diff options
| author | Rabin Vincent <rabin@rab.in> | 2015-02-08 16:15:19 +0100 |
|---|---|---|
| committer | Jesper Nilsson <jespern@axis.com> | 2015-03-25 09:47:43 +0100 |
| commit | 43f7071e107ede92ac9e499d218233c8bb4c3607 (patch) | |
| tree | 4250af03dfd7a10aa3af8d3fac07dba4c530ca93 /arch | |
| parent | 8fda64c23c2a2d421704d349696565b3a8366864 (diff) | |
| download | linux-43f7071e107ede92ac9e499d218233c8bb4c3607.tar.gz | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/cris/Kconfig | 1 | ||||
| -rw-r--r-- | arch/cris/arch-v32/kernel/irq.c | 28 |
2 files changed, 26 insertions, 3 deletions
diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig index 319660ed2994..c34561869856 100644 --- a/arch/cris/Kconfig +++ b/arch/cris/Kconfig @@ -53,6 +53,7 @@ config CRIS select OLD_SIGSUSPEND select OLD_SIGACTION select ARCH_REQUIRE_GPIOLIB + select IRQ_DOMAIN if ETRAX_ARCH_V32 config HZ int diff --git a/arch/cris/arch-v32/kernel/irq.c b/arch/cris/arch-v32/kernel/irq.c index 25437ae28128..bc871d2c594a 100644 --- a/arch/cris/arch-v32/kernel/irq.c +++ b/arch/cris/arch-v32/kernel/irq.c @@ -10,6 +10,8 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/profile.h> +#include <linux/of.h> +#include <linux/of_irq.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/threads.h> @@ -431,6 +433,19 @@ crisv32_do_multiple(struct pt_regs* regs) 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 * interrupt vector table to point to bad_interrupt pointers. @@ -441,6 +456,8 @@ init_IRQ(void) int i; int j; reg_intr_vect_rw_mask vect_mask = {0}; + struct device_node *np; + struct irq_domain *domain; /* Clear all interrupts masks. */ for (i = 0; i < NBR_REGS; i++) @@ -449,10 +466,15 @@ init_IRQ(void) for (i = 0; i < 256; i++) 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++) { - irq_set_chip_and_handler(j, &crisv32_irq_type, - handle_simple_irq); set_exception_vector(i, interrupt[j]); } |