release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/alchemy/devboards/pb1550/board_setup.c

   1 /*
   2  *
   3  * BRIEF MODULE DESCRIPTION
   4  *      Alchemy Pb1550 board setup.
   5  *
   6  * Copyright 2000, 2008 MontaVista Software Inc.
   7  * Author: MontaVista Software, Inc. <source@mvista.com>
   8  *
   9  *  This program is free software; you can redistribute  it and/or modify it
  10  *  under  the terms of  the GNU General  Public License as published by the
  11  *  Free Software Foundation;  either version 2 of the  License, or (at your
  12  *  option) any later version.
  13  *
  14  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  15  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  16  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  17  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  18  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  20  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  21  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  22  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  *  You should have received a copy of the  GNU General Public License along
  26  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  27  *  675 Mass Ave, Cambridge, MA 02139, USA.
  28  */
  29
  30 #include <linux/init.h>
  31 #include <linux/interrupt.h>
  32
  33 #include <asm/mach-au1x00/au1000.h>
  34 #include <asm/mach-pb1x00/pb1550.h>
  35 #include <asm/mach-db1x00/bcsr.h>
  36 #include <asm/mach-au1x00/gpio.h>
  37
  38 #include <prom.h>
  39
  40
  41 char irq_tab_alchemy[][5] __initdata = {
  42         [12] = { -1, AU1550_PCI_INTB, AU1550_PCI_INTC, AU1550_PCI_INTD, AU1550_PCI_INTA }, /* IDSEL 12 - PCI slot 2 (left)  */
  43         [13] = { -1, AU1550_PCI_INTA, AU1550_PCI_INTB, AU1550_PCI_INTC, AU1550_PCI_INTD }, /* IDSEL 13 - PCI slot 1 (right) */
  44 };
  45
  46 const char *get_system_type(void)
  47 {
  48         return "Alchemy Pb1550";
  49 }
  50
  51 void __init board_setup(void)
  52 {
  53         u32 pin_func;
  54
  55         bcsr_init(PB1550_BCSR_PHYS_ADDR,
  56                   PB1550_BCSR_PHYS_ADDR + PB1550_BCSR_HEXLED_OFS);
  57
  58         alchemy_gpio2_enable();
  59
  60         /*
  61          * Enable PSC1 SYNC for AC'97.  Normaly done in audio driver,
  62          * but it is board specific code, so put it here.
  63          */
  64         pin_func = au_readl(SYS_PINFUNC);
  65         au_sync();
  66         pin_func |= SYS_PF_MUST_BE_SET | SYS_PF_PSC1_S1;
  67         au_writel(pin_func, SYS_PINFUNC);
  68
  69         bcsr_write(BCSR_PCMCIA, 0);     /* turn off PCMCIA power */
  70
  71         printk(KERN_INFO "AMD Alchemy Pb1550 Board\n");
  72 }
  73
  74 static int __init pb1550_init_irq(void)
  75 {
  76         set_irq_type(AU1550_GPIO0_INT, IRQF_TRIGGER_LOW);
  77         set_irq_type(AU1550_GPIO1_INT, IRQF_TRIGGER_LOW);
  78         set_irq_type(AU1550_GPIO201_205_INT, IRQF_TRIGGER_HIGH);
  79
  80         /* enable both PCMCIA card irqs in the shared line */
  81         alchemy_gpio2_enable_int(201);
  82         alchemy_gpio2_enable_int(202);
  83
  84         return 0;
  85 }
  86 arch_initcall(pb1550_init_irq);