linux-kernel - Re: [PATCH v2 13/17] drm/vc4: crtc: Make encoder lookup helper public

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Date:   Mon, 28 Nov 2022 17:26:34 -0300
From:   Maíra Canal <mcanal@...lia.com>
To:     Maxime Ripard <maxime@...no.tech>, Daniel Vetter <daniel@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        David Airlie <airlied@...il.com>,
        Thomas Zimmermann <tzimmermann@...e.de>
Cc:     dri-devel@...ts.freedesktop.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        kunit-dev@...glegroups.com, linux-media@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linaro-mm-sig@...ts.linaro.org,
        Brendan Higgins <brendan.higgins@...ux.dev>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Javier Martinez Canillas <javierm@...hat.com>,
        linux-kernel@...r.kernel.org, David Gow <davidgow@...gle.com>
Subject: Re: [PATCH v2 13/17] drm/vc4: crtc: Make encoder lookup helper public

On 11/28/22 11:53, Maxime Ripard wrote:
> We'll need a function that looks up an encoder by its vc4_encoder_type.
> Such a function is already present in the CRTC code, so let's make it
> public so that we can reuse it in the unit tests.
> 
> Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>
> Signed-off-by: Maxime Ripard <maxime@...no.tech>

Reviewed-by: Maíra Canal <mcanal@...lia.com>

Best Regards,
- Maíra Canal

> ---
>  drivers/gpu/drm/vc4/vc4_crtc.c | 17 +----------------
>  drivers/gpu/drm/vc4/vc4_drv.h  | 16 ++++++++++++++++
>  2 files changed, 17 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
> index 7a2c54efecb0..59e473059fa2 100644
> --- a/drivers/gpu/drm/vc4/vc4_crtc.c
> +++ b/drivers/gpu/drm/vc4/vc4_crtc.c
> @@ -486,21 +486,6 @@ static int vc4_crtc_disable(struct drm_crtc *crtc,
>  	return 0;
>  }
>  
> -static struct drm_encoder *vc4_crtc_get_encoder_by_type(struct drm_crtc *crtc,
> -							enum vc4_encoder_type type)
> -{
> -	struct drm_encoder *encoder;
> -
> -	drm_for_each_encoder(encoder, crtc->dev) {
> -		struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
> -
> -		if (vc4_encoder->type == type)
> -			return encoder;
> -	}
> -
> -	return NULL;
> -}
> -
>  int vc4_crtc_disable_at_boot(struct drm_crtc *crtc)
>  {
>  	struct drm_device *drm = crtc->dev;
> @@ -536,7 +521,7 @@ int vc4_crtc_disable_at_boot(struct drm_crtc *crtc)
>  
>  	pv_data = vc4_crtc_to_vc4_pv_data(vc4_crtc);
>  	encoder_type = pv_data->encoder_types[encoder_sel];
> -	encoder = vc4_crtc_get_encoder_by_type(crtc, encoder_type);
> +	encoder = vc4_find_encoder_by_type(drm, encoder_type);
>  	if (WARN_ON(!encoder))
>  		return 0;
>  
> diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
> index cd2002fff115..54352db48476 100644
> --- a/drivers/gpu/drm/vc4/vc4_drv.h
> +++ b/drivers/gpu/drm/vc4/vc4_drv.h
> @@ -495,6 +495,22 @@ to_vc4_encoder(const struct drm_encoder *encoder)
>  	return container_of(encoder, struct vc4_encoder, base);
>  }
>  
> +static inline
> +struct drm_encoder *vc4_find_encoder_by_type(struct drm_device *drm,
> +					     enum vc4_encoder_type type)
> +{
> +	struct drm_encoder *encoder;
> +
> +	drm_for_each_encoder(encoder, drm) {
> +		struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder);
> +
> +		if (vc4_encoder->type == type)
> +			return encoder;
> +	}
> +
> +	return NULL;
> +}
> +
>  struct vc4_crtc_data {
>  	const char *name;
>  
>