6 +210,9 @@ static int mtk_drm_kms_init(struct drm_device *drm) struct device *dma_dev; int ret; + if (drm_firmware_drivers_only()) + return -ENODEV; + if (!iommu_present(&platform_bus_type)) return -EPROBE_DEFER; |