arch/arm/mach-nspire/nspire.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *      linux/arch/arm/mach-nspire/nspire.c
   4  *
   5  *      Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
   6  */
   7 #include <linux/init.h>
   8 #include <linux/of_irq.h>
   9 #include <linux/of_address.h>
  10 #include <linux/of_platform.h>
  11 #include <linux/irqchip.h>
  12 #include <linux/irqchip/arm-vic.h>
  13 #include <linux/clkdev.h>
  14 #include <linux/amba/bus.h>
  15 #include <linux/amba/clcd.h>
  16
  17 #include <asm/mach/arch.h>
  18 #include <asm/mach-types.h>
  19 #include <asm/mach/map.h>
  20
  21 #include "mmio.h"
  22 #include "clcd.h"
  23
  24 static const char *const nspire_dt_match[] __initconst = {
  25         "ti,nspire",
  26         "ti,nspire-cx",
  27         "ti,nspire-tp",
  28         "ti,nspire-clp",
  29         NULL,
  30 };
  31
  32 static struct clcd_board nspire_clcd_data = {
  33         .name           = "LCD",
  34         .caps           = CLCD_CAP_5551 | CLCD_CAP_565,
  35         .check          = clcdfb_check,
  36         .decode         = clcdfb_decode,
  37         .setup          = nspire_clcd_setup,
  38         .mmap           = nspire_clcd_mmap,
  39         .remove         = nspire_clcd_remove,
  40 };
  41
  42
  43 static struct of_dev_auxdata nspire_auxdata[] __initdata = {
  44         OF_DEV_AUXDATA("arm,pl111", NSPIRE_LCD_PHYS_BASE,
  45                         NULL, &nspire_clcd_data),
  46         { }
  47 };
  48
  49 static void __init nspire_init(void)
  50 {
  51         of_platform_default_populate(NULL, nspire_auxdata, NULL);
  52 }
  53
  54 static void nspire_restart(enum reboot_mode mode, const char *cmd)
  55 {
  56         void __iomem *base = ioremap(NSPIRE_MISC_PHYS_BASE, SZ_4K);
  57         if (!base)
  58                 return;
  59
  60         writel(2, base + NSPIRE_MISC_HWRESET);
  61 }
  62
  63 DT_MACHINE_START(NSPIRE, "TI-NSPIRE")
  64         .dt_compat      = nspire_dt_match,
  65         .init_machine   = nspire_init,
  66         .restart        = nspire_restart,
  67 MACHINE_END