clk: microchip: mpfs: convert cfg_clk to clk_divider

The cfg_clk struct is now just a redefinition of the clk_divider struct
with custom implentations of the ops, that implement an extra level of
redirection. Remove the custom struct and replace it with clk_divider.
Reviewed-by: Daire McNamara <daire.mcnamara@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220909123123.2699583-13-conor.dooley@microchip.com

drivers/clk/microchip/clk-mpfs.c

@@ -49,24 +49,13 @@ struct mpfs_msspll_hw_clock {
 
 #define to_mpfs_msspll_clk(_hw) container_of(_hw, struct mpfs_msspll_hw_clock, hw)
 
-struct mpfs_cfg_clock {
-	void __iomem *reg;
-	const struct clk_div_table *table;
-	u8 shift;
-	u8 width;
-	u8 flags;
-};
-
 struct mpfs_cfg_hw_clock {
-	struct mpfs_cfg_clock cfg;
-	struct clk_hw hw;
+	struct clk_divider cfg;
 	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 {
 	void __iomem *reg;
 	u8 shift;
@@ -226,56 +215,6 @@ static int mpfs_clk_register_mssplls(struct device *dev, struct mpfs_msspll_hw_c
  * "CFG" clocks
  */
 
-static unsigned long mpfs_cfg_clk_recalc_rate(struct clk_hw *hw, unsigned long prate)
-{
-	struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw);
-	struct mpfs_cfg_clock *cfg = &cfg_hw->cfg;
-	u32 val;
-
-	val = readl_relaxed(cfg->reg) >> cfg->shift;
-	val &= clk_div_mask(cfg->width);
-
-	return divider_recalc_rate(hw, prate, val, cfg->table, cfg->flags, cfg->width);
-}
-
-static long mpfs_cfg_clk_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate)
-{
-	struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw);
-	struct mpfs_cfg_clock *cfg = &cfg_hw->cfg;
-
-	return divider_round_rate(hw, rate, prate, cfg->table, cfg->width, 0);
-}
-
-static int mpfs_cfg_clk_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long prate)
-{
-	struct mpfs_cfg_hw_clock *cfg_hw = to_mpfs_cfg_clk(hw);
-	struct mpfs_cfg_clock *cfg = &cfg_hw->cfg;
-	unsigned long flags;
-	u32 val;
-	int divider_setting;
-
-	divider_setting = divider_get_val(rate, prate, cfg->table, cfg->width, 0);
-
-	if (divider_setting < 0)
-		return divider_setting;
-
-	spin_lock_irqsave(&mpfs_clk_lock, flags);
-	val = readl_relaxed(cfg->reg);
-	val &= ~(clk_div_mask(cfg->width) << cfg_hw->cfg.shift);
-	val |= divider_setting << cfg->shift;
-	writel_relaxed(val, cfg->reg);
-
-	spin_unlock_irqrestore(&mpfs_clk_lock, flags);
-
-	return 0;
-}
-
-static const struct clk_ops mpfs_clk_cfg_ops = {
-	.recalc_rate = mpfs_cfg_clk_recalc_rate,
-	.round_rate = mpfs_cfg_clk_round_rate,
-	.set_rate = mpfs_cfg_clk_set_rate,
-};
-
 #define CLK_CFG(_id, _name, _parent, _shift, _width, _table, _flags, _offset) {		\
 	.id = _id,									\
 	.cfg.shift = _shift,								\
@@ -283,7 +222,8 @@ static const struct clk_ops mpfs_clk_cfg_ops = {
 	.cfg.table = _table,								\
 	.reg_offset = _offset,								\
 	.cfg.flags = _flags,								\
-	.hw.init = CLK_HW_INIT(_name, _parent, &mpfs_clk_cfg_ops, 0),			\
+	.cfg.hw.init = CLK_HW_INIT(_name, _parent, &clk_divider_ops, 0),		\
+	.cfg.lock = &mpfs_clk_lock,							\
 }
 
 #define CLK_CPU_OFFSET		0u
@@ -305,8 +245,8 @@ static struct mpfs_cfg_hw_clock mpfs_cfg_clks[] = {
 		.cfg.table = mpfs_div_rtcref_table,
 		.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),
+		.cfg.hw.init =
+			CLK_HW_INIT_PARENTS_DATA("clk_rtcref", mpfs_ext_ref, &clk_divider_ops, 0),
 	}
 };
 
@@ -320,13 +260,13 @@ static int mpfs_clk_register_cfgs(struct device *dev, struct mpfs_cfg_hw_clock *
 		struct mpfs_cfg_hw_clock *cfg_hw = &cfg_hws[i];
 
 		cfg_hw->cfg.reg = data->base + cfg_hw->reg_offset;
-		ret = devm_clk_hw_register(dev, &cfg_hw->hw);
+		ret = devm_clk_hw_register(dev, &cfg_hw->cfg.hw);
 		if (ret)
 			return dev_err_probe(dev, ret, "failed to register clock id: %d\n",
 					     cfg_hw->id);
 
 		id = cfg_hw->id;
-		data->hw_data.hws[id] = &cfg_hw->hw;
+		data->hw_data.hws[id] = &cfg_hw->cfg.hw;
 	}
 
 	return 0;
@@ -396,7 +336,7 @@ static const struct clk_ops mpfs_periph_clk_ops = {
 				  _flags),					\
 }
 
-#define PARENT_CLK(PARENT) (&mpfs_cfg_clks[CLK_##PARENT##_OFFSET].hw)
+#define PARENT_CLK(PARENT) (&mpfs_cfg_clks[CLK_##PARENT##_OFFSET].cfg.hw)
 
 /*
  * Critical clocks: