From patchwork Wed Apr 29 20:58:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rob Herring (Arm)" X-Patchwork-Id: 11518469 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 1EAF892C for ; Wed, 29 Apr 2020 20:58:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0774620B1F for ; Wed, 29 Apr 2020 20:58:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588193930; bh=I4K30Y1UnAJMFJ2f6SRW5vxNKvcyl722D/9anR47YMQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Uozy1K3D6vnpwxCp8ZiWyEyMjA2lpIVF/oTa0INJF0LOm9hNy5QtlAsFmZhTbauJY MnZevcJUCZqzAhAPy27uKES/G475cQp9kN3glY4BlqYiahGmfrXWbEhv+m7/Igv+EN vzj0S5VsbejYQ2fX0azlXF7nF27474LmrcxTmqpM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727123AbgD2U6t (ORCPT ); Wed, 29 Apr 2020 16:58:49 -0400 Received: from mail-ot1-f68.google.com ([209.85.210.68]:37488 "EHLO mail-ot1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727122AbgD2U6t (ORCPT ); Wed, 29 Apr 2020 16:58:49 -0400 Received: by mail-ot1-f68.google.com with SMTP id z17so2992545oto.4; Wed, 29 Apr 2020 13:58:48 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=wAYzoo9E1tE9/2iVETbtMyzd0WgUqutI/YsP481agIY=; b=i3Lzizl9eCcNwqzzw/qzoEvuMjgZsCyeqYyHnNX9D6uEs2KR/0olRlBZ6W+Za/JB7Z IAm/+zr8szknqlSCQQ0ANRIrP0TtbkaERazsKma6epC44S17ZH3Em395xHgbBH+f5lb4 zEbDVVKBYT1UZuf5DNqdD+gg7DHIIIPSOfPF7uBvcI/8Z5esJfJjG3Pzbf7acIQaSM3/ O9ZS1tQZWAe0FZWZLJy/kk2d87HABwYqWr4cetySjH/sfLCWHZvGU9c0nTbKf4nSGCIa NuWAVg72qdAcRK6jQWIUrNoWX5gVOnnagTE5Mj91uatEPdGGCuXkIrh5YMAzNxga1weV JLWA== X-Gm-Message-State: AGi0PuYbZPJiztzN83pE4dbuuif1/SNON/FUltbW7QFzYSff2LOqH2hj U7weNqJcifgUNpCPhIbWxw== X-Google-Smtp-Source: APiQypL6VMfh9STdhdq0lWJ41mOtjkhlel+T1nIUlLAUcZ1DqzRqoySLlrrZMv9KLPtPI0GvIu3yNg== X-Received: by 2002:a9d:569:: with SMTP id 96mr2850246otw.59.1588193928178; Wed, 29 Apr 2020 13:58:48 -0700 (PDT) Received: from xps15.herring.priv (24-155-109-49.dyn.grandenetworks.net. [24.155.109.49]) by smtp.googlemail.com with ESMTPSA id z13sm653162oth.10.2020.04.29.13.58.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 13:58:47 -0700 (PDT) From: Rob Herring To: Linus Walleij , Liviu Dudau , Lorenzo Pieralisi , Sudeep Holla Cc: Kevin Brodsky , Arnd Bergmann , Catalin Marinas , Greg Kroah-Hartman , Lee Jones , Sebastian Reichel , Stephen Boyd , Will Deacon , linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH v2 14/16] vexpress: Move setting master site to vexpress-config bus Date: Wed, 29 Apr 2020 15:58:23 -0500 Message-Id: <20200429205825.10604-15-robh@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200429205825.10604-1-robh@kernel.org> References: <20200429205825.10604-1-robh@kernel.org> MIME-Version: 1.0 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org There's only a single caller of vexpress_config_set_master() from vexpress-sysreg.c. Let's just make the registers needed available to vexpress-config and move all the code there. The registers needed aren't used anywhere else either. With this, we can get rid of the private API between these 2 drivers. Cc: Sudeep Holla Cc: Lorenzo Pieralisi Cc: Linus Walleij Cc: Lee Jones Cc: Greg Kroah-Hartman Acked-by: Liviu Dudau Signed-off-by: Rob Herring Acked-by: Sudeep Holla Acked-by: Lee Jones --- v2: - Reword subject --- drivers/bus/vexpress-config.c | 37 +++++++++++++++++++++++++++++++---- drivers/mfd/vexpress-sysreg.c | 25 +---------------------- include/linux/vexpress.h | 9 --------- 3 files changed, 34 insertions(+), 37 deletions(-) diff --git a/drivers/bus/vexpress-config.c b/drivers/bus/vexpress-config.c index 43deb4df140b..caa35a4cb34d 100644 --- a/drivers/bus/vexpress-config.c +++ b/drivers/bus/vexpress-config.c @@ -14,9 +14,17 @@ #include #include -#define SYS_CFGDATA 0x0 +#define SYS_MISC 0x0 +#define SYS_MISC_MASTERSITE (1 << 14) -#define SYS_CFGCTRL 0x4 +#define SYS_PROCID0 0x24 +#define SYS_PROCID1 0x28 +#define SYS_HBI_MASK 0xfff +#define SYS_PROCIDx_HBI_SHIFT 0 + +#define SYS_CFGDATA 0x40 + +#define SYS_CFGCTRL 0x44 #define SYS_CFGCTRL_START (1 << 31) #define SYS_CFGCTRL_WRITE (1 << 30) #define SYS_CFGCTRL_DCC(n) (((n) & 