diff options
| author | Anton Vorontsov <cbouatmailru@gmail.com> | 2012-01-04 09:09:35 +0400 |
|---|---|---|
| committer | Anton Vorontsov <cbouatmailru@gmail.com> | 2012-01-04 09:09:35 +0400 |
| commit | 251f39fe42dae863bd24e30864e6b66076ba076d (patch) | |
| tree | c804944bc17f3836d19cc8b5bc611dd1fb0ea915 /drivers/gpio/gpio-pl061.c | |
| parent | 9b8872273af6983b246252a6508fa7cf34c69d6e (diff) | |
| parent | 35b4c01e29bdd9632dabf9784ed3486333f00427 (diff) | |
| download | linux-251f39fe42dae863bd24e30864e6b66076ba076d.tar.xz | |
Merge branch 'power-supply-scope' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
Diffstat (limited to 'drivers/gpio/gpio-pl061.c')
| -rw-r--r-- | drivers/gpio/gpio-pl061.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c index 2c5a18f32bf3..093c90bd3c1d 100644 --- a/drivers/gpio/gpio-pl061.c +++ b/drivers/gpio/gpio-pl061.c @@ -118,7 +118,7 @@ static int pl061_to_irq(struct gpio_chip *gc, unsigned offset) { struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc); - if (chip->irq_base == (unsigned) -1) + if (chip->irq_base == NO_IRQ) return -EINVAL; return chip->irq_base + offset; @@ -246,6 +246,18 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id) if (chip == NULL) return -ENOMEM; + pdata = dev->dev.platform_data; + if (pdata) { + chip->gc.base = pdata->gpio_base; + chip->irq_base = pdata->irq_base; + } else if (dev->dev.of_node) { + chip->gc.base = -1; + chip->irq_base = NO_IRQ; + } else { + ret = -ENODEV; + goto free_mem; + } + if (!request_mem_region(dev->res.start, resource_size(&dev->res), "pl061")) { ret = -EBUSY; @@ -267,14 +279,11 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id) chip->gc.get = pl061_get_value; chip->gc.set = pl061_set_value; chip->gc.to_irq = pl061_to_irq; - chip->gc.base = pdata->gpio_base; chip->gc.ngpio = PL061_GPIO_NR; chip->gc.label = dev_name(&dev->dev); chip->gc.dev = &dev->dev; chip->gc.owner = THIS_MODULE; - chip->irq_base = pdata->irq_base; - ret = gpiochip_add(&chip->gc); if (ret) goto iounmap; @@ -283,7 +292,7 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id) * irq_chip support */ - if (chip->irq_base == (unsigned) -1) + if (chip->irq_base == NO_IRQ) return 0; writeb(0, chip->base + GPIOIE); /* disable irqs */ @@ -307,11 +316,13 @@ static int pl061_probe(struct amba_device *dev, const struct amba_id *id) list_add(&chip->list, chip_list); for (i = 0; i < PL061_GPIO_NR; i++) { - if (pdata->directions & (1 << i)) - pl061_direction_output(&chip->gc, i, - pdata->values & (1 << i)); - else - pl061_direction_input(&chip->gc, i); + if (pdata) { + if (pdata->directions & (1 << i)) + pl061_direction_output(&chip->gc, i, + pdata->values & (1 << i)); + else + pl061_direction_input(&chip->gc, i); + } irq_set_chip_and_handler(i + chip->irq_base, &pl061_irqchip, handle_simple_irq); |