diff options
| -rw-r--r-- | arch/arm/mach-w90x900/irq.c | 154 |
1 files changed, 146 insertions, 8 deletions
diff --git a/arch/arm/mach-w90x900/irq.c b/arch/arm/mach-w90x900/irq.c index 0b4fc194729..a296c9b81d2 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> +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 = w90x900_group_enable, \ + .gpen = ((2 ^ _num) - 1) << _ctrlbit, \ + } + +static void w90x900_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 w90x900_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 w90x900_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); } /* @@ -46,14 +150,48 @@ static void w90x900_irq_ack(unsigned int irq) static void w90x900_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 = { |