diff mbox series

[1/2] iio: adc: vf610_adc: use devm_* and dev_err_probe() to simple code

Message ID 20241104231200.2745342-1-Frank.Li@nxp.com (mailing list archive)
State Superseded
Headers show
Series [1/2] iio: adc: vf610_adc: use devm_* and dev_err_probe() to simple code | expand

Commit Message

Frank Li Nov. 4, 2024, 11:11 p.m. UTC 
Use devm_* and dev_err_probe() simplify probe function and remove
vf610_adc_remove().

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 drivers/iio/adc/vf610_adc.c | 77 +++++++++----------------------------
 1 file changed, 19 insertions(+), 58 deletions(-)

Comments

Bough Chen Nov. 5, 2024, 2:07 a.m. UTC | #1 
> -----Original Message-----
> From: Frank Li <frank.li@nxp.com>
> Sent: 2024年11月5日 7:12
> To: Bough Chen <haibo.chen@nxp.com>; Jonathan Cameron
> <jic23@kernel.org>; Lars-Peter Clausen <lars@metafoo.de>; open list:NXP i.MX
> 7D/6SX/6UL/93 AND VF610 ADC DRIVER <linux-iio@vger.kernel.org>; open
> list:NXP i.MX 7D/6SX/6UL/93 AND VF610 ADC DRIVER <imx@lists.linux.dev>;
> open list <linux-kernel@vger.kernel.org>
> Subject: [PATCH 1/2] iio: adc: vf610_adc: use devm_* and dev_err_probe() to
> simple code
> 
> Use devm_* and dev_err_probe() simplify probe function and remove
> vf610_adc_remove().

