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authorThomas Renninger <trenn@suse.de>2008-08-01 11:38:03 -0400
committerLen Brown <len.brown@intel.com>2008-11-08 00:46:07 -0500
commit2dba1b5d87e08a294da5cdfa4d32908000e9b085 (patch)
tree7669e3ae3ccb1ebff9e321f9e135197562ea1000 /drivers
parent540b8bb9c33935183ceb5bed466a42ad72b2af56 (diff)
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')
-rw-r--r--drivers/misc/thinkpad_acpi.c29
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)
4932 */ 4932 */
4933 b = tpacpi_check_std_acpi_brightness_support(); 4933 b = tpacpi_check_std_acpi_brightness_support();
4934 if (b > 0) { 4934 if (b > 0) {
4935 if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { 4935
4936 printk(TPACPI_NOTICE 4936 if (acpi_video_backlight_support()) {
4937 "Lenovo BIOS switched to ACPI backlight " 4937 if (brightness_enable > 1) {
4938 "control mode\n"); 4938 printk(TPACPI_NOTICE
4939 } 4939 "Standard ACPI backlight interface "
4940 if (brightness_enable > 1) { 4940 "available, not loading native one.\n");
4941 printk(TPACPI_NOTICE 4941 return 1;
4942 "standard ACPI backlight interface " 4942 } else if (brightness_enable == 1) {
4943 "available, not loading native one...\n"); 4943 printk(TPACPI_NOTICE
4944 return 1; 4944 "Backlight control force enabled, even if standard "
4945 "ACPI backlight interface is available\n");
4946 }
4947 } else {
4948 if (brightness_enable > 1) {
4949 printk(TPACPI_NOTICE
4950 "Standard ACPI backlight interface not "
4951 "available, thinkpad_acpi native "
4952 "brightness control enabled\n");
4953 }
4945 } 4954 }
4946 } 4955 }
4947 4956