1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Aspeed AST24XX, AST25XX, and AST26XX SCU Interrupt Controller
41 	struct regmap *scu;  member
54 	unsigned int mask = scu_ic->irq_enable << ASPEED_SCU_IC_STATUS_SHIFT;  in aspeed_scu_ic_irq_handler()
59 	 * The SCU IC has just one register to control its operation and read  in aspeed_scu_ic_irq_handler()
68 	regmap_read(scu_ic->scu, scu_ic->reg, &sts);  in aspeed_scu_ic_irq_handler()
69 	enabled = sts & scu_ic->irq_enable;  in aspeed_scu_ic_irq_handler()
72 	bit = scu_ic->irq_shift;  in aspeed_scu_ic_irq_handler()
73 	max = scu_ic->num_irqs + bit;  in aspeed_scu_ic_irq_handler()
76 		generic_handle_domain_irq(scu_ic->irq_domain,  in aspeed_scu_ic_irq_handler()
77 					  bit - scu_ic->irq_shift);  in aspeed_scu_ic_irq_handler()
79 		regmap_write_bits(scu_ic->scu, scu_ic->reg, mask,  in aspeed_scu_ic_irq_handler()
89 	unsigned int mask = BIT(data->hwirq + scu_ic->irq_shift) |  in aspeed_scu_ic_irq_mask()
90 		(scu_ic->irq_enable << ASPEED_SCU_IC_STATUS_SHIFT);  in aspeed_scu_ic_irq_mask()
97 	regmap_update_bits(scu_ic->scu, scu_ic->reg, mask, 0);  in aspeed_scu_ic_irq_mask()
103 	unsigned int bit = BIT(data->hwirq + scu_ic->irq_shift);  in aspeed_scu_ic_irq_unmask()
105 		(scu_ic->irq_enable << ASPEED_SCU_IC_STATUS_SHIFT);  in aspeed_scu_ic_irq_unmask()
112 	regmap_update_bits(scu_ic->scu, scu_ic->reg, mask, bit);  in aspeed_scu_ic_irq_unmask()
119 	return -EINVAL;  in aspeed_scu_ic_irq_set_affinity()
123 	.name			= "aspeed-scu-ic",
133 	irq_set_chip_data(irq, domain->host_data);  in aspeed_scu_ic_map()
148 	if (!node->parent) {  in aspeed_scu_ic_of_init_common()
149 		rc = -ENODEV;  in aspeed_scu_ic_of_init_common()
153 	scu_ic->scu = syscon_node_to_regmap(node->parent);  in aspeed_scu_ic_of_init_common()
154 	if (IS_ERR(scu_ic->scu)) {  in aspeed_scu_ic_of_init_common()
155 		rc = PTR_ERR(scu_ic->scu);  in aspeed_scu_ic_of_init_common()
161 		rc = -EINVAL;  in aspeed_scu_ic_of_init_common()
165 	scu_ic->irq_domain = irq_domain_add_linear(node, scu_ic->num_irqs,  in aspeed_scu_ic_of_init_common()
168 	if (!scu_ic->irq_domain) {  in aspeed_scu_ic_of_init_common()
169 		rc = -ENOMEM;  in aspeed_scu_ic_of_init_common()
190 		return -ENOMEM;  in aspeed_scu_ic_of_init()
192 	scu_ic->irq_enable = ASPEED_SCU_IC_ENABLE;  in aspeed_scu_ic_of_init()
193 	scu_ic->irq_shift = ASPEED_SCU_IC_SHIFT;  in aspeed_scu_ic_of_init()
194 	scu_ic->num_irqs = ASPEED_SCU_IC_NUM_IRQS;  in aspeed_scu_ic_of_init()
195 	scu_ic->reg = ASPEED_SCU_IC_REG;  in aspeed_scu_ic_of_init()
206 		return -ENOMEM;  in aspeed_ast2600_scu_ic0_of_init()
208 	scu_ic->irq_enable = ASPEED_AST2600_SCU_IC0_ENABLE;  in aspeed_ast2600_scu_ic0_of_init()
209 	scu_ic->irq_shift = ASPEED_AST2600_SCU_IC0_SHIFT;  in aspeed_ast2600_scu_ic0_of_init()
210 	scu_ic->num_irqs = ASPEED_AST2600_SCU_IC0_NUM_IRQS;  in aspeed_ast2600_scu_ic0_of_init()
211 	scu_ic->reg = ASPEED_AST2600_SCU_IC0_REG;  in aspeed_ast2600_scu_ic0_of_init()
222 		return -ENOMEM;  in aspeed_ast2600_scu_ic1_of_init()
224 	scu_ic->irq_enable = ASPEED_AST2600_SCU_IC1_ENABLE;  in aspeed_ast2600_scu_ic1_of_init()
225 	scu_ic->irq_shift = ASPEED_AST2600_SCU_IC1_SHIFT;  in aspeed_ast2600_scu_ic1_of_init()
226 	scu_ic->num_irqs = ASPEED_AST2600_SCU_IC1_NUM_IRQS;  in aspeed_ast2600_scu_ic1_of_init()
227 	scu_ic->reg = ASPEED_AST2600_SCU_IC1_REG;  in aspeed_ast2600_scu_ic1_of_init()
232 IRQCHIP_DECLARE(ast2400_scu_ic, "aspeed,ast2400-scu-ic", aspeed_scu_ic_of_init);
233 IRQCHIP_DECLARE(ast2500_scu_ic, "aspeed,ast2500-scu-ic", aspeed_scu_ic_of_init);
234 IRQCHIP_DECLARE(ast2600_scu_ic0, "aspeed,ast2600-scu-ic0",
236 IRQCHIP_DECLARE(ast2600_scu_ic1, "aspeed,ast2600-scu-ic1",