#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/rfkill.h>
+#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/miscdevice.h>
#include <linux/wait.h>
u32 idx;
bool registered;
- bool suspended;
+ bool persistent;
const struct rfkill_ops *ops;
void *data;
"Default initial state for all radio types, 0 = radio off");
static struct {
- bool cur, def;
+ bool cur, sav;
} rfkill_global_states[NUM_RFKILL_TYPES];
-static unsigned long rfkill_states_default_locked;
-
static bool rfkill_epo_lock_active;
static void rfkill_event(struct rfkill *rfkill)
{
- if (!rfkill->registered || rfkill->suspended)
+ if (!rfkill->registered)
return;
kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE);
unsigned long flags;
int err;
+ if (unlikely(rfkill->dev.power.power_state.event & PM_EVENT_SLEEP))
+ return;
+
/*
* Some platforms (...!) generate input events which affect the
* _hard_ kill state -- whenever something tries to change the
rfkill->state |= RFKILL_BLOCK_SW_SETCALL;
spin_unlock_irqrestore(&rfkill->lock, flags);
- if (unlikely(rfkill->dev.power.power_state.event & PM_EVENT_SLEEP))
- return;
-
err = rfkill->ops->set_block(rfkill->data, blocked);
spin_lock_irqsave(&rfkill->lock, flags);
rfkill_set_block(rfkill, true);
for (i = 0; i < NUM_RFKILL_TYPES; i++) {
- rfkill_global_states[i].def = rfkill_global_states[i].cur;
+ rfkill_global_states[i].sav = rfkill_global_states[i].cur;
rfkill_global_states[i].cur = true;
}
rfkill_epo_lock_active = false;
for (i = 0; i < NUM_RFKILL_TYPES; i++)
- __rfkill_switch_all(i, rfkill_global_states[i].def);
+ __rfkill_switch_all(i, rfkill_global_states[i].sav);
mutex_unlock(&rfkill_global_mutex);
}
}
#endif
-void rfkill_set_global_sw_state(const enum rfkill_type type, bool blocked)
-{
- BUG_ON(type == RFKILL_TYPE_ALL);
-
- mutex_lock(&rfkill_global_mutex);
-
- /* don't allow unblock when epo */
- if (rfkill_epo_lock_active && !blocked)
- goto out;
-
- /* too late */
- if (rfkill_states_default_locked & BIT(type))
- goto out;
-
- rfkill_states_default_locked |= BIT(type);
-
- rfkill_global_states[type].cur = blocked;
- rfkill_global_states[type].def = blocked;
- out:
- mutex_unlock(&rfkill_global_mutex);
-}
-EXPORT_SYMBOL(rfkill_set_global_sw_state);
-
bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked)
{
}
EXPORT_SYMBOL(rfkill_set_sw_state);
+void rfkill_init_sw_state(struct rfkill *rfkill, bool blocked)
+{
+ unsigned long flags;
+
+ BUG_ON(!rfkill);
+ BUG_ON(rfkill->registered);
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ __rfkill_set_sw_state(rfkill, blocked);
+ rfkill->persistent = true;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+}
+EXPORT_SYMBOL(rfkill_init_sw_state);
+
void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
{
unsigned long flags;
swprev = !!(rfkill->state & RFKILL_BLOCK_SW);
hwprev = !!(rfkill->state & RFKILL_BLOCK_HW);
__rfkill_set_sw_state(rfkill, sw);
+ if (hw)
+ rfkill->state |= RFKILL_BLOCK_HW;
+ else
+ rfkill->state &= ~RFKILL_BLOCK_HW;
spin_unlock_irqrestore(&rfkill->lock, flags);
- if (!rfkill->registered)
- return;
-
- if (swprev != sw || hwprev != hw)
- schedule_work(&rfkill->uevent_work);
+ if (!rfkill->registered) {
+ rfkill->persistent = true;
+ } else {
+ if (swprev != sw || hwprev != hw)
+ schedule_work(&rfkill->uevent_work);
- rfkill_led_trigger_event(rfkill);
+ rfkill_led_trigger_event(rfkill);
+ }
}
EXPORT_SYMBOL(rfkill_set_states);
static const char *rfkill_get_type_str(enum rfkill_type type)
{
+ BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_FM + 1);
+
switch (type) {
case RFKILL_TYPE_WLAN:
return "wlan";
return "wimax";
case RFKILL_TYPE_WWAN:
return "wwan";
+ case RFKILL_TYPE_GPS:
+ return "gps";
+ case RFKILL_TYPE_FM:
+ return "fm";
default:
BUG();
}
-
- BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_WWAN + 1);
}
static ssize_t rfkill_type_show(struct device *dev,
return sprintf(buf, "%d\n", rfkill->idx);
}
+static ssize_t rfkill_persistent_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+
+ return sprintf(buf, "%d\n", rfkill->persistent);
+}
+
static u8 user_state_from_blocked(unsigned long state)
{
if (state & RFKILL_BLOCK_HW)
struct device_attribute *attr,
const char *buf, size_t count)
{
- /*
- * The intention was that userspace can only take control over
- * a given device when/if rfkill-input doesn't control it due
- * to user_claim. Since user_claim is currently unsupported,
- * we never support changing the state from userspace -- this
- * can be implemented again later.
