diff options
| author | Roman Li <Roman.Li@amd.com> | 2017-08-25 16:44:20 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-09-26 18:17:20 -0400 |
| commit | 07fde11f27fb4de3b63ef117593291b094a23e15 (patch) | |
| tree | a320bf4f11524264fd196e3e8adc6d201d97598e /drivers | |
| parent | 1e4cee77bbd50d6c868439bfaf8ad61b6c6fcfc3 (diff) | |
| download | linux-07fde11f27fb4de3b63ef117593291b094a23e15.tar.bz2 | |
drm/amd/display: program fbc for scatter/gather
Fixing screen flickering when FBC enabled on Stoney
Signed-off-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c index 2e97e5757fb9..f82c26995609 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c @@ -189,7 +189,7 @@ void dce110_compressor_enable_fbc( (!dce110_compressor_is_fbc_enabled_in_hw(compressor, NULL))) { uint32_t addr; - uint32_t value; + uint32_t value, misc_value; addr = mmFBC_CNTL; @@ -206,9 +206,23 @@ void dce110_compressor_enable_fbc( compressor->attached_inst = params->inst; cp110->offsets = reg_offsets[params->inst]; - /*Toggle it as there is bug in HW */ + /* Toggle it as there is bug in HW */ set_reg_field_value(value, 0, FBC_CNTL, FBC_GRPH_COMP_EN); dm_write_reg(compressor->ctx, addr, value); + + /* FBC usage with scatter & gather for dce110 */ + misc_value = dm_read_reg(compressor->ctx, mmFBC_MISC); + + set_reg_field_value(misc_value, 1, + FBC_MISC, FBC_INVALIDATE_ON_ERROR); + set_reg_field_value(misc_value, 1, + FBC_MISC, FBC_DECOMPRESS_ERROR_CLEAR); + set_reg_field_value(misc_value, 0x14, + FBC_MISC, FBC_SLOW_REQ_INTERVAL); + + dm_write_reg(compressor->ctx, mmFBC_MISC, misc_value); + + /* Enable FBC */ set_reg_field_value(value, 1, FBC_CNTL, FBC_GRPH_COMP_EN); dm_write_reg(compressor->ctx, addr, value); |