diff options
author | Matthew Garrett <mjg@redhat.com> | 2009-12-09 18:23:36 +0000 |
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committer | Matthew Garrett <mjg@redhat.com> | 2010-02-25 11:50:42 -0500 |
commit | 814cb8adbe2fb49302ac65bc31fa749143823860 (patch) | |
tree | 25309aa3682c52926c60470994240cdfb43a08e2 /drivers/platform | |
parent | 493e91433e966a50964e221db92756eeb90dd54e (diff) | |
download | linux-stable-814cb8adbe2fb49302ac65bc31fa749143823860.tar.gz linux-stable-814cb8adbe2fb49302ac65bc31fa749143823860.tar.bz2 linux-stable-814cb8adbe2fb49302ac65bc31fa749143823860.zip |
dell-laptop: Update rfkill state on kill switch
The rfkill interface on Dells only sends a notification that the switch
has been changed via the keyboard controller. Add a filter so we can
pick these notifications up and update the rfkill state appropriately.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r-- | drivers/platform/x86/Kconfig | 1 | ||||
-rw-r--r-- | drivers/platform/x86/dell-laptop.c | 48 |
2 files changed, 49 insertions, 0 deletions
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index f526e735c5ab..6848f213eb53 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -79,6 +79,7 @@ config DELL_LAPTOP depends on BACKLIGHT_CLASS_DEVICE depends on RFKILL || RFKILL = n depends on POWER_SUPPLY + depends on SERIO_I8042 default n ---help--- This driver adds support for rfkill and backlight control to Dell diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index 3780994dc8f2..9d7e0be6bb0f 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -22,6 +22,7 @@ #include <linux/rfkill.h> #include <linux/power_supply.h> #include <linux/acpi.h> +#include <linux/i8042.h> #include "../../firmware/dcdbas.h" #define BRIGHTNESS_TOKEN 0x7d @@ -214,6 +215,18 @@ static const struct rfkill_ops dell_rfkill_ops = { .query = dell_rfkill_query, }; +static void dell_update_rfkill(struct work_struct *ignored) +{ + if (wifi_rfkill) + dell_rfkill_query(wifi_rfkill, (void *)1); + if (bluetooth_rfkill) + dell_rfkill_query(bluetooth_rfkill, (void *)2); + if (wwan_rfkill) + dell_rfkill_query(wwan_rfkill, (void *)3); +} +static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill); + + static int __init dell_setup_rfkill(void) { struct calling_interface_buffer buffer; @@ -338,6 +351,30 @@ static struct backlight_ops dell_ops = { .update_status = dell_send_intensity, }; +bool dell_laptop_i8042_filter(unsigned char data, unsigned char str, + struct serio *port) +{ + static bool extended; + + if (str & 0x20) + return false; + + if (unlikely(data == 0xe0)) { + extended = true; + return false; + } else if (unlikely(extended)) { + switch (data) { + case 0x8: + schedule_delayed_work(&dell_rfkill_work, + round_jiffies_relative(HZ)); + break; + } + extended = false; + } + + return false; +} + static int __init dell_init(void) { struct calling_interface_buffer buffer; @@ -373,6 +410,13 @@ static int __init dell_init(void) goto fail_rfkill; } + ret = i8042_install_filter(dell_laptop_i8042_filter); + if (ret) { + printk(KERN_WARNING + "dell-laptop: Unable to install key filter\n"); + goto fail_filter; + } + #ifdef CONFIG_ACPI /* In the event of an ACPI backlight being available, don't * register the platform controller. @@ -410,6 +454,8 @@ static int __init dell_init(void) return 0; fail_backlight: + i8042_remove_filter(dell_laptop_i8042_filter); +fail_filter: dell_cleanup_rfkill(); fail_rfkill: platform_device_del(platform_device); @@ -424,6 +470,8 @@ fail_platform_driver: static void __exit dell_exit(void) { + cancel_delayed_work_sync(&dell_rfkill_work); + i8042_remove_filter(dell_laptop_i8042_filter); backlight_device_unregister(dell_backlight_device); dell_cleanup_rfkill(); } |