1 files changed, 163 insertions, 135 deletions

diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 5838c69b2fb3..e2be6bb33d92 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -31,10 +31,12 @@
 #include <acpi/acpi_bus.h>
 #include <linux/uaccess.h>
 #include <linux/input.h>
+#include <linux/input/sparse-keymap.h>
 #include <linux/rfkill.h>
 #include <linux/pci.h>
 #include <linux/pci_hotplug.h>
 #include <linux/leds.h>
+#include <linux/dmi.h>
 
 #define EEEPC_LAPTOP_VERSION    "0.1"
 #define EEEPC_LAPTOP_NAME       "Eee PC Hotkey Driver"
@@ -48,6 +50,14 @@ MODULE_AUTHOR("Corentin Chary, Eric Cooper");
 MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME);
 MODULE_LICENSE("GPL");
 
+static bool hotplug_disabled;
+
+module_param(hotplug_disabled, bool, 0644);
+MODULE_PARM_DESC(hotplug_disabled,
+                 "Disable hotplug for wireless device. "
+                 "If your laptop need that, please report to "
+                 "acpi4asus-user@lists.sourceforge.net.");
+
 /*
  * Definitions for Asus EeePC
  */
@@ -120,38 +130,28 @@ static const char *cm_setv[] = {
         NULL, NULL, "PBPS", "TPDS"
 };
 
-struct key_entry {
-        char type;
-        u8 code;
-        u16 keycode;
-};
-
-enum { KE_KEY, KE_END };
-
 static const struct key_entry eeepc_keymap[] = {
-        /* Sleep already handled via generic ACPI code */
-        {KE_KEY, 0x10, KEY_WLAN },
-        {KE_KEY, 0x11, KEY_WLAN },
-        {KE_KEY, 0x12, KEY_PROG1 },
-        {KE_KEY, 0x13, KEY_MUTE },
-        {KE_KEY, 0x14, KEY_VOLUMEDOWN },
-        {KE_KEY, 0x15, KEY_VOLUMEUP },
-        {KE_KEY, 0x16, KEY_DISPLAY_OFF },
-        {KE_KEY, 0x1a, KEY_COFFEE },
-        {KE_KEY, 0x1b, KEY_ZOOM },
-        {KE_KEY, 0x1c, KEY_PROG2 },
-        {KE_KEY, 0x1d, KEY_PROG3 },
-        {KE_KEY, NOTIFY_BRN_MIN, KEY_BRIGHTNESSDOWN },
-        {KE_KEY, NOTIFY_BRN_MAX, KEY_BRIGHTNESSUP },
-        {KE_KEY, 0x30, KEY_SWITCHVIDEOMODE },
-        {KE_KEY, 0x31, KEY_SWITCHVIDEOMODE },
-        {KE_KEY, 0x32, KEY_SWITCHVIDEOMODE },
-        {KE_KEY, 0x37, KEY_F13 }, /* Disable Touchpad */
-        {KE_KEY, 0x38, KEY_F14 },
-        {KE_END, 0},
+        { KE_KEY, 0x10, { KEY_WLAN } },
+        { KE_KEY, 0x11, { KEY_WLAN } },
+        { KE_KEY, 0x12, { KEY_PROG1 } },
+        { KE_KEY, 0x13, { KEY_MUTE } },
+        { KE_KEY, 0x14, { KEY_VOLUMEDOWN } },
+        { KE_KEY, 0x15, { KEY_VOLUMEUP } },
+        { KE_KEY, 0x16, { KEY_DISPLAY_OFF } },
+        { KE_KEY, 0x1a, { KEY_COFFEE } },
+        { KE_KEY, 0x1b, { KEY_ZOOM } },
+        { KE_KEY, 0x1c, { KEY_PROG2 } },
+        { KE_KEY, 0x1d, { KEY_PROG3 } },
+        { KE_KEY, NOTIFY_BRN_MIN, { KEY_BRIGHTNESSDOWN } },
+        { KE_KEY, NOTIFY_BRN_MAX, { KEY_BRIGHTNESSUP } },
+        { KE_KEY, 0x30, { KEY_SWITCHVIDEOMODE } },
+        { KE_KEY, 0x31, { KEY_SWITCHVIDEOMODE } },
+        { KE_KEY, 0x32, { KEY_SWITCHVIDEOMODE } },
+        { KE_KEY, 0x37, { KEY_F13 } }, /* Disable Touchpad */
+        { KE_KEY, 0x38, { KEY_F14 } },
+        { KE_END, 0 },
 };
 
-
 /*
  * This is the main structure, we can use it to store useful information
  */
@@ -159,6 +159,8 @@ struct eeepc_laptop {
         acpi_handle handle;             /* the handle of the acpi device */
         u32 cm_supported;               /* the control methods supported
                                            by this BIOS */
+        bool cpufv_disabled;
+        bool hotplug_disabled;
         u16 event_count[128];           /* count for each event */
 
         struct platform_device *platform_device;
@@ -378,6 +380,8 @@ static ssize_t store_cpufv(struct device *dev,
         struct eeepc_cpufv c;
         int rv, value;
 
