linux-kernel - Re: [PATCH v2 4/6] clk: rockchip: Export some clock common APIs for module drivers

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Date:   Thu, 3 Sep 2020 18:02:55 +0800
From:   Kever Yang <kever.yang@...k-chips.com>
To:     Elaine Zhang <zhangqing@...k-chips.com>, heiko@...ech.de
Cc:     mturquette@...libre.com, sboyd@...nel.org,
        linux-clk@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-kernel@...r.kernel.org, xxx@...k-chips.com,
        xf@...k-chips.com, huangtao@...k-chips.com
Subject: Re: [PATCH v2 4/6] clk: rockchip: Export some clock common APIs for
 module drivers


On 2020/9/3 下午2:31, Elaine Zhang wrote:
> This is used by the Rockchip clk driver, export it to allow that
> driver to be compiled as a module.
>
> Signed-off-by: Elaine Zhang <zhangqing@...k-chips.com>
> ---
>   drivers/clk/rockchip/clk.c | 52 ++++++++++++++++++++++----------------
>   1 file changed, 30 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c
> index b51f320e5733..b7664224e64a 100644
> --- a/drivers/clk/rockchip/clk.c
> +++ b/drivers/clk/rockchip/clk.c
> @@ -359,8 +359,9 @@ static struct clk *rockchip_clk_register_factor_branch(const char *name,
>   	return hw->clk;
>   }
>   
> -struct rockchip_clk_provider * __init rockchip_clk_init(struct device_node *np,
> -			void __iomem *base, unsigned long nr_clks)
> +struct rockchip_clk_provider *rockchip_clk_init(struct device_node *np,
> +						void __iomem *base,
> +						unsigned long nr_clks)
>   {
>   	struct rockchip_clk_provider *ctx;
>   	struct clk **clk_table;
> @@ -392,14 +393,16 @@ struct rockchip_clk_provider * __init rockchip_clk_init(struct device_node *np,
>   	kfree(ctx);
>   	return ERR_PTR(-ENOMEM);
>   }
> +EXPORT_SYMBOL(rockchip_clk_init);
>   
> -void __init rockchip_clk_of_add_provider(struct device_node *np,
> -				struct rockchip_clk_provider *ctx)
> +void rockchip_clk_of_add_provider(struct device_node *np,
> +				  struct rockchip_clk_provider *ctx)
>   {
>   	if (of_clk_add_provider(np, of_clk_src_onecell_get,
>   				&ctx->clk_data))
>   		pr_err("%s: could not register clk provider\n", __func__);
>   }
> +EXPORT_SYMBOL(rockchip_clk_of_add_provider);
>   
>   void rockchip_clk_add_lookup(struct rockchip_clk_provider *ctx,
>   			     struct clk *clk, unsigned int id)
> @@ -407,8 +410,9 @@ void rockchip_clk_add_lookup(struct rockchip_clk_provider *ctx,
>   	if (ctx->clk_data.clks && id)
>   		ctx->clk_data.clks[id] = clk;
>   }
> +EXPORT_SYMBOL(rockchip_clk_add_lookup);
>   
> -void __init rockchip_clk_register_plls(struct rockchip_clk_provider *ctx,
> +void rockchip_clk_register_plls(struct rockchip_clk_provider *ctx,
>   				struct rockchip_pll_clock *list,
>   				unsigned int nr_pll, int grf_lock_offset)
>   {
> @@ -431,11 +435,11 @@ void __init rockchip_clk_register_plls(struct rockchip_clk_provider *ctx,
>   		rockchip_clk_add_lookup(ctx, clk, list->id);
>   	}
>   }
> +EXPORT_SYMBOL(rockchip_clk_register_plls);
>   
> -void __init rockchip_clk_register_branches(
> -				      struct rockchip_clk_provider *ctx,
> -				      struct rockchip_clk_branch *list,
> -				      unsigned int nr_clk)
> +void rockchip_clk_register_branches(struct rockchip_clk_provider *ctx,
> +				    struct rockchip_clk_branch *list,
> +				    unsigned int nr_clk)
>   {
>   	struct clk *clk = NULL;
>   	unsigned int idx;
> @@ -564,14 +568,15 @@ void __init rockchip_clk_register_branches(
>   		rockchip_clk_add_lookup(ctx, clk, list->id);
>   	}
>   }
> -
> -void __init rockchip_clk_register_armclk(struct rockchip_clk_provider *ctx,
> -			unsigned int lookup_id,
> -			const char *name, const char *const *parent_names,
> -			u8 num_parents,
> -			const struct rockchip_cpuclk_reg_data *reg_data,
> -			const struct rockchip_cpuclk_rate_table *rates,
> -			int nrates)
> +EXPORT_SYMBOL(rockchip_clk_register_branches);
> +
> +void rockchip_clk_register_armclk(struct rockchip_clk_provider *ctx,
> +				  unsigned int lookup_id,
> +				  const char *name, const char *const *parent_names,
> +				  u8 num_parents,
> +				  const struct rockchip_cpuclk_reg_data *reg_data,
> +				  const struct rockchip_cpuclk_rate_table *rates,
> +				  int nrates)
>   {
>   	struct clk *clk;
>   
> @@ -586,9 +591,10 @@ void __init rockchip_clk_register_armclk(struct rockchip_clk_provider *ctx,
>   
>   	rockchip_clk_add_lookup(ctx, clk, lookup_id);
>   }
> +EXPORT_SYMBOL(rockchip_clk_register_armclk);
>   
> -void __init rockchip_clk_protect_critical(const char *const clocks[],
> -					  int nclocks)
> +void rockchip_clk_protect_critical(const char *const clocks[],
> +				   int nclocks)
>   {
>   	int i;
>   
> @@ -600,6 +606,7 @@ void __init rockchip_clk_protect_critical(const char *const clocks[],
>   			clk_prepare_enable(clk);
>   	}
>   }
> +EXPORT_SYMBOL(rockchip_clk_protect_critical);
>   
>   static void __iomem *rst_base;
>   static unsigned int reg_restart;
> @@ -619,10 +626,10 @@ static struct notifier_block rockchip_restart_handler = {
>   	.priority = 128,
>   };
>   
> -void __init
> +void
>   rockchip_register_restart_notifier(struct rockchip_clk_provider *ctx,
> -					       unsigned int reg,
> -					       void (*cb)(void))
> +				   unsigned int reg,
> +				   void (*cb)(void))
>   {
>   	int ret;
>   
> @@ -634,3 +641,4 @@ rockchip_register_restart_notifier(struct rockchip_clk_provider *ctx,
>   		pr_err("%s: cannot register restart handler, %d\n",
>   		       __func__, ret);
>   }
> +EXPORT_SYMBOL(rockchip_register_restart_notifier);


This looks good to me, so

Reviewed-by: Kever Yang <kever.yang@...k-chips.com>

Thanks,

- Kever