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-0700 (PDT) Subject: Re: [PATCH v1 10/11] soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api To: Dennis YC Hsieh , Philipp Zabel , David Airlie , Daniel Vetter , CK Hu , Bibby Hsieh , Houlong Wei Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, wsd_upstream@mediatek.com, HS Liao References: <1592749115-24158-1-git-send-email-dennis-yc.hsieh@mediatek.com> <1592749115-24158-11-git-send-email-dennis-yc.hsieh@mediatek.com> From: Matthias Brugger Autocrypt: addr=matthias.bgg@gmail.com; prefer-encrypt=mutual; keydata= mQINBFP1zgUBEAC21D6hk7//0kOmsUrE3eZ55kjc9DmFPKIz6l4NggqwQjBNRHIMh04BbCMY fL3eT7ZsYV5nur7zctmJ+vbszoOASXUpfq8M+S5hU2w7sBaVk5rpH9yW8CUWz2+ZpQXPJcFa OhLZuSKB1F5JcvLbETRjNzNU7B3TdS2+zkgQQdEyt7Ij2HXGLJ2w+yG2GuR9/iyCJRf10Okq gTh//XESJZ8S6KlOWbLXRE+yfkKDXQx2Jr1XuVvM3zPqH5FMg8reRVFsQ+vI0b+OlyekT/Xe 0Hwvqkev95GG6x7yseJwI+2ydDH6M5O7fPKFW5mzAdDE2g/K9B4e2tYK6/rA7Fq4cqiAw1+u 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jzi+DzD9cvj2K6eD5j5kcKJJQactXqfJvF1Eb+OnxlB1BCLE8D1rNkPO5O742Mq3MgDmq19l +abzEL6QDAAxn9md8KwrA3RtucNh87cHlDXfUBKa7SRvBjTczDg+HEPNk2u3hrz1j3l2rliQ y1UfYx7Vk/TrdwUIJgKS8QAr8Lw9WuvY2hSqL9vEjx8VAkPWNWPwrQ== Message-ID: <8b469701-2295-2cb5-1b60-8681322db678@gmail.com> Date: Mon, 22 Jun 2020 13:19:52 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <1592749115-24158-11-git-send-email-dennis-yc.hsieh@mediatek.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 21/06/2020 16:18, 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 > Reviewed-by: CK Hu > --- > 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..a065b3a412cf 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, false); This does not set CMDQ_WFE_UPDATE while the old code did. Is this a bug fix or a bug in the code? If it's a fix, please provide a fixes tag. Thanks, Matthias > 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 009f86ae72c6..13f78c9b5901 100644 > --- a/drivers/soc/mediatek/mtk-cmdq-helper.c > +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c > @@ -315,15 +315,16 @@ 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 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 18364d81e8f7..4b5f5d154bad 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 >