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drm/amