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media: raspberrypi: cfe: Fix mapping of dmabuf buffers

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When using buffers from DRM, DMA-API gives a warning about: "mapping sg
segment longer than device claims to support [len=307200] [max=65536]"

Add a call to vb2_dma_contig_set_max_seg_size() to tell the DMA-API
about the supported segment size (which is UINT_MAX).

Fixes: 6edb685abb ("media: raspberrypi: Add support for RP1-CFE")
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
This commit is contained in:
Tomi Valkeinen 2024-11-04 09:47:54 +02:00 committed by Hans Verkuil
parent 1429826883
commit be7de82384
1 changed files with 4 additions and 0 deletions
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4
drivers/media/platform/raspberrypi/rp1-cfe/cfe.c
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@ -2340,6 +2340,10 @@ static int cfe_probe(struct platform_device *pdev)
goto err_cfe_put;
}
ret = vb2_dma_contig_set_max_seg_size(&pdev->dev, UINT_MAX);
if (ret)
goto err_cfe_put;
/* TODO: Enable clock only when running. */
cfe->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(cfe->clk)) {