diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-3.18/030-MIPS-Always-use-IRQ-domains-for-CPU-IRQs.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-3.18/030-MIPS-Always-use-IRQ-domains-for-CPU-IRQs.patch | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.18/030-MIPS-Always-use-IRQ-domains-for-CPU-IRQs.patch b/target/linux/brcm63xx/patches-3.18/030-MIPS-Always-use-IRQ-domains-for-CPU-IRQs.patch new file mode 100644 index 0000000000..e7d091c95d --- /dev/null +++ b/target/linux/brcm63xx/patches-3.18/030-MIPS-Always-use-IRQ-domains-for-CPU-IRQs.patch @@ -0,0 +1,98 @@ +From 0f84c305351c993e4307e1e8c128d44760314e31 Mon Sep 17 00:00:00 2001 +From: Andrew Bresticker <abrestic@chromium.org> +Date: Thu, 18 Sep 2014 14:47:07 -0700 +Subject: [PATCH 1/3] MIPS: Always use IRQ domains for CPU IRQs + +Use an IRQ domain for the 8 CPU IRQs in both the DT and non-DT cases. + +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/7799/ +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +--- + arch/mips/Kconfig | 1 + + arch/mips/kernel/irq_cpu.c | 36 +++++++++++------------------------- + 2 files changed, 12 insertions(+), 25 deletions(-) + +--- a/arch/mips/Kconfig ++++ b/arch/mips/Kconfig +@@ -1056,6 +1056,7 @@ config MIPS_HUGE_TLB_SUPPORT + + config IRQ_CPU + bool ++ select IRQ_DOMAIN + + config IRQ_CPU_RM7K + bool +--- a/arch/mips/kernel/irq_cpu.c ++++ b/arch/mips/kernel/irq_cpu.c +@@ -94,28 +94,6 @@ static struct irq_chip mips_mt_cpu_irq_c + .irq_eoi = unmask_mips_irq, + }; + +-void __init mips_cpu_irq_init(void) +-{ +- int irq_base = MIPS_CPU_IRQ_BASE; +- int i; +- +- /* Mask interrupts. */ +- clear_c0_status(ST0_IM); +- clear_c0_cause(CAUSEF_IP); +- +- /* Software interrupts are used for MT/CMT IPI */ +- for (i = irq_base; i < irq_base + 2; i++) +- irq_set_chip_and_handler(i, cpu_has_mipsmt ? +- &mips_mt_cpu_irq_controller : +- &mips_cpu_irq_controller, +- handle_percpu_irq); +- +- for (i = irq_base + 2; i < irq_base + 8; i++) +- irq_set_chip_and_handler(i, &mips_cpu_irq_controller, +- handle_percpu_irq); +-} +- +-#ifdef CONFIG_IRQ_DOMAIN + static int mips_cpu_intc_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hw) + { +@@ -138,8 +116,7 @@ static const struct irq_domain_ops mips_ + .xlate = irq_domain_xlate_onecell, + }; + +-int __init mips_cpu_intc_init(struct device_node *of_node, +- struct device_node *parent) ++static void __init __mips_cpu_irq_init(struct device_node *of_node) + { + struct irq_domain *domain; + +@@ -151,7 +128,16 @@ int __init mips_cpu_intc_init(struct dev + &mips_cpu_intc_irq_domain_ops, NULL); + if (!domain) + panic("Failed to add irqdomain for MIPS CPU"); ++} + ++void __init mips_cpu_irq_init(void) ++{ ++ __mips_cpu_irq_init(NULL); ++} ++ ++int __init mips_cpu_intc_init(struct device_node *of_node, ++ struct device_node *parent) ++{ ++ __mips_cpu_irq_init(of_node); + return 0; + } +-#endif /* CONFIG_IRQ_DOMAIN */ |