1 files changed, 86 insertions, 56 deletions

diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index bb8956d0c104..3d849d13657d 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -906,9 +906,26 @@ static ssize_t hotkey_radio_sw_show(struct device *dev,
 static struct device_attribute dev_attr_hotkey_radio_sw =
         __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL);
 
+/* sysfs hotkey report_mode -------------------------------------------- */
+static ssize_t hotkey_report_mode_show(struct device *dev,
+                           struct device_attribute *attr,
+                           char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "%d\n",
+                (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
+}
+
+static struct device_attribute dev_attr_hotkey_report_mode =
+        __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
+
 /* --------------------------------------------------------------------- */
 
-static struct attribute *hotkey_mask_attributes[] = {
+static struct attribute *hotkey_attributes[] __initdata = {
+        &dev_attr_hotkey_enable.attr,
+        &dev_attr_hotkey_report_mode.attr,
+};
+
+static struct attribute *hotkey_mask_attributes[] __initdata = {
         &dev_attr_hotkey_mask.attr,
         &dev_attr_hotkey_bios_enabled.attr,
         &dev_attr_hotkey_bios_mask.attr,
@@ -987,11 +1004,12 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                 str_supported(tp_features.hotkey));
 
         if (tp_features.hotkey) {
-                hotkey_dev_attributes = create_attr_set(7, NULL);
+                hotkey_dev_attributes = create_attr_set(8, NULL);
                 if (!hotkey_dev_attributes)
                         return -ENOMEM;
-                res = add_to_attr_set(hotkey_dev_attributes,
-                                &dev_attr_hotkey_enable.attr);
+                res = add_many_to_attr_set(hotkey_dev_attributes,
+                                hotkey_attributes,
+                                ARRAY_SIZE(hotkey_attributes));
                 if (res)
                         return res;
 
@@ -1055,11 +1073,6 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                                 TPACPI_HOTKEY_MAP_SIZE);
                 }
 
-#ifndef CONFIG_THINKPAD_ACPI_INPUT_ENABLED
-                for (i = 0; i < 12; i++)
-                        hotkey_keycode_map[i] = KEY_UNKNOWN;
-#endif /* ! CONFIG_THINKPAD_ACPI_INPUT_ENABLED */
-
                 set_bit(EV_KEY, tpacpi_inputdev->evbit);
                 set_bit(EV_MSC, tpacpi_inputdev->evbit);
                 set_bit(MSC_SCAN, tpacpi_inputdev->mscbit);
@@ -1081,14 +1094,17 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
                         set_bit(SW_RADIO, tpacpi_inputdev->swbit);
                 }
 
-#ifdef CONFIG_THINKPAD_ACPI_INPUT_ENABLED
                 dbg_printk(TPACPI_DBG_INIT,
                                 "enabling hot key handling\n");
                 res = hotkey_set(1, (hotkey_all_mask & ~hotkey_reserved_mask)
                                         | hotkey_orig_mask);
                 if (res)
                         return res;
-#endif /* CONFIG_THINKPAD_ACPI_INPUT_ENABLED */
+
+                dbg_printk(TPACPI_DBG_INIT,
+                                "legacy hot key reporting over procfs %s\n",
+                                (hotkey_report_mode < 2) ?
+                                        "enabled" : "disabled");
         }
 
         return (tp_features.hotkey)? 0 : 1;
@@ -1142,58 +1158,65 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event)
 {
         u32 hkey;
         unsigned int keycode, scancode;
-        int sendacpi = 1;
+        int send_acpi_ev = 0;
 
