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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-15 23:08:50 (GMT) |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-15 23:08:50 (GMT) |
commit | 65a6ec0d72a07f16719e9b7a96e1c4bae044b591 (patch) | |
tree | 344e03a5039a44982c1b78d6113633b21b434820 /arch/arm/mach-s3c2412/irq.c | |
parent | 541010e4b8921cd781ff02ae68028501457045b6 (diff) | |
parent | 0181b61a988424b5cc44fe09e6968142359c815e (diff) | |
download | linux-65a6ec0d72a07f16719e9b7a96e1c4bae044b591.tar.xz |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (95 commits)
[ARM] 4578/1: CM-x270: PCMCIA support
[ARM] 4577/1: ITE 8152 PCI bridge support
[ARM] 4576/1: CM-X270 machine support
[ARM] pxa: Avoid pxa_gpio_mode() in gpio_direction_{in,out}put()
[ARM] pxa: move pxa_set_mode() from pxa2xx_mainstone.c to mainstone.c
[ARM] pxa: move pxa_set_mode() from pxa2xx_lubbock.c to lubbock.c
[ARM] pxa: Make cpu_is_pxaXXX dependent on configuration symbols
[ARM] pxa: PXA3xx base support
[NET] smc91x: fix PXA DMA support code
[SERIAL] Fix console initialisation ordering
[ARM] pxa: tidy up arch/arm/mach-pxa/Makefile
[ARM] Update arch/arm/Kconfig for drivers/Kconfig changes
[ARM] 4600/1: fix kernel build failure with build-id-supporting binutils
[ARM] 4599/1: Preserve ATAG list for use with kexec (2.6.23)
[ARM] Rename consistent_sync() as dma_cache_maint()
[ARM] 4572/1: ep93xx: add cirrus logic edb9307 support
[ARM] 4596/1: S3C2412: Correct IRQs for SDI+CF and add decoding support
[ARM] 4595/1: ns9xxx: define registers as void __iomem * instead of volatile u32
[ARM] 4594/1: ns9xxx: use the new gpio functions
[ARM] 4593/1: ns9xxx: implement generic clockevents
...
Diffstat (limited to 'arch/arm/mach-s3c2412/irq.c')
-rw-r--r-- | arch/arm/mach-s3c2412/irq.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2412/irq.c b/arch/arm/mach-s3c2412/irq.c index f0d6682..e9d0c76 100644 --- a/arch/arm/mach-s3c2412/irq.c +++ b/arch/arm/mach-s3c2412/irq.c @@ -38,6 +38,9 @@ #include <asm/plat-s3c24xx/irq.h> #include <asm/plat-s3c24xx/pm.h> +#define INTMSK(start, end) ((1 << ((end) + 1 - (start))) - 1) +#define INTMSK_SUB(start, end) (INTMSK(start, end) << ((start - S3C2410_IRQSUB(0)))) + /* the s3c2412 changes the behaviour of IRQ_EINT0 through IRQ_EINT3 by * having them turn up in both the INT* and the EINT* registers. Whilst * both show the status, they both now need to be acked when the IRQs @@ -105,6 +108,51 @@ static struct irq_chip s3c2412_irq_eint0t4 = { .set_type = s3c_irqext_type, }; +#define INTBIT(x) (1 << ((x) - S3C2410_IRQSUB(0))) + +/* CF and SDI sub interrupts */ + +static void s3c2412_irq_demux_cfsdi(unsigned int irq, struct irq_desc *desc) +{ + unsigned int subsrc, submsk; + + subsrc = __raw_readl(S3C2410_SUBSRCPND); + submsk = __raw_readl(S3C2410_INTSUBMSK); + + subsrc &= ~submsk; + + if (subsrc & INTBIT(IRQ_S3C2412_SDI)) + desc_handle_irq(IRQ_S3C2412_SDI, irq_desc + IRQ_S3C2412_SDI); + + if (subsrc & INTBIT(IRQ_S3C2412_CF)) + desc_handle_irq(IRQ_S3C2412_CF, irq_desc + IRQ_S3C2412_CF); +} + +#define INTMSK_CFSDI (1UL << (IRQ_S3C2412_CFSDI - IRQ_EINT0)) +#define SUBMSK_CFSDI INTMSK_SUB(IRQ_S3C2412_SDI, IRQ_S3C2412_CF) + +static void s3c2412_irq_cfsdi_mask(unsigned int irqno) +{ + s3c_irqsub_mask(irqno, INTMSK_CFSDI, SUBMSK_CFSDI); +} + +static void s3c2412_irq_cfsdi_unmask(unsigned int irqno) +{ + s3c_irqsub_unmask(irqno, INTMSK_CFSDI); +} + +static void s3c2412_irq_cfsdi_ack(unsigned int irqno) +{ + s3c_irqsub_maskack(irqno, INTMSK_CFSDI, SUBMSK_CFSDI); +} + +static struct irq_chip s3c2412_irq_cfsdi = { + .name = "s3c2412-cfsdi", + .ack = s3c2412_irq_cfsdi_ack, + .mask = s3c2412_irq_cfsdi_mask, + .unmask = s3c2412_irq_cfsdi_unmask, +}; + static int s3c2412_irq_add(struct sys_device *sysdev) { unsigned int irqno; @@ -115,6 +163,16 @@ static int s3c2412_irq_add(struct sys_device *sysdev) set_irq_flags(irqno, IRQF_VALID); } + /* add demux support for CF/SDI */ + + set_irq_chained_handler(IRQ_S3C2412_CFSDI, s3c2412_irq_demux_cfsdi); + + for (irqno = IRQ_S3C2412_SDI; irqno <= IRQ_S3C2412_CF; irqno++) { + set_irq_chip(irqno, &s3c2412_irq_cfsdi); + set_irq_handler(irqno, handle_level_irq); + set_irq_flags(irqno, IRQF_VALID); + } + return 0; } |