From patchwork Tue Feb 9 12:37:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Stanley X-Patchwork-Id: 12077967 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36E11C433DB for ; Tue, 9 Feb 2021 12:37:51 +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 D0B9F64E88 for ; Tue, 9 Feb 2021 12:37:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D0B9F64E88 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jms.id.au 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 2E04E6E051; Tue, 9 Feb 2021 12:37:50 +0000 (UTC) Received: from mail-pf1-x431.google.com (mail-pf1-x431.google.com [IPv6:2607:f8b0:4864:20::431]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9A7C36E051 for ; Tue, 9 Feb 2021 12:37:49 +0000 (UTC) Received: by mail-pf1-x431.google.com with SMTP id q20so11813270pfu.8 for ; Tue, 09 Feb 2021 04:37:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HEWcLvUvYkWYLO51rzp4RR+x1aKBWP/abPyEZI4rYFM=; b=UA7qw6pCaOdf/yqq69etxef0untkhUFXSI+O9aCuyR/lOYzzPCRtWaHB6KbMDFaObh maH0YiX2IcjeEONLLi2m+Sk+3PTzs33BzrB2mJ0HcLcjRk2r9l8yFR3/KfrkL6EkdZzb i8Cave62QyllrlcUMYo1mEwijF+bfDhpgxDWkcnziTD6OcT6DxjwzJyWMEFdZWboC3uY cbIO+ZB5NSD6J70UHw1gRakG/afPMQiZ5Hd6tPMcqAv+xikSyDJDq/u4w5z8EMpDP8T2 Lg8Z3VO2gx3ssY95EEyC5FYR7D6991/PEqnpomJXo/ZUGeBHxea1UuMcYEtJj3Cc0wko 9Lgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=HEWcLvUvYkWYLO51rzp4RR+x1aKBWP/abPyEZI4rYFM=; b=rncD5jG05DWQGnIC0Uq0g1WaB54BlyAdSHXol11jbuggFjR/bPVZb9t5ZkGPYnl2qN Uu21HvtLOJd3+kNlGLaK6VsIhs6UmJm+GvFc71KhXyXnnAiSjgeeK5ipNSNWAp7ctG7c PKlF43HU0gUMrcTRiNyE5f/Xbyc10/zNpw4o0a5PggHFdDAyeOawPJojdmVi0M5ZlvJG R7HX76iEqYPaYYcC/kxg7sDX/iJFFXturXh4R+fj7NBgxJajelb5Sb+fzOW+8Ve76e0j OUqo1XQVV+2lRkoQW+FXGjOZwx+FqLvPIQMZAWCdEz6lJ8yibxiPv+LBWtXYu33WO5+W wjbA== X-Gm-Message-State: AOAM53078jfk0cftALHtqUQYmgv8otro9tQ89peh87XKp+t9grOQ76wz HVEekvTx5pr0thPbFGrtD0THHJbaKOqzvA== X-Google-Smtp-Source: ABdhPJyzzNoV3ORY6H1uJ0CJ3FGX0Y0Hbb6/83hFpXTlUvZfQQ4ZzNnS2ckv5IYMwgAECs49OLy6zg== X-Received: by 2002:a63:c70c:: with SMTP id n12mr22157570pgg.347.1612874269194; Tue, 09 Feb 2021 04:37:49 -0800 (PST) Received: from voyager.lan ([45.124.203.14]) by smtp.gmail.com with ESMTPSA id i7sm22584395pfc.50.2021.02.09.04.37.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Feb 2021 04:37:48 -0800 (PST) From: Joel Stanley To: David Airlie , Daniel Vetter , Andrew Jeffery , Jeremy Kerr Subject: [PATCH v3 1/2] drm/aspeed: Look up syscon by phandle Date: Tue, 9 Feb 2021 23:07:33 +1030 Message-Id: <20210209123734.130483-2-joel@jms.id.au> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210209123734.130483-1-joel@jms.id.au> References: <20210209123734.130483-1-joel@jms.id.au> 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: linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-aspeed@lists.ozlabs.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This scales better to multiple families of SoC. The lookup by compatible can be removed in a future change. The fallback path is for the ast2500 platform only. Other platforms will be added with the new style, so they won't need fallback paths. Signed-off-by: Joel Stanley Reviewed-by: Andrew Jeffery --- v2: Fix fallback path to still find ast2500-scu. Thanks jk for the review --- drivers/gpu/drm/aspeed/aspeed_gfx_drv.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c index 457ec04950f7..54a6bda03c0e 100644 --- a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c +++ b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c @@ -103,6 +103,7 @@ static int aspeed_gfx_load(struct drm_device *drm) { struct platform_device *pdev = to_platform_device(drm->dev); struct aspeed_gfx *priv = to_aspeed_gfx(drm); + struct device_node *np = pdev->dev.of_node; struct resource *res; int ret; @@ -111,10 +112,13 @@ static int aspeed_gfx_load(struct drm_device *drm) if (IS_ERR(priv->base)) return PTR_ERR(priv->base); - priv->scu = syscon_regmap_lookup_by_compatible("aspeed,ast2500-scu"); + priv->scu = syscon_regmap_lookup_by_phandle(np, "syscon"); if (IS_ERR(priv->scu)) { - dev_err(&pdev->dev, "failed to find SCU regmap\n"); - return PTR_ERR(priv->scu); + priv->scu = syscon_regmap_lookup_by_compatible("aspeed,ast2500-scu"); + if (IS_ERR(priv->scu)) { + dev_err(&pdev->dev, "failed to find SCU regmap\n"); + return PTR_ERR(priv->scu); + } } ret = of_reserved_mem_device_init(drm->dev); From patchwork Tue Feb 9 12:37:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Stanley X-Patchwork-Id: 12077969 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9F5FCC433DB for ; Tue, 9 Feb 2021 12:37:56 +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 3DC8964E88 for ; 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Tue, 09 Feb 2021 04:37:53 -0800 (PST) Received: from voyager.lan ([45.124.203.14]) by smtp.gmail.com with ESMTPSA id i7sm22584395pfc.50.2021.02.09.04.37.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Feb 2021 04:37:52 -0800 (PST) From: Joel Stanley To: David Airlie , Daniel Vetter , Andrew Jeffery , Jeremy Kerr Subject: [PATCH v3 2/2] drm/aspeed: Use dt matching for default register values Date: Tue, 9 Feb 2021 23:07:34 +1030 Message-Id: <20210209123734.130483-3-joel@jms.id.au> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210209123734.130483-1-joel@jms.id.au> References: <20210209123734.130483-1-joel@jms.id.au> 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: linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-aspeed@lists.ozlabs.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" There are minor differences in the values for the threshold value and the scan line size between families of ASPEED SoC. Additionally the SCU registers for the output control and scratch registers differ between families. This adds device tree matching to parameterise these values, allowing us to add support for the AST2400 now, and in the future the AST2600. Reviewed-by: Jeremy Kerr Signed-off-by: Joel Stanley --- v3: - Fix match table v2: - Add jk's review - Clean up comments and unused define - Add VGA password register --- drivers/gpu/drm/aspeed/aspeed_gfx.h | 8 ++-- drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c | 11 ++--- drivers/gpu/drm/aspeed/aspeed_gfx_drv.c | 57 ++++++++++++++++++------ 3 files changed, 55 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx.h b/drivers/gpu/drm/aspeed/aspeed_gfx.h index f1e7e56abc02..96501152bafa 100644 --- a/drivers/gpu/drm/aspeed/aspeed_gfx.h +++ b/drivers/gpu/drm/aspeed/aspeed_gfx.h @@ -11,6 +11,11 @@ struct aspeed_gfx { struct reset_control *rst; struct regmap *scu; + u32 dac_reg; + u32 vga_scratch_reg; + u32 throd_val; + u32 scan_line_max; + struct drm_simple_display_pipe pipe; struct drm_connector connector; }; @@ -100,6 +105,3 @@ int aspeed_gfx_create_output(struct drm_device *drm); /* CRT_THROD */ #define CRT_THROD_LOW(x) (x) #define CRT_THROD_HIGH(x) ((x) << 8) - -/* Default Threshold Seting */ -#define G5_CRT_THROD_VAL (CRT_THROD_LOW(0x24) | CRT_THROD_HIGH(0x3C)) diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c b/drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c index e54686c31a90..20c2197b270f 100644 --- a/drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c +++ b/drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c @@ -59,8 +59,8 @@ static void aspeed_gfx_enable_controller(struct aspeed_gfx *priv) u32 ctrl1 = readl(priv->base + CRT_CTRL1); u32 ctrl2 = readl(priv->base + CRT_CTRL2); - /* SCU2C: set DAC source for display output to Graphics CRT (GFX) */ - regmap_update_bits(priv->scu, 0x2c, BIT(16), BIT(16)); + /* Set DAC source for display output to Graphics CRT (GFX) */ + regmap_update_bits(priv->scu, priv->dac_reg, BIT(16), BIT(16)); writel(ctrl1 | CRT_CTRL_EN, priv->base + CRT_CTRL1); writel(ctrl2 | CRT_CTRL_DAC_EN, priv->base + CRT_CTRL2); @@ -74,7 +74,7 @@ static void aspeed_gfx_disable_controller(struct aspeed_gfx *priv) writel(ctrl1 & ~CRT_CTRL_EN, priv->base + CRT_CTRL1); writel(ctrl2 & ~CRT_CTRL_DAC_EN, priv->base + CRT_CTRL2); - regmap_update_bits(priv->scu, 0x2c, BIT(16), 0); + regmap_update_bits(priv->scu, priv->dac_reg, BIT(16), 0); } static void aspeed_gfx_crtc_mode_set_nofb(struct aspeed_gfx *priv) @@ -127,7 +127,8 @@ static void aspeed_gfx_crtc_mode_set_nofb(struct aspeed_gfx *priv) * Terminal Count: memory size of one scan line */ d_offset = m->hdisplay * bpp / 8; - t_count = (m->hdisplay * bpp + 127) / 128; + t_count = DIV_ROUND_UP(m->hdisplay * bpp, priv->scan_line_max); + writel(CRT_DISP_OFFSET(d_offset) | CRT_TERM_COUNT(t_count), priv->base + CRT_OFFSET); @@ -135,7 +136,7 @@ static void aspeed_gfx_crtc_mode_set_nofb(struct aspeed_gfx *priv) * Threshold: FIFO thresholds of refill and stop (16 byte chunks * per line, rounded up) */ - writel(G5_CRT_THROD_VAL, priv->base + CRT_THROD); + writel(priv->throd_val, priv->base + CRT_THROD); } static void aspeed_gfx_pipe_enable(struct drm_simple_display_pipe *pipe, diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c index 54a6bda03c0e..6b3a01ba3e0d 100644 --- a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c +++ b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include #include @@ -57,6 +58,34 @@ * which is available under NDA from ASPEED. */ +struct aspeed_gfx_config { + u32 dac_reg; /* DAC register in SCU */ + u32 vga_scratch_reg; /* VGA scratch register in SCU */ + u32 throd_val; /* Default Threshold Seting */ + u32 scan_line_max; /* Max memory size of one scan line */ +}; + +static const struct aspeed_gfx_config ast2400_config = { + .dac_reg = 0x2c, + .vga_scratch_reg = 0x50, + .throd_val = CRT_THROD_LOW(0x1e) | CRT_THROD_HIGH(0x12), + .scan_line_max = 64, +}; + +static const struct aspeed_gfx_config ast2500_config = { + .dac_reg = 0x2c, + .vga_scratch_reg = 0x50, + .throd_val = CRT_THROD_LOW(0x24) | CRT_THROD_HIGH(0x3c), + .scan_line_max = 128, +}; + +static const struct of_device_id aspeed_gfx_match[] = { + { .compatible = "aspeed,ast2400-gfx", .data = &ast2400_config }, + { .compatible = "aspeed,ast2500-gfx", .data = &ast2500_config }, + { }, +}; +MODULE_DEVICE_TABLE(of, aspeed_gfx_match); + static const struct drm_mode_config_funcs aspeed_gfx_mode_config_funcs = { .fb_create = drm_gem_fb_create, .atomic_check = drm_atomic_helper_check, @@ -97,13 +126,13 @@ static irqreturn_t aspeed_gfx_irq_handler(int irq, void *data) return IRQ_NONE; } - - static int aspeed_gfx_load(struct drm_device *drm) { struct platform_device *pdev = to_platform_device(drm->dev); struct aspeed_gfx *priv = to_aspeed_gfx(drm); struct device_node *np = pdev->dev.of_node; + const struct aspeed_gfx_config *config; + const struct of_device_id *match; struct resource *res; int ret; @@ -112,6 +141,16 @@ static int aspeed_gfx_load(struct drm_device *drm) if (IS_ERR(priv->base)) return PTR_ERR(priv->base); + match = of_match_device(aspeed_gfx_match, &pdev->dev); + if (!match) + return -EINVAL; + config = match->data; + + priv->dac_reg = config->dac_reg; + priv->vga_scratch_reg = config->vga_scratch_reg; + priv->throd_val = config->throd_val; + priv->scan_line_max = config->scan_line_max; + priv->scu = syscon_regmap_lookup_by_phandle(np, "syscon"); if (IS_ERR(priv->scu)) { priv->scu = syscon_regmap_lookup_by_compatible("aspeed,ast2500-scu"); @@ -206,14 +245,6 @@ static const struct drm_driver aspeed_gfx_driver = { .minor = 0, }; -static const struct of_device_id aspeed_gfx_match[] = { - { .compatible = "aspeed,ast2500-gfx" }, - { } -}; - -#define ASPEED_SCU_VGA0 0x50 -#define ASPEED_SCU_MISC_CTRL 0x2c - static ssize_t dac_mux_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { @@ -228,7 +259,7 @@ static ssize_t dac_mux_store(struct device *dev, struct device_attribute *attr, if (val > 3) return -EINVAL; - rc = regmap_update_bits(priv->scu, ASPEED_SCU_MISC_CTRL, 0x30000, val << 16); + rc = regmap_update_bits(priv->scu, priv->dac_reg, 0x30000, val << 16); if (rc < 0) return 0; @@ -241,7 +272,7 @@ static ssize_t dac_mux_show(struct device *dev, struct device_attribute *attr, c u32 reg; int rc; - rc = regmap_read(priv->scu, ASPEED_SCU_MISC_CTRL, ®); + rc = regmap_read(priv->scu, priv->dac_reg, ®); if (rc) return rc; @@ -256,7 +287,7 @@ vga_pw_show(struct device *dev, struct device_attribute *attr, char *buf) u32 reg; int rc; - rc = regmap_read(priv->scu, ASPEED_SCU_VGA0, ®); + rc = regmap_read(priv->scu, priv->vga_scratch_reg, ®); if (rc) return rc;