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authorDaniel Mack <zonque@gmail.com>2012-07-22 18:55:44 +0400
committerHaojian Zhuang <haojian.zhuang@gmail.com>2012-08-16 12:14:36 +0400
commit9450be76d0e3ebedf301aa09e4f98b4d3a175229 (patch)
tree728c52b9fae8251ceeb9cde66b32e1200d0049e7 /drivers/gpio/gpio-pxa.c
parent1e7ba630d4aeabef8e022a4099b20ab9f660d37d (diff)
downloadlinux-9450be76d0e3ebedf301aa09e4f98b4d3a175229.tar.xz
GPIO: gpio-pxa: simplify pxa_gpio_to_irq() and pxa_irq_to_chip()
Simplify the code in gpio-pxa.c and make them based on irq_base. When not probed from devicetree, initialize irq_base from PXA_GPIO_TO_IRQ() or MMP_GPIO_TO_IRQ(), respectively, so the non-DT case still works. Only tested on PXA3xx. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Diffstat (limited to 'drivers/gpio/gpio-pxa.c')
-rw-r--r--drivers/gpio/gpio-pxa.c70
1 files changed, 16 insertions, 54 deletions
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index 58a6a63a6ece..6d0cb9dff27d 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -59,6 +59,7 @@
#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
int pxa_last_gpio;
+static int irq_base;
#ifdef CONFIG_OF
static struct irq_domain *domain;
@@ -166,63 +167,14 @@ static inline int __gpio_is_occupied(unsigned gpio)
return ret;
}
-#ifdef CONFIG_ARCH_PXA
-static inline int __pxa_gpio_to_irq(int gpio)
-{
- if (gpio_is_pxa_type(gpio_type))
- return PXA_GPIO_TO_IRQ(gpio);
- return -1;
-}
-
-static inline int __pxa_irq_to_gpio(int irq)
-{
- if (gpio_is_pxa_type(gpio_type))
- return irq - PXA_GPIO_TO_IRQ(0);
- return -1;
-}
-#else
-static inline int __pxa_gpio_to_irq(int gpio) { return -1; }
-static inline int __pxa_irq_to_gpio(int irq) { return -1; }
-#endif
-
-#ifdef CONFIG_ARCH_MMP
-static inline int __mmp_gpio_to_irq(int gpio)
-{
- if (gpio_is_mmp_type(gpio_type))
- return MMP_GPIO_TO_IRQ(gpio);
- return -1;
-}
-
-static inline int __mmp_irq_to_gpio(int irq)
-{
- if (gpio_is_mmp_type(gpio_type))
- return irq - MMP_GPIO_TO_IRQ(0);
- return -1;
-}
-#else
-static inline int __mmp_gpio_to_irq(int gpio) { return -1; }
-static inline int __mmp_irq_to_gpio(int irq) { return -1; }
-#endif
-
static int pxa_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
- int gpio, ret;
-
- gpio = chip->base + offset;
- ret = __pxa_gpio_to_irq(gpio);
- if (ret >= 0)
- return ret;
- return __mmp_gpio_to_irq(gpio);
+ return chip->base + offset + irq_base;
}
int pxa_irq_to_gpio(int irq)
{
- int ret;
-
- ret = __pxa_irq_to_gpio(irq);
- if (ret >= 0)
- return ret;
- return __mmp_irq_to_gpio(irq);
+ return irq - irq_base;
}
static int pxa_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
@@ -510,7 +462,7 @@ const struct irq_domain_ops pxa_irq_domain_ops = {
#ifdef CONFIG_OF
static int __devinit pxa_gpio_probe_dt(struct platform_device *pdev)
{
- int ret, nr_banks, nr_gpios, irq_base;
+ int ret, nr_banks, nr_gpios;
struct device_node *prev, *next, *np = pdev->dev.of_node;
const struct of_device_id *of_id =
of_match_device(pxa_gpio_dt_ids, &pdev->dev);
@@ -564,10 +516,20 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev)
int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0;
ret = pxa_gpio_probe_dt(pdev);
- if (ret < 0)
+ if (ret < 0) {
pxa_last_gpio = pxa_gpio_nums();
- else
+#ifdef CONFIG_ARCH_PXA
+ if (gpio_is_pxa_type(gpio_type))
+ irq_base = PXA_GPIO_TO_IRQ(0);
+#endif
+#ifdef CONFIG_ARCH_MMP
+ if (gpio_is_mmp_type(gpio_type))
+ irq_base = MMP_GPIO_TO_IRQ(0);
+#endif
+ } else {
use_of = 1;
+ }
+
if (!pxa_last_gpio)
return -EINVAL;