arch/arm/mach-iop32x/em7210.c

   1 /*
   2  * arch/arm/mach-iop32x/em7210.c
   3  *
   4  * Board support code for the Lanner EM7210 platforms.
   5  *
   6  * Based on arch/arm/mach-iop32x/iq31244.c file.
   7  *
   8  * Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  *
  14  */
  15
  16 #include <linux/mm.h>
  17 #include <linux/init.h>
  18 #include <linux/kernel.h>
  19 #include <linux/pci.h>
  20 #include <linux/pm.h>
  21 #include <linux/serial_core.h>
  22 #include <linux/serial_8250.h>
  23 #include <linux/mtd/physmap.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/i2c.h>
  26 #include <asm/hardware.h>
  27 #include <linux/io.h>
  28 #include <linux/irq.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31 #include <asm/mach/pci.h>
  32 #include <asm/mach/time.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/arch/time.h>
  35
  36 static void __init em7210_timer_init(void)
  37 {
  38         /* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */
  39         /* 33.333 MHz crystal.                                */
  40         iop_init_time(200000000);
  41 }
  42
  43 static struct sys_timer em7210_timer = {
  44         .init           = em7210_timer_init,
  45         .offset         = iop_gettimeoffset,
  46 };
  47
  48 /*
  49  * EM7210 RTC
  50  */
  51 static struct i2c_board_info __initdata em7210_i2c_devices[] = {
  52         {
  53                 I2C_BOARD_INFO("rtc-rs5c372", 0x32),
  54                 .type = "rs5c372a",
  55         },
  56 };
  57
  58 /*
  59  * EM7210 I/O
  60  */
  61 static struct map_desc em7210_io_desc[] __initdata = {
  62         {       /* on-board devices */
  63                 .virtual        = IQ31244_UART,
  64                 .pfn            = __phys_to_pfn(IQ31244_UART),
  65                 .length         = 0x00100000,
  66                 .type           = MT_DEVICE,
  67         },
  68 };
  69
  70 void __init em7210_map_io(void)
  71 {
  72         iop3xx_map_io();
  73         iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc));
  74 }
  75
  76
  77 /*
  78  * EM7210 PCI
  79  */
  80 #define INTA    IRQ_IOP32X_XINT0
  81 #define INTB    IRQ_IOP32X_XINT1
  82 #define INTC    IRQ_IOP32X_XINT2
  83 #define INTD    IRQ_IOP32X_XINT3
  84
  85 static int __init
  86 em7210_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  87 {
  88         static int pci_irq_table[][4] = {
  89                 /*
  90                  * PCI IDSEL/INTPIN->INTLINE
  91                  * A       B       C       D
  92                  */
  93                 {INTB, INTB, INTB, INTB}, /* console / uart */
  94                 {INTA, INTA, INTA, INTA}, /* 1st 82541      */
  95                 {INTD, INTD, INTD, INTD}, /* 2nd 82541      */
  96                 {INTC, INTC, INTC, INTC}, /* GD31244        */
  97                 {INTD, INTA, INTA, INTA}, /* mini-PCI       */
  98                 {INTD, INTC, INTA, INTA}, /* NEC USB        */
  99         };
 100
 101         if (pin < 1 || pin > 4)
 102                 return -1;
 103
 104         return pci_irq_table[slot % 6][pin - 1];
 105 }
 106
 107 static struct hw_pci em7210_pci __initdata = {
 108         .swizzle        = pci_std_swizzle,
 109         .nr_controllers = 1,
 110         .setup          = iop3xx_pci_setup,
 111         .preinit        = iop3xx_pci_preinit,
 112         .scan           = iop3xx_pci_scan_bus,
 113         .map_irq        = em7210_pci_map_irq,
 114 };
 115
 116 static int __init em7210_pci_init(void)
 117 {
 118         if (machine_is_em7210())
 119                 pci_common_init(&em7210_pci);
 120
 121         return 0;
 122 }
 123
 124 subsys_initcall(em7210_pci_init);
 125
 126
 127 /*
 128  * EM7210 Flash
 129  */
 130 static struct physmap_flash_data em7210_flash_data = {
 131         .width          = 2,
 132 };
 133
 134 static struct resource em7210_flash_resource = {
 135         .start          = 0xf0000000,
 136         .end            = 0xf1ffffff,
 137         .flags          = IORESOURCE_MEM,
 138 };
 139
 140 static struct platform_device em7210_flash_device = {
 141         .name           = "physmap-flash",
 142         .id             = 0,
 143         .dev            = {
 144                 .platform_data  = &em7210_flash_data,
 145         },
 146         .num_resources  = 1,
 147         .resource       = &em7210_flash_resource,
 148 };
 149
 150
 151 /*
 152  * EM7210 UART
 153  * The physical address of the serial port is 0xfe800000,
 154  * so it can be used for physical and virtual address.
 155  */
 156 static struct plat_serial8250_port em7210_serial_port[] = {
 157         {
 158                 .mapbase        = IQ31244_UART,
 159                 .membase        = (char *)IQ31244_UART,
 160                 .irq            = IRQ_IOP32X_XINT1,
 161                 .flags          = UPF_SKIP_TEST,
 162                 .iotype         = UPIO_MEM,
 163                 .regshift       = 0,
 164                 .uartclk        = 1843200,
 165         },
 166         { },
 167 };
 168
 169 static struct resource em7210_uart_resource = {
 170         .start          = IQ31244_UART,
 171         .end            = IQ31244_UART + 7,
 172         .flags          = IORESOURCE_MEM,
 173 };
 174
 175 static struct platform_device em7210_serial_device = {
 176         .name           = "serial8250",
 177         .id             = PLAT8250_DEV_PLATFORM,
 178         .dev            = {
 179                 .platform_data          = em7210_serial_port,
 180         },
 181         .num_resources  = 1,
 182         .resource       = &em7210_uart_resource,
 183 };
 184
 185 void em7210_power_off(void)
 186 {
 187         *IOP3XX_GPOE &= 0xfe;
 188         *IOP3XX_GPOD |= 0x01;
 189 }
 190
 191 static void __init em7210_init_machine(void)
 192 {
 193         platform_device_register(&em7210_serial_device);
 194         platform_device_register(&iop3xx_i2c0_device);
 195         platform_device_register(&iop3xx_i2c1_device);
 196         platform_device_register(&em7210_flash_device);
 197         platform_device_register(&iop3xx_dma_0_channel);
 198         platform_device_register(&iop3xx_dma_1_channel);
 199
 200         i2c_register_board_info(0, em7210_i2c_devices,
 201                 ARRAY_SIZE(em7210_i2c_devices));
 202
 203
 204         pm_power_off = em7210_power_off;
 205 }
 206
 207 MACHINE_START(EM7210, "Lanner EM7210")
 208         .phys_io        = IQ31244_UART,
 209         .io_pg_offst    = ((IQ31244_UART) >> 18) & 0xfffc,
 210         .boot_params    = 0xa0000100,
 211         .map_io         = em7210_map_io,
 212         .init_irq       = iop32x_init_irq,
 213         .timer          = &em7210_timer,
 214         .init_machine   = em7210_init_machine,
 215 MACHINE_END