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[ramips] add GPIO configuration feature

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17512 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg
2009-09-04 15:08:26 +00:00
parent 3ff4f7ce16
commit 2f3b768d56
11 changed files with 197 additions and 4 deletions
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35
target/linux/ramips/files/arch/mips/ralink/rt288x/rt288x.c
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@@ -1,7 +1,7 @@
/*
* Ralink RT288x SoC specific setup
*
* Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Ralink's 2.6.21 BSP
@@ -14,6 +14,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <asm/mach-ralink/common.h>
#include <asm/mach-ralink/rt288x.h>
@@ -73,3 +74,35 @@ void __init rt288x_detect_sys_freq(void)
rt288x_sys_freq = rt288x_cpu_freq / 2;
}
static void rt288x_gpio_reserve(int first, int last)
{
for (; first <= last; first++)
gpio_request(first, "reserved");
}
void __init rt288x_gpio_init(u32 mode)
{
rt288x_sysc_wr(mode, SYSC_REG_GPIO_MODE);
ramips_gpio_init();
if ((mode & RT2880_GPIO_MODE_I2C) == 0)
rt288x_gpio_reserve(1, 2);
if ((mode & RT2880_GPIO_MODE_SPI) == 0)
rt288x_gpio_reserve(3, 6);
if ((mode & RT2880_GPIO_MODE_UART0) == 0)
rt288x_gpio_reserve(7, 14);
if ((mode & RT2880_GPIO_MODE_JTAG) == 0)
rt288x_gpio_reserve(17, 21);
if ((mode & RT2880_GPIO_MODE_MDIO) == 0)
rt288x_gpio_reserve(22, 23);
if ((mode & RT2880_GPIO_MODE_SDRAM) == 0)
rt288x_gpio_reserve(24, 39);
if ((mode & RT2880_GPIO_MODE_PCI) == 0)
rt288x_gpio_reserve(40, 71);
}