diff options
Diffstat (limited to 'arch/arm/common')
| -rw-r--r-- | arch/arm/common/locomo.c | 53 |
1 files changed, 30 insertions, 23 deletions
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c index d8a1261f029c..90ae00b631c2 100644 --- a/arch/arm/common/locomo.c +++ b/arch/arm/common/locomo.c @@ -32,6 +32,12 @@ #include <asm/hardware/locomo.h> +/* LoCoMo Interrupts */ +#define IRQ_LOCOMO_KEY (0) +#define IRQ_LOCOMO_GPIO (1) +#define IRQ_LOCOMO_LT (2) +#define IRQ_LOCOMO_SPI (3) + /* M62332 output channel selection */ #define M62332_EVR_CH 1 /* M62332 volume channel number */ /* 0 : CH.1 , 1 : CH. 2 */ @@ -58,6 +64,7 @@ struct locomo { struct device *dev; unsigned long phys; unsigned int irq; + int irq_base; spinlock_t lock; void __iomem *base; #ifdef CONFIG_PM @@ -81,9 +88,7 @@ struct locomo_dev_info { static struct locomo_dev_info locomo_devices[] = { { .devid = LOCOMO_DEVID_KEYBOARD, - .irq = { - IRQ_LOCOMO_KEY, - }, + .irq = { IRQ_LOCOMO_KEY }, .name = "locomo-keyboard", .offset = LOCOMO_KEYBOARD, .length = 16, @@ -135,18 +140,18 @@ static struct locomo_dev_info locomo_devices[] = { static void locomo_handler(unsigned int irq, struct irq_desc *desc) { + struct locomo *lchip = get_irq_chip_data(irq); int req, i; - void __iomem *mapbase = get_irq_chip_data(irq); /* Acknowledge the parent IRQ */ desc->chip->ack(irq); /* check why this interrupt was generated */ - req = locomo_readl(mapbase + LOCOMO_ICR) & 0x0f00; + req = locomo_readl(lchip->base + LOCOMO_ICR) & 0x0f00; if (req) { /* generate the next interrupt(s) */ - irq = IRQ_LOCOMO_KEY; + irq = lchip->irq_base; for (i = 0; i <= 3; i++, irq++) { if (req & (0x0100 << i)) { generic_handle_irq(irq); @@ -162,20 +167,20 @@ static void locomo_ack_irq(unsigned int irq) static void locomo_mask_irq(unsigned int irq) { - void __iomem *mapbase = get_irq_chip_data(irq); + struct locomo *lchip = get_irq_chip_data(irq); unsigned int r; - r = locomo_readl(mapbase + LOCOMO_ICR); - r &= ~(0x0010 << (irq - IRQ_LOCOMO_KEY)); - locomo_writel(r, mapbase + LOCOMO_ICR); + r = locomo_readl(lchip->base + LOCOMO_ICR); + r &= ~(0x0010 << (irq - lchip->irq_base)); + locomo_writel(r, lchip->base + LOCOMO_ICR); } static void locomo_unmask_irq(unsigned int irq) { - void __iomem *mapbase = get_irq_chip_data(irq); + struct locomo *lchip = get_irq_chip_data(irq); unsigned int r; - r = locomo_readl(mapbase + LOCOMO_ICR); - r |= (0x0010 << (irq - IRQ_LOCOMO_KEY)); - locomo_writel(r, mapbase + LOCOMO_ICR); + r = locomo_readl(lchip->base + LOCOMO_ICR); + r |= (0x0010 << (irq - lchip->irq_base)); + locomo_writel(r, lchip->base + LOCOMO_ICR); } static struct irq_chip locomo_chip = { @@ -187,21 +192,20 @@ static struct irq_chip locomo_chip = { static void locomo_setup_irq(struct locomo *lchip) { - int irq; - void __iomem *irqbase = lchip->base; + int irq = lchip->irq_base; /* * Install handler for IRQ_LOCOMO_HW. */ set_irq_type(lchip->irq, IRQ_TYPE_EDGE_FALLING); - set_irq_chip_data(lchip->irq, irqbase); + set_irq_chip_data(lchip->irq, lchip); set_irq_chained_handler(lchip->irq, locomo_handler); - /* install handlers for IRQ_LOCOMO_* */ - for (irq = IRQ_LOCOMO_KEY; irq < IRQ_LOCOMO_KEY + 4; irq++) { + /* Install handlers for IRQ_LOCOMO_* */ + for ( ; irq <= lchip->irq_base + 3; irq++) { set_irq_chip(irq, &locomo_chip); - set_irq_chip_data(irq, irqbase); - set_irq_handler(irq, handle_edge_irq); + set_irq_chip_data(irq, lchip); + set_irq_handler(irq, handle_level_irq); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } } @@ -248,7 +252,8 @@ locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info) dev->mapbase = 0; dev->length = info->length; - memmove(dev->irq, info->irq, sizeof(dev->irq)); + dev->irq[0] = (lchip->irq_base == NO_IRQ) ? + NO_IRQ : lchip->irq_base + info->irq[0]; ret = device_register(&dev->dev); if (ret) { @@ -365,6 +370,7 @@ static int locomo_resume(struct platform_device *dev) static int __locomo_probe(struct device *me, struct resource *mem, int irq) { + struct locomo_platform_data *pdata = me->platform_data; struct locomo *lchip; unsigned long r; int i, ret = -ENODEV; @@ -380,6 +386,7 @@ __locomo_probe(struct device *me, struct resource *mem, int irq) lchip->phys = mem->start; lchip->irq = irq; + lchip->irq_base = (pdata) ? pdata->irq_base : NO_IRQ; /* * Map the whole region. This also maps the @@ -446,7 +453,7 @@ __locomo_probe(struct device *me, struct resource *mem, int irq) * The interrupt controller must be initialised before any * other device to ensure that the interrupts are available. */ - if (lchip->irq != NO_IRQ) + if (lchip->irq != NO_IRQ && lchip->irq_base != NO_IRQ) locomo_setup_irq(lchip); for (i = 0; i < ARRAY_SIZE(locomo_devices); i++) |