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From: Moudy Ho <moudy.ho@mediatek.com>
To: Mauro Carvalho Chehab <mchehab@kernel.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>,
	<linux-media@vger.kernel.org>,
	<linux-mediatek@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>,
	<Project_Global_Chrome_Upstream_Group@mediatek.com>,
	Moudy Ho <moudy.ho@mediatek.com>
Subject: [PATCH v3 07/13] media: platform: mtk-mdp3: avoid multiple driver registrations
Date: Fri, 13 Jan 2023 17:03:15 +0800	[thread overview]
Message-ID: <20230113090321.25128-8-moudy.ho@mediatek.com> (raw)
In-Reply-To: <20230113090321.25128-1-moudy.ho@mediatek.com>

The number of MDP3 driver probes depends on the registered clocks of MMSYS.
Because VPPSYS0 and VPPSYS1 are used in MT8195 MDP3, it is necessary to
avoid multiple driver registrations.

Signed-off-by: Moudy Ho <moudy.ho@mediatek.com>
---
 drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c | 7 ++++++-
 drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
index 56c42bd3f16b..6e3abadef6cd 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
@@ -187,6 +187,11 @@ static int mdp_probe(struct platform_device *pdev)
 	mdp->pdev = pdev;
 	mdp->mdp_data = of_device_get_match_data(&pdev->dev);
 
+	if (strcmp(dev->of_node->name, MDP_NODE_NAME)) {
+		platform_set_drvdata(pdev, mdp);
+		goto success_return;
+	}
+
 	mm_pdev = __get_pdev_by_id(pdev, NULL, MDP_INFRA_MMSYS);
 	if (IS_ERR_OR_NULL(mm_pdev)) {
 		ret = -ENODEV;
@@ -224,7 +229,6 @@ static int mdp_probe(struct platform_device *pdev)
 		p = (id && mm2_pdev) ? mm2_pdev : mm_pdev;
 		m = (id && mm2_pdev) ?
 			mdp->mdp_mutex2 : mdp->mdp_mutex;
-
 		if (m[mutex_id])
 			continue;
 		m[mutex_id] = mtk_mutex_get(&p->dev);
@@ -293,6 +297,7 @@ static int mdp_probe(struct platform_device *pdev)
 		goto err_unregister_device;
 	}
 
+success_return:
 	dev_dbg(dev, "mdp-%d registered successfully\n", pdev->id);
 	return 0;
 
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
index ce9e2b9850e6..e3e60b106c72 100644
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
@@ -14,6 +14,7 @@
 #include "mtk-mdp3-comp.h"
 #include "mtk-mdp3-vpu.h"
 
+#define MDP_NODE_NAME		"mdp3-rdma0"
 #define MDP_MODULE_NAME		"mtk-mdp3"
 #define MDP_DEVICE_NAME		"MediaTek MDP3"
 #define MDP_PHANDLE_NAME	"mediatek,mdp3"
-- 
2.18.0


  parent reply	other threads:[~2023-01-13  9:04 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-13  9:03 [PATCH v3 00/13] add support MDP3 on MT8195 platform Moudy Ho
2023-01-13  9:03 ` [PATCH v3 01/13] dt-binding: mediatek: add bindings for MediaTek mt8195 MDP3 components Moudy Ho
2023-01-13 10:23   ` Krzysztof Kozlowski
2023-01-16  2:12     ` Moudy Ho (何宗原)
2023-01-13  9:03 ` [PATCH v3 02/13] arm64: dts: mediatek: mt8195: add MDP3 nodes Moudy Ho
2023-01-13  9:03 ` [PATCH v3 03/13] media: platform: mtk-mdp3: add support second sets of MMSYS Moudy Ho
2023-01-13  9:03 ` [PATCH v3 04/13] media: platform: mtk-mdp3: add support second sets of MUTEX Moudy Ho
2023-01-13  9:03 ` [PATCH v3 05/13] media: platform: mtk-mdp3: introduce more MDP3 components Moudy Ho
2023-01-13  9:03 ` [PATCH v3 06/13] media: platform: mtk-mdp3: add checks for dummy components Moudy Ho
2023-01-13  9:03 ` Moudy Ho [this message]
2023-01-13  9:03 ` [PATCH v3 08/13] media: platform: mtk-mdp3: extend GCE event waiting in RDMA and WROT Moudy Ho
2023-01-13  9:03 ` [PATCH v3 09/13] media: platform: mtk-mdp3: add the blend of component in MUTEX MOD Moudy Ho
2023-01-13  9:03 ` [PATCH v3 10/13] media: platform: mtk-mdp3: add mt8195 platform configuration Moudy Ho
2023-01-13  9:03 ` [PATCH v3 11/13] media: platform: mtk-mdp3: add mt8195 shared memory configurations Moudy Ho
2023-01-13  9:03 ` [PATCH v3 12/13] media: platform: mtk-mdp3: add mt8195 MDP3 component settings Moudy Ho
2023-01-13  9:03 ` [PATCH v3 13/13] media: platform: mtk-mdp3: add support for parallel pipe to improve FPS Moudy Ho

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