From patchwork Thu Oct 1 16:01:47 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: 11811803 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 87B9C6CA for ; Thu, 1 Oct 2020 16:04:31 +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 5896C208C7 for ; Thu, 1 Oct 2020 16:04:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="0PVkqdyF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5896C208C7 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=O6fTElyWTWr/D4/wQqEBLLm4fxdBUEltG/N7gd2lmvw=; b=0PVkqdyFuYENskMNXA0IUiMns jdv8a6kSIyvGffGh7ZgbIiUtc+AskxyT+Z/OZnJsl6cpxRB16ALsCVAf7VUBz/SeFEHXnwQACdRkB dWM5jZ5hYfv40DGKaz2FiCrYxDLwVws7tQ+GCR4EqpPl1/73n1xOfH/3vXyGpuqlpMiL01CKo2RXQ 8dtZfqXNT14GRLy/5ms+OjAC1XCkMKrRklua26/8dWCwwkMzFYjQWimKpuLcuhpPvnSjGBb+5nUl5 RDEN5G1bfvO3WyDwYFnj6wKKngl36HajkBw1marj7PaZUfvJp4NRL0uNTCj8tgbeHrAlXqCQRm6MD /UF7Vl8DQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kO12T-0000An-14; Thu, 01 Oct 2020 16:02:37 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kO11z-0008Oj-99; Thu, 01 Oct 2020 16:02:09 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id F214F29D75A From: Enric Balletbo i Serra To: linux-kernel@vger.kernel.org Subject: [PATCH v2 05/12] soc: mediatek: pm_domains: Make bus protection generic Date: Thu, 1 Oct 2020 18:01:47 +0200 Message-Id: <20201001160154.3587848-6-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201001160154.3587848-1-enric.balletbo@collabora.com> References: <20201001160154.3587848-1-enric.balletbo@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201001_120207_532839_4D4612D7 X-CRM114-Status: GOOD ( 14.94 ) 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_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender 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 Bus protection is not exclusively done by calling the infracfg misc driver. Make the calls for setting and clearing the bus protection generic so that we can use other blocks for it as well. Signed-off-by: Matthias Brugger Signed-off-by: Enric Balletbo i Serra --- Changes in v2: None drivers/soc/mediatek/mtk-infracfg.c | 5 --- drivers/soc/mediatek/mtk-pm-domains.c | 53 +++++++++++++++++++++------ include/linux/soc/mediatek/infracfg.h | 5 +++ 3 files changed, 47 insertions(+), 16 deletions(-) diff --git a/drivers/soc/mediatek/mtk-infracfg.c b/drivers/soc/mediatek/mtk-infracfg.c index 341c7ac250e3..8871a524e023 100644 --- a/drivers/soc/mediatek/mtk-infracfg.c +++ b/drivers/soc/mediatek/mtk-infracfg.c @@ -12,11 +12,6 @@ #define MTK_POLL_DELAY_US 10 #define MTK_POLL_TIMEOUT (jiffies_to_usecs(HZ)) -#define INFRA_TOPAXI_PROTECTEN 0x0220 -#define INFRA_TOPAXI_PROTECTSTA1 0x0228 -#define INFRA_TOPAXI_PROTECTEN_SET 0x0260 -#define INFRA_TOPAXI_PROTECTEN_CLR 0x0264 - /** * mtk_infracfg_set_bus_protection - enable bus protection * @regmap: The infracfg regmap diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c index cc8915b53c7e..b5e7c9846c34 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.c +++ b/drivers/soc/mediatek/mtk-pm-domains.c @@ -162,18 +162,24 @@ static int scpsys_sram_disable(struct scpsys_domain *pd) MTK_POLL_TIMEOUT); } -static int scpsys_bus_protect_enable(struct scpsys_domain *pd) +static int _scpsys_bus_protect_enable(const struct scpsys_bus_prot_data *bpd, struct regmap *regmap) { - const struct scpsys_bus_prot_data *bpd = pd->data->bp_infracfg; int i, ret; for (i = 0; i < SPM_MAX_BUS_PROT_DATA; i++) { - if (!bpd[i].bus_prot_mask) + u32 val, mask = bpd[i].bus_prot_mask; + + if (!mask) break; - ret = mtk_infracfg_set_bus_protection(pd->infracfg, - bpd[i].bus_prot_mask, - bpd[i].bus_prot_reg_update); + 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); + + ret = regmap_read_poll_timeout(regmap, INFRA_TOPAXI_PROTECTSTA1, + val, (val & mask) == mask, + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); if (ret) return ret; } @@ -181,18 +187,34 @@ static int scpsys_bus_protect_enable(struct scpsys_domain *pd) return 0; } -static int scpsys_bus_protect_disable(struct scpsys_domain *pd) +static int scpsys_bus_protect_enable(struct scpsys_domain *pd) { const struct scpsys_bus_prot_data *bpd = pd->data->bp_infracfg; + int ret; + + ret = _scpsys_bus_protect_enable(bpd, pd->infracfg); + return ret; +} + +static int _scpsys_bus_protect_disable(const struct scpsys_bus_prot_data *bpd, + struct regmap *regmap) +{ int i, ret; for (i = 0; i < SPM_MAX_BUS_PROT_DATA; i++) { - if (!bpd[i].bus_prot_mask) + u32 val, mask = bpd[i].bus_prot_mask; + + if (!mask) return 0; - ret = mtk_infracfg_clear_bus_protection(pd->infracfg, - bpd[i].bus_prot_mask, - bpd[i].bus_prot_reg_update); + if (bpd[i].bus_prot_reg_update) + regmap_update_bits(regmap, INFRA_TOPAXI_PROTECTEN, mask, 0); + else + regmap_write(regmap, INFRA_TOPAXI_PROTECTEN_CLR, mask); + + ret = regmap_read_poll_timeout(regmap, INFRA_TOPAXI_PROTECTSTA1, + val, !(val & mask), + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); if (ret) return ret; } @@ -200,6 +222,15 @@ static int scpsys_bus_protect_disable(struct scpsys_domain *pd) return 0; } +static int scpsys_bus_protect_disable(struct scpsys_domain *pd) +{ + const struct scpsys_bus_prot_data *bpd = pd->data->bp_infracfg; + int ret; + + ret = _scpsys_bus_protect_disable(bpd, pd->infracfg); + return ret; +} + static int scpsys_power_on(struct generic_pm_domain *genpd) { struct scpsys_domain *pd = container_of(genpd, struct scpsys_domain, genpd); diff --git a/include/linux/soc/mediatek/infracfg.h b/include/linux/soc/mediatek/infracfg.h index fd25f0148566..f967d02cc2ff 100644 --- a/include/linux/soc/mediatek/infracfg.h +++ b/include/linux/soc/mediatek/infracfg.h @@ -32,6 +32,11 @@ #define MT7622_TOP_AXI_PROT_EN_WB (BIT(2) | BIT(6) | \ BIT(7) | BIT(8)) +#define INFRA_TOPAXI_PROTECTEN 0x0220 +#define INFRA_TOPAXI_PROTECTSTA1 0x0228 +#define INFRA_TOPAXI_PROTECTEN_SET 0x0260 +#define INFRA_TOPAXI_PROTECTEN_CLR 0x0264 + 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,