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[B43]: Use input-polldev for the rfkill switch

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This removes the direct call to rfkill on an rfkill event
and replaces it with an input device. This way userspace is also
notified about the event.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Buesch 2007-09-28 14:22:33 +02:00 committed by David S. Miller
parent 8e9f7529fd
commit 42bb4cd5ae
4 changed files with 110 additions and 101 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/b43/Kconfig
View File

@ -70,7 +70,7 @@ config B43_LEDS
# RFKILL support
config B43_RFKILL
bool
depends on B43 && RFKILL
depends on B43 && RFKILL && RFKILL_INPUT && INPUT_POLLDEV
default y
config B43_DEBUG

47
drivers/net/wireless/b43/main.c
View File

@ -2143,21 +2143,6 @@ static void b43_mgmtframe_txantenna(struct b43_wldev *dev, int antenna)
b43_shm_write16(dev, B43_SHM_SHARED, B43_SHM_SH_PRPHYCTL, tmp);
}
/* Returns TRUE, if the radio is enabled in hardware. */
static bool b43_is_hw_radio_enabled(struct b43_wldev *dev)
{
if (dev->phy.rev >= 3) {
if (!(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)
& B43_MMIO_RADIO_HWENABLED_HI_MASK))
return 1;
} else {
if (b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO)
& B43_MMIO_RADIO_HWENABLED_LO_MASK)
return 1;
}
return 0;
}
/* This is the opposite of b43_chip_init() */
static void b43_chip_exit(struct b43_wldev *dev)
{
@ -2350,32 +2335,18 @@ static void b43_periodic_every15sec(struct b43_wldev *dev)
//TODO for APHY (temperature?)
}
static void b43_periodic_every1sec(struct b43_wldev *dev)
{
bool radio_hw_enable;
/* check if radio hardware enabled status changed */
radio_hw_enable = b43_is_hw_radio_enabled(dev);
if (unlikely(dev->radio_hw_enable != radio_hw_enable)) {
dev->radio_hw_enable = radio_hw_enable;
b43_rfkill_toggled(dev, radio_hw_enable);
}
}
static void do_periodic_work(struct b43_wldev *dev)
{
unsigned int state;
state = dev->periodic_state;
if (state % 120 == 0)
if (state % 8 == 0)
b43_periodic_every120sec(dev);
if (state % 60 == 0)
if (state % 4 == 0)
b43_periodic_every60sec(dev);
if (state % 30 == 0)
if (state % 2 == 0)
b43_periodic_every30sec(dev);
if (state % 15 == 0)
b43_periodic_every15sec(dev);
b43_periodic_every1sec(dev);
}
/* Estimate a "Badness" value based on the periodic work
@ -2386,13 +2357,11 @@ static int estimate_periodic_work_badness(unsigned int state)
{
int badness = 0;
if (state % 120 == 0) /* every 120 sec */
if (state % 8 == 0) /* every 120 sec */
badness += 10;
if (state % 60 == 0) /* every 60 sec */
if (state % 4 == 0) /* every 60 sec */
badness += 5;
if (state % 30 == 0) /* every 30 sec */
badness += 1;
if (state % 15 == 0) /* every 15 sec */
if (state % 2 == 0) /* every 30 sec */
badness += 1;
#define BADNESS_LIMIT 4
@ -2447,7 +2416,7 @@ static void b43_periodic_work_handler(struct work_struct *work)
if (b43_debug(dev, B43_DBG_PWORK_FAST))
delay = msecs_to_jiffies(50);
else
delay = round_jiffies(HZ);
delay = round_jiffies(HZ * 15);
queue_delayed_work(dev->wl->hw->workqueue, &dev->periodic_work, delay);
out:
mutex_unlock(&dev->wl->mutex);
@ -3720,6 +3689,7 @@ static int b43_setup_modes(struct b43_wldev *dev,
static void b43_wireless_core_detach(struct b43_wldev *dev)
{
b43_rfkill_free(dev);
/* We release firmware that late to not be required to re-request
* is all the time when we reinit the core. */
b43_release_firmware(dev);
@ -3805,6 +3775,7 @@ static int b43_wireless_core_attach(struct b43_wldev *dev)
if (!wl->current_dev)
wl->current_dev = dev;
INIT_WORK(&dev->restart_work, b43_chip_reset);
b43_rfkill_alloc(dev);
b43_radio_turn_off(dev, 1);
b43_switch_analog(dev, 0);

