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Subject[PATCH 55/60] drm/st7735r: 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/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;
--
2.33.1
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