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author | Lars-Peter Clausen <lars@metafoo.de> | 2009-05-18 17:55:41 +0000 |
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committer | Lars-Peter Clausen <lars@metafoo.de> | 2009-05-18 17:55:41 +0000 |
commit | 9d1188140e188101782d10f520c21088ef9c434a (patch) | |
tree | dd10e61f382ace3afbe40af3af8238757cf5e3d0 /target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-gpio.c | |
parent | 6aa4a3e4719e5e795d422ef0b5983b22317c2b79 (diff) | |
download | master-187ad058-9d1188140e188101782d10f520c21088ef9c434a.tar.gz master-187ad058-9d1188140e188101782d10f520c21088ef9c434a.tar.bz2 master-187ad058-9d1188140e188101782d10f520c21088ef9c434a.zip |
[s3c24xx] bump to 2.6.30-rc6
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15918 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-gpio.c')
-rw-r--r-- | target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-gpio.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-gpio.c b/target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-gpio.c new file mode 100644 index 0000000000..45d0bf9126 --- /dev/null +++ b/target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-gpio.c @@ -0,0 +1,62 @@ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/io.h> + +#include <linux/glamo-gpio.h> + +#include "glamo-core.h" +#include "glamo-regs.h" + +void glamo_gpio_setpin(struct glamo_core *glamo, unsigned int pin, + unsigned int value) +{ + unsigned int reg = REG_OF_GPIO(pin); + u_int16_t tmp; + + spin_lock(&glamo->lock); + tmp = readw(glamo->base + reg); + if (value) + tmp |= OUTPUT_BIT(pin); + else + tmp &= ~OUTPUT_BIT(pin); + writew(tmp, glamo->base + reg); + spin_unlock(&glamo->lock); +} +EXPORT_SYMBOL(glamo_gpio_setpin); + +int glamo_gpio_getpin(struct glamo_core *glamo, unsigned int pin) +{ + return readw(REG_OF_GPIO(pin)) & INPUT_BIT(pin) ? 1 : 0; +} +EXPORT_SYMBOL(glamo_gpio_getpin); + +void glamo_gpio_cfgpin(struct glamo_core *glamo, unsigned int pinfunc) +{ + unsigned int reg = REG_OF_GPIO(pinfunc); + u_int16_t tmp; + + spin_lock(&glamo->lock); + tmp = readw(glamo->base + reg); + + if ((pinfunc & 0x00f0) == GLAMO_GPIO_F_FUNC) { + /* pin is a function pin: clear gpio bit */ + tmp &= ~FUNC_BIT(pinfunc); + } else { + /* pin is gpio: set gpio bit */ + tmp |= FUNC_BIT(pinfunc); + + if (pinfunc & GLAMO_GPIO_F_IN) { + /* gpio input: set bit to disable output mode */ + tmp |= GPIO_OUT_BIT(pinfunc); + } else if (pinfunc & GLAMO_GPIO_F_OUT) { + /* gpio output: clear bit to enable output mode */ + tmp &= ~GPIO_OUT_BIT(pinfunc); + } + } + writew(tmp, glamo->base + reg); + spin_unlock(&glamo->lock); +} +EXPORT_SYMBOL(glamo_gpio_cfgpin); + |