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rt2x00: Replace RFKILL with INPUT

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As discussed on linux-wireless rt2x00 does not offer a true RFKILL key,
for that reason RFKILL support should be entirely removed.

The key which is attached to the hardware should be treated as normal
input device instead. Implement input_poll_dev support to poll the device
frequently. When the key status has changed report it as a SW event.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn 2009-01-03 19:56:02 +01:00 committed by John W. Linville
parent c97c92d927
commit cca3e99861
4 changed files with 48 additions and 92 deletions
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7
drivers/net/wireless/rt2x00/Kconfig
View File

@ -97,10 +97,11 @@ config RT2X00_LIB_CRYPTO
config RT2X00_LIB_RFKILL
boolean
default y if (RT2X00_LIB=y && RFKILL=y) || (RT2X00_LIB=m && RFKILL!=n)
default y if (RT2X00_LIB=y && INPUT=y) || (RT2X00_LIB=m && INPUT!=n)
select INPUT_POLLDEV
comment "rt2x00 rfkill support disabled due to modularized RFKILL and built-in rt2x00"
depends on RT2X00_LIB=y && RFKILL=m
comment "rt2x00 rfkill support disabled due to modularized INPUT and built-in rt2x00"
depends on RT2X00_LIB=y && INPUT=m
config RT2X00_LIB_LEDS
boolean

5
drivers/net/wireless/rt2x00/rt2x00.h
View File

@ -33,6 +33,7 @@
#include <linux/leds.h>
#include <linux/mutex.h>
#include <linux/etherdevice.h>
#include <linux/input-polldev.h>
#include <net/mac80211.h>
@ -638,8 +639,8 @@ struct rt2x00_dev {
unsigned long rfkill_state;
#define RFKILL_STATE_ALLOCATED 1
#define RFKILL_STATE_REGISTERED 2
struct rfkill *rfkill;
struct delayed_work rfkill_work;
#define RFKILL_STATE_BLOCKED 3
struct input_polled_dev *rfkill_poll_dev;
#endif /* CONFIG_RT2X00_LIB_RFKILL */
/*

2
drivers/net/wireless/rt2x00/rt2x00lib.h
View File

@ -33,7 +33,7 @@
* Both the link tuner as the rfkill will be called once per second.
*/
#define LINK_TUNE_INTERVAL ( round_jiffies_relative(HZ) )
#define RFKILL_POLL_INTERVAL ( round_jiffies_relative(HZ) )
#define RFKILL_POLL_INTERVAL ( 1000 )
/*
* rt2x00_rate: Per rate device information

126
drivers/net/wireless/rt2x00/rt2x00rfkill.c
View File

@ -25,73 +25,30 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/rfkill.h>
#include "rt2x00.h"
#include "rt2x00lib.h"
static int rt2x00rfkill_toggle_radio(void *data, enum rfkill_state state)
static void rt2x00rfkill_poll(struct input_polled_dev *poll_dev)
{
struct rt2x00_dev *rt2x00dev = data;
int retval = 0;
if (unlikely(!rt2x00dev))
return 0;
/*
* Only continue if there are enabled interfaces.
*/
if (!test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags))
return 0;
if (state == RFKILL_STATE_UNBLOCKED) {
INFO(rt2x00dev, "RFKILL event: enabling radio.\n");
clear_bit(DEVICE_STATE_DISABLED_RADIO_HW, &rt2x00dev->flags);
retval = rt2x00lib_enable_radio(rt2x00dev);
} else if (state == RFKILL_STATE_SOFT_BLOCKED) {
INFO(rt2x00dev, "RFKILL event: disabling radio.\n");
set_bit(DEVICE_STATE_DISABLED_RADIO_HW, &rt2x00dev->flags);
rt2x00lib_disable_radio(rt2x00dev);
} else {
WARNING(rt2x00dev, "RFKILL event: unknown state %d.\n", state);
}
return retval;
}
static int rt2x00rfkill_get_state(void *data, enum rfkill_state *state)
{
struct rt2x00_dev *rt2x00dev = data;
/*
* 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_SOFT_BLOCKED : RFKILL_STATE_UNBLOCKED;
return 0;
}
static void rt2x00rfkill_poll(struct work_struct *work)
{
struct rt2x00_dev *rt2x00dev =
container_of(work, struct rt2x00_dev, rfkill_work.work);
enum rfkill_state state;
struct rt2x00_dev *rt2x00dev = poll_dev->private;
int state, old_state;
if (!test_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state) ||
!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags))
return;
/*
* Poll latest state and report it to rfkill who should sort
* out if the state should be toggled or not.
* Poll latest state, if the state is different then the previous state,
* we should generate an input event.
*/
if (!rt2x00rfkill_get_state(rt2x00dev, &state))
rfkill_force_state(rt2x00dev->rfkill, state);
state = !!rt2x00dev->ops->lib->rfkill_poll(rt2x00dev);
old_state = !!test_bit(RFKILL_STATE_BLOCKED, &rt2x00dev->rfkill_state);
queue_delayed_work(rt2x00dev->hw->workqueue,
&rt2x00dev->rfkill_work, RFKILL_POLL_INTERVAL);
if (old_state != state) {
input_report_switch(poll_dev->input, SW_RFKILL_ALL, state);
change_bit(RFKILL_STATE_BLOCKED, &rt2x00dev->rfkill_state);
}
}
void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev)
@ -100,8 +57,8 @@ void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev)
test_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state))
return;
if (rfkill_register(rt2x00dev->rfkill)) {
ERROR(rt2x00dev, "Failed to register rfkill handler.\n");
if (input_register_polled_device(rt2x00dev->rfkill_poll_dev)) {
ERROR(rt2x00dev, "Failed to register polled device.\n");
return;
}
@ -109,10 +66,10 @@ void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev)
/*
* Force initial poll which will detect the initial device state,
* and correctly sends the signal to the rfkill layer about this
* and correctly sends the signal to the input layer about this
* state.
*/
rt2x00rfkill_poll(&rt2x00dev->rfkill_work.work);
rt2x00rfkill_poll(rt2x00dev->rfkill_poll_dev);
}
void rt2x00rfkill_unregister(struct rt2x00_dev *rt2x00dev)
@ -121,52 +78,49 @@ void rt2x00rfkill_unregister(struct rt2x00_dev *rt2x00dev)
!test_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state))
return;
cancel_delayed_work_sync(&rt2x00dev->rfkill_work);
rfkill_unregister(rt2x00dev->rfkill);
input_unregister_polled_device(rt2x00dev->rfkill_poll_dev);
__clear_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state);
}
void rt2x00rfkill_allocate(struct rt2x00_dev *rt2x00dev)
{
struct device *dev = wiphy_dev(rt2x00dev->hw->wiphy);
struct input_polled_dev *poll_dev;
if (test_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state))
return;
rt2x00dev->rfkill = rfkill_allocate(dev, RFKILL_TYPE_WLAN);
if (!rt2x00dev->rfkill) {
ERROR(rt2x00dev, "Failed to allocate rfkill handler.\n");
poll_dev = input_allocate_polled_device();
if (!poll_dev) {
ERROR(rt2x00dev, "Failed to allocate polled device.\n");
return;
}
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_SW);
poll_dev->input->swbit[0] = BIT(SW_RFKILL_ALL);
rt2x00dev->rfkill_poll_dev = poll_dev;
__set_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state);
rt2x00dev->rfkill->name = rt2x00dev->ops->name;
rt2x00dev->rfkill->data = rt2x00dev;
rt2x00dev->rfkill->toggle_radio = rt2x00rfkill_toggle_radio;
if (test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags)) {
rt2x00dev->rfkill->get_state = rt2x00rfkill_get_state;
rt2x00dev->rfkill->state =
rt2x00dev->ops->lib->rfkill_poll(rt2x00dev) ?
RFKILL_STATE_SOFT_BLOCKED : RFKILL_STATE_UNBLOCKED;
} else {
rt2x00dev->rfkill->state = RFKILL_STATE_UNBLOCKED;
}
INIT_DELAYED_WORK(&rt2x00dev->rfkill_work, rt2x00rfkill_poll);
return;
}
void rt2x00rfkill_free(struct rt2x00_dev *rt2x00dev)
{
if (!test_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state))
if (!__test_and_clear_bit(RFKILL_STATE_ALLOCATED,
&rt2x00dev->rfkill_state))
return;
cancel_delayed_work_sync(&rt2x00dev->rfkill_work);
rfkill_free(rt2x00dev->rfkill);
rt2x00dev->rfkill = NULL;
input_free_polled_device(rt2x00dev->rfkill_poll_dev);
rt2x00dev->rfkill_poll_dev = NULL;
}