Re: [PATCH -next] dss:use devm_platform_ioremap_resource_byname

Sam Ravnborg
2020-10-16T21:55:16Z

Hi Zhang Qilong

On Wed, Sep 16, 2020 at 07:13:53PM +0800, Qilong Zhang wrote:
> Use the devm_platform_ioremap_resource_byname() helper instead of
> calling platform_get_resource_byname() and devm_ioremap_resource()
> separately.
>
> Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>

Thanks, applied to drm-misc-next. The patch will appear in -next in a
few weeks.

While applying I had to update a few things:
- checkpatch warning due to indent
- warning for unused variable
- subject, should start with "omapfb:" like other patches touching the
same driver.

I also got a warning because you name differs in your mail and your
s-o-b. "Zhang Qilong" is not the same as "Qilong Zhang".
It would be nice if you for next submission have the same name in both
places.

The patch itself was fine - nice simplifications.

Sam

> ---
> .../video/fbdev/omap2/omapfb/dss/hdmi4_core.c | 10 +--------
> .../video/fbdev/omap2/omapfb/dss/hdmi5_core.c | 10 +--------
> .../video/fbdev/omap2/omapfb/dss/hdmi_phy.c | 10 +--------
> .../video/fbdev/omap2/omapfb/dss/hdmi_pll.c | 9 +-------
> .../video/fbdev/omap2/omapfb/dss/video-pll.c | 21 +++----------------
> 5 files changed, 7 insertions(+), 53 deletions(-)
>
> diff --git a/drivers/video/fbdev/omap2/omapfb/dss/hdmi4_core.c b/drivers/video/fbdev/omap2/omapfb/dss/hdmi4_core.c
> index 7ca1803bf161..726c190862d4 100644
> --- a/drivers/video/fbdev/omap2/omapfb/dss/hdmi4_core.c
> +++ b/drivers/video/fbdev/omap2/omapfb/dss/hdmi4_core.c
> @@ -875,15 +875,7 @@ void hdmi4_audio_stop(struct hdmi_core_data *core, struct hdmi_wp_data *wp)
>
> int hdmi4_core_init(struct platform_device *pdev, struct hdmi_core_data *core)
> {
> - struct resource *res;
> -
> - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
> - if (!res) {
> - DSSERR("can't get CORE mem resource\n");
> - return -EINVAL;
> - }
> -
> - core->base = devm_ioremap_resource(&pdev->dev, res);
> + core->base = devm_platform_ioremap_resource_byname(pdev, "core");
> if (IS_ERR(core->base)) {
> DSSERR("can't ioremap CORE\n");
> return PTR_ERR(core->base);
> diff --git a/drivers/video/fbdev/omap2/omapfb/dss/hdmi5_core.c b/drivers/video/fbdev/omap2/omapfb/dss/hdmi5_core.c
> index 2f6ff14a48d9..eda29d3032e1 100644
> --- a/drivers/video/fbdev/omap2/omapfb/dss/hdmi5_core.c
> +++ b/drivers/video/fbdev/omap2/omapfb/dss/hdmi5_core.c
> @@ -887,15 +887,7 @@ int hdmi5_audio_config(struct hdmi_core_data *core, struct hdmi_wp_data *wp,
>
> int hdmi5_core_init(struct platform_device *pdev, struct hdmi_core_data *core)
> {
> - struct resource *res;
> -
> - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
> - if (!res) {
> - DSSERR("can't get CORE IORESOURCE_MEM HDMI\n");
> - return -EINVAL;
> - }
> -
> - core->base = devm_ioremap_resource(&pdev->dev, res);
> + core->base = devm_platform_ioremap_resource_byname(pdev, "core");
> if (IS_ERR(core->base)) {
> DSSERR("can't ioremap HDMI core\n");
> return PTR_ERR(core->base);
> diff --git a/drivers/video/fbdev/omap2/omapfb/dss/hdmi_phy.c b/drivers/video/fbdev/omap2/omapfb/dss/hdmi_phy.c
> index 9c645adba9e2..6fbfeb01b315 100644
> --- a/drivers/video/fbdev/omap2/omapfb/dss/hdmi_phy.c
> +++ b/drivers/video/fbdev/omap2/omapfb/dss/hdmi_phy.c
