From patchwork Thu Sep 10 17:28:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Enric Balletbo i Serra X-Patchwork-Id: 11768319 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 11B9014F6 for ; Thu, 10 Sep 2020 17:32:02 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DA9E720C09 for ; Thu, 10 Sep 2020 17:32:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="yfb4kfSM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DA9E720C09 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.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=exnmHQYptCynrjOXZUAtxcoNNP0aAysSWjvnE0lwF3c=; b=yfb4kfSMBcZ5P4VDYNm6TSiiK hPBFpisQcY6LwosMoeuGss3H/bNMNoay5MfONporj7/fSJZUIJkdtke3hOXHYQiCt6vXYl9ZpIYE5 NimXkt/OWXcG8ybMwBaTax+KHk1hgKiO35avN1i3P/HlTrZ6QnIsf5wzaLNV41rnoAGKn/69jVvx6 rBrCLiZH8PDpZabN9WPMXUdMfSgAj3mZ+dy+pKnY4niW6BpN//9GVoKbaCKroq0MR7CsfqMgCCJKP GYKyDN/fyO+48IRRZPM9SC631zUXX9vBsU39htlu+A8LPcFVx3FAVY/IhUuCWLxCqZ4ZH/JVB++WA EvzhmgYJg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kGQOj-0004x5-I6; Thu, 10 Sep 2020 17:30:13 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kGQNM-0004DJ-4s; Thu, 10 Sep 2020 17:28:49 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id A991729BB0A From: Enric Balletbo i Serra To: linux-kernel@vger.kernel.org Subject: [PATCH 09/12] soc: mediatek: pm-domains: Allow bus protection to ignore clear ack Date: Thu, 10 Sep 2020 19:28:23 +0200 Message-Id: <20200910172826.3074357-10-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200910172826.3074357-1-enric.balletbo@collabora.com> References: <20200910172826.3074357-1-enric.balletbo@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200910_132848_303144_2253B7A5 X-CRM114-Status: GOOD ( 11.41 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: drinkcat@chromium.org, weiyi.lu@mediatek.com, fparent@baylibre.com, Matthias Brugger , linux-mediatek@lists.infradead.org, hsinyi@chromium.org, matthias.bgg@gmail.com, Collabora Kernel ML , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Matthias Brugger In some cases the hardware does not create an acknowledgment of the bus protection clearing. Add a flag to the bus protection indicating that a clear event will be ignored. Signed-off-by: Matthias Brugger Signed-off-by: Enric Balletbo i Serra --- drivers/soc/mediatek/mtk-pm-domains.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c index 52a93a87e313..29e88adc8ea6 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.c +++ b/drivers/soc/mediatek/mtk-pm-domains.c @@ -60,19 +60,23 @@ #define SPM_MAX_BUS_PROT_DATA 3 -#define _BUS_PROT(_mask, _set, _clr, _sta, _update) { \ - .bus_prot_mask = (_mask), \ - .bus_prot_set = _set, \ - .bus_prot_clr = _clr, \ - .bus_prot_sta = _sta, \ - .bus_prot_reg_update = _update, \ +#define _BUS_PROT(_mask, _set, _clr, _sta, _update, _ignore) { \ + .bus_prot_mask = (_mask), \ + .bus_prot_set = _set, \ + .bus_prot_clr = _clr, \ + .bus_prot_sta = _sta, \ + .bus_prot_reg_update = _update, \ + .ignore_clr_ack = _ignore, \ } -#define BUS_PROT_WR(_mask, _set, _clr, _sta) \ - _BUS_PROT(_mask, _set, _clr, _sta, false) +#define BUS_PROT_WR(_mask, _set, _clr, _sta) \ + _BUS_PROT(_mask, _set, _clr, _sta, false, false) + +#define BUS_PROT_WR_IGN(_mask, _set, _clr, _sta) \ + _BUS_PROT(_mask, _set, _clr, _sta, false, true) #define BUS_PROT_UPDATE(_mask, _set, _clr, _sta) \ - _BUS_PROT(_mask, _set, _clr, _sta, true) + _BUS_PROT(_mask, _set, _clr, _sta, true, false) struct scpsys_bus_prot_data { u32 bus_prot_mask; @@ -80,6 +84,7 @@ struct scpsys_bus_prot_data { u32 bus_prot_clr; u32 bus_prot_sta; bool bus_prot_reg_update; + bool ignore_clr_ack; }; #define MAX_SUBSYS_CLKS 10 @@ -257,6 +262,9 @@ static int _scpsys_bus_protect_disable(const struct scpsys_bus_prot_data *bpd, else regmap_write(regmap, bpd[i].bus_prot_clr, mask); + if (bpd[i].ignore_clr_ack) + continue; + ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta, val, !(val & mask), MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);