diff options
Diffstat (limited to 'drivers/gpio/gpio-altera.c')
| -rw-r--r-- | drivers/gpio/gpio-altera.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-altera.c b/drivers/gpio/gpio-altera.c index 039fef26546e..9508d764cce4 100644 --- a/drivers/gpio/gpio-altera.c +++ b/drivers/gpio/gpio-altera.c @@ -32,14 +32,12 @@ * will be blocked until the current one completes. * @interrupt_trigger : specifies the hardware configured IRQ trigger type * (rising, falling, both, high) -* @mapped_irq : kernel mapped irq number. */ struct altera_gpio_chip { struct gpio_chip gc; void __iomem *regs; raw_spinlock_t gpio_lock; int interrupt_trigger; - int mapped_irq; }; static void altera_gpio_irq_unmask(struct irq_data *d) @@ -115,7 +113,7 @@ static int altera_gpio_get(struct gpio_chip *gc, unsigned offset) return !!(readl(altera_gc->regs + ALTERA_GPIO_DATA) & BIT(offset)); } -static void altera_gpio_set(struct gpio_chip *gc, unsigned offset, int value) +static int altera_gpio_set(struct gpio_chip *gc, unsigned int offset, int value) { struct altera_gpio_chip *altera_gc = gpiochip_get_data(gc); unsigned long flags; @@ -129,6 +127,8 @@ static void altera_gpio_set(struct gpio_chip *gc, unsigned offset, int value) data_reg &= ~BIT(offset); writel(data_reg, altera_gc->regs + ALTERA_GPIO_DATA); raw_spin_unlock_irqrestore(&altera_gc->gpio_lock, flags); + + return 0; } static int altera_gpio_direction_input(struct gpio_chip *gc, unsigned offset) @@ -235,6 +235,7 @@ static int altera_gpio_probe(struct platform_device *pdev) int reg, ret; struct altera_gpio_chip *altera_gc; struct gpio_irq_chip *girq; + int mapped_irq; altera_gc = devm_kzalloc(&pdev->dev, sizeof(*altera_gc), GFP_KERNEL); if (!altera_gc) @@ -261,13 +262,18 @@ static int altera_gpio_probe(struct platform_device *pdev) altera_gc->gc.set = altera_gpio_set; altera_gc->gc.owner = THIS_MODULE; altera_gc->gc.parent = &pdev->dev; + altera_gc->gc.base = -1; + + altera_gc->gc.label = devm_kasprintf(dev, GFP_KERNEL, "%pfw", dev_fwnode(dev)); + if (!altera_gc->gc.label) + return -ENOMEM; altera_gc->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(altera_gc->regs)) return dev_err_probe(dev, PTR_ERR(altera_gc->regs), "failed to ioremap memory resource\n"); - altera_gc->mapped_irq = platform_get_irq_optional(pdev, 0); - if (altera_gc->mapped_irq < 0) + mapped_irq = platform_get_irq_optional(pdev, 0); + if (mapped_irq < 0) goto skip_irq; if (device_property_read_u32(dev, "altr,interrupt-type", ®)) { @@ -291,7 +297,7 @@ static int altera_gpio_probe(struct platform_device *pdev) return -ENOMEM; girq->default_type = IRQ_TYPE_NONE; girq->handler = handle_bad_irq; - girq->parents[0] = altera_gc->mapped_irq; + girq->parents[0] = mapped_irq; skip_irq: ret = devm_gpiochip_add_data(dev, &altera_gc->gc, altera_gc); |