diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:48:14 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-14 17:48:14 -0700 |
commit | 2ca7d674d7ab2220707b2ada0b690c0e7c95e7ac (patch) | |
tree | 9c0927ed1d540e5fd704c1f82689870786514655 /arch/arm/mach-w90x900/irq.c | |
parent | 2195d2818c37bdf263865f1e9effccdd9fc5f9d4 (diff) | |
parent | 87d721ad7a37b7650dd710c88dd5c6a5bf9fe996 (diff) |
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (257 commits)
[ARM] Update mach-types
ARM: 5636/1: Move vendor enum to AMBA include
ARM: Fix pfn_valid() for sparse memory
[ARM] orion5x: Add LaCie NAS 2Big Network support
[ARM] pxa/sharpsl_pm: zaurus c3000 aka spitz: fix resume
ARM: 5686/1: at91: Correct AC97 reset line in at91sam9263ek board
ARM: 5640/1: This patch modifies the support of AC97 on the at91sam9263 ek board
ARM: 5689/1: Update default config of HP Jornada 700-series machines
ARM: 5691/1: fix cache aliasing issues between kmap() and kmap_atomic() with highmem
ARM: 5688/1: ks8695_serial: disable_irq() lockup
ARM: 5687/1: fix an oops with highmem
ARM: 5684/1: Add nuc960 platform to w90x900
ARM: 5683/1: Add nuc950 platform to w90x900
ARM: 5682/1: Add cpu.c and dev.c and modify some files of w90p910 platform
ARM: 5626/1: add suspend/resume functions to amba-pl011 serial driver
ARM: 5625/1: fix hard coded 4K resource size in amba bus detection
MMC: MMCI: convert realview MMC to use gpiolib
ARM: 5685/1: Make MMCI driver compile without gpiolib
ARM: implement highpte
ARM: Show FIQ in /proc/interrupts on CONFIG_FIQ
...
Fix up trivial conflict in arch/arm/kernel/signal.c.
It was due to the TIF_NOTIFY_RESUME addition in commit d0420c83f ("KEYS:
Extend TIF_NOTIFY_RESUME to (almost) all architectures") and follow-ups.
Diffstat (limited to 'arch/arm/mach-w90x900/irq.c')
-rw-r--r-- | arch/arm/mach-w90x900/irq.c | 172 |
1 files changed, 155 insertions, 17 deletions
diff --git a/arch/arm/mach-w90x900/irq.c b/arch/arm/mach-w90x900/irq.c index 0b4fc194729..0ce9d8e867e 100644 --- a/arch/arm/mach-w90x900/irq.c +++ b/arch/arm/mach-w90x900/irq.c @@ -10,8 +10,7 @@ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * the Free Software Foundation;version 2 of the License. * */ @@ -29,9 +28,114 @@ #include <mach/hardware.h> #include <mach/regs-irq.h> -static void w90x900_irq_mask(unsigned int irq) +struct group_irq { + unsigned long gpen; + unsigned int enabled; + void (*enable)(struct group_irq *, int enable); +}; + +static DEFINE_SPINLOCK(groupirq_lock); + +#define DEFINE_GROUP(_name, _ctrlbit, _num) \ +struct group_irq group_##_name = { \ + .enable = nuc900_group_enable, \ + .gpen = ((1 << _num) - 1) << _ctrlbit, \ + } + +static void nuc900_group_enable(struct group_irq *gpirq, int enable); + +static DEFINE_GROUP(nirq0, 0, 4); +static DEFINE_GROUP(nirq1, 4, 4); +static DEFINE_GROUP(usbh, 8, 2); +static DEFINE_GROUP(ottimer, 16, 3); +static DEFINE_GROUP(gdma, 20, 2); +static DEFINE_GROUP(sc, 24, 2); +static DEFINE_GROUP(i2c, 26, 2); +static DEFINE_GROUP(ps2, 28, 2); + +static int group_irq_enable(struct group_irq *group_irq) +{ + unsigned long flags; + + spin_lock_irqsave(&groupirq_lock, flags); + if (group_irq->enabled++ == 0) + (group_irq->enable)(group_irq, 1); + spin_unlock_irqrestore(&groupirq_lock, flags); + + return 0; +} + +static void group_irq_disable(struct group_irq *group_irq) { + unsigned long flags; + + WARN_ON(group_irq->enabled == 0); + + spin_lock_irqsave(&groupirq_lock, flags); + if (--group_irq->enabled == 0) + (group_irq->enable)(group_irq, 0); + spin_unlock_irqrestore(&groupirq_lock, flags); +} + +static void nuc900_group_enable(struct group_irq *gpirq, int enable) +{ + unsigned int groupen = gpirq->gpen; + unsigned long regval; + + regval = __raw_readl(REG_AIC_GEN); + + if (enable) + regval |= groupen; + else + regval &= ~groupen; + + __raw_writel(regval, REG_AIC_GEN); +} + +static void nuc900_irq_mask(unsigned int irq) +{ + struct group_irq *group_irq; + + group_irq = NULL; + __raw_writel(1 << irq, REG_AIC_MDCR); + + switch (irq) { + case IRQ_GROUP0: + group_irq = &group_nirq0; + break; + + case IRQ_GROUP1: + group_irq = &group_nirq1; + break; + + case IRQ_USBH: + group_irq = &group_usbh; + break; + + case IRQ_T_INT_GROUP: + group_irq = &group_ottimer; + break; + + case IRQ_GDMAGROUP: + group_irq = &group_gdma; + break; + + case IRQ_SCGROUP: + group_irq = &group_sc; + break; + + case IRQ_I2CGROUP: + group_irq = &group_i2c; + break; + + case IRQ_P2SGROUP: + group_irq = &group_ps2; + break; + } + + if (group_irq) + group_irq_disable(group_irq); } /* @@ -39,37 +143,71 @@ static void w90x900_irq_mask(unsigned int irq) * to REG_AIC_EOSCR for ACK */ -static void w90x900_irq_ack(unsigned int irq) +static void nuc900_irq_ack(unsigned int irq) { __raw_writel(0x01, REG_AIC_EOSCR); } -static void w90x900_irq_unmask(unsigned int irq) +static void nuc900_irq_unmask(unsigned int irq) { - unsigned long mask; + struct group_irq *group_irq; + + group_irq = NULL; - if (irq == IRQ_T_INT_GROUP) { - mask = __raw_readl(REG_AIC_GEN); - __raw_writel(TIME_GROUP_IRQ | mask, REG_AIC_GEN); - __raw_writel(1 << IRQ_T_INT_GROUP, REG_AIC_MECR); - } __raw_writel(1 << irq, REG_AIC_MECR); + + switch (irq) { + case IRQ_GROUP0: + group_irq = &group_nirq0; + break; + + case IRQ_GROUP1: + group_irq = &group_nirq1; + break; + + case IRQ_USBH: + group_irq = &group_usbh; + break; + + case IRQ_T_INT_GROUP: + group_irq = &group_ottimer; + break; + + case IRQ_GDMAGROUP: + group_irq = &group_gdma; + break; + + case IRQ_SCGROUP: + group_irq = &group_sc; + break; + + case IRQ_I2CGROUP: + group_irq = &group_i2c; + break; + + case IRQ_P2SGROUP: + group_irq = &group_ps2; + break; + } + + if (group_irq) + group_irq_enable(group_irq); } -static struct irq_chip w90x900_irq_chip = { - .ack = w90x900_irq_ack, - .mask = w90x900_irq_mask, - .unmask = w90x900_irq_unmask, +static struct irq_chip nuc900_irq_chip = { + .ack = nuc900_irq_ack, + .mask = nuc900_irq_mask, + .unmask = nuc900_irq_unmask, }; -void __init w90x900_init_irq(void) +void __init nuc900_init_irq(void) { int irqno; __raw_writel(0xFFFFFFFE, REG_AIC_MDCR); for (irqno = IRQ_WDT; irqno <= IRQ_ADC; irqno++) { - set_irq_chip(irqno, &w90x900_irq_chip); + set_irq_chip(irqno, &nuc900_irq_chip); set_irq_handler(irqno, handle_level_irq); set_irq_flags(irqno, IRQF_VALID); } |