1 // SPDX-License-Identifier: GPL-2.0-only
3  * TI composite clock support
7  * Tero Kristo <t-kristo@ti.com>
10 #include <linux/clk-provider.h>
18 #include "clock.h"
32 	return -EINVAL;  in ti_composite_round_rate()
38 	return -EINVAL;  in ti_composite_set_rate()
63 	"gate", "divider", "mux"
73 	rc = of_parse_phandle_with_args(node, "clocks", "#clock-cells", i,  in _get_component_node()
86 		if (comp->node == node)  in _lookup_component()
103 	if (!clk->comp_clks[idx])  in _get_hw()
106 	return clk->comp_clks[idx]->hw;  in _get_hw()
124 	/* Check for presence of each component clock */  in _register_composite()
126 		if (!cclk->comp_nodes[i])  in _register_composite()
129 		comp = _lookup_component(cclk->comp_nodes[i]);  in _register_composite()
132 				 cclk->comp_nodes[i]->name, node);  in _register_composite()
139 		if (cclk->comp_clks[comp->type] != NULL) {  in _register_composite()
141 			       node, component_clk_types[comp->type]);  in _register_composite()
145 		cclk->comp_clks[comp->type] = comp;  in _register_composite()
148 		cclk->comp_nodes[i] = NULL;  in _register_composite()
152 	for (i = CLK_COMPONENT_TYPE_MAX - 1; i >= 0; i--) {  in _register_composite()
153 		comp = cclk->comp_clks[i];  in _register_composite()
156 		if (comp->num_parents) {  in _register_composite()
157 			num_parents = comp->num_parents;  in _register_composite()
158 			parent_names = comp->parent_names;  in _register_composite()
188 	/* Free component clock list entries */  in _register_composite()
190 		if (!cclk->comp_clks[i])  in _register_composite()
192 		list_del(&cclk->comp_clks[i]->link);  in _register_composite()
193 		kfree(cclk->comp_clks[i]->parent_names);  in _register_composite()
194 		kfree(cclk->comp_clks[i]);  in _register_composite()
206 	/* Number of component clocks to be put inside this clock */  in of_ti_composite_clk_setup()
210 		pr_err("composite clk %pOFn must have component(s)\n", node);  in of_ti_composite_clk_setup()
218 	/* Get device node pointers for each component clock */  in of_ti_composite_clk_setup()
220 		cclk->comp_nodes[i] = _get_component_node(node, i);  in of_ti_composite_clk_setup()
222 	_register_composite(&cclk->hw, node);  in of_ti_composite_clk_setup()
224 CLK_OF_DECLARE(ti_composite_clock, "ti,composite-clock",
228  * ti_clk_add_component - add a component clock to the pool
229  * @node: device node of the component clock
230  * @hw: hardware clock definition for the component clock
231  * @type: type of the component clock
233  * Adds a component clock to the list of available components, so that
234  * it can be registered by a composite clock.
246 		pr_err("component-clock %pOFn must have parent(s)\n", node);  in ti_clk_add_component()
247 		return -EINVAL;  in ti_clk_add_component()
252 		return -ENOMEM;  in ti_clk_add_component()
259 		return -ENOMEM;  in ti_clk_add_component()
262 	clk->num_parents = num_parents;  in ti_clk_add_component()
263 	clk->parent_names = parent_names;  in ti_clk_add_component()
264 	clk->hw = hw;  in ti_clk_add_component()
265 	clk->node = node;  in ti_clk_add_component()
266 	clk->type = type;  in ti_clk_add_component()
267 	list_add(&clk->link, &component_clks);  in ti_clk_add_component()