[PATCH 4/5] ARM: pxa168: added special case handler for keypad interrupts
From: Mark F. Brown <hidden>
Date: 2010-08-31 02:36:20
Subsystem:
arm port, mmp support, the rest · Maintainers:
Russell King, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2010-08-31 · Re: [PATCH 4/5] ARM: pxa168: added special case handler for keypad interrupts · Eric Miao <hidden>
- 2010-08-31 · Re: [PATCH 4/5] ARM: pxa168: added special case handler for keypad interrupts · Mark F. Brown <hidden>
- 2010-08-31 · Re: [PATCH 4/5] ARM: pxa168: added special case handler for keypad interrupts · Eric Miao <hidden>
- 2010-08-31 · Re: [PATCH 4/5] ARM: pxa168: added special case handler for keypad interrupts · Mark F. Brown <hidden>
- 2010-08-31 · Re: [PATCH 4/5] ARM: pxa168: added special case handler for keypad interrupts · Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Mark F. Brown <redacted> --- arch/arm/mach-mmp/irq-pxa168.c | 23 ++++++++++++++++++++++- 1 files changed, 22 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-mmp/irq-pxa168.c b/arch/arm/mach-mmp/irq-pxa168.c
index 52ff2f0..bfb0984 100644
--- a/arch/arm/mach-mmp/irq-pxa168.c
+++ b/arch/arm/mach-mmp/irq-pxa168.c@@ -17,6 +17,8 @@ #include <linux/io.h> #include <mach/regs-icu.h> +#include <mach/regs-apmu.h> +#include <mach/cputype.h> #include "common.h"
@@ -42,6 +44,19 @@ static struct irq_chip icu_irq_chip = { .unmask = icu_unmask_irq, }; +void handle_pxa168_keypad_irq(unsigned int irq, struct irq_desc *desc) +{ + uint32_t val; + uint32_t mask = APMU_PXA168_KP_WAKE_CLR; + + /* clear keypad wake event */ + val = __raw_readl(APMU_WAKE_CLR); + __raw_writel(val | mask, APMU_WAKE_CLR); + + /* handle irq */ + handle_level_irq(irq, desc); +} + void __init icu_init_irq(void) { int irq;
@@ -49,7 +64,13 @@ void __init icu_init_irq(void) for (irq = 0; irq < 64; irq++) { icu_mask_irq(irq); set_irq_chip(irq, &icu_irq_chip); - set_irq_handler(irq, handle_level_irq); + + /* special handler for keypad */ + if (cpu_is_pxa168() && irq == IRQ_PXA168_KEYPAD) + set_irq_handler(irq, handle_pxa168_keypad_irq); + else + set_irq_handler(irq, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); } }
--
1.7.0.4