arch/x86/platform/geode/geos.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * System Specific setup for Traverse Technologies GEOS.
   4  * At the moment this means setup of GPIO control of LEDs.
   5  *
   6  * Copyright (C) 2008 Constantin Baranov <const@mimas.ru>
   7  * Copyright (C) 2011 Ed Wildgoose <kernel@wildgooses.com>
   8  *                and Philip Prindeville <philipp@redfish-solutions.com>
   9  *
  10  * TODO: There are large similarities with leds-net5501.c
  11  * by Alessandro Zummo <a.zummo@towertech.it>
  12  * In the future leds-net5501.c should be migrated over to platform
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/io.h>
  18 #include <linux/string.h>
  19 #include <linux/dmi.h>
  20
  21 #include <asm/geode.h>
  22
  23 #include "geode-common.h"
  24
  25 static const struct geode_led geos_leds[] __initconst = {
  26         { 6, true },
  27         { 25, false },
  28         { 27, false },
  29 };
  30
  31 static void __init register_geos(void)
  32 {
  33         geode_create_restart_key(3);
  34         geode_create_leds("geos", geos_leds, ARRAY_SIZE(geos_leds));
  35 }
  36
  37 static int __init geos_init(void)
  38 {
  39         const char *vendor, *product;
  40
  41         if (!is_geode())
  42                 return 0;
  43
  44         vendor = dmi_get_system_info(DMI_SYS_VENDOR);
  45         if (!vendor || strcmp(vendor, "Traverse Technologies"))
  46                 return 0;
  47
  48         product = dmi_get_system_info(DMI_PRODUCT_NAME);
  49         if (!product || strcmp(product, "Geos"))
  50                 return 0;
  51
  52         printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n",
  53                KBUILD_MODNAME, vendor, product);
  54
  55         register_geos();
  56
  57         return 0;
  58 }
  59 device_initcall(geos_init);