diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c index 39da73eba86e..592a8f7a1c6d 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c @@ -208,6 +208,52 @@ bool dmub_abm_set_pause(struct abm *abm, bool pause, unsigned int panel_inst, un return true; } + +/***************************************************************************** + * dmub_abm_save_restore() - dmub interface for abm save+pause and restore+ + * un-pause + * @dc: dc context + * @panel_inst: panel instance index + * @pData: contains command to pause/un-pause abm and exchange abm parameters + * + * When called Pause will get abm data and store in pData, and un-pause will + * set/apply abm data stored in pData. + * + *****************************************************************************/ +bool dmub_abm_save_restore( + struct dc_context *dc, + unsigned int panel_inst, + struct abm_save_restore *pData) +{ + union dmub_rb_cmd cmd; + uint8_t panel_mask = 0x01 << panel_inst; + unsigned int bytes = sizeof(struct abm_save_restore); + + // TODO: Optimize by only reading back final 4 bytes + dmub_flush_buffer_mem(&dc->dmub_srv->dmub->scratch_mem_fb); + + // Copy iramtable into cw7 + memcpy(dc->dmub_srv->dmub->scratch_mem_fb.cpu_addr, (void *)pData, bytes); + + memset(&cmd, 0, sizeof(cmd)); + cmd.abm_save_restore.header.type = DMUB_CMD__ABM; + cmd.abm_save_restore.header.sub_type = DMUB_CMD__ABM_SAVE_RESTORE; + + cmd.abm_save_restore.abm_init_config_data.src.quad_part = dc->dmub_srv->dmub->scratch_mem_fb.gpu_addr; + cmd.abm_save_restore.abm_init_config_data.bytes = bytes; + cmd.abm_save_restore.abm_init_config_data.version = DMUB_CMD_ABM_CONTROL_VERSION_1; + cmd.abm_save_restore.abm_init_config_data.panel_mask = panel_mask; + + cmd.abm_save_restore.header.payload_bytes = sizeof(struct dmub_rb_cmd_abm_save_restore); + + dm_execute_dmub_cmd(dc, &cmd, DM_DMUB_WAIT_TYPE_WAIT); + + // Copy iramtable data into local structure + memcpy((void *)pData, dc->dmub_srv->dmub->scratch_mem_fb.cpu_addr, bytes); + + return true; +} + bool dmub_abm_set_pipe(struct abm *abm, uint32_t otg_inst, uint32_t option, uint32_t panel_inst) { union dmub_rb_cmd cmd; |