1 // SPDX-License-Identifier: GPL-2.0-or-later
4  * Maxime Ripard <maxime.ripard@free-electrons.com>
7 #include <linux/clk-provider.h>
16 	if (!(common->features & CCU_FEATURE_FRACTIONAL))  in ccu_frac_helper_is_enabled()
19 	return !(readl(common->base + common->reg) & cf->enable);  in ccu_frac_helper_is_enabled()
29 	if (!(common->features & CCU_FEATURE_FRACTIONAL))  in ccu_frac_helper_enable()
32 	spin_lock_irqsave(common->lock, flags);  in ccu_frac_helper_enable()
33 	reg = readl(common->base + common->reg);  in ccu_frac_helper_enable()
34 	writel(reg & ~cf->enable, common->base + common->reg);  in ccu_frac_helper_enable()
35 	spin_unlock_irqrestore(common->lock, flags);  in ccu_frac_helper_enable()
45 	if (!(common->features & CCU_FEATURE_FRACTIONAL))  in ccu_frac_helper_disable()
48 	spin_lock_irqsave(common->lock, flags);  in ccu_frac_helper_disable()
49 	reg = readl(common->base + common->reg);  in ccu_frac_helper_disable()
50 	writel(reg | cf->enable, common->base + common->reg);  in ccu_frac_helper_disable()
51 	spin_unlock_irqrestore(common->lock, flags);  in ccu_frac_helper_disable()
59 	if (!(common->features & CCU_FEATURE_FRACTIONAL))  in ccu_frac_helper_has_rate()
62 	return (cf->rates[0] == rate) || (cf->rates[1] == rate);  in ccu_frac_helper_has_rate()
71 	pr_debug("%s: Read fractional\n", clk_hw_get_name(&common->hw));  in ccu_frac_helper_read_rate()
73 	if (!(common->features & CCU_FEATURE_FRACTIONAL))  in ccu_frac_helper_read_rate()
76 	pr_debug("%s: clock is fractional (rates %lu and %lu)\n",  in ccu_frac_helper_read_rate()
77 		 clk_hw_get_name(&common->hw), cf->rates[0], cf->rates[1]);  in ccu_frac_helper_read_rate()
79 	reg = readl(common->base + common->reg);  in ccu_frac_helper_read_rate()
81 	pr_debug("%s: clock reg is 0x%x (select is 0x%x)\n",  in ccu_frac_helper_read_rate()
82 		 clk_hw_get_name(&common->hw), reg, cf->select);  in ccu_frac_helper_read_rate()
84 	return (reg & cf->select) ? cf->rates[1] : cf->rates[0];  in ccu_frac_helper_read_rate()
95 	if (!(common->features & CCU_FEATURE_FRACTIONAL))  in ccu_frac_helper_set_rate()
96 		return -EINVAL;  in ccu_frac_helper_set_rate()
98 	if (cf->rates[0] == rate)  in ccu_frac_helper_set_rate()
100 	else if (cf->rates[1] == rate)  in ccu_frac_helper_set_rate()
101 		sel = cf->select;  in ccu_frac_helper_set_rate()
103 		return -EINVAL;  in ccu_frac_helper_set_rate()
105 	spin_lock_irqsave(common->lock, flags);  in ccu_frac_helper_set_rate()
106 	reg = readl(common->base + common->reg);  in ccu_frac_helper_set_rate()
107 	reg &= ~cf->select;  in ccu_frac_helper_set_rate()
108 	writel(reg | sel, common->base + common->reg);  in ccu_frac_helper_set_rate()
109 	spin_unlock_irqrestore(common->lock, flags);  in ccu_frac_helper_set_rate()