Re: [PATCH 10/22] drm/mediatek: Use simple encoder

[CK Hu <ck.hu@xxxxxxxxxxxx>]

Hi, Thomas:

On Thu, 2020-03-05 at 16:59 +0100, Thomas Zimmermann wrote:
> The mediatak driver uses empty implementations for its encoders. Replace
> the code with the generic simple encoder.
> 

Acked-by: CK Hu <ck.hu@xxxxxxxxxxxx>

> Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 14 +++-----------
>  drivers/gpu/drm/mediatek/mtk_dsi.c | 14 +++-----------
>  2 files changed, 6 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 14fbe1c09ce9..9c90c58e5acd 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -20,6 +20,7 @@
>  #include <drm/drm_bridge.h>
>  #include <drm/drm_crtc.h>
>  #include <drm/drm_of.h>
> +#include <drm/drm_simple_kms_helper.h>
>  
>  #include "mtk_dpi_regs.h"
>  #include "mtk_drm_ddp_comp.h"
> @@ -509,15 +510,6 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
>  	return 0;
>  }
>  
> -static void mtk_dpi_encoder_destroy(struct drm_encoder *encoder)
> -{
> -	drm_encoder_cleanup(encoder);
> -}
> -
> -static const struct drm_encoder_funcs mtk_dpi_encoder_funcs = {
> -	.destroy = mtk_dpi_encoder_destroy,
> -};
> -
>  static bool mtk_dpi_encoder_mode_fixup(struct drm_encoder *encoder,
>  				       const struct drm_display_mode *mode,
>  				       struct drm_display_mode *adjusted_mode)
> @@ -596,8 +588,8 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
>  		return ret;
>  	}
>  
> -	ret = drm_encoder_init(drm_dev, &dpi->encoder, &mtk_dpi_encoder_funcs,
> -			       DRM_MODE_ENCODER_TMDS, NULL);
> +	ret = drm_simple_encoder_init(drm_dev, &dpi->encoder,
> +				      DRM_MODE_ENCODER_TMDS);
>  	if (ret) {
>  		dev_err(dev, "Failed to initialize decoder: %d\n", ret);
>  		goto err_unregister;
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index 0ede69830a9d..a9a25087112f 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -22,6 +22,7 @@
>  #include <drm/drm_panel.h>
>  #include <drm/drm_print.h>
>  #include <drm/drm_probe_helper.h>
> +#include <drm/drm_simple_kms_helper.h>
>  
>  #include "mtk_drm_ddp_comp.h"
>  
> @@ -787,15 +788,6 @@ static void mtk_output_dsi_disable(struct mtk_dsi *dsi)
>  	dsi->enabled = false;
>  }
>  
> -static void mtk_dsi_encoder_destroy(struct drm_encoder *encoder)
> -{
> -	drm_encoder_cleanup(encoder);
> -}
> -
> -static const struct drm_encoder_funcs mtk_dsi_encoder_funcs = {
> -	.destroy = mtk_dsi_encoder_destroy,
> -};
> -
>  static bool mtk_dsi_encoder_mode_fixup(struct drm_encoder *encoder,
>  				       const struct drm_display_mode *mode,
>  				       struct drm_display_mode *adjusted_mode)
> @@ -888,8 +880,8 @@ static int mtk_dsi_create_conn_enc(struct drm_device *drm, struct mtk_dsi *dsi)
>  {
>  	int ret;
>  
> -	ret = drm_encoder_init(drm, &dsi->encoder, &mtk_dsi_encoder_funcs,
> -			       DRM_MODE_ENCODER_DSI, NULL);
> +	ret = drm_simple_encoder_init(drm, &dsi->encoder,
> +				      DRM_MODE_ENCODER_DSI);
>  	if (ret) {
>  		DRM_ERROR("Failed to encoder init to drm\n");
>  		return ret;