diff options
Diffstat (limited to 'target/linux/rb532/files/arch/mips/rb500')
| -rw-r--r-- | target/linux/rb532/files/arch/mips/rb500/Makefile | 2 | ||||
| -rw-r--r-- | target/linux/rb532/files/arch/mips/rb500/gpio.c | 159 | ||||
| -rw-r--r-- | target/linux/rb532/files/arch/mips/rb500/irq.c | 3 | ||||
| -rw-r--r-- | target/linux/rb532/files/arch/mips/rb500/misc.c | 56 | ||||
| -rw-r--r-- | target/linux/rb532/files/arch/mips/rb500/serial.c | 3 |
5 files changed, 164 insertions, 59 deletions
diff --git a/target/linux/rb532/files/arch/mips/rb500/Makefile b/target/linux/rb532/files/arch/mips/rb500/Makefile index 3a6a2855a..d3ae3d912 100644 --- a/target/linux/rb532/files/arch/mips/rb500/Makefile +++ b/target/linux/rb532/files/arch/mips/rb500/Makefile @@ -2,4 +2,4 @@ # Makefile for the RB500 board specific parts of the kernel # -obj-y += irq.o time.o setup.o serial.o prom.o misc.o devices.o +obj-y += irq.o time.o setup.o serial.o prom.o gpio.o devices.o diff --git a/target/linux/rb532/files/arch/mips/rb500/gpio.c b/target/linux/rb532/files/arch/mips/rb500/gpio.c new file mode 100644 index 000000000..9e19a6336 --- /dev/null +++ b/target/linux/rb532/files/arch/mips/rb500/gpio.c @@ -0,0 +1,159 @@ +/* + * 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 0xb8050000 + +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) +{ + u32 reg; + + reg = readl(&rb500_gpio_reg0->gpiod); + return (reg & (1 << gpio)); +} + +EXPORT_SYMBOL(rb500_gpio_get_value); + +void rb500_gpio_set_value(unsigned gpio, int value) +{ + u32 reg; + + reg = (u32)&rb500_gpio_reg0->gpiod; + + writel(value, (void *)(reg & (1 << gpio))); +} + +EXPORT_SYMBOL(rb500_gpio_set_value); + +int rb500_gpio_direction_input(unsigned gpio) +{ + u32 reg; + + reg = (u32)&rb500_gpio_reg0->gpiocfg; + writel(0, (void *)(reg & (1 << gpio))); + + return 0; +} + +EXPORT_SYMBOL(rb500_gpio_direction_input); + +int rb500_gpio_direction_output(unsigned gpio, int value) +{ + u32 reg; + + reg = (u32)&rb500_gpio_reg0->gpiocfg; + if (value) + writel(1, (void *)(reg & (1 << gpio))); + + return 0; +} + +EXPORT_SYMBOL(rb500_gpio_direction_output); + +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; +} diff --git a/target/linux/rb532/files/arch/mips/rb500/irq.c b/target/linux/rb532/files/arch/mips/rb500/irq.c index 47521c7c5..5a4d349d4 100644 --- a/target/linux/rb532/files/arch/mips/rb500/irq.c +++ b/target/linux/rb532/files/arch/mips/rb500/irq.c @@ -63,6 +63,7 @@ static void rb500_enable_irq(unsigned int irq_nr); static void rb500_disable_irq(unsigned int irq_nr); extern void __init init_generic_irq(void); +extern struct rb500_gpio_reg __iomem *rb500_gpio_reg0; typedef struct { u32 mask; /* mask of valid bits in pending/mask registers */ @@ -205,7 +206,7 @@ static void rb500_end_irq(unsigned int irq_nr) intr_bit = 1 << ip; if (irq_nr >= GROUP4_IRQ_BASE && irq_nr <= (GROUP4_IRQ_BASE + 13)) { - gpio->gpioistat = gpio->gpioistat & ~intr_bit; + rb500_gpio_reg0->gpioistat = rb500_gpio_reg0->gpioistat & ~intr_bit; } enable_local_irq(group_to_ip(group)); diff --git a/target/linux/rb532/files/arch/mips/rb500/misc.c b/target/linux/rb532/files/arch/mips/rb500/misc.c deleted file mode 100644 index 42039b7aa..000000000 --- a/target/linux/rb532/files/arch/mips/rb500/misc.c +++ /dev/null @@ -1,56 +0,0 @@ -#include <linux/module.h> -#include <linux/kernel.h> /* printk() */ -#include <linux/types.h> /* size_t */ -#include <linux/pci.h> -#include <linux/spinlock.h> -#include <asm/rc32434/rb.h> - -#define GPIO_BADDR 0xb8050000 - - -static volatile unsigned char *devCtl3Base = 0; -static unsigned char latchU5State = 0; -static spinlock_t clu5Lock = SPIN_LOCK_UNLOCKED; - -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); -} - -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); -} - -u32 gpio_get(gpio_func func) -{ - return readl((void *) GPIO_BADDR + func); -} - -void gpio_set(gpio_func func, u32 mask, u32 value) -{ - u32 val = readl((void *) GPIO_BADDR + func); - - val &= ~mask; - val |= value & mask; - - writel(val, (void *) GPIO_BADDR + func); -} - -EXPORT_SYMBOL(gpio_set); -EXPORT_SYMBOL(gpio_get); -EXPORT_SYMBOL(set434Reg); -EXPORT_SYMBOL(changeLatchU5); diff --git a/target/linux/rb532/files/arch/mips/rb500/serial.c b/target/linux/rb532/files/arch/mips/rb500/serial.c index 49c5252fe..25a03e010 100644 --- a/target/linux/rb532/files/arch/mips/rb500/serial.c +++ b/target/linux/rb532/files/arch/mips/rb500/serial.c @@ -45,6 +45,7 @@ #include <linux/tty.h> #include <linux/serial.h> #include <linux/serial_core.h> +#include <linux/serial_8250.h> #include <asm/time.h> #include <asm/cpu.h> @@ -59,7 +60,7 @@ static struct uart_port serial_req = { .type = PORT_16550A, .line = 0, .irq = RC32434_UART0_IRQ, - .flags = STD_COM_FLAGS, + //.flags = STD_COM_FLAGS, .iotype = UPIO_MEM, .membase = (char *) KSEG1ADDR(RC32434_UART0_BASE), // .fifosize = 14 |