diff options
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 f526e735c5a..6848f213eb5 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 3780994dc8f..9d7e0be6bb0 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(); } |