196 lines
3.8 KiB
C
196 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2019 Google, LLC
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#define LOG_CATEGORY UCLASS_IRQ
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#include <common.h>
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#include <dm.h>
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#include <dt-structs.h>
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#include <irq.h>
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#include <log.h>
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#include <dm/device-internal.h>
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int irq_route_pmc_gpio_gpe(struct udevice *dev, uint pmc_gpe_num)
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{
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const struct irq_ops *ops = irq_get_ops(dev);
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if (!ops->route_pmc_gpio_gpe)
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return -ENOSYS;
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return ops->route_pmc_gpio_gpe(dev, pmc_gpe_num);
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}
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int irq_set_polarity(struct udevice *dev, uint irq, bool active_low)
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{
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const struct irq_ops *ops = irq_get_ops(dev);
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if (!ops->set_polarity)
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return -ENOSYS;
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return ops->set_polarity(dev, irq, active_low);
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}
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int irq_snapshot_polarities(struct udevice *dev)
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{
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const struct irq_ops *ops = irq_get_ops(dev);
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if (!ops->snapshot_polarities)
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return -ENOSYS;
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return ops->snapshot_polarities(dev);
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}
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int irq_restore_polarities(struct udevice *dev)
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{
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const struct irq_ops *ops = irq_get_ops(dev);
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if (!ops->restore_polarities)
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return -ENOSYS;
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return ops->restore_polarities(dev);
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}
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int irq_read_and_clear(struct irq *irq)
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{
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const struct irq_ops *ops = irq_get_ops(irq->dev);
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if (!ops->read_and_clear)
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return -ENOSYS;
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return ops->read_and_clear(irq);
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}
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#if CONFIG_IS_ENABLED(OF_PLATDATA)
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int irq_get_by_driver_info(struct udevice *dev,
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struct phandle_1_arg *cells, struct irq *irq)
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{
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int ret;
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ret = device_get_by_driver_info(cells->node, &irq->dev);
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if (ret)
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return ret;
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irq->id = cells->arg[0];
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return 0;
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}
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#else
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static int irq_of_xlate_default(struct irq *irq,
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struct ofnode_phandle_args *args)
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{
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log_debug("(irq=%p)\n", irq);
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if (args->args_count > 1) {
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log_debug("Invaild args_count: %d\n", args->args_count);
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return -EINVAL;
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}
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if (args->args_count)
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irq->id = args->args[0];
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else
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irq->id = 0;
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return 0;
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}
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static int irq_get_by_index_tail(int ret, ofnode node,
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struct ofnode_phandle_args *args,
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const char *list_name, int index,
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struct irq *irq)
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{
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struct udevice *dev_irq;
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const struct irq_ops *ops;
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assert(irq);
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irq->dev = NULL;
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if (ret)
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goto err;
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ret = uclass_get_device_by_ofnode(UCLASS_IRQ, args->node, &dev_irq);
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if (ret) {
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log_debug("uclass_get_device_by_ofnode failed: err=%d\n", ret);
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return ret;
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}
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irq->dev = dev_irq;
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ops = irq_get_ops(dev_irq);
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if (ops->of_xlate)
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ret = ops->of_xlate(irq, args);
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else
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ret = irq_of_xlate_default(irq, args);
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if (ret) {
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log_debug("of_xlate() failed: %d\n", ret);
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return ret;
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}
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return irq_request(dev_irq, irq);
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err:
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log_debug("Node '%s', property '%s', failed to request IRQ index %d: %d\n",
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ofnode_get_name(node), list_name, index, ret);
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return ret;
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}
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int irq_get_by_index(struct udevice *dev, int index, struct irq *irq)
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{
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struct ofnode_phandle_args args;
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int ret;
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ret = dev_read_phandle_with_args(dev, "interrupts-extended",
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"#interrupt-cells", 0, index, &args);
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return irq_get_by_index_tail(ret, dev_ofnode(dev), &args,
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"interrupts-extended", index > 0, irq);
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}
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#endif /* OF_PLATDATA */
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int irq_request(struct udevice *dev, struct irq *irq)
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{
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const struct irq_ops *ops;
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log_debug("(dev=%p, irq=%p)\n", dev, irq);
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ops = irq_get_ops(dev);
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irq->dev = dev;
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if (!ops->request)
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return 0;
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return ops->request(irq);
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}
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int irq_first_device_type(enum irq_dev_t type, struct udevice **devp)
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{
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int ret;
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ret = uclass_first_device_drvdata(UCLASS_IRQ, type, devp);
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if (ret)
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return log_msg_ret("find", ret);
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return 0;
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}
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#if CONFIG_IS_ENABLED(ACPIGEN)
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int irq_get_acpi(const struct irq *irq, struct acpi_irq *acpi_irq)
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{
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struct irq_ops *ops;
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if (!irq_is_valid(irq))
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return -EINVAL;
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ops = irq_get_ops(irq->dev);
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if (!ops->get_acpi)
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return -ENOSYS;
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return ops->get_acpi(irq, acpi_irq);
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}
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#endif
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UCLASS_DRIVER(irq) = {
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.id = UCLASS_IRQ,
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.name = "irq",
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};
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