media: platform: mtk-mdp3: avoid multiple driver registrations

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 <moudy.ho@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/drivers/media/platform/mediatek/mdp3/mdp_cfg_data.c b/drivers/media/platform/mediatek/mdp3/mdp_cfg_data.c
index fe92c0474bfa740e6321e7f2139a5194df44bcec..6f77c33074ec6d1f361c495cedb5a4fef9ffb383 100644 (file)
--- 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 4802b20d7f20a78c095f5cc879b62a8ea2ae29b1..6ddb5e075f5d32625bf816b3de0c1cb3b3d0ffed 100644 (file)
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c
@@ -211,6 +211,7 @@ static int mdp_probe(struct platform_device *pdev)
        struct device *dev = &pdev->dev;
        struct mdp_dev *mdp;
        struct platform_device *mm_pdev;
+       struct resource *res;
        int ret, i, mutex_id;
 
        mdp = kzalloc(sizeof(*mdp), GFP_KERNEL);
@@ -222,6 +223,12 @@ 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;
+       }
+
        ret = mdp_mm_subsys_deploy(mdp, MDP_INFRA_MMSYS);
        if (ret)
                goto err_destroy_device;
@@ -311,6 +318,7 @@ 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 ece6509666fdb40c3dd4f58831242614780e3abe..22d1b17ef2fc1fd36bf06fab8de8636e1fc00816 100644 (file)
--- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.h
@@ -71,6 +71,7 @@ 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;