From 2cce8263228ac8926d675cfa19e50ca0af9e05e4 Mon Sep 17 00:00:00 2001 From: Pete Popov 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 --- 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 594b75e5e080..a1edfd1f643c 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 000000000000..5f5915b83142 --- /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 +#include +#include +#include + +#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 000000000000..27911e054ffc --- /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 -- 2.20.1