linux-kernel - Re: [PATCH 2/4] clk: sunxi: Allow to specify the divider width from the dividers data

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Date:	Tue, 30 Jul 2013 21:27:33 -0300
From:	Emilio López <emilio@...pez.com.ar>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
CC:	Mike Turquette <mturquette@...aro.org>, kevin.z.m.zh@...il.com,
	sunny@...winnertech.com, shuge@...winnertech.com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] clk: sunxi: Allow to specify the divider width from
 the dividers data

El 30/07/13 11:44, Maxime Ripard escribió:
> The divider width used to be hardcoded. Some A31 dividers are no longer
> with the hardcoded width, so we need to make it specific to each divider
> and set it in the dividers data.
> 
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>

Looks good to me,

Reviewed-by: Emilio López <emilio@...pez.com.ar>

> ---
>  drivers/clk/sunxi/clk-sunxi.c | 24 +++++++++++++-----------
>  1 file changed, 13 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
> index 3c91888..6e9cbc9 100644
> --- a/drivers/clk/sunxi/clk-sunxi.c
> +++ b/drivers/clk/sunxi/clk-sunxi.c
> @@ -277,26 +277,28 @@ static void __init sunxi_mux_clk_setup(struct device_node *node,
>   * sunxi_divider_clk_setup() - Setup function for simple divider clocks
>   */
>  
> -#define SUNXI_DIVISOR_WIDTH	2
> -
>  struct div_data {
> -	u8 shift;
> -	u8 pow;
> +	u8	shift;
> +	u8	pow;
> +	u8	width;
>  };
>  
>  static const __initconst struct div_data sun4i_axi_data = {
> -	.shift = 0,
> -	.pow = 0,
> +	.shift	= 0,
> +	.pow	= 0,
> +	.width	= 2,
>  };

Is there a style rule governing the use of tabs/spaces on structs? Maybe
we should do this alignment cleanup on the full file some time.

>  
>  static const __initconst struct div_data sun4i_ahb_data = {
> -	.shift = 4,
> -	.pow = 1,
> +	.shift	= 4,
> +	.pow	= 1,
> +	.width	= 2,
>  };
>  
>  static const __initconst struct div_data sun4i_apb0_data = {
> -	.shift = 8,
> -	.pow = 1,
> +	.shift	= 8,
> +	.pow	= 1,
> +	.width	= 2,
>  };
>  
>  static void __init sunxi_divider_clk_setup(struct device_node *node,
> @@ -312,7 +314,7 @@ static void __init sunxi_divider_clk_setup(struct device_node *node,
>  	clk_parent = of_clk_get_parent_name(node, 0);
>  
>  	clk = clk_register_divider(NULL, clk_name, clk_parent, 0,
> -				   reg, data->shift, SUNXI_DIVISOR_WIDTH,
> +				   reg, data->shift, data->width,
>  				   data->pow ? CLK_DIVIDER_POWER_OF_TWO : 0,
>  				   &clk_lock);
>  	if (clk) {
> 

Thanks!

Emilio
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