diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2012-10-16 21:00:09 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2012-10-26 09:37:22 +0200 |
| commit | d0235677311cbd404a3dcd3c0f24bf15dd24dd36 (patch) | |
| tree | 8d826d9579e4a293573c8ad27558281484d2e33c /drivers/gpio/gpio-tegra.c | |
| parent | 529f2ad5e374f61987a8312603963c61d75a890a (diff) | |
| download | lwn-d0235677311cbd404a3dcd3c0f24bf15dd24dd36.tar.gz lwn-d0235677311cbd404a3dcd3c0f24bf15dd24dd36.zip | |
gpio/tegra: convert to use linear irqdomain
The Tegra driver tries to do the work of irq_domain_add_linear()
by reserving a bunch of descriptors somewhere and keeping track
of the base offset, then calling irq_domain_add_legacy(). Let's
stop doing that and simply use the linear IRQ domain.
For this to work: use irq_create_mapping() in the IRQ iterator
so that the descriptors get allocated here.
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-tegra.c')
| -rw-r--r-- | drivers/gpio/gpio-tegra.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index d982593d7563..c7c175a4aff1 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -380,7 +380,6 @@ static int __devinit tegra_gpio_probe(struct platform_device *pdev) { const struct of_device_id *match; struct tegra_gpio_soc_config *config; - int irq_base; struct resource *res; struct tegra_gpio_bank *bank; int gpio; @@ -417,14 +416,11 @@ static int __devinit tegra_gpio_probe(struct platform_device *pdev) return -ENODEV; } - irq_base = irq_alloc_descs(-1, 0, tegra_gpio_chip.ngpio, 0); - if (irq_base < 0) { - dev_err(&pdev->dev, "Couldn't allocate IRQ numbers\n"); - return -ENODEV; - } - irq_domain = irq_domain_add_legacy(pdev->dev.of_node, - tegra_gpio_chip.ngpio, irq_base, 0, + irq_domain = irq_domain_add_linear(pdev->dev.of_node, + tegra_gpio_chip.ngpio, &irq_domain_simple_ops, NULL); + if (!irq_domain) + return -ENODEV; for (i = 0; i < tegra_gpio_bank_count; i++) { res = platform_get_resource(pdev, IORESOURCE_IRQ, i); @@ -464,7 +460,7 @@ static int __devinit tegra_gpio_probe(struct platform_device *pdev) gpiochip_add(&tegra_gpio_chip); for (gpio = 0; gpio < tegra_gpio_chip.ngpio; gpio++) { - int irq = irq_find_mapping(irq_domain, gpio); + int irq = irq_create_mapping(irq_domain, gpio); /* No validity check; all Tegra GPIOs are valid IRQs */ bank = &tegra_gpio_banks[GPIO_BANK(gpio)]; |