linux-kernel - Re: [PATCH v2] drm/mediatek: Add ovl

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Date:   Thu, 30 Mar 2023 01:48:04 +0000
From:   Nancy Lin (林欣螢) <Nancy.Lin@...iatek.com>
To:     CK Hu (胡俊光) <ck.hu@...iatek.com>,
        "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>,
        "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>
CC:     "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Shawn Sung (宋孝謙) 
        <Shawn.Sung@...iatek.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        Singo Chang (張興國) 
        <Singo.Chang@...iatek.com>,
        Project_Global_Chrome_Upstream_Group 
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2] drm/mediatek: Add ovl_adaptor get format function

Hi CK,

Thanks for the review.

On Wed, 2023-03-29 at 08:15 +0000, CK Hu (胡俊光) wrote:
> Hi, Nancy:
> 
> On Wed, 2023-03-29 at 09:59 +0800, Nancy.Lin wrote:
> > Add ovl_adaptor get_format and get_num_formats component function.
> > The two functions are need for getting the supported format in
> > mtk_plane_init().
> > 
> > Signed-off-by: Nancy.Lin <nancy.lin@...iatek.com>
> > ---
> >  drivers/gpu/drm/mediatek/mtk_disp_drv.h       |  2 ++
> >  .../gpu/drm/mediatek/mtk_disp_ovl_adaptor.c   | 24
> > +++++++++++++++++++
> >  drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c   |  2 ++
> >  3 files changed, 28 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > index 0d28b2e2069c..da2de17b84e9 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
> > @@ -124,6 +124,8 @@ void mtk_ovl_adaptor_start(struct device *dev);
> >  void mtk_ovl_adaptor_stop(struct device *dev);
> >  unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev);
> >  struct device *mtk_ovl_adaptor_dma_dev_get(struct device *dev);
> > +const u32 *mtk_ovl_adaptor_get_formats(struct device *dev);
> > +size_t mtk_ovl_adaptor_get_num_formats(struct device *dev);
> >  
> >  void mtk_rdma_bypass_shadow(struct device *dev);
> >  int mtk_rdma_clk_enable(struct device *dev);
> > diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> > b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> > index 046217828ab3..b5d28c392c57 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> > @@ -25,6 +25,20 @@
> >  #define MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH 1920
> >  #define MTK_OVL_ADAPTOR_LAYER_NUM 4
> >  
> > +static const u32 formats[] = {
> > +	DRM_FORMAT_XRGB8888,
> > +	DRM_FORMAT_ARGB8888,
> > +	DRM_FORMAT_BGRX8888,
> > +	DRM_FORMAT_BGRA8888,
> > +	DRM_FORMAT_ABGR8888,
> > +	DRM_FORMAT_XBGR8888,
> > +	DRM_FORMAT_RGB888,
> > +	DRM_FORMAT_BGR888,
> > +	DRM_FORMAT_RGB565,
> > +	DRM_FORMAT_UYVY,
> > +	DRM_FORMAT_YUYV,
> > +};
> > +
> >  enum mtk_ovl_adaptor_comp_type {
> >  	OVL_ADAPTOR_TYPE_RDMA = 0,
> >  	OVL_ADAPTOR_TYPE_MERGE,
> > @@ -297,6 +311,16 @@ void mtk_ovl_adaptor_disable_vblank(struct
> > device *dev)
> >  	mtk_ethdr_disable_vblank(ovl_adaptor-
> > > ovl_adaptor_comp[OVL_ADAPTOR_ETHDR0]);
> > 
> >  }
> >  
> > +const u32 *mtk_ovl_adaptor_get_formats(struct device *dev)
> > +{
> > +	return formats;
> 
> The supported formats depend on the mdp-rdma hardware capability, so
> get formats from mdp-rdma driver.
> 
> Regards,
> CK
> 
OK, I will add mdp-rdma supported format api for ovl_adaptor.

Regards,
Nancy

> > +}
> > +
> > +size_t mtk_ovl_adaptor_get_num_formats(struct device *dev)
> > +{
> > +	return ARRAY_SIZE(formats);
> > +}
> > +
> >  void mtk_ovl_adaptor_add_comp(struct device *dev, struct mtk_mutex
> > *mutex)
> >  {
> >  	mtk_mutex_add_comp(mutex, DDP_COMPONENT_MDP_RDMA0);
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > index 1a0c4f7e352a..f114da4d36a9 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
> > @@ -410,6 +410,8 @@ static const struct mtk_ddp_comp_funcs
> > ddp_ovl_adaptor = {
> >  	.disconnect = mtk_ovl_adaptor_disconnect,
> >  	.add = mtk_ovl_adaptor_add_comp,
> >  	.remove = mtk_ovl_adaptor_remove_comp,
> > +	.get_formats = mtk_ovl_adaptor_get_formats,
> > +	.get_num_formats = mtk_ovl_adaptor_get_num_formats,
> >  };
> >  
> >  static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX]
> > =
> > {