linux-kernel - Re: [PATCH v4 08/13] clk: microchip: mpfs: move id & offset out of clock structs

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Date:   Thu, 8 Sep 2022 06:46:32 +0000
From:   <Claudiu.Beznea@...rochip.com>
To:     <Conor.Dooley@...rochip.com>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <palmer@...belt.com>,
        <Daire.McNamara@...rochip.com>
CC:     <paul.walmsley@...ive.com>, <aou@...s.berkeley.edu>,
        <linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH v4 08/13] clk: microchip: mpfs: move id & offset out of
 clock structs

On 30.08.2022 15:52, Conor Dooley wrote:
> The id and offset are the only thing differentiating the clock structs
> from "regular" clock structures. On the pretext of converting to more
> normal structures, move the id and offset out of the clock structs and
> into the hw structs instead.
> 
> Reviewed-by: Daire McNamara <daire.mcnamara@...rochip.com>
> Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>

Reviewed-by: Claudiu Beznea <claudiu.beznea@...rochip.com>


> ---
>  drivers/clk/microchip/clk-mpfs.c | 30 +++++++++++++++---------------
>  1 file changed, 15 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/clk/microchip/clk-mpfs.c b/drivers/clk/microchip/clk-mpfs.c
> index 008b76d81485..845658751690 100644
> --- a/drivers/clk/microchip/clk-mpfs.c
> +++ b/drivers/clk/microchip/clk-mpfs.c
> @@ -53,8 +53,6 @@ struct mpfs_msspll_hw_clock {
>  
>  struct mpfs_cfg_clock {
>  	const struct clk_div_table *table;
> -	unsigned int id;
> -	u32 reg_offset;
>  	u8 shift;
>  	u8 width;
>  	u8 flags;
> @@ -65,12 +63,13 @@ struct mpfs_cfg_hw_clock {
>  	void __iomem *sys_base;
>  	struct clk_hw hw;
>  	struct clk_init_data init;
> +	unsigned int id;
> +	u32 reg_offset;
>  };
>  
>  #define to_mpfs_cfg_clk(_hw) container_of(_hw, struct mpfs_cfg_hw_clock, hw)
>  
>  struct mpfs_periph_clock {
> -	unsigned int id;
>  	u8 shift;
>  };
>  
> @@ -78,6 +77,7 @@ struct mpfs_periph_hw_clock {
>  	struct mpfs_periph_clock periph;
>  	void __iomem *sys_base;
>  	struct clk_hw hw;
> +	unsigned int id;
>  };
>  
>  #define to_mpfs_periph_clk(_hw) container_of(_hw, struct mpfs_periph_hw_clock, hw)
> @@ -243,7 +243,7 @@ static unsigned long mpfs_cfg_clk_recalc_rate(struct clk_hw *hw, unsigned long p
>  	void __iomem *base_addr = cfg_hw->sys_base;
>  	u32 val;
>  
> -	val = readl_relaxed(base_addr + cfg->reg_offset) >> cfg->shift;
> +	val = readl_relaxed(base_addr + cfg_hw->reg_offset) >> cfg->shift;
>  	val &= clk_div_mask(cfg->width);
>  
>  	return divider_recalc_rate(hw, prate, val, cfg->table, cfg->flags, cfg->width);
> @@ -272,10 +272,10 @@ static int mpfs_cfg_clk_set_rate(struct clk_hw *hw, unsigned long rate, unsigned
>  		return divider_setting;
>  
>  	spin_lock_irqsave(&mpfs_clk_lock, flags);
> -	val = readl_relaxed(base_addr + cfg->reg_offset);
> +	val = readl_relaxed(base_addr + cfg_hw->reg_offset);
>  	val &= ~(clk_div_mask(cfg->width) << cfg_hw->cfg.shift);
>  	val |= divider_setting << cfg->shift;
> -	writel_relaxed(val, base_addr + cfg->reg_offset);
> +	writel_relaxed(val, base_addr + cfg_hw->reg_offset);
>  
>  	spin_unlock_irqrestore(&mpfs_clk_lock, flags);
>  
> @@ -289,11 +289,11 @@ static const struct clk_ops mpfs_clk_cfg_ops = {
>  };
>  
>  #define CLK_CFG(_id, _name, _parent, _shift, _width, _table, _flags, _offset) {		\
> -	.cfg.id = _id,									\
> +	.id = _id,									\
>  	.cfg.shift = _shift,								\
>  	.cfg.width = _width,								\
>  	.cfg.table = _table,								\
> -	.cfg.reg_offset = _offset,							\
> +	.reg_offset = _offset,								\
>  	.cfg.flags = _flags,								\
>  	.hw.init = CLK_HW_INIT(_name, _parent, &mpfs_clk_cfg_ops, 0),			\
>  }
> @@ -306,11 +306,11 @@ static struct mpfs_cfg_hw_clock mpfs_cfg_clks[] = {
>  	CLK_CFG(CLK_AHB, "clk_ahb", "clk_msspll", 4, 2, mpfs_div_ahb_table, 0,
>  		REG_CLOCK_CONFIG_CR),
>  	{
> -		.cfg.id = CLK_RTCREF,
> +		.id = CLK_RTCREF,
>  		.cfg.shift = 0,
>  		.cfg.width = 12,
>  		.cfg.table = mpfs_div_rtcref_table,
> -		.cfg.reg_offset = REG_RTC_CLOCK_CR,
> +		.reg_offset = REG_RTC_CLOCK_CR,
>  		.cfg.flags = CLK_DIVIDER_ONE_BASED,
>  		.hw.init =
>  			CLK_HW_INIT_PARENTS_DATA("clk_rtcref", mpfs_ext_ref, &mpfs_clk_cfg_ops, 0),
> @@ -338,9 +338,9 @@ static int mpfs_clk_register_cfgs(struct device *dev, struct mpfs_cfg_hw_clock *
>  		ret = mpfs_clk_register_cfg(dev, cfg_hw, sys_base);
>  		if (ret)
>  			return dev_err_probe(dev, ret, "failed to register clock id: %d\n",
> -					     cfg_hw->cfg.id);
> +					     cfg_hw->id);
>  
> -		id = cfg_hw->cfg.id;
> +		id = cfg_hw->id;
>  		data->hw_data.hws[id] = &cfg_hw->hw;
>  	}
>  
> @@ -408,7 +408,7 @@ static const struct clk_ops mpfs_periph_clk_ops = {
>  };
>  
>  #define CLK_PERIPH(_id, _name, _parent, _shift, _flags) {			\
> -	.periph.id = _id,							\
> +	.id = _id,								\
>  	.periph.shift = _shift,							\
>  	.hw.init = CLK_HW_INIT_HW(_name, _parent, &mpfs_periph_clk_ops,		\
>  				  _flags),					\
> @@ -482,9 +482,9 @@ static int mpfs_clk_register_periphs(struct device *dev, struct mpfs_periph_hw_c
>  		ret = mpfs_clk_register_periph(dev, periph_hw, sys_base);
>  		if (ret)
>  			return dev_err_probe(dev, ret, "failed to register clock id: %d\n",
> -					     periph_hw->periph.id);
> +					     periph_hw->id);
>  
> -		id = periph_hws[i].periph.id;
> +		id = periph_hws[i].id;
>  		data->hw_data.hws[id] = &periph_hw->hw;
>  	}
>