[PATCH v2 1/3] drm/mediatek: Use devm_platform_ioremap_resource()

CK Hu (胡俊光) ck.hu at mediatek.com
Wed Jul 5 20:35:11 PDT 2023


Hi, Angelo:

On Wed, 2023-07-05 at 11:42 +0200, AngeloGioacchino Del Regno wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  Instead of open coding calls to platform_get_resource() followed by
> devm_ioremap_resource(), perform a single call to the helper
> devm_platform_ioremap_resource().
> 
> Also, in order to drop the now useless struct resource pointer in
> all of the probe functions, it was also necessary to remove a
> dev_dbg() in mtk_hdmi_ddc.c that was printing the iospace start/end.
> 
> This commit brings no functional changes.
> 
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno at collabora.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_cec.c        | 3 +--
>  drivers/gpu/drm/mediatek/mtk_disp_aal.c   | 4 +---
>  drivers/gpu/drm/mediatek/mtk_disp_ccorr.c | 4 +---
>  drivers/gpu/drm/mediatek/mtk_disp_color.c | 4 +---
>  drivers/gpu/drm/mediatek/mtk_disp_gamma.c | 4 +---
>  drivers/gpu/drm/mediatek/mtk_disp_merge.c | 4 +---
>  drivers/gpu/drm/mediatek/mtk_disp_ovl.c   | 4 +---
>  drivers/gpu/drm/mediatek/mtk_disp_rdma.c  | 4 +---
>  drivers/gpu/drm/mediatek/mtk_dpi.c        | 3 +--
>  drivers/gpu/drm/mediatek/mtk_dsi.c        | 4 +---
>  drivers/gpu/drm/mediatek/mtk_hdmi.c       | 4 +---
>  drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c   | 6 +-----
>  drivers/gpu/drm/mediatek/mtk_mdp_rdma.c   | 4 +---
>  13 files changed, 13 insertions(+), 39 deletions(-)
> 
> 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);

'struct resource *res' is useless, so drop it.

Regards,
CK

> -	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);
> -- 
> 2.40.1


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