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

Chun-Kuang Hu
2020-05-25T10:49:31Z

Hi, Matthias:

Matthias Brugger <matthias.bgg@gmail.com> 於 2020年5月25日 週一 下午4:38寫道：
>
>
>
> On 25/05/2020 02:23, Chun-Kuang Hu wrote:
> > Hi, Matthias:
> >
> > Matthias Brugger <matthias.bgg@gmail.com> 於 2020年5月17日 週日 上午2:22寫道：
> >>
> >>
> >>
> >> 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@mediatek.com>
> >>> Reviewed-by: CK Hu <ck.hu@mediatek.com>
> >>> ---
> >>> 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.
> >
> > Apply only drm part or only cmdq helpr part, it would be abnormal.
>
> Right it would break DRM driver (if only applied to cmdq) or compilation if only
> applied to DRM.
>
> > Shall we seperate this patch?
>
> After thinking twice, I think we can leave it as it is. If you provide your
> Acked-by I can take it thorugh my tree, if that's OK for you.

This is OK for me, so

Acked-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

>
> Regards,
> Matthias
>
> > Or seperate it but make sure these two patches be in the same tree?
> >
> > Regards,
> > Chun-Kuang.
> >
> >>
> >>> 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
> >>>
> >> _______________________________________________
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