From: Dennis-YC Hsieh <dennis-yc.hsieh@mediatek.com>
To: CK Hu <ck.hu@mediatek.com>
Cc: Rob Herring <robh+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Jassi Brar <jassisinghbrar@gmail.com>,
<linux-kernel@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>,
<devicetree@vger.kernel.org>, <wsd_upstream@mediatek.com>,
Bibby Hsieh <bibby.hsieh@mediatek.com>,
Houlong Wei <houlong.wei@mediatek.com>,
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 13/14] soc: mediatek: cmdq: add wait no clear event function
Date: Thu, 12 Dec 2019 09:42:55 +0800 [thread overview]
Message-ID: <1576114975.17653.16.camel@mtkswgap22> (raw)
In-Reply-To: <1576029887.19653.17.camel@mtksdaap41>
On Wed, 2019-12-11 at 10:04 +0800, CK Hu wrote:
> Hi, Dennis:
>
> On Wed, 2019-11-27 at 09:58 +0800, Dennis YC Hsieh wrote:
> > Add wait no clear event function in cmdq helper functions to wait specific
> > event without clear to 0 after receive it.
> >
> > Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
> > ---
> > drivers/soc/mediatek/mtk-cmdq-helper.c | 15 +++++++++++++++
> > include/linux/soc/mediatek/mtk-cmdq.h | 10 ++++++++++
> > 2 files changed, 25 insertions(+)
> >
> > diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > index 10a9b4481e58..6f270fadfb50 100644
> > --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> > +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > @@ -330,6 +330,21 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event)
> > }
> > EXPORT_SYMBOL(cmdq_pkt_wfe);
> >
> > +int cmdq_pkt_wait_no_clear(struct cmdq_pkt *pkt, u16 event)
> > +{
> > + struct cmdq_instruction inst = { {0} };
> > +
> > + if (event >= CMDQ_MAX_EVENT)
> > + return -EINVAL;
> > +
> > + inst.op = CMDQ_CODE_WFE;
> > + inst.value = CMDQ_WFE_WAIT | CMDQ_WFE_WAIT_VALUE;
> > + inst.event = event;
> > +
> > + return cmdq_pkt_append_command(pkt, inst);
> > +}
> > +EXPORT_SYMBOL(cmdq_pkt_wait_no_clear);
>
> So the wait command has two version, one is wait and then clear event,
> another is wait and not clear event. The name of cmdq_pkt_wfe() is 'wait
> for event', so it's trivial that we think it does not clear event. I've
> three suggestion for this:
>
> 1. Let cmdq_pkt_wfe() wait and not clear event, and
> cmdq_pkt_wfe_clear_event() wait and clear event.
>
> or
> 2. Let cmdq_pkt_wfe() has a parameter to indicate that clear event or
> not after wait.
>
> or
> 3. Let cmdq_pkt_wfe() wait and not clear event, and not provide wait and
> clear event version. For DRM and MDP, I think both just need wait and
> not clear event.
>
> Regards,
> CK
>
ok, I will change cmdq_pkt_wfe wait and not clear, and expose another
cmdq_pkt_wfe_clear_event() api
Regards,
Dennis
>
> > +
> > int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event)
> > {
> > struct cmdq_instruction inst = { {0} };
> > diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
> > index d15d8c941992..40bc61ad8d31 100644
> > --- a/include/linux/soc/mediatek/mtk-cmdq.h
> > +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> > @@ -149,6 +149,16 @@ int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, dma_addr_t addr,
> > */
> > int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event);
> >
> > +/**
> > + * cmdq_pkt_wait_no_clear() - Append wait for event command to the CMDQ packet,
> > + * without update event to 0 after receive it.
