diff options
Diffstat (limited to 'drivers/gpio/gpio-xlp.c')
| -rw-r--r-- | drivers/gpio/gpio-xlp.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/drivers/gpio/gpio-xlp.c b/drivers/gpio/gpio-xlp.c index e02499a15..bc06a2cd2 100644 --- a/drivers/gpio/gpio-xlp.c +++ b/drivers/gpio/gpio-xlp.c @@ -18,6 +18,7 @@ #include <linux/module.h> #include <linux/irq.h> #include <linux/interrupt.h> +#include <linux/irqchip/chained_irq.h> /* * XLP GPIO has multiple 32 bit registers for each feature where each register @@ -208,25 +209,28 @@ static struct irq_chip xlp_gpio_irq_chip = { .flags = IRQCHIP_ONESHOT_SAFE, }; -static irqreturn_t xlp_gpio_generic_handler(int irq, void *data) +static void xlp_gpio_generic_handler(struct irq_desc *desc) { - struct xlp_gpio_priv *priv = data; + struct xlp_gpio_priv *priv = irq_desc_get_handler_data(desc); + struct irq_chip *irqchip = irq_desc_get_chip(desc); int gpio, regoff; u32 gpio_stat; regoff = -1; gpio_stat = 0; + + chained_irq_enter(irqchip, desc); for_each_set_bit(gpio, priv->gpio_enabled_mask, XLP_MAX_NR_GPIO) { if (regoff != gpio / XLP_GPIO_REGSZ) { regoff = gpio / XLP_GPIO_REGSZ; gpio_stat = readl(priv->gpio_intr_stat + regoff * 4); } + if (gpio_stat & BIT(gpio % XLP_GPIO_REGSZ)) generic_handle_irq(irq_find_mapping( priv->chip.irqdomain, gpio)); } - - return IRQ_HANDLED; + chained_irq_exit(irqchip, desc); } static int xlp_gpio_dir_output(struct gpio_chip *gc, unsigned gpio, int state) @@ -378,12 +382,6 @@ static int xlp_gpio_probe(struct platform_device *pdev) gc->get = xlp_gpio_get; spin_lock_init(&priv->lock); - - err = devm_request_irq(&pdev->dev, irq, xlp_gpio_generic_handler, - IRQ_TYPE_NONE, pdev->name, priv); - if (err) - return err; - irq_base = irq_alloc_descs(-1, XLP_GPIO_IRQ_BASE, gc->ngpio, 0); if (irq_base < 0) { dev_err(&pdev->dev, "Failed to allocate IRQ numbers\n"); @@ -401,6 +399,9 @@ static int xlp_gpio_probe(struct platform_device *pdev) goto out_gpio_remove; } + gpiochip_set_chained_irqchip(gc, &xlp_gpio_irq_chip, irq, + xlp_gpio_generic_handler); + dev_info(&pdev->dev, "registered %d GPIOs\n", gc->ngpio); return 0; |