Input: mt6779-keypad - use devm_clk_get_enabled()

[PATCH] Input: mt6779-keypad - use devm_clk_get_enabled()

Posted by Dmitry Torokhov 3 weeks, 1 day ago

Switch to using devm_clk_get_enable() helper instead of acquiring the
clock with devm_clk_get(), enabling it, and defining and installing
a custom devm action to call clk_disable().

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/keyboard/mt6779-keypad.c | 18 +-----------------
 1 file changed, 1 insertion(+), 17 deletions(-)

diff --git a/drivers/input/keyboard/mt6779-keypad.c b/drivers/input/keyboard/mt6779-keypad.c
index 19f69d167fbd..c13880103429 100644
--- a/drivers/input/keyboard/mt6779-keypad.c
+++ b/drivers/input/keyboard/mt6779-keypad.c
@@ -92,11 +92,6 @@ static irqreturn_t mt6779_keypad_irq_handler(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static void mt6779_keypad_clk_disable(void *data)
-{
-	clk_disable_unprepare(data);
-}
-
 static void mt6779_keypad_calc_row_col_single(unsigned int key,
 					      unsigned int *row,
 					      unsigned int *col)
@@ -213,21 +208,10 @@ static int mt6779_keypad_pdrv_probe(struct platform_device *pdev)
 	regmap_update_bits(keypad->regmap, MTK_KPD_SEL, MTK_KPD_SEL_COL,
 			   MTK_KPD_SEL_COLMASK(keypad->n_cols));
 
-	keypad->clk = devm_clk_get(&pdev->dev, "kpd");
+	keypad->clk = devm_clk_get_enabled(&pdev->dev, "kpd");
 	if (IS_ERR(keypad->clk))
 		return PTR_ERR(keypad->clk);
 
-	error = clk_prepare_enable(keypad->clk);
-	if (error) {
-		dev_err(&pdev->dev, "cannot prepare/enable keypad clock\n");
-		return error;
-	}
-
-	error = devm_add_action_or_reset(&pdev->dev, mt6779_keypad_clk_disable,
-					 keypad->clk);
-	if (error)
-		return error;
-
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
 		return irq;
-- 
2.46.0.295.g3b9ea8a38a-goog


-- 
Dmitry

Re: [PATCH] Input: mt6779-keypad - use devm_clk_get_enabled()

Posted by Mattijs Korpershoek 3 weeks, 1 day ago

Hi Dmitry

Thank you for the patch.

On mar., août 27, 2024 at 11:00, Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote:

> Switch to using devm_clk_get_enable() helper instead of acquiring the
> clock with devm_clk_get(), enabling it, and defining and installing
> a custom devm action to call clk_disable().
>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>

> ---
>  drivers/input/keyboard/mt6779-keypad.c | 18 +-----------------
>  1 file changed, 1 insertion(+), 17 deletions(-)
>
> diff --git a/drivers/input/keyboard/mt6779-keypad.c b/drivers/input/keyboard/mt6779-keypad.c
> index 19f69d167fbd..c13880103429 100644
> --- a/drivers/input/keyboard/mt6779-keypad.c
> +++ b/drivers/input/keyboard/mt6779-keypad.c
> @@ -92,11 +92,6 @@ static irqreturn_t mt6779_keypad_irq_handler(int irq, void *dev_id)
>  	return IRQ_HANDLED;
>  }
>  
> -static void mt6779_keypad_clk_disable(void *data)
> -{
> -	clk_disable_unprepare(data);
> -}
> -
>  static void mt6779_keypad_calc_row_col_single(unsigned int key,
>  					      unsigned int *row,
>  					      unsigned int *col)
> @@ -213,21 +208,10 @@ static int mt6779_keypad_pdrv_probe(struct platform_device *pdev)
>  	regmap_update_bits(keypad->regmap, MTK_KPD_SEL, MTK_KPD_SEL_COL,
>  			   MTK_KPD_SEL_COLMASK(keypad->n_cols));
>  
> -	keypad->clk = devm_clk_get(&pdev->dev, "kpd");
> +	keypad->clk = devm_clk_get_enabled(&pdev->dev, "kpd");
>  	if (IS_ERR(keypad->clk))
>  		return PTR_ERR(keypad->clk);
>  
> -	error = clk_prepare_enable(keypad->clk);
> -	if (error) {
> -		dev_err(&pdev->dev, "cannot prepare/enable keypad clock\n");
> -		return error;
> -	}
> -
> -	error = devm_add_action_or_reset(&pdev->dev, mt6779_keypad_clk_disable,
> -					 keypad->clk);
> -	if (error)
> -		return error;
> -
>  	irq = platform_get_irq(pdev, 0);
>  	if (irq < 0)
>  		return irq;
> -- 
> 2.46.0.295.g3b9ea8a38a-goog
>
>
> -- 
> Dmitry