diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-08-19 15:05:00 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-08-19 15:05:00 -0700 |
| commit | 646bbdc4b6a7b887ee8f0e51fdff5d07c4586329 (patch) | |
| tree | 37ef374e2d197ba66a9f5a35d3e068cb621f55c2 | |
| parent | 7a1cc48276f974d04e1c5ef7c92d98fe5ae9d4fa (diff) | |
Add quirk for pre-915s with working PFIT regs
The regs are undocumented, but on some machines they work fine, so add this
quirk to indicate it.
| -rw-r--r-- | src/i830.h | 1 | ||||
| -rw-r--r-- | src/i830_lvds.c | 4 | ||||
| -rw-r--r-- | src/i830_quirks.c | 11 |
3 files changed, 14 insertions, 2 deletions
@@ -970,6 +970,7 @@ extern const int I830CopyROP[16]; #define QUIRK_PIPEA_FORCE 0x00000008 #define QUIRK_IVCH_NEED_DVOB 0x00000010 #define QUIRK_RESET_MODES 0x00000020 +#define QUIRK_PFIT_SAFE 0x00000040 extern void i830_fixup_devices(ScrnInfoPtr); #endif /* _I830_H_ */ diff --git a/src/i830_lvds.c b/src/i830_lvds.c index e5feab09..801261a1 100644 --- a/src/i830_lvds.c +++ b/src/i830_lvds.c @@ -999,8 +999,8 @@ i830_lvds_create_resources(xf86OutputPtr output) * Panel fitting control */ - /* XXX Disable panel fitting setting on pre-915. */ - if (!IS_I9XX(pI830)) + /* Disable panel fitting setting on untested pre-915 chips */ + if (!IS_I9XX(pI830) && !(pI830->quirk_flag & QUIRK_PFIT_SAFE)) return; panel_fitting_atom = MakeAtom(PANEL_FITTING_NAME, diff --git a/src/i830_quirks.c b/src/i830_quirks.c index a3ed0440..038676e0 100644 --- a/src/i830_quirks.c +++ b/src/i830_quirks.c @@ -162,6 +162,15 @@ static void i830_dmi_dump(void) } /* + * Old chips have undocumented panel fitting registers. Some of them actually + * work; this quirk indicates that. + */ +static void quirk_pfit_safe (I830Ptr pI830) +{ + pI830->quirk_flag |= QUIRK_PFIT_SAFE; +} + +/* * Some machines hose the display regs regardless of the ACPI DOS * setting, so we need to reset modes at ACPI event time. */ @@ -293,6 +302,8 @@ static i830_quirk i830_quirk_list[] = { /* HP Pavilion ze4944ea needs pipe A force quirk (See LP: #242389) */ { PCI_CHIP_I855_GM, 0x103c, 0x3084, quirk_pipea_force }, + { PCI_CHIP_I855_GM, 0x161f, 0x2030, quirk_pfit_safe }, + /* ThinkPad X40 needs pipe A force quirk */ { PCI_CHIP_I855_GM, 0x1014, 0x0557, quirk_pipea_force }, |