diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c | 67 |
1 files changed, 54 insertions, 13 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 775d3bf0bd39..9150d2694450 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_compressor.c @@ -102,6 +102,43 @@ static uint32_t align_to_chunks_number_per_line(uint32_t pixels) return 256 * ((pixels + 255) / 256); } +static void reset_lb_on_vblank(struct dc_context *ctx) +{ + uint32_t value, frame_count; + uint32_t retry = 0; + uint32_t status_pos = + dm_read_reg(ctx, mmCRTC_STATUS_POSITION); + + + /* Only if CRTC is enabled and counter is moving we wait for one frame. */ + if (status_pos != dm_read_reg(ctx, mmCRTC_STATUS_POSITION)) { + /* Resetting LB on VBlank */ + value = dm_read_reg(ctx, mmLB_SYNC_RESET_SEL); + set_reg_field_value(value, 3, LB_SYNC_RESET_SEL, LB_SYNC_RESET_SEL); + set_reg_field_value(value, 1, LB_SYNC_RESET_SEL, LB_SYNC_RESET_SEL2); + dm_write_reg(ctx, mmLB_SYNC_RESET_SEL, value); + + frame_count = dm_read_reg(ctx, mmCRTC_STATUS_FRAME_COUNT); + + + for (retry = 100; retry > 0; retry--) { + if (frame_count != dm_read_reg(ctx, mmCRTC_STATUS_FRAME_COUNT)) + break; + msleep(1); + } + if (!retry) + dm_error("Frame count did not increase for 100ms.\n"); + + /* Resetting LB on VBlank */ + value = dm_read_reg(ctx, mmLB_SYNC_RESET_SEL); + set_reg_field_value(value, 2, LB_SYNC_RESET_SEL, LB_SYNC_RESET_SEL); + set_reg_field_value(value, 0, LB_SYNC_RESET_SEL, LB_SYNC_RESET_SEL2); + dm_write_reg(ctx, mmLB_SYNC_RESET_SEL, value); + + } + +} + static void wait_for_fbc_state_changed( struct dce110_compressor *cp110, bool enabled) @@ -232,19 +269,23 @@ void dce110_compressor_disable_fbc(struct compressor *compressor) { struct dce110_compressor *cp110 = TO_DCE110_COMPRESSOR(compressor); - if (compressor->options.bits.FBC_SUPPORT && - dce110_compressor_is_fbc_enabled_in_hw(compressor, NULL)) { - uint32_t reg_data; - /* Turn off compression */ - reg_data = dm_read_reg(compressor->ctx, mmFBC_CNTL); - set_reg_field_value(reg_data, 0, FBC_CNTL, FBC_GRPH_COMP_EN); - dm_write_reg(compressor->ctx, mmFBC_CNTL, reg_data); - - /* Reset enum controller_id to undefined */ - compressor->attached_inst = 0; - compressor->is_enabled = false; - - wait_for_fbc_state_changed(cp110, false); + if (compressor->options.bits.FBC_SUPPORT) { + if (dce110_compressor_is_fbc_enabled_in_hw(compressor, NULL)) { + uint32_t reg_data; + /* Turn off compression */ + reg_data = dm_read_reg(compressor->ctx, mmFBC_CNTL); + set_reg_field_value(reg_data, 0, FBC_CNTL, FBC_GRPH_COMP_EN); + dm_write_reg(compressor->ctx, mmFBC_CNTL, reg_data); + + /* Reset enum controller_id to undefined */ + compressor->attached_inst = 0; + compressor->is_enabled = false; + + wait_for_fbc_state_changed(cp110, false); + } + + /* Sync line buffer - dce100/110 only*/ + reset_lb_on_vblank(compressor->ctx); } } |