1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.
45 #define pin_to_hwirq(r, p)	((r)->parent_base + (p) - (r)->pin_base)
65 	unsigned long enable;  in __pdc_enable_intr()  local
73 		enable = pdc_reg_read(IRQ_ENABLE_BANK, index);  in __pdc_enable_intr()
74 		__assign_bit(mask, &enable, on);  in __pdc_enable_intr()
75 		pdc_reg_write(IRQ_ENABLE_BANK, index, enable);  in __pdc_enable_intr()
77 		enable = pdc_reg_read(IRQ_i_CFG, pin_out);  in __pdc_enable_intr()
78 		__assign_bit(IRQ_i_CFG_IRQ_ENABLE, &enable, on);  in __pdc_enable_intr()
79 		pdc_reg_write(IRQ_i_CFG, pin_out, enable);  in __pdc_enable_intr()
88 	__pdc_enable_intr(d->hwirq, on);  in pdc_enable_intr()
105  * GIC does not handle falling edge or active low. To allow falling edge and
106  * active low interrupts to be handled at GIC, PDC has an inverter that inverts
107  * falling edge into a rising edge and active low into an active high.
110  * Level sensitive active low    LOW
114  * Level sensitive active High   HIGH
130  * @d: the interrupt data
165 		return -EINVAL;  in qcom_pdc_gic_set_type()
168 	old_pdc_type = pdc_reg_read(IRQ_i_CFG, d->hwirq);  in qcom_pdc_gic_set_type()
170 	pdc_reg_write(IRQ_i_CFG, d->hwirq, pdc_type);  in qcom_pdc_gic_set_type()
224 			  unsigned int nr_irqs, void *data)  in qcom_pdc_alloc()  argument
226 	struct irq_fwspec *fwspec = data;  in qcom_pdc_alloc()
247 		return irq_domain_disconnect_hierarchy(domain->parent, virq);  in qcom_pdc_alloc()
255 	parent_fwspec.fwnode      = domain->parent->fwnode;  in qcom_pdc_alloc()
275 	n = of_property_count_elems_of_size(np, "qcom,pdc-ranges", sizeof(u32));  in pdc_setup_pin_mapping()
277 		return -EINVAL;  in pdc_setup_pin_mapping()
283 		return -ENOMEM;  in pdc_setup_pin_mapping()
287 		ret = of_property_read_u32_index(np, "qcom,pdc-ranges",  in pdc_setup_pin_mapping()
292 		ret = of_property_read_u32_index(np, "qcom,pdc-ranges",  in pdc_setup_pin_mapping()
297 		ret = of_property_read_u32_index(np, "qcom,pdc-ranges",  in pdc_setup_pin_mapping()
321 		return -EINVAL;  in qcom_pdc_init()
330 		return -ENXIO;  in qcom_pdc_init()
338 		ret = -ENXIO;  in qcom_pdc_init()
344 		pr_err("%pOF: failed to init PDC pin-hwirq mapping\n", node);  in qcom_pdc_init()
355 		ret = -ENOMEM;  in qcom_pdc_init()