diff options
Diffstat (limited to 'target/linux/rb532/files/arch/mips/rb500/gpio.c')
| -rw-r--r-- | target/linux/rb532/files/arch/mips/rb500/gpio.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/target/linux/rb532/files/arch/mips/rb500/gpio.c b/target/linux/rb532/files/arch/mips/rb500/gpio.c deleted file mode 100644 index 6c92a8fe56..0000000000 --- a/target/linux/rb532/files/arch/mips/rb500/gpio.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - * Miscellaneous functions for IDT EB434 board - * - * Copyright 2004 IDT Inc. (rischelp@idt.com) - * Copyright 2006 Phil Sutter <n0-1@freewrt.org> - * Copyright 2007 Florian Fainelli <florian@openwrt.org> - * - * 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/kernel.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/spinlock.h> -#include <linux/io.h> -#include <linux/platform_device.h> - -#include <asm/addrspace.h> -#include <asm/gpio.h> - -#include <asm/rc32434/rb.h> - -#define GPIO_BADDR 0x18050000 - -static volatile unsigned char *devCtl3Base; -static unsigned char latchU5State; -static spinlock_t clu5Lock = SPIN_LOCK_UNLOCKED; - -struct rb500_gpio_reg __iomem *rb500_gpio_reg0; -EXPORT_SYMBOL(rb500_gpio_reg0); - -static struct resource rb500_gpio_reg0_res[] = { - { - .name = "gpio_reg0", - .start = GPIO_BADDR, - .end = GPIO_BADDR + sizeof(struct rb500_gpio_reg), - .flags = IORESOURCE_MEM, - } -}; - -void set434Reg(unsigned regOffs, unsigned bit, unsigned len, unsigned val) -{ - unsigned flags, data; - unsigned i = 0; - - spin_lock_irqsave(&clu5Lock, flags); - data = *(volatile unsigned *) (IDT434_REG_BASE + regOffs); - for (i = 0; i != len; ++i) { - if (val & (1 << i)) - data |= (1 << (i + bit)); - else - data &= ~(1 << (i + bit)); - } - *(volatile unsigned *) (IDT434_REG_BASE + regOffs) = data; - spin_unlock_irqrestore(&clu5Lock, flags); -} -EXPORT_SYMBOL(set434Reg); - -void changeLatchU5(unsigned char orMask, unsigned char nandMask) -{ - unsigned flags; - - spin_lock_irqsave(&clu5Lock, flags); - latchU5State = (latchU5State | orMask) & ~nandMask; - if (!devCtl3Base) - devCtl3Base = (volatile unsigned char *) - KSEG1ADDR(*(volatile unsigned *) - KSEG1ADDR(0x18010030)); - *devCtl3Base = latchU5State; - spin_unlock_irqrestore(&clu5Lock, flags); -} -EXPORT_SYMBOL(changeLatchU5); - -unsigned char getLatchU5State(void) -{ - return latchU5State; -} -EXPORT_SYMBOL(getLatchU5State); - -int rb500_gpio_get_value(unsigned gpio) -{ - return readl(&rb500_gpio_reg0->gpiod) & (1 << gpio); -} -EXPORT_SYMBOL(rb500_gpio_get_value); - -void rb500_gpio_set_value(unsigned gpio, int value) -{ - unsigned tmp; - - tmp = readl(&rb500_gpio_reg0->gpiod) & ~(1 << gpio); - if (value) - tmp |= 1 << gpio; - - writel(tmp, (void *)&rb500_gpio_reg0->gpiod); -} -EXPORT_SYMBOL(rb500_gpio_set_value); - -int rb500_gpio_direction_input(unsigned gpio) -{ - writel(readl(&rb500_gpio_reg0->gpiocfg) & ~(1 << gpio), (void *)&rb500_gpio_reg0->gpiocfg); - - return 0; -} -EXPORT_SYMBOL(rb500_gpio_direction_input); - -int rb500_gpio_direction_output(unsigned gpio, int value) -{ - gpio_set_value(gpio, value); - writel(readl(&rb500_gpio_reg0->gpiocfg) | (1 << gpio), (void *)&rb500_gpio_reg0->gpiocfg); - - return 0; -} -EXPORT_SYMBOL(rb500_gpio_direction_output); - -void rb500_gpio_set_int_level(unsigned gpio, int value) -{ - unsigned tmp; - - tmp = readl(&rb500_gpio_reg0->gpioilevel) & ~(1 << gpio); - if (value) - tmp |= 1 << gpio; - writel(tmp, (void *)&rb500_gpio_reg0->gpioilevel); -} -EXPORT_SYMBOL(rb500_gpio_set_int_level); - -int rb500_gpio_get_int_level(unsigned gpio) -{ - return readl(&rb500_gpio_reg0->gpioilevel) & (1 << gpio); -} -EXPORT_SYMBOL(rb500_gpio_get_int_level); - -void rb500_gpio_set_int_status(unsigned gpio, int value) -{ - unsigned tmp; - - tmp = readl(&rb500_gpio_reg0->gpioistat); - if (value) - tmp |= 1 << gpio; - writel(tmp, (void *)&rb500_gpio_reg0->gpioistat); -} -EXPORT_SYMBOL(rb500_gpio_set_int_status); - -int rb500_gpio_get_int_status(unsigned gpio) -{ - return readl(&rb500_gpio_reg0->gpioistat) & (1 << gpio); -} -EXPORT_SYMBOL(rb500_gpio_get_int_status); - -void rb500_gpio_set_func(unsigned gpio, int value) -{ - unsigned tmp; - - tmp = readl(&rb500_gpio_reg0->gpiofunc); - if (value) - tmp |= 1 << gpio; - writel(tmp, (void *)&rb500_gpio_reg0->gpiofunc); -} -EXPORT_SYMBOL(rb500_gpio_set_func); - -int rb500_gpio_get_func(unsigned gpio) -{ - return readl(&rb500_gpio_reg0->gpiofunc) & (1 << gpio); -} -EXPORT_SYMBOL(rb500_gpio_get_func); - -int __init rb500_gpio_init(void) -{ - rb500_gpio_reg0 = ioremap_nocache(rb500_gpio_reg0_res[0].start, - rb500_gpio_reg0_res[0].end - - rb500_gpio_reg0_res[0].start); - - if (!rb500_gpio_reg0) { - printk(KERN_ERR "rb500: cannot remap GPIO register 0\n"); - return -ENXIO; - } - - return 0; -} -arch_initcall(rb500_gpio_init); |