| 1 | index dc5f1d3..a24bf8c 100644 |
| 2 | --- a/arch/x86/platform/geode/alix.c |
| 3 | +++ b/arch/x86/platform/geode/alix.c |
| 4 | @@ -6,6 +6,7 @@ |
| 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 | @@ -24,14 +25,47 @@ |
| 13 | #include <linux/leds.h> |
| 14 | #include <linux/platform_device.h> |
| 15 | #include <linux/gpio.h> |
| 16 | +#include <linux/input.h> |
| 17 | +#include <linux/gpio_keys.h> |
| 18 | +#include <linux/dmi.h> |
| 19 | |
| 20 | #include <asm/geode.h> |
| 21 | |
| 22 | +#define BIOS_SIGNATURE_TINYBIOS 0xf0000 |
| 23 | +#define BIOS_SIGNATURE_COREBOOT 0x500 |
| 24 | +#define BIOS_REGION_SIZE 0x10000 |
| 25 | + |
| 26 | static bool force = 0; |
| 27 | module_param(force, bool, 0444); |
| 28 | /* FIXME: Award bios is not automatically detected as Alix platform */ |
| 29 | MODULE_PARM_DESC(force, "Force detection as ALIX.2/ALIX.3 platform"); |
| 30 | |
| 31 | +static struct gpio_keys_button alix_gpio_buttons[] = { |
| 32 | + { |
| 33 | + .code = KEY_RESTART, |
| 34 | + .gpio = 24, |
| 35 | + .active_low = 1, |
| 36 | + .desc = "Reset button", |
| 37 | + .type = EV_KEY, |
| 38 | + .wakeup = 0, |
| 39 | + .debounce_interval = 100, |
| 40 | + .can_disable = 0, |
| 41 | + } |
| 42 | +}; |
| 43 | +static struct gpio_keys_platform_data alix_buttons_data = { |
| 44 | + .buttons = alix_gpio_buttons, |
| 45 | + .nbuttons = ARRAY_SIZE(alix_gpio_buttons), |
| 46 | + .poll_interval = 20, |
| 47 | +}; |
| 48 | + |
| 49 | +static struct platform_device alix_buttons_dev = { |
| 50 | + .name = "gpio-keys-polled", |
| 51 | + .id = 1, |
| 52 | + .dev = { |
| 53 | + .platform_data = &alix_buttons_data, |
| 54 | + } |
| 55 | +}; |
| 56 | + |
| 57 | static struct gpio_led alix_leds[] = { |
| 58 | { |
| 59 | .name = "alix:1", |
| 60 | @@ -64,17 +98,22 @@ static struct platform_device alix_leds_ |
| 61 | .dev.platform_data = &alix_leds_data, |
| 62 | }; |
| 63 | |
| 64 | +static struct __initdata platform_device *alix_devs[] = { |
| 65 | + &alix_buttons_dev, |
| 66 | + &alix_leds_dev, |
| 67 | +}; |
| 68 | + |
| 69 | static void __init register_alix(void) |
| 70 | { |
| 71 | /* Setup LED control through leds-gpio driver */ |
| 72 | - platform_device_register(&alix_leds_dev); |
| 73 | + platform_add_devices(alix_devs, ARRAY_SIZE(alix_devs)); |
| 74 | } |
| 75 | |
| 76 | static int __init alix_present(unsigned long bios_phys, |
| 77 | const char *alix_sig, |
| 78 | size_t alix_sig_len) |
| 79 | { |
| 80 | - const size_t bios_len = 0x00010000; |
| 81 | + const size_t bios_len = BIOS_REGION_SIZE; |
| 82 | const char *bios_virt; |
| 83 | const char *scan_end; |
| 84 | const char *p; |
| 85 | @@ -109,7 +148,8 @@ static int __init alix_present(unsigned |
| 86 | *a = '\0'; |
| 87 | |
| 88 | tail = p + alix_sig_len; |
| 89 | - if ((tail[0] == '2' || tail[0] == '3')) { |
| 90 | + if ((tail[0] == '2' || tail[0] == '3' || tail[0] == '6')) { |
| 91 | + |
| 92 | printk(KERN_INFO |
| 93 | "%s: system is recognized as \"%s\"\n", |
| 94 | KBUILD_MODNAME, name); |
| 95 | @@ -120,6 +160,24 @@ static int __init alix_present(unsigned |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | +static bool __init alix_present_dmi(void) |
| 100 | +{ |
| 101 | + const char *vendor, *product; |
| 102 | + |
| 103 | + vendor = dmi_get_system_info(DMI_SYS_VENDOR); |
| 104 | + if (!vendor || strcmp(vendor, "PC Engines")) |
| 105 | + return false; |
| 106 | + |
| 107 | + product = dmi_get_system_info(DMI_PRODUCT_NAME); |
| 108 | + if (!product || (strcmp(product, "ALIX.2D") && strcmp(product, "ALIX.6"))) |
| 109 | + return false; |
| 110 | + |
| 111 | + printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n", |
| 112 | + KBUILD_MODNAME, vendor, product); |
| 113 | + |
| 114 | + return true; |
| 115 | +} |
| 116 | + |
| 117 | static int __init alix_init(void) |
| 118 | { |
| 119 | const char tinybios_sig[] = "PC Engines ALIX."; |
| 120 | @@ -128,8 +186,9 @@ static int __init alix_init(void) |
| 121 | if (!is_geode()) |
| 122 | return 0; |
| 123 | |
| 124 | - if (alix_present(0xf0000, tinybios_sig, sizeof(tinybios_sig) - 1) || |
| 125 | - alix_present(0x500, coreboot_sig, sizeof(coreboot_sig) - 1)) |
| 126 | + if (alix_present(BIOS_SIGNATURE_TINYBIOS, tinybios_sig, sizeof(tinybios_sig) - 1) || |
| 127 | + alix_present(BIOS_SIGNATURE_COREBOOT, coreboot_sig, sizeof(coreboot_sig) - 1) || |
| 128 | + alix_present_dmi()) |
| 129 | register_alix(); |
| 130 | |
| 131 | return 0; |
| 132 | |
