From 6f59ee2091db655d08da7822a7c25e470f349c7b Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 27 Jan 2014 18:29:35 -0500 Subject: drm/radeon/DCE4+: clear bios scratch dpms bit (v2) 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 Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/radeon_atombios.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/gpu/drm/radeon') diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 5c39bf7c3d8..dfa64127717 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -3944,6 +3944,10 @@ void radeon_atom_initialize_bios_scratch_regs(struct drm_device *dev) /* 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); -- cgit v1.2.3-18-g5258