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 struct clcd_board nspire_clcd_data = {
  37         .name           = "LCD",
  38         .caps           = CLCD_CAP_5551 | CLCD_CAP_565,
  39         .check          = clcdfb_check,
  40         .decode         = clcdfb_decode,
  41         .setup          = nspire_clcd_setup,
  42         .mmap           = nspire_clcd_mmap,
  43         .remove         = nspire_clcd_remove,
  44 };
  45
  46
  47 static struct of_dev_auxdata nspire_auxdata[] __initdata = {
  48         OF_DEV_AUXDATA("arm,pl111", NSPIRE_LCD_PHYS_BASE,
  49                         NULL, &nspire_clcd_data),
  50         { }
  51 };
  52
  53 static void __init nspire_init(void)
  54 {
  55         of_platform_default_populate(NULL, nspire_auxdata, NULL);
  56 }
  57
  58 static void nspire_restart(enum reboot_mode mode, const char *cmd)
  59 {
  60         void __iomem *base = ioremap(NSPIRE_MISC_PHYS_BASE, SZ_4K);
  61         if (!base)
  62                 return;
  63
  64         writel(2, base + NSPIRE_MISC_HWRESET);
  65 }
  66
  67 DT_MACHINE_START(NSPIRE, "TI-NSPIRE")
  68         .dt_compat      = nspire_dt_match,
  69         .init_machine   = nspire_init,
  70         .restart        = nspire_restart,
  71 MACHINE_END