+        if (eeepc->cpufv_disabled)
+                return -EPERM;
         if (get_cpufv(eeepc, &c))
                 return -ENODEV;
         rv = parse_arg(buf, count, &value);
@@ -389,6 +393,41 @@ static ssize_t store_cpufv(struct device *dev,
         return rv;
 }
 
+static ssize_t show_cpufv_disabled(struct device *dev,
+                          struct device_attribute *attr,
+                          char *buf)
+{
+        struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
+
+        return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
+}
+
+static ssize_t store_cpufv_disabled(struct device *dev,
+                           struct device_attribute *attr,
+                           const char *buf, size_t count)
+{
+        struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
+        int rv, value;
+
+        rv = parse_arg(buf, count, &value);
+        if (rv < 0)
+                return rv;
+
+        switch (value) {
+        case 0:
+                if (eeepc->cpufv_disabled)
+                        pr_warning("cpufv enabled (not officially supported "
+                                "on this model)\n");
+                eeepc->cpufv_disabled = false;
+                return rv;
+        case 1:
+                return -EPERM;
+        default:
+                return -EINVAL;
+        }
+}
+
+
 static struct device_attribute dev_attr_cpufv = {
         .attr = {
                 .name = "cpufv",
@@ -404,12 +443,22 @@ static struct device_attribute dev_attr_available_cpufv = {
         .show   = show_available_cpufv
 };
 
+static struct device_attribute dev_attr_cpufv_disabled = {
+        .attr = {
+                .name = "cpufv_disabled",
+                .mode = 0644 },
+        .show   = show_cpufv_disabled,
+        .store  = store_cpufv_disabled
+};
+
+
 static struct attribute *platform_attributes[] = {
         &dev_attr_camera.attr,
         &dev_attr_cardr.attr,
         &dev_attr_disp.attr,
         &dev_attr_cpufv.attr,
         &dev_attr_available_cpufv.attr,
+        &dev_attr_cpufv_disabled.attr,
         NULL
 };
 
@@ -796,6 +845,9 @@ static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
         if (result && result != -ENODEV)
                 goto exit;
 
+        if (eeepc->hotplug_disabled)
+                return 0;
+
         result = eeepc_setup_pci_hotplug(eeepc);
         /*
          * If we get -EBUSY then something else is handling the PCI hotplug -
@@ -1090,120 +1142,42 @@ static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
 /*
  * Input device (i.e. hotkeys)
  */
-static struct key_entry *eeepc_get_entry_by_scancode(
-        struct eeepc_laptop *eeepc,
-        int code)
+static int eeepc_input_init(struct eeepc_laptop *eeepc)
 {
-        struct key_entry *key;
+        struct input_dev *input;
+        int error;
 
-        for (key = eeepc->keymap; key->type != KE_END; key++)
-                if (code == key->code)
-                        return key;
-
-        return NULL;
-}
-
-static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
-{
-        static struct key_entry *key;
-
-        key = eeepc_get_entry_by_scancode(eeepc, event);
-        if (key) {
-                switch (key->type) {
-                case KE_KEY:
-                        input_report_key(eeepc->inputdev, key->keycode,
-                                                1);
-                        input_sync(eeepc->inputdev);
-                        input_report_key(eeepc->inputdev, key->keycode,
-                                                0);
-                        input_sync(eeepc->inputdev);
-                        break;
-                }
+        input = input_allocate_device();
+        if (!input) {
+                pr_info("Unable to allocate input device\n");
+                return -ENOMEM;
         }
-}
-
-static struct key_entry *eeepc_get_entry_by_keycode(
-        struct eeepc_laptop *eeepc, int code)
-{
-        struct key_entry *key;
-
-        for (key = eeepc->keymap; key->type != KE_END; key++)
-                if (code == key->keycode && key->type == KE_KEY)
-                        return key;
 
-        return NULL;
-}
+        input->name = "Asus EeePC extra buttons";
+        input->phys = EEEPC_LAPTOP_FILE "/input0";
+        input->id.bustype = BUS_HOST;
+        input->dev.parent = &eeepc->platform_device->dev;
 
-static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
-{
-        struct eeepc_laptop *eeepc = input_get_drvdata(dev);
-        struct key_entry *key = eeepc_get_entry_by_scancode(eeepc, scancode);
-
-        if (key && key->type == KE_KEY) {
-                *keycode = key->keycode;
-                return 0;
+        error = sparse_keymap_setup(input, eeepc_keymap, NULL);
+        if (error) {
+                pr_err("Unable to setup input device keymap\n");
+                goto err_free_dev;
         }
 
-        return -EINVAL;
-}
-
-static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
-{
-        struct eeepc_laptop *eeepc = input_get_drvdata(dev);
-        struct key_entry *key;
-        int old_keycode;
-
-        if (keycode < 0 || keycode > KEY_MAX)
-                return -EINVAL;
-
-        key = eeepc_get_entry_by_scancode(eeepc, scancode);
-        if (key && key->type == KE_KEY) {
-                old_keycode = key->keycode;
-                key->keycode = keycode;
-                set_bit(keycode, dev->keybit);
-                if (!eeepc_get_entry_by_keycode(eeepc, old_keycode))
-                        clear_bit(old_keycode, dev->keybit);
-                return 0;
+        error = input_register_device(input);
+        if (error) {
+                pr_err("Unable to register input device\n");
+                goto err_free_keymap;
         }
 
