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From: CK Hu <ck.hu@mediatek.com>
To: <matthias.bgg@kernel.org>
Cc: <robh+dt@kernel.org>, <mark.rutland@arm.com>,
	<p.zabel@pengutronix.de>, <airlied@linux.ie>,
	<mturquette@baylibre.com>, <sboyd@kernel.org>,
	<ulrich.hecht+renesas@gmail.com>,
	<laurent.pinchart@ideasonboard.com>,
	<enric.balletbo@collabora.com>, <sean.wang@mediatek.com>,
	<sean.wang@kernel.org>, <rdunlap@infradead.org>, <wens@csie.org>,
	<hsinyi@chromium.org>, <frank-w@public-files.de>,
	<drinkcat@chromium.org>, <linux-media@vger.kernel.org>,
	<dri-devel@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>, <linux-clk@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <mbrugger@suse.com>
Subject: Re: [resend PATCH v6 10/12] clk: mediatek: mt8183: switch mmsys to platform device probing
Date: Mon, 9 Dec 2019 16:51:11 +0800
Message-ID: <1575881471.14479.2.camel@mtksdaap41> (raw)
In-Reply-To: <20191207224740.24536-11-matthias.bgg@kernel.org>

Hi, Matthias:

On Sat, 2019-12-07 at 23:47 +0100, matthias.bgg@kernel.org wrote:
> From: Matthias Brugger <mbrugger@suse.com>
> 
> Switch probing for the MMSYS to support invocation to a
> plain paltform device. The driver will be probed by the DRM subsystem.
> 
> Singed-off-by: Matthias Brugger <mbrugger@suse.com>
> ---
>  drivers/clk/mediatek/clk-mt8183-mm.c | 39 +++++++++++++++++++---------
>  1 file changed, 27 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/clk/mediatek/clk-mt8183-mm.c b/drivers/clk/mediatek/clk-mt8183-mm.c
> index 720c696b506d..e6dcad18d81a 100644
> --- a/drivers/clk/mediatek/clk-mt8183-mm.c
> +++ b/drivers/clk/mediatek/clk-mt8183-mm.c
> @@ -3,14 +3,20 @@
>  // Copyright (c) 2018 MediaTek Inc.
>  // Author: Weiyi Lu <weiyi.lu@mediatek.com>
>  
> +#include <linux/module.h>
>  #include <linux/clk-provider.h>
>  #include <linux/platform_device.h>
> +#include <linux/slab.h>
>  
>  #include "clk-mtk.h"
>  #include "clk-gate.h"
>  
>  #include <dt-bindings/clock/mt8183-clk.h>
>  
> +struct clk_mt8183_mm_priv {
> +	struct clk_onecell_data *clk_data;
> +};
> +
>  static const struct mtk_gate_regs mm0_cg_regs = {
>  	.set_ofs = 0x104,
>  	.clr_ofs = 0x108,
> @@ -84,28 +90,37 @@ static const struct mtk_gate mm_clks[] = {
>  
>  static int clk_mt8183_mm_probe(struct platform_device *pdev)
>  {
> -	struct clk_onecell_data *clk_data;
> -	struct device_node *node = pdev->dev.of_node;
> +	struct clk_mt8183_mm_priv *private;
> +	struct device_node *node = pdev->dev.parent->of_node;
> +
> +	private = devm_kzalloc(&pdev->dev, sizeof(*private), GFP_KERNEL);
> +	if (!private)
> +		return -ENOMEM;
>  
> -	clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
> +	private->clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
> +	platform_set_drvdata(pdev, private);

There is a more simple modification that you need not to define struct
clk_mt8183_mm_priv,

clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
platform_set_drvdata(pdev, clk_data);

