diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input.c index af9d682f8943..a20feaedfca4 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_mem_input.c @@ -113,16 +113,25 @@ bool dce110_mem_input_program_surface_flip_and_addr( struct dce110_mem_input *mem_input110 = TO_DCE110_MEM_INPUT(mem_input); uint32_t value = 0; + uint32_t value_old = 0; + uint32_t lock_value = 0; + + lock_value = dm_read_reg(mem_input110->base.ctx, DCP_REG(mmGRPH_UPDATE)); + set_reg_field_value(lock_value, 1, GRPH_UPDATE, GRPH_UPDATE_LOCK); + dm_write_reg(mem_input110->base.ctx, DCP_REG(mmGRPH_UPDATE), lock_value); value = dm_read_reg(mem_input110->base.ctx, DCP_REG(mmGRPH_FLIP_CONTROL)); + value_old = value; if (flip_immediate) { - set_reg_field_value(value, 1, GRPH_FLIP_CONTROL, GRPH_SURFACE_UPDATE_IMMEDIATE_EN); + set_reg_field_value(value, 0, GRPH_FLIP_CONTROL, GRPH_SURFACE_UPDATE_IMMEDIATE_EN); set_reg_field_value(value, 1, GRPH_FLIP_CONTROL, GRPH_SURFACE_UPDATE_H_RETRACE_EN); } else { set_reg_field_value(value, 0, GRPH_FLIP_CONTROL, GRPH_SURFACE_UPDATE_IMMEDIATE_EN); set_reg_field_value(value, 0, GRPH_FLIP_CONTROL, GRPH_SURFACE_UPDATE_H_RETRACE_EN); } - dm_write_reg(mem_input110->base.ctx, DCP_REG(mmGRPH_FLIP_CONTROL), value); + if (value != value_old) { + dm_write_reg(mem_input110->base.ctx, DCP_REG(mmGRPH_FLIP_CONTROL), value); + } switch (address->type) { case PLN_ADDR_TYPE_GRAPHICS: @@ -147,6 +156,10 @@ bool dce110_mem_input_program_surface_flip_and_addr( if (flip_immediate) mem_input->current_address = *address; + lock_value = dm_read_reg(mem_input110->base.ctx, DCP_REG(mmGRPH_UPDATE)); + set_reg_field_value(lock_value, 0, GRPH_UPDATE, GRPH_UPDATE_LOCK); + dm_write_reg(mem_input110->base.ctx, DCP_REG(mmGRPH_UPDATE), lock_value); + return true; } |