diff options
| author | Javier Achirica <jachirica@gmail.com> | 2014-03-21 00:01:18 +0100 |
|---|---|---|
| committer | Matthew Garrett <matthew.garrett@nebula.com> | 2014-04-06 18:58:12 +0200 |
| commit | 0380d4711e2a2190d56bf04ecdc3d6dd2621efd7 (patch) | |
| tree | ff84bd961d6ff0fe526160f056a61c2726b04145 /drivers/platform | |
| parent | sony-laptop: add hibernate on low battery function (diff) | |
| download | linux-0380d4711e2a2190d56bf04ecdc3d6dd2621efd7.tar.xz linux-0380d4711e2a2190d56bf04ecdc3d6dd2621efd7.zip | |
sony-laptop: adjust keyboard backlight values for off/auto/on
Keyboard backlight can be always off, use some automatic trigger
(activity and light sensor), always on.
The behaviour of the driver changes whereby previously when passed 1 it
tried to turn on backlight immediately now it does nothing. This is
however a bug fix since (a) it makes little sense to turn on the
backlight when control is automatic and (b) this behaviour is
consistent with what the windows driver does.
Signed-off-by: Javier Achirica <jachirica@gmail.com>
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/sony-laptop.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index ba39a29a9f39..48e7e5bdadbf 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -129,7 +129,8 @@ static int kbd_backlight = -1; module_param(kbd_backlight, int, 0444); MODULE_PARM_DESC(kbd_backlight, "set this to 0 to disable keyboard backlight, " - "1 to enable it (default: no change from current value)"); + "1 to enable it with automatic control and 2 to have it always " + "on (default: no change from current value)"); static int kbd_backlight_timeout = -1; module_param(kbd_backlight_timeout, int, 0444); @@ -1772,7 +1773,7 @@ static ssize_t __sony_nc_kbd_backlight_mode_set(u8 value) { int result; - if (value > 1) + if (value > 2) return -EINVAL; if (sony_call_snc_handle(kbdbl_ctl->handle, @@ -1780,8 +1781,10 @@ static ssize_t __sony_nc_kbd_backlight_mode_set(u8 value) return -EIO; /* Try to turn the light on/off immediately */ - sony_call_snc_handle(kbdbl_ctl->handle, - (value << 0x10) | (kbdbl_ctl->base + 0x100), &result); + if (value != 1) + sony_call_snc_handle(kbdbl_ctl->handle, + (value << 0x0f) | (kbdbl_ctl->base + 0x100), + &result); kbdbl_ctl->mode = value; |