GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-23 15:27:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

thinkpad-acpi: untangle ACPI/vendor backlight selection

Browse source 
acpi_video_backlight_support() already tells us if ACPI is handling
backlight control through the generic ACPI handle.  It is better to just
trust it.

While at it, adjust down a printk priority, and test earlier for
brightness_enable=0.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Henrique de Moraes Holschuh 2010-08-09 23:48:19 -03:00 • committed by Matthew Garrett
parent 122f26726b
commit 217f09631a
2 changed files with 24 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

42
drivers/platform/x86/thinkpad_acpi.c
View file

@ -6216,28 +6216,6 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
if (tp_features.bright_unkfw)
return 1;
if (tp_features.bright_acpimode) {
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");
}
}
}
if (!brightness_enable) {
dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT,
"brightness support disabled by "
@ -6245,6 +6223,26 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
return 1;
}
if (acpi_video_backlight_support()) {
if (brightness_enable > 1) {
printk(TPACPI_INFO
"Standard ACPI backlight interface "
"available, not loading native one.\n");
return 1;
} else if (brightness_enable == 1) {
printk(TPACPI_WARN
"Cannot enable backlight brightness support, "
"ACPI is already handling it. Refer to the "
"acpi_backlight kernel parameter\n");
return 1;
}
} else if (tp_features.bright_acpimode && brightness_enable > 1) {
printk(TPACPI_NOTICE
"Standard ACPI backlight interface not "
"available, thinkpad_acpi native "
"brightness control enabled\n");
}
/*
* Check for module parameter bogosity, note that we
* init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be