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authorJoe Hershberger <joe.hershberger@ni.com>2011-11-11 15:55:36 -0600
committerKim Phillips <kim.phillips@freescale.com>2012-01-09 20:10:32 -0600
commit365d607033b8fcb0a8c27aabcb4bb05fb3b64465 (patch)
tree8530d4816c7014381fe5d84a7ab89b923115ecfe /drivers/gpio/mxc_gpio.c
parent5f533aeb5117ebe4ef1d10b5cae326334965035d (diff)
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gpio: Replace ARM gpio.h with the common API in include/asm-generic
ARM boards should use the generic GPIO API This means changing gpio to unsigned type Remove the unused gpio_toggle() function which is not part of the API Comment that free should not modify pin state Signed-off-by: Joe Hershberger <joe.hershberger@ni.com> Cc: Joe Hershberger <joe.hershberger@gmail.com> fixed merge conflict in da8xx_gpio.c, tegra2_gpio.c, and extended to the new mxs_gpio.c. Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Diffstat (limited to 'drivers/gpio/mxc_gpio.c')
-rw-r--r--drivers/gpio/mxc_gpio.c42
1 files changed, 20 insertions, 22 deletions
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index 908808d..df6bbbb 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -58,7 +58,7 @@ static int mxc_gpio_direction(unsigned int gpio,
u32 l;
if (port >= ARRAY_SIZE(gpio_ports))
- return -EINVAL;
+ return -1;
gpio &= 0x1f;
@@ -78,14 +78,14 @@ static int mxc_gpio_direction(unsigned int gpio,
return 0;
}
-void gpio_set_value(int gpio, int value)
+int gpio_set_value(unsigned gpio, int value)
{
unsigned int port = gpio >> 5;
struct gpio_regs *regs;
u32 l;
if (port >= ARRAY_SIZE(gpio_ports))
- return;
+ return -1;
gpio &= 0x1f;
@@ -97,55 +97,53 @@ void gpio_set_value(int gpio, int value)
else
l &= ~(1 << gpio);
writel(l, &regs->gpio_dr);
+
+ return 0;
}
-int gpio_get_value(int gpio)
+int gpio_get_value(unsigned gpio)
{
unsigned int port = gpio >> 5;
struct gpio_regs *regs;
- u32 l;
+ u32 val;
if (port >= ARRAY_SIZE(gpio_ports))
- return -EINVAL;
+ return -1;
gpio &= 0x1f;
regs = (struct gpio_regs *)gpio_ports[port];
- l = (readl(&regs->gpio_dr) >> gpio) & 0x01;
+ val = (readl(&regs->gpio_dr) >> gpio) & 0x01;
- return l;
+ return val;
}
-int gpio_request(int gp, const char *label)
+int gpio_request(unsigned gpio, const char *label)
{
- unsigned int port = gp >> 5;
+ unsigned int port = gpio >> 5;
if (port >= ARRAY_SIZE(gpio_ports))
- return -EINVAL;
+ return -1;
return 0;
}
-void gpio_free(int gp)
+int gpio_free(unsigned gpio)
{
+ return 0;
}
-void gpio_toggle_value(int gp)
-{
- gpio_set_value(gp, !gpio_get_value(gp));
-}
-
-int gpio_direction_input(int gp)
+int gpio_direction_input(unsigned gpio)
{
- return mxc_gpio_direction(gp, MXC_GPIO_DIRECTION_IN);
+ return mxc_gpio_direction(gpio, MXC_GPIO_DIRECTION_IN);
}
-int gpio_direction_output(int gp, int value)
+int gpio_direction_output(unsigned gpio, int value)
{
- int ret = mxc_gpio_direction(gp, MXC_GPIO_DIRECTION_OUT);
+ int ret = mxc_gpio_direction(gpio, MXC_GPIO_DIRECTION_OUT);
if (ret < 0)
return ret;
- gpio_set_value(gp, value);
+ gpio_set_value(gpio, value);
return 0;
}