> > + * @pkt: the CMDQ packet
> > + * @event: the desired event type to wait
> > + *
> > + * Return: 0 for success; else the error code is returned
> > + */
> > +int cmdq_pkt_wait_no_clear(struct cmdq_pkt *pkt, u16 event);
> > +
> > /**
> > * cmdq_pkt_clear_event() - append clear event command to the CMDQ packet
> > * @pkt: the CMDQ packet
>
>
next prev parent reply other threads:[~2019-12-12 1:43 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-27 1:58 [PATCH v2] support gce on mt6779 platform Dennis YC Hsieh
2019-11-27 1:58 ` [PATCH v2 00/14] " Dennis YC Hsieh
2019-11-27 1:58 ` [PATCH v2 01/14] dt-binding: gce: add gce header file for mt6779 Dennis YC Hsieh
2019-12-05 20:37 ` Rob Herring
2019-11-27 1:58 ` [PATCH v2 02/14] mailbox: cmdq: variablize address shift in platform Dennis YC Hsieh
2019-12-10 1:55 ` CK Hu
2019-12-12 1:03 ` Dennis-YC Hsieh
2019-11-27 1:58 ` [PATCH v2 03/14] mailbox: cmdq: support mt6779 gce platform definition Dennis YC Hsieh
2019-12-10 2:04 ` CK Hu
2019-11-27 1:58 ` [PATCH v2 04/14] mailbox: mediatek: cmdq: clear task in channel before shutdown Dennis YC Hsieh
2019-12-10 2:49 ` CK Hu
2019-12-12 1:13 ` Dennis-YC Hsieh
2019-12-12 1:31 ` CK Hu
2019-12-12 1:51 ` Dennis-YC Hsieh
2019-12-12 2:03 ` CK Hu
2019-12-12 2:20 ` Dennis-YC Hsieh
2019-11-27 1:58 ` [PATCH v2 05/14] arm64: dts: add gce node for mt6779 Dennis YC Hsieh
2019-12-06 4:05 ` Bibby Hsieh
2019-11-27 1:58 ` [PATCH v2 06/14] soc: mediatek: cmdq: return send msg error code Dennis YC Hsieh
2019-12-06 4:02 ` Bibby Hsieh
2019-12-18 8:00 ` Dennis-YC Hsieh
2019-12-18 8:14 ` Bibby Hsieh
2019-11-27 1:58 ` [PATCH v2 07/14] soc: mediatek: cmdq: add assign function Dennis YC Hsieh
2019-12-10 3:24 ` CK Hu
2019-12-12 1:15 ` Dennis-YC Hsieh
2019-11-27 1:58 ` [PATCH v2 08/14] soc: mediatek: cmdq: add write_s function Dennis YC Hsieh
2019-12-10 5:18 ` CK Hu
2019-12-12 1:31 ` Dennis-YC Hsieh
2019-12-10 7:35 ` Bibby Hsieh
2019-12-12 1:31 ` Dennis-YC Hsieh
2019-11-27 1:58 ` [PATCH v2 09/14] soc: mediatek: cmdq: add read_s function Dennis YC Hsieh
2019-12-10 7:55 ` CK Hu
2019-12-12 1:33 ` Dennis-YC Hsieh
2019-11-27 1:58 ` [PATCH v2 10/14] soc: mediatek: cmdq: add write_s value function Dennis YC Hsieh
2019-11-27 1:58 ` [PATCH v2 11/14] soc: mediatek: cmdq: export finalize function Dennis YC Hsieh
2019-12-10 7:50 ` CK Hu
2019-11-27 1:58 ` [PATCH v2 12/14] soc: mediatek: cmdq: add loop function Dennis YC Hsieh
2019-12-11 1:48 ` CK Hu
2019-12-12 1:37 ` Dennis-YC Hsieh
2019-11-27 1:58 ` [PATCH v2 13/14] soc: mediatek: cmdq: add wait no clear event function Dennis YC Hsieh
2019-12-11 2:04 ` CK Hu
2019-12-12 1:42 ` Dennis-YC Hsieh [this message]
2019-11-27 1:58 ` [PATCH v2 14/14] soc: mediatek: cmdq: add set " Dennis YC Hsieh
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