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 Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 0A1D6C3DA4A for ; Thu, 8 Aug 2024 07:31:56 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256 header.s=gm1 header.b=HhHKjZTN; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4Wfdyy5MT5z3dLY for ; Thu, 8 Aug 2024 17:31:54 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256 header.s=gm1 header.b=HhHKjZTN; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=bootlin.com (client-ip=217.70.183.198; helo=relay6-d.mail.gandi.net; envelope-from=herve.codina@bootlin.com; receiver=lists.ozlabs.org) Received: from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net [217.70.183.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4WfdX33080z3dK1 for ; Thu, 8 Aug 2024 17:12:03 +1000 (AEST) Received: by mail.gandi.net (Postfix) with ESMTPA id 51B8AC000B; Thu, 8 Aug 2024 07:12:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1723101120; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ns1shNAo8zEhYUmPszlirWDSVtM9okYPzpFYT+pVz24=; b=HhHKjZTN3TIWxgS9BA+NzIJH9M0Nw1IJKYJ3QvoNPHSduDj0Na/SmlST0OLz7qYRiuX2PD 3HOyFQiPPMnFnEufReTfQuPQ2U/CuW6FKWjpxr8SwTjljWAWRjqzP3yuuuft75lyzgTQK7 zKGxCjYi09J7rP3bG2Vv3HE8xqzOzdHIYPz6okN6VIqVj6bJvoXu1eb4OHekfsSOBO7tY1 idbrXx8U7sQGpegZ7pmXz9h+CR/E9IkkqTjoD4bhjQgAqgZnJJ3Qv8PApwBMa/VrkfuSYC 6OU/Sn737ElhQ8S8GKpYkimjX3CJCf2fHuQKpgZM8vl+MO6sJT6wG0sr8wJCjQ== From: Herve Codina To: Herve Codina , Christophe Leroy , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Qiang Zhao , Li Yang , Mark Brown Subject: [PATCH v2 29/36] soc: fsl: cpm1: qmc: Handle RPACK initialization Date: Thu, 8 Aug 2024 09:11:22 +0200 Message-ID: <20240808071132.149251-30-herve.codina@bootlin.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240808071132.149251-1-herve.codina@bootlin.com> References: <20240808071132.149251-1-herve.codina@bootlin.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-GND-Sasl: herve.codina@bootlin.com X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Petazzoni , devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Current code handles the CPM1 version of QMC, RPACK does not need to be initialized. This is not the case in the QUICC Engine (QE) version. In preparation of the support for QE, initialize the RPACK register when the receiver is initialized and each time it is restarted. This additional RPACK initialization has no impact in the CPM1 version of QMC. Signed-off-by: Herve Codina --- drivers/soc/fsl/qe/qmc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c index 272da250a763..63af2608c3cd 100644 --- a/drivers/soc/fsl/qe/qmc.c +++ b/drivers/soc/fsl/qe/qmc.c @@ -221,6 +221,7 @@ struct qmc_data { u32 zistate; /* Initial ZISTATE value */ u32 zdstate_hdlc; /* Initial ZDSTATE value (HDLC mode) */ u32 zdstate_transp; /* Initial ZDSTATE value (Transparent mode) */ + u32 rpack; /* Initial RPACK value */ }; struct qmc { @@ -552,6 +553,7 @@ int qmc_chan_read_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length, /* Restart receiver if needed */ if (chan->is_rx_halted && !chan->is_rx_stopped) { /* Restart receiver */ + qmc_write32(chan->s_param + QMC_SPE_RPACK, chan->qmc->data->rpack); qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, chan->mode == QMC_TRANSPARENT ? chan->qmc->data->zdstate_transp : @@ -980,6 +982,7 @@ static int qmc_chan_start_rx(struct qmc_chan *chan) } /* Restart the receiver */ + qmc_write32(chan->s_param + QMC_SPE_RPACK, chan->qmc->data->rpack); qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, chan->mode == QMC_TRANSPARENT ? chan->qmc->data->zdstate_transp : @@ -1405,6 +1408,7 @@ static int qmc_setup_chan(struct qmc *qmc, struct qmc_chan *chan) qmc_write32(chan->s_param + QMC_SPE_TSTATE, chan->qmc->data->tstate); qmc_write32(chan->s_param + QMC_SPE_RSTATE, chan->qmc->data->rstate); qmc_write32(chan->s_param + QMC_SPE_ZISTATE, chan->qmc->data->zistate); + qmc_write32(chan->s_param + QMC_SPE_RPACK, chan->qmc->data->rpack); if (chan->mode == QMC_TRANSPARENT) { qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, chan->qmc->data->zdstate_transp); qmc_write16(chan->s_param + QMC_SPE_TMRBLR, 60); @@ -1544,6 +1548,8 @@ static void qmc_irq_gint(struct qmc *qmc) /* Restart the receiver if needed */ spin_lock_irqsave(&chan->rx_lock, flags); if (chan->rx_pending && !chan->is_rx_stopped) { + qmc_write32(chan->s_param + QMC_SPE_RPACK, + chan->qmc->data->rpack); qmc_write32(chan->s_param + QMC_SPE_ZDSTATE, chan->mode == QMC_TRANSPARENT ? chan->qmc->data->zdstate_transp : @@ -1810,6 +1816,7 @@ static const struct qmc_data qmc_data_cpm1 = { .zistate = 0x00000100, .zdstate_hdlc = 0x00000080, .zdstate_transp = 0x18000080, + .rpack = 0x00000000, }; static const struct of_device_id qmc_id_table[] = { -- 2.45.0