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author | wdenk <wdenk> | 2004-10-09 22:21:29 +0000 |
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committer | wdenk <wdenk> | 2004-10-09 22:21:29 +0000 |
commit | 1d9f410500f32b04b18b176386e77afacda7acfb (patch) | |
tree | c381f275ad04efac5da30ec72c14016b09437135 /cpu/arm920t/imx/generic.c | |
parent | 3e01d75ff25b3668191beb86ab32cb2d1fb7f73b (diff) | |
download | bootable_bootloader_goldelico_gta04-1d9f410500f32b04b18b176386e77afacda7acfb.zip bootable_bootloader_goldelico_gta04-1d9f410500f32b04b18b176386e77afacda7acfb.tar.gz bootable_bootloader_goldelico_gta04-1d9f410500f32b04b18b176386e77afacda7acfb.tar.bz2 |
Patch by Steven Scholz, 16 Aug 2004:
- Introducing the concept of SoCs "./cpu/$(CPU)/$(SOC)"
- creating subdirs for SoCs ./cpu/arm920t/imx and ./cpu/arm920t/s3c24x0
- moving SoC specific code out of cpu/arm920t/ into cpu/arm920t/$(SOC)/
- moving drivers/s3c24x0_i2c.c and drivers/serial_imx.c out of drivers/
into cpu/arm920t/$(SOC)/
Diffstat (limited to 'cpu/arm920t/imx/generic.c')
-rw-r--r-- | cpu/arm920t/imx/generic.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/cpu/arm920t/imx/generic.c b/cpu/arm920t/imx/generic.c new file mode 100644 index 0000000..aa7c8c1 --- /dev/null +++ b/cpu/arm920t/imx/generic.c @@ -0,0 +1,90 @@ +/* + * arch/arm/mach-imx/generic.c + * + * author: Sascha Hauer + * Created: april 20th, 2004 + * Copyright: Synertronixx GmbH + * + * Common code for i.MX machines + * + * 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 program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <common.h> + +#ifdef CONFIG_IMX + +#include <asm/arch/imx-regs.h> + +void imx_gpio_mode(int gpio_mode) +{ + unsigned int pin = gpio_mode & GPIO_PIN_MASK; + unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> 5; + unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> 10; + unsigned int tmp; + + /* Pullup enable */ + if(gpio_mode & GPIO_PUEN) + PUEN(port) |= (1<<pin); + else + PUEN(port) &= ~(1<<pin); + + /* Data direction */ + if(gpio_mode & GPIO_OUT) + DDIR(port) |= 1<<pin; + else + DDIR(port) &= ~(1<<pin); + + /* Primary / alternate function */ + if(gpio_mode & GPIO_AF) + GPR(port) |= (1<<pin); + else + GPR(port) &= ~(1<<pin); + + /* use as gpio? */ + if( ocr == 3 ) + GIUS(port) |= (1<<pin); + else + GIUS(port) &= ~(1<<pin); + + /* Output / input configuration */ + /* FIXME: I'm not very sure about OCR and ICONF, someone + * should have a look over it + */ + if(pin<16) { + tmp = OCR1(port); + tmp &= ~( 3<<(pin*2)); + tmp |= (ocr << (pin*2)); + OCR1(port) = tmp; + + if( gpio_mode & GPIO_AOUT ) + ICONFA1(port) &= ~( 3<<(pin*2)); + if( gpio_mode & GPIO_BOUT ) + ICONFB1(port) &= ~( 3<<(pin*2)); + } else { + tmp = OCR2(port); + tmp &= ~( 3<<((pin-16)*2)); + tmp |= (ocr << ((pin-16)*2)); + OCR2(port) = tmp; + + if( gpio_mode & GPIO_AOUT ) + ICONFA2(port) &= ~( 3<<((pin-16)*2)); + if( gpio_mode & GPIO_BOUT ) + ICONFB2(port) &= ~( 3<<((pin-16)*2)); + } +} + +#endif /* CONFIG_IMX */ |