- */
+ struct rfkill *rfkill = to_rfkill(dev);
+ unsigned long state;
+ int err;
- return -EPERM;
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ err = strict_strtoul(buf, 0, &state);
+ if (err)
+ return err;
+
+ if (state != RFKILL_USER_STATE_SOFT_BLOCKED &&
+ state != RFKILL_USER_STATE_UNBLOCKED)
+ return -EINVAL;
+
+ mutex_lock(&rfkill_global_mutex);
+ rfkill_set_block(rfkill, state == RFKILL_USER_STATE_SOFT_BLOCKED);
+ mutex_unlock(&rfkill_global_mutex);
+
+ return err ?: count;
}
static ssize_t rfkill_claim_show(struct device *dev,
__ATTR(name, S_IRUGO, rfkill_name_show, NULL),
__ATTR(type, S_IRUGO, rfkill_type_show, NULL),
__ATTR(index, S_IRUGO, rfkill_idx_show, NULL),
+ __ATTR(persistent, S_IRUGO, rfkill_persistent_show, NULL),
__ATTR(state, S_IRUGO|S_IWUSR, rfkill_state_show, rfkill_state_store),
__ATTR(claim, S_IRUGO|S_IWUSR, rfkill_claim_show, rfkill_claim_store),
__ATTR_NULL
rfkill_pause_polling(rfkill);
- rfkill->suspended = true;
-
return 0;
}
struct rfkill *rfkill = to_rfkill(dev);
bool cur;
- mutex_lock(&rfkill_global_mutex);
- cur = rfkill_global_states[rfkill->type].cur;
- rfkill_set_block(rfkill, cur);
- mutex_unlock(&rfkill_global_mutex);
-
- rfkill->suspended = false;
-
- schedule_work(&rfkill->uevent_work);
+ if (!rfkill->persistent) {
+ cur = !!(rfkill->state & RFKILL_BLOCK_SW);
+ rfkill_set_block(rfkill, cur);
+ }
rfkill_resume_polling(rfkill);
dev_set_name(dev, "rfkill%lu", rfkill_no);
rfkill_no++;
- if (!(rfkill_states_default_locked & BIT(rfkill->type))) {
- /* first of its kind */
- BUILD_BUG_ON(NUM_RFKILL_TYPES >
- sizeof(rfkill_states_default_locked) * 8);
- rfkill_states_default_locked |= BIT(rfkill->type);
- rfkill_global_states[rfkill->type].cur =
- rfkill_global_states[rfkill->type].def;
- }
-
list_add_tail(&rfkill->node, &rfkill_list);
error = device_add(dev);
if (rfkill->ops->poll)
schedule_delayed_work(&rfkill->poll_work,
round_jiffies_relative(POLL_INTERVAL));
- schedule_work(&rfkill->sync_work);
+
+ if (!rfkill->persistent || rfkill_epo_lock_active) {
+ schedule_work(&rfkill->sync_work);
+ } else {
+#ifdef CONFIG_RFKILL_INPUT
+ bool soft_blocked = !!(rfkill->state & RFKILL_BLOCK_SW);
+
+ if (!atomic_read(&rfkill_input_disabled))
+ __rfkill_switch_all(rfkill->type, soft_blocked);
+#endif
+ }
rfkill_send_events(rfkill, RFKILL_OP_ADD);
struct rfkill_event ev;
/* we don't need the 'hard' variable but accept it */
- if (count < sizeof(ev) - 1)
+ if (count < RFKILL_EVENT_SIZE_V1 - 1)
return -EINVAL;
- if (copy_from_user(&ev, buf, sizeof(ev) - 1))
+ /*
+ * Copy as much data as we can accept into our 'ev' buffer,
+ * but tell userspace how much we've copied so it can determine
+ * our API version even in a write() call, if it cares.
+ */
+ count = min(count, sizeof(ev));
+ if (copy_from_user(&ev, buf, count))
return -EFAULT;
if (ev.op != RFKILL_OP_CHANGE && ev.op != RFKILL_OP_CHANGE_ALL)
#endif
static const struct file_operations rfkill_fops = {
+ .owner = THIS_MODULE,
.open = rfkill_fop_open,
.read = rfkill_fop_read,
.write = rfkill_fop_write,
int i;
for (i = 0; i < NUM_RFKILL_TYPES; i++)
- rfkill_global_states[i].def = !rfkill_default_state;
+ rfkill_global_states[i].cur = !rfkill_default_state;
error = class_register(&rfkill_class);
if (error)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff