diff options
Diffstat (limited to 'drivers/gpio/gpio-mpc8xxx.c')
| -rw-r--r-- | drivers/gpio/gpio-mpc8xxx.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index 57eb794b6fc9..a6952ba343a8 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -40,6 +40,7 @@ struct mpc8xxx_gpio_chip { */ u32 data; struct irq_domain *irq; + unsigned int irqn; const void *of_dev_id_data; }; @@ -350,13 +351,14 @@ static int mpc8xxx_probe(struct platform_device *pdev) struct of_mm_gpio_chip *mm_gc; struct gpio_chip *gc; const struct of_device_id *id; - unsigned hwirq; int ret; mpc8xxx_gc = devm_kzalloc(&pdev->dev, sizeof(*mpc8xxx_gc), GFP_KERNEL); if (!mpc8xxx_gc) return -ENOMEM; + platform_set_drvdata(pdev, mpc8xxx_gc); + spin_lock_init(&mpc8xxx_gc->lock); mm_gc = &mpc8xxx_gc->mm_gc; @@ -377,8 +379,8 @@ static int mpc8xxx_probe(struct platform_device *pdev) if (ret) return ret; - hwirq = irq_of_parse_and_map(np, 0); - if (hwirq == NO_IRQ) + mpc8xxx_gc->irqn = irq_of_parse_and_map(np, 0); + if (mpc8xxx_gc->irqn == NO_IRQ) return 0; mpc8xxx_gc->irq = irq_domain_add_linear(np, MPC8XXX_GPIO_PINS, @@ -394,14 +396,30 @@ static int mpc8xxx_probe(struct platform_device *pdev) out_be32(mm_gc->regs + GPIO_IER, 0xffffffff); out_be32(mm_gc->regs + GPIO_IMR, 0); - irq_set_handler_data(hwirq, mpc8xxx_gc); - irq_set_chained_handler(hwirq, mpc8xxx_gpio_irq_cascade); + irq_set_handler_data(mpc8xxx_gc->irqn, mpc8xxx_gc); + irq_set_chained_handler(mpc8xxx_gc->irqn, mpc8xxx_gpio_irq_cascade); + + return 0; +} + +static int mpc8xxx_remove(struct platform_device *pdev) +{ + struct mpc8xxx_gpio_chip *mpc8xxx_gc = platform_get_drvdata(pdev); + + if (mpc8xxx_gc->irq) { + irq_set_handler_data(mpc8xxx_gc->irqn, NULL); + irq_set_chained_handler(mpc8xxx_gc->irqn, NULL); + irq_domain_remove(mpc8xxx_gc->irq); + } + + of_mm_gpiochip_remove(&mpc8xxx_gc->mm_gc); return 0; } static struct platform_driver mpc8xxx_plat_driver = { .probe = mpc8xxx_probe, + .remove = mpc8xxx_remove, .driver = { .name = "gpio-mpc8xxx", .of_match_table = mpc8xxx_gpio_ids, |