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| author | Rafael Ignacio Zurita <rizurita@yahoo.com> | 2009-03-20 02:08:22 +0000 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-03-20 18:57:48 +0900 |
| commit | 3bf509230a626d11cba0e0145f552918092f586d (patch) | |
| tree | 89f12de362f46871e6238bc2ce6516f103e966a9 /arch/sh | |
| parent | 7a8fe8e320251d25274e89f610ffee936769250a (diff) | |
| download | lwn-3bf509230a626d11cba0e0145f552918092f586d.tar.gz lwn-3bf509230a626d11cba0e0145f552918092f586d.zip | |
sh: fix the HD64461 level-triggered interrupts handling
Rework the hd64461 demuxer code to fix the HD64461 level-triggered
interrupts handling, using handle_level_irq() as needed.
Signed-off-by: Rafael Ignacio Zurita <rizurita@yahoo.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/boards/mach-hp6xx/setup.c | 1 | ||||
| -rw-r--r-- | arch/sh/cchips/hd6446x/hd64461.c | 30 | ||||
| -rw-r--r-- | arch/sh/include/asm/hd64461.h | 1 |
3 files changed, 17 insertions, 15 deletions
diff --git a/arch/sh/boards/mach-hp6xx/setup.c b/arch/sh/boards/mach-hp6xx/setup.c index 746742bdc014..8f305b36358b 100644 --- a/arch/sh/boards/mach-hp6xx/setup.c +++ b/arch/sh/boards/mach-hp6xx/setup.c @@ -115,7 +115,6 @@ static struct sh_machine_vector mv_hp6xx __initmv = { .mv_setup = hp6xx_setup, /* IRQ's : CPU(64) + CCHIP(16) + FREE_TO_USE(6) */ .mv_nr_irqs = HD64461_IRQBASE + HD64461_IRQ_NUM + 6, - .mv_irq_demux = hd64461_irq_demux, /* Enable IRQ0 -> IRQ3 in IRQ_MODE */ .mv_init_irq = hp6xx_init_irq, }; diff --git a/arch/sh/cchips/hd6446x/hd64461.c b/arch/sh/cchips/hd6446x/hd64461.c index 27ceeb948bb1..25ef91061521 100644 --- a/arch/sh/cchips/hd6446x/hd64461.c +++ b/arch/sh/cchips/hd6446x/hd64461.c @@ -53,21 +53,22 @@ static struct irq_chip hd64461_irq_chip = { .unmask = hd64461_unmask_irq, }; -int hd64461_irq_demux(int irq) +static void hd64461_irq_demux(unsigned int irq, struct irq_desc *desc) { - if (irq == CONFIG_HD64461_IRQ) { - unsigned short bit; - unsigned short nirr = inw(HD64461_NIRR); - unsigned short nimr = inw(HD64461_NIMR); - int i; - - nirr &= ~nimr; - for (bit = 1, i = 0; i < 16; bit <<= 1, i++) - if (nirr & bit) - break; - irq = HD64461_IRQBASE + i; + unsigned short intv = ctrl_inw(HD64461_NIRR); + struct irq_desc *ext_desc; + unsigned int ext_irq = HD64461_IRQBASE; + + intv &= (1 << HD64461_IRQ_NUM) - 1; + + while (intv) { + if (intv & 1) { + ext_desc = irq_desc + ext_irq; + handle_level_irq(ext_irq, ext_desc); + } + intv >>= 1; + ext_irq++; } - return irq; } int __init setup_hd64461(void) @@ -93,6 +94,9 @@ int __init setup_hd64461(void) set_irq_chip_and_handler(i, &hd64461_irq_chip, handle_level_irq); + set_irq_chained_handler(CONFIG_HD64461_IRQ, hd64461_irq_demux); + set_irq_type(CONFIG_HD64461_IRQ, IRQ_TYPE_LEVEL_LOW); + #ifdef CONFIG_HD64461_ENABLER printk(KERN_INFO "HD64461: enabling PCMCIA devices\n"); __raw_writeb(0x4c, HD64461_PCC1CSCIER); diff --git a/arch/sh/include/asm/hd64461.h b/arch/sh/include/asm/hd64461.h index 8c1353baf00f..52b4b6238277 100644 --- a/arch/sh/include/asm/hd64461.h +++ b/arch/sh/include/asm/hd64461.h @@ -242,7 +242,6 @@ #include <asm/io_generic.h> /* arch/sh/cchips/hd6446x/hd64461/setup.c */ -int hd64461_irq_demux(int irq); void hd64461_register_irq_demux(int irq, int (*demux) (int irq, void *dev), void *dev); void hd64461_unregister_irq_demux(int irq); |