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

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;