Messages in this thread Patch in this message | | | Date | Tue, 10 Mar 2009 12:56:46 +0100 | From | Johannes Weiner <> | Subject | [patch 3/8] xtensa: variant irq set callbacks |
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Allow the core variant code to provide irq enable/disable callbacks.
The s6000 has a crossbar that multiplexes peripheral IRQ lines to a smaller number of core lines. These callbacks allow the s6000 variant to program the crossbar when core lines are toggled.
Signed-off-by: Johannes Weiner <jw@emlix.com> --- arch/xtensa/Kconfig | 3 +++ arch/xtensa/include/asm/irq.h | 7 +++++++ arch/xtensa/kernel/irq.c | 14 ++++++++++++++ 3 files changed, 24 insertions(+)
--- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -51,6 +51,9 @@ source "kernel/Kconfig.freezer" config MMU def_bool n +config VARIANT_IRQ_SWITCH + def_bool n + menu "Processor type and features" choice --- a/arch/xtensa/include/asm/irq.h +++ b/arch/xtensa/include/asm/irq.h @@ -14,6 +14,13 @@ #include <platform/hardware.h> #include <variant/core.h> +#ifdef CONFIG_VARIANT_IRQ_SWITCH +#include <variant/irq.h> +#else +static inline void variant_irq_enable(unsigned int irq) { } +static inline void variant_irq_disable(unsigned int irq) { } +#endif + #ifndef PLATFORM_NR_IRQS # define PLATFORM_NR_IRQS 0 #endif --- a/arch/xtensa/kernel/irq.c +++ b/arch/xtensa/kernel/irq.c @@ -132,6 +132,18 @@ static void xtensa_irq_unmask(unsigned i set_sr (cached_irq_mask, INTENABLE); } +static void xtensa_irq_enable(unsigned int irq) +{ + variant_irq_enable(irq); + xtensa_irq_unmask(irq); +} + +static void xtensa_irq_disable(unsigned int irq) +{ + xtensa_irq_mask(irq); + variant_irq_disable(irq); +} + static void xtensa_irq_ack(unsigned int irq) { set_sr(1 << irq, INTCLEAR); @@ -146,6 +158,8 @@ static int xtensa_irq_retrigger(unsigned static struct irq_chip xtensa_irq_chip = { .name = "xtensa", + .enable = xtensa_irq_enable, + .disable = xtensa_irq_disable, .mask = xtensa_irq_mask, .unmask = xtensa_irq_unmask, .ack = xtensa_irq_ack, --
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