diff mbox series

[RFC] phy: freescale: fsl-samsung-hdmi: Use helper function devm_clk_get_enabled()

Message ID tencent_B5D4CEE5B9DE468871AF5159433E785D9D0A@qq.com
State New
Headers show
Series [RFC] phy: freescale: fsl-samsung-hdmi: Use helper function devm_clk_get_enabled() | expand

Commit Message

xiaopeitux@foxmail.com Jan. 13, 2025, 7:08 a.m. UTC
From: Pei Xiao <xiaopei01@kylinos.cn>

Since commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for prepared
and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be
replaced by devm_clk_get_enabled() when driver enables the clocks for the
whole lifetime of the device. Moreover, it is no longer necessary to
unprepare and disable the clocks explicitly.

Fixes: 6ad082bee902 ("phy: freescale: add Samsung HDMI PHY")
Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
---
 drivers/phy/freescale/phy-fsl-samsung-hdmi.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)

Comments

Adam Ford Jan. 14, 2025, 11:26 a.m. UTC | #1
On Mon, Jan 13, 2025 at 1:08 AM <xiaopeitux@foxmail.com> wrote:
>
> From: Pei Xiao <xiaopei01@kylinos.cn>
>
> Since commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for prepared
> and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be
> replaced by devm_clk_get_enabled() when driver enables the clocks for the
> whole lifetime of the device. Moreover, it is no longer necessary to
> unprepare and disable the clocks explicitly.
>
> Fixes: 6ad082bee902 ("phy: freescale: add Samsung HDMI PHY")

I would argue that it is not a fix, but an improvement.  I don't think
anything was technically broken before, but Vinod may have a different
opinion.

> Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>

Tested-by: Adam Ford <aford173@gmail.com> # imx8mp-beacon

> ---
>  drivers/phy/freescale/phy-fsl-samsung-hdmi.c | 17 ++---------------
>  1 file changed, 2 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/phy/freescale/phy-fsl-samsung-hdmi.c b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
> index 1a079075de67..170eac317b16 100644
> --- a/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
> +++ b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
> @@ -667,7 +667,7 @@ static int fsl_samsung_hdmi_phy_probe(struct platform_device *pdev)
>         if (IS_ERR(phy->regs))
>                 return PTR_ERR(phy->regs);
>
> -       phy->apbclk = devm_clk_get(phy->dev, "apb");
> +       phy->apbclk = devm_clk_get_enabled(phy->dev, "apb");
>         if (IS_ERR(phy->apbclk))
>                 return dev_err_probe(phy->dev, PTR_ERR(phy->apbclk),
>                                      "failed to get apb clk\n");
> @@ -677,29 +677,16 @@ static int fsl_samsung_hdmi_phy_probe(struct platform_device *pdev)
>                 return dev_err_probe(phy->dev, PTR_ERR(phy->refclk),
>                                      "failed to get ref clk\n");
>
> -       ret = clk_prepare_enable(phy->apbclk);
> -       if (ret) {
> -               dev_err(phy->dev, "failed to enable apbclk\n");
> -               return ret;
> -       }
> -
>         pm_runtime_get_noresume(phy->dev);
>         pm_runtime_set_active(phy->dev);
>         pm_runtime_enable(phy->dev);
>
>         ret = phy_clk_register(phy);
> -       if (ret) {
> +       if (ret)
>                 dev_err(&pdev->dev, "register clk failed\n");
> -               goto register_clk_failed;
> -       }
>
>         pm_runtime_put(phy->dev);
>
> -       return 0;
> -
> -register_clk_failed:
> -       clk_disable_unprepare(phy->apbclk);
> -
>         return ret;
>  }
>
> --
> 2.25.1
>
diff mbox series

Patch

diff --git a/drivers/phy/freescale/phy-fsl-samsung-hdmi.c b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
index 1a079075de67..170eac317b16 100644
--- a/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
+++ b/drivers/phy/freescale/phy-fsl-samsung-hdmi.c
@@ -667,7 +667,7 @@  static int fsl_samsung_hdmi_phy_probe(struct platform_device *pdev)
 	if (IS_ERR(phy->regs))
 		return PTR_ERR(phy->regs);
 
-	phy->apbclk = devm_clk_get(phy->dev, "apb");
+	phy->apbclk = devm_clk_get_enabled(phy->dev, "apb");
 	if (IS_ERR(phy->apbclk))
 		return dev_err_probe(phy->dev, PTR_ERR(phy->apbclk),
 				     "failed to get apb clk\n");
@@ -677,29 +677,16 @@  static int fsl_samsung_hdmi_phy_probe(struct platform_device *pdev)
 		return dev_err_probe(phy->dev, PTR_ERR(phy->refclk),
 				     "failed to get ref clk\n");
 
-	ret = clk_prepare_enable(phy->apbclk);
-	if (ret) {
-		dev_err(phy->dev, "failed to enable apbclk\n");
-		return ret;
-	}
-
 	pm_runtime_get_noresume(phy->dev);
 	pm_runtime_set_active(phy->dev);
 	pm_runtime_enable(phy->dev);
 
 	ret = phy_clk_register(phy);
-	if (ret) {
+	if (ret)
 		dev_err(&pdev->dev, "register clk failed\n");
-		goto register_clk_failed;
-	}
 
 	pm_runtime_put(phy->dev);
 
-	return 0;
-
-register_clk_failed:
-	clk_disable_unprepare(phy->apbclk);
-
 	return ret;
 }