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CRISv32: add irq domains support 

Add support for IRQ domains to the CRISv32 interrupt controller.

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
This commit is contained in:
Rabin Vincent 2015-02-08 16:15:19 +01:00 committed by Jesper Nilsson
parent 8fda64c23c
commit 43f7071e10
2 changed files with 26 additions and 3 deletions
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1
arch/cris/Kconfig
View File

@ -53,6 +53,7 @@ config CRIS
select OLD_SIGSUSPEND select OLD_SIGSUSPEND
select OLD_SIGACTION select OLD_SIGACTION
select ARCH_REQUIRE_GPIOLIB select ARCH_REQUIRE_GPIOLIB
select IRQ_DOMAIN if ETRAX_ARCH_V32
config HZ config HZ
int int

28
arch/cris/arch-v32/kernel/irq.c
View File

@ -10,6 +10,8 @@
#include <linux/errno.h> #include <linux/errno.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/profile.h> #include <linux/profile.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/proc_fs.h> #include <linux/proc_fs.h>
#include <linux/seq_file.h> #include <linux/seq_file.h>
#include <linux/threads.h> #include <linux/threads.h>
@ -431,6 +433,19 @@ crisv32_do_multiple(struct pt_regs* regs)
irq_exit(); irq_exit();
} }
static int crisv32_irq_map(struct irq_domain *h, unsigned int virq,
irq_hw_number_t hw_irq_num)
{
irq_set_chip_and_handler(virq, &crisv32_irq_type, handle_simple_irq);
return 0;
}
static struct irq_domain_ops crisv32_irq_ops = {
.map = crisv32_irq_map,
.xlate = irq_domain_xlate_onecell,
};
/* /*
* This is called by start_kernel. It fixes the IRQ masks and setup the * This is called by start_kernel. It fixes the IRQ masks and setup the
* interrupt vector table to point to bad_interrupt pointers. * interrupt vector table to point to bad_interrupt pointers.
@ -441,6 +456,8 @@ init_IRQ(void)
int i; int i;
int j; int j;
reg_intr_vect_rw_mask vect_mask = {0}; reg_intr_vect_rw_mask vect_mask = {0};
struct device_node *np;
struct irq_domain *domain;
/* Clear all interrupts masks. */ /* Clear all interrupts masks. */
for (i = 0; i < NBR_REGS; i++) for (i = 0; i < NBR_REGS; i++)
@ -449,10 +466,15 @@ init_IRQ(void)
for (i = 0; i < 256; i++) for (i = 0; i < 256; i++)
etrax_irv->v[i] = weird_irq; etrax_irv->v[i] = weird_irq;
/* Point all IRQ's to bad handlers. */ np = of_find_compatible_node(NULL, NULL, "axis,crisv32-intc");
domain = irq_domain_add_legacy(np, NR_IRQS - FIRST_IRQ,
FIRST_IRQ, FIRST_IRQ,
&crisv32_irq_ops, NULL);
BUG_ON(!domain);
irq_set_default_host(domain);
of_node_put(np);
for (i = FIRST_IRQ, j = 0; j < NR_IRQS; i++, j++) { for (i = FIRST_IRQ, j = 0; j < NR_IRQS; i++, j++) {
irq_set_chip_and_handler(j, &crisv32_irq_type,
handle_simple_irq);
set_exception_vector(i, interrupt[j]); set_exception_vector(i, interrupt[j]);
} }