Il 19/09/23 12:21, Chen-Yu Tsai ha scritto:
On Tue, Sep 19, 2023 at 6:00 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@xxxxxxxxxxxxx> wrote:
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.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
.../media/platform/mediatek/mdp3/mtk-mdp3-core.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
index 8677e7fd5083..d93d3833633e 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
@@ -254,13 +254,17 @@ static int mdp_probe(struct platform_device *pdev)
goto err_destroy_job_wq;
}
- mm_pdev = __get_pdev_by_id(pdev, NULL, 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, NULL, 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);
You need to keep the original code as a fallback for old device trees.
I haven't removed the original code, it *is* there as a fallback :-)
mdp->scp = scp_get() <--- new
if (!mdp->scp) { fallback }
Regards,
Angelo
ChenYu
}
- 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);
--
2.42.0
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