> @@ -207,19 +207,11 @@ static const struct hdmi_phy_features *hdmi_phy_get_features(void)
>
> int hdmi_phy_init(struct platform_device *pdev, struct hdmi_phy_data *phy)
> {
> - struct resource *res;
> -
> phy_feat = hdmi_phy_get_features();
> if (!phy_feat)
> return -ENODEV;
>
> - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy");
> - if (!res) {
> - DSSERR("can't get PHY mem resource\n");
> - return -EINVAL;
> - }
> -
> - phy->base = devm_ioremap_resource(&pdev->dev, res);
> + phy->base = devm_platform_ioremap_resource_byname(pdev, "phy");
> if (IS_ERR(phy->base)) {
> DSSERR("can't ioremap TX PHY\n");
> return PTR_ERR(phy->base);
> diff --git a/drivers/video/fbdev/omap2/omapfb/dss/hdmi_pll.c b/drivers/video/fbdev/omap2/omapfb/dss/hdmi_pll.c
> index 4991be031b0b..eb984d9999fe 100644
> --- a/drivers/video/fbdev/omap2/omapfb/dss/hdmi_pll.c
> +++ b/drivers/video/fbdev/omap2/omapfb/dss/hdmi_pll.c
> @@ -220,17 +220,10 @@ int hdmi_pll_init(struct platform_device *pdev, struct hdmi_pll_data *pll,
> struct hdmi_wp_data *wp)
> {
> int r;
> - struct resource *res;
>
> pll->wp = wp;
>
> - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll");
> - if (!res) {
> - DSSERR("can't get PLL mem resource\n");
> - return -EINVAL;
> - }
> -
> - pll->base = devm_ioremap_resource(&pdev->dev, res);
> + pll->base = devm_platform_ioremap_resource_byname(pdev, "pll");
> if (IS_ERR(pll->base)) {
> DSSERR("can't ioremap PLLCTRL\n");
> return PTR_ERR(pll->base);
> diff --git a/drivers/video/fbdev/omap2/omapfb/dss/video-pll.c b/drivers/video/fbdev/omap2/omapfb/dss/video-pll.c
> index f45fe60b9e7d..bff03d920722 100644
> --- a/drivers/video/fbdev/omap2/omapfb/dss/video-pll.c
> +++ b/drivers/video/fbdev/omap2/omapfb/dss/video-pll.c
> @@ -129,7 +129,6 @@ struct dss_pll *dss_video_pll_init(struct platform_device *pdev, int id,
> const char * const clkctrl_name[] = { "pll1_clkctrl", "pll2_clkctrl" };
> const char * const clkin_name[] = { "video1_clk", "video2_clk" };
>
> - struct resource *res;
> struct dss_video_pll *vpll;
> void __iomem *pll_base, *clkctrl_base;
> struct clk *clk;
> @@ -138,14 +137,7 @@ struct dss_pll *dss_video_pll_init(struct platform_device *pdev, int id,
>
> /* PLL CONTROL */
>
> - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, reg_name[id]);
> - if (!res) {
> - dev_err(&pdev->dev,
> - "missing platform resource data for pll%d\n", id);
> - return ERR_PTR(-ENODEV);
> - }
> -
> - pll_base = devm_ioremap_resource(&pdev->dev, res);
> + pll_base = devm_platform_ioremap_resource_byname(pdev, reg_name[id]);
> if (IS_ERR(pll_base)) {
> dev_err(&pdev->dev, "failed to ioremap pll%d reg_name\n", id);
> return ERR_CAST(pll_base);
> @@ -153,15 +145,8 @@ struct dss_pll *dss_video_pll_init(struct platform_device *pdev, int id,
>
> /* CLOCK CONTROL */
>
> - res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> - clkctrl_name[id]);
> - if (!res) {
> - dev_err(&pdev->dev,
> - "missing platform resource data for pll%d\n", id);
> - return ERR_PTR(-ENODEV);
> - }
> -
> - clkctrl_base = devm_ioremap_resource(&pdev->dev, res);
> + clkctrl_base = devm_platform_ioremap_resource_byname(pdev,
> + clkctrl_name[id]);
> if (IS_ERR(clkctrl_base)) {
> dev_err(&pdev->dev, "failed to ioremap pll%d clkctrl\n", id);
> return ERR_CAST(clkctrl_base);
> --
> 2.17.1
>
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