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drm/amd/display: Added support for multiple eDP BL control 

[WHY & HOW]
Driver currently assumes only 1 eDP is connected. Added support for
multiple eDP BL control.

Signed-off-by: Jake Wang <haonan.wang2@amd.com>
Acked-by: Bindu Ramamurthy <bindur12@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jake Wang 2021-04-01 15:04:50 -04:00 committed by Alex Deucher
parent 86c8236eec
commit e922057b55
2 changed files with 29 additions and 0 deletions
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2
drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hwseq.c
View File

@ -218,6 +218,8 @@ bool dcn21_set_backlight_level(struct pipe_ctx *pipe_ctx,
cmd.abm_set_backlight.header.sub_type = DMUB_CMD__ABM_SET_BACKLIGHT;
cmd.abm_set_backlight.abm_set_backlight_data.frame_ramp = frame_ramp;
cmd.abm_set_backlight.abm_set_backlight_data.backlight_user_level = backlight_pwm_u16_16;
cmd.abm_set_backlight.abm_set_backlight_data.version = DMUB_CMD_ABM_SET_BACKLIGHT_VERSION_1;
cmd.abm_set_backlight.abm_set_backlight_data.panel_mask = (0x01 << panel_cntl->inst);
cmd.abm_set_backlight.header.payload_bytes = sizeof(struct dmub_cmd_abm_set_backlight_data);
dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd);

27
drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
View File

@ -120,6 +120,16 @@
/* Trace buffer offset for entry */
#define TRACE_BUFFER_ENTRY_OFFSET 16
/**
* ABM backlight control version legacy
*/
#define DMUB_CMD_ABM_SET_BACKLIGHT_VERSION_UNKNOWN 0x0
/**
* ABM backlight control version with multi edp support
*/
#define DMUB_CMD_ABM_SET_BACKLIGHT_VERSION_1 0x1
/**
* Physical framebuffer address location, 64-bit.
*/
@ -1625,6 +1635,23 @@ struct dmub_cmd_abm_set_backlight_data {
* Requested backlight level from user.
*/
uint32_t backlight_user_level;
/**
* Backlight data version.
*/
uint8_t version;
/**
* Panel Control HW instance mask.
* Bit 0 is Panel Control HW instance 0.
* Bit 1 is Panel Control HW instance 1.
*/
uint8_t panel_mask;
/**
* Explicit padding to 4 byte boundary.
*/
uint8_t pad[2];
};
/**