arch/arm/mach-sa1100/hackkit.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * linux/arch/arm/mach-sa1100/hackkit.c
   4  *
   5  * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
   6  *
   7  * This file contains all HackKit tweaks. Based on original work from
   8  * Nicolas Pitre's assabet fixes
   9  */
  10 #include <linux/init.h>
  11 #include <linux/kernel.h>
  12 #include <linux/sched.h>
  13 #include <linux/tty.h>
  14 #include <linux/module.h>
  15 #include <linux/errno.h>
  16 #include <linux/cpufreq.h>
  17 #include <linux/platform_data/sa11x0-serial.h>
  18 #include <linux/serial_core.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/partitions.h>
  21 #include <linux/tty.h>
  22 #include <linux/gpio.h>
  23 #include <linux/leds.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/pgtable.h>
  26
  27 #include <asm/mach-types.h>
  28 #include <asm/setup.h>
  29 #include <asm/page.h>
  30
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/flash.h>
  33 #include <asm/mach/map.h>
  34 #include <asm/mach/irq.h>
  35
  36 #include <mach/hardware.h>
  37 #include <mach/irqs.h>
  38
  39 #include "generic.h"
  40
  41 /**********************************************************************
  42  *  prototypes
  43  */
  44
  45 /* init funcs */
  46 static void __init hackkit_map_io(void);
  47
  48 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
  49
  50 /**********************************************************************
  51  *  global data
  52  */
  53
  54 /**********************************************************************
  55  *  static data
  56  */
  57
  58 static struct map_desc hackkit_io_desc[] __initdata = {
  59         {       /* Flash bank 0 */
  60                 .virtual        =  0xe8000000,
  61                 .pfn            = __phys_to_pfn(0x00000000),
  62                 .length         = 0x01000000,
  63                 .type           = MT_DEVICE
  64         },
  65 };
  66
  67 static struct sa1100_port_fns hackkit_port_fns __initdata = {
  68         .pm             = hackkit_uart_pm,
  69 };
  70
  71 /**********************************************************************
  72  *  Static functions
  73  */
  74
  75 static void __init hackkit_map_io(void)
  76 {
  77         sa1100_map_io();
  78         iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
  79
  80         sa1100_register_uart_fns(&hackkit_port_fns);
  81         sa1100_register_uart(0, 1);     /* com port */
  82         sa1100_register_uart(1, 2);
  83         sa1100_register_uart(2, 3);     /* radio module */
  84
  85         Ser1SDCR0 |= SDCR0_SUS;
  86 }
  87
  88 /**
  89  *      hackkit_uart_pm - powermgmt callback function for system 3 UART
  90  *      @port: uart port structure
  91  *      @state: pm state
  92  *      @oldstate: old pm state
  93  *
  94  */
  95 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
  96 {
  97         /* TODO: switch on/off uart in powersave mode */
  98 }
  99
 100 static struct mtd_partition hackkit_partitions[] = {
 101         {
 102                 .name           = "BLOB",
 103                 .size           = 0x00040000,
 104                 .offset         = 0x00000000,
 105                 .mask_flags     = MTD_WRITEABLE,  /* force read-only */
 106         }, {
 107                 .name           = "config",
 108                 .size           = 0x00040000,
 109                 .offset         = MTDPART_OFS_APPEND,
 110         }, {
 111                 .name           = "kernel",
 112                 .size           = 0x00100000,
 113                 .offset         = MTDPART_OFS_APPEND,
 114         }, {
 115                 .name           = "initrd",
 116                 .size           = 0x00180000,
 117                 .offset         = MTDPART_OFS_APPEND,
 118         }, {
 119                 .name           = "rootfs",
 120                 .size           = 0x700000,
 121                 .offset         = MTDPART_OFS_APPEND,
 122         }, {
 123                 .name           = "data",
 124                 .size           = MTDPART_SIZ_FULL,
 125                 .offset         = MTDPART_OFS_APPEND,
 126         }
 127 };
 128
 129 static struct flash_platform_data hackkit_flash_data = {
 130         .map_name       = "cfi_probe",
 131         .parts          = hackkit_partitions,
 132         .nr_parts       = ARRAY_SIZE(hackkit_partitions),
 133 };
 134
 135 static struct resource hackkit_flash_resource =
 136         DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
 137
 138 /* LEDs */
 139 struct gpio_led hackkit_gpio_leds[] = {
 140         {
 141                 .name                   = "hackkit:red",
 142                 .default_trigger        = "cpu0",
 143                 .gpio                   = 22,
 144         },
 145         {
 146                 .name                   = "hackkit:green",
 147                 .default_trigger        = "heartbeat",
 148                 .gpio                   = 23,
 149         },
 150 };
 151
 152 static struct gpio_led_platform_data hackkit_gpio_led_info = {
 153         .leds           = hackkit_gpio_leds,
 154         .num_leds       = ARRAY_SIZE(hackkit_gpio_leds),
 155 };
 156
 157 static struct platform_device hackkit_leds = {
 158         .name   = "leds-gpio",
 159         .id     = -1,
 160         .dev    = {
 161                 .platform_data  = &hackkit_gpio_led_info,
 162         }
 163 };
 164
 165 static void __init hackkit_init(void)
 166 {
 167         sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
 168         platform_device_register(&hackkit_leds);
 169 }
 170
 171 /**********************************************************************
 172  *  Exported Functions
 173  */
 174
 175 MACHINE_START(HACKKIT, "HackKit Cpu Board")
 176         .atag_offset    = 0x100,
 177         .map_io         = hackkit_map_io,
 178         .nr_irqs        = SA1100_NR_IRQS,
 179         .init_irq       = sa1100_init_irq,
 180         .init_time      = sa1100_timer_init,
 181         .init_machine   = hackkit_init,
 182         .init_late      = sa11x0_init_late,
 183         .restart        = sa11x0_restart,
 184 MACHINE_END