irq_hw_number_t hwirq;
unsigned int type = IRQ_TYPE_NONE;
struct irq_fwspec *fwspec = data;
- void *parent_arg;
+ union gpio_irq_fwspec gpio_parent_fwspec = {};
unsigned int parent_hwirq;
unsigned int parent_type;
struct gpio_irq_chip *girq = &gc->irq;
irq_set_probe(irq);
/* This parent only handles asserted level IRQs */
- parent_arg = girq->populate_parent_alloc_arg(gc, parent_hwirq, parent_type);
- if (!parent_arg)
- return -ENOMEM;
+ ret = girq->populate_parent_alloc_arg(gc, &gpio_parent_fwspec,
+ parent_hwirq, parent_type);
+ if (ret)
+ return ret;
chip_dbg(gc, "alloc_irqs_parent for %d parent hwirq %d\n",
irq, parent_hwirq);
irq_set_lockdep_class(irq, gc->irq.lock_key, gc->irq.request_key);
- ret = irq_domain_alloc_irqs_parent(d, irq, 1, parent_arg);
+ ret = irq_domain_alloc_irqs_parent(d, irq, 1, &gpio_parent_fwspec);
/*
* If the parent irqdomain is msi, the interrupts have already
* been allocated, so the EEXIST is good.
"failed to allocate parent hwirq %d for hwirq %lu\n",
parent_hwirq, hwirq);
- kfree(parent_arg);
return ret;
}
ops->activate = gpiochip_irq_domain_activate;
ops->deactivate = gpiochip_irq_domain_deactivate;
ops->alloc = gpiochip_hierarchy_irq_domain_alloc;
- ops->free = irq_domain_free_irqs_common;
/*
- * We only allow overriding the translate() function for
+ * We only allow overriding the translate() and free() functions for
* hierarchical chips, and this should only be done if the user
- * really need something other than 1:1 translation.
+ * really need something other than 1:1 translation for translate()
+ * callback and free if user wants to free up any resources which
+ * were allocated during callbacks, for example populate_parent_alloc_arg.
*/
if (!ops->translate)
ops->translate = gpiochip_hierarchy_irq_domain_translate;
+ if (!ops->free)
+ ops->free = irq_domain_free_irqs_common;
}
static int gpiochip_hierarchy_add_domain(struct gpio_chip *gc)
return !!gc->irq.parent_domain;
}
-void *gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *gc,
- unsigned int parent_hwirq,
- unsigned int parent_type)
+int gpiochip_populate_parent_fwspec_twocell(struct gpio_chip *gc,
+ union gpio_irq_fwspec *gfwspec,
+ unsigned int parent_hwirq,
+ unsigned int parent_type)
{
- struct irq_fwspec *fwspec;
-
- fwspec = kmalloc(sizeof(*fwspec), GFP_KERNEL);
- if (!fwspec)
- return NULL;
+ struct irq_fwspec *fwspec = &gfwspec->fwspec;
fwspec->fwnode = gc->irq.parent_domain->fwnode;
fwspec->param_count = 2;
fwspec->param[0] = parent_hwirq;
fwspec->param[1] = parent_type;
- return fwspec;
+ return 0;
}
EXPORT_SYMBOL_GPL(gpiochip_populate_parent_fwspec_twocell);
-void *gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *gc,
- unsigned int parent_hwirq,
- unsigned int parent_type)
+int gpiochip_populate_parent_fwspec_fourcell(struct gpio_chip *gc,
+ union gpio_irq_fwspec *gfwspec,
+ unsigned int parent_hwirq,
+ unsigned int parent_type)
{
- struct irq_fwspec *fwspec;
-
- fwspec = kmalloc(sizeof(*fwspec), GFP_KERNEL);
- if (!fwspec)
- return NULL;
+ struct irq_fwspec *fwspec = &gfwspec->fwspec;
fwspec->fwnode = gc->irq.parent_domain->fwnode;
fwspec->param_count = 4;
fwspec->param[2] = 0;
fwspec->param[3] = parent_type;
- return fwspec;
+ return 0;
}
EXPORT_SYMBOL_GPL(gpiochip_populate_parent_fwspec_fourcell);
}
EXPORT_SYMBOL_GPL(gpiod_direction_output);
+/**
+ * gpiod_enable_hw_timestamp_ns - Enable hardware timestamp in nanoseconds.
+ *
+ * @desc: GPIO to enable.
+ * @flags: Flags related to GPIO edge.
+ *
+ * Return 0 in case of success, else negative error code.
+ */
+int gpiod_enable_hw_timestamp_ns(struct gpio_desc *desc, unsigned long flags)
+{
+ int ret = 0;
+ struct gpio_chip *gc;
+
+ VALIDATE_DESC(desc);
+
+ gc = desc->gdev->chip;
+ if (!gc->en_hw_timestamp) {
+ gpiod_warn(desc, "%s: hw ts not supported\n", __func__);
+ return -ENOTSUPP;
+ }
+
+ ret = gc->en_hw_timestamp(gc, gpio_chip_hwgpio(desc), flags);
+ if (ret)
+ gpiod_warn(desc, "%s: hw ts request failed\n", __func__);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(gpiod_enable_hw_timestamp_ns);
+
+/**
+ * gpiod_disable_hw_timestamp_ns - Disable hardware timestamp.
+ *
+ * @desc: GPIO to disable.
+ * @flags: Flags related to GPIO edge, same value as used during enable call.
+ *
+ * Return 0 in case of success, else negative error code.
+ */
+int gpiod_disable_hw_timestamp_ns(struct gpio_desc *desc, unsigned long flags)
+{
+ int ret = 0;
+ struct gpio_chip *gc;
+
+ VALIDATE_DESC(desc);
+
+ gc = desc->gdev->chip;
+ if (!gc->dis_hw_timestamp) {
+ gpiod_warn(desc, "%s: hw ts not supported\n", __func__);
+ return -ENOTSUPP;
+ }
+
+ ret = gc->dis_hw_timestamp(gc, gpio_chip_hwgpio(desc), flags);
+ if (ret)
+ gpiod_warn(desc, "%s: hw ts release failed\n", __func__);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(gpiod_disable_hw_timestamp_ns);
+
/**
* gpiod_set_config - sets @config for a GPIO
* @desc: descriptor of the GPIO for which to set the configuration