Regards,
CK

>  
>  	mtk_clk_register_gates(node, mm_clks, ARRAY_SIZE(mm_clks),
> -			clk_data);
> +			private->clk_data);
>  
> -	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
> +	return of_clk_add_provider(node, of_clk_src_onecell_get,
> +			private->clk_data);
>  }
>  
> -static const struct of_device_id of_match_clk_mt8183_mm[] = {
> -	{ .compatible = "mediatek,mt8183-mmsys", },
> -	{}
> -};
> +static int clk_mt8183_mm_remove(struct platform_device *pdev)
> +{
> +	struct clk_mt8183_mm_priv *private = platform_get_drvdata(pdev);
> +
> +	kfree(private->clk_data);
> +
> +	return 0;
> +}
>  
>  static struct platform_driver clk_mt8183_mm_drv = {
>  	.probe = clk_mt8183_mm_probe,
> +	.remove = clk_mt8183_mm_remove,
>  	.driver = {
>  		.name = "clk-mt8183-mm",
> -		.of_match_table = of_match_clk_mt8183_mm,
>  	},
>  };
> -
> -builtin_platform_driver(clk_mt8183_mm_drv);
> +module_platform_driver(clk_mt8183_mm_drv);


  reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-07 22:47 [resend PATCH v6 00/12] arm/arm64: mediatek: Fix mmsys " matthias.bgg
2019-12-07 22:47 ` [resend PATCH v6 01/12] dt-bindings: display: mediatek: Add mmsys binding description matthias.bgg
2019-12-09  5:12   ` CK Hu
2019-12-09  8:48     ` Enric Balletbo i Serra
2020-02-13 18:17     ` Matthias Brugger
2019-12-18 16:39   ` Rob Herring
2019-12-07 22:47 ` [resend PATCH v6 02/12] dt-bindings: mediatek: Add compatible for mt7623 matthias.bgg
2019-12-09  8:51   ` Enric Balletbo i Serra
2019-12-18 17:02   ` Rob Herring
2019-12-07 22:47 ` [resend PATCH v6 03/12] drm/mediatek: Use regmap for register access matthias.bgg
2019-12-09  5:16   ` CK Hu
2019-12-07 22:47 ` [resend PATCH v6 04/12] drm: mediatek: Omit warning on probe defers matthias.bgg
2019-12-09  5:19   ` CK Hu
2019-12-09  9:39   ` Enric Balletbo i Serra
2020-02-13 18:58     ` Matthias Brugger
2019-12-07 22:47 ` [resend PATCH v6 05/12] media: mtk-mdp: Check return value of of_clk_get matthias.bgg
2019-12-09  9:50   ` Enric Balletbo i Serra
2019-12-07 22:47 ` [resend PATCH v6 06/12] clk: mediatek: mt2701: switch mmsys to platform device probing matthias.bgg
2019-12-09  9:58   ` Enric Balletbo i Serra
2020-02-13 19:11     ` Matthias Brugger
2019-12-07 22:47 ` [resend PATCH v6 07/12] clk: mediatek: mt2712e: switch " matthias.bgg
2019-12-09  9:59   ` Enric Balletbo i Serra
2019-12-07 22:47 ` [resend PATCH v6 08/12] clk: mediatek: mt6779: switch mmsys " matthias.bgg
2019-12-09 10:01   ` Enric Balletbo i Serra
2019-12-07 22:47 ` [resend PATCH v6 09/12] clk: mediatek: mt6797: switch " matthias.bgg
2019-12-07 22:47 ` [resend PATCH v6 10/12] clk: mediatek: mt8183: switch mmsys " matthias.bgg
2019-12-09  8:51   ` CK Hu [this message]
2020-02-13 19:35     ` Matthias Brugger
2019-12-07 22:47 ` [resend PATCH v6 11/12] clk: mediatek: mt8173: " matthias.bgg
2019-12-07 22:47 ` [resend PATCH v6 12/12] drm/mediatek: Add support for mmsys through a pdev matthias.bgg
2019-12-09  5:34   ` CK Hu
2020-02-13 19:46     ` Matthias Brugger
2019-12-09 10:15   ` Enric Balletbo i Serra
2020-02-13  2:57 ` [resend PATCH v6 00/12] arm/arm64: mediatek: Fix mmsys device probing CK Hu

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