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Subject[PATCH 09/60] drm/fsl-dcu: Add support for the nomodeset kernel parameter
Date
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/fsl-dcu/fsl_dcu_drm_drv.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 660fe573db96..9b9e1b200005 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -255,6 +255,9 @@ static int fsl_dcu_drm_probe(struct platform_device *pdev)
int ret;
u8 div_ratio_shift = 0;

+ if (drm_firmware_drivers_only())
+ return -ENODEV;
+
fsl_dev = devm_kzalloc(dev, sizeof(*fsl_dev), GFP_KERNEL);
if (!fsl_dev)
return -ENOMEM;
--
2.33.1
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