Commit f9181399 authored Feb 11, 2019 by David Francis Committed by Alex Deucher Mar 19, 2019

drm/amd/display: Re-add custom degamma support



[Why]
The dc_gamma_type CUSTOM_GAMMA is used to represent degamma
mappings passed in by drm. This type of gamma must be interpolated
into a transfer function by apply_1d_lut.  The line in
mod_color_calculate_degamma_params that handled this case
was erroneously removed.

[How]
For CUSTOM_GAMMA degamma, calculate the lut as before.

Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 87d44f62

drivers/gpu/drm/amd/display/modules/color/color_gamma.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1854,6 +1854,8 @@ bool mod_color_calculate_degamma_params(struct dc_transfer_func *input_tf,
		coordinates_x, axis_x, curve,
		MAX_HW_POINTS, tf_pts,
		mapUserRamp && ramp && ramp->type == GAMMA_RGB_256);
		if (ramp->type == GAMMA_CUSTOM)
		apply_lut_1d(ramp, MAX_HW_POINTS, tf_pts);

		ret = true;

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