Commit 5e9252d8 authored by Josip Pavic's avatar Josip Pavic Committed by Alex Deucher
Browse files

drm/amd/display: add option to use custom backlight caps 



[Why & How]
Provide option for vendors to specify a custom brightness-to-backlight
conversion profile.

Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: default avatarAnthony Koo <Anthony.Koo@amd.com>
Acked-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarJosip Pavic <Josip.Pavic@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent b5389eca

drivers/gpu/drm/amd/display/modules/power/power_helpers.c

+43 −0
Original line number Diff line number Diff line
@@ -116,6 +116,27 @@ static const struct abm_parameters * const abm_settings[] = { 
	abm_settings_config2,

};



const struct dm_bl_data_point custom_backlight_curve0[] = {

		{2, 14}, {4, 16}, {6, 18}, {8, 21}, {10, 23}, {12, 26}, {14, 29}, {16, 32}, {18, 35},

		{20, 38}, {22, 41}, {24, 44}, {26, 48}, {28, 52}, {30, 55}, {32, 59}, {34, 62},

		{36, 67}, {38, 71}, {40, 75}, {42, 80}, {44, 84}, {46, 88}, {48, 93}, {50, 98},

		{52, 103}, {54, 108}, {56, 113}, {58, 118}, {60, 123}, {62, 129}, {64, 135}, {66, 140},

		{68, 146}, {70, 152}, {72, 158}, {74, 164}, {76, 171}, {78, 177}, {80, 183}, {82, 190},

		{84, 197}, {86, 204}, {88, 211}, {90, 218}, {92, 225}, {94, 232}, {96, 240}, {98, 247}};



struct custom_backlight_profile {

	uint8_t  ac_level_percentage;

	uint8_t  dc_level_percentage;

	uint8_t  min_input_signal;

	uint8_t  max_input_signal;

	uint8_t  num_data_points;

	const struct dm_bl_data_point *data_points;

};



static const struct custom_backlight_profile custom_backlight_profiles[] = {

		{100, 32, 12, 255, ARRAY_SIZE(custom_backlight_curve0), custom_backlight_curve0},

};



#define NUM_AMBI_LEVEL    5

#define NUM_AGGR_LEVEL    4

#define NUM_POWER_FN_SEGS 8
@@ -944,3 +965,25 @@ bool psr_su_set_dsc_slice_height(struct dc *dc, struct dc_link *link, 


	return true;

}



bool fill_custom_backlight_caps(unsigned int config_no, struct dm_acpi_atif_backlight_caps *caps)

{

	unsigned int data_points_size;



	if (config_no >= ARRAY_SIZE(custom_backlight_profiles))

		return false;



	data_points_size = custom_backlight_profiles[config_no].num_data_points

			* sizeof(custom_backlight_profiles[config_no].data_points[0]);



	caps->size = sizeof(struct dm_acpi_atif_backlight_caps) - sizeof(caps->data_points) + data_points_size;

	caps->flags = 0;

	caps->error_code = 0;

	caps->ac_level_percentage = custom_backlight_profiles[config_no].ac_level_percentage;

	caps->dc_level_percentage = custom_backlight_profiles[config_no].dc_level_percentage;

	caps->min_input_signal = custom_backlight_profiles[config_no].min_input_signal;

	caps->max_input_signal = custom_backlight_profiles[config_no].max_input_signal;

	caps->num_data_points = custom_backlight_profiles[config_no].num_data_points;

	memcpy(caps->data_points, custom_backlight_profiles[config_no].data_points, data_points_size);

	return true;

}

drivers/gpu/drm/amd/display/modules/power/power_helpers.h

+3 −0
Original line number Diff line number Diff line
@@ -62,4 +62,7 @@ bool mod_power_only_edp(const struct dc_state *context, 
bool psr_su_set_dsc_slice_height(struct dc *dc, struct dc_link *link,

			      struct dc_stream_state *stream,

			      struct psr_config *config);



bool fill_custom_backlight_caps(unsigned int config_no,

		struct dm_acpi_atif_backlight_caps *caps);

#endif /* MODULES_POWER_POWER_HELPERS_H_ */