1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
4  * Author Mark-PK Tsai <mark-pk.tsai@mediatek.com>
49 	raw_spin_lock_irqsave(&cd->lock, flags);  in mst_set_irq()
50 	val = readw_relaxed(cd->base + offset) | mask;  in mst_set_irq()
51 	writew_relaxed(val, cd->base + offset);  in mst_set_irq()
52 	raw_spin_unlock_irqrestore(&cd->lock, flags);  in mst_set_irq()
65 	raw_spin_lock_irqsave(&cd->lock, flags);  in mst_clear_irq()
66 	val = readw_relaxed(cd->base + offset) & ~mask;  in mst_clear_irq()
67 	writew_relaxed(val, cd->base + offset);  in mst_clear_irq()
68 	raw_spin_unlock_irqrestore(&cd->lock, flags);  in mst_clear_irq()
87 	if (!cd->no_eoi)  in mst_intc_eoi_irq()
96 	case IRQ_TYPE_LEVEL_LOW:  in mst_irq_chip_set_type()
97 	case IRQ_TYPE_EDGE_FALLING:  in mst_irq_chip_set_type()
100 	case IRQ_TYPE_LEVEL_HIGH:  in mst_irq_chip_set_type()
101 	case IRQ_TYPE_EDGE_RISING:  in mst_irq_chip_set_type()
105 		return -EINVAL;  in mst_irq_chip_set_type()
112 	.name			= "mst-intc",
131 	void __iomem *addr = cd->base + INTC_REV_POLARITY;  in mst_intc_polarity_save()
133 	for (i = 0; i < DIV_ROUND_UP(cd->nr_irqs, 16); i++)  in mst_intc_polarity_save()
134 		cd->saved_polarity_conf[i] = readw_relaxed(addr + i * 4);  in mst_intc_polarity_save()
140 	void __iomem *addr = cd->base + INTC_REV_POLARITY;  in mst_intc_polarity_restore()
142 	for (i = 0; i < DIV_ROUND_UP(cd->nr_irqs, 16); i++)  in mst_intc_polarity_restore()
143 		writew_relaxed(cd->saved_polarity_conf[i], addr + i * 4);  in mst_intc_polarity_restore()
181 	struct mst_intc_chip_data *cd = d->host_data;  in mst_intc_domain_translate()
183 	if (is_of_node(fwspec->fwnode)) {  in mst_intc_domain_translate()
184 		if (fwspec->param_count != 3)  in mst_intc_domain_translate()
185 			return -EINVAL;  in mst_intc_domain_translate()
188 		if (fwspec->param[0] != 0)  in mst_intc_domain_translate()
189 			return -EINVAL;  in mst_intc_domain_translate()
191 		if (fwspec->param[1] >= cd->nr_irqs)  in mst_intc_domain_translate()
192 			return -EINVAL;  in mst_intc_domain_translate()
194 		*hwirq = fwspec->param[1];  in mst_intc_domain_translate()
195 		*type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK;  in mst_intc_domain_translate()
199 	return -EINVAL;  in mst_intc_domain_translate()
208 	struct mst_intc_chip_data *cd = domain->host_data;  in mst_intc_domain_alloc()
211 	if (fwspec->param_count != 3)  in mst_intc_domain_alloc()
212 		return -EINVAL;  in mst_intc_domain_alloc()
215 	if (fwspec->param[0])  in mst_intc_domain_alloc()
216 		return -EINVAL;  in mst_intc_domain_alloc()
218 	hwirq = fwspec->param[1];  in mst_intc_domain_alloc()
222 					      domain->host_data);  in mst_intc_domain_alloc()
225 	parent_fwspec.fwnode = domain->parent->fwnode;  in mst_intc_domain_alloc()
226 	parent_fwspec.param[1] = cd->irq_start + hwirq;  in mst_intc_domain_alloc()
229 	 * mst-intc latch the interrupt request if it's edge triggered,  in mst_intc_domain_alloc()
230 	 * so the output signal to parent GIC is always level sensitive.  in mst_intc_domain_alloc()
254 		pr_err("mst-intc: interrupt-parent not found\n");  in mst_intc_of_init()
255 		return -EINVAL;  in mst_intc_of_init()
258 	if (of_property_read_u32_index(dn, "mstar,irqs-map-range", 0, &irq_start) ||  in mst_intc_of_init()
259 	    of_property_read_u32_index(dn, "mstar,irqs-map-range", 1, &irq_end))  in mst_intc_of_init()
260 		return -EINVAL;  in mst_intc_of_init()
264 		return -ENOMEM;  in mst_intc_of_init()
266 	cd->base = of_iomap(dn, 0);  in mst_intc_of_init()
267 	if (!cd->base) {  in mst_intc_of_init()
269 		return -ENOMEM;  in mst_intc_of_init()
272 	cd->no_eoi = of_property_read_bool(dn, "mstar,intc-no-eoi");  in mst_intc_of_init()
273 	raw_spin_lock_init(&cd->lock);  in mst_intc_of_init()
274 	cd->irq_start = irq_start;  in mst_intc_of_init()
275 	cd->nr_irqs = irq_end - irq_start + 1;  in mst_intc_of_init()
276 	domain = irq_domain_add_hierarchy(domain_parent, 0, cd->nr_irqs, dn,  in mst_intc_of_init()
279 		iounmap(cd->base);  in mst_intc_of_init()
281 		return -ENOMEM;  in mst_intc_of_init()
285 	INIT_LIST_HEAD(&cd->entry);  in mst_intc_of_init()
286 	list_add_tail(&cd->entry, &mst_intc_list);  in mst_intc_of_init()
291 IRQCHIP_DECLARE(mst_intc, "mstar,mst-intc", mst_intc_of_init);