linux-kernel - Re: [PATCH v3 8/9] soc: mediatek: cmdq: add clear option in cmdq_pkt

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Message-ID: <1600705544.26565.0.camel@mtkswgap22>
Date:   Tue, 22 Sep 2020 00:25:44 +0800
From:   Dennis-YC Hsieh <dennis-yc.hsieh@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>
CC:     Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, CK Hu <ck.hu@...iatek.com>,
        Bibby Hsieh <bibby.hsieh@...iatek.com>,
        Houlong Wei <houlong.wei@...iatek.com>,
        <dri-devel@...ts.freedesktop.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <wsd_upstream@...iatek.com>,
        HS Liao <hs.liao@...iatek.com>
Subject: Re: [PATCH v3 8/9] soc: mediatek: cmdq: add clear option in
 cmdq_pkt_wfe api

Hi Matthias,


On Mon, 2020-09-21 at 18:19 +0200, Matthias Brugger wrote:
> 
> On 07/07/2020 17:45, Dennis YC Hsieh wrote:
> > Add clear parameter to let client decide if
> > event should be clear to 0 after GCE receive it.
> > 
> > Change since v2:
> > - Keep behavior in drm crtc driver and
> >    separate bug fix code into another patch.
> 
> This, should go...
> 
> > 
> > Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@...iatek.com>
> > ---
> 
> ...here :)
> 
> I fixed to commit message and pushed the patch to v5.9-next/soc

got it, thanks a lot


Regards,
Dennis

> 
> Thanks!
> 
> >   drivers/gpu/drm/mediatek/mtk_drm_crtc.c  |    2 +-
> >   drivers/soc/mediatek/mtk-cmdq-helper.c   |    5 +++--
> >   include/linux/mailbox/mtk-cmdq-mailbox.h |    3 +--
> >   include/linux/soc/mediatek/mtk-cmdq.h    |    5 +++--
> >   4 files changed, 8 insertions(+), 7 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > index ec6c9ffbf35e..c84e7a14d4a8 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
> > @@ -490,7 +490,7 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
> >   		mbox_flush(mtk_crtc->cmdq_client->chan, 2000);
> >   		cmdq_handle = cmdq_pkt_create(mtk_crtc->cmdq_client, PAGE_SIZE);
> >   		cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
> > -		cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event);
> > +		cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, true);
> >   		mtk_crtc_ddp_config(crtc, cmdq_handle);
> >   		cmdq_pkt_finalize(cmdq_handle);
> >   		cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
> > diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > index d55dc3296105..505651b0d715 100644
> > --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> > +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > @@ -316,15 +316,16 @@ int cmdq_pkt_write_s_mask_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx,
> >   }
> >   EXPORT_SYMBOL(cmdq_pkt_write_s_mask_value);
> >   
> > -int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event)
> > +int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event, bool clear)
> >   {
> >   	struct cmdq_instruction inst = { {0} };
> > +	u32 clear_option = clear ? CMDQ_WFE_UPDATE : 0;
> >   
> >   	if (event >= CMDQ_MAX_EVENT)
> >   		return -EINVAL;
> >   
> >   	inst.op = CMDQ_CODE_WFE;
> > -	inst.value = CMDQ_WFE_OPTION;
> > +	inst.value = CMDQ_WFE_OPTION | clear_option;
> >   	inst.event = event;
> >   
> >   	return cmdq_pkt_append_command(pkt, inst);
> > diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
> > index efbd8a9eb2d1..d5a983d65f05 100644
> > --- a/include/linux/mailbox/mtk-cmdq-mailbox.h
> > +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
> > @@ -28,8 +28,7 @@
> >    * bit 16-27: update value
> >    * bit 31: 1 - update, 0 - no update
> >    */
> > -#define CMDQ_WFE_OPTION			(CMDQ_WFE_UPDATE | CMDQ_WFE_WAIT | \
> > -					CMDQ_WFE_WAIT_VALUE)
> > +#define CMDQ_WFE_OPTION			(CMDQ_WFE_WAIT | CMDQ_WFE_WAIT_VALUE)
> >   
> >   /** cmdq event maximum */
> >   #define CMDQ_MAX_EVENT			0x3ff
> > diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
> > index 34354e952f60..960704d75994 100644
> > --- a/include/linux/soc/mediatek/mtk-cmdq.h
> > +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> > @@ -182,11 +182,12 @@ int cmdq_pkt_write_s_mask_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx,
> >   /**
> >    * cmdq_pkt_wfe() - append wait for event command to the CMDQ packet
> >    * @pkt:	the CMDQ packet
> > - * @event:	the desired event type to "wait and CLEAR"
> > + * @event:	the desired event type to wait
> > + * @clear:	clear event or not after event arrive
> >    *
> >    * Return: 0 for success; else the error code is returned
> >    */
> > -int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event);
> > +int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event, bool clear);
> >   
> >   /**
> >    * cmdq_pkt_clear_event() - append clear event command to the CMDQ packet
> >