arch/arm/mach-nspire/nspire.c

   1 /*
   2  *      linux/arch/arm/mach-nspire/nspire.c
   3  *
   4  *      Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2, as
   8  * published by the Free Software Foundation.
   9  *
  10  */
  11 #include <linux/init.h>
  12 #include <linux/of_irq.h>
  13 #include <linux/of_address.h>
  14 #include <linux/of_platform.h>
  15 #include <linux/irqchip.h>
  16 #include <linux/irqchip/arm-vic.h>
  17 #include <linux/clkdev.h>
  18 #include <linux/amba/bus.h>
  19 #include <linux/amba/clcd.h>
  20
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/map.h>
  24
  25 #include <asm/hardware/timer-sp.h>
  26
  27 #include "mmio.h"
  28 #include "clcd.h"
  29
  30 static const char *const nspire_dt_match[] __initconst = {
  31         "ti,nspire",
  32         "ti,nspire-cx",
  33         "ti,nspire-tp",
  34         "ti,nspire-clp",
  35         NULL,
  36 };
  37
  38 static void __init nspire_map_io(void)
  39 {
  40         debug_ll_io_init();
  41 }
  42
  43 static struct clcd_board nspire_clcd_data = {
  44         .name           = "LCD",
  45         .caps           = CLCD_CAP_5551 | CLCD_CAP_565,
  46         .check          = clcdfb_check,
  47         .decode         = clcdfb_decode,
  48         .setup          = nspire_clcd_setup,
  49         .mmap           = nspire_clcd_mmap,
  50         .remove         = nspire_clcd_remove,
  51 };
  52
  53
  54 static struct of_dev_auxdata nspire_auxdata[] __initdata = {
  55         OF_DEV_AUXDATA("arm,pl111", NSPIRE_LCD_PHYS_BASE,
  56                         NULL, &nspire_clcd_data),
  57         { }
  58 };
  59
  60 static void __init nspire_init(void)
  61 {
  62         of_platform_populate(NULL, of_default_bus_match_table,
  63                         nspire_auxdata, NULL);
  64 }
  65
  66 static void nspire_restart(enum reboot_mode mode, const char *cmd)
  67 {
  68         void __iomem *base = ioremap(NSPIRE_MISC_PHYS_BASE, SZ_4K);
  69         if (!base)
  70                 return;
  71
  72         writel(2, base + NSPIRE_MISC_HWRESET);
  73 }
  74
  75 DT_MACHINE_START(NSPIRE, "TI-NSPIRE")
  76         .dt_compat      = nspire_dt_match,
  77         .map_io         = nspire_map_io,
  78         .init_machine   = nspire_init,
  79         .restart        = nspire_restart,
  80 MACHINE_END