int __init request_dt_irq(const struct dt_irq *irq,
void (*handler)(int, void *, struct cpu_user_regs *),
unsigned long irqflags, const char *devname, void *dev_id)
{
struct irqaction *action;
int retval;
/*
* Sanity-check: shared interrupts must pass in a real dev-ID,
* otherwise we'll have trouble later trying to figure out
* which interrupt is which (messes up the interrupt freeing
* logic etc).
*/
if (irq->irq >= nr_irqs)
return -EINVAL;
if (!handler)
return -EINVAL;
action = xmalloc(struct irqaction);
if (!action)
return -ENOMEM;
action->handler = handler;
action->name = devname;
action->dev_id = dev_id;
action->free_on_release = 1;
retval = setup_dt_irq(irq, action);
if (retval)
xfree(action);
return retval;
}
static void __init omap_uart_init_postirq(struct serial_port *port)
{
struct omap_uart *uart = port->uart;
uart->irqaction.handler = omap_uart_interrupt;
uart->irqaction.name = "omap_uart";
uart->irqaction.dev_id = port;
if ( setup_dt_irq(&uart->irq, &uart->irqaction) != 0 )
{
dprintk(XENLOG_ERR, "Failed to allocated omap_uart IRQ %d\n",
uart->irq.irq);
return;
}
/* Enable interrupts */
omap_write(uart, UART_IER, UART_IER_ERDAI|UART_IER_ETHREI|UART_IER_ELSI);
}
static void __init exynos4210_uart_init_postirq(struct serial_port *port)
{
struct exynos4210_uart *uart = port->uart;
int rc;
uart->irqaction.handler = exynos4210_uart_interrupt;
uart->irqaction.name = "exynos4210_uart";
uart->irqaction.dev_id = port;
if ( (rc = setup_dt_irq(&uart->irq, &uart->irqaction)) != 0 )
dprintk(XENLOG_ERR, "Failed to allocated exynos4210_uart IRQ %d\n",
uart->irq.irq);
/* Unmask interrupts */
exynos4210_write(uart, UINTM, ~UINTM_ALLI);
/* Clear pending interrupts */
exynos4210_write(uart, UINTP, UINTM_ALLI);
/* Enable interrupts */
exynos4210_write(uart, UMCON, exynos4210_read(uart, UMCON) | UMCON_INT_EN);
}
