From 2cce8263228ac8926d675cfa19e50ca0af9e05e4 Mon Sep 17 00:00:00 2001
From: Pete Popov <ppopov@embeddedalley.com>
Date: Sun, 18 Sep 2005 11:18:10 +0000
Subject: [PATCH] Kernel gpio/2 routines that will be used by some drivers.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
arch/mips/au1000/common/Makefile | 2 +-
arch/mips/au1000/common/gpio.c | 119 +++++++++++++++++++++
include/asm-mips/mach-au1x00/au1xxx_gpio.h | 20 ++++
3 files changed, 140 insertions(+), 1 deletion(-)
create mode 100644 arch/mips/au1000/common/gpio.c
create mode 100644 include/asm-mips/mach-au1x00/au1xxx_gpio.h
diff --git a/arch/mips/au1000/common/Makefile b/arch/mips/au1000/common/Makefile
index 594b75e5e0800..a1edfd1f643c4 100644
--- a/arch/mips/au1000/common/Makefile
+++ b/arch/mips/au1000/common/Makefile
@@ -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
diff --git a/arch/mips/au1000/common/gpio.c b/arch/mips/au1000/common/gpio.c
new file mode 100644
index 0000000000000..5f5915b831421
--- /dev/null
+++ b/arch/mips/au1000/common/gpio.c
@@ -0,0 +1,119 @@
+/*
+ * 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);
diff --git a/include/asm-mips/mach-au1x00/au1xxx_gpio.h b/include/asm-mips/mach-au1x00/au1xxx_gpio.h
new file mode 100644
index 0000000000000..27911e054ffca
--- /dev/null
+++ b/include/asm-mips/mach-au1x00/au1xxx_gpio.h
@@ -0,0 +1,20 @@
+#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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