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authorJo-Philipp Wich <jow@openwrt.org>2012-02-02 19:26:32 +0000
committerJo-Philipp Wich <jow@openwrt.org>2012-02-02 19:26:32 +0000
commitb6be49429be09d1421bea5158b203a52d27dfe8e (patch)
treec762575f6e53f2927f15258a45542bacbb8fdf99 /target/linux/x86/patches-3.3/001-alix_platform.patch
parent7a9e4ffe8ee986800165ae653acabc95c627d3e7 (diff)
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alix2: backport platform driver updates from linux-next Add patches to x86/patches-3.2 and x86/patches-3.3 (update will appear in 3.4). [Patch from Philipp Prindeville, via http://patchwork.openwrt.org/patch/1817/]
SVN-Revision: 30001
Diffstat (limited to 'target/linux/x86/patches-3.3/001-alix_platform.patch')
-rw-r--r--target/linux/x86/patches-3.3/001-alix_platform.patch132
1 files changed, 132 insertions, 0 deletions
diff --git a/target/linux/x86/patches-3.3/001-alix_platform.patch b/target/linux/x86/patches-3.3/001-alix_platform.patch
new file mode 100644
index 0000000..21a5278
--- /dev/null
+++ b/target/linux/x86/patches-3.3/001-alix_platform.patch
@@ -0,0 +1,132 @@
+index dc5f1d3..a24bf8c 100644
+--- a/arch/x86/platform/geode/alix.c
++++ b/arch/x86/platform/geode/alix.c
+@@ -6,6 +6,7 @@
+ *
+ * Copyright (C) 2008 Constantin Baranov <const@mimas.ru>
+ * Copyright (C) 2011 Ed Wildgoose <kernel@wildgooses.com>
++ * and Philip Prindeville <philipp@redfish-solutions.com>
+ *
+ * TODO: There are large similarities with leds-net5501.c
+ * by Alessandro Zummo <a.zummo@towertech.it>
+@@ -24,14 +25,47 @@
+ #include <linux/leds.h>
+ #include <linux/platform_device.h>
+ #include <linux/gpio.h>
++#include <linux/input.h>
++#include <linux/gpio_keys.h>
++#include <linux/dmi.h>
+
+ #include <asm/geode.h>
+
+-static int force = 0;
++#define BIOS_SIGNATURE_TINYBIOS 0xf0000
++#define BIOS_SIGNATURE_COREBOOT 0x500
++#define BIOS_REGION_SIZE 0x10000
++
++static bool force = 0;
+ module_param(force, bool, 0444);
+ /* FIXME: Award bios is not automatically detected as Alix platform */
+ MODULE_PARM_DESC(force, "Force detection as ALIX.2/ALIX.3 platform");
+
++static struct gpio_keys_button alix_gpio_buttons[] = {
++ {
++ .code = KEY_RESTART,
++ .gpio = 24,
++ .active_low = 1,
++ .desc = "Reset button",
++ .type = EV_KEY,
++ .wakeup = 0,
++ .debounce_interval = 100,
++ .can_disable = 0,
++ }
++};
++static struct gpio_keys_platform_data alix_buttons_data = {
++ .buttons = alix_gpio_buttons,
++ .nbuttons = ARRAY_SIZE(alix_gpio_buttons),
++ .poll_interval = 20,
++};
++
++static struct platform_device alix_buttons_dev = {
++ .name = "gpio-keys-polled",
++ .id = 1,
++ .dev = {
++ .platform_data = &alix_buttons_data,
++ }
++};
++
+ static struct gpio_led alix_leds[] = {
+ {
+ .name = "alix:1",
+@@ -64,17 +106,22 @@ static struct platform_device alix_leds_
+ .dev.platform_data = &alix_leds_data,
+ };
+
++static struct __initdata platform_device *alix_devs[] = {
++ &alix_buttons_dev,
++ &alix_leds_dev,
++};
++
+ static void __init register_alix(void)
+ {
+ /* Setup LED control through leds-gpio driver */
+- platform_device_register(&alix_leds_dev);
++ platform_add_devices(alix_devs, ARRAY_SIZE(alix_devs));
+ }
+
+ static int __init alix_present(unsigned long bios_phys,
+ const char *alix_sig,
+ size_t alix_sig_len)
+ {
+- const size_t bios_len = 0x00010000;
++ const size_t bios_len = BIOS_REGION_SIZE;
+ const char *bios_virt;
+ const char *scan_end;
+ const char *p;
+@@ -109,7 +156,8 @@ static int __init alix_present(unsigned
+ *a = '\0';
+
+ tail = p + alix_sig_len;
+- if ((tail[0] == '2' || tail[0] == '3')) {
++ if ((tail[0] == '2' || tail[0] == '3' || tail[0] == '6')) {
++
+ printk(KERN_INFO
+ "%s: system is recognized as \"%s\"\n",
+ KBUILD_MODNAME, name);
+@@ -120,6 +169,24 @@ static int __init alix_present(unsigned
+ return 0;
+ }
+
++static bool __init alix_present_dmi(void)
++{
++ const char *vendor, *product;
++
++ vendor = dmi_get_system_info(DMI_SYS_VENDOR);
++ if (!vendor || strcmp(vendor, "PC Engines"))
++ return false;
++
++ product = dmi_get_system_info(DMI_PRODUCT_NAME);
++ if (!product || (strcmp(product, "ALIX.2D") && strcmp(product, "ALIX.6")))
++ return false;
++
++ printk(KERN_INFO "%s: system is recognized as \"%s %s\"\n",
++ KBUILD_MODNAME, vendor, product);
++
++ return true;
++}
++
+ static int __init alix_init(void)
+ {
+ const char tinybios_sig[] = "PC Engines ALIX.";
+@@ -128,8 +197,9 @@ static int __init alix_init(void)
+ if (!is_geode())
+ return 0;
+
+- if (alix_present(0xf0000, tinybios_sig, sizeof(tinybios_sig) - 1) ||
+- alix_present(0x500, coreboot_sig, sizeof(coreboot_sig) - 1))
++ if (alix_present(BIOS_SIGNATURE_TINYBIOS, tinybios_sig, sizeof(tinybios_sig) - 1) ||
++ alix_present(BIOS_SIGNATURE_COREBOOT, coreboot_sig, sizeof(coreboot_sig) - 1) ||
++ alix_present_dmi())
+ register_alix();
+
+ return 0;