0xf) << 26) @@ -25,10 +33,14 @@ #define SYS_CFGCTRL_POSITION(n) (((n) & 0xf) << 12) #define SYS_CFGCTRL_DEVICE(n) (((n) & 0xfff) << 0) -#define SYS_CFGSTAT 0x8 +#define SYS_CFGSTAT 0x48 #define SYS_CFGSTAT_ERR (1 << 1) #define SYS_CFGSTAT_COMPLETE (1 << 0) +#define VEXPRESS_SITE_MB 0 +#define VEXPRESS_SITE_DB1 1 +#define VEXPRESS_SITE_DB2 2 +#define VEXPRESS_SITE_MASTER 0xf struct vexpress_syscfg { struct device *dev; @@ -59,7 +71,7 @@ static DEFINE_MUTEX(vexpress_config_mutex); static u32 vexpress_config_site_master = VEXPRESS_SITE_MASTER; -void vexpress_config_set_master(u32 site) +static void vexpress_config_set_master(u32 site) { vexpress_config_site_master = site; } @@ -340,6 +352,8 @@ static int vexpress_syscfg_probe(struct platform_device *pdev) struct resource *res; struct vexpress_config_bridge *bridge; struct device_node *node; + int master; + u32 dt_hbi; syscfg = devm_kzalloc(&pdev->dev, sizeof(*syscfg), GFP_KERNEL); if (!syscfg) @@ -361,6 +375,21 @@ static int vexpress_syscfg_probe(struct platform_device *pdev) dev_set_drvdata(&pdev->dev, bridge); + master = readl(syscfg->base + SYS_MISC) & SYS_MISC_MASTERSITE ? + VEXPRESS_SITE_DB2 : VEXPRESS_SITE_DB1; + vexpress_config_set_master(master); + + /* Confirm board type against DT property, if available */ + if (of_property_read_u32(of_root, "arm,hbi", &dt_hbi) == 0) { + u32 id = readl(syscfg->base + (master == VEXPRESS_SITE_DB1 ? + SYS_PROCID0 : SYS_PROCID1)); + u32 hbi = (id >> SYS_PROCIDx_HBI_SHIFT) & SYS_HBI_MASK; + + if (WARN_ON(dt_hbi != hbi)) + dev_warn(&pdev->dev, "DT HBI (%x) is not matching hardware (%x)!\n", + dt_hbi, hbi); + } + for_each_compatible_node(node, NULL, "arm,vexpress,config-bus") { struct device_node *bridge_np; diff --git a/drivers/mfd/vexpress-sysreg.c b/drivers/mfd/vexpress-sysreg.c index eeeeb1d26d5d..aaf24af287dd 100644 --- a/drivers/mfd/vexpress-sysreg.c +++ b/drivers/mfd/vexpress-sysreg.c @@ -14,7 +14,6 @@ #include #include #include -#include #define SYS_ID 0x000 #define SYS_SW 0x004 @@ -37,11 +36,6 @@ #define SYS_CFGCTRL 0x0a4 #define SYS_CFGSTAT 0x0a8 -#define SYS_HBI_MASK 0xfff -#define SYS_PROCIDx_HBI_SHIFT 0 - -#define SYS_MISC_MASTERSITE (1 << 14) - /* The sysreg block is just a random collection of various functions... */ static struct bgpio_pdata vexpress_sysreg_sys_led_pdata = { @@ -94,7 +88,7 @@ static struct mfd_cell vexpress_sysreg_cells[] = { .name = "vexpress-syscfg", .num_resources = 1, .resources = (struct resource []) { - DEFINE_RES_MEM(SYS_CFGDATA, 0xc), + DEFINE_RES_MEM(SYS_MISC, 0x4c), }, } }; @@ -104,8 +98,6 @@ static int vexpress_sysreg_probe(struct platform_device *pdev) struct resource *mem; void __iomem *base; struct gpio_chip *mmc_gpio_chip; - int master; - u32 dt_hbi; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!mem) @@ -115,21 +107,6 @@ static int vexpress_sysreg_probe(struct platform_device *pdev) if (!base) return -ENOMEM; - master = readl(base + SYS_MISC) & SYS_MISC_MASTERSITE ? - VEXPRESS_SITE_DB2 : VEXPRESS_SITE_DB1; - vexpress_config_set_master(master); - - /* Confirm board type against DT property, if available */ - if (of_property_read_u32(of_root, "arm,hbi", &dt_hbi) == 0) { - u32 id = readl(base + (master == VEXPRESS_SITE_DB1 ? - SYS_PROCID0 : SYS_PROCID1)); - u32 hbi = (id >> SYS_PROCIDx_HBI_SHIFT) & SYS_HBI_MASK; - - if (WARN_ON(dt_hbi != hbi)) - dev_warn(&pdev->dev, "DT HBI (%x) is not matching hardware (%x)!\n", - dt_hbi, hbi); - } - /* * Duplicated SYS_MCI pseudo-GPIO controller for compatibility with * older trees using sysreg node for MMC control lines. diff --git a/include/linux/vexpress.h b/include/linux/vexpress.h index 65096c792d57..2f9dd072f11f 100644 --- a/include/linux/vexpress.h +++ b/include/linux/vexpress.h @@ -10,15 +10,6 @@ #include #include -#define VEXPRESS_SITE_MB 0 -#define VEXPRESS_SITE_DB1 1 -#define VEXPRESS_SITE_DB2 2 -#define VEXPRESS_SITE_MASTER 0xf - -/* Config infrastructure */ - -void vexpress_config_set_master(u32 site); - /* Config regmap API */ struct regmap *devm_regmap_init_vexpress_config(struct device *dev);