1 // SPDX-License-Identifier: GPL-2.0
4  *  Loongson-1 platform IRQ support
26  * struct ls1x_intc_priv - private ls1x-intc data.
28  * @intc_base:	IO Base of intc registers.
44 	pending = readl(priv->intc_base + LS_REG_INTC_STATUS) &  in ls1x_chained_handle_irq()
45 			readl(priv->intc_base + LS_REG_INTC_EN);  in ls1x_chained_handle_irq()
53 		generic_handle_domain_irq(priv->domain, bit);  in ls1x_chained_handle_irq()
65 		writel(readl(gc->reg_base + offset) | mask,  in ls_intc_set_bit()
66 		gc->reg_base + offset);  in ls_intc_set_bit()
68 		writel(readl(gc->reg_base + offset) & ~mask,  in ls_intc_set_bit()
69 		gc->reg_base + offset);  in ls_intc_set_bit()
75 	u32 mask = data->mask;  in ls_intc_set_type()
95 		return -EINVAL;  in ls_intc_set_type()
113 		return -ENOMEM;  in ls1x_intc_of_init()
115 	priv->intc_base = of_iomap(node, 0);  in ls1x_intc_of_init()
116 	if (!priv->intc_base) {  in ls1x_intc_of_init()
117 		err = -ENODEV;  in ls1x_intc_of_init()
123 		pr_err("ls1x-irq: unable to get parent irq\n");  in ls1x_intc_of_init()
124 		err =  -ENODEV;  in ls1x_intc_of_init()
129 	priv->domain = irq_domain_add_linear(node, 32, &irq_generic_chip_ops,  in ls1x_intc_of_init()
131 	if (!priv->domain) {  in ls1x_intc_of_init()
132 		pr_err("ls1x-irq: cannot add IRQ domain\n");  in ls1x_intc_of_init()
133 		err = -ENOMEM;  in ls1x_intc_of_init()
137 	err = irq_alloc_domain_generic_chips(priv->domain, 32, 2,  in ls1x_intc_of_init()
138 		node->full_name, handle_level_irq,  in ls1x_intc_of_init()
142 		pr_err("ls1x-irq: unable to register IRQ domain\n");  in ls1x_intc_of_init()
147 	writel(0x0, priv->intc_base + LS_REG_INTC_EN);  in ls1x_intc_of_init()
150 	writel(0xffffffff, priv->intc_base + LS_REG_INTC_CLR);  in ls1x_intc_of_init()
153 	writel(0xffffffff, priv->intc_base + LS_REG_INTC_POL);  in ls1x_intc_of_init()
155 	gc = irq_get_domain_generic_chip(priv->domain, 0);  in ls1x_intc_of_init()
157 	gc->reg_base = priv->intc_base;  in ls1x_intc_of_init()
159 	ct = gc->chip_types;  in ls1x_intc_of_init()
184 	irq_domain_remove(priv->domain);  in ls1x_intc_of_init()
186 	iounmap(priv->intc_base);  in ls1x_intc_of_init()
193 IRQCHIP_DECLARE(ls1x_intc, "loongson,ls1x-intc", ls1x_intc_of_init);