diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_atombios.c')
-rw-r--r-- | drivers/gpu/drm/radeon/radeon_atombios.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index aa756dec895..cb5efcaf2ba 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -1045,6 +1045,34 @@ void radeon_atom_initialize_bios_scratch_regs(struct drm_device *dev) } +void radeon_save_bios_scratch_regs(struct radeon_device *rdev) +{ + uint32_t scratch_reg; + int i; + + if (rdev->family >= CHIP_R600) + scratch_reg = R600_BIOS_0_SCRATCH; + else + scratch_reg = RADEON_BIOS_0_SCRATCH; + + for (i = 0; i < RADEON_BIOS_NUM_SCRATCH; i++) + rdev->bios_scratch[i] = RREG32(scratch_reg + (i * 4)); +} + +void radeon_restore_bios_scratch_regs(struct radeon_device *rdev) +{ + uint32_t scratch_reg; + int i; + + if (rdev->family >= CHIP_R600) + scratch_reg = R600_BIOS_0_SCRATCH; + else + scratch_reg = RADEON_BIOS_0_SCRATCH; + + for (i = 0; i < RADEON_BIOS_NUM_SCRATCH; i++) + WREG32(scratch_reg + (i * 4), rdev->bios_scratch[i]); +} + void radeon_atom_output_lock(struct drm_encoder *encoder, bool lock) { struct drm_device *dev = encoder->dev; |