| From | Ben Hutchings <> | Date | Mon, 31 Mar 2014 00:23:35 +0100 | Subject | [PATCH 3.2 061/200] drm/radeon/DCE4+: clear bios scratch dpms bit (v2) |
| |
3.2.56-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@amd.com>
commit 6802d4bad83f50081b2788698570218aaff8d10e upstream.
The BlankCrtc table in some DCE8 boards has some logic shortcuts for the vbios when this bit is set. Clear it for driver use.
v2: fix typo
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=73420
Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/gpu/drm/radeon/radeon_atombios.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -2735,6 +2735,10 @@ void radeon_atom_initialize_bios_scratch /* tell the bios not to handle mode switching */ bios_6_scratch |= ATOM_S6_ACC_BLOCK_DISPLAY_SWITCH; + /* clear the vbios dpms state */ + if (ASIC_IS_DCE4(rdev)) + bios_2_scratch &= ~ATOM_S2_DEVICE_DPMS_STATE; + if (rdev->family >= CHIP_R600) { WREG32(R600_BIOS_2_SCRATCH, bios_2_scratch); WREG32(R600_BIOS_6_SCRATCH, bios_6_scratch);
|