From: Ludovic Desroches <ludovic.desroches@microchip.com>
To: Manikandan Muralidharan <manikandan.m@microchip.com>,
"Dharma Balasubiramani" <dharma.b@microchip.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Claudiu Beznea <claudiu.beznea@tuxon.dev>
Cc: <dri-devel@lists.freedesktop.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Ludovic Desroches <ludovic.desroches@microchip.com>
Subject: [PATCH 2/8] drm/atmel-hlcdc: add support for the nomodeset kernel parameter
Date: Fri, 21 Nov 2025 16:04:34 +0100 [thread overview]
Message-ID: <20251121-lcd_cleanup_mainline-v1-2-2587e6fe4d67@microchip.com> (raw)
In-Reply-To: <20251121-lcd_cleanup_mainline-v1-0-2587e6fe4d67@microchip.com>
According to Documentation/admin-guide/kernel-parameters.txt, this
parameter can be used to disable kernel modesetting.
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Reviewed-by: Dharma Balasubiramani <dharma.b@microchip.com>
Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com>
---
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index 8ed029381c555db10d596efc8d52753c47767633..8ff582a394794aacf84f9e23fd59f123445926a3 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -858,6 +858,9 @@ static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev)
struct drm_device *ddev;
int ret;
+ if (drm_firmware_drivers_only())
+ return -ENODEV;
+
dc = devm_drm_dev_alloc(&pdev->dev, &atmel_hlcdc_dc_driver, struct atmel_hlcdc_dc, dev);
if (IS_ERR(dc))
return PTR_ERR(dc);
--
2.51.0
next prev parent reply other threads:[~2025-11-21 15:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-21 15:04 [PATCH 0/8] drm/atmel-hlcdc: make more use of helpers Ludovic Desroches
2025-11-21 15:04 ` [PATCH 1/8] drm/atmel-hlcdc: use managed device resources for the display controller Ludovic Desroches
2025-11-21 15:04 ` Ludovic Desroches [this message]
2025-11-21 15:04 ` [PATCH 3/8] drm/atmel-hlcdc: use drmm_simple_encoder_alloc() Ludovic Desroches
2025-11-21 15:04 ` [PATCH 4/8] drm/atmel-hlcdc: use drm_crtc_mask() Ludovic Desroches
2025-11-21 15:04 ` [PATCH 5/8] drm/atmel-hlcdc: use devm_drm_of_get_bridge() Ludovic Desroches
2025-11-22 18:40 ` kernel test robot
2025-11-21 15:04 ` [PATCH 6/8] drm/atmel-hlcdc: use drmm_crtc_alloc_with_planes() Ludovic Desroches
2025-11-21 15:04 ` [PATCH 7/8] drm/atmel-hlcdc: use drmm_universal_plane_alloc() Ludovic Desroches
2025-11-21 15:04 ` [PATCH 8/8] drm/atmel-hlcdc: destroy properly the plane state in the reset callback Ludovic Desroches
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