-        return -EINVAL;
-}
-
-static int eeepc_input_init(struct eeepc_laptop *eeepc)
-{
-        const struct key_entry *key;
-        int result;
-
-        eeepc->inputdev = input_allocate_device();
-        if (!eeepc->inputdev) {
-                pr_info("Unable to allocate input device\n");
-                return -ENOMEM;
-        }
-        eeepc->inputdev->name = "Asus EeePC extra buttons";
-        eeepc->inputdev->dev.parent = &eeepc->platform_device->dev;
-        eeepc->inputdev->phys = EEEPC_LAPTOP_FILE "/input0";
-        eeepc->inputdev->id.bustype = BUS_HOST;
-        eeepc->inputdev->getkeycode = eeepc_getkeycode;
-        eeepc->inputdev->setkeycode = eeepc_setkeycode;
-        input_set_drvdata(eeepc->inputdev, eeepc);
-
-        eeepc->keymap = kmemdup(eeepc_keymap, sizeof(eeepc_keymap),
-                                GFP_KERNEL);
-        for (key = eeepc_keymap; key->type != KE_END; key++) {
-                switch (key->type) {
-                case KE_KEY:
-                        set_bit(EV_KEY, eeepc->inputdev->evbit);
-                        set_bit(key->keycode, eeepc->inputdev->keybit);
-                        break;
-                }
-        }
-        result = input_register_device(eeepc->inputdev);
-        if (result) {
-                pr_info("Unable to register input device\n");
-                input_free_device(eeepc->inputdev);
-                return result;
-        }
+        eeepc->inputdev = input;
         return 0;
+
+ err_free_keymap:
+        sparse_keymap_free(input);
+ err_free_dev:
+        input_free_device(input);
+        return error;
 }
 
 static void eeepc_input_exit(struct eeepc_laptop *eeepc)
@@ -1253,11 +1227,59 @@ static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
                                 * event will be desired value (or else ignored)
                                 */
                         }
-                        eeepc_input_notify(eeepc, event);
+                        sparse_keymap_report_event(eeepc->inputdev, event,
+                                                   1, true);
                 }
         } else {
                 /* Everything else is a bona-fide keypress event */
-                eeepc_input_notify(eeepc, event);
+                sparse_keymap_report_event(eeepc->inputdev, event, 1, true);
+        }
+}
+
+static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
+{
+        const char *model;
+
+        model = dmi_get_system_info(DMI_PRODUCT_NAME);
+        if (!model)
+                return;
+
+        /*
+         * Blacklist for setting cpufv (cpu speed).
+         *
+         * EeePC 4G ("701") implements CFVS, but it is not supported
+         * by the pre-installed OS, and the original option to change it
+         * in the BIOS setup screen was removed in later versions.
+         *
+         * Judging by the lack of "Super Hybrid Engine" on Asus product pages,
+         * this applies to all "701" models (4G/4G Surf/2G Surf).
+         *
+         * So Asus made a deliberate decision not to support it on this model.
+         * We have several reports that using it can cause the system to hang
+         *
+         * The hang has also been reported on a "702" (Model name "8G"?).
+         *
+         * We avoid dmi_check_system() / dmi_match(), because they use
+         * substring matching.  We don't want to affect the "701SD"
+         * and "701SDX" models, because they do support S.H.E.
+         */
+        if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
+                eeepc->cpufv_disabled = true;
+                pr_info("model %s does not officially support setting cpu "
+                        "speed\n", model);
+                pr_info("cpufv disabled to avoid instability\n");
+        }
+
+        /*
+         * Blacklist for wlan hotplug
+         *
+         * Eeepc 1005HA doesn't work like others models and don't need the
+         * hotplug code. In fact, current hotplug code seems to unplug another
+         * device...
+         */
+        if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0) {
+                eeepc->hotplug_disabled = true;
+                pr_info("wlan hotplug disabled\n");
         }
 }
 
@@ -1342,6 +1364,10 @@ static int __devinit eeepc_acpi_add(struct acpi_device *device)
         strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
         device->driver_data = eeepc;
 
+        eeepc->hotplug_disabled = hotplug_disabled;
+
+        eeepc_dmi_check(eeepc);
+
         result = eeepc_acpi_init(eeepc, device);
         if (result)
                 goto fail_platform;
@@ -1452,10 +1478,12 @@ static int __init eeepc_laptop_init(void)
         result = acpi_bus_register_driver(&eeepc_acpi_driver);
         if (result < 0)
                 goto fail_acpi_driver;
+
         if (!eeepc_device_present) {
                 result = -ENODEV;
                 goto fail_no_device;
         }
+
         return 0;
 
 fail_no_device: