2 * This program is free software; you can redistribute it and/or modify it
3 * under the terms of the GNU General Public License as published by the
4 * Free Software Foundation; either version 2 of the License, or (at your
5 * option) any later version.
7 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
8 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
10 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
11 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
12 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
13 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
14 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
15 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
16 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <linux/config.h>
23 #include <linux/module.h>
25 #include <au1xxx_gpio.h>
28 #if !defined(CONFIG_SOC_AU1000)
29 static AU1X00_GPIO2 * const gpio2 = (AU1X00_GPIO2 *)GPIO2_BASE;
31 #define GPIO2_OUTPUT_ENABLE_MASK 0x00010000
33 int au1xxx_gpio2_read(int signal)
36 /* gpio2->dir &= ~(0x01 << signal); //Set GPIO to input */
37 return ((gpio2->pinstate >> signal) & 0x01);
40 void au1xxx_gpio2_write(int signal, int value)
44 gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << signal) |
48 void au1xxx_gpio2_tristate(int signal)
51 gpio2->dir &= ~(0x01 << signal); /* Set GPIO to input */
55 int au1xxx_gpio1_read(int signal)
57 /* gpio1->trioutclr |= (0x01 << signal); */
58 return ((gpio1->pinstaterd >> signal) & 0x01);
61 void au1xxx_gpio1_write(int signal, int value)
64 gpio1->outputset = (0x01 << signal);
66 gpio1->outputclr = (0x01 << signal); /* Output a Zero */
69 void au1xxx_gpio1_tristate(int signal)
71 gpio1->trioutclr = (0x01 << signal); /* Tristate signal */
75 int au1xxx_gpio_read(int signal)
78 #if defined(CONFIG_SOC_AU1000)
81 return au1xxx_gpio2_read(signal);
84 return au1xxx_gpio1_read(signal);
87 void au1xxx_gpio_write(int signal, int value)
90 #if defined(CONFIG_SOC_AU1000)
93 au1xxx_gpio2_write(signal, value);
96 au1xxx_gpio1_write(signal, value);
99 void au1xxx_gpio_tristate(int signal)
102 #if defined(CONFIG_SOC_AU1000)
105 au1xxx_gpio2_tristate(signal);
108 au1xxx_gpio1_tristate(signal);
111 void au1xxx_gpio1_set_inputs(void)
113 gpio1->pininputen = 0;
116 EXPORT_SYMBOL(au1xxx_gpio1_set_inputs);
117 EXPORT_SYMBOL(au1xxx_gpio_tristate);
118 EXPORT_SYMBOL(au1xxx_gpio_write);
119 EXPORT_SYMBOL(au1xxx_gpio_read);