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| author | Alex Deucher <alexdeucher@gmail.com> | 2011-02-02 19:46:06 -0500 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-02-04 09:46:30 +1000 |
| commit | 87364760de5d631390c478fcbac8db1b926e0adf (patch) | |
| tree | 176b18953a32d7709474872623a58c9a25d3011f /drivers/gpu/drm/radeon/radeon_atombios.c | |
| parent | a70b95c017e8b518e1e069853355e4e497453dbb (diff) | |
| download | kernel_samsung_smdk4412-87364760de5d631390c478fcbac8db1b926e0adf.zip kernel_samsung_smdk4412-87364760de5d631390c478fcbac8db1b926e0adf.tar.gz kernel_samsung_smdk4412-87364760de5d631390c478fcbac8db1b926e0adf.tar.bz2 | |
drm/radeon/kms: fix s/r issues with bios scratch regs
The accelerate mode bit gets checked by certain atom
command tables to set up some register state. It needs
to be clear when setting modes and set when not.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=26942
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_atombios.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_atombios.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 4dc9c51..b64e603 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -2609,7 +2609,7 @@ void radeon_atom_initialize_bios_scratch_regs(struct drm_device *dev) bios_2_scratch &= ~ATOM_S2_VRI_BRIGHT_ENABLE; /* tell the bios not to handle mode switching */ - bios_6_scratch |= (ATOM_S6_ACC_BLOCK_DISPLAY_SWITCH | ATOM_S6_ACC_MODE); + bios_6_scratch |= ATOM_S6_ACC_BLOCK_DISPLAY_SWITCH; if (rdev->family >= CHIP_R600) { WREG32(R600_BIOS_2_SCRATCH, bios_2_scratch); @@ -2660,10 +2660,13 @@ void radeon_atom_output_lock(struct drm_encoder *encoder, bool lock) else bios_6_scratch = RREG32(RADEON_BIOS_6_SCRATCH); - if (lock) + if (lock) { bios_6_scratch |= ATOM_S6_CRITICAL_STATE; - else + bios_6_scratch &= ~ATOM_S6_ACC_MODE; + } else { bios_6_scratch &= ~ATOM_S6_CRITICAL_STATE; + bios_6_scratch |= ATOM_S6_ACC_MODE; + } if (rdev->family >= CHIP_R600) WREG32(R600_BIOS_6_SCRATCH, bios_6_scratch); |