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Tue, 12 Sep 2023 15:58:07 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Tue, 12 Sep 2023 15:58:07 +0800 From: Moudy Ho To: Chun-Kuang Hu , Philipp Zabel , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Mauro Carvalho Chehab , Matthias Brugger , Hans Verkuil CC: AngeloGioacchino Del Regno , , , , , , , "Moudy Ho" Subject: [PATCH v5 08/14] media: platform: mtk-mdp3: avoid multiple driver registrations Date: Tue, 12 Sep 2023 15:57:59 +0800 Message-ID: <20230912075805.11432-9-moudy.ho@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230912075805.11432-1-moudy.ho@mediatek.com> References: <20230912075805.11432-1-moudy.ho@mediatek.com> MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--7.861000-8.000000 X-TMASE-MatchedRID: t43B5J96WnkBCIpkUn74FLg7LINv5AfgLL6mJOIs/vYs/uUAk6xP7PlY oV6p/cSxARdN2JeGGT9JYgJHd90gXxElELPcdUQnGVyS87Wb4lzEoDEGChh7CU1KG1YrOQW/vYS gGqfGrUjftLFtxOSbQ4Ay6p60ZV62fJ5/bZ6npdjKayT/BQTiGsxWxQI7PtA5XSCZzMZeoii5jf clWSk2ytPCZ+p6duiIqPG8weO90G0= X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--7.861000-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 4ED9F94F69DF90427B6D9211F70D41B3F83357F682DB26E0356534A3810D87E42000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230912_005815_734737_9C30DD9C X-CRM114-Status: GOOD ( 15.04 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org The amount of MDP3 driver probes is determined by the registered clocks of MMSYS. Since MT8195 MDP3 utilizes VPPSYS0 and VPPSYS1, it's necessary to prevent multiple driver registrations. Signed-off-by: Moudy Ho --- drivers/media/platform/mediatek/mdp3/mdp_cfg_data.c | 1 + drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c | 8 ++++++++ drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h | 1 + 3 files changed, 10 insertions(+) diff --git a/drivers/media/platform/mediatek/mdp3/mdp_cfg_data.c b/drivers/media/platform/mediatek/mdp3/mdp_cfg_data.c index b7efdafb1620..8eac09f9d3dd 100644 --- a/drivers/media/platform/mediatek/mdp3/mdp_cfg_data.c +++ b/drivers/media/platform/mediatek/mdp3/mdp_cfg_data.c @@ -410,6 +410,7 @@ static const struct mdp_pipe_info mt8183_pipe_info[] = { const struct mtk_mdp_driver_data mt8183_mdp_driver_data = { .mdp_plat_id = MT8183, + .mdp_con_res = 0x14001000, .mdp_probe_infra = mt8183_mdp_probe_infra, .mdp_cfg = &mt8183_plat_cfg, .mdp_mutex_table_idx = mt8183_mutex_idx, diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c index 239f496b7a30..06b7d2b0b814 100644 --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c @@ -161,6 +161,7 @@ static int mdp_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct mdp_dev *mdp; struct platform_device *mm_pdev, *mm2_pdev; + struct resource *res; int ret, i, mutex_id; mdp = kzalloc(sizeof(*mdp), GFP_KERNEL); @@ -172,6 +173,12 @@ static int mdp_probe(struct platform_device *pdev) mdp->pdev = pdev; mdp->mdp_data = of_device_get_match_data(&pdev->dev); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (res->start != mdp->mdp_data->mdp_con_res) { + 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; @@ -279,6 +286,7 @@ 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 e4ffa25b9271..a063a655248c 100644 --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h @@ -61,6 +61,7 @@ enum mdp_pipe_id { struct mtk_mdp_driver_data { const int mdp_plat_id; + const resource_size_t mdp_con_res; const struct of_device_id *mdp_probe_infra; const struct mdp_platform_config *mdp_cfg; const u32 *mdp_mutex_table_idx;