diff options
| author | Andrew Bresticker <abrestic@chromium.org> | 2014-09-18 23:47:11 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-11-24 07:44:52 +0100 |
| commit | 079a4601768e248ba89dd08d4953e6dae607d7bd (patch) | |
| tree | d1e5975f6c556a94f4a40dc14195931b61202659 | |
| parent | MIPS: Set vint handler when mapping CPU interrupts (diff) | |
| download | linux-079a4601768e248ba89dd08d4953e6dae607d7bd.tar.xz linux-079a4601768e248ba89dd08d4953e6dae607d7bd.zip | |
MIPS: i8259: Use IRQ domains
Create a legacy IRQ domain for the 16 i8259 interrupts.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-by: Qais Yousef <qais.yousef@imgtec.com>
Tested-by: Qais Yousef <qais.yousef@imgtec.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Jeffrey Deans <jeffrey.deans@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Jonas Gorski <jogo@openwrt.org>
Cc: John Crispin <blogic@openwrt.org>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7804/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mips/kernel/i8259.c | 24 |
2 files changed, 20 insertions, 5 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 92033b7e275b..e08aeec7d916 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -975,6 +975,7 @@ config SYS_SUPPORTS_HOTPLUG_CPU config I8259 bool + select IRQ_DOMAIN config MIPS_BONITO64 bool diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c index 50b364897dda..a74ec3ae557c 100644 --- a/arch/mips/kernel/i8259.c +++ b/arch/mips/kernel/i8259.c @@ -12,6 +12,7 @@ #include <linux/init.h> #include <linux/ioport.h> #include <linux/interrupt.h> +#include <linux/irqdomain.h> #include <linux/kernel.h> #include <linux/spinlock.h> #include <linux/syscore_ops.h> @@ -308,6 +309,19 @@ static struct resource pic2_io_resource = { .flags = IORESOURCE_BUSY }; +static int i8259A_irq_domain_map(struct irq_domain *d, unsigned int virq, + irq_hw_number_t hw) +{ + irq_set_chip_and_handler(virq, &i8259A_chip, handle_level_irq); + irq_set_probe(virq); + return 0; +} + +static struct irq_domain_ops i8259A_ops = { + .map = i8259A_irq_domain_map, + .xlate = irq_domain_xlate_onecell, +}; + /* * On systems with i8259-style interrupt controllers we assume for * driver compatibility reasons interrupts 0 - 15 to be the i8259 @@ -315,17 +329,17 @@ static struct resource pic2_io_resource = { */ void __init init_i8259_irqs(void) { - int i; + struct irq_domain *domain; insert_resource(&ioport_resource, &pic1_io_resource); insert_resource(&ioport_resource, &pic2_io_resource); init_8259A(0); - for (i = I8259A_IRQ_BASE; i < I8259A_IRQ_BASE + 16; i++) { - irq_set_chip_and_handler(i, &i8259A_chip, handle_level_irq); - irq_set_probe(i); - } + domain = irq_domain_add_legacy(NULL, 16, I8259A_IRQ_BASE, 0, + &i8259A_ops, NULL); + if (!domain) + panic("Failed to add i8259 IRQ domain"); setup_irq(I8259A_IRQ_BASE + PIC_CASCADE_IR, &irq2); } |