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drm/amd/display: Added support for individual control for multiple back-light instances.

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[Why & How]
Added support for individual control for multiple back-light instances.

Signed-off-by: Jake Wang <haonan.wang2@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@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
2021-04-23 16:42:35 -04:00
committed by Alex Deucher
parent 05adfd80cc
commit 6e568e438b
6 changed files with 47 additions and 27 deletions
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17
drivers/gpu/drm/amd/display/dc/dc_link.h
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@@ -216,6 +216,23 @@ static inline void get_edp_links(const struct dc *dc,
}
}
static inline bool dc_get_edp_link_panel_inst(const struct dc *dc,
const struct dc_link *link,
unsigned int *inst_out)
{
struct dc_link *edp_links[MAX_NUM_EDP];
int edp_num;
if (link->connector_signal != SIGNAL_TYPE_EDP)
return false;
get_edp_links(dc, edp_links, &edp_num);
if ((edp_num > 1) && (link->link_index > edp_links[0]->link_index))
*inst_out = 1;
else
*inst_out = 0;
return true;
}
/* Set backlight level of an embedded panel (eDP, LVDS).
* backlight_pwm_u16_16 is unsigned 32 bit with 16 bit integer
* and 16 bit fractional, where 1.0 is max backlight value.