clk: Fix clk func names in comments

[oweals/u-boot.git] / drivers / misc / irq-uclass.c

diff --git a/drivers/misc/irq-uclass.c b/drivers/misc/irq-uclass.c
index d5182cf1497eff62c8430093bf56d2be5dd330b6..61aa10e4658ed251673f4e2b9e2245f06af1f49f 100644 (file)
--- a/drivers/misc/irq-uclass.c
+++ b/drivers/misc/irq-uclass.c
@@ -1,11 +1,16 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+ * Copyright 2019 Google, LLC
+ * Written by Simon Glass <sjg@chromium.org>
  */
 
+#define LOG_CATEGORY UCLASS_IRQ
+
 #include <common.h>
 #include <dm.h>
+#include <dt-structs.h>
 #include <irq.h>
+#include <dm/device-internal.h>
 
 int irq_route_pmc_gpio_gpe(struct udevice *dev, uint pmc_gpe_num)
 {
@@ -47,6 +52,130 @@ int irq_restore_polarities(struct udevice *dev)
        return ops->restore_polarities(dev);
 }
 
+int irq_read_and_clear(struct irq *irq)
+{
+       const struct irq_ops *ops = irq_get_ops(irq->dev);
+
+       if (!ops->read_and_clear)
+               return -ENOSYS;
+
+       return ops->read_and_clear(irq);
+}
+
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+int irq_get_by_index_platdata(struct udevice *dev, int index,
+                             struct phandle_1_arg *cells, struct irq *irq)
+{
+       int ret;
+
+       if (index != 0)
+               return -ENOSYS;
+       ret = uclass_get_device(UCLASS_IRQ, 0, &irq->dev);
+       if (ret)
+               return ret;
+       irq->id = cells[0].arg[0];
+
+       return 0;
+}
+#else
+static int irq_of_xlate_default(struct irq *irq,
+                               struct ofnode_phandle_args *args)
+{
+       log_debug("(irq=%p)\n", irq);
+
+       if (args->args_count > 1) {
+               log_debug("Invaild args_count: %d\n", args->args_count);
+               return -EINVAL;
+       }
+
+       if (args->args_count)
+               irq->id = args->args[0];
+       else
+               irq->id = 0;
+
+       return 0;
+}
+
+static int irq_get_by_index_tail(int ret, ofnode node,
+                                struct ofnode_phandle_args *args,
+                                const char *list_name, int index,
+                                struct irq *irq)
+{
+       struct udevice *dev_irq;
+       const struct irq_ops *ops;
+
+       assert(irq);
+       irq->dev = NULL;
+       if (ret)
+               goto err;
+
+       ret = uclass_get_device_by_ofnode(UCLASS_IRQ, args->node, &dev_irq);
+       if (ret) {
+               log_debug("uclass_get_device_by_ofnode failed: err=%d\n", ret);
+               return ret;
+       }
+
+       irq->dev = dev_irq;
+
+       ops = irq_get_ops(dev_irq);
+
+       if (ops->of_xlate)
+               ret = ops->of_xlate(irq, args);
+       else
+               ret = irq_of_xlate_default(irq, args);
+       if (ret) {
+               log_debug("of_xlate() failed: %d\n", ret);
+               return ret;
+       }
+
+       return irq_request(dev_irq, irq);
+err:
+       log_debug("Node '%s', property '%s', failed to request IRQ index %d: %d\n",
+                 ofnode_get_name(node), list_name, index, ret);
+       return ret;
+}
+
+int irq_get_by_index(struct udevice *dev, int index, struct irq *irq)
+{
+       struct ofnode_phandle_args args;
+       int ret;
+
+       ret = dev_read_phandle_with_args(dev, "interrupts-extended",
+                                        "#interrupt-cells", 0, index, &args);
+
+       return irq_get_by_index_tail(ret, dev_ofnode(dev), &args,
+                                    "interrupts-extended", index > 0, irq);
+}
+#endif /* OF_PLATDATA */
+
+int irq_request(struct udevice *dev, struct irq *irq)
+{
+       const struct irq_ops *ops;
+
+       log_debug("(dev=%p, irq=%p)\n", dev, irq);
+       if (!irq)
+               return 0;
+       ops = irq_get_ops(dev);
+
+       irq->dev = dev;
+
+       if (!ops->request)
+               return 0;
+
+       return ops->request(irq);
+}
+
+int irq_first_device_type(enum irq_dev_t type, struct udevice **devp)
+{
+       int ret;
+
+       ret = uclass_first_device_drvdata(UCLASS_IRQ, type, devp);
+       if (ret)
+               return log_msg_ret("find", ret);
+
+       return 0;
+}
+
 UCLASS_DRIVER(irq) = {
        .id             = UCLASS_IRQ,
        .name           = "irq",