From patchwork Wed May 24 08:31:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sascha Hauer X-Patchwork-Id: 13253508 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9BC2C77B73 for ; Wed, 24 May 2023 08:33:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240199AbjEXIdD (ORCPT ); Wed, 24 May 2023 04:33:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44548 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240237AbjEXIcz (ORCPT ); Wed, 24 May 2023 04:32:55 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9BFB195 for ; Wed, 24 May 2023 01:32:37 -0700 (PDT) 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 1q1juY-0002lB-Tq; Wed, 24 May 2023 10:31:58 +0200 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 1q1juX-002RZa-UZ; Wed, 24 May 2023 10:31:57 +0200 Received: from sha by dude02.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1q1juW-009j4L-43; Wed, 24 May 2023 10:31:56 +0200 From: Sascha Hauer To: linux-rockchip@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Heiko Stuebner , Kyungmin Park , MyungJoo Ham , Will Deacon , Mark Rutland , kernel@pengutronix.de, Michael Riesch , Robin Murphy , Vincent Legoll , Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org, Sascha Hauer Subject: [PATCH v5 04/25] PM / devfreq: rockchip-dfi: Add SoC specific init function Date: Wed, 24 May 2023 10:31:32 +0200 Message-Id: <20230524083153.2046084-5-s.hauer@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230524083153.2046084-1-s.hauer@pengutronix.de> References: <20230524083153.2046084-1-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-pm@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.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 Reviewed-by: Sebastian Reichel --- Notes: Changes since v4: - use of_device_get_match_data() - use a callback rather than a struct type as driver data drivers/devfreq/event/rockchip-dfi.c | 48 +++++++++++++++++++--------- 1 file changed, 33 insertions(+), 15 deletions(-) diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c index e19e5acaa362c..6b1ef29df7048 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 +162,26 @@ 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; +}; + static const struct of_device_id rockchip_dfi_id_match[] = { - { .compatible = "rockchip,rk3399-dfi" }, + { .compatible = "rockchip,rk3399-dfi", .data = rk3399_dfi_init }, { }, }; MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match); @@ -179,6 +192,12 @@ 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; + int (*soc_init)(struct rockchip_dfi *dfi); + int ret; + + soc_init = of_device_get_match_data(&pdev->dev); + if (!soc_init) + return -EINVAL; dfi = devm_kzalloc(dev, sizeof(*dfi), GFP_KERNEL); if (!dfi) @@ -188,11 +207,6 @@ 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"); @@ -209,6 +223,10 @@ static int rockchip_dfi_probe(struct platform_device *pdev) desc->driver_data = dfi; desc->name = np->name; + ret = soc_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,