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/clk-provider.h>
  18 #include <linux/clkdev.h>
  19 #include <linux/amba/bus.h>
  20 #include <linux/amba/clcd.h>
  21 #include <linux/clocksource.h>
  22
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/map.h>
  26
  27 #include <asm/hardware/timer-sp.h>
  28
  29 #include "mmio.h"
  30 #include "clcd.h"
  31
  32 static const char *nspire_dt_match[] __initconst = {
  33         "ti,nspire",
  34         "ti,nspire-cx",
  35         "ti,nspire-tp",
  36         "ti,nspire-clp",
  37         NULL,
  38 };
  39
  40 static void __init nspire_map_io(void)
  41 {
  42         debug_ll_io_init();
  43 }
  44
  45 static struct clcd_board nspire_clcd_data = {
  46         .name           = "LCD",
  47         .caps           = CLCD_CAP_5551 | CLCD_CAP_565,
  48         .check          = clcdfb_check,
  49         .decode         = clcdfb_decode,
  50         .setup          = nspire_clcd_setup,
  51         .mmap           = nspire_clcd_mmap,
  52         .remove         = nspire_clcd_remove,
  53 };
  54
  55
  56 static struct of_dev_auxdata nspire_auxdata[] __initdata = {
  57         OF_DEV_AUXDATA("arm,pl111", NSPIRE_LCD_PHYS_BASE,
  58                         NULL, &nspire_clcd_data),
  59         { }
  60 };
  61
  62 static void __init nspire_init(void)
  63 {
  64         of_platform_populate(NULL, of_default_bus_match_table,
  65                         nspire_auxdata, NULL);
  66 }
  67
  68 static void __init nspire_init_time(void)
  69 {
  70         of_clk_init(NULL);
  71         clocksource_of_init();
  72 }
  73
  74 static void nspire_restart(char mode, const char *cmd)
  75 {
  76         void __iomem *base = ioremap(NSPIRE_MISC_PHYS_BASE, SZ_4K);
  77         if (!base)
  78                 return;
  79
  80         writel(2, base + NSPIRE_MISC_HWRESET);
  81 }
  82
  83 DT_MACHINE_START(NSPIRE, "TI-NSPIRE")
  84         .dt_compat      = nspire_dt_match,
  85         .map_io         = nspire_map_io,
  86         .init_time      = nspire_init_time,
  87         .init_machine   = nspire_init,
  88         .restart        = nspire_restart,
  89 MACHINE_END