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 "mmio.h"
  26 #include "clcd.h"
  27
  28 static const char *const nspire_dt_match[] __initconst = {
  29         "ti,nspire",
  30         "ti,nspire-cx",
  31         "ti,nspire-tp",
  32         "ti,nspire-clp",
  33         NULL,
  34 };
  35
  36 static void __init nspire_map_io(void)
  37 {
  38         debug_ll_io_init();
  39 }
  40
  41 static struct clcd_board nspire_clcd_data = {
  42         .name           = "LCD",
  43         .caps           = CLCD_CAP_5551 | CLCD_CAP_565,
  44         .check          = clcdfb_check,
  45         .decode         = clcdfb_decode,
  46         .setup          = nspire_clcd_setup,
  47         .mmap           = nspire_clcd_mmap,
  48         .remove         = nspire_clcd_remove,
  49 };
  50
  51
  52 static struct of_dev_auxdata nspire_auxdata[] __initdata = {
  53         OF_DEV_AUXDATA("arm,pl111", NSPIRE_LCD_PHYS_BASE,
  54                         NULL, &nspire_clcd_data),
  55         { }
  56 };
  57
  58 static void __init nspire_init(void)
  59 {
  60         of_platform_populate(NULL, of_default_bus_match_table,
  61                         nspire_auxdata, NULL);
  62 }
  63
  64 static void nspire_restart(enum reboot_mode mode, const char *cmd)
  65 {
  66         void __iomem *base = ioremap(NSPIRE_MISC_PHYS_BASE, SZ_4K);
  67         if (!base)
  68                 return;
  69
  70         writel(2, base + NSPIRE_MISC_HWRESET);
  71 }
  72
  73 DT_MACHINE_START(NSPIRE, "TI-NSPIRE")
  74         .dt_compat      = nspire_dt_match,
  75         .map_io         = nspire_map_io,
  76         .init_machine   = nspire_init,
  77         .restart        = nspire_restart,
  78 MACHINE_END