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Mon, 21 Sep 2020 09:16:03 -0700 (PDT) Received: from ziggy.stardust ([213.195.113.201]) by smtp.gmail.com with ESMTPSA id t17sm22013545wrx.82.2020.09.21.09.16.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 21 Sep 2020 09:16:03 -0700 (PDT) Subject: Re: [PATCH v3 4/9] soc: mediatek: cmdq: add read_s function To: Dennis YC Hsieh , Philipp Zabel , David Airlie , Daniel Vetter , CK Hu , Bibby Hsieh , Houlong Wei References: <1594136714-11650-1-git-send-email-dennis-yc.hsieh@mediatek.com> <1594136714-11650-5-git-send-email-dennis-yc.hsieh@mediatek.com> From: Matthias Brugger Message-ID: <89ff84a9-dd22-536b-7a41-8a802df97868@gmail.com> Date: Mon, 21 Sep 2020 18:16:01 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: <1594136714-11650-5-git-send-email-dennis-yc.hsieh@mediatek.com> Content-Language: en-US X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, HS Liao , linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 07/07/2020 17:45, Dennis YC Hsieh wrote: > Add read_s function in cmdq helper functions which support read value from > register or dma physical address into gce internal register. > > Signed-off-by: Dennis YC Hsieh Now pushed to v5.9-next/soc Thanks! > --- > drivers/soc/mediatek/mtk-cmdq-helper.c | 15 +++++++++++++++ > include/linux/mailbox/mtk-cmdq-mailbox.h | 1 + > include/linux/soc/mediatek/mtk-cmdq.h | 12 ++++++++++++ > 3 files changed, 28 insertions(+) > > diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c > index 550e9e7e3ff2..ed9f5e63c195 100644 > --- a/drivers/soc/mediatek/mtk-cmdq-helper.c > +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c > @@ -227,6 +227,21 @@ int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys, > } > EXPORT_SYMBOL(cmdq_pkt_write_mask); > > +int cmdq_pkt_read_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, u16 addr_low, > + u16 reg_idx) > +{ > + struct cmdq_instruction inst = {}; > + > + inst.op = CMDQ_CODE_READ_S; > + inst.dst_t = CMDQ_REG_TYPE; > + inst.sop = high_addr_reg_idx; > + inst.reg_dst = reg_idx; > + inst.src_reg = addr_low; > + > + return cmdq_pkt_append_command(pkt, inst); > +} > +EXPORT_SYMBOL(cmdq_pkt_read_s); > + > int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, > u16 addr_low, u16 src_reg_idx) > { > diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h > index 90d1d8e64412..efbd8a9eb2d1 100644 > --- a/include/linux/mailbox/mtk-cmdq-mailbox.h > +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h > @@ -60,6 +60,7 @@ enum cmdq_code { > CMDQ_CODE_JUMP = 0x10, > CMDQ_CODE_WFE = 0x20, > CMDQ_CODE_EOC = 0x40, > + CMDQ_CODE_READ_S = 0x80, > CMDQ_CODE_WRITE_S = 0x90, > CMDQ_CODE_WRITE_S_MASK = 0x91, > CMDQ_CODE_LOGIC = 0xa0, > diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h > index 53230341bf94..cd7ec714344e 100644 > --- a/include/linux/soc/mediatek/mtk-cmdq.h > +++ b/include/linux/soc/mediatek/mtk-cmdq.h > @@ -104,6 +104,18 @@ struct cmdq_client *cmdq_mbox_create(struct device *dev, int index, > int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys, > u16 offset, u32 value, u32 mask); > > +/* > + * cmdq_pkt_read_s() - append read_s command to the CMDQ packet > + * @pkt: the CMDQ packet > + * @high_addr_reg_idx: internal register ID which contains high address of pa > + * @addr_low: low address of pa > + * @reg_idx: the CMDQ internal register ID to cache read data > + * > + * Return: 0 for success; else the error code is returned > + */ > +int cmdq_pkt_read_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, u16 addr_low, > + u16 reg_idx); > + > /** > * cmdq_pkt_write_s() - append write_s command to the CMDQ packet > * @pkt: the CMDQ packet > _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel