[PATCH v2] drm/mxsfb: Remove generic DRM drivers in probe function
Dario Binacchi
dario.binacchi at amarulasolutions.com
Fri Oct 25 16:14:25 UTC 2024
Use aperture helpers to remove all generic graphics drivers before
loading mxsfb. Makes mxsfb compatible with simpledrm.
Co-developed-by: Michael Trimarchi <michael at amarulasolutions.com>
Signed-off-by: Michael Trimarchi <michael at amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi at amarulasolutions.com>
---
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 cb5ce4e81fc7..d140984923fd 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 <linux/aperture.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
@@ -360,6 +361,15 @@ 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;
--
2.43.0
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