1 files changed, 133 insertions, 0 deletions

diff --git a/arch/mips/alchemy/common/gpiolib.c b/arch/mips/alchemy/common/gpiolib.c
new file mode 100644
index 000000000000..91fb4d9e30fd
--- /dev/null
+++ b/arch/mips/alchemy/common/gpiolib.c
@@ -0,0 +1,133 @@
+/*
+ *  Copyright (C) 2007-2009, OpenWrt.org, Florian Fainelli <florian@openwrt.org>
+ *      GPIOLIB support for Alchemy chips.
+ *
+ *  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 :
+ *      This file must ONLY be built when CONFIG_GPIOLIB=y and
+ *       CONFIG_ALCHEMY_GPIO_INDIRECT=n, otherwise compilation will fail!
+ *      au1000 SoC have only one GPIO block : GPIO1
+ *      Au1100, Au15x0, Au12x0 have a second one : GPIO2
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/gpio.h>
+#include <asm/mach-au1x00/gpio-au1000.h>
+
+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);
+}
+
+
+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,
+        },
+        [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,
+        },
+};
+
+static int __init alchemy_gpiochip_init(void)
+{
+        int ret = 0;
+
+        switch (alchemy_get_cputype()) {
+        case ALCHEMY_CPU_AU1000:
+                ret = gpiochip_add(&alchemy_gpio_chip[0]);
+                break;
+        case ALCHEMY_CPU_AU1500...ALCHEMY_CPU_AU1200:
+                ret = gpiochip_add(&alchemy_gpio_chip[0]);
+                ret |= gpiochip_add(&alchemy_gpio_chip[1]);
+                break;
+        }
+        return ret;
+}
+arch_initcall(alchemy_gpiochip_init);