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SubjectRe: [resend PATCH v6 10/12] clk: mediatek: mt8183: switch mmsys to platform device probing
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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);

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