Commit 2cce8263 authored by Pete Popov's avatar Pete Popov Committed by Ralf Baechle

Kernel gpio/2 routines that will be used by some drivers.

Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 13bb199f
......@@ -8,7 +8,7 @@
obj-y += prom.o int-handler.o irq.o puts.o time.o reset.o \
au1xxx_irqmap.o clocks.o platform.o power.o setup.o \
sleeper.o cputable.o dma.o dbdma.o
sleeper.o cputable.o dma.o dbdma.o gpio.o
obj-$(CONFIG_AU1X00_USB_DEVICE) += usbdev.o
obj-$(CONFIG_KGDB) += dbg_io.o
......
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <au1000.h>
#include <au1xxx_gpio.h>
#define gpio1 sys
#if !defined(CONFIG_SOC_AU1000)
static AU1X00_GPIO2 * const gpio2 = (AU1X00_GPIO2 *)GPIO2_BASE;
#define GPIO2_OUTPUT_ENABLE_MASK 0x00010000
int au1xxx_gpio2_read(int signal)
{
signal -= 200;
/* gpio2->dir &= ~(0x01 << signal); //Set GPIO to input */
return ((gpio2->pinstate >> signal) & 0x01);
}
void au1xxx_gpio2_write(int signal, int value)
{
signal -= 200;
gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << signal) |
(value << signal);
}
void au1xxx_gpio2_tristate(int signal)
{
signal -= 200;
gpio2->dir &= ~(0x01 << signal); /* Set GPIO to input */
}
#endif
int au1xxx_gpio1_read(int signal)
{
/* gpio1->trioutclr |= (0x01 << signal); */
return ((gpio1->pinstaterd >> signal) & 0x01);
}
void au1xxx_gpio1_write(int signal, int value)
{
if(value)
gpio1->outputset = (0x01 << signal);
else
gpio1->outputclr = (0x01 << signal); /* Output a Zero */
}
void au1xxx_gpio1_tristate(int signal)
{
gpio1->trioutclr = (0x01 << signal); /* Tristate signal */
}
int au1xxx_gpio_read(int signal)
{
if(signal >= 200)
#if defined(CONFIG_SOC_AU1000)
return 0;
#else
return au1xxx_gpio2_read(signal);
#endif
else
return au1xxx_gpio1_read(signal);
}
void au1xxx_gpio_write(int signal, int value)
{
if(signal >= 200)
#if defined(CONFIG_SOC_AU1000)
;
#else
au1xxx_gpio2_write(signal, value);
#endif
else
au1xxx_gpio1_write(signal, value);
}
void au1xxx_gpio_tristate(int signal)
{
if(signal >= 200)
#if defined(CONFIG_SOC_AU1000)
;
#else
au1xxx_gpio2_tristate(signal);
#endif
else
au1xxx_gpio1_tristate(signal);
}
void au1xxx_gpio1_set_inputs(void)
{
gpio1->pininputen = 0;
}
EXPORT_SYMBOL(au1xxx_gpio1_set_inputs);
EXPORT_SYMBOL(au1xxx_gpio_tristate);
EXPORT_SYMBOL(au1xxx_gpio_write);
EXPORT_SYMBOL(au1xxx_gpio_read);
#ifndef __AU1XXX_GPIO_H
#define __AU1XXX_GPIO_H
void au1xxx_gpio1_set_inputs(void);
void au1xxx_gpio_tristate(int signal);
void au1xxx_gpio_write(int signal, int value);
int au1xxx_gpio_read(int signal);
typedef volatile struct
{
u32 dir;
u32 reserved;
u32 output;
u32 pinstate;
u32 inten;
u32 enable;
} AU1X00_GPIO2;
#endif //__AU1XXX_GPIO_H
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