rt2x00: Remove input_polldev requirements for rfkill

With the new rfkill interface there is no longer a need
for the input_polldev. Create a delayed_work structure
which we can put on the mac80211 workqueue and poll the
hardware every 1000ms.

v2: Decrease poll frequency from 100ms to 1000ms

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 33 insertions, 74 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00rfkill.c b/drivers/net/wireless/rt2x00/rt2x00rfkill.c
index 207281cfa8b7..04b29716d356 100644
--- a/drivers/net/wireless/rt2x00/rt2x00rfkill.c
+++ b/drivers/net/wireless/rt2x00/rt2x00rfkill.c
@@ -23,7 +23,6 @@
         Abstract: rt2x00 rfkill routines.
  */
 
-#include <linux/input-polldev.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/rfkill.h>
@@ -61,15 +60,35 @@ static int rt2x00rfkill_toggle_radio(void *data, enum rfkill_state state)
         return retval;
 }
 
-static void rt2x00rfkill_poll(struct input_polled_dev *poll_dev)
+static int rt2x00rfkill_get_state(void *data, enum rfkill_state *state)
 {
-        struct rt2x00_dev *rt2x00dev = poll_dev->private;
-        int state = rt2x00dev->ops->lib->rfkill_poll(rt2x00dev);
+        struct rt2x00_dev *rt2x00dev = data;
 
-        if (rt2x00dev->rfkill->state != state) {
-                input_report_key(poll_dev->input, KEY_WLAN, 1);
-                input_report_key(poll_dev->input, KEY_WLAN, 0);
-        }
+        *state = rt2x00dev->rfkill->state;
+
+        return 0;
+}
+
+static void rt2x00rfkill_poll(struct work_struct *work)
+{
+        struct rt2x00_dev *rt2x00dev =
+            container_of(work, struct rt2x00_dev, rfkill_work.work);
+        int state;
+
+        if (!test_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state))
+                return;
+
+        /*
+         * rfkill_poll reports 1 when the key has been pressed and the
+         * radio should be blocked.
+         */
+        state = !rt2x00dev->ops->lib->rfkill_poll(rt2x00dev) ?
+            RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+
+        rfkill_force_state(rt2x00dev->rfkill, state);
+
+        queue_delayed_work(rt2x00dev->hw->workqueue,
+                           &rt2x00dev->rfkill_work, RFKILL_POLL_INTERVAL);
 }
 
 void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev)
@@ -83,12 +102,6 @@ void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev)
                 return;
         }
 
-        if (input_register_polled_device(rt2x00dev->poll_dev)) {
-                ERROR(rt2x00dev, "Failed to register polled device.\n");
-                rfkill_unregister(rt2x00dev->rfkill);
-                return;
-        }
-
         __set_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state);
 
         /*
@@ -96,7 +109,7 @@ void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev)
          * and correctly sends the signal to the rfkill layer about this
          * state.
          */
-        rt2x00rfkill_poll(rt2x00dev->poll_dev);
+        rt2x00rfkill_poll(&rt2x00dev->rfkill_work.work);
 }
 
 void rt2x00rfkill_unregister(struct rt2x00_dev *rt2x00dev)
@@ -105,38 +118,13 @@ void rt2x00rfkill_unregister(struct rt2x00_dev *rt2x00dev)
             !test_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state))
                 return;
 
-        input_unregister_polled_device(rt2x00dev->poll_dev);
+        cancel_delayed_work_sync(&rt2x00dev->rfkill_work);
+
         rfkill_unregister(rt2x00dev->rfkill);
 
         __clear_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state);
 }
 
-static struct input_polled_dev *
-rt2x00rfkill_allocate_polldev(struct rt2x00_dev *rt2x00dev)
-{
-        struct input_polled_dev *poll_dev;
-
-        poll_dev = input_allocate_polled_device();
-        if (!poll_dev)
-                return NULL;
-
-        poll_dev->private = rt2x00dev;
-        poll_dev->poll = rt2x00rfkill_poll;
-        poll_dev->poll_interval = RFKILL_POLL_INTERVAL;
-
-        poll_dev->input->name = rt2x00dev->ops->name;
-        poll_dev->input->phys = wiphy_name(rt2x00dev->hw->wiphy);
-        poll_dev->input->id.bustype = BUS_HOST;
-        poll_dev->input->id.vendor = 0x1814;
-        poll_dev->input->id.product = rt2x00dev->chip.rt;
-        poll_dev->input->id.version = rt2x00dev->chip.rev;
-        poll_dev->input->dev.parent = wiphy_dev(rt2x00dev->hw->wiphy);
-        poll_dev->input->evbit[0] = BIT(EV_KEY);
-        set_bit(KEY_WLAN, poll_dev->input->keybit);
-
-        return poll_dev;
-}
-
 void rt2x00rfkill_allocate(struct rt2x00_dev *rt2x00dev)
 {
         if (!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags))
@@ -153,14 +141,9 @@ void rt2x00rfkill_allocate(struct rt2x00_dev *rt2x00dev)
         rt2x00dev->rfkill->data = rt2x00dev;
         rt2x00dev->rfkill->state = -1;
         rt2x00dev->rfkill->toggle_radio = rt2x00rfkill_toggle_radio;
+        rt2x00dev->rfkill->get_state = rt2x00rfkill_get_state;
 
-        rt2x00dev->poll_dev = rt2x00rfkill_allocate_polldev(rt2x00dev);
-        if (!rt2x00dev->poll_dev) {
-                ERROR(rt2x00dev, "Failed to allocate polled device.\n");
-                rfkill_free(rt2x00dev->rfkill);
-                rt2x00dev->rfkill = NULL;
-                return;
-        }
+        INIT_DELAYED_WORK(&rt2x00dev->rfkill_work, rt2x00rfkill_poll);
 
         return;
 }
@@ -171,32 +154,8 @@ void rt2x00rfkill_free(struct rt2x00_dev *rt2x00dev)
             !test_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state))
                 return;
 
-        input_free_polled_device(rt2x00dev->poll_dev);
-        rt2x00dev->poll_dev = NULL;
+        cancel_delayed_work_sync(&rt2x00dev->rfkill_work);
 
         rfkill_free(rt2x00dev->rfkill);
         rt2x00dev->rfkill = NULL;
 }
-
-void rt2x00rfkill_suspend(struct rt2x00_dev *rt2x00dev)
-{
-        if (!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags) ||
-            !test_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state))
-                return;
-
-        input_free_polled_device(rt2x00dev->poll_dev);
-        rt2x00dev->poll_dev = NULL;
-}
-
-void rt2x00rfkill_resume(struct rt2x00_dev *rt2x00dev)
-{
-        if (!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags) ||
-            !test_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state))
-                return;
-
-        rt2x00dev->poll_dev = rt2x00rfkill_allocate_polldev(rt2x00dev);
-        if (!rt2x00dev->poll_dev) {
-                ERROR(rt2x00dev, "Failed to allocate polled device.\n");
-                return;
-        }
-}