Reviewed-by: Haibo Chen <haibo.chen@nxp.com>

Best Regards
Haibo Chen
> 
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
>  drivers/iio/adc/vf610_adc.c | 77 +++++++++----------------------------
>  1 file changed, 19 insertions(+), 58 deletions(-)
> 
> diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c index
> 4d83c12975c53..4e737b193c012 100644
> --- a/drivers/iio/adc/vf610_adc.c
> +++ b/drivers/iio/adc/vf610_adc.c
> @@ -823,10 +823,8 @@ static int vf610_adc_probe(struct platform_device
> *pdev)
>  	int ret;
> 
>  	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(struct vf610_adc));
> -	if (!indio_dev) {
> -		dev_err(&pdev->dev, "Failed allocating iio device\n");
> -		return -ENOMEM;
> -	}
> +	if (!indio_dev)
> +		return dev_err_probe(&pdev->dev, -ENOMEM, "Failed allocating iio
> +device\n");
> 
>  	info = iio_priv(indio_dev);
>  	info->dev = &pdev->dev;
> @@ -842,27 +840,22 @@ static int vf610_adc_probe(struct platform_device
> *pdev)
>  	ret = devm_request_irq(info->dev, irq,
>  				vf610_adc_isr, 0,
>  				dev_name(&pdev->dev), indio_dev);
> -	if (ret < 0) {
> -		dev_err(&pdev->dev, "failed requesting irq, irq = %d\n", irq);
> -		return ret;
> -	}
> +	if (ret < 0)
> +		dev_err_probe(&pdev->dev, ret, "failed requesting irq, irq = %d\n",
> +irq);
> 
> -	info->clk = devm_clk_get(&pdev->dev, "adc");
> -	if (IS_ERR(info->clk)) {
> -		dev_err(&pdev->dev, "failed getting clock, err = %ld\n",
> -						PTR_ERR(info->clk));
> -		return PTR_ERR(info->clk);
> -	}
> +	info->clk = devm_clk_get_enabled(&pdev->dev, "adc");
> +	if (IS_ERR(info->clk))
> +		return dev_err_probe(&pdev->dev, PTR_ERR(info->clk),
> +				     "failed getting clock, err = %ld\n",
> +				     PTR_ERR(info->clk));
> 
>  	info->vref = devm_regulator_get(&pdev->dev, "vref");
>  	if (IS_ERR(info->vref))
>  		return PTR_ERR(info->vref);
> 
> -	ret = regulator_enable(info->vref);
> -	if (ret)
> -		return ret;
> -
> -	info->vref_uv = regulator_get_voltage(info->vref);
> +	info->vref_uv = devm_regulator_get_enable_read_voltage(&pdev->dev,
> "vref");
> +	if (info->vref_uv < 0)
> +		return info->vref_uv;
> 
>  	device_property_read_u32_array(dev, "fsl,adck-max-frequency",
> info->max_adck_rate, 3);
> 
> @@ -879,52 +872,21 @@ static int vf610_adc_probe(struct platform_device
> *pdev)
>  	indio_dev->channels = vf610_adc_iio_channels;
>  	indio_dev->num_channels = ARRAY_SIZE(vf610_adc_iio_channels);
> 
> -	ret = clk_prepare_enable(info->clk);
> -	if (ret) {
> -		dev_err(&pdev->dev,
> -			"Could not prepare or enable the clock.\n");
> -		goto error_adc_clk_enable;
> -	}
> -
>  	vf610_adc_cfg_init(info);
>  	vf610_adc_hw_init(info);
> 
> -	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
> -					NULL, &iio_triggered_buffer_setup_ops);
> -	if (ret < 0) {
> -		dev_err(&pdev->dev, "Couldn't initialise the buffer\n");
> -		goto error_iio_device_register;
> -	}
> +	ret = devm_iio_triggered_buffer_setup(&pdev->dev, indio_dev,
> &iio_pollfunc_store_time,
> +					      NULL, &iio_triggered_buffer_setup_ops);
> +	if (ret < 0)
> +		return dev_err_probe(&pdev->dev, ret, "Couldn't initialise the
> +buffer\n");
> 
>  	mutex_init(&info->lock);
> 
> -	ret = iio_device_register(indio_dev);
> -	if (ret) {
> -		dev_err(&pdev->dev, "Couldn't register the device.\n");
> -		goto error_adc_buffer_init;
> -	}
> +	ret = devm_iio_device_register(&pdev->dev, indio_dev);
> +	if (ret)
> +		return dev_err_probe(&pdev->dev, ret, "Couldn't register the
> +device.\n");
> 
>  	return 0;
> -
> -error_adc_buffer_init:
> -	iio_triggered_buffer_cleanup(indio_dev);
> -error_iio_device_register:
> -	clk_disable_unprepare(info->clk);
> -error_adc_clk_enable:
> -	regulator_disable(info->vref);
> -
> -	return ret;
> -}
> -
> -static void vf610_adc_remove(struct platform_device *pdev) -{
> -	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
> -	struct vf610_adc *info = iio_priv(indio_dev);
> -
> -	iio_device_unregister(indio_dev);
> -	iio_triggered_buffer_cleanup(indio_dev);
> -	regulator_disable(info->vref);
> -	clk_disable_unprepare(info->clk);
>  }
> 
>  static int vf610_adc_suspend(struct device *dev) @@ -972,7 +934,6 @@
> static DEFINE_SIMPLE_DEV_PM_OPS(vf610_adc_pm_ops, vf610_adc_suspend,
> 
>  static struct platform_driver vf610_adc_driver = {
>  	.probe          = vf610_adc_probe,
> -	.remove         = vf610_adc_remove,
>  	.driver         = {
>  		.name   = DRIVER_NAME,
>  		.of_match_table = vf610_adc_match,
> --
> 2.34.1
diff mbox series

