1 // SPDX-License-Identifier: GPL-2.0-only
9 #include <linux/irq.h>
42 	struct mtk_cirq_chip_data *chip_data = data->chip_data;  in mtk_cirq_write_mask()
43 	unsigned int cirq_num = data->hwirq;  in mtk_cirq_write_mask()
46 	writel_relaxed(mask, chip_data->base + offset + (cirq_num / 32) * 4);  in mtk_cirq_write_mask()
86 	data = data->parent_data;  in mtk_cirq_set_type()
87 	ret = data->chip->irq_set_type(data, type);  in mtk_cirq_set_type()
108 	if (is_of_node(fwspec->fwnode)) {  in mtk_cirq_domain_translate()
109 		if (fwspec->param_count != 3)  in mtk_cirq_domain_translate()
110 			return -EINVAL;  in mtk_cirq_domain_translate()
113 		if (fwspec->param[0] != 0)  in mtk_cirq_domain_translate()
114 			return -EINVAL;  in mtk_cirq_domain_translate()
116 		/* cirq support irq number check */  in mtk_cirq_domain_translate()
117 		if (fwspec->param[1] < cirq_data->ext_irq_start ||  in mtk_cirq_domain_translate()
118 		    fwspec->param[1] > cirq_data->ext_irq_end)  in mtk_cirq_domain_translate()
119 			return -EINVAL;  in mtk_cirq_domain_translate()
121 		*hwirq = fwspec->param[1] - cirq_data->ext_irq_start;  in mtk_cirq_domain_translate()
122 		*type = fwspec->param[2] & IRQ_TYPE_SENSE_MASK;  in mtk_cirq_domain_translate()
126 	return -EINVAL;  in mtk_cirq_domain_translate()
143 		return -EINVAL;  in mtk_cirq_domain_alloc()
147 				      domain->host_data);  in mtk_cirq_domain_alloc()
149 	parent_fwspec.fwnode = domain->parent->fwnode;  in mtk_cirq_domain_alloc()
164 	unsigned int irq, hwirq_num;  in mtk_cirq_suspend()  local
171 	 * resend the signals according to the status. So if don't clear the  in mtk_cirq_suspend()
172 	 * status, CIRQ will resend the wrong signals.  in mtk_cirq_suspend()
179 	 * - Iterate over all the CIRQ supported interrupts;  in mtk_cirq_suspend()
180 	 * - For each interrupt, inspect its pending and masked status at GIC  in mtk_cirq_suspend()
182 	 * - If pending and unmasked, it happened between  in mtk_cirq_suspend()
186 	hwirq_num = cirq_data->ext_irq_end - cirq_data->ext_irq_start + 1;  in mtk_cirq_suspend()
188 		irq = irq_find_mapping(cirq_data->domain, i);  in mtk_cirq_suspend()
189 		if (irq) {  in mtk_cirq_suspend()
190 			pendret = irq_get_irqchip_state(irq,  in mtk_cirq_suspend()
194 			maskret = irq_get_irqchip_state(irq,  in mtk_cirq_suspend()
204 		writel_relaxed(mask, cirq_data->base + CIRQ_ACK + (i / 32) * 4);  in mtk_cirq_suspend()
207 	/* set edge_only mode, record edge-triggerd interrupts */  in mtk_cirq_suspend()
209 	value = readl_relaxed(cirq_data->base + CIRQ_CONTROL);  in mtk_cirq_suspend()
211 	writel_relaxed(value, cirq_data->base + CIRQ_CONTROL);  in mtk_cirq_suspend()
220 	/* flush recorded interrupts, will send signals to parent controller */  in mtk_cirq_resume()
221 	value = readl_relaxed(cirq_data->base + CIRQ_CONTROL);  in mtk_cirq_resume()
222 	writel_relaxed(value | CIRQ_FLUSH, cirq_data->base + CIRQ_CONTROL);  in mtk_cirq_resume()
225 	value = readl_relaxed(cirq_data->base + CIRQ_CONTROL);  in mtk_cirq_resume()
227 	writel_relaxed(value, cirq_data->base + CIRQ_CONTROL);  in mtk_cirq_resume()
252 		pr_err("mtk_cirq: interrupt-parent not found\n");  in mtk_cirq_of_init()
253 		return -EINVAL;  in mtk_cirq_of_init()
258 		return -ENOMEM;  in mtk_cirq_of_init()
260 	cirq_data->base = of_iomap(node, 0);  in mtk_cirq_of_init()
261 	if (!cirq_data->base) {  in mtk_cirq_of_init()
263 		ret = -ENXIO;  in mtk_cirq_of_init()
267 	ret = of_property_read_u32_index(node, "mediatek,ext-irq-range", 0,  in mtk_cirq_of_init()
268 					 &cirq_data->ext_irq_start);  in mtk_cirq_of_init()
272 	ret = of_property_read_u32_index(node, "mediatek,ext-irq-range", 1,  in mtk_cirq_of_init()
273 					 &cirq_data->ext_irq_end);  in mtk_cirq_of_init()
277 	irq_num = cirq_data->ext_irq_end - cirq_data->ext_irq_start + 1;  in mtk_cirq_of_init()
282 		ret = -ENOMEM;  in mtk_cirq_of_init()
285 	cirq_data->domain = domain;  in mtk_cirq_of_init()
292 	iounmap(cirq_data->base);  in mtk_cirq_of_init()
298 IRQCHIP_DECLARE(mtk_cirq, "mediatek,mtk-cirq", mtk_cirq_of_init);