From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 068D916427 for ; Wed, 18 Oct 2023 14:58:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QgD7Pp0V" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C479C433C8; Wed, 18 Oct 2023 14:58:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1697641114; bh=mnkWVLZ9Y8i+zHIjgcDkOug6dQ2uTfJgT66hAd4Xvtc=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=QgD7Pp0V88krqY1oBxYwCS92ixQo//Vwtp9jh845KAT3jF0gjvx/sdf/eWVTjqp83 +4VnOiVvJXRFRw43u0361PDY+WRPV5hWUmzJHadC8QHcBqN05SaiTyeGOXCaHKYXgP m3VI06pLpPTyEEZZG9uygZPgN3NCDU6kDPWwL3Q90Ex2MK4jUKcJopZoUo6D9BgNr5 ylCytT9ugsX064yE+6RY6RRHqD5KHEOVIOHG0ehig1GR+hVtfemlIJxvJZzSkcrXnM NCGgYsYIEloCPy0TreK0hNLprCrp/8mRbWXvmfMmFmqTRxstrHxWRTSwPKvIHKHqKL NnTAybN5AQDwA== Message-ID: <115e3643-d290-492c-926a-e11e9964ed3a@kernel.org> Date: Wed, 18 Oct 2023 23:58:25 +0900 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v8 04/26] PM / devfreq: rockchip-dfi: Add SoC specific init function Content-Language: en-US To: Sascha Hauer , 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, Sebastian Reichel References: <20231018061714.3553817-1-s.hauer@pengutronix.de> <20231018061714.3553817-5-s.hauer@pengutronix.de> From: Chanwoo Choi In-Reply-To: <20231018061714.3553817-5-s.hauer@pengutronix.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 23. 10. 18. 15:16, Sascha Hauer wrote: > Move the RK3399 specifics to a SoC specific init function to make > the way free for supporting other SoCs later. > > Reviewed-by: Sebastian Reichel > Signed-off-by: Sascha Hauer > --- > > 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, Already applied it on v7. -- Best Regards, Samsung Electronics Chanwoo Choi