         if (event == 0x80 && acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) {
-                if (tpacpi_inputdev->users > 0) {
-                        switch (hkey >> 12) {
-                        case 1:
-                                /* 0x1000-0x1FFF: key presses */
-                                scancode = hkey & 0xfff;
-                                if (scancode > 0 && scancode < 0x21) {
-                                        scancode--;
-                                        keycode = hotkey_keycode_map[scancode];
-                                        tpacpi_input_send_key(scancode, keycode);
-                                        sendacpi = (keycode == KEY_RESERVED
-                                                || keycode == KEY_UNKNOWN);
-                                } else {
-                                        printk(IBM_ERR
-                                               "hotkey 0x%04x out of range for keyboard map\n",
-                                               hkey);
-                                }
-                                break;
-                        case 5:
-                                /* 0x5000-0x5FFF: LID */
-                                /* we don't handle it through this path, just
-                                 * eat up known LID events */
-                                if (hkey != 0x5001 && hkey != 0x5002) {
-                                        printk(IBM_ERR
-                                                "unknown LID-related hotkey event: 0x%04x\n",
-                                                hkey);
-                                }
+                switch (hkey >> 12) {
+                case 1:
+                        /* 0x1000-0x1FFF: key presses */
+                        scancode = hkey & 0xfff;
+                        if (scancode > 0 && scancode < 0x21) {
+                                scancode--;
+                                keycode = hotkey_keycode_map[scancode];
+                                tpacpi_input_send_key(scancode, keycode);
+                        } else {
+                                printk(IBM_ERR
+                                       "hotkey 0x%04x out of range for keyboard map\n",
+                                       hkey);
+                                send_acpi_ev = 1;
+                        }
+                        break;
+                case 5:
+                        /* 0x5000-0x5FFF: LID */
+                        /* we don't handle it through this path, just
+                         * eat up known LID events */
+                        if (hkey != 0x5001 && hkey != 0x5002) {
+                                printk(IBM_ERR
+                                        "unknown LID-related hotkey event: 0x%04x\n",
+                                        hkey);
+                                send_acpi_ev = 1;
+                        }
+                        break;
+                case 7:
+                        /* 0x7000-0x7FFF: misc */
+                        if (tp_features.hotkey_wlsw && hkey == 0x7000) {
+                                tpacpi_input_send_radiosw();
                                 break;
-                        case 7:
-                                /* 0x7000-0x7FFF: misc */
-                                if (tp_features.hotkey_wlsw && hkey == 0x7000) {
-                                                tpacpi_input_send_radiosw();
-                                                sendacpi = 0;
-                                        break;
-                                }
-                                /* fallthrough to default */
-                        default:
-                                /* case 2: dock-related */
-                                /*      0x2305 - T43 waking up due to bay lever eject while aslept */
-                                /* case 3: ultra-bay related. maybe bay in dock? */
-                                /*      0x3003 - T43 after wake up by bay lever eject (0x2305) */
-                                printk(IBM_NOTICE "unhandled hotkey event 0x%04x\n", hkey);
                         }
+                        /* fallthrough to default */
+                default:
+                        /* case 2: dock-related */
+                        /*      0x2305 - T43 waking up due to bay lever eject while aslept */
+                        /* case 3: ultra-bay related. maybe bay in dock? */
+                        /*      0x3003 - T43 after wake up by bay lever eject (0x2305) */
+                        printk(IBM_NOTICE "unhandled HKEY event 0x%04x\n", hkey);
+                        send_acpi_ev = 1;
                 }
-
-                if (sendacpi)
-                        acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
         } else {
                 printk(IBM_ERR "unknown hotkey notification event %d\n", event);
-                acpi_bus_generate_proc_event(ibm->acpi->device, event, 0);
+                hkey = 0;
+                send_acpi_ev = 1;
+        }
+
+        /* Legacy events */
+        if (send_acpi_ev || hotkey_report_mode < 2)
+                acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey);
+
+        /* netlink events */
+        if (send_acpi_ev) {
+                acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class,
+                                                ibm->acpi->device->dev.bus_id,
+                                                event, hkey);
         }
 }
 
@@ -4623,6 +4646,9 @@ module_param_named(fan_control, fan_control_allowed, bool, 0);
 static int brightness_mode;
 module_param_named(brightness_mode, brightness_mode, int, 0);
 
+static unsigned int hotkey_report_mode;
+module_param(hotkey_report_mode, uint, 0);
+
 #define IBM_PARAM(feature) \
         module_param_call(feature, set_ibm_param, NULL, NULL, 0)
 
@@ -4648,6 +4674,10 @@ static int __init thinkpad_acpi_module_init(void)
 {
         int ret, i;
 
+        /* Parameter checking */
+        if (hotkey_report_mode > 2)
+                return -EINVAL;
+
         /* Driver-level probe */
 
         get_thinkpad_model_data(&thinkpad_id);