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/panel/panel-ilitek-ili9341.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c index 2c3378a259b1..707c5a7bf256 100644 --- a/drivers/gpu/drm/panel/panel-ilitek-ili9341.c +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9341.c @@ -611,6 +611,9 @@ static int ili9341_dbi_probe(struct spi_device *spi, struct gpio_desc *dc, u32 rotation = 0; int ret;
+ if (drm_firmware_drivers_only()) + return -ENODEV; + vcc = devm_regulator_get_optional(dev, "vcc"); if (IS_ERR(vcc)) dev_err(dev, "get optional vcc failed\n");