131 lines
4.1 KiB
C
131 lines
4.1 KiB
C
/*
|
|
* Copyright (C) 2007-2009, OpenWrt.org, Florian Fainelli <florian@openwrt.org>
|
|
* GPIOLIB support for Au1000, Au1500, Au1100, Au1550 and Au12x0.
|
|
*
|
|
* 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.
|
|
*
|
|
* Notes :
|
|
* au1000 SoC have only one GPIO block : GPIO1
|
|
* Au1100, Au15x0, Au12x0 have a second one : GPIO2
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio.h>
|
|
|
|
#include <asm/mach-au1x00/au1000.h>
|
|
#include <asm/mach-au1x00/gpio.h>
|
|
|
|
#if !defined(CONFIG_SOC_AU1000)
|
|
static int gpio2_get(struct gpio_chip *chip, unsigned offset)
|
|
{
|
|
return alchemy_gpio2_get_value(offset + ALCHEMY_GPIO2_BASE);
|
|
}
|
|
|
|
static void gpio2_set(struct gpio_chip *chip, unsigned offset, int value)
|
|
{
|
|
alchemy_gpio2_set_value(offset + ALCHEMY_GPIO2_BASE, value);
|
|
}
|
|
|
|
static int gpio2_direction_input(struct gpio_chip *chip, unsigned offset)
|
|
{
|
|
return alchemy_gpio2_direction_input(offset + ALCHEMY_GPIO2_BASE);
|
|
}
|
|
|
|
static int gpio2_direction_output(struct gpio_chip *chip, unsigned offset,
|
|
int value)
|
|
{
|
|
return alchemy_gpio2_direction_output(offset + ALCHEMY_GPIO2_BASE,
|
|
value);
|
|
}
|
|
|
|
static int gpio2_to_irq(struct gpio_chip *chip, unsigned offset)
|
|
{
|
|
return alchemy_gpio2_to_irq(offset + ALCHEMY_GPIO2_BASE);
|
|
}
|
|
#endif /* !defined(CONFIG_SOC_AU1000) */
|
|
|
|
static int gpio1_get(struct gpio_chip *chip, unsigned offset)
|
|
{
|
|
return alchemy_gpio1_get_value(offset + ALCHEMY_GPIO1_BASE);
|
|
}
|
|
|
|
static void gpio1_set(struct gpio_chip *chip,
|
|
unsigned offset, int value)
|
|
{
|
|
alchemy_gpio1_set_value(offset + ALCHEMY_GPIO1_BASE, value);
|
|
}
|
|
|
|
static int gpio1_direction_input(struct gpio_chip *chip, unsigned offset)
|
|
{
|
|
return alchemy_gpio1_direction_input(offset + ALCHEMY_GPIO1_BASE);
|
|
}
|
|
|
|
static int gpio1_direction_output(struct gpio_chip *chip,
|
|
unsigned offset, int value)
|
|
{
|
|
return alchemy_gpio1_direction_output(offset + ALCHEMY_GPIO1_BASE,
|
|
value);
|
|
}
|
|
|
|
static int gpio1_to_irq(struct gpio_chip *chip, unsigned offset)
|
|
{
|
|
return alchemy_gpio1_to_irq(offset + ALCHEMY_GPIO1_BASE);
|
|
}
|
|
|
|
struct gpio_chip alchemy_gpio_chip[] = {
|
|
[0] = {
|
|
.label = "alchemy-gpio1",
|
|
.direction_input = gpio1_direction_input,
|
|
.direction_output = gpio1_direction_output,
|
|
.get = gpio1_get,
|
|
.set = gpio1_set,
|
|
.to_irq = gpio1_to_irq,
|
|
.base = ALCHEMY_GPIO1_BASE,
|
|
.ngpio = ALCHEMY_GPIO1_NUM,
|
|
},
|
|
#if !defined(CONFIG_SOC_AU1000)
|
|
[1] = {
|
|
.label = "alchemy-gpio2",
|
|
.direction_input = gpio2_direction_input,
|
|
.direction_output = gpio2_direction_output,
|
|
.get = gpio2_get,
|
|
.set = gpio2_set,
|
|
.to_irq = gpio2_to_irq,
|
|
.base = ALCHEMY_GPIO2_BASE,
|
|
.ngpio = ALCHEMY_GPIO2_NUM,
|
|
},
|
|
#endif
|
|
};
|
|
|
|
static int __init alchemy_gpiolib_init(void)
|
|
{
|
|
gpiochip_add(&alchemy_gpio_chip[0]);
|
|
#if !defined(CONFIG_SOC_AU1000)
|
|
gpiochip_add(&alchemy_gpio_chip[1]);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
arch_initcall(alchemy_gpiolib_init);
|