From patchwork Mon Jul 29 07:01:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bibby Hsieh X-Patchwork-Id: 11063311 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D0A56746 for ; Mon, 29 Jul 2019 07:08:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BFD251FF62 for ; Mon, 29 Jul 2019 07:08:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B43B01FFBE; Mon, 29 Jul 2019 07:08:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 599E11FF62 for ; Mon, 29 Jul 2019 07:08:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1vTWI64DUmLaI2l7Znz7JliX22xLBo6j99cwdv1p68A=; b=FS3jK8rJga1vDL fbPlF02jeC5iqGbzcL2bdPEriIesgt3tZkndwVFocgBZumngYUMfav/JRyD5tRtJqTbi8K4o2tbpJ m2K3WkQLoY7wsegp9l461eQ4bRvZuI8w9CC3+RazpeCTgNGT3qFaUdg6Yxle1+ZKu8qgUzsSoBNAN luVZnOARHzlLMf4lPibHTUcf7dO0azLYxdGnklgU2qaJ7mBQZpcrI2Q0loZGT6fkdq4TVWm9Ysf/t sVm/bWozxuMJAvpJf/Fitu7RHcnGjHQffJwr46bPpnSjpavCCebnX74nSuFYSng3NorERTClCfyDr DiyLtBXvtzEp3QFPkCTg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hrzly-0001JN-NY; Mon, 29 Jul 2019 07:08:42 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hrzfx-0005bT-4p; Mon, 29 Jul 2019 07:02:30 +0000 X-UUID: bacf105d9d2446b1ab2326e84ee72c7d-20190728 X-UUID: bacf105d9d2446b1ab2326e84ee72c7d-20190728 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1317639078; Sun, 28 Jul 2019 23:01:12 -0800 Received: from MTKMBS07N2.mediatek.inc (172.21.101.141) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 29 Jul 2019 00:01:11 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 29 Jul 2019 15:01:09 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 29 Jul 2019 15:01:09 +0800 From: Bibby Hsieh To: Jassi Brar , Matthias Brugger , Rob Herring , CK HU Subject: [PATCH v11 06/12] soc: mediatek: cmdq: clear the event in cmdq initial flow Date: Mon, 29 Jul 2019 15:01:00 +0800 Message-ID: <20190729070106.9332-7-bibby.hsieh@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190729070106.9332-1-bibby.hsieh@mediatek.com> References: <20190729070106.9332-1-bibby.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-20190729_000229_373633_A6785A84 X-CRM114-Status: UNSURE ( 9.73 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@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, Nicolas Boichat , Philipp Zabel , srv_heupstream@mediatek.com, Daoyuan Huang , Sascha Hauer , linux-kernel@vger.kernel.org, Dennis-YC Hsieh , linux-mediatek@lists.infradead.org, Houlong Wei , Sascha Hauer , Jiaguang Zhang , Bibby Hsieh , linux-arm-kernel@lists.infradead.org, ginny.chen@mediatek.com Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP GCE hardware stored event information in own internal sysram, if the initial value in those sysram is not zero value it will cause a situation that gce can wait the event immediately after client ask gce to wait event but not really trigger the corresponding hardware. In order to make sure that the wait event function is exactly correct, we need to clear the sysram value in cmdq initial flow. Fixes: 623a6143a845 ("mailbox: mediatek: Add Mediatek CMDQ driver") Signed-off-by: Bibby Hsieh Reviewed-by: CK Hu --- drivers/mailbox/mtk-cmdq-mailbox.c | 5 +++++ include/linux/mailbox/mtk-cmdq-mailbox.h | 2 ++ include/linux/soc/mediatek/mtk-cmdq.h | 3 --- 3 files changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c index 69daaadc3a5f..9a6ce9f5a7db 100644 --- a/drivers/mailbox/mtk-cmdq-mailbox.c +++ b/drivers/mailbox/mtk-cmdq-mailbox.c @@ -21,6 +21,7 @@ #define CMDQ_NUM_CMD(t) (t->cmd_buf_size / CMDQ_INST_SIZE) #define CMDQ_CURR_IRQ_STATUS 0x10 +#define CMDQ_SYNC_TOKEN_UPDATE 0x68 #define CMDQ_THR_SLOT_CYCLES 0x30 #define CMDQ_THR_BASE 0x100 #define CMDQ_THR_SIZE 0x80 @@ -104,8 +105,12 @@ static void cmdq_thread_resume(struct cmdq_thread *thread) static void cmdq_init(struct cmdq *cmdq) { + int i; + WARN_ON(clk_enable(cmdq->clock) < 0); writel(CMDQ_THR_ACTIVE_SLOT_CYCLES, cmdq->base + CMDQ_THR_SLOT_CYCLES); + for (i = 0; i <= CMDQ_MAX_EVENT; i++) + writel(i, cmdq->base + CMDQ_SYNC_TOKEN_UPDATE); clk_disable(cmdq->clock); } diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index ccb73422c2fa..911475da7a53 100644 --- a/include/linux/mailbox/mtk-cmdq-mailbox.h +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h @@ -19,6 +19,8 @@ #define CMDQ_WFE_UPDATE BIT(31) #define CMDQ_WFE_WAIT BIT(15) #define CMDQ_WFE_WAIT_VALUE 0x1 +/** cmdq event maximum */ +#define CMDQ_MAX_EVENT 0x3ff /* * CMDQ_CODE_MASK: diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index 54ade13a9b15..4e8899972db4 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -13,9 +13,6 @@ #define CMDQ_NO_TIMEOUT 0xffffffffu -/** cmdq event maximum */ -#define CMDQ_MAX_EVENT 0x3ff - struct cmdq_pkt; struct cmdq_client {