linux-kernel - Re: [RFC PATCH 3/3] clk: lan966x: Extend lan966x clock driver for clock gating support

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Date:   Thu, 28 Oct 2021 23:41:57 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Horatiu Vultur <horatiu.vultur@...rochip.com>,
        mturquette@...libre.com, robh+dt@...nel.org
Cc:     nicolas.ferre@...rochip.com, kavyasree.kotagiri@...rochip.com,
        eugen.hristev@...rochip.com, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: Re: [RFC PATCH 3/3] clk: lan966x: Extend lan966x clock driver for clock gating support

Quoting Horatiu Vultur (2021-10-19 01:44:49)
> diff --git a/drivers/clk/clk-lan966x.c b/drivers/clk/clk-lan966x.c
> index 19bec94e1551..40be47092a31 100644
> --- a/drivers/clk/clk-lan966x.c
> +++ b/drivers/clk/clk-lan966x.c
> @@ -188,26 +202,64 @@ static struct clk_hw *lan966x_gck_clk_register(struct device *dev, int i)
>         return &priv->hw;
>  };
>  
> +static int lan966x_gate_clk_register(struct device *dev,
> +                                    struct clk_hw_onecell_data *hw_data,
> +                                    void __iomem *gate_base)
> +{
> +       int i;
> +
> +       for (i = GCK_GATE_UHPHS; i < N_CLOCKS; ++i) {
> +               int idx = i - GCK_GATE_UHPHS;
> +
> +               hw_data->hws[i] =
> +                       clk_hw_register_gate(dev, clk_gate_desc[idx].name,

Use devm?

> +                                            "lan966x", 0, base,
> +                                            clk_gate_desc[idx].bit_idx,
> +                                            0, &clk_gate_lock);
> +
> +               if (IS_ERR(hw_data->hws[i]))
> +                       return dev_err_probe(dev, PTR_ERR(hw_data->hws[i]),
> +                                            "failed to register %s clock\n",
> +                                            clk_gate_desc[idx].name);
> +       }
> +
> +       return 0;
> +}
> +
> +static void lan966x_gate_clk_unregister(struct clk_hw_onecell_data *hw_data)
> +{
> +       int i;
> +
> +       for (i = GCK_GATE_UHPHS; i < N_CLOCKS; ++i)

for (int i = 

should suffice

> +               if (!IS_ERR(hw_data->hws[i]))
> +                       clk_hw_unregister(hw_data->hws[i]);
> +}
> +