diff options
| author | Thomas Renninger <trenn@suse.de> | 2008-08-01 17:38:03 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-11-08 00:46:07 -0500 |
| commit | 2dba1b5d87e08a294da5cdfa4d32908000e9b085 (patch) | |
| tree | 7669e3ae3ccb1ebff9e321f9e135197562ea1000 /drivers/misc/thinkpad_acpi.c | |
| parent | 540b8bb9c33935183ceb5bed466a42ad72b2af56 (diff) | |
| download | lwn-2dba1b5d87e08a294da5cdfa4d32908000e9b085.tar.gz lwn-2dba1b5d87e08a294da5cdfa4d32908000e9b085.zip | |
thinkpad_acpi: fingers off backlight if video.ko is serving this functionality
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/misc/thinkpad_acpi.c')
| -rw-r--r-- | drivers/misc/thinkpad_acpi.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index 4db1cf9078d9..7a4a26b0edd2 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -4932,16 +4932,25 @@ static int __init brightness_init(struct ibm_init_struct *iibm) */ b = tpacpi_check_std_acpi_brightness_support(); if (b > 0) { - if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { - printk(TPACPI_NOTICE - "Lenovo BIOS switched to ACPI backlight " - "control mode\n"); - } - if (brightness_enable > 1) { - printk(TPACPI_NOTICE - "standard ACPI backlight interface " - "available, not loading native one...\n"); - return 1; + + if (acpi_video_backlight_support()) { + if (brightness_enable > 1) { + printk(TPACPI_NOTICE + "Standard ACPI backlight interface " + "available, not loading native one.\n"); + return 1; + } else if (brightness_enable == 1) { + printk(TPACPI_NOTICE + "Backlight control force enabled, even if standard " + "ACPI backlight interface is available\n"); + } + } else { + if (brightness_enable > 1) { + printk(TPACPI_NOTICE + "Standard ACPI backlight interface not " + "available, thinkpad_acpi native " + "brightness control enabled\n"); + } } } |