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Wed, 05 Mar 2025 06:09:32 -0800 (PST) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: linux-amarula@amarulasolutions.com, Dario Binacchi , Michael Trimarchi , Thomas Zimmermann , David Airlie , Fabio Estevam , Maarten Lankhorst , Marek Vasut , Maxime Ripard , Pengutronix Kernel Team , Sascha Hauer , Shawn Guo , Simona Vetter , Stefan Agner , dri-devel@lists.freedesktop.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: [RESEND PATCH v3] drm/mxsfb: Remove generic DRM drivers in probe function Date: Wed, 5 Mar 2025 15:09:16 +0100 Message-ID: <20250305140929.174398-1-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Use aperture helpers to remove all generic graphics drivers before loading mxsfb. Makes mxsfb compatible with simpledrm. Co-developed-by: Michael Trimarchi Signed-off-by: Michael Trimarchi Signed-off-by: Dario Binacchi Reviewed-by: Thomas Zimmermann --- Changes in v3: - Add 'Reviewed-by' of Thomas Zimmermann Changes in v2: - Use aperture_remove_all_conflicting_devices() instead of drm_aperture_remove_framebuffers(). drivers/gpu/drm/mxsfb/mxsfb_drv.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c index 59020862cf65..e5eb644b54ae 100644 --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c @@ -8,6 +8,7 @@ * Copyright (C) 2008 Embedded Alley Solutions, Inc All Rights Reserved. */ +#include #include #include #include @@ -361,6 +362,15 @@ static int mxsfb_probe(struct platform_device *pdev) if (ret) goto err_free; + /* + * Remove early framebuffers (ie. simplefb). The framebuffer can be + * located anywhere in RAM + */ + ret = aperture_remove_all_conflicting_devices(mxsfb_driver.name); + if (ret) + return dev_err_probe(&pdev->dev, ret, + "can't kick out existing framebuffers\n"); + ret = drm_dev_register(drm, 0); if (ret) goto err_unload;