diff options
| author | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | 2010-08-10 06:48:19 +0400 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2010-08-16 19:54:50 +0400 |
| commit | 217f09631a420295a9688e18aa4dbad1b385e56c (patch) | |
| tree | 4b3f7890f28abad25c1bf3ff2b4b60499c06765d /drivers | |
| parent | 122f26726b5e16174bf8a707df14be1d93c49d62 (diff) | |
| download | linux-217f09631a420295a9688e18aa4dbad1b385e56c.tar.xz | |
thinkpad-acpi: untangle ACPI/vendor backlight selection
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 9d6fc4c7c08e..b9430e887e95 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -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 |