From patchwork Tue Nov 28 14:08:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herve Codina X-Patchwork-Id: 13471201 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 56F74C4167B for ; Tue, 28 Nov 2023 14:09:34 +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=Ml28JBvA5uGc3PQH+ZEoC/V9XXvvTs0AR4HrefE5ays=; b=0ztNXGEorX7/Le UH1lpus6Fg+CPgiuXR1i6qA0O6P0UPkBf2+mRWz6+CIoTcZ/Talzk3qaDvwcgKzfLPLMTQLy/oC1v pC5vV3E+FZLbwRv6Wxn41/rw4V81IM62lzqMHeDVQissA4v7QjAhS0nahcHKLB8Hs883nKm7nQ7xc z4a5ZADiwIlMX/UVO9ulW4+2W0xDfrd0b59OSPB93stZF1cxXMdqf8Zu3ejKSc9qgEWdNuZ870gZU tBSd9tqXWonUhQXOHJsmAxfG+8WjH1uGMxf+JegK/gJaf98Wh12SKiJIGFaHfoucx1rrmAReBXNNw crBlTB2292xH7bX0kGcQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1r7ylm-005SBb-0D; Tue, 28 Nov 2023 14:08:58 +0000 Received: from relay3-d.mail.gandi.net ([217.70.183.195]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1r7ylV-005Rym-05 for linux-arm-kernel@lists.infradead.org; Tue, 28 Nov 2023 14:08:42 +0000 Received: by mail.gandi.net (Postfix) with ESMTPA id D33656000B; Tue, 28 Nov 2023 14:08:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1701180519; 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=qB5PQIsjg4vNdEztMunF8K802tA8yt3Tver1m2WVF68=; b=ed6RUCNm7a7brdsSg9wc5Qc1Y1ptEjdyXGcpjOjS8tt9TPY7J1Zm00ocuG+1r+Aj5mjkLn 8k01XwTM9iM8kgXPBgG1oz/1iVQ95LdYUxkaogcDe9qI5yKtssOfA9kKjrqAZAb4O7wQUD d1/mkVaUE0N5ZxrRG6OVDlgG2LwKZzKGA2y4pRXUNSq8llJqTSES3uPQkp433T9LVyWsjc Mze/Z6YlVrBgq4G8ipe32F4IIGbwoh4ZVRJRRr9/HS9N/iaJHiTxmiZ7X41sKgOJIlTxoe ZclZCzDritqoGY6QeqQcz/8FN3HJ1XBCIVJJBopoz1wMS7igDPecTgua1Bdg5A== From: Herve Codina To: Herve Codina , Qiang Zhao , Li Yang , Jakub Kicinski , Shengjiu Wang , Xiubo Li , Fabio Estevam , Nicolin Chen , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Christophe Leroy Cc: Arnd Bergmann , linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org, Thomas Petazzoni Subject: [PATCH 17/17] soc: fsl: cpm1: qmc: Introduce functions to change timeslots at runtime Date: Tue, 28 Nov 2023 15:08:16 +0100 Message-ID: <20231128140818.261541-18-herve.codina@bootlin.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231128140818.261541-1-herve.codina@bootlin.com> References: <20231128140818.261541-1-herve.codina@bootlin.com> MIME-Version: 1.0 X-GND-Sasl: herve.codina@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231128_060841_324974_5431DAE5 X-CRM114-Status: GOOD ( 13.35 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Introduce qmc_chan_{get,set}_ts_info() function to allow timeslots modification at runtime. The modification is provided using qmc_chan_set_ts_info() and will be applied on next qmc_chan_start(). qmc_chan_set_ts_info() must be called with the channel rx and/or tx stopped. Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy --- drivers/soc/fsl/qe/qmc.c | 51 ++++++++++++++++++++++++++++++++++++++++ include/soc/fsl/qe/qmc.h | 10 ++++++++ 2 files changed, 61 insertions(+) diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c index 73903ce31695..79fe79b9464f 100644 --- a/drivers/soc/fsl/qe/qmc.c +++ b/drivers/soc/fsl/qe/qmc.c @@ -290,6 +290,57 @@ int qmc_chan_get_info(struct qmc_chan *chan, struct qmc_chan_info *info) } EXPORT_SYMBOL(qmc_chan_get_info); +int qmc_chan_get_ts_info(struct qmc_chan *chan, struct qmc_chan_ts_info *ts_info) +{ + unsigned long flags; + + spin_lock_irqsave(&chan->ts_lock, flags); + + ts_info->rx_ts_mask_avail = chan->rx_ts_mask_avail; + ts_info->tx_ts_mask_avail = chan->tx_ts_mask_avail; + ts_info->rx_ts_mask = chan->rx_ts_mask; + ts_info->tx_ts_mask = chan->tx_ts_mask; + + spin_unlock_irqrestore(&chan->ts_lock, flags); + + return 0; +} +EXPORT_SYMBOL(qmc_chan_get_ts_info); + +int qmc_chan_set_ts_info(struct qmc_chan *chan, const struct qmc_chan_ts_info *ts_info) +{ + unsigned long flags; + int ret; + + /* Only a subset of available timeslots is allowed */ + if ((ts_info->rx_ts_mask & chan->rx_ts_mask_avail) != ts_info->rx_ts_mask) + return -EINVAL; + if ((ts_info->tx_ts_mask & chan->tx_ts_mask_avail) != ts_info->tx_ts_mask) + return -EINVAL; + + /* In case of common rx/tx table, rx/tx masks must be identical */ + if (chan->qmc->is_tsa_64rxtx) { + if (ts_info->rx_ts_mask != ts_info->tx_ts_mask) + return -EINVAL; + } + + spin_lock_irqsave(&chan->ts_lock, flags); + + if ((chan->tx_ts_mask != ts_info->tx_ts_mask && !chan->is_tx_stopped) || + (chan->rx_ts_mask != ts_info->rx_ts_mask && !chan->is_rx_stopped)) { + dev_err(chan->qmc->dev, "Channel rx and/or tx not stopped\n"); + ret = -EBUSY; + } else { + chan->tx_ts_mask = ts_info->tx_ts_mask; + chan->rx_ts_mask = ts_info->rx_ts_mask; + ret = 0; + } + spin_unlock_irqrestore(&chan->ts_lock, flags); + + return ret; +} +EXPORT_SYMBOL(qmc_chan_set_ts_info); + int qmc_chan_set_param(struct qmc_chan *chan, const struct qmc_chan_param *param) { if (param->mode != chan->mode) diff --git a/include/soc/fsl/qe/qmc.h b/include/soc/fsl/qe/qmc.h index 166484bb4294..2a333fc1ea81 100644 --- a/include/soc/fsl/qe/qmc.h +++ b/include/soc/fsl/qe/qmc.h @@ -40,6 +40,16 @@ struct qmc_chan_info { int qmc_chan_get_info(struct qmc_chan *chan, struct qmc_chan_info *info); +struct qmc_chan_ts_info { + u64 rx_ts_mask_avail; + u64 tx_ts_mask_avail; + u64 rx_ts_mask; + u64 tx_ts_mask; +}; + +int qmc_chan_get_ts_info(struct qmc_chan *chan, struct qmc_chan_ts_info *ts_info); +int qmc_chan_set_ts_info(struct qmc_chan *chan, const struct qmc_chan_ts_info *ts_info); + struct qmc_chan_param { enum qmc_mode mode; union {