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author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-02-23 10:27:15 +0100 |
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committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-02-23 10:27:15 +0100 |
commit | ea393eb1d6a786fc2e895f90abb5f7e7541aef45 (patch) | |
tree | f8e264ecda76805863f9336d8c3712767984f373 /cpu/at32ap/portmux-pio.c | |
parent | 32688e572ff96715b41420e9a7f280db6c399b65 (diff) | |
parent | cb5473205206c7f14cbb1e747f28ec75b48826e2 (diff) | |
download | u-boot-imx-ea393eb1d6a786fc2e895f90abb5f7e7541aef45.zip u-boot-imx-ea393eb1d6a786fc2e895f90abb5f7e7541aef45.tar.gz u-boot-imx-ea393eb1d6a786fc2e895f90abb5f7e7541aef45.tar.bz2 |
Merge branch 'cleanups' into next
Diffstat (limited to 'cpu/at32ap/portmux-pio.c')
-rw-r--r-- | cpu/at32ap/portmux-pio.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/cpu/at32ap/portmux-pio.c b/cpu/at32ap/portmux-pio.c new file mode 100644 index 0000000..a29f94e --- /dev/null +++ b/cpu/at32ap/portmux-pio.c @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2006, 2008 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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> + +#include <asm/io.h> +#include <asm/arch/memory-map.h> +#include <asm/arch/gpio.h> + +void portmux_select_peripheral(void *port, unsigned long pin_mask, + enum portmux_function func, unsigned long flags) +{ + if (flags & PORTMUX_PULL_UP) + pio_writel(port, PUER, pin_mask); + else + pio_writel(port, PUDR, pin_mask); + + switch (func) { + case PORTMUX_FUNC_A: + pio_writel(port, ASR, pin_mask); + break; + case PORTMUX_FUNC_B: + pio_writel(port, BSR, pin_mask); + break; + } + + pio_writel(port, PDR, pin_mask); +} + +void portmux_select_gpio(void *port, unsigned long pin_mask, + unsigned long flags) +{ + if (flags & PORTMUX_PULL_UP) + pio_writel(port, PUER, pin_mask); + else + pio_writel(port, PUDR, pin_mask); + + if (flags & PORTMUX_OPEN_DRAIN) + pio_writel(port, MDER, pin_mask); + else + pio_writel(port, MDDR, pin_mask); + + if (flags & PORTMUX_DIR_OUTPUT) { + if (flags & PORTMUX_INIT_HIGH) + pio_writel(port, SODR, pin_mask); + else + pio_writel(port, CODR, pin_mask); + pio_writel(port, OER, pin_mask); + } else { + pio_writel(port, ODR, pin_mask); + } + + pio_writel(port, PER, pin_mask); +} + +void pio_set_output_value(unsigned int pin, int value) +{ + void *port = pio_pin_to_port(pin); + + if (!port) + panic("Invalid GPIO pin %u\n", pin); + + __pio_set_output_value(port, pin & 0x1f, value); +} + +int pio_get_input_value(unsigned int pin) +{ + void *port = pio_pin_to_port(pin); + + if (!port) + panic("Invalid GPIO pin %u\n", pin); + + return __pio_get_input_value(port, pin & 0x1f); +} |