diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/samsung-laptop.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c index d1f030053176..5a5966512277 100644 --- a/drivers/platform/x86/samsung-laptop.c +++ b/drivers/platform/x86/samsung-laptop.c @@ -27,6 +27,7 @@ #include <linux/debugfs.h> #include <linux/ctype.h> #include <linux/efi.h> +#include <linux/suspend.h> #include <acpi/video.h> /* @@ -340,6 +341,8 @@ struct samsung_laptop { struct samsung_laptop_debug debug; struct samsung_quirks *quirks; + struct notifier_block pm_nb; + bool handle_backlight; bool has_stepping_quirk; @@ -348,6 +351,8 @@ struct samsung_laptop { struct samsung_quirks { bool broken_acpi_video; + bool four_kbd_backlight_levels; + bool enable_kbd_backlight; }; static struct samsung_quirks samsung_unknown = {}; @@ -356,6 +361,11 @@ static struct samsung_quirks samsung_broken_acpi_video = { .broken_acpi_video = true, }; +static struct samsung_quirks samsung_np740u3e = { + .four_kbd_backlight_levels = true, + .enable_kbd_backlight = true, +}; + static bool force; module_param(force, bool, 0); MODULE_PARM_DESC(force, @@ -1051,6 +1061,8 @@ static int __init samsung_leds_init(struct samsung_laptop *samsung) samsung->kbd_led.brightness_set = kbd_led_set; samsung->kbd_led.brightness_get = kbd_led_get; samsung->kbd_led.max_brightness = 8; + if (samsung->quirks->four_kbd_backlight_levels) + samsung->kbd_led.max_brightness = 4; ret = led_classdev_register(&samsung->platform_device->dev, &samsung->kbd_led); @@ -1414,6 +1426,19 @@ static void samsung_platform_exit(struct samsung_laptop *samsung) } } +static int samsung_pm_notification(struct notifier_block *nb, + unsigned long val, void *ptr) +{ + struct samsung_laptop *samsung; + + samsung = container_of(nb, struct samsung_laptop, pm_nb); + if (val == PM_POST_HIBERNATION && + samsung->quirks->enable_kbd_backlight) + kbd_backlight_enable(samsung); + + return 0; +} + static int __init samsung_platform_init(struct samsung_laptop *samsung) { struct platform_device *pdev; @@ -1534,6 +1559,15 @@ static struct dmi_system_id __initdata samsung_dmi_table[] = { }, .driver_data = &samsung_broken_acpi_video, }, + { + .callback = samsung_dmi_matched, + .ident = "730U3E/740U3E", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"), + }, + .driver_data = &samsung_np740u3e, + }, { }, }; MODULE_DEVICE_TABLE(dmi, samsung_dmi_table); @@ -1608,6 +1642,9 @@ static int __init samsung_init(void) if (ret) goto error_debugfs; + samsung->pm_nb.notifier_call = samsung_pm_notification; + register_pm_notifier(&samsung->pm_nb); + samsung_platform_device = samsung->platform_device; return ret; @@ -1633,6 +1670,7 @@ static void __exit samsung_exit(void) struct samsung_laptop *samsung; samsung = platform_get_drvdata(samsung_platform_device); + unregister_pm_notifier(&samsung->pm_nb); samsung_debugfs_exit(samsung); samsung_leds_exit(samsung); |