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Message-ID: <814d99545fb4bc571106e3995976332fba67909a.camel@mediatek.com>
Date: Thu, 6 Jul 2023 03:35:11 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: "angelogioacchino.delregno@...labora.com"
<angelogioacchino.delregno@...labora.com>,
"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>
CC: "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-mediatek@...ts.infradead.org"
<linux-mediatek@...ts.infradead.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"matthias.bgg@...il.com" <matthias.bgg@...il.com>,
"kernel@...labora.com" <kernel@...labora.com>
Subject: Re: [PATCH v2 1/3] drm/mediatek: Use devm_platform_ioremap_resource()
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@...labora.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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