[PATCH 37/42] soc: mediatek: mtk-mmsys: Populate multimedia subsystem subdevices

[AngeloGioacchino Del Regno]

The multimedia hardware subsystem contains all of the multimedia
related sub-devices, and that really is by hardware design, not
anything software related.

In order to allow specifying a correct description of the hardware
in devicetrees, add support for probing subdevices of multimedia
controllers, specified as subnodes.

Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
---
 drivers/soc/mediatek/mtk-mmsys.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index 24296ebcbae3..37f7c888e7e2 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -498,6 +498,13 @@ static int mtk_mmsys_probe(struct platform_device *pdev)
 		return PTR_ERR(clks);
 	mmsys->clks_pdev = clks;
 
+	ret = devm_of_platform_populate(dev);
+	if (ret) {
+		dev_err(dev, "Failed to populate child devices: %d\n", ret);
+		platform_device_unregister(clks);
+		return ret;
+	}
+
 	if (mmsys->data->is_vppsys)
 		goto out_probe_done;
 
@@ -543,6 +550,11 @@ static const struct of_device_id of_match_mtk_mmsys[] = {
 	{ .compatible = "mediatek,mt8195-vdosys1", .data = &mt8195_vdosys1_driver_data },
 	{ .compatible = "mediatek,mt8195-vppsys0", .data = &mt8195_vppsys0_driver_data },
 	{ .compatible = "mediatek,mt8195-vppsys1", .data = &mt8195_vppsys1_driver_data },
+	{ .compatible = "mediatek,mt8196-dispsys0", .data = &mt8196_dispsys0_driver_data },
+	{ .compatible = "mediatek,mt8196-dispsys1", .data = &mt8196_dispsys1_driver_data },
+	{ .compatible = "mediatek,mt8196-ovlsys0", .data = &mt8196_ovlsys0_driver_data },
+	{ .compatible = "mediatek,mt8196-ovlsys1", .data = &mt8196_ovlsys1_driver_data },
+	{ .compatible = "mediatek,mt8196-vdisp-ao", .data = &mt8196_vdisp_ao_driver_data },
 	{ .compatible = "mediatek,mt8365-mmsys", .data = &mt8365_mmsys_driver_data },
 	{ /* sentinel */ }
 };
-- 
2.54.0