1// SPDX-License-Identifier: GPL-2.0 2// Copyright (C) 2023 Cirrus Logic, Inc. and 3// Cirrus Logic International Semiconductor Ltd. 4 5#include <linux/device.h> 6#include <linux/fwnode.h> 7#include <linux/irq.h> 8#include <linux/irqdomain.h> 9#include <linux/soundwire/sdw.h> 10#include "irq.h" 11 12static int sdw_irq_map(struct irq_domain *h, unsigned int virq, 13 irq_hw_number_t hw) 14{ 15 struct sdw_bus *bus = h->host_data; 16 17 irq_set_chip_data(virq, bus); 18 irq_set_chip(virq, &bus->irq_chip); 19 irq_set_nested_thread(virq, 1); 20 irq_set_noprobe(virq); 21 22 return 0; 23} 24 25static const struct irq_domain_ops sdw_domain_ops = { 26 .map = sdw_irq_map, 27}; 28 29int sdw_irq_create(struct sdw_bus *bus, 30 struct fwnode_handle *fwnode) 31{ 32 bus->irq_chip.name = dev_name(bus->dev); 33 34 bus->domain = irq_domain_create_linear(fwnode, SDW_MAX_DEVICES, 35 &sdw_domain_ops, bus); 36 if (!bus->domain) { 37 dev_err(bus->dev, "Failed to add IRQ domain\n"); 38 return -EINVAL; 39 } 40 41 return 0; 42} 43 44void sdw_irq_delete(struct sdw_bus *bus) 45{ 46 irq_domain_remove(bus->domain); 47} 48 49void sdw_irq_create_mapping(struct sdw_slave *slave) 50{ 51 slave->irq = irq_create_mapping(slave->bus->domain, slave->dev_num); 52 if (!slave->irq) 53 dev_warn(&slave->dev, "Failed to map IRQ\n"); 54} 55 56void sdw_irq_dispose_mapping(struct sdw_slave *slave) 57{ 58 irq_dispose_mapping(irq_find_mapping(slave->bus->domain, slave->dev_num)); 59} 60