Merge remote-tracking branch 's5p/for-next'
[linux-2.6/next.git] / arch / mips / alchemy / xxs1500 / board_setup.c
blob81e57fad07ab4bd5567bec068d70c0b18955b0fb
1 /*
2 * Copyright 2000-2003, 2008 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc. <source@mvista.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
11 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
13 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
14 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
15 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
16 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
17 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
18 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
19 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
21 * You should have received a copy of the GNU General Public License along
22 * with this program; if not, write to the Free Software Foundation, Inc.,
23 * 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/gpio.h>
27 #include <linux/init.h>
28 #include <linux/interrupt.h>
29 #include <linux/delay.h>
30 #include <linux/pm.h>
32 #include <asm/reboot.h>
33 #include <asm/mach-au1x00/au1000.h>
35 #include <prom.h>
37 static void xxs1500_reset(char *c)
39 /* Jump to the reset vector */
40 __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
43 static void xxs1500_power_off(void)
45 while (1)
46 asm volatile (
47 " .set mips32 \n"
48 " wait \n"
49 " .set mips0 \n");
52 void __init board_setup(void)
54 u32 pin_func;
56 pm_power_off = xxs1500_power_off;
57 _machine_halt = xxs1500_power_off;
58 _machine_restart = xxs1500_reset;
60 alchemy_gpio1_input_enable();
61 alchemy_gpio2_enable();
63 /* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */
64 pin_func = au_readl(SYS_PINFUNC) & ~SYS_PF_UR3;
65 pin_func |= SYS_PF_UR3;
66 au_writel(pin_func, SYS_PINFUNC);
68 /* Enable UART */
69 alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
70 /* Enable DTR (MCR bit 0) = USB power up */
71 __raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18));
72 wmb();
74 #ifdef CONFIG_PCI
75 #if defined(__MIPSEB__)
76 au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG);
77 #else
78 au_writel(0xf, Au1500_PCI_CFG);
79 #endif
80 #endif
83 static int __init xxs1500_init_irq(void)
85 irq_set_irq_type(AU1500_GPIO204_INT, IRQF_TRIGGER_HIGH);
86 irq_set_irq_type(AU1500_GPIO201_INT, IRQF_TRIGGER_LOW);
87 irq_set_irq_type(AU1500_GPIO202_INT, IRQF_TRIGGER_LOW);
88 irq_set_irq_type(AU1500_GPIO203_INT, IRQF_TRIGGER_LOW);
89 irq_set_irq_type(AU1500_GPIO205_INT, IRQF_TRIGGER_LOW);
90 irq_set_irq_type(AU1500_GPIO207_INT, IRQF_TRIGGER_LOW);
92 irq_set_irq_type(AU1500_GPIO0_INT, IRQF_TRIGGER_LOW);
93 irq_set_irq_type(AU1500_GPIO1_INT, IRQF_TRIGGER_LOW);
94 irq_set_irq_type(AU1500_GPIO2_INT, IRQF_TRIGGER_LOW);
95 irq_set_irq_type(AU1500_GPIO3_INT, IRQF_TRIGGER_LOW);
96 irq_set_irq_type(AU1500_GPIO4_INT, IRQF_TRIGGER_LOW); /* CF irq */
97 irq_set_irq_type(AU1500_GPIO5_INT, IRQF_TRIGGER_LOW);
99 return 0;
101 arch_initcall(xxs1500_init_irq);