From patchwork Thu Sep 10 17:28:20 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: 11768317 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 15E2392C for ; Thu, 10 Sep 2020 17:31:52 +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 DE863206A1 for ; Thu, 10 Sep 2020 17:31:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="bje+aMBD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DE863206A1 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=DOc+Q8xBL8djjfl3/SQdFA+2/TQC9EPWM8LLNc9uHC8=; b=bje+aMBDOvt6Gb5qghL7MbLsm NCEidGxxPoIc6s7fDdLpoUf00BknbifLf2UaUWrpDId9azD1ygYgvV+BPHihWiqcHGcqHtrXd1ToC ucW4s+ZITTgSIzCHe0B2cjrYtHKYPAh9TW2nHrJwHLk8OHMneAj2b2G1jODgXtTE2oi26xlrgzXE/ EGgIPO71O6+T+O+a68tiDJ3yMqoIhxITARuTl4O0FKkBowaDNga/kGZuC5e1ChlgGO87gZQ3xMPs2 /dnQRMLSl/+4zkJYbhzAcclmAHhq5Uu71nqdWYX+mHbBrvxzrh7cztZ3AhYIolXRZ0z5MgcEl5p5N Stz654D4w==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kGQOV-0004nu-68; Thu, 10 Sep 2020 17:29:59 +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 1kGQNJ-0004C2-GY; Thu, 10 Sep 2020 17:28:48 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id 0ECF829BB18 From: Enric Balletbo i Serra To: linux-kernel@vger.kernel.org Subject: [PATCH 06/12] soc: mediatek: pm-domains: Add SMI block as bus protection block Date: Thu, 10 Sep 2020 19:28:20 +0200 Message-Id: <20200910172826.3074357-7-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_132845_789797_EA42E1D6 X-CRM114-Status: GOOD ( 17.15 ) 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 Apart from the infracfg block, the SMI block is used to enable the bus protection for some power domains. Add support for this block. Signed-off-by: Matthias Brugger Signed-off-by: Enric Balletbo i Serra --- drivers/soc/mediatek/mtk-pm-domains.c | 64 ++++++++++++++++++++------- include/linux/soc/mediatek/infracfg.h | 6 +++ 2 files changed, 53 insertions(+), 17 deletions(-) diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c index f609c2d454fa..3aa430a60602 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.c +++ b/drivers/soc/mediatek/mtk-pm-domains.c @@ -56,8 +56,25 @@ #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_WR(_mask, _set, _clr, _sta) \ + _BUS_PROT(_mask, _set, _clr, _sta, false) + +#define BUS_PROT_UPDATE(_mask, _set, _clr, _sta) \ + _BUS_PROT(_mask, _set, _clr, _sta, true) + struct scpsys_bus_prot_data { u32 bus_prot_mask; + u32 bus_prot_set; + u32 bus_prot_clr; + u32 bus_prot_sta; bool bus_prot_reg_update; }; @@ -69,6 +86,7 @@ struct scpsys_bus_prot_data { * @sram_pdn_ack_bits: The mask for sram power control acked bits. * @caps: The flag for active wake-up action. * @bp_infracfg: bus protection for infracfg subsystem + * @bp_smi: bus protection for smi subsystem */ struct scpsys_domain_data { u32 sta_mask; @@ -77,6 +95,7 @@ struct scpsys_domain_data { u32 sram_pdn_ack_bits; u8 caps; const struct scpsys_bus_prot_data bp_infracfg[SPM_MAX_BUS_PROT_DATA]; + const struct scpsys_bus_prot_data bp_smi[SPM_MAX_BUS_PROT_DATA]; }; struct scpsys_domain { @@ -86,6 +105,7 @@ struct scpsys_domain { int num_clks; struct clk_bulk_data *clks; struct regmap *infracfg; + struct regmap *smi; }; struct scpsys_soc_data { @@ -173,9 +193,9 @@ static int _scpsys_bus_protect_enable(const struct scpsys_bus_prot_data *bpd, st if (bpd[i].bus_prot_reg_update) regmap_update_bits(regmap, INFRA_TOPAXI_PROTECTEN, mask, mask); else - regmap_write(regmap, INFRA_TOPAXI_PROTECTEN_SET, mask); + regmap_write(regmap, bpd[i].bus_prot_set, mask); - ret = regmap_read_poll_timeout(regmap, INFRA_TOPAXI_PROTECTSTA1, + ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta, val, (val & mask) == mask, MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); if (ret) @@ -191,7 +211,11 @@ static int scpsys_bus_protect_enable(struct scpsys_domain *pd) int ret; ret = _scpsys_bus_protect_enable(bpd, pd->infracfg); - return ret; + if (ret) + return ret; + + bpd = pd->data->bp_smi; + return _scpsys_bus_protect_enable(bpd, pd->smi); } static int _scpsys_bus_protect_disable(const struct scpsys_bus_prot_data *bpd, @@ -206,11 +230,11 @@ static int _scpsys_bus_protect_disable(const struct scpsys_bus_prot_data *bpd, return 0; if (bpd[i].bus_prot_reg_update) - regmap_update_bits(regmap, INFRA_TOPAXI_PROTECTEN, mask, 0); + regmap_update_bits(regmap, bpd[i].bus_prot_set, mask, 0); else - regmap_write(regmap, INFRA_TOPAXI_PROTECTEN_CLR, mask); + regmap_write(regmap, bpd[i].bus_prot_clr, mask); - ret = regmap_read_poll_timeout(regmap, INFRA_TOPAXI_PROTECTSTA1, + ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta, val, !(val & mask), MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); if (ret) @@ -226,7 +250,11 @@ static int scpsys_bus_protect_disable(struct scpsys_domain *pd) int ret; ret = _scpsys_bus_protect_disable(bpd, pd->infracfg); - return ret; + if (ret) + return ret; + + bpd = pd->data->bp_smi; + return _scpsys_bus_protect_disable(bpd, pd->smi); } static int scpsys_power_on(struct generic_pm_domain *genpd) @@ -360,6 +388,10 @@ static int scpsys_add_one_domain(struct scpsys *scpsys, struct device_node *node if (IS_ERR(pd->infracfg)) pd->infracfg = NULL; + pd->smi = syscon_regmap_lookup_by_phandle(node, "mediatek,smi"); + if (IS_ERR(pd->smi)) + pd->smi = NULL; + pd->num_clks = of_clk_get_parent_count(node); if (pd->num_clks > 0) { pd->clks = devm_kcalloc(scpsys->dev, pd->num_clks, sizeof(*pd->clks), GFP_KERNEL); @@ -532,10 +564,9 @@ static const struct scpsys_domain_data scpsys_domain_data_mt8173[] = { .ctl_offs = SPM_DIS_PWR_CON, .sram_pdn_bits = GENMASK(11, 8), .sram_pdn_ack_bits = GENMASK(12, 12), - .bp_infracfg[0] = { - .bus_prot_reg_update = true, - .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MM_M0 | - MT8173_TOP_AXI_PROT_EN_MM_M1, + .bp_infracfg = { + BUS_PROT_UPDATE_MT8173(MT8173_TOP_AXI_PROT_EN_MM_M0 | + MT8173_TOP_AXI_PROT_EN_MM_M1), }, }, [MT8173_POWER_DOMAIN_VENC_LT] = { @@ -574,12 +605,11 @@ static const struct scpsys_domain_data scpsys_domain_data_mt8173[] = { .ctl_offs = SPM_MFG_PWR_CON, .sram_pdn_bits = GENMASK(13, 8), .sram_pdn_ack_bits = GENMASK(21, 16), - .bp_infracfg[0] = { - .bus_prot_reg_update = true, - .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MFG_S | - MT8173_TOP_AXI_PROT_EN_MFG_M0 | - MT8173_TOP_AXI_PROT_EN_MFG_M1 | - MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT, + .bp_infracfg = { + BUS_PROT_UPDATE_MT8173(MT8173_TOP_AXI_PROT_EN_MFG_S | + MT8173_TOP_AXI_PROT_EN_MFG_M0 | + MT8173_TOP_AXI_PROT_EN_MFG_M1 | + MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT), }, }, }; diff --git a/include/linux/soc/mediatek/infracfg.h b/include/linux/soc/mediatek/infracfg.h index f967d02cc2ff..3f18cddffb44 100644 --- a/include/linux/soc/mediatek/infracfg.h +++ b/include/linux/soc/mediatek/infracfg.h @@ -37,6 +37,12 @@ #define INFRA_TOPAXI_PROTECTEN_SET 0x0260 #define INFRA_TOPAXI_PROTECTEN_CLR 0x0264 +#define BUS_PROT_UPDATE_MT8173(_mask) \ + BUS_PROT_UPDATE(_mask, \ + INFRA_TOPAXI_PROTECTEN, \ + INFRA_TOPAXI_PROTECTEN_CLR, \ + INFRA_TOPAXI_PROTECTSTA1) + int mtk_infracfg_set_bus_protection(struct regmap *infracfg, u32 mask, bool reg_update); int mtk_infracfg_clear_bus_protection(struct regmap *infracfg, u32 mask,