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Tue, 26 Nov 2019 17:59:13 -0800 Received: from mtkmbs08n1.mediatek.inc (172.21.101.55) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 26 Nov 2019 17:59:19 -0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 27 Nov 2019 09:58:31 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 27 Nov 2019 09:58:19 +0800 From: Dennis YC Hsieh To: Rob Herring , Matthias Brugger , Jassi Brar Subject: [PATCH v2 12/14] soc: mediatek: cmdq: add loop function Date: Wed, 27 Nov 2019 09:58:55 +0800 Message-ID: <1574819937-6246-14-git-send-email-dennis-yc.hsieh@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1574819937-6246-1-git-send-email-dennis-yc.hsieh@mediatek.com> References: <1574819937-6246-1-git-send-email-dennis-yc.hsieh@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191126_175916_978029_05916CB6 X-CRM114-Status: GOOD ( 11.04 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines 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: devicetree@vger.kernel.org, wsd_upstream@mediatek.com, linux-kernel@vger.kernel.org, Houlong Wei , Dennis YC Hsieh , linux-mediatek@lists.infradead.org, Bibby Hsieh , CK Hu , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add finalize loop function in cmdq helper functions which loop whole pkt in gce hardware thread without cpu operation. Signed-off-by: Dennis YC Hsieh --- drivers/soc/mediatek/mtk-cmdq-helper.c | 22 ++++++++++++++++++++++ include/linux/soc/mediatek/mtk-cmdq.h | 8 ++++++++ 2 files changed, 30 insertions(+) diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 38e0c13e1922..10a9b4481e58 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -414,6 +414,28 @@ int cmdq_pkt_finalize(struct cmdq_pkt *pkt) } EXPORT_SYMBOL(cmdq_pkt_finalize); +int cmdq_pkt_finalize_loop(struct cmdq_pkt *pkt) +{ + struct cmdq_client *cl = pkt->cl; + struct cmdq_instruction inst = { {0} }; + int err; + + /* insert EOC and generate IRQ for each command iteration */ + inst.op = CMDQ_CODE_EOC; + err = cmdq_pkt_append_command(pkt, inst); + if (err < 0) + return err; + + /* JUMP abaolute to begin */ + inst.op = CMDQ_CODE_JUMP; + inst.offset = 1; + inst.value = pkt->pa_base >> cmdq_mbox_shift(cl->chan); + err = cmdq_pkt_append_command(pkt, inst); + + return err; +} +EXPORT_SYMBOL(cmdq_pkt_finalize_loop); + static void cmdq_pkt_flush_async_cb(struct cmdq_cb_data data) { struct cmdq_pkt *pkt = (struct cmdq_pkt *)data.data; diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index 998bc90f9da9..d15d8c941992 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -212,6 +212,14 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value); */ int cmdq_pkt_finalize(struct cmdq_pkt *pkt); +/** + * cmdq_pkt_finalize_loop() - Append EOC and jump command to loop pkt. + * @pkt: the CMDQ packet + * + * Return: 0 for success; else the error code is returned + */ +int cmdq_pkt_finalize_loop(struct cmdq_pkt *pkt); + /** * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ * packet and call back at the end of done packet