11 #include <linux/clk-provider.h>
21  * prepare - clk_prepare only ensures that parents are prepared
22  * enable - clk_enable only ensures that parents are enabled
23  * rate - rate is fixed.  clk->rate = parent->rate / div * mult
24  * parent - fixed parent.  No clk_set_parent support
33 	rate = (unsigned long long int)parent_rate * fix->mult;  in clk_factor_recalc_rate()
34 	do_div(rate, fix->div);  in clk_factor_recalc_rate()
46 		best_parent = (rate / fix->mult) * fix->div;  in clk_factor_round_rate()
50 	return (*prate / fix->div) * fix->mult;  in clk_factor_round_rate()
74 		unsigned int mult, unsigned int div)  in clk_hw_register_fixed_factor()  argument
83 		return ERR_PTR(-ENOMEM);  in clk_hw_register_fixed_factor()
86 	fix->mult = mult;  in clk_hw_register_fixed_factor()
87 	fix->div = div;  in clk_hw_register_fixed_factor()
88 	fix->hw.init = &init;  in clk_hw_register_fixed_factor()
96 	hw = &fix->hw;  in clk_hw_register_fixed_factor()
107 struct clk *clk_register_fixed_factor(struct device *dev, const char *name,  in clk_register_fixed_factor()
109 		unsigned int mult, unsigned int div)  in clk_register_fixed_factor()  argument
114 					  div);  in clk_register_fixed_factor()
117 	return hw->clk;  in clk_register_fixed_factor()
121 void clk_unregister_fixed_factor(struct clk *clk)  in clk_unregister_fixed_factor()  argument
125 	hw = __clk_get_hw(clk);  in clk_unregister_fixed_factor()
129 	clk_unregister(clk);  in clk_unregister_fixed_factor()
147 	{ .compatible = "allwinner,sun4i-a10-pll3-2x-clk" },
151 static struct clk *_of_fixed_factor_clk_setup(struct device_node *node)  in _of_fixed_factor_clk_setup()
153 	struct clk *clk;  in _of_fixed_factor_clk_setup()  local
154 	const char *clk_name = node->name;  in _of_fixed_factor_clk_setup()
157 	u32 div, mult;  in _of_fixed_factor_clk_setup()  local
160 	if (of_property_read_u32(node, "clock-div", &div)) {  in _of_fixed_factor_clk_setup()
161 		pr_err("%s Fixed factor clock <%s> must have a clock-div property\n",  in _of_fixed_factor_clk_setup()
162 			__func__, node->name);  in _of_fixed_factor_clk_setup()
163 		return ERR_PTR(-EIO);  in _of_fixed_factor_clk_setup()
166 	if (of_property_read_u32(node, "clock-mult", &mult)) {  in _of_fixed_factor_clk_setup()
167 		pr_err("%s Fixed factor clock <%s> must have a clock-mult property\n",  in _of_fixed_factor_clk_setup()
168 			__func__, node->name);  in _of_fixed_factor_clk_setup()
169 		return ERR_PTR(-EIO);  in _of_fixed_factor_clk_setup()
172 	of_property_read_string(node, "clock-output-names", &clk_name);  in _of_fixed_factor_clk_setup()
178 	clk = clk_register_fixed_factor(NULL, clk_name, parent_name, flags,  in _of_fixed_factor_clk_setup()
179 					mult, div);  in _of_fixed_factor_clk_setup()
180 	if (IS_ERR(clk)) {  in _of_fixed_factor_clk_setup()
187 		return clk;  in _of_fixed_factor_clk_setup()
190 	ret = of_clk_add_provider(node, of_clk_src_simple_get, clk);  in _of_fixed_factor_clk_setup()
192 		clk_unregister(clk);  in _of_fixed_factor_clk_setup()
196 	return clk;  in _of_fixed_factor_clk_setup()
200  * of_fixed_factor_clk_setup() - Setup function for simple fixed factor clock
206 CLK_OF_DECLARE(fixed_factor_clk, "fixed-factor-clock",
211 	struct clk *clk = platform_get_drvdata(pdev);  in of_fixed_factor_clk_remove()  local
213 	of_clk_del_provider(pdev->dev.of_node);  in of_fixed_factor_clk_remove()
214 	clk_unregister_fixed_factor(clk);  in of_fixed_factor_clk_remove()
221 	struct clk *clk;  in of_fixed_factor_clk_probe()  local
227 	clk = _of_fixed_factor_clk_setup(pdev->dev.of_node);  in of_fixed_factor_clk_probe()
228 	if (IS_ERR(clk))  in of_fixed_factor_clk_probe()
229 		return PTR_ERR(clk);  in of_fixed_factor_clk_probe()
231 	platform_set_drvdata(pdev, clk);  in of_fixed_factor_clk_probe()
237 	{ .compatible = "fixed-factor-clock" },