diff --git a/drivers/gpu/drm/mediatek/mtk_cec.c b/drivers/gpu/drm/mediatek/mtk_cec.c
index b640bc0559e7..c3b89a5c138a 100644
--- a/drivers/gpu/drm/mediatek/mtk_cec.c
+++ b/drivers/gpu/drm/mediatek/mtk_cec.c
@@ -195,8 +195,7 @@ static int mtk_cec_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, cec);
 	spin_lock_init(&cec->lock);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	cec->regs = devm_ioremap_resource(dev, res);
+	cec->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(cec->regs)) {
 		ret = PTR_ERR(cec->regs);
 		dev_err(dev, "Failed to ioremap cec: %d\n", ret);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_aal.c b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
index 8ddf7a97e583..bd1d67a5baff 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_aal.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
@@ -104,7 +104,6 @@ static int mtk_disp_aal_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_disp_aal *priv;
-	struct resource *res;
 	int ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -117,8 +116,7 @@ static int mtk_disp_aal_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->clk);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_ioremap_resource(dev, res);
+	priv->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->regs)) {
 		dev_err(dev, "failed to ioremap aal\n");
 		return PTR_ERR(priv->regs);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
index 1773379b2439..5cee84cce0be 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
@@ -159,7 +159,6 @@ static int mtk_disp_ccorr_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_disp_ccorr *priv;
-	struct resource *res;
 	int ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -172,8 +171,7 @@ static int mtk_disp_ccorr_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->clk);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_ioremap_resource(dev, res);
+	priv->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->regs)) {
 		dev_err(dev, "failed to ioremap ccorr\n");
 		return PTR_ERR(priv->regs);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_color.c b/drivers/gpu/drm/mediatek/mtk_disp_color.c
index cac9206079e7..e3816730ab51 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_color.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_color.c
@@ -97,7 +97,6 @@ static int mtk_disp_color_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_disp_color *priv;
-	struct resource *res;
 	int ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -110,8 +109,7 @@ static int mtk_disp_color_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->clk);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_ioremap_resource(dev, res);
+	priv->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->regs)) {
 		dev_err(dev, "failed to ioremap color\n");
 		return PTR_ERR(priv->regs);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
index bd530e603264..6ab67e6392c7 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
@@ -263,7 +263,6 @@ static int mtk_disp_gamma_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_disp_gamma *priv;
-	struct resource *res;
 	int ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -276,8 +275,7 @@ static int mtk_disp_gamma_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->clk);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_ioremap_resource(dev, res);
+	priv->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->regs)) {
 		dev_err(dev, "failed to ioremap gamma\n");
 		return PTR_ERR(priv->regs);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
index 6428b6203ffe..ec4673448ad2 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
@@ -242,7 +242,6 @@ static const struct component_ops mtk_disp_merge_component_ops = {
 static int mtk_disp_merge_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct resource *res;
 	struct mtk_disp_merge *priv;
 	int ret;
 
@@ -250,8 +249,7 @@ static int mtk_disp_merge_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_ioremap_resource(dev, res);
+	priv->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->regs)) {
 		dev_err(dev, "failed to ioremap merge\n");
 		return PTR_ERR(priv->regs);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
index 8f52cc1f3fba..b61ddfcd880c 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
@@ -511,7 +511,6 @@ static int mtk_disp_ovl_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_disp_ovl *priv;
-	struct resource *res;
 	int irq;
 	int ret;
 
@@ -529,8 +528,7 @@ static int mtk_disp_ovl_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->clk);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_ioremap_resource(dev, res);
+	priv->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->regs)) {
 		dev_err(dev, "failed to ioremap ovl\n");
 		return PTR_ERR(priv->regs);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
index d4df17ad600a..dc8194734512 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
@@ -314,7 +314,6 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_disp_rdma *priv;
-	struct resource *res;
 	int irq;
 	int ret;
 
@@ -332,8 +331,7 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->clk);
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_ioremap_resource(dev, res);
+	priv->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->regs)) {
 		dev_err(dev, "failed to ioremap rdma\n");
 		return PTR_ERR(priv->regs);
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 45535dc7970f..07d8a9d4b008 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -1007,7 +1007,6 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_dpi *dpi;
-	struct resource *mem;
 	int ret;
 
 	dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
@@ -1038,7 +1037,7 @@ static int mtk_dpi_probe(struct platform_device *pdev)
 			dev_dbg(&pdev->dev, "Cannot find pinctrl active!\n");
 		}
 	}
-	dpi->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &mem);
+	dpi->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(dpi->regs))
 		return dev_err_probe(dev, PTR_ERR(dpi->regs),
 				     "Failed to ioremap mem resource\n");
diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 19e2b042c9d5..50a816a092bd 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -1070,7 +1070,6 @@ static int mtk_dsi_probe(struct platform_device *pdev)
 {
 	struct mtk_dsi *dsi;
 	struct device *dev = &pdev->dev;
-	struct resource *regs;
 	int irq_num;
 	int ret;
 
@@ -1113,8 +1112,7 @@ static int mtk_dsi_probe(struct platform_device *pdev)
 		goto err_unregister_host;
 	}
 
-	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	dsi->regs = devm_ioremap_resource(dev, regs);
+	dsi->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(dsi->regs)) {
 		ret = PTR_ERR(dsi->regs);
 		dev_err(dev, "Failed to ioremap memory: %d\n", ret);
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
index 0a8e0a13f516..77f55d2b5dd1 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
@@ -1428,7 +1428,6 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
 	struct device_node *cec_np, *remote, *i2c_np;
 	struct platform_device *cec_pdev;
 	struct regmap *regmap;
-	struct resource *mem;
 	int ret;
 
 	ret = mtk_hdmi_get_all_clk(hdmi, np);
@@ -1474,8 +1473,7 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
 	}
 	hdmi->sys_regmap = regmap;
 
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	hdmi->regs = devm_ioremap_resource(dev, mem);
+	hdmi->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(hdmi->regs)) {
 		ret = PTR_ERR(hdmi->regs);
 		goto put_device;
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c b/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
index 4d39ea0a05ca..e24154255960 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
@@ -271,7 +271,6 @@ static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct mtk_hdmi_ddc *ddc;
-	struct resource *mem;
 	int ret;
 
 	ddc = devm_kzalloc(dev, sizeof(struct mtk_hdmi_ddc), GFP_KERNEL);
@@ -284,8 +283,7 @@ static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
 		return PTR_ERR(ddc->clk);
 	}
 
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ddc->regs = devm_ioremap_resource(&pdev->dev, mem);
+	ddc->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(ddc->regs))
 		return PTR_ERR(ddc->regs);
 
@@ -314,8 +312,6 @@ static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
 
 	dev_dbg(dev, "ddc->adap: %p\n", &ddc->adap);
 	dev_dbg(dev, "ddc->clk: %p\n", ddc->clk);
-	dev_dbg(dev, "physical adr: %pa, end: %pa\n", &mem->start,
-		&mem->end);
 
 	return 0;
 
diff --git a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
index e06db6e56b5f..0ededf7194b2 100644
--- a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
+++ b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
@@ -277,7 +277,6 @@ static const struct component_ops mtk_mdp_rdma_component_ops = {
 static int mtk_mdp_rdma_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct resource *res;
 	struct mtk_mdp_rdma *priv;
 	int ret = 0;
 
@@ -285,8 +284,7 @@ static int mtk_mdp_rdma_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_ioremap_resource(dev, res);
+	priv->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->regs)) {
 		dev_err(dev, "failed to ioremap rdma\n");
 		return PTR_ERR(priv->regs);
