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media: platform: mtk-mdp3: Use devicetree phandle to retrieve SCP 

Instead of walking the entire parent node for something that has the
right compatible, use the scp_get() function provided by the MediaTek
SCP remoteproc driver to retrieve a handle to mtk_scp through the
devicetree "mediatek,scp" (phandle) property.

In case of multi-core SCP, this also allows to select a specific core.

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
AngeloGioacchino Del Regno 2023-10-05 12:49:05 +02:00 committed by Hans Verkuil
parent a60577cef7
commit 52e1fc9aa8
1 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
View File

@ -208,13 +208,17 @@ static int mdp_probe(struct platform_device *pdev)
goto err_destroy_job_wq;
}
mm_pdev = __get_pdev_by_id(pdev, MDP_INFRA_SCP);
if (WARN_ON(!mm_pdev)) {
dev_err(&pdev->dev, "Could not get scp device\n");
ret = -ENODEV;
goto err_destroy_clock_wq;
mdp->scp = scp_get(pdev);
if (!mdp->scp) {
mm_pdev = __get_pdev_by_id(pdev, MDP_INFRA_SCP);
if (WARN_ON(!mm_pdev)) {
dev_err(&pdev->dev, "Could not get scp device\n");
ret = -ENODEV;
goto err_destroy_clock_wq;
}
mdp->scp = platform_get_drvdata(mm_pdev);
}
mdp->scp = platform_get_drvdata(mm_pdev);
mdp->rproc_handle = scp_get_rproc(mdp->scp);
dev_dbg(&pdev->dev, "MDP rproc_handle: %pK", mdp->rproc_handle);