Patch

diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
index 4d83c12975c53..4e737b193c012 100644
--- a/drivers/iio/adc/vf610_adc.c
+++ b/drivers/iio/adc/vf610_adc.c
@@ -823,10 +823,8 @@  static int vf610_adc_probe(struct platform_device *pdev)
 	int ret;
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(struct vf610_adc));
-	if (!indio_dev) {
-		dev_err(&pdev->dev, "Failed allocating iio device\n");
-		return -ENOMEM;
-	}
+	if (!indio_dev)
+		return dev_err_probe(&pdev->dev, -ENOMEM, "Failed allocating iio device\n");
 
 	info = iio_priv(indio_dev);
 	info->dev = &pdev->dev;
@@ -842,27 +840,22 @@  static int vf610_adc_probe(struct platform_device *pdev)
 	ret = devm_request_irq(info->dev, irq,
 				vf610_adc_isr, 0,
 				dev_name(&pdev->dev), indio_dev);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "failed requesting irq, irq = %d\n", irq);
-		return ret;
-	}
+	if (ret < 0)
+		dev_err_probe(&pdev->dev, ret, "failed requesting irq, irq = %d\n", irq);
 
-	info->clk = devm_clk_get(&pdev->dev, "adc");
-	if (IS_ERR(info->clk)) {
-		dev_err(&pdev->dev, "failed getting clock, err = %ld\n",
-						PTR_ERR(info->clk));
-		return PTR_ERR(info->clk);
-	}
+	info->clk = devm_clk_get_enabled(&pdev->dev, "adc");
+	if (IS_ERR(info->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(info->clk),
+				     "failed getting clock, err = %ld\n",
+				     PTR_ERR(info->clk));
 
 	info->vref = devm_regulator_get(&pdev->dev, "vref");
 	if (IS_ERR(info->vref))
 		return PTR_ERR(info->vref);
 
-	ret = regulator_enable(info->vref);
-	if (ret)
-		return ret;
-
-	info->vref_uv = regulator_get_voltage(info->vref);
+	info->vref_uv = devm_regulator_get_enable_read_voltage(&pdev->dev, "vref");
+	if (info->vref_uv < 0)
+		return info->vref_uv;
 
 	device_property_read_u32_array(dev, "fsl,adck-max-frequency", info->max_adck_rate, 3);
 
@@ -879,52 +872,21 @@  static int vf610_adc_probe(struct platform_device *pdev)
 	indio_dev->channels = vf610_adc_iio_channels;
 	indio_dev->num_channels = ARRAY_SIZE(vf610_adc_iio_channels);
 
-	ret = clk_prepare_enable(info->clk);
-	if (ret) {
-		dev_err(&pdev->dev,
-			"Could not prepare or enable the clock.\n");
-		goto error_adc_clk_enable;
-	}
-
 	vf610_adc_cfg_init(info);
 	vf610_adc_hw_init(info);
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-					NULL, &iio_triggered_buffer_setup_ops);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "Couldn't initialise the buffer\n");
-		goto error_iio_device_register;
-	}
+	ret = devm_iio_triggered_buffer_setup(&pdev->dev, indio_dev, &iio_pollfunc_store_time,
+					      NULL, &iio_triggered_buffer_setup_ops);
+	if (ret < 0)
+		return dev_err_probe(&pdev->dev, ret, "Couldn't initialise the buffer\n");
 
 	mutex_init(&info->lock);
 
-	ret = iio_device_register(indio_dev);
-	if (ret) {
-		dev_err(&pdev->dev, "Couldn't register the device.\n");
-		goto error_adc_buffer_init;
-	}
+	ret = devm_iio_device_register(&pdev->dev, indio_dev);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "Couldn't register the device.\n");
 
 	return 0;
-
-error_adc_buffer_init:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_iio_device_register:
-	clk_disable_unprepare(info->clk);
-error_adc_clk_enable:
-	regulator_disable(info->vref);
-
-	return ret;
-}
-
-static void vf610_adc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct vf610_adc *info = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	regulator_disable(info->vref);
-	clk_disable_unprepare(info->clk);
 }
 
 static int vf610_adc_suspend(struct device *dev)
@@ -972,7 +934,6 @@  static DEFINE_SIMPLE_DEV_PM_OPS(vf610_adc_pm_ops, vf610_adc_suspend,
 
 static struct platform_driver vf610_adc_driver = {
 	.probe          = vf610_adc_probe,
-	.remove         = vf610_adc_remove,
 	.driver         = {
 		.name   = DRIVER_NAME,
 		.of_match_table = vf610_adc_match,