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drm/amd/display: Skip backlight control delay on external powered links

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[Why]
When an eDP panel is powered externally from a different GPU, we can avoid
waiting for hardware sequencing delays when switching the backlight on/off
as the display backlight is no longer powered by the original source.

[How]
This commit extends the 'link_powered_externally' variable to allow
bypassing hardware delays for additional backlight commands and force the
backlight on/off when a link is powered by another GPU.

Tested-by: Daniel Wheeler <Daniel.Wheeler@amd.com>
Reviewed-by: Felipe Clark <felipe.clark@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Tony Tascioglu <tony.tascioglu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tony Tascioglu 2022-12-12 10:20:33 -05:00 committed by Alex Deucher
parent 40774ad1c4
commit e0886e1fa5
6 changed files with 17 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
View File

@ -1698,14 +1698,14 @@ static enum bp_result bios_parser_enable_lvtma_control(
struct dc_bios *dcb,
uint8_t uc_pwr_on,
uint8_t panel_instance,
uint8_t bypass_powerdown_wait)
uint8_t bypass_panel_control_wait)
{
struct bios_parser *bp = BP_FROM_DCB(dcb);
if (!bp->cmd_tbl.enable_lvtma_control)
return BP_RESULT_FAILURE;
return bp->cmd_tbl.enable_lvtma_control(bp, uc_pwr_on, panel_instance, bypass_powerdown_wait);
return bp->cmd_tbl.enable_lvtma_control(bp, uc_pwr_on, panel_instance, bypass_panel_control_wait);
}
static bool bios_parser_is_accelerated_mode(

12
drivers/gpu/drm/amd/display/dc/bios/command_table2.c
View File

@ -987,7 +987,7 @@ static enum bp_result enable_lvtma_control(
struct bios_parser *bp,
uint8_t uc_pwr_on,
uint8_t panel_instance,
uint8_t bypass_powerdown_wait);
uint8_t bypass_panel_control_wait);
static void init_enable_lvtma_control(struct bios_parser *bp)
{
@ -1000,7 +1000,7 @@ static void enable_lvtma_control_dmcub(
struct dc_dmub_srv *dmcub,
uint8_t uc_pwr_on,
uint8_t panel_instance,
uint8_t bypass_powerdown_wait)
uint8_t bypass_panel_control_wait)
{
union dmub_rb_cmd cmd;
@ -1014,8 +1014,8 @@ static void enable_lvtma_control_dmcub(
uc_pwr_on;
cmd.lvtma_control.data.panel_inst =
panel_instance;
cmd.lvtma_control.data.bypass_powerdown_wait =
bypass_powerdown_wait;
cmd.lvtma_control.data.bypass_panel_control_wait =
bypass_panel_control_wait;
dc_dmub_srv_cmd_queue(dmcub, &cmd);
dc_dmub_srv_cmd_execute(dmcub);
dc_dmub_srv_wait_idle(dmcub);
@ -1026,7 +1026,7 @@ static enum bp_result enable_lvtma_control(
struct bios_parser *bp,
uint8_t uc_pwr_on,
uint8_t panel_instance,
uint8_t bypass_powerdown_wait)
uint8_t bypass_panel_control_wait)
{
enum bp_result result = BP_RESULT_FAILURE;
@ -1035,7 +1035,7 @@ static enum bp_result enable_lvtma_control(
enable_lvtma_control_dmcub(bp->base.ctx->dmub_srv,
uc_pwr_on,
panel_instance,
bypass_powerdown_wait);
bypass_panel_control_wait);
return BP_RESULT_OK;
}
return result;

2
drivers/gpu/drm/amd/display/dc/bios/command_table2.h
View File

@ -97,7 +97,7 @@ struct cmd_tbl {
enum bp_result (*enable_lvtma_control)(struct bios_parser *bp,
uint8_t uc_pwr_on,
uint8_t panel_instance,
uint8_t bypass_powerdown_wait);
uint8_t bypass_panel_control_wait);
};
void dal_firmware_parser_init_cmd_tbl(struct bios_parser *bp);

2
drivers/gpu/drm/amd/display/dc/dc_bios_types.h
View File

@ -141,7 +141,7 @@ struct dc_vbios_funcs {
struct dc_bios *bios,
uint8_t uc_pwr_on,
uint8_t panel_instance,
uint8_t bypass_powerdown_wait);
uint8_t bypass_panel_control_wait);
enum bp_result (*get_soc_bb_info)(
struct dc_bios *dcb,

9
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
View File

@ -943,7 +943,6 @@ void dce110_edp_wait_for_T12(
msleep(t12_duration - time_since_edp_poweroff_ms);
}
}
/*todo: cloned in stream enc, fix*/
/*
* @brief
@ -1022,16 +1021,20 @@ void dce110_edp_backlight_control(
DC_LOG_DC("edp_receiver_ready_T7 skipped\n");
}
/* Setting link_powered_externally will bypass delays in the backlight
* as they are not required if the link is being powered by a different
* source.
*/
if (ctx->dc->ctx->dmub_srv &&
ctx->dc->debug.dmub_command_table) {
if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_ON)
ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios,
LVTMA_CONTROL_LCD_BLON,
panel_instance, 0);
panel_instance, link->link_powered_externally);
else
ctx->dc_bios->funcs->enable_lvtma_control(ctx->dc_bios,
LVTMA_CONTROL_LCD_BLOFF,
panel_instance, 0);
panel_instance, link->link_powered_externally);
}
link_transmitter_control(ctx->dc_bios, &cntl);

2
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
View File

@ -3111,7 +3111,7 @@ struct dmub_rb_cmd_panel_cntl {
*/
struct dmub_cmd_lvtma_control_data {
uint8_t uc_pwr_action; /**< LVTMA_ACTION */
uint8_t bypass_powerdown_wait;
uint8_t bypass_panel_control_wait;
uint8_t reserved_0[2];
uint8_t panel_inst; /**< LVTMA control instance */
uint8_t reserved_1[3]; /**< For future use */