On Tue, Sep 19, 2023 at 6:24 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@xxxxxxxxxxxxx> wrote:
>
> 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 }
I see it now. I guess it's time to call it a day... I even replied with
the wrong email ...
Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
> > 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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>
>
