1 // SPDX-License-Identifier: GPL-2.0
3 #define pr_fmt(fmt) "irq-ls-extirq: " fmt
13 #include <dt-bindings/interrupt-controller/arm-gic.h>
23 	struct irq_fwspec	map[MAXIRQ];  member
29 	struct ls_extirq_data *priv = data->chip_data;  in ls_extirq_set_type()
30 	irq_hw_number_t hwirq = data->hwirq;  in ls_extirq_set_type()
31 	u32 value, mask;  in ls_extirq_set_type()  local
33 	if (priv->bit_reverse)  in ls_extirq_set_type()
34 		mask = 1U << (31 - hwirq);  in ls_extirq_set_type()
36 		mask = 1U << hwirq;  in ls_extirq_set_type()
41 		value = mask;  in ls_extirq_set_type()
45 		value = mask;  in ls_extirq_set_type()
52 		return -EINVAL;  in ls_extirq_set_type()
54 	regmap_update_bits(priv->syscon, priv->intpcr, mask, value);  in ls_extirq_set_type()
60 	.name			= "ls-extirq",
74 	struct ls_extirq_data *priv = domain->host_data;  in ls_extirq_domain_alloc()
78 	if (fwspec->param_count != 2)  in ls_extirq_domain_alloc()
79 		return -EINVAL;  in ls_extirq_domain_alloc()
81 	hwirq = fwspec->param[0];  in ls_extirq_domain_alloc()
82 	if (hwirq >= priv->nirq)  in ls_extirq_domain_alloc()
83 		return -EINVAL;  in ls_extirq_domain_alloc()
88 	return irq_domain_alloc_irqs_parent(domain, virq, 1, &priv->map[hwirq]);  in ls_extirq_domain_alloc()
100 	const __be32 *map;  in ls_extirq_parse_map()  local
104 	map = of_get_property(node, "interrupt-map", &mapsize);  in ls_extirq_parse_map()
105 	if (!map)  in ls_extirq_parse_map()
106 		return -ENOENT;  in ls_extirq_parse_map()
107 	if (mapsize % sizeof(*map))  in ls_extirq_parse_map()
108 		return -EINVAL;  in ls_extirq_parse_map()
109 	mapsize /= sizeof(*map);  in ls_extirq_parse_map()
116 			return -EINVAL;  in ls_extirq_parse_map()
117 		hwirq = be32_to_cpup(map);  in ls_extirq_parse_map()
119 			return -EINVAL;  in ls_extirq_parse_map()
120 		priv->nirq = max(priv->nirq, hwirq + 1);  in ls_extirq_parse_map()
122 		ipar = of_find_node_by_phandle(be32_to_cpup(map + 2));  in ls_extirq_parse_map()
123 		map += 3;  in ls_extirq_parse_map()
124 		mapsize -= 3;  in ls_extirq_parse_map()
126 			return -EINVAL;  in ls_extirq_parse_map()
127 		priv->map[hwirq].fwnode = &ipar->fwnode;  in ls_extirq_parse_map()
128 		ret = of_property_read_u32(ipar, "#interrupt-cells", &intsize);  in ls_extirq_parse_map()
133 			return -EINVAL;  in ls_extirq_parse_map()
135 		priv->map[hwirq].param_count = intsize;  in ls_extirq_parse_map()
137 			priv->map[hwirq].param[j] = be32_to_cpup(map++);  in ls_extirq_parse_map()
138 		mapsize -= intsize;  in ls_extirq_parse_map()
154 		return -ENODEV;  in ls_extirq_of_init()
159 		return -ENOMEM;  in ls_extirq_of_init()
161 	priv->syscon = syscon_node_to_regmap(node->parent);  in ls_extirq_of_init()
162 	if (IS_ERR(priv->syscon)) {  in ls_extirq_of_init()
163 		ret = PTR_ERR(priv->syscon);  in ls_extirq_of_init()
167 	ret = of_property_read_u32(node, "reg", &priv->intpcr);  in ls_extirq_of_init()
177 	if (of_device_is_compatible(node, "fsl,ls1021a-extirq")) {  in ls_extirq_of_init()
180 		ret = regmap_read(priv->syscon, LS1021A_SCFGREVCR, &revcr);  in ls_extirq_of_init()
183 		priv->bit_reverse = (revcr != 0);  in ls_extirq_of_init()
186 	domain = irq_domain_add_hierarchy(parent_domain, 0, priv->nirq, node,  in ls_extirq_of_init()
189 		ret = -ENOMEM;  in ls_extirq_of_init()
197 IRQCHIP_DECLARE(ls1021a_extirq, "fsl,ls1021a-extirq", ls_extirq_of_init);