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| author | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | 2008-02-16 02:17:54 -0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-02-16 00:33:59 -0500 |
| commit | d7c1d17dfed996e84212fc1ce617b2586dd70ec2 (patch) | |
| tree | 0e98a00d767c2bc9342b5a7bc941d1d20f2b4a9d /drivers/misc | |
| parent | 7526696a013f33d4926fdc080c26fe6af07ba30f (diff) | |
| download | kernel_samsung_smdk4412-d7c1d17dfed996e84212fc1ce617b2586dd70ec2.zip kernel_samsung_smdk4412-d7c1d17dfed996e84212fc1ce617b2586dd70ec2.tar.gz kernel_samsung_smdk4412-d7c1d17dfed996e84212fc1ce617b2586dd70ec2.tar.bz2 | |
ACPI: thinkpad-acpi: make the video output feature optional
The video output port control feature is not very useful on many ThinkPads
(especially when a X server is running), and lately userspace is getting
better and better at it, so it makes sense to allow users to stripe out the
thinkpad-acpi video feature from their kernels and save at least 2KB.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/Kconfig | 17 | ||||
| -rw-r--r-- | drivers/misc/thinkpad_acpi.c | 20 |
2 files changed, 30 insertions, 7 deletions
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 1abc95c..982e27b 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -258,6 +258,23 @@ config THINKPAD_ACPI_BAY If you are not sure, say Y here. +config THINKPAD_ACPI_VIDEO + bool "Video output control support" + depends on THINKPAD_ACPI + default y + ---help--- + Allows the thinkpad_acpi driver to provide an interface to control + the various video output ports. + + This feature often won't work well, depending on ThinkPad model, + display state, video output devices in use, whether there is a X + server running, phase of the moon, and the current mood of + Schroedinger's cat. If you can use X.org's RandR to control + your ThinkPad's video output ports instead of this feature, + don't think twice: do it and say N here to save some memory. + + If you are not sure, say Y here. + config THINKPAD_ACPI_HOTKEY_POLL bool "Suport NVRAM polling for hot keys" depends on THINKPAD_ACPI diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index 02f9465..4ea3866 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -301,6 +301,13 @@ TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ "HKEY", /* all others */ ); /* 570 */ +TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ + "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ + "\\_SB.PCI0.VID0", /* 770e */ + "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ + "\\_SB.PCI0.AGP.VID", /* all others */ + ); /* R30, R31 */ + /************************************************************************* * ACPI helpers @@ -2680,6 +2687,8 @@ static struct ibm_struct wan_driver_data = { * Video subdriver */ +#ifdef CONFIG_THINKPAD_ACPI_VIDEO + enum video_access_mode { TPACPI_VIDEO_NONE = 0, TPACPI_VIDEO_570, /* 570 */ @@ -2707,13 +2716,6 @@ static int video_orig_autosw; static int video_autosw_get(void); static int video_autosw_set(int enable); -TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ - "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ - "\\_SB.PCI0.VID0", /* 770e */ - "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ - "\\_SB.PCI0.AGP.VID", /* all others */ - ); /* R30, R31 */ - TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ static int __init video_init(struct ibm_init_struct *iibm) @@ -3023,6 +3025,8 @@ static struct ibm_struct video_driver_data = { .exit = video_exit, }; +#endif /* CONFIG_THINKPAD_ACPI_VIDEO */ + /************************************************************************* * Light (thinklight) subdriver */ @@ -5807,10 +5811,12 @@ static struct ibm_init_struct ibms_init[] __initdata = { .init = wan_init, .data = &wan_driver_data, }, +#ifdef CONFIG_THINKPAD_ACPI_VIDEO { .init = video_init, .data = &video_driver_data, }, +#endif { .init = light_init, .data = &light_driver_data, |