Re: [PATCH] media: rkisp1: Add and use rkisp1_has_feature() macro

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Hi Laurent,

On Wed, Jul 20, 2022 at 01:24:32AM +0300, Laurent Pinchart wrote:
> Simplify feature tests with a macro that shortens lines.
> 
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

Reviewed-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>

> ---
> Sending to the correct mailing list this time, sorry for the noise.
> ---
>  .../media/platform/rockchip/rkisp1/rkisp1-common.h |  3 +++
>  .../media/platform/rockchip/rkisp1/rkisp1-dev.c    | 14 +++++++-------
>  2 files changed, 10 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> index 8056997d5c29..0aae802464ac 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
> @@ -111,6 +111,9 @@ enum rkisp1_feature {
>  	RKISP1_FEATURE_MIPI_CSI2 = BIT(0),
>  };
>  
> +#define rkisp1_has_feature(rkisp1, feature) \
> +	((rkisp1)->info->features & RKISP1_FEATURE_##feature)
> +
>  /*
>   * struct rkisp1_info - Model-specific ISP Information
>   *
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> index f2475c6235ea..e348d8c86861 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
> @@ -206,7 +206,7 @@ static int rkisp1_subdev_notifier_register(struct rkisp1_device *rkisp1)
>  		switch (reg) {
>  		case 0:
>  			/* MIPI CSI-2 port */
> -			if (!(rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2)) {
> +			if (!rkisp1_has_feature(rkisp1, MIPI_CSI2)) {
>  				dev_err(rkisp1->dev,
>  					"internal CSI must be available for port 0\n");
>  				ret = -EINVAL;
> @@ -338,7 +338,7 @@ static int rkisp1_create_links(struct rkisp1_device *rkisp1)
>  	unsigned int i;
>  	int ret;
>  
> -	if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) {
> +	if (rkisp1_has_feature(rkisp1, MIPI_CSI2)) {
>  		/* Link the CSI receiver to the ISP. */
>  		ret = media_create_pad_link(&rkisp1->csi.sd.entity,
>  					    RKISP1_CSI_PAD_SRC,
> @@ -390,7 +390,7 @@ static int rkisp1_create_links(struct rkisp1_device *rkisp1)
>  
>  static void rkisp1_entities_unregister(struct rkisp1_device *rkisp1)
>  {
> -	if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2)
> +	if (rkisp1_has_feature(rkisp1, MIPI_CSI2))
>  		rkisp1_csi_unregister(rkisp1);
>  	rkisp1_params_unregister(rkisp1);
>  	rkisp1_stats_unregister(rkisp1);
> @@ -423,7 +423,7 @@ static int rkisp1_entities_register(struct rkisp1_device *rkisp1)
>  	if (ret)
>  		goto error;
>  
> -	if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) {
> +	if (rkisp1_has_feature(rkisp1, MIPI_CSI2)) {
>  		ret = rkisp1_csi_register(rkisp1);
>  		if (ret)
>  			goto error;
> @@ -590,7 +590,7 @@ static int rkisp1_probe(struct platform_device *pdev)
>  		goto err_unreg_v4l2_dev;
>  	}
>  
> -	if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2) {
> +	if (rkisp1_has_feature(rkisp1, MIPI_CSI2)) {
>  		ret = rkisp1_csi_init(rkisp1);
>  		if (ret)
>  			goto err_unreg_media_dev;
> @@ -611,7 +611,7 @@ static int rkisp1_probe(struct platform_device *pdev)
>  err_unreg_entities:
>  	rkisp1_entities_unregister(rkisp1);
>  err_cleanup_csi:
> -	if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2)
> +	if (rkisp1_has_feature(rkisp1, MIPI_CSI2))
>  		rkisp1_csi_cleanup(rkisp1);
>  err_unreg_media_dev:
>  	media_device_unregister(&rkisp1->media_dev);
> @@ -630,7 +630,7 @@ static int rkisp1_remove(struct platform_device *pdev)
>  	v4l2_async_nf_cleanup(&rkisp1->notifier);
>  
>  	rkisp1_entities_unregister(rkisp1);
> -	if (rkisp1->info->features & RKISP1_FEATURE_MIPI_CSI2)
> +	if (rkisp1_has_feature(rkisp1, MIPI_CSI2))
>  		rkisp1_csi_cleanup(rkisp1);
>  	rkisp1_debug_cleanup(rkisp1);



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