From patchwork Thu Apr 9 01:39:47 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: 11481167 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 33178112C for ; Thu, 9 Apr 2020 01:40:02 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 1885C20936 for ; Thu, 9 Apr 2020 01:40:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1885C20936 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 70D2F6EB30; Thu, 9 Apr 2020 01:39:55 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-il1-f193.google.com (mail-il1-f193.google.com [209.85.166.193]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0F57D6EB30 for ; Thu, 9 Apr 2020 01:39:54 +0000 (UTC) Received: by mail-il1-f193.google.com with SMTP id x16so8731488ilp.12 for ; Wed, 08 Apr 2020 18:39:54 -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=NeMxgJdH/jWjk4OdPtDmPyqe4xiEJf5jOviRoYI8eDQ=; b=uYcQzwXPNNn1PsXaz771nls5ZqMG9A86R6+sWTxYE+xA1YxOJrqYjkWsErRwN1fMRG wjAVwifYgtLd7htDmqanY9hMI1d0rSskfIkHanhRI1q4lT+jnD6DWE3hRx4iB0QrSqQd UTGwDa/skpFsnUdQBlfyIjTSFW1OO0qMO8zxkWux4W71gKzgsXSidjxGDUi+JzJi51W/ YoHewKArHRt7G3aie1LCtOraCPuiFFDnCUx32P5d1z62EM0iR3Qxco7prwUFPN/VKsf8 2PWe2RX7xdDKU7YdhZwBUYqIUucoFQuTnh75N4umyJg22H5zYJTmU2I032D7MSVgnGs/ tsqg== X-Gm-Message-State: AGi0Puank7R3Gw6X6PQCXtfxHjH9hhpuJvYr35eOkwfHzUzLOo4dqRtW RZJFcaF/W8M2Ljrl/ej1pw== X-Google-Smtp-Source: APiQypJDvvUA1E07FL+7EPjit+1Aevzg7BjR6K3kcQX1/FdaqpMlNVcBBsvTg8H0nzmvnygDavWRYw== X-Received: by 2002:a92:af03:: with SMTP id n3mr2858690ili.180.1586396393315; Wed, 08 Apr 2020 18:39:53 -0700 (PDT) Received: from xps15.herring.priv ([64.188.179.248]) by smtp.googlemail.com with ESMTPSA id b5sm2353026ilf.23.2020.04.08.18.39.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Apr 2020 18:39:52 -0700 (PDT) From: Rob Herring To: Eric Anholt Subject: [PATCH 3/3] drm: pl111: Move VExpress setup into versatile init Date: Wed, 8 Apr 2020 19:39:47 -0600 Message-Id: <20200409013947.12667-4-robh@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200409013947.12667-1-robh@kernel.org> References: <20200409013947.12667-1-robh@kernel.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Since the VExpress setup in pl111_vexpress.c is now just a single function call, let's move it into pl111_versatile.c and we can further simplify pl111_versatile_init() by moving the other pieces for VExpress into pl111_vexpress_clcd_init(). Cc: Eric Anholt Cc: dri-devel@lists.freedesktop.org Signed-off-by: Rob Herring Acked-by: Sam Ravnborg Reviewed-by: Linus Walleij --- drivers/gpu/drm/pl111/Makefile | 1 - drivers/gpu/drm/pl111/pl111_versatile.c | 122 ++++++++++++++++++++---- drivers/gpu/drm/pl111/pl111_vexpress.c | 96 ------------------- drivers/gpu/drm/pl111/pl111_vexpress.h | 22 ----- 4 files changed, 102 insertions(+), 139 deletions(-) delete mode 100644 drivers/gpu/drm/pl111/pl111_vexpress.c delete mode 100644 drivers/gpu/drm/pl111/pl111_vexpress.h diff --git a/drivers/gpu/drm/pl111/Makefile b/drivers/gpu/drm/pl111/Makefile index 0c70f0e91d21..67d430d433e0 100644 --- a/drivers/gpu/drm/pl111/Makefile +++ b/drivers/gpu/drm/pl111/Makefile @@ -3,7 +3,6 @@ pl111_drm-y += pl111_display.o \ pl111_versatile.o \ pl111_drv.o -pl111_drm-$(CONFIG_ARCH_VEXPRESS) += pl111_vexpress.o pl111_drm-$(CONFIG_ARCH_NOMADIK) += pl111_nomadik.o pl111_drm-$(CONFIG_DEBUG_FS) += pl111_debugfs.o diff --git a/drivers/gpu/drm/pl111/pl111_versatile.c b/drivers/gpu/drm/pl111/pl111_versatile.c index 8c2551088f26..1b55f977e945 100644 --- a/drivers/gpu/drm/pl111/pl111_versatile.c +++ b/drivers/gpu/drm/pl111/pl111_versatile.c @@ -11,7 +11,6 @@ #include #include "pl111_versatile.h" -#include "pl111_vexpress.h" #include "pl111_drm.h" static struct regmap *versatile_syscon_map; @@ -309,13 +308,110 @@ static const struct pl111_variant_data pl111_vexpress = { .broken_clockdivider = true, }; +#define VEXPRESS_FPGAMUX_MOTHERBOARD 0x00 +#define VEXPRESS_FPGAMUX_DAUGHTERBOARD_1 0x01 +#define VEXPRESS_FPGAMUX_DAUGHTERBOARD_2 0x02 + +static int pl111_vexpress_clcd_init(struct device *dev, struct device_node *np, + struct pl111_drm_dev_private *priv) +{ + struct platform_device *pdev; + struct device_node *root; + struct device_node *child; + struct device_node *ct_clcd = NULL; + struct regmap *map; + bool has_coretile_clcd = false; + bool has_coretile_hdlcd = false; + bool mux_motherboard = true; + u32 val; + int ret; + + if (!IS_ENABLED(CONFIG_VEXPRESS_CONFIG)) + return -ENODEV; + + /* + * Check if we have a CLCD or HDLCD on the core tile by checking if a + * CLCD or HDLCD is available in the root of the device tree. + */ + root = of_find_node_by_path("/"); + if (!root) + return -EINVAL; + + for_each_available_child_of_node(root, child) { + if (of_device_is_compatible(child, "arm,pl111")) { + has_coretile_clcd = true; + ct_clcd = child; + break; + } + if (of_device_is_compatible(child, "arm,hdlcd")) { + has_coretile_hdlcd = true; + of_node_put(child); + break; + } + } + + of_node_put(root); + + /* + * If there is a coretile HDLCD and it has a driver, + * do not mux the CLCD on the motherboard to the DVI. + */ + if (has_coretile_hdlcd && IS_ENABLED(CONFIG_DRM_HDLCD)) + mux_motherboard = false; + + /* + * On the Vexpress CA9 we let the CLCD on the coretile + * take precedence, so also in this case do not mux the + * motherboard to the DVI. + */ + if (has_coretile_clcd) + mux_motherboard = false; + + if (mux_motherboard) { + dev_info(dev, "DVI muxed to motherboard CLCD\n"); + val = VEXPRESS_FPGAMUX_MOTHERBOARD; + } else if (ct_clcd == dev->of_node) { + dev_info(dev, + "DVI muxed to daughterboard 1 (core tile) CLCD\n"); + val = VEXPRESS_FPGAMUX_DAUGHTERBOARD_1; + } else { + dev_info(dev, "core tile graphics present\n"); + dev_info(dev, "this device will be deactivated\n"); + return -ENODEV; + } + + /* Call into deep Vexpress configuration API */ + pdev = of_find_device_by_node(np); + if (!pdev) { + dev_err(dev, "can't find the sysreg device, deferring\n"); + return -EPROBE_DEFER; + } + + map = devm_regmap_init_vexpress_config(&pdev->dev); + if (IS_ERR(map)) { + platform_device_put(pdev); + return PTR_ERR(map); + } + + ret = regmap_write(map, 0, val); + platform_device_put(pdev); + if (ret) { + dev_err(dev, "error setting DVI muxmode\n"); + return -ENODEV; + } + + priv->variant = &pl111_vexpress; + dev_info(dev, "initializing Versatile Express PL111\n"); + + return 0; +} + int pl111_versatile_init(struct device *dev, struct pl111_drm_dev_private *priv) { const struct of_device_id *clcd_id; enum versatile_clcd versatile_clcd_type; struct device_node *np; struct regmap *map; - int ret; np = of_find_matching_node_and_match(NULL, versatile_clcd_of_match, &clcd_id); @@ -326,17 +422,10 @@ int pl111_versatile_init(struct device *dev, struct pl111_drm_dev_private *priv) versatile_clcd_type = (enum versatile_clcd)clcd_id->data; /* Versatile Express special handling */ - if (IS_ENABLED(CONFIG_VEXPRESS_CONFIG) && versatile_clcd_type == VEXPRESS_CLCD_V2M) { - struct platform_device *pdev; - /* Call into deep Vexpress configuration API */ - pdev = of_find_device_by_node(np); - if (!pdev) { - dev_err(dev, "can't find the sysreg device, deferring\n"); - of_node_put(np); - return -EPROBE_DEFER; - } - map = devm_regmap_init_vexpress_config(&pdev->dev); - platform_device_put(pdev); + if (versatile_clcd_type == VEXPRESS_CLCD_V2M) { + int ret = pl111_vexpress_clcd_init(dev, np, priv); + of_node_put(np); + return ret; } else { map = syscon_node_to_regmap(np); } @@ -380,13 +469,6 @@ int pl111_versatile_init(struct device *dev, struct pl111_drm_dev_private *priv) priv->variant_display_disable = pl111_realview_clcd_disable; dev_info(dev, "set up callbacks for RealView PL111\n"); break; - case VEXPRESS_CLCD_V2M: - priv->variant = &pl111_vexpress; - dev_info(dev, "initializing Versatile Express PL111\n"); - ret = pl111_vexpress_clcd_init(dev, priv, map); - if (ret) - return ret; - break; default: dev_info(dev, "unknown Versatile system controller\n"); break; diff --git a/drivers/gpu/drm/pl111/pl111_vexpress.c b/drivers/gpu/drm/pl111/pl111_vexpress.c deleted file mode 100644 index 37ed3f1da820..000000000000 --- a/drivers/gpu/drm/pl111/pl111_vexpress.c +++ /dev/null @@ -1,96 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Versatile Express PL111 handling - * Copyright (C) 2018 Linus Walleij - * - * This module binds to the "arm,vexpress-muxfpga" device on the - * Versatile Express configuration bus and sets up which CLCD instance - * gets muxed out on the DVI bridge. - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include "pl111_drm.h" -#include "pl111_vexpress.h" - -#define VEXPRESS_FPGAMUX_MOTHERBOARD 0x00 -#define VEXPRESS_FPGAMUX_DAUGHTERBOARD_1 0x01 -#define VEXPRESS_FPGAMUX_DAUGHTERBOARD_2 0x02 - -int pl111_vexpress_clcd_init(struct device *dev, - struct pl111_drm_dev_private *priv, - struct regmap *map) -{ - struct device_node *root; - struct device_node *child; - struct device_node *ct_clcd = NULL; - bool has_coretile_clcd = false; - bool has_coretile_hdlcd = false; - bool mux_motherboard = true; - u32 val; - int ret; - - /* - * Check if we have a CLCD or HDLCD on the core tile by checking if a - * CLCD or HDLCD is available in the root of the device tree. - */ - root = of_find_node_by_path("/"); - if (!root) - return -EINVAL; - - for_each_available_child_of_node(root, child) { - if (of_device_is_compatible(child, "arm,pl111")) { - has_coretile_clcd = true; - ct_clcd = child; - break; - } - if (of_device_is_compatible(child, "arm,hdlcd")) { - has_coretile_hdlcd = true; - of_node_put(child); - break; - } - } - - of_node_put(root); - - /* - * If there is a coretile HDLCD and it has a driver, - * do not mux the CLCD on the motherboard to the DVI. - */ - if (has_coretile_hdlcd && IS_ENABLED(CONFIG_DRM_HDLCD)) - mux_motherboard = false; - - /* - * On the Vexpress CA9 we let the CLCD on the coretile - * take precedence, so also in this case do not mux the - * motherboard to the DVI. - */ - if (has_coretile_clcd) - mux_motherboard = false; - - if (mux_motherboard) { - dev_info(dev, "DVI muxed to motherboard CLCD\n"); - val = VEXPRESS_FPGAMUX_MOTHERBOARD; - } else if (ct_clcd == dev->of_node) { - dev_info(dev, - "DVI muxed to daughterboard 1 (core tile) CLCD\n"); - val = VEXPRESS_FPGAMUX_DAUGHTERBOARD_1; - } else { - dev_info(dev, "core tile graphics present\n"); - dev_info(dev, "this device will be deactivated\n"); - return -ENODEV; - } - - ret = regmap_write(map, 0, val); - if (ret) { - dev_err(dev, "error setting DVI muxmode\n"); - return -ENODEV; - } - - return 0; -} diff --git a/drivers/gpu/drm/pl111/pl111_vexpress.h b/drivers/gpu/drm/pl111/pl111_vexpress.h deleted file mode 100644 index bb54864ca91e..000000000000 --- a/drivers/gpu/drm/pl111/pl111_vexpress.h +++ /dev/null @@ -1,22 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -struct device; -struct pl111_drm_dev_private; -struct regmap; - -#ifdef CONFIG_ARCH_VEXPRESS - -int pl111_vexpress_clcd_init(struct device *dev, - struct pl111_drm_dev_private *priv, - struct regmap *map); - -#else - -static inline int pl111_vexpress_clcd_init(struct device *dev, - struct pl111_drm_dev_private *priv, - struct regmap *map) -{ - return -ENODEV; -} - -#endif