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Wed, 04 Mar 2020 16:50:01 -0800 Received: from mtkmbs05n2.mediatek.inc (172.21.101.140) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 4 Mar 2020 16:51:19 -0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs05n2.mediatek.inc (172.21.101.140) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 5 Mar 2020 08:48:57 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 5 Mar 2020 08:49:13 +0800 Message-ID: <1583369398.28558.1.camel@mtkswgap22> Subject: Re: [PATCH v4 12/13] soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api From: Dennis-YC Hsieh To: CK Hu Date: Thu, 5 Mar 2020 08:49:58 +0800 In-Reply-To: <1583291126.1062.7.camel@mtksdaap41> References: <1583233125-7827-1-git-send-email-dennis-yc.hsieh@mediatek.com> <1583233125-7827-13-git-send-email-dennis-yc.hsieh@mediatek.com> <1583291126.1062.7.camel@mtksdaap41> X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200304_165011_588630_01B53CDE X-CRM114-Status: GOOD ( 19.88 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Daniel Vetter , wsd_upstream@mediatek.com, David Airlie , Jassi Brar , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, HS Liao , Rob Herring , linux-mediatek@lists.infradead.org, Houlong Wei , Philipp Zabel , Matthias Brugger , Bibby Hsieh , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi CK, Thanks for your comment. On Wed, 2020-03-04 at 11:05 +0800, CK Hu wrote: > Hi, Dennis: > > On Tue, 2020-03-03 at 18:58 +0800, Dennis YC Hsieh wrote: > > Add clear parameter to let client decide if > > event should be clear to 0 after GCE receive it. > > > > Signed-off-by: Dennis YC Hsieh > > --- > > 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 7daaabc26eb1..4916a7f75d23 100644 > > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > > @@ -488,7 +488,7 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) > > if (mtk_crtc->cmdq_client) { > > 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); > > There is always clear event before wait event, so there is no need to > clear event after event is waited. So this should be > > cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false); Ok, will fix in next version, thanks. Regards, Dennis > > Regards, > CK > > > 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 f27c67034880..4f767198d0fc 100644 > > --- a/drivers/soc/mediatek/mtk-cmdq-helper.c > > +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c > > @@ -295,15 +295,16 @@ int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, > > } > > EXPORT_SYMBOL(cmdq_pkt_write_s_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 3f6bc0dfd5da..42d2a30e6a70 100644 > > --- a/include/linux/mailbox/mtk-cmdq-mailbox.h > > +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h > > @@ -27,8 +27,7 @@ > > * 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 1a6c56f3bec1..d63749440697 100644 > > --- a/include/linux/soc/mediatek/mtk-cmdq.h > > +++ b/include/linux/soc/mediatek/mtk-cmdq.h > > @@ -152,11 +152,12 @@ int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, u16 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 > > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel