From patchwork Fri Feb 3 12:49:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127430 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CD2C6C05027 for ; Fri, 3 Feb 2023 12:51:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=9Ojua9OtKG+8KmW1b4DuJu68iz/delIE6BZXdvbs+Ms=; b=MeK+UBorw5JP+H TH5UMw4RjIxoGg+I++b8kwGnfFjeCDONaAAkPXkm3xrwWGC/GVlUW9iC/lzrJkJqXVDk9mr7tDGfi dkp/dPIe4GBRYz53Gy/mEr2VCD/EEECfyj4aAV/PxUi7ohIE+D/rxnxJ50UasU34V8hEzBaNUq4lw 6ToAz+V1YAEVU/MdOg8j8wX75akCbdawkJFqiUlQdRRKFRreQdkCKzjnfveSw+6fig1qdaAyzgC8z eTnzer3WIr+Q8kcpwj+F4NoM3mrqh+Zhq1v8pJgdnnOkW0e/9q3AhU1Q1DPlSsguBvjPimjSbPdzG g5raUK1S3vT5tHJsBBGg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvXh-001qi0-80; Fri, 03 Feb 2023 12:51:49 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvWG-001pr0-1Q for linux-rockchip@lists.infradead.org; Fri, 03 Feb 2023 12:50:25 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pNvWE-0000bM-5M; Fri, 03 Feb 2023 13:50:18 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWB-002Opm-7r; Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvW9-000ZkG-RA; Fri, 03 Feb 2023 13:50:13 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 01/18] PM / devfreq: rockchip-dfi: Embed desc into private data struct Date: Fri, 3 Feb 2023 13:49:55 +0100 Message-Id: <20230203125012.3804008-2-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045020_445977_6C875833 X-CRM114-Status: GOOD ( 14.89 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org No need for an extra allocation, just embed the struct devfreq_event_desc into the private data struct. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 39ac069cabc75..570f1b36c3153 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -49,7 +49,7 @@ struct dmc_usage { */ struct rockchip_dfi { struct devfreq_event_dev *edev; - struct devfreq_event_desc *desc; + struct devfreq_event_desc desc; struct dmc_usage ch_usage[RK3399_DMC_NUM_CH]; struct device *dev; void __iomem *regs; @@ -203,14 +203,10 @@ static int rockchip_dfi_probe(struct platform_device *pdev) } data->dev = dev; - desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL); - if (!desc) - return -ENOMEM; - + desc = &data->desc; desc->ops = &rockchip_dfi_ops; desc->driver_data = data; desc->name = np->name; - data->desc = desc; data->edev = devm_devfreq_event_add_edev(&pdev->dev, desc); if (IS_ERR(data->edev)) { From patchwork Fri Feb 3 12:49:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127428 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 058B2C61DA4 for ; Fri, 3 Feb 2023 12:51:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ACK9erK+oN4gcATlXOh2tgs2a6kvhH+O6FuZZ0DK+bw=; b=csHQ2MD+wagmUM TqvT7aPNC1TxCXuLwhUpvQcJ3/25idsYhowpJXSzhj0n83PUoY/XG5KUhZ4qJ+kO4INuuy1XDrAzr M4kkTZwnSbh/7yd2uBIphv4dK6+NorLk6bN8fLahIh7o5CdgJU2PON+HzsTh2F86+qYjLwQEvzl5j zVjuS+mxivLG1nTz70aINj1uBAn76ISXZeeK0k01Iec8ZlgE9hkyyPmNYImge0yOnSQzuZR8hMpat aAp+ZxrEg/TYooe8kkVVzXIKthyCOsiLWgCtKHxkXgRpBeMYP5dlRt4EHuZRXnYjopaG8ujHpYyqY v2dcVlf/KM72afC5xqNA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvXK-001qTf-73; Fri, 03 Feb 2023 12:51:26 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvWG-001pqx-1J for linux-rockchip@lists.infradead.org; Fri, 03 Feb 2023 12:50:24 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pNvWE-0000bP-5F; Fri, 03 Feb 2023 13:50:18 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWB-002Opo-96; Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvW9-000ZkO-Rw; Fri, 03 Feb 2023 13:50:13 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 02/18] PM / devfreq: rockchip-dfi: use consistent name for private data struct Date: Fri, 3 Feb 2023 13:49:56 +0100 Message-Id: <20230203125012.3804008-3-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045020_200764_D83ABAD5 X-CRM114-Status: GOOD ( 20.36 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The variable name for the private data struct is 'info' in some functions and 'data' in others. Both names do not give a clue what type the variable has, so consistently use 'dfi'. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 72 ++++++++++++++-------------- 1 file changed, 36 insertions(+), 36 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 570f1b36c3153..98712ac68aa5f 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -59,13 +59,13 @@ struct rockchip_dfi { static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) { - struct rockchip_dfi *info = devfreq_event_get_drvdata(edev); - void __iomem *dfi_regs = info->regs; + struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); + void __iomem *dfi_regs = dfi->regs; u32 val; u32 ddr_type; /* get ddr type */ - regmap_read(info->regmap_pmu, RK3399_PMUGRF_OS_REG2, &val); + regmap_read(dfi->regmap_pmu, RK3399_PMUGRF_OS_REG2, &val); ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) & RK3399_PMUGRF_DDRTYPE_MASK; @@ -84,28 +84,28 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) static void rockchip_dfi_stop_hardware_counter(struct devfreq_event_dev *edev) { - struct rockchip_dfi *info = devfreq_event_get_drvdata(edev); - void __iomem *dfi_regs = info->regs; + struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); + void __iomem *dfi_regs = dfi->regs; writel_relaxed(SOFTWARE_DIS, dfi_regs + DDRMON_CTRL); } static int rockchip_dfi_get_busier_ch(struct devfreq_event_dev *edev) { - struct rockchip_dfi *info = devfreq_event_get_drvdata(edev); + struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); u32 tmp, max = 0; u32 i, busier_ch = 0; - void __iomem *dfi_regs = info->regs; + void __iomem *dfi_regs = dfi->regs; rockchip_dfi_stop_hardware_counter(edev); /* Find out which channel is busier */ for (i = 0; i < RK3399_DMC_NUM_CH; i++) { - info->ch_usage[i].access = readl_relaxed(dfi_regs + + dfi->ch_usage[i].access = readl_relaxed(dfi_regs + DDRMON_CH0_DFI_ACCESS_NUM + i * 20) * 4; - info->ch_usage[i].total = readl_relaxed(dfi_regs + + dfi->ch_usage[i].total = readl_relaxed(dfi_regs + DDRMON_CH0_COUNT_NUM + i * 20); - tmp = info->ch_usage[i].access; + tmp = dfi->ch_usage[i].access; if (tmp > max) { busier_ch = i; max = tmp; @@ -118,20 +118,20 @@ static int rockchip_dfi_get_busier_ch(struct devfreq_event_dev *edev) static int rockchip_dfi_disable(struct devfreq_event_dev *edev) { - struct rockchip_dfi *info = devfreq_event_get_drvdata(edev); + struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); rockchip_dfi_stop_hardware_counter(edev); - clk_disable_unprepare(info->clk); + clk_disable_unprepare(dfi->clk); return 0; } static int rockchip_dfi_enable(struct devfreq_event_dev *edev) { - struct rockchip_dfi *info = devfreq_event_get_drvdata(edev); + struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); int ret; - ret = clk_prepare_enable(info->clk); + ret = clk_prepare_enable(dfi->clk); if (ret) { dev_err(&edev->dev, "failed to enable dfi clk: %d\n", ret); return ret; @@ -149,13 +149,13 @@ static int rockchip_dfi_set_event(struct devfreq_event_dev *edev) static int rockchip_dfi_get_event(struct devfreq_event_dev *edev, struct devfreq_event_data *edata) { - struct rockchip_dfi *info = devfreq_event_get_drvdata(edev); + struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); int busier_ch; busier_ch = rockchip_dfi_get_busier_ch(edev); - edata->load_count = info->ch_usage[busier_ch].access; - edata->total_count = info->ch_usage[busier_ch].total; + edata->load_count = dfi->ch_usage[busier_ch].access; + edata->total_count = dfi->ch_usage[busier_ch].total; return 0; } @@ -176,46 +176,46 @@ MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match); static int rockchip_dfi_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct rockchip_dfi *data; + struct rockchip_dfi *dfi; struct devfreq_event_desc *desc; struct device_node *np = pdev->dev.of_node, *node; - data = devm_kzalloc(dev, sizeof(struct rockchip_dfi), GFP_KERNEL); - if (!data) + dfi = devm_kzalloc(dev, sizeof(*dfi), GFP_KERNEL); + if (!dfi) return -ENOMEM; - data->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(data->regs)) - return PTR_ERR(data->regs); + dfi->regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(dfi->regs)) + return PTR_ERR(dfi->regs); - data->clk = devm_clk_get(dev, "pclk_ddr_mon"); - if (IS_ERR(data->clk)) - return dev_err_probe(dev, PTR_ERR(data->clk), + dfi->clk = devm_clk_get(dev, "pclk_ddr_mon"); + if (IS_ERR(dfi->clk)) + return dev_err_probe(dev, PTR_ERR(dfi->clk), "Cannot get the clk pclk_ddr_mon\n"); /* try to find the optional reference to the pmu syscon */ node = of_parse_phandle(np, "rockchip,pmu", 0); if (node) { - data->regmap_pmu = syscon_node_to_regmap(node); + dfi->regmap_pmu = syscon_node_to_regmap(node); of_node_put(node); - if (IS_ERR(data->regmap_pmu)) - return PTR_ERR(data->regmap_pmu); + if (IS_ERR(dfi->regmap_pmu)) + return PTR_ERR(dfi->regmap_pmu); } - data->dev = dev; + dfi->dev = dev; - desc = &data->desc; + desc = &dfi->desc; desc->ops = &rockchip_dfi_ops; - desc->driver_data = data; + desc->driver_data = dfi; desc->name = np->name; - data->edev = devm_devfreq_event_add_edev(&pdev->dev, desc); - if (IS_ERR(data->edev)) { + dfi->edev = devm_devfreq_event_add_edev(&pdev->dev, desc); + if (IS_ERR(dfi->edev)) { dev_err(&pdev->dev, "failed to add devfreq-event device\n"); - return PTR_ERR(data->edev); + return PTR_ERR(dfi->edev); } - platform_set_drvdata(pdev, data); + platform_set_drvdata(pdev, dfi); return 0; } From patchwork Fri Feb 3 12:49:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127481 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7C739C61DA4 for ; Fri, 3 Feb 2023 13:01:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 03 Feb 2023 13:50:18 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvW9-002OpX-SF; Fri, 03 Feb 2023 13:50:15 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvW9-000Zkb-Su; Fri, 03 Feb 2023 13:50:13 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 03/18] PM / devfreq: rockchip-dfi: Make pmu regmap mandatory Date: Fri, 3 Feb 2023 13:49:57 +0100 Message-Id: <20230203125012.3804008-4-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045043_728415_266C11A1 X-CRM114-Status: GOOD ( 14.67 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org As a matter of fact the regmap_pmu already is mandatory because it is used unconditionally in the driver. Bail out gracefully in probe() rather than crashing later. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 98712ac68aa5f..47cc9e48dafab 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -193,14 +193,14 @@ static int rockchip_dfi_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(dfi->clk), "Cannot get the clk pclk_ddr_mon\n"); - /* try to find the optional reference to the pmu syscon */ node = of_parse_phandle(np, "rockchip,pmu", 0); - if (node) { - dfi->regmap_pmu = syscon_node_to_regmap(node); - of_node_put(node); - if (IS_ERR(dfi->regmap_pmu)) - return PTR_ERR(dfi->regmap_pmu); - } + if (!node) + return dev_err_probe(&pdev->dev, -ENODEV, "Can't find pmu_grf registers\n"); + + dfi->regmap_pmu = syscon_node_to_regmap(node); + if (IS_ERR(dfi->regmap_pmu)) + return PTR_ERR(dfi->regmap_pmu); + dfi->dev = dev; desc = &dfi->desc; From patchwork Fri Feb 3 12:49:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127431 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AF482C61DA4 for ; Fri, 3 Feb 2023 12:51:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=de5S7PxzZKloDjplMN9NfP0qdAi3+HCdss8RgNnaoiU=; b=gWFl9oJxFTuNvZ n37/5cK9INUwxF51CfIZZIaGaT5yFJdG6GvveQGYpw3uXyguauQer9XwN28KUjE9kdnqBiTg5aoAr gyot1wlAxfc5D1Kj5TwOS3gmWDeMFaONAw6FxlPVQcuAnONfknbNbeiAWBgM6ghy21fb1M+ZpGYXW NdRQjfUG9zXBO78TLSLWub9SYilytNwD0ZN8FcIXos0hRAGRNVnOPOBlM4xwDsEY5JIB24VWCa4z/ DG5/HjkglWZCzMLA297+rJECk08C7JvEVwp8dvIrtMSs5W7owGHyM0x7OR5vSfujGyLMRN0syhfgU XBSHGjV59BqBrqLe/TcQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvXf-001qh5-Eg; Fri, 03 Feb 2023 12:51:47 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvWG-001pr2-1S for linux-rockchip@lists.infradead.org; Fri, 03 Feb 2023 12:50:25 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pNvWE-0000ar-5Q; Fri, 03 Feb 2023 13:50:18 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWA-002Oph-RX; Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvW9-000Zko-Tn; Fri, 03 Feb 2023 13:50:13 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 04/18] PM / devfreq: rockchip-dfi: Add SoC specific init function Date: Fri, 3 Feb 2023 13:49:58 +0100 Message-Id: <20230203125012.3804008-5-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045020_414654_AD0F33E2 X-CRM114-Status: GOOD ( 20.90 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Move the RK3399 specifics to a SoC specific init function to make the way free for supporting other SoCs later. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 59 +++++++++++++++++++++------- 1 file changed, 44 insertions(+), 15 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 47cc9e48dafab..f317d3d063e9c 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -17,6 +17,7 @@ #include #include #include +#include #include @@ -55,27 +56,21 @@ struct rockchip_dfi { void __iomem *regs; struct regmap *regmap_pmu; struct clk *clk; + u32 ddr_type; }; static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) { struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); void __iomem *dfi_regs = dfi->regs; - u32 val; - u32 ddr_type; - - /* get ddr type */ - regmap_read(dfi->regmap_pmu, RK3399_PMUGRF_OS_REG2, &val); - ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) & - RK3399_PMUGRF_DDRTYPE_MASK; /* clear DDRMON_CTRL setting */ writel_relaxed(CLR_DDRMON_CTRL, dfi_regs + DDRMON_CTRL); /* set ddr type to dfi */ - if (ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR3) + if (dfi->ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR3) writel_relaxed(LPDDR3_EN, dfi_regs + DDRMON_CTRL); - else if (ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR4) + else if (dfi->ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR4) writel_relaxed(LPDDR4_EN, dfi_regs + DDRMON_CTRL); /* enable count, use software mode */ @@ -167,8 +162,34 @@ static const struct devfreq_event_ops rockchip_dfi_ops = { .set_event = rockchip_dfi_set_event, }; +static int rk3399_dfi_init(struct rockchip_dfi *dfi) +{ + struct regmap *regmap_pmu = dfi->regmap_pmu; + u32 val; + + dfi->clk = devm_clk_get(dfi->dev, "pclk_ddr_mon"); + if (IS_ERR(dfi->clk)) + return dev_err_probe(dfi->dev, PTR_ERR(dfi->clk), + "Cannot get the clk pclk_ddr_mon\n"); + + /* get ddr type */ + regmap_read(regmap_pmu, RK3399_PMUGRF_OS_REG2, &val); + dfi->ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) & + RK3399_PMUGRF_DDRTYPE_MASK; + + return 0; +}; + +struct rockchip_dfi_devtype_data { + int (*init)(struct rockchip_dfi *dfi); +}; + +static struct rockchip_dfi_devtype_data rk3399_devtype_data = { + .init = rk3399_dfi_init, +}; + static const struct of_device_id rockchip_dfi_id_match[] = { - { .compatible = "rockchip,rk3399-dfi" }, + { .compatible = "rockchip,rk3399-dfi", .data = &rk3399_devtype_data }, { }, }; MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match); @@ -179,6 +200,15 @@ static int rockchip_dfi_probe(struct platform_device *pdev) struct rockchip_dfi *dfi; struct devfreq_event_desc *desc; struct device_node *np = pdev->dev.of_node, *node; + const struct of_device_id *of_id; + const struct rockchip_dfi_devtype_data *devtype; + int ret; + + of_id = of_match_device(rockchip_dfi_id_match, &pdev->dev); + if (!of_id) + return -ENODEV; + + devtype = of_id->data; dfi = devm_kzalloc(dev, sizeof(*dfi), GFP_KERNEL); if (!dfi) @@ -188,11 +218,6 @@ static int rockchip_dfi_probe(struct platform_device *pdev) if (IS_ERR(dfi->regs)) return PTR_ERR(dfi->regs); - dfi->clk = devm_clk_get(dev, "pclk_ddr_mon"); - if (IS_ERR(dfi->clk)) - return dev_err_probe(dev, PTR_ERR(dfi->clk), - "Cannot get the clk pclk_ddr_mon\n"); - node = of_parse_phandle(np, "rockchip,pmu", 0); if (!node) return dev_err_probe(&pdev->dev, -ENODEV, "Can't find pmu_grf registers\n"); @@ -208,6 +233,10 @@ static int rockchip_dfi_probe(struct platform_device *pdev) desc->driver_data = dfi; desc->name = np->name; + ret = devtype->init(dfi); + if (ret) + return ret; + dfi->edev = devm_devfreq_event_add_edev(&pdev->dev, desc); if (IS_ERR(dfi->edev)) { dev_err(&pdev->dev, From patchwork Fri Feb 3 12:49:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127429 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5F69DC61DA4 for ; Fri, 3 Feb 2023 12:51:36 +0000 (UTC) DKIM-Signature: v=1; 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Fri, 03 Feb 2023 12:50:23 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pNvWE-0000bQ-5I; Fri, 03 Feb 2023 13:50:18 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWB-002Opp-An; Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvW9-000Zky-Uq; Fri, 03 Feb 2023 13:50:13 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 05/18] PM / devfreq: rockchip-dfi: dfi store raw values in counter struct Date: Fri, 3 Feb 2023 13:49:59 +0100 Message-Id: <20230203125012.3804008-6-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045020_207565_DFB4C710 X-CRM114-Status: GOOD ( 15.71 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org When adding perf support to the DFI driver the perf part will need the raw counter values, so move the fixed * 4 factor to rockchip_dfi_get_event(). Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index f317d3d063e9c..383fe8a17a512 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -97,7 +97,7 @@ static int rockchip_dfi_get_busier_ch(struct devfreq_event_dev *edev) /* Find out which channel is busier */ for (i = 0; i < RK3399_DMC_NUM_CH; i++) { dfi->ch_usage[i].access = readl_relaxed(dfi_regs + - DDRMON_CH0_DFI_ACCESS_NUM + i * 20) * 4; + DDRMON_CH0_DFI_ACCESS_NUM + i * 20); dfi->ch_usage[i].total = readl_relaxed(dfi_regs + DDRMON_CH0_COUNT_NUM + i * 20); tmp = dfi->ch_usage[i].access; @@ -149,7 +149,7 @@ static int rockchip_dfi_get_event(struct devfreq_event_dev *edev, busier_ch = rockchip_dfi_get_busier_ch(edev); - edata->load_count = dfi->ch_usage[busier_ch].access; + edata->load_count = dfi->ch_usage[busier_ch].access * 4; edata->total_count = dfi->ch_usage[busier_ch].total; return 0; From patchwork Fri Feb 3 12:50:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127460 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3AE1AC61DA4 for ; Fri, 3 Feb 2023 12:54:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Eo7YCpqOULCcQyh4kAeRJLG3S/HTGyXgvhV43u3t7bU=; b=GbLM5N4mQMXJVw dc7aJJ1PtENw6iGFw29hzgH+EGE8QqgbKdinrRHmGyKwpF1W/z1rVkeX9kemdq5HJ+qQSbI5tz7xU jM8Qyki5qqaGcOCmMbI5YRLFds79+fVDmycRbXyMMJyh8WRaE6oDrO29jRfihCemWbjlVVfmoEOl8 f09lrRKnRzDAlxkXE4b/T8Bzeqy+axH8AP8i+5gwRRXCe0grh4kT2sD1LnEcNnWRGZ/Tey8NDud8O 6zxoStfS7U7nP4rzQI0FCBrg4NyYsv385g9eW+j8xynSQRQj9AzscvdLI8akZXs215E0aQMmot0Pa yHjWOxqJ+EaM+4Rzm84w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvZr-001rwt-UX; Fri, 03 Feb 2023 12:54:03 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvWN-001pxT-JP for linux-rockchip@lists.infradead.org; Fri, 03 Feb 2023 12:50:31 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pNvWE-0000ao-5I; Fri, 03 Feb 2023 13:50:18 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWA-002Opb-M6; Fri, 03 Feb 2023 13:50:15 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvW9-000Zl5-VL; Fri, 03 Feb 2023 13:50:13 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 06/18] PM / devfreq: rockchip-dfi: Use free running counter Date: Fri, 3 Feb 2023 13:50:00 +0100 Message-Id: <20230203125012.3804008-7-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045027_698320_C24BFAF9 X-CRM114-Status: GOOD ( 20.77 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The DDR_MON counters are free running counters. These are resetted to 0 when starting them over like currently done when reading the current counter values. Resetting the counters becomes a problem with perf support we want to add later, because perf needs a monotonicly increasing counter. This patch removes resetting the counters and keeps them running instead. Counter overflows are handled with modular arithmetics. Not stopping the counters also has the impact that they are running while we are reading them. We cannot read multiple timers atomically, so the values do not exactly fit together. The effect should be negligible though as the time between two measurements is some orders of magnitude bigger than the time we need to read multiple registers. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 53 ++++++++++++++++------------ 1 file changed, 31 insertions(+), 22 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 383fe8a17a512..25d64d9166a9a 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -38,11 +38,15 @@ #define DDRMON_CH1_COUNT_NUM 0x3c #define DDRMON_CH1_DFI_ACCESS_NUM 0x40 -struct dmc_usage { +struct dmc_count_channel { u32 access; u32 total; }; +struct dmc_count { + struct dmc_count_channel c[RK3399_DMC_NUM_CH]; +}; + /* * The dfi controller can monitor DDR load. It has an upper and lower threshold * for the operating points. Whenever the usage leaves these bounds an event is @@ -51,7 +55,8 @@ struct dmc_usage { struct rockchip_dfi { struct devfreq_event_dev *edev; struct devfreq_event_desc desc; - struct dmc_usage ch_usage[RK3399_DMC_NUM_CH]; + struct dmc_count count; + struct dmc_count last_event_count; struct device *dev; void __iomem *regs; struct regmap *regmap_pmu; @@ -85,30 +90,18 @@ static void rockchip_dfi_stop_hardware_counter(struct devfreq_event_dev *edev) writel_relaxed(SOFTWARE_DIS, dfi_regs + DDRMON_CTRL); } -static int rockchip_dfi_get_busier_ch(struct devfreq_event_dev *edev) +static void rockchip_dfi_read_counters(struct devfreq_event_dev *edev, struct dmc_count *count) { struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); - u32 tmp, max = 0; - u32 i, busier_ch = 0; + u32 i; void __iomem *dfi_regs = dfi->regs; - rockchip_dfi_stop_hardware_counter(edev); - - /* Find out which channel is busier */ for (i = 0; i < RK3399_DMC_NUM_CH; i++) { - dfi->ch_usage[i].access = readl_relaxed(dfi_regs + + count->c[i].access = readl_relaxed(dfi_regs + DDRMON_CH0_DFI_ACCESS_NUM + i * 20); - dfi->ch_usage[i].total = readl_relaxed(dfi_regs + + count->c[i].total = readl_relaxed(dfi_regs + DDRMON_CH0_COUNT_NUM + i * 20); - tmp = dfi->ch_usage[i].access; - if (tmp > max) { - busier_ch = i; - max = tmp; - } } - rockchip_dfi_start_hardware_counter(edev); - - return busier_ch; } static int rockchip_dfi_disable(struct devfreq_event_dev *edev) @@ -145,12 +138,28 @@ static int rockchip_dfi_get_event(struct devfreq_event_dev *edev, struct devfreq_event_data *edata) { struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); - int busier_ch; + struct dmc_count count; + struct dmc_count *last = &dfi->last_event_count; + u32 access = 0, total = 0; + int i; + + rockchip_dfi_read_counters(edev, &count); + + /* We can only report one channel, so find the busiest one */ + for (i = 0; i < RK3399_DMC_NUM_CH; i++) { + u32 a = count.c[i].access - last->c[i].access; + u32 t = count.c[i].total - last->c[i].total; + + if (a > access) { + access = a; + total = t; + } + } - busier_ch = rockchip_dfi_get_busier_ch(edev); + edata->load_count = access * 4; + edata->total_count = total; - edata->load_count = dfi->ch_usage[busier_ch].access * 4; - edata->total_count = dfi->ch_usage[busier_ch].total; + dfi->last_event_count = count; return 0; } From patchwork Fri Feb 3 12:50:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127433 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ABC51C61DA4 for ; Fri, 3 Feb 2023 12:53:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 03 Feb 2023 13:50:22 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWB-002Opw-E8; Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvW9-000ZlD-W9; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 07/18] PM / devfreq: rockchip-dfi: introduce channel mask Date: Fri, 3 Feb 2023 13:50:01 +0100 Message-Id: <20230203125012.3804008-8-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045024_083262_F29E4398 X-CRM114-Status: GOOD ( 17.92 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Different Rockchip SoC variants have a different number of channels. Introduce a channel mask to make the number of channels configurable from SoC initialization code. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 25d64d9166a9a..18d578730fd0c 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -21,7 +21,7 @@ #include -#define RK3399_DMC_NUM_CH 2 +#define DMC_MAX_CHANNELS 2 /* DDRMON_CTRL */ #define DDRMON_CTRL 0x04 @@ -44,7 +44,7 @@ struct dmc_count_channel { }; struct dmc_count { - struct dmc_count_channel c[RK3399_DMC_NUM_CH]; + struct dmc_count_channel c[DMC_MAX_CHANNELS]; }; /* @@ -62,6 +62,7 @@ struct rockchip_dfi { struct regmap *regmap_pmu; struct clk *clk; u32 ddr_type; + unsigned int channel_mask; }; static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) @@ -96,7 +97,9 @@ static void rockchip_dfi_read_counters(struct devfreq_event_dev *edev, struct dm u32 i; void __iomem *dfi_regs = dfi->regs; - for (i = 0; i < RK3399_DMC_NUM_CH; i++) { + for (i = 0; i < DMC_MAX_CHANNELS; i++) { + if (!(dfi->channel_mask & BIT(i))) + continue; count->c[i].access = readl_relaxed(dfi_regs + DDRMON_CH0_DFI_ACCESS_NUM + i * 20); count->c[i].total = readl_relaxed(dfi_regs + @@ -146,9 +149,14 @@ static int rockchip_dfi_get_event(struct devfreq_event_dev *edev, rockchip_dfi_read_counters(edev, &count); /* We can only report one channel, so find the busiest one */ - for (i = 0; i < RK3399_DMC_NUM_CH; i++) { - u32 a = count.c[i].access - last->c[i].access; - u32 t = count.c[i].total - last->c[i].total; + for (i = 0; i < DMC_MAX_CHANNELS; i++) { + u32 a, t; + + if (!(dfi->channel_mask & BIT(i))) + continue; + + a = count.c[i].access - last->c[i].access; + t = count.c[i].total - last->c[i].total; if (a > access) { access = a; @@ -186,6 +194,8 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi) dfi->ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) & RK3399_PMUGRF_DDRTYPE_MASK; + dfi->channel_mask = 3; + return 0; }; From patchwork Fri Feb 3 12:50:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127463 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4A0A1C05027 for ; Fri, 3 Feb 2023 12:56:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000ZlH-0m; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 08/18] PM / devfreq: rk3399_dmc,dfi: generalize DDRTYPE defines Date: Fri, 3 Feb 2023 13:50:02 +0100 Message-Id: <20230203125012.3804008-9-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_124952_715725_6C19BADB X-CRM114-Status: GOOD ( 21.86 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The DDRTYPE defines are named to be RK3399 specific, but they can be used for other Rockchip SoCs as well, so replace the RK3399_PMUGRF_ prefix with ROCKCHIP_. They are defined in a SoC specific header file, so when generalizing the prefix also move the new defines to a SoC agnostic header file. While at it use GENMASK to define the DDRTYPE bitfield and give it a name including the full register name. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 10 ++++++---- drivers/devfreq/rk3399_dmc.c | 10 +++++----- include/soc/rockchip/rk3399_grf.h | 7 +------ include/soc/rockchip/rockchip_grf.h | 15 +++++++++++++++ 4 files changed, 27 insertions(+), 15 deletions(-) create mode 100644 include/soc/rockchip/rockchip_grf.h diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 18d578730fd0c..7896cd8beb143 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -18,7 +18,10 @@ #include #include #include +#include +#include +#include #include #define DMC_MAX_CHANNELS 2 @@ -74,9 +77,9 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) writel_relaxed(CLR_DDRMON_CTRL, dfi_regs + DDRMON_CTRL); /* set ddr type to dfi */ - if (dfi->ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR3) + if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR3) writel_relaxed(LPDDR3_EN, dfi_regs + DDRMON_CTRL); - else if (dfi->ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR4) + else if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR4) writel_relaxed(LPDDR4_EN, dfi_regs + DDRMON_CTRL); /* enable count, use software mode */ @@ -191,8 +194,7 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi) /* get ddr type */ regmap_read(regmap_pmu, RK3399_PMUGRF_OS_REG2, &val); - dfi->ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) & - RK3399_PMUGRF_DDRTYPE_MASK; + dfi->ddr_type = FIELD_GET(RK3399_PMUGRF_OS_REG2_DDRTYPE, val); dfi->channel_mask = 3; diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c index daff407026157..fd2c5ffedf41e 100644 --- a/drivers/devfreq/rk3399_dmc.c +++ b/drivers/devfreq/rk3399_dmc.c @@ -22,6 +22,7 @@ #include #include +#include #include #include @@ -381,17 +382,16 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev) } regmap_read(data->regmap_pmu, RK3399_PMUGRF_OS_REG2, &val); - ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) & - RK3399_PMUGRF_DDRTYPE_MASK; + ddr_type = FIELD_GET(RK3399_PMUGRF_OS_REG2_DDRTYPE, val); switch (ddr_type) { - case RK3399_PMUGRF_DDRTYPE_DDR3: + case ROCKCHIP_DDRTYPE_DDR3: data->odt_dis_freq = data->ddr3_odt_dis_freq; break; - case RK3399_PMUGRF_DDRTYPE_LPDDR3: + case ROCKCHIP_DDRTYPE_LPDDR3: data->odt_dis_freq = data->lpddr3_odt_dis_freq; break; - case RK3399_PMUGRF_DDRTYPE_LPDDR4: + case ROCKCHIP_DDRTYPE_LPDDR4: data->odt_dis_freq = data->lpddr4_odt_dis_freq; break; default: diff --git a/include/soc/rockchip/rk3399_grf.h b/include/soc/rockchip/rk3399_grf.h index 3eebabcb28123..775f8444bea8d 100644 --- a/include/soc/rockchip/rk3399_grf.h +++ b/include/soc/rockchip/rk3399_grf.h @@ -11,11 +11,6 @@ /* PMU GRF Registers */ #define RK3399_PMUGRF_OS_REG2 0x308 -#define RK3399_PMUGRF_DDRTYPE_SHIFT 13 -#define RK3399_PMUGRF_DDRTYPE_MASK 7 -#define RK3399_PMUGRF_DDRTYPE_DDR3 3 -#define RK3399_PMUGRF_DDRTYPE_LPDDR2 5 -#define RK3399_PMUGRF_DDRTYPE_LPDDR3 6 -#define RK3399_PMUGRF_DDRTYPE_LPDDR4 7 +#define RK3399_PMUGRF_OS_REG2_DDRTYPE GENMASK(15, 13) #endif diff --git a/include/soc/rockchip/rockchip_grf.h b/include/soc/rockchip/rockchip_grf.h new file mode 100644 index 0000000000000..dc77bb762a05a --- /dev/null +++ b/include/soc/rockchip/rockchip_grf.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Rockchip General Register Files definitions + */ + +#ifndef __SOC_ROCKCHIP_GRF_H +#define __SOC_ROCKCHIP_GRF_H + +/* Rockchip DDRTYPE defines */ +#define ROCKCHIP_DDRTYPE_DDR3 3 +#define ROCKCHIP_DDRTYPE_LPDDR2 5 +#define ROCKCHIP_DDRTYPE_LPDDR3 6 +#define ROCKCHIP_DDRTYPE_LPDDR4 7 + +#endif /* __SOC_ROCKCHIP_GRF_H */ From patchwork Fri Feb 3 12:50:03 2023 Content-Type: text/plain; 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Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000ZlS-1k; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 09/18] PM / devfreq: rockchip-dfi: Clean up DDR type register defines Date: Fri, 3 Feb 2023 13:50:03 +0100 Message-Id: <20230203125012.3804008-10-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045028_125075_08E87199 X-CRM114-Status: GOOD ( 14.24 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Use the HIWORD_UPDATE() define known from other rockchip drivers to make the defines look less odd to the readers who've seen other rockchip drivers. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 32 +++++++++++++++++----------- 1 file changed, 20 insertions(+), 12 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 7896cd8beb143..035984d3c7b01 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -26,15 +26,19 @@ #define DMC_MAX_CHANNELS 2 +#define HIWORD_UPDATE(val, mask) ((val) | (mask) << 16) + /* DDRMON_CTRL */ #define DDRMON_CTRL 0x04 -#define CLR_DDRMON_CTRL (0x1f0000 << 0) -#define LPDDR4_EN (0x10001 << 4) -#define HARDWARE_EN (0x10001 << 3) -#define LPDDR3_EN (0x10001 << 2) -#define SOFTWARE_EN (0x10001 << 1) -#define SOFTWARE_DIS (0x10000 << 1) -#define TIME_CNT_EN (0x10001 << 0) +#define DDRMON_CTRL_DDR4 BIT(5) +#define DDRMON_CTRL_LPDDR4 BIT(4) +#define DDRMON_CTRL_HARDWARE_EN BIT(3) +#define DDRMON_CTRL_LPDDR23 BIT(2) +#define DDRMON_CTRL_SOFTWARE_EN BIT(1) +#define DDRMON_CTRL_TIMER_CNT_EN BIT(0) +#define DDRMON_CTRL_DDR_TYPE_MASK (DDRMON_CTRL_DDR4 | \ + DDRMON_CTRL_LPDDR4 | \ + DDRMON_CTRL_LPDDR23) #define DDRMON_CH0_COUNT_NUM 0x28 #define DDRMON_CH0_DFI_ACCESS_NUM 0x2c @@ -74,16 +78,19 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) void __iomem *dfi_regs = dfi->regs; /* clear DDRMON_CTRL setting */ - writel_relaxed(CLR_DDRMON_CTRL, dfi_regs + DDRMON_CTRL); + writel_relaxed(HIWORD_UPDATE(0, 0xffff), dfi_regs + DDRMON_CTRL); /* set ddr type to dfi */ if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR3) - writel_relaxed(LPDDR3_EN, dfi_regs + DDRMON_CTRL); + writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR23, DDRMON_CTRL_DDR_TYPE_MASK), + dfi_regs + DDRMON_CTRL); else if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR4) - writel_relaxed(LPDDR4_EN, dfi_regs + DDRMON_CTRL); + writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR4, DDRMON_CTRL_DDR_TYPE_MASK), + dfi_regs + DDRMON_CTRL); /* enable count, use software mode */ - writel_relaxed(SOFTWARE_EN, dfi_regs + DDRMON_CTRL); + writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_SOFTWARE_EN, DDRMON_CTRL_SOFTWARE_EN), + dfi_regs + DDRMON_CTRL); } static void rockchip_dfi_stop_hardware_counter(struct devfreq_event_dev *edev) @@ -91,7 +98,8 @@ static void rockchip_dfi_stop_hardware_counter(struct devfreq_event_dev *edev) struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); void __iomem *dfi_regs = dfi->regs; - writel_relaxed(SOFTWARE_DIS, dfi_regs + DDRMON_CTRL); + writel_relaxed(HIWORD_UPDATE(0, DDRMON_CTRL_SOFTWARE_EN), + dfi_regs + DDRMON_CTRL); } static void rockchip_dfi_read_counters(struct devfreq_event_dev *edev, struct dmc_count *count) From patchwork Fri Feb 3 12:50:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127466 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F27BAC61DA4 for ; Fri, 3 Feb 2023 12:57:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 03 Feb 2023 13:50:18 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWB-002OqB-Ol; Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000Zlc-2b; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 10/18] PM / devfreq: rockchip-dfi: Add RK3568 support Date: Fri, 3 Feb 2023 13:50:04 +0100 Message-Id: <20230203125012.3804008-11-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045028_165004_06D4AF5C X-CRM114-Status: GOOD ( 18.68 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org This adds RK3568 support to the DFI driver. The driver itself doesn't need a change, only initialization differs from the currently supported RK3399. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 24 ++++++++++++++++++++++++ include/soc/rockchip/rk3568_grf.h | 12 ++++++++++++ 2 files changed, 36 insertions(+) create mode 100644 include/soc/rockchip/rk3568_grf.h diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 035984d3c7b01..78cb594bd2a81 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -23,6 +23,7 @@ #include #include +#include #define DMC_MAX_CHANNELS 2 @@ -209,6 +210,24 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi) return 0; }; +static int rk3568_dfi_init(struct rockchip_dfi *dfi) +{ + struct regmap *regmap_pmu = dfi->regmap_pmu; + u32 reg2, reg3; + + regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG2, ®2); + regmap_read(regmap_pmu, RK3568_PMUGRF_OS_REG3, ®3); + + dfi->ddr_type = FIELD_GET(RK3568_PMUGRF_OS_REG2_DRAMTYPE_INFO, reg2); + + if (FIELD_GET(RK3568_PMUGRF_OS_REG3_SYSREG_VERSION, reg3) >= 0x3) + dfi->ddr_type |= FIELD_GET(RK3568_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3, reg3) << 3; + + dfi->channel_mask = 1; + + return 0; +}; + struct rockchip_dfi_devtype_data { int (*init)(struct rockchip_dfi *dfi); }; @@ -217,8 +236,13 @@ static struct rockchip_dfi_devtype_data rk3399_devtype_data = { .init = rk3399_dfi_init, }; +static struct rockchip_dfi_devtype_data rk3568_devtype_data = { + .init = rk3568_dfi_init, +}; + static const struct of_device_id rockchip_dfi_id_match[] = { { .compatible = "rockchip,rk3399-dfi", .data = &rk3399_devtype_data }, + { .compatible = "rockchip,rk3568-dfi", .data = &rk3568_devtype_data }, { }, }; MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match); diff --git a/include/soc/rockchip/rk3568_grf.h b/include/soc/rockchip/rk3568_grf.h new file mode 100644 index 0000000000000..575584e9d8834 --- /dev/null +++ b/include/soc/rockchip/rk3568_grf.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +#ifndef __SOC_RK3568_GRF_H +#define __SOC_RK3568_GRF_H + +#define RK3568_PMUGRF_OS_REG2 0x208 +#define RK3568_PMUGRF_OS_REG2_DRAMTYPE_INFO GENMASK(15, 13) + +#define RK3568_PMUGRF_OS_REG3 0x20c +#define RK3568_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3 GENMASK(13, 12) +#define RK3568_PMUGRF_OS_REG3_SYSREG_VERSION GENMASK(31, 28) + +#endif /* __SOC_RK3568_GRF_H */ From patchwork Fri Feb 3 12:50:05 2023 Content-Type: text/plain; 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Fri, 03 Feb 2023 13:50:17 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000Zll-3J; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 11/18] PM / devfreq: rockchip-dfi: Handle LPDDR2 correctly Date: Fri, 3 Feb 2023 13:50:05 +0100 Message-Id: <20230203125012.3804008-12-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045043_704522_0B48B014 X-CRM114-Status: GOOD ( 14.53 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org According to the downstream driver the DDRMON_CTRL_LPDDR23 bit must be set for both LPDDR2 and LPDDR3. Add the missing LPDDR2 case and while at it turn the if/else if/else into switch/case which makes it easier to read. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 78cb594bd2a81..92ee61c96a1a9 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -82,12 +82,19 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) writel_relaxed(HIWORD_UPDATE(0, 0xffff), dfi_regs + DDRMON_CTRL); /* set ddr type to dfi */ - if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR3) + switch (dfi->ddr_type) { + case ROCKCHIP_DDRTYPE_LPDDR2: + case ROCKCHIP_DDRTYPE_LPDDR3: writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR23, DDRMON_CTRL_DDR_TYPE_MASK), dfi_regs + DDRMON_CTRL); - else if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR4) + break; + case ROCKCHIP_DDRTYPE_LPDDR4: writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR4, DDRMON_CTRL_DDR_TYPE_MASK), dfi_regs + DDRMON_CTRL); + break; + default: + break; + } /* enable count, use software mode */ writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_SOFTWARE_EN, DDRMON_CTRL_SOFTWARE_EN), From patchwork Fri Feb 3 12:50:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127461 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E9735C61DA4 for ; Fri, 3 Feb 2023 12:55:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 03 Feb 2023 13:50:18 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWC-002OqI-0B; Fri, 03 Feb 2023 13:50:17 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000Zlp-3u; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 12/18] PM / devfreq: rockchip-dfi: Handle LPDDR4X Date: Fri, 3 Feb 2023 13:50:06 +0100 Message-Id: <20230203125012.3804008-13-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045028_141854_753C89E7 X-CRM114-Status: GOOD ( 14.04 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org In the DFI driver LPDDR4X can be handled in the same way as LPDDR4. Add the missing case. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 1 + include/soc/rockchip/rockchip_grf.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index 92ee61c96a1a9..dc48d9c26f599 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -89,6 +89,7 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) dfi_regs + DDRMON_CTRL); break; case ROCKCHIP_DDRTYPE_LPDDR4: + case ROCKCHIP_DDRTYPE_LPDDR4X: writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR4, DDRMON_CTRL_DDR_TYPE_MASK), dfi_regs + DDRMON_CTRL); break; diff --git a/include/soc/rockchip/rockchip_grf.h b/include/soc/rockchip/rockchip_grf.h index dc77bb762a05a..7150a3362b142 100644 --- a/include/soc/rockchip/rockchip_grf.h +++ b/include/soc/rockchip/rockchip_grf.h @@ -11,5 +11,6 @@ #define ROCKCHIP_DDRTYPE_LPDDR2 5 #define ROCKCHIP_DDRTYPE_LPDDR3 6 #define ROCKCHIP_DDRTYPE_LPDDR4 7 +#define ROCKCHIP_DDRTYPE_LPDDR4X 8 #endif /* __SOC_ROCKCHIP_GRF_H */ From patchwork Fri Feb 3 12:50:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127467 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CAB3FC05027 for ; Fri, 3 Feb 2023 12:58:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ozR3bf5qaZ16RC4KudsrHNE3BvJKIbCyYS8cVLKH5zU=; 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Fri, 03 Feb 2023 13:50:17 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000Zlw-4W; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 13/18] PM / devfreq: rockchip-dfi: Pass private data struct to internal functions Date: Fri, 3 Feb 2023 13:50:07 +0100 Message-Id: <20230203125012.3804008-14-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045035_845062_EEC0C9B5 X-CRM114-Status: GOOD ( 15.53 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The internal functions do not need the struct devfreq_event_dev *, so pass them the struct rockchip_dfi *. This is a preparation for adding perf support later which doesn't have a struct devfreq_event_dev *. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index dc48d9c26f599..c0b7b1e9805e9 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -73,9 +73,8 @@ struct rockchip_dfi { unsigned int channel_mask; }; -static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) +static void rockchip_dfi_start_hardware_counter(struct rockchip_dfi *dfi) { - struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); void __iomem *dfi_regs = dfi->regs; /* clear DDRMON_CTRL setting */ @@ -102,18 +101,16 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev) dfi_regs + DDRMON_CTRL); } -static void rockchip_dfi_stop_hardware_counter(struct devfreq_event_dev *edev) +static void rockchip_dfi_stop_hardware_counter(struct rockchip_dfi *dfi) { - struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); void __iomem *dfi_regs = dfi->regs; writel_relaxed(HIWORD_UPDATE(0, DDRMON_CTRL_SOFTWARE_EN), dfi_regs + DDRMON_CTRL); } -static void rockchip_dfi_read_counters(struct devfreq_event_dev *edev, struct dmc_count *count) +static void rockchip_dfi_read_counters(struct rockchip_dfi *dfi, struct dmc_count *count) { - struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); u32 i; void __iomem *dfi_regs = dfi->regs; @@ -131,7 +128,7 @@ static int rockchip_dfi_disable(struct devfreq_event_dev *edev) { struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); - rockchip_dfi_stop_hardware_counter(edev); + rockchip_dfi_stop_hardware_counter(dfi); clk_disable_unprepare(dfi->clk); return 0; @@ -148,7 +145,7 @@ static int rockchip_dfi_enable(struct devfreq_event_dev *edev) return ret; } - rockchip_dfi_start_hardware_counter(edev); + rockchip_dfi_start_hardware_counter(dfi); return 0; } @@ -166,7 +163,7 @@ static int rockchip_dfi_get_event(struct devfreq_event_dev *edev, u32 access = 0, total = 0; int i; - rockchip_dfi_read_counters(edev, &count); + rockchip_dfi_read_counters(dfi, &count); /* We can only report one channel, so find the busiest one */ for (i = 0; i < DMC_MAX_CHANNELS; i++) { From patchwork Fri Feb 3 12:50:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127482 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DFD9EC61DA4 for ; Fri, 3 Feb 2023 13:01:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 03 Feb 2023 13:50:15 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000Zm5-5B; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 14/18] PM / devfreq: rockchip-dfi: Prepare for multiple users Date: Fri, 3 Feb 2023 13:50:08 +0100 Message-Id: <20230203125012.3804008-15-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_125015_340331_FD74BAF2 X-CRM114-Status: GOOD ( 19.81 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org When adding perf support later the DFI must be enabled when either of devfreq-event or perf is active. Prepare for that by adding a usage counter for the DFI. Also move enabling and disabling of the clock away from the devfreq-event specific functions to which the perf specific part won't have access. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 57 +++++++++++++++++++--------- 1 file changed, 40 insertions(+), 17 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index c0b7b1e9805e9..eae010644935a 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -69,13 +69,28 @@ struct rockchip_dfi { void __iomem *regs; struct regmap *regmap_pmu; struct clk *clk; + int usecount; + struct mutex mutex; u32 ddr_type; unsigned int channel_mask; }; -static void rockchip_dfi_start_hardware_counter(struct rockchip_dfi *dfi) +static int rockchip_dfi_enable(struct rockchip_dfi *dfi) { void __iomem *dfi_regs = dfi->regs; + int ret = 0; + + mutex_lock(&dfi->mutex); + + dfi->usecount++; + if (dfi->usecount > 1) + goto out; + + ret = clk_prepare_enable(dfi->clk); + if (ret) { + dev_err(&dfi->edev->dev, "failed to enable dfi clk: %d\n", ret); + goto out; + } /* clear DDRMON_CTRL setting */ writel_relaxed(HIWORD_UPDATE(0, 0xffff), dfi_regs + DDRMON_CTRL); @@ -99,14 +114,30 @@ static void rockchip_dfi_start_hardware_counter(struct rockchip_dfi *dfi) /* enable count, use software mode */ writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_SOFTWARE_EN, DDRMON_CTRL_SOFTWARE_EN), dfi_regs + DDRMON_CTRL); +out: + mutex_unlock(&dfi->mutex); + + return ret; } -static void rockchip_dfi_stop_hardware_counter(struct rockchip_dfi *dfi) +static void rockchip_dfi_disable(struct rockchip_dfi *dfi) { void __iomem *dfi_regs = dfi->regs; + mutex_lock(&dfi->mutex); + + dfi->usecount--; + + WARN_ON_ONCE(dfi->usecount < 0); + + if (dfi->usecount > 0) + goto out; + writel_relaxed(HIWORD_UPDATE(0, DDRMON_CTRL_SOFTWARE_EN), dfi_regs + DDRMON_CTRL); + clk_disable_unprepare(dfi->clk); +out: + mutex_unlock(&dfi->mutex); } static void rockchip_dfi_read_counters(struct rockchip_dfi *dfi, struct dmc_count *count) @@ -124,29 +155,20 @@ static void rockchip_dfi_read_counters(struct rockchip_dfi *dfi, struct dmc_coun } } -static int rockchip_dfi_disable(struct devfreq_event_dev *edev) +static int rockchip_dfi_event_disable(struct devfreq_event_dev *edev) { struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); - rockchip_dfi_stop_hardware_counter(dfi); - clk_disable_unprepare(dfi->clk); + rockchip_dfi_disable(dfi); return 0; } -static int rockchip_dfi_enable(struct devfreq_event_dev *edev) +static int rockchip_dfi_event_enable(struct devfreq_event_dev *edev) { struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev); - int ret; - - ret = clk_prepare_enable(dfi->clk); - if (ret) { - dev_err(&edev->dev, "failed to enable dfi clk: %d\n", ret); - return ret; - } - rockchip_dfi_start_hardware_counter(dfi); - return 0; + return rockchip_dfi_enable(dfi); } static int rockchip_dfi_set_event(struct devfreq_event_dev *edev) @@ -190,8 +212,8 @@ static int rockchip_dfi_get_event(struct devfreq_event_dev *edev, } static const struct devfreq_event_ops rockchip_dfi_ops = { - .disable = rockchip_dfi_disable, - .enable = rockchip_dfi_enable, + .disable = rockchip_dfi_event_disable, + .enable = rockchip_dfi_event_enable, .get_event = rockchip_dfi_get_event, .set_event = rockchip_dfi_set_event, }; @@ -285,6 +307,7 @@ static int rockchip_dfi_probe(struct platform_device *pdev) return PTR_ERR(dfi->regmap_pmu); dfi->dev = dev; + mutex_init(&dfi->mutex); desc = &dfi->desc; desc->ops = &rockchip_dfi_ops; From patchwork Fri Feb 3 12:50:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127479 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 72C10C05027 for ; Fri, 3 Feb 2023 12:59:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Fri, 03 Feb 2023 13:50:18 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWC-002OqN-56; Fri, 03 Feb 2023 13:50:17 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000ZmE-5y; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 15/18] PM / devfreq: rockchip-dfi: Add perf support Date: Fri, 3 Feb 2023 13:50:09 +0100 Message-Id: <20230203125012.3804008-16-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045036_168129_0DFFFE34 X-CRM114-Status: GOOD ( 30.80 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The DFI is a unit which is suitable for measuring DDR utilization, but so far it could only be used as an event driver for the DDR frequency scaling driver. This adds perf support to the DFI driver. Usage with the 'perf' tool can look like: perf stat -a -e rockchip_ddr/cycles/,\ rockchip_ddr/read-bytes/,\ rockchip_ddr/write-bytes/,\ rockchip_ddr/bytes/ sleep 1 Performance counter stats for 'system wide': 1582524826 rockchip_ddr/cycles/ 1802.25 MB rockchip_ddr/read-bytes/ 1793.72 MB rockchip_ddr/write-bytes/ 3595.90 MB rockchip_ddr/bytes/ 1.014369709 seconds time elapsed perf support has been tested on a RK3568 and a RK3399, the latter with dual channel DDR. Signed-off-by: Sascha Hauer --- drivers/devfreq/event/rockchip-dfi.c | 349 +++++++++++++++++++++++++++ include/soc/rockchip/rk3399_grf.h | 2 + include/soc/rockchip/rk3568_grf.h | 1 + 3 files changed, 352 insertions(+) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index eae010644935a..400b1b360e3c9 100644 --- a/drivers/devfreq/event/rockchip-dfi.c +++ b/drivers/devfreq/event/rockchip-dfi.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include @@ -41,14 +42,30 @@ DDRMON_CTRL_LPDDR4 | \ DDRMON_CTRL_LPDDR23) +#define DDRMON_CH0_WR_NUM 0x20 +#define DDRMON_CH0_RD_NUM 0x24 #define DDRMON_CH0_COUNT_NUM 0x28 #define DDRMON_CH0_DFI_ACCESS_NUM 0x2c #define DDRMON_CH1_COUNT_NUM 0x3c #define DDRMON_CH1_DFI_ACCESS_NUM 0x40 +enum access_type { + PERF_EVENT_CYCLES, + PERF_EVENT_READ_BYTES, + PERF_EVENT_WRITE_BYTES, + PERF_EVENT_BYTES, + PERF_ACCESS_TYPE_MAX, +}; + struct dmc_count_channel { u32 access; u32 total; + u32 read_access; + u32 write_access; +}; + +struct dmc_count_channel64 { + u64 count[PERF_ACCESS_TYPE_MAX]; }; struct dmc_count { @@ -65,6 +82,7 @@ struct rockchip_dfi { struct devfreq_event_desc desc; struct dmc_count count; struct dmc_count last_event_count; + struct dmc_count last; struct device *dev; void __iomem *regs; struct regmap *regmap_pmu; @@ -73,6 +91,15 @@ struct rockchip_dfi { struct mutex mutex; u32 ddr_type; unsigned int channel_mask; + enum cpuhp_state cpuhp_state; + struct hlist_node node; + struct pmu pmu; + struct hrtimer timer; + unsigned int cpu; + struct dmc_count_channel64 frr; + int active_events; + int burst_len; + int buswidth[DMC_MAX_CHANNELS]; }; static int rockchip_dfi_enable(struct rockchip_dfi *dfi) @@ -148,6 +175,10 @@ static void rockchip_dfi_read_counters(struct rockchip_dfi *dfi, struct dmc_coun for (i = 0; i < DMC_MAX_CHANNELS; i++) { if (!(dfi->channel_mask & BIT(i))) continue; + count->c[i].read_access = readl_relaxed(dfi_regs + + DDRMON_CH0_RD_NUM + i * 20); + count->c[i].write_access = readl_relaxed(dfi_regs + + DDRMON_CH0_WR_NUM + i * 20); count->c[i].access = readl_relaxed(dfi_regs + DDRMON_CH0_DFI_ACCESS_NUM + i * 20); count->c[i].total = readl_relaxed(dfi_regs + @@ -218,6 +249,305 @@ static const struct devfreq_event_ops rockchip_dfi_ops = { .set_event = rockchip_dfi_set_event, }; +#ifdef CONFIG_PERF_EVENTS + +static ssize_t ddr_perf_cpumask_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct pmu *pmu = dev_get_drvdata(dev); + struct rockchip_dfi *dfi = container_of(pmu, struct rockchip_dfi, pmu); + + return cpumap_print_to_pagebuf(true, buf, cpumask_of(dfi->cpu)); +} + +static struct device_attribute ddr_perf_cpumask_attr = + __ATTR(cpumask, 0444, ddr_perf_cpumask_show, NULL); + +static struct attribute *ddr_perf_cpumask_attrs[] = { + &ddr_perf_cpumask_attr.attr, + NULL, +}; + +static const struct attribute_group ddr_perf_cpumask_attr_group = { + .attrs = ddr_perf_cpumask_attrs, +}; + +PMU_EVENT_ATTR_STRING(cycles, ddr_pmu_cycles, "event=0x00") + +PMU_EVENT_ATTR_STRING(read-bytes, ddr_pmu_read_bytes, "event=0x01") +PMU_EVENT_ATTR_STRING(read-bytes.unit, ddr_pmu_read_bytes_unit, "MB"); +PMU_EVENT_ATTR_STRING(read-bytes.scale, ddr_pmu_read_bytes_scale, "9.536743164e-07"); + +PMU_EVENT_ATTR_STRING(write-bytes, ddr_pmu_write_bytes, "event=0x02") +PMU_EVENT_ATTR_STRING(write-bytes.unit, ddr_pmu_write_bytes_unit, "MB"); +PMU_EVENT_ATTR_STRING(write-bytes.scale, ddr_pmu_write_bytes_scale, "9.536743164e-07"); + +PMU_EVENT_ATTR_STRING(bytes, ddr_pmu_bytes, "event=0x03") +PMU_EVENT_ATTR_STRING(bytes.unit, ddr_pmu_bytes_unit, "MB"); +PMU_EVENT_ATTR_STRING(bytes.scale, ddr_pmu_bytes_scale, "9.536743164e-07"); + +static struct attribute *ddr_perf_events_attrs[] = { + &ddr_pmu_cycles.attr.attr, + &ddr_pmu_read_bytes.attr.attr, + &ddr_pmu_read_bytes_unit.attr.attr, + &ddr_pmu_read_bytes_scale.attr.attr, + &ddr_pmu_write_bytes.attr.attr, + &ddr_pmu_write_bytes_unit.attr.attr, + &ddr_pmu_write_bytes_scale.attr.attr, + &ddr_pmu_bytes.attr.attr, + &ddr_pmu_bytes_unit.attr.attr, + &ddr_pmu_bytes_scale.attr.attr, + NULL, +}; + +static const struct attribute_group ddr_perf_events_attr_group = { + .name = "events", + .attrs = ddr_perf_events_attrs, +}; + +PMU_FORMAT_ATTR(event, "config:0-7"); + +static struct attribute *ddr_perf_format_attrs[] = { + &format_attr_event.attr, + NULL, +}; + +static const struct attribute_group ddr_perf_format_attr_group = { + .name = "format", + .attrs = ddr_perf_format_attrs, +}; + +static const struct attribute_group *attr_groups[] = { + &ddr_perf_events_attr_group, + &ddr_perf_cpumask_attr_group, + &ddr_perf_format_attr_group, + NULL, +}; + +static int rockchip_ddr_perf_event_init(struct perf_event *event) +{ + struct rockchip_dfi *dfi = container_of(event->pmu, struct rockchip_dfi, pmu); + + if (event->attr.type != event->pmu->type) + return -ENOENT; + + if (event->attach_state & PERF_ATTACH_TASK) + return -EOPNOTSUPP; + + if (event->cpu < 0) { + dev_warn(dfi->dev, "Can't provide per-task data!\n"); + return -EOPNOTSUPP; + } + + return 0; +} + +static void rockchip_ddr_perf_update_counters(struct rockchip_dfi *dfi) +{ + struct dmc_count count; + struct dmc_count *last = &dfi->last; + int blen = dfi->burst_len; + u32 diff; + int i; + + rockchip_dfi_read_counters(dfi, &count); + + diff = count.c[0].total - last->c[0].total; + dfi->frr.count[PERF_EVENT_CYCLES] += diff; + + for (i = 0; i < DMC_MAX_CHANNELS; i++) { + if (!(dfi->channel_mask & BIT(i))) + continue; + + diff = count.c[i].read_access - last->c[i].read_access; + dfi->frr.count[PERF_EVENT_READ_BYTES] += (u64)diff * blen * dfi->buswidth[i]; + + diff = count.c[i].write_access - last->c[i].write_access; + dfi->frr.count[PERF_EVENT_WRITE_BYTES] += (u64)diff * blen * dfi->buswidth[i]; + + diff = count.c[i].access - last->c[i].access; + dfi->frr.count[PERF_EVENT_BYTES] += (u64)diff * blen * dfi->buswidth[i]; + } + + dfi->last = count; +} + +static void rockchip_ddr_perf_event_update(struct perf_event *event) +{ + struct rockchip_dfi *dfi = container_of(event->pmu, struct rockchip_dfi, pmu); + s64 prev; + u64 now; + + rockchip_ddr_perf_update_counters(dfi); + + now = dfi->frr.count[event->attr.config]; + prev = local64_xchg(&event->hw.prev_count, now); + local64_add(now - prev, &event->count); +} + +static void rockchip_ddr_perf_event_start(struct perf_event *event, int flags) +{ + struct rockchip_dfi *dfi = container_of(event->pmu, struct rockchip_dfi, pmu); + + rockchip_ddr_perf_update_counters(dfi); + + local64_set(&event->hw.prev_count, dfi->frr.count[event->attr.config]); +} + +static int rockchip_ddr_perf_event_add(struct perf_event *event, int flags) +{ + struct rockchip_dfi *dfi = container_of(event->pmu, struct rockchip_dfi, pmu); + struct hw_perf_event *hwc = &event->hw; + + hwc->state |= PERF_HES_STOPPED; + + dfi->active_events++; + + if (dfi->active_events == 1) { + rockchip_dfi_enable(dfi); + hrtimer_start(&dfi->timer, 0, HRTIMER_MODE_REL); + } + + if (flags & PERF_EF_START) + rockchip_ddr_perf_event_start(event, flags); + + return 0; +} + +static void rockchip_ddr_perf_event_stop(struct perf_event *event, int flags) +{ + rockchip_ddr_perf_event_update(event); +} + +static void rockchip_ddr_perf_event_del(struct perf_event *event, int flags) +{ + struct rockchip_dfi *dfi = container_of(event->pmu, struct rockchip_dfi, pmu); + + rockchip_ddr_perf_event_stop(event, PERF_EF_UPDATE); + + dfi->active_events--; + + if (dfi->active_events == 0) { + hrtimer_cancel(&dfi->timer); + rockchip_dfi_disable(dfi); + } +} + +static enum hrtimer_restart rockchip_dfi_timer(struct hrtimer *timer) +{ + struct rockchip_dfi *dfi = container_of(timer, struct rockchip_dfi, timer); + ktime_t timeout; + + rockchip_ddr_perf_update_counters(dfi); + + timeout = ns_to_ktime(NSEC_PER_SEC); + hrtimer_forward_now(&dfi->timer, timeout); + + return HRTIMER_RESTART; +}; + +static int ddr_perf_offline_cpu(unsigned int cpu, struct hlist_node *node) +{ + struct rockchip_dfi *dfi = hlist_entry_safe(node, struct rockchip_dfi, node); + int target; + + if (cpu != dfi->cpu) + return 0; + + target = cpumask_any_but(cpu_online_mask, cpu); + if (target >= nr_cpu_ids) + return 0; + + perf_pmu_migrate_context(&dfi->pmu, cpu, target); + dfi->cpu = target; + + return 0; +} + +static int rockchip_ddr_perf_init(struct rockchip_dfi *dfi) +{ + struct pmu *pmu = &dfi->pmu; + int ret; + + pmu->module = THIS_MODULE; + pmu->capabilities = PERF_PMU_CAP_NO_EXCLUDE; + pmu->task_ctx_nr = perf_invalid_context; + pmu->attr_groups = attr_groups; + pmu->event_init = rockchip_ddr_perf_event_init; + pmu->add = rockchip_ddr_perf_event_add; + pmu->del = rockchip_ddr_perf_event_del; + pmu->start = rockchip_ddr_perf_event_start; + pmu->stop = rockchip_ddr_perf_event_stop; + pmu->read = rockchip_ddr_perf_event_update; + + dfi->cpu = raw_smp_processor_id(); + + ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, + "rockchip_ddr_perf_pmu", + NULL, + ddr_perf_offline_cpu); + + if (ret < 0) { + dev_err(dfi->dev, "cpuhp_setup_state_multi failed: %d\n", ret); + return ret; + } + + dfi->cpuhp_state = ret; + + /* Register the pmu instance for cpu hotplug */ + ret = cpuhp_state_add_instance_nocalls(dfi->cpuhp_state, &dfi->node); + if (ret) { + dev_err(dfi->dev, "Error %d registering hotplug\n", ret); + goto cpuhp_instance_err; + } + + hrtimer_init(&dfi->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + dfi->timer.function = rockchip_dfi_timer; + + switch (dfi->ddr_type) { + case ROCKCHIP_DDRTYPE_LPDDR2: + case ROCKCHIP_DDRTYPE_LPDDR3: + dfi->burst_len = 8; + break; + case ROCKCHIP_DDRTYPE_LPDDR4: + case ROCKCHIP_DDRTYPE_LPDDR4X: + dfi->burst_len = 16; + break; + } + + ret = perf_pmu_register(pmu, "rockchip_ddr", -1); + if (ret) + goto ddr_perf_err; + + return 0; + +ddr_perf_err: + cpuhp_state_remove_instance_nocalls(dfi->cpuhp_state, &dfi->node); +cpuhp_instance_err: + cpuhp_remove_multi_state(dfi->cpuhp_state); + + return ret; +} + +static void rockchip_ddr_perf_remove(struct rockchip_dfi *dfi) +{ + cpuhp_state_remove_instance_nocalls(dfi->cpuhp_state, &dfi->node); + cpuhp_remove_multi_state(dfi->cpuhp_state); + + perf_pmu_unregister(&dfi->pmu); +} + +#else +static int rockchip_ddr_perf_init(struct rockchip_dfi *dfi) +{ + return 0; +} + +static void rockchip_ddr_perf_remove(struct rockchip_dfi *dfi) +{ +} +#endif + static int rk3399_dfi_init(struct rockchip_dfi *dfi) { struct regmap *regmap_pmu = dfi->regmap_pmu; @@ -234,6 +564,9 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi) dfi->channel_mask = 3; + dfi->buswidth[0] = FIELD_GET(RK3399_PMUGRF_OS_REG2_BW_CH0, val) == 0 ? 4 : 2; + dfi->buswidth[1] = FIELD_GET(RK3399_PMUGRF_OS_REG2_BW_CH1, val) == 0 ? 4 : 2; + return 0; }; @@ -250,6 +583,8 @@ static int rk3568_dfi_init(struct rockchip_dfi *dfi) if (FIELD_GET(RK3568_PMUGRF_OS_REG3_SYSREG_VERSION, reg3) >= 0x3) dfi->ddr_type |= FIELD_GET(RK3568_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3, reg3) << 3; + dfi->buswidth[0] = FIELD_GET(RK3568_PMUGRF_OS_REG2_BW_CH0, reg2) == 0 ? 4 : 2; + dfi->channel_mask = 1; return 0; @@ -325,13 +660,27 @@ static int rockchip_dfi_probe(struct platform_device *pdev) return PTR_ERR(dfi->edev); } + ret = rockchip_ddr_perf_init(dfi); + if (ret) + return ret; + platform_set_drvdata(pdev, dfi); return 0; } +static int rockchip_dfi_remove(struct platform_device *pdev) +{ + struct rockchip_dfi *dfi = platform_get_drvdata(pdev); + + rockchip_ddr_perf_remove(dfi); + + return 0; +} + static struct platform_driver rockchip_dfi_driver = { .probe = rockchip_dfi_probe, + .remove = rockchip_dfi_remove, .driver = { .name = "rockchip-dfi", .of_match_table = rockchip_dfi_id_match, diff --git a/include/soc/rockchip/rk3399_grf.h b/include/soc/rockchip/rk3399_grf.h index 775f8444bea8d..39cd44cec982f 100644 --- a/include/soc/rockchip/rk3399_grf.h +++ b/include/soc/rockchip/rk3399_grf.h @@ -12,5 +12,7 @@ /* PMU GRF Registers */ #define RK3399_PMUGRF_OS_REG2 0x308 #define RK3399_PMUGRF_OS_REG2_DDRTYPE GENMASK(15, 13) +#define RK3399_PMUGRF_OS_REG2_BW_CH0 GENMASK(3, 2) +#define RK3399_PMUGRF_OS_REG2_BW_CH1 GENMASK(19, 18) #endif diff --git a/include/soc/rockchip/rk3568_grf.h b/include/soc/rockchip/rk3568_grf.h index 575584e9d8834..52853efd6720e 100644 --- a/include/soc/rockchip/rk3568_grf.h +++ b/include/soc/rockchip/rk3568_grf.h @@ -4,6 +4,7 @@ #define RK3568_PMUGRF_OS_REG2 0x208 #define RK3568_PMUGRF_OS_REG2_DRAMTYPE_INFO GENMASK(15, 13) +#define RK3568_PMUGRF_OS_REG2_BW_CH0 GENMASK(3, 2) #define RK3568_PMUGRF_OS_REG3 0x20c #define RK3568_PMUGRF_OS_REG3_DRAMTYPE_INFO_V3 GENMASK(13, 12) From patchwork Fri Feb 3 12:50:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127427 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E55ABC61DA4 for ; Fri, 3 Feb 2023 12:51:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=EwzPbg+E0UzSYWNPWMDBjPDX2juzjWxZoI9089soYQc=; 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Fri, 03 Feb 2023 13:50:15 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000ZmM-76; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 16/18] arm64: dts: rockchip: rk3399: Enable DFI Date: Fri, 3 Feb 2023 13:50:10 +0100 Message-Id: <20230203125012.3804008-17-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045020_180235_A6B99AA7 X-CRM114-Status: GOOD ( 12.35 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org the DFI unit can provide useful data for measuring DDR utilization and works without any configuration from the board, so enable it in the dtsi file directly. Signed-off-by: Sascha Hauer --- arch/arm64/boot/dts/rockchip/rk3399.dtsi | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi index 4391aea25984b..077bb19664c06 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi @@ -1331,7 +1331,6 @@ dfi: dfi@ff630000 { interrupts = ; clocks = <&cru PCLK_DDR_MON>; clock-names = "pclk_ddr_mon"; - status = "disabled"; }; vpu: video-codec@ff650000 { From patchwork Fri Feb 3 12:50:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127464 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5D1BBC636D4 for ; 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Fri, 03 Feb 2023 12:49:56 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pNvWI-0000bU-GK; Fri, 03 Feb 2023 13:50:22 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWB-002Oq3-Jd; Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000ZmV-7v; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 17/18] arm64: dts: rockchip: rk356x: Add DFI Date: Fri, 3 Feb 2023 13:50:11 +0100 Message-Id: <20230203125012.3804008-18-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_124952_629571_9091308A X-CRM114-Status: GOOD ( 11.96 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The DFI unit can be used to measure DRAM utilization using perf. Add the node to the device tree. Signed-off-by: Sascha Hauer --- arch/arm64/boot/dts/rockchip/rk356x.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi index 5706c3e24f0a0..8d818b98a5e65 100644 --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi @@ -947,6 +947,12 @@ qos_vop_m1: qos@fe1a8100 { reg = <0x0 0xfe1a8100 0x0 0x20>; }; + dfi: dfi@fe230000 { + compatible = "rockchip,rk3568-dfi"; + reg = <0x00 0xfe230000 0x00 0x400>; + rockchip,pmu = <&pmugrf>; + }; + pcie2x1: pcie@fe260000 { compatible = "rockchip,rk3568-pcie"; reg = <0x3 0xc0000000 0x0 0x00400000>, From patchwork Fri Feb 3 12:50:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13127432 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 11350C61DA4 for ; Fri, 3 Feb 2023 12:52:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=X2O08aSagv2BFuJk5gbGJ5pUnEljVCzEFtR3yDQycg0=; b=tpkWU6MmbCh6GS exdHDi3QmeohiogtGIEAm56T4YpkT2iEDNOMHore3FCVQID7dH+43MweZ8bYd/dwtH6LYq0bpbEQe 6sDiSkqqrfswKU6mlyEJdfTSHuZX9EEfe1PoW4oVlZv4FvrWDXu5utF/2fMggMMFnbxuLoNn3pbDb nFsZNGUdCGn+SL4A1x8yydmZIsj02s9lZhC31mxLVO0Cx8Z6yw91INhX3K/0amtl1gvUxCeCDfDlO o9lNRdL9QX9dhCyJ+yNIC+spmfs5flczlspB1vVPN54Q3P6BTNAV8ank6vR5aiet5zo1IclPlnu07 XZOeBPrAXAQ7vs2bQdaQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvYS-001rBP-4j; Fri, 03 Feb 2023 12:52:36 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNvWJ-001pur-NA for linux-rockchip@lists.infradead.org; Fri, 03 Feb 2023 12:50:26 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pNvWI-0000bT-Em; Fri, 03 Feb 2023 13:50:22 +0100 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pNvWB-002Oq1-Hs; Fri, 03 Feb 2023 13:50:16 +0100 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pNvWA-000ZmY-8e; Fri, 03 Feb 2023 13:50:14 +0100 From: Sascha Hauer To: linux-pm@vger.kernel.org Cc: linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pegutronix.de, Michael Riesch , Sascha Hauer Subject: [PATCH 18/18] dt-bindings: devfreq: event: convert Rockchip DFI binding to yaml Date: Fri, 3 Feb 2023 13:50:12 +0100 Message-Id: <20230203125012.3804008-19-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230203125012.3804008-1-s.hauer@pengutronix.de> References: <20230203125012.3804008-1-s.hauer@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: sha@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_045023_841883_BB329E57 X-CRM114-Status: GOOD ( 17.27 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Convert the Rockchip DFI binding to yaml. While at it add the newly supported rk3568-dfi to the binding. Signed-off-by: Sascha Hauer --- .../bindings/devfreq/event/rockchip-dfi.txt | 18 --------- .../bindings/devfreq/event/rockchip-dfi.yaml | 38 +++++++++++++++++++ 2 files changed, 38 insertions(+), 18 deletions(-) delete mode 100644 Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.txt create mode 100644 Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.yaml diff --git a/Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.txt b/Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.txt deleted file mode 100644 index 148191b0fc158..0000000000000 --- a/Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.txt +++ /dev/null @@ -1,18 +0,0 @@ - -* Rockchip rk3399 DFI device - -Required properties: -- compatible: Must be "rockchip,rk3399-dfi". -- reg: physical base address of each DFI and length of memory mapped region -- rockchip,pmu: phandle to the syscon managing the "pmu general register files" -- clocks: phandles for clock specified in "clock-names" property -- clock-names : the name of clock used by the DFI, must be "pclk_ddr_mon"; - -Example: - dfi: dfi@ff630000 { - compatible = "rockchip,rk3399-dfi"; - reg = <0x00 0xff630000 0x00 0x4000>; - rockchip,pmu = <&pmugrf>; - clocks = <&cru PCLK_DDR_MON>; - clock-names = "pclk_ddr_mon"; - }; diff --git a/Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.yaml b/Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.yaml new file mode 100644 index 0000000000000..e082a0df7895a --- /dev/null +++ b/Documentation/devicetree/bindings/devfreq/event/rockchip-dfi.yaml @@ -0,0 +1,38 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/devfreq/event/rockchip-dfi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip DFI + +maintainers: + - Sascha Hauer + +properties: + compatible: + enum: + - rk3399-dfi + - rk3568-dfi + + clocks: + maxItems: 1 + + rockchip,pmu: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the syscon managing the "PMU general register files". + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + dfi: dfi@fe230000 { + compatible = "rockchip,rk3568-dfi"; + reg = <0x00 0xfe230000 0x00 0x400>; + rockchip,pmu = <&pmugrf>; + };