From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 85E6DCA9EBC for ; Thu, 24 Oct 2019 05:28:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 648DD2166E for ; Thu, 24 Oct 2019 05:28:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2437500AbfJXF1l (ORCPT ); Thu, 24 Oct 2019 01:27:41 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:16107 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S2437483AbfJXF1l (ORCPT ); Thu, 24 Oct 2019 01:27:41 -0400 X-UUID: 0e8cd25ca29a44f7ae721eeffc9bd8b2-20191024 X-UUID: 0e8cd25ca29a44f7ae721eeffc9bd8b2-20191024 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 640199279; Thu, 24 Oct 2019 13:27:35 +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; Thu, 24 Oct 2019 13:27:32 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 24 Oct 2019 13:27:33 +0800 From: Bibby Hsieh To: Jassi Brar , Matthias Brugger , Rob Herring , CK HU CC: , , , , , Nicolas Boichat , Dennis-YC Hsieh , Houlong Wei , Bibby Hsieh Subject: [PATCH v16 3/5] soc: mediatek: cmdq: add polling function Date: Thu, 24 Oct 2019 13:27:30 +0800 Message-ID: <20191024052732.7767-4-bibby.hsieh@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20191024052732.7767-1-bibby.hsieh@mediatek.com> References: <20191024052732.7767-1-bibby.hsieh@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org add polling function in cmdq helper functions Signed-off-by: Bibby Hsieh --- drivers/soc/mediatek/mtk-cmdq-helper.c | 35 ++++++++++++++++++++++++ include/linux/mailbox/mtk-cmdq-mailbox.h | 1 + include/linux/soc/mediatek/mtk-cmdq.h | 32 ++++++++++++++++++++++ 3 files changed, 68 insertions(+) diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 11bfcc150ebd..8743c6ae7ac5 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -214,6 +214,41 @@ int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event) } EXPORT_SYMBOL(cmdq_pkt_clear_event); +int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value) +{ + struct cmdq_instruction inst = { {0} }; + int err; + + inst.op = CMDQ_CODE_POLL; + inst.value = value; + inst.offset = offset; + inst.subsys = subsys; + err = cmdq_pkt_append_command(pkt, inst); + + return err; +} +EXPORT_SYMBOL(cmdq_pkt_poll); + +int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value, u32 mask) +{ + struct cmdq_instruction inst = { {0} }; + int err; + + inst.op = CMDQ_CODE_MASK; + inst.mask = ~mask; + err = cmdq_pkt_append_command(pkt, inst); + if (err < 0) + return err; + + offset = offset | 0x1; + err = cmdq_pkt_poll(pkt, subsys, offset, value); + + return err; +} +EXPORT_SYMBOL(cmdq_pkt_poll_mask); + static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) { struct cmdq_instruction inst = { {0} }; diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index 678760548791..a4dc45fbec0a 100644 --- a/include/linux/mailbox/mtk-cmdq-mailbox.h +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h @@ -55,6 +55,7 @@ enum cmdq_code { CMDQ_CODE_MASK = 0x02, CMDQ_CODE_WRITE = 0x04, + CMDQ_CODE_POLL = 0x08, CMDQ_CODE_JUMP = 0x10, CMDQ_CODE_WFE = 0x20, CMDQ_CODE_EOC = 0x40, diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index 9618debb9ceb..92bd5b5c6341 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -99,6 +99,38 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event); */ int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event); +/** + * cmdq_pkt_poll() - Append polling command to the CMDQ packet, ask GCE to + * execute an instruction that wait for a specified + * hardware register to check for the value w/o mask. + * All GCE hardware threads will be blocked by this + * instruction. + * @pkt: the CMDQ packet + * @subsys: the CMDQ sub system code + * @offset: register offset from CMDQ sub system + * @value: the specified target register value + * + * Return: 0 for success; else the error code is returned + */ +int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value); + +/** + * cmdq_pkt_poll_mask() - Append polling command to the CMDQ packet, ask GCE to + * execute an instruction that wait for a specified + * hardware register to check for the value w/ mask. + * All GCE hardware threads will be blocked by this + * instruction. + * @pkt: the CMDQ packet + * @subsys: the CMDQ sub system code + * @offset: register offset from CMDQ sub system + * @value: the specified target register value + * @mask: the specified target register mask + * + * Return: 0 for success; else the error code is returned + */ +int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys, + u16 offset, u32 value, u32 mask); /** * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ * packet and call back at the end of done packet -- 2.18.0