/*
* Copyright ( C ) 2012 Thomas Petazzoni
*
* Thomas Petazzoni < thomas . petazzoni @ free - electrons . com >
*
* This file is licensed under the terms of the GNU General Public
* License version 2 . This program is licensed " as is " without any
* warranty of any kind , whether express or implied .
*/
#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/irqchip.h>
#include <linux/platform_device.h>
/*
* This special of_device_id is the sentinel at the end of the
* of_device_id [ ] array of all irqchips . It is automatically placed at
* the end of the array by the linker , thanks to being part of a
* special section .
*/
static const struct of_device_id
irqchip_of_match_end __used __section("__irqchip_of_table_end" );
extern struct of_device_id __irqchip_of_table[];
void __init irqchip_init(void )
{
of_irq_init(__irqchip_of_table);
acpi_probe_device_table(irqchip);
}
int platform_irqchip_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct device_node *par_np __free(device_node) = of_irq_find_parent(np);
of_irq_init_cb_t irq_init_cb = of_device_get_match_data(&pdev->dev);
if (!irq_init_cb) {
return -EINVAL;
}
if (par_np == np)
par_np = NULL;
/*
* If there ' s a parent interrupt controller and none of the parent irq
* domains have been registered , that means the parent interrupt
* controller has not been initialized yet . it ' s not time for this
* interrupt controller to initialize . So , defer probe of this
* interrupt controller . The actual initialization callback of this
* interrupt controller can check for specific domains as necessary .
*/
if (par_np && !irq_find_matching_host(par_np, DOMAIN_BUS_ANY)) {
return -EPROBE_DEFER;
}
return irq_init_cb(np, par_np);
}
EXPORT_SYMBOL_GPL(platform_irqchip_probe);
Messung V0.5 in Prozent C=98 H=100 G=98
¤ Dauer der Verarbeitung: 0.6 Sekunden
(vorverarbeitet am 2026-09-29)
¤
*© Formatika GbR, Deutschland