From patchwork Thu Sep 21 05:56:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarkko Nikula X-Patchwork-Id: 13393654 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 32CECCD495C for ; Thu, 21 Sep 2023 05:58:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2RPtJimTpSVTv6JOmF3HaAcF2/G3MkQII33AkBNYTco=; b=VZANIED0Yl4sxf cV3yD7Ps6W0qL8hhkxHWL9Yvu1uRUQ2sJ8zvX/nmRXH+m1QjgcWD752Oam0POmnI4DmzCyhmW1YsJ bS96W9VKDtqqdPHoWS+KgRUJpJaWMIP62Q9c46q7eiHMKgwgCp9TmubwYVderr1cGp/O7oevEL78n /kYqkEmhRBK2NkHd5RGillG7QKRIDl8W5NJU6YR0MkXhmTowshhpFPf0sMe068YahjTgvPRQQ1KiR kNE1MEqNaHj0YpUopzOzoobaW6PV0ctuCkwxKajUNrPTJemOcr6jjg/8eUP5HCLdIOS+Fae4ZZDMi uSFhsDg5r39r2IoS8XDg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qjChX-005DvE-2o; Thu, 21 Sep 2023 05:58:11 +0000 Received: from mgamail.intel.com ([192.55.52.151]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qjChU-005DrZ-2a for linux-i3c@lists.infradead.org; Thu, 21 Sep 2023 05:58:10 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695275888; x=1726811888; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=hP+81XG99C4zI6YFJe+jxjjbNgZrxEATM1Ajkd2nx5Q=; b=dX4dfg8kE5kZN9gIMqruFw11V4ydhVFFDiqCBqnN4Dw7fo73H9QbkEuB LaRBx7AQLHupl8FkMcJi9iCWq4l6a/JVnXbF6mY9XiICj3HMp4KCGkoqg JDZQS/TT1kPGwULZU6D7T9S+4OzEhWuapYktWXMHs0Xc8/vHRf1zwqMxC //7WTGNN/mzgJAj/O7oh9lO6QB+LtXOIoLD0pKNwLVgyEaU1+CFdkhdyY B5/AxoURBANeZ87uyMIySO6hdtJbspP3F/vZKZFFgldimhVfzi8Jcx68S 2DU51bNKHTSnhfVAR9xGIPCZwvMVMYQ3aj36k3W43yqfCV4F3lI22mCo2 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="360678494" X-IronPort-AV: E=Sophos;i="6.03,164,1694761200"; d="scan'208";a="360678494" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2023 22:58:08 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10839"; a="1077771267" X-IronPort-AV: E=Sophos;i="6.03,164,1694761200"; d="scan'208";a="1077771267" Received: from mylly.fi.intel.com (HELO mylly.fi.intel.com.) ([10.237.72.152]) by fmsmga005.fm.intel.com with ESMTP; 20 Sep 2023 22:58:01 -0700 From: Jarkko Nikula To: Alexandre Belloni Cc: linux-i3c@lists.infradead.org, Jarkko Nikula Subject: [PATCH 06/12] i3c: mipi-i3c-hci: Set ring start request together with enable Date: Thu, 21 Sep 2023 08:56:58 +0300 Message-Id: <20230921055704.1087277-7-jarkko.nikula@linux.intel.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230921055704.1087277-1-jarkko.nikula@linux.intel.com> References: <20230921055704.1087277-1-jarkko.nikula@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230920_225808_870009_C4F017EC X-CRM114-Status: UNSURE ( 8.07 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org Set ring start request together with ring enable in hci_dma_init(). This causes the ring abort request in hci_dma_dequeue_xfer() will raise the INTR_RING_OP (RING_OP_STAT in MIPI I3C HCI specification) interrupt in the RH_INTR_STATUS register. Signed-off-by: Jarkko Nikula --- drivers/i3c/master/mipi-i3c-hci/dma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/i3c/master/mipi-i3c-hci/dma.c b/drivers/i3c/master/mipi-i3c-hci/dma.c index a28ff177022c..df569d1351be 100644 --- a/drivers/i3c/master/mipi-i3c-hci/dma.c +++ b/drivers/i3c/master/mipi-i3c-hci/dma.c @@ -325,7 +325,8 @@ static int hci_dma_init(struct i3c_hci *hci) rh_reg_write(INTR_SIGNAL_ENABLE, regval); ring_ready: - rh_reg_write(RING_CONTROL, RING_CTRL_ENABLE); + rh_reg_write(RING_CONTROL, RING_CTRL_ENABLE | + RING_CTRL_RUN_STOP); } regval = FIELD_PREP(MAX_HEADER_COUNT, rings->total);