arch/arm/mach-sa1100/collie.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/collie.c
   3  *
   4  * May be copied or modified under the terms of the GNU General Public
   5  * License.  See linux/COPYING for more information.
   6  *
   7  * This file contains all Collie-specific tweaks.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * ChangeLog:
  14  *  03-06-2004 John Lenz <jelenz@wisc.edu>
  15  *  06-04-2002 Chris Larson <kergoth@digitalnemesis.net>
  16  *  04-16-2001 Lineo Japan,Inc. ...
  17  */
  18
  19 #include <linux/config.h>
  20 #include <linux/init.h>
  21 #include <linux/kernel.h>
  22 #include <linux/tty.h>
  23 #include <linux/delay.h>
  24 #include <linux/device.h>
  25 #include <linux/timer.h>
  26
  27 #include <asm/hardware.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/irq.h>
  30 #include <asm/setup.h>
  31 #include <asm/arch/collie.h>
  32
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/map.h>
  35 #include <asm/mach/serial_sa1100.h>
  36
  37 #include <asm/hardware/locomo.h>
  38
  39 #include "generic.h"
  40
  41 static void __init scoop_init(void)
  42 {
  43
  44 #define COLLIE_SCP_INIT_DATA(adr,dat)   (((adr)<<16)|(dat))
  45 #define COLLIE_SCP_INIT_DATA_END        ((unsigned long)-1)
  46         static const unsigned long scp_init[] = {
  47                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_MCR, 0x0140),   // 00
  48                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_MCR, 0x0100),
  49                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_CDR, 0x0000),   // 04
  50                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_CPR, 0x0000),   // 0C
  51                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_CCR, 0x0000),   // 10
  52                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_IMR, 0x0000),   // 18
  53                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_IRM, 0x00FF),   // 14
  54                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_ISR, 0x0000),   // 1C
  55                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_IRM, 0x0000),
  56                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_GPCR, COLLIE_SCP_IO_DIR),       // 20
  57                 COLLIE_SCP_INIT_DATA(COLLIE_SCP_GPWR, COLLIE_SCP_IO_OUT),       // 24
  58                 COLLIE_SCP_INIT_DATA_END
  59         };
  60         int i;
  61         for (i = 0; scp_init[i] != COLLIE_SCP_INIT_DATA_END; i++) {
  62                 int adr = scp_init[i] >> 16;
  63                 COLLIE_SCP_REG(adr) = scp_init[i] & 0xFFFF;
  64         }
  65
  66 }
  67
  68 static struct resource locomo_resources[] = {
  69         [0] = {
  70                 .start          = 0x40000000,
  71                 .end            = 0x40001fff,
  72                 .flags          = IORESOURCE_MEM,
  73         },
  74         [1] = {
  75                 .start          = IRQ_GPIO25,
  76                 .end            = IRQ_GPIO25,
  77                 .flags          = IORESOURCE_IRQ,
  78         },
  79 };
  80
  81 static struct platform_device locomo_device = {
  82         .name           = "locomo",
  83         .id             = 0,
  84         .num_resources  = ARRAY_SIZE(locomo_resources),
  85         .resource       = locomo_resources,
  86 };
  87
  88 static struct platform_device *devices[] __initdata = {
  89         &locomo_device,
  90 };
  91
  92 static void __init collie_init(void)
  93 {
  94         int ret = 0;
  95
  96         /* cpu initialize */
  97         GAFR = ( GPIO_SSP_TXD | \
  98                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | GPIO_TIC_ACK | \
  99                  GPIO_32_768kHz );
 100
 101         GPDR = ( GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | \
 102                  GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | \
 103                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | \
 104                  GPIO_SDLC_AAF | GPIO_UART_SCLK1 | GPIO_32_768kHz );
 105         GPLR = GPIO_GPIO18;
 106
 107         // PPC pin setting
 108         PPDR = ( PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | \
 109                  PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | \
 110                  PPC_TXD1 | PPC_TXD2 | PPC_RXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM );
 111
 112         PSDR = ( PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4 );
 113
 114         GAFR |= GPIO_32_768kHz;
 115         GPDR |= GPIO_32_768kHz;
 116         TUCR  = TUCR_32_768kHz;
 117
 118         scoop_init();
 119
 120         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 121         if (ret) {
 122                 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
 123         }
 124 }
 125
 126 static struct map_desc collie_io_desc[] __initdata = {
 127         /* virtual     physical    length      type */
 128         {0xe8000000, 0x00000000, 0x02000000, MT_DEVICE},        /* 32M main flash (cs0) */
 129         {0xea000000, 0x08000000, 0x02000000, MT_DEVICE},        /* 32M boot flash (cs1) */
 130         {0xf0000000, 0x40000000, 0x01000000, MT_DEVICE},        /* 16M LOCOMO  & SCOOP (cs4) */
 131 };
 132
 133 static void __init collie_map_io(void)
 134 {
 135         sa1100_map_io();
 136         iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
 137 }
 138
 139 MACHINE_START(COLLIE, "Sharp-Collie")
 140         BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
 141         MAPIO(collie_map_io)
 142         INITIRQ(sa1100_init_irq)
 143         INIT_MACHINE(collie_init)
 144         INITTIME(sa1100_init_time)
 145 MACHINE_END