Re: [PATCH v5 10/13] soc: mediatek: cmdq: export finalize function

[Dennis-YC Hsieh]

Hi Matthias,

Thanks for your comment.

On Sat, 2020-05-16 at 20:22 +0200, Matthias Brugger wrote:
> 
> On 08/03/2020 11:52, Dennis YC Hsieh wrote:
> > Export finalize function to client which helps append eoc and jump
> > command to pkt. Let client decide call finalize or not.
> > 
> > Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@xxxxxxxxxxxx>
> > Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx>
> > ---
> >  drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 1 +
> >  drivers/soc/mediatek/mtk-cmdq-helper.c  | 7 ++-----
> >  include/linux/soc/mediatek/mtk-cmdq.h   | 8 ++++++++
> >  3 files changed, 11 insertions(+), 5 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > index 0dfcd1787e65..7daaabc26eb1 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > @@ -490,6 +490,7 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
> >  		cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
> >  		cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event);
> >  		mtk_crtc_ddp_config(crtc, cmdq_handle);
> > +		cmdq_pkt_finalize(cmdq_handle);
> >  		cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
> >  	}
> >  #endif
> 
> This should be a independent patch.
> Other then that patch looks good.

ok, I'll separate this part.


Regards,
Dennis

> 
> > diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > index a9ebbabb7439..59bc1164b411 100644
> > --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> > +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > @@ -372,7 +372,7 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)
> >  }
> >  EXPORT_SYMBOL(cmdq_pkt_assign);
> >  
> > -static int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
> > +int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
> >  {
> >  	struct cmdq_instruction inst = { {0} };
> >  	int err;
> > @@ -392,6 +392,7 @@ static int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
> >  
> >  	return err;
> >  }
> > +EXPORT_SYMBOL(cmdq_pkt_finalize);
> >  
> >  static void cmdq_pkt_flush_async_cb(struct cmdq_cb_data data)
> >  {
> > @@ -426,10 +427,6 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
> >  	unsigned long flags = 0;
> >  	struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
> >  
> > -	err = cmdq_pkt_finalize(pkt);
> > -	if (err < 0)
> > -		return err;
> > -
> >  	pkt->cb.cb = cb;
> >  	pkt->cb.data = data;
> >  	pkt->async_cb.cb = cmdq_pkt_flush_async_cb;
> > diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
> > index fec292aac83c..99e77155f967 100644
> > --- a/include/linux/soc/mediatek/mtk-cmdq.h
> > +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> > @@ -213,6 +213,14 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
> >   */
> >  int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);
> >  
> > +/**
> > + * cmdq_pkt_finalize() - Append EOC and jump command to pkt.
> > + * @pkt:	the CMDQ packet
> > + *
> > + * Return: 0 for success; else the error code is returned
> > + */
> > +int cmdq_pkt_finalize(struct cmdq_pkt *pkt);
> > +
> >  /**
> >   * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ
> >   *                          packet and call back at the end of done packet
> >