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https://github.com/brain-hackers/u-boot-brain
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![Walter Lozano](/assets/img/avatar_default.png)
In the current implementation, when dtoc parses a dtb to generate a struct platdata it converts the information related to linked nodes as pointers to struct platdata of destination nodes. By doing this, it makes difficult to get pointer to udevices created based on these information. This patch extends dtoc to use struct driver_info when populating information about linked nodes, which makes it easier to later get the devices created. In this context, reimplement functions like clk_get_by_index_platdata() which made use of the previous approach. Signed-off-by: Walter Lozano <walter.lozano@collabora.com> Reviewed-by: Simon Glass <sjg@chromium.org>
182 lines
3.5 KiB
C
182 lines
3.5 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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if (!irq)
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return 0;
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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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UCLASS_DRIVER(irq) = {
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.id = UCLASS_IRQ,
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.name = "irq",
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};
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