141
drivers/net/wireless/b43/rfkill.c
View File

@ -26,46 +26,39 @@
#include "b43.h"
static void b43_notify_rfkill_press(struct work_struct *work)
/* Returns TRUE, if the radio is enabled in hardware. */
static bool b43_is_hw_radio_enabled(struct b43_wldev *dev)
{
struct b43_rfkill *rfk = container_of(work, struct b43_rfkill,
notify_work);
struct b43_wl *wl = container_of(rfk, struct b43_wl, rfkill);
struct b43_wldev *dev;
enum rfkill_state state;
if (dev->phy.rev >= 3) {
if (!(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)
& B43_MMIO_RADIO_HWENABLED_HI_MASK))
return 1;
} else {
if (b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO)
& B43_MMIO_RADIO_HWENABLED_LO_MASK)
return 1;
}
return 0;
}
/* The poll callback for the hardware button. */
static void b43_rfkill_poll(struct input_polled_dev *poll_dev)
{
struct b43_wldev *dev = poll_dev->private;
struct b43_wl *wl = dev->wl;
bool enabled;
mutex_lock(&wl->mutex);
dev = wl->current_dev;
if (b43_status(dev) < B43_STAT_INITIALIZED) {
mutex_unlock(&wl->mutex);
return;
}
if (dev->radio_hw_enable)
state = RFKILL_STATE_ON;
else
state = RFKILL_STATE_OFF;
b43info(wl, "Radio hardware status changed to %s\n",
dev->radio_hw_enable ? "ENABLED" : "DISABLED");
mutex_unlock(&wl->mutex);
if (rfk->rfkill) {
/* Be careful. This calls back into the software toggle routines.
* So we must unlock before calling. */
rfkill_switch_all(rfk->rfkill->type, state);
}
}
/* Called when the RFKILL toggled in hardware.
* This is called with the mutex locked. */
void b43_rfkill_toggled(struct b43_wldev *dev, bool on)
{
struct b43_wl *wl = dev->wl;
B43_WARN_ON(b43_status(dev) < B43_STAT_INITIALIZED);
/* Update the RF status asynchronously, as rfkill will
* call back into the software toggle handler.
* This would deadlock if done synchronously. */
queue_work(wl->hw->workqueue, &wl->rfkill.notify_work);
enabled = b43_is_hw_radio_enabled(dev);
if (unlikely(enabled != dev->radio_hw_enable)) {
dev->radio_hw_enable = enabled;
b43info(wl, "Radio hardware status changed to %s\n",
enabled ? "ENABLED" : "DISABLED");
mutex_unlock(&wl->mutex);
input_report_key(poll_dev->input, KEY_WLAN, enabled);
} else
mutex_unlock(&wl->mutex);
}
/* Called when the RFKILL toggled in software.
@ -118,38 +111,74 @@ void b43_rfkill_init(struct b43_wldev *dev)
struct b43_rfkill *rfk = &(wl->rfkill);
int err;
snprintf(rfk->name, sizeof(rfk->name),
"b43-%s", wiphy_name(wl->hw->wiphy));
rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN);
if (!rfk->rfkill)
goto error;
rfk->rfkill->name = rfk->name;
rfk->rfkill->state = RFKILL_STATE_ON;
rfk->rfkill->data = dev;
rfk->rfkill->toggle_radio = b43_rfkill_soft_toggle;
rfk->rfkill->user_claim_unsupported = 1;
INIT_WORK(&rfk->notify_work, b43_notify_rfkill_press);
if (rfk->rfkill) {
err = rfkill_register(rfk->rfkill);
if (err)
goto error;
if (err) {
b43warn(wl, "Failed to register RF-kill button\n");
goto err_free_rfk;
}
}
if (rfk->poll_dev) {
err = input_register_polled_device(rfk->poll_dev);
if (err) {
b43warn(wl, "Failed to register RF-kill polldev\n");
goto err_free_polldev;
}
}
return;
error:
b43warn(dev->wl, "Failed to initialize the RF-kill button\n");
err_free_rfk:
rfkill_free(rfk->rfkill);
rfk->rfkill = NULL;
err_free_polldev:
input_free_polled_device(rfk->poll_dev);
rfk->poll_dev = NULL;
}
void b43_rfkill_exit(struct b43_wldev *dev)
{
struct b43_rfkill *rfk = &(dev->wl->rfkill);
if (!rfk->rfkill)
return;
cancel_work_sync(&rfk->notify_work);
if (rfk->poll_dev)
input_unregister_polled_device(rfk->poll_dev);
if (rfk->rfkill)
rfkill_unregister(rfk->rfkill);
}
void b43_rfkill_alloc(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
struct b43_rfkill *rfk = &(wl->rfkill);
snprintf(rfk->name, sizeof(rfk->name),
"b43-%s", wiphy_name(wl->hw->wiphy));
rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN);
if (!rfk->rfkill) {
b43warn(wl, "Failed to allocate RF-kill button\n");
return;
}
rfk->rfkill->name = rfk->name;
rfk->rfkill->state = RFKILL_STATE_ON;
rfk->rfkill->data = dev;
rfk->rfkill->toggle_radio = b43_rfkill_soft_toggle;
rfk->rfkill->user_claim_unsupported = 1;
rfk->poll_dev = input_allocate_polled_device();
if (rfk->poll_dev) {
rfk->poll_dev->private = dev;
rfk->poll_dev->poll = b43_rfkill_poll;
rfk->poll_dev->poll_interval = 1000; /* msecs */
} else
b43warn(wl, "Failed to allocate RF-kill polldev\n");
}
void b43_rfkill_free(struct b43_wldev *dev)
{
struct b43_rfkill *rfk = &(dev->wl->rfkill);
input_free_polled_device(rfk->poll_dev);
rfk->poll_dev = NULL;
rfkill_free(rfk->rfkill);
rfk->rfkill = NULL;
}

21
drivers/net/wireless/b43/rfkill.h
View File

@ -7,19 +7,25 @@ struct b43_wldev;
#ifdef CONFIG_B43_RFKILL
#include <linux/rfkill.h>
#include <linux/input-polldev.h>
struct b43_rfkill {
/* The RFKILL subsystem data structure */
struct rfkill *rfkill;
/* The poll device for the RFKILL input button */
struct input_polled_dev *poll_dev;
/* The unique name of this rfkill switch */
char name[32];
/* Workqueue for asynchronous notification. */
struct work_struct notify_work;
};
/* All the init functions return void, because we are not interested
* in failing the b43 init process when rfkill init failed. */
void b43_rfkill_alloc(struct b43_wldev *dev);
void b43_rfkill_free(struct b43_wldev *dev);
void b43_rfkill_init(struct b43_wldev *dev);
void b43_rfkill_exit(struct b43_wldev *dev);
void b43_rfkill_toggled(struct b43_wldev *dev, bool on);
char * b43_rfkill_led_name(struct b43_wldev *dev);
@ -30,15 +36,18 @@ struct b43_rfkill {
/* empty */
};
static inline void b43_rfkill_alloc(struct b43_wldev *dev)
{
}
static inline void b43_rfkill_free(struct b43_wldev *dev)
{
}
static inline void b43_rfkill_init(struct b43_wldev *dev)
{
}
static inline void b43_rfkill_exit(struct b43_wldev *dev)
{
}
static inline void b43_rfkill_toggled(struct b43_wldev *dev, bool on)
{
}
static inline char * b43_rfkill_led_name(struct b43_wldev *dev)
{
return NULL;