diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00rfkill.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00rfkill.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00rfkill.c b/drivers/net/wireless/rt2x00/rt2x00rfkill.c new file mode 100644 index 000000000000..a0f8b8e0a24b --- /dev/null +++ b/drivers/net/wireless/rt2x00/rt2x00rfkill.c @@ -0,0 +1,146 @@ +/* + Copyright (C) 2004 - 2007 rt2x00 SourceForge Project + <http://rt2x00.serialmonkey.com> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the + Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/* + Module: rt2x00rfkill + Abstract: rt2x00 rfkill routines. + */ + +/* + * Set enviroment defines for rt2x00.h + */ +#define DRV_NAME "rt2x00lib" + +#include <linux/input-polldev.h> +#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) +{ + struct rt2x00_dev *rt2x00dev = data; + int retval = 0; + + if (unlikely(!rt2x00dev)) + return 0; + + /* + * Only continue if there are enabled interfaces. + */ + if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags)) + return 0; + + if (state == RFKILL_STATE_ON) { + INFO(rt2x00dev, "Hardware button pressed, enabling radio.\n"); + __clear_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags); + retval = rt2x00lib_enable_radio(rt2x00dev); + } else if (state == RFKILL_STATE_OFF) { + INFO(rt2x00dev, "Hardware button pressed, disabling radio.\n"); + __set_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags); + rt2x00lib_disable_radio(rt2x00dev); + } + + return retval; +} + +static void rt2x00rfkill_poll(struct input_polled_dev *poll_dev) +{ + struct rt2x00_dev *rt2x00dev = poll_dev->private; + int state = rt2x00dev->ops->lib->rfkill_poll(rt2x00dev); + + if (rt2x00dev->rfkill->state != state) + input_report_key(poll_dev->input, KEY_WLAN, 1); +} + +int rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev) +{ + int retval; + + if (!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags)) + return 0; + + retval = rfkill_register(rt2x00dev->rfkill); + if (retval) { + ERROR(rt2x00dev, "Failed to register rfkill handler.\n"); + return retval; + } + + retval = input_register_polled_device(rt2x00dev->poll_dev); + if (retval) { + ERROR(rt2x00dev, "Failed to register polled device.\n"); + rfkill_unregister(rt2x00dev->rfkill); + return retval; + } + + return 0; +} + +void rt2x00rfkill_unregister(struct rt2x00_dev *rt2x00dev) +{ + if (!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags)) + return; + + input_unregister_polled_device(rt2x00dev->poll_dev); + rfkill_unregister(rt2x00dev->rfkill); +} + +int rt2x00rfkill_allocate(struct rt2x00_dev *rt2x00dev) +{ + struct device *device = wiphy_dev(rt2x00dev->hw->wiphy); + + if (!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags)) + return 0; + + rt2x00dev->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN); + if (!rt2x00dev->rfkill) { + ERROR(rt2x00dev, "Failed to allocate rfkill handler.\n"); + return -ENOMEM; + } + + rt2x00dev->rfkill->name = rt2x00dev->ops->name; + rt2x00dev->rfkill->data = rt2x00dev; + rt2x00dev->rfkill->state = rt2x00dev->ops->lib->rfkill_poll(rt2x00dev); + rt2x00dev->rfkill->toggle_radio = rt2x00rfkill_toggle_radio; + + rt2x00dev->poll_dev = input_allocate_polled_device(); + if (!rt2x00dev->poll_dev) { + ERROR(rt2x00dev, "Failed to allocate polled device.\n"); + rfkill_free(rt2x00dev->rfkill); + return -ENOMEM; + } + + rt2x00dev->poll_dev->private = rt2x00dev; + rt2x00dev->poll_dev->poll = rt2x00rfkill_poll; + rt2x00dev->poll_dev->poll_interval = RFKILL_POLL_INTERVAL; + + return 0; +} + +void rt2x00rfkill_free(struct rt2x00_dev *rt2x00dev) +{ + if (!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags)) + return; + + input_free_polled_device(rt2x00dev->poll_dev); + rfkill_free(rt2x00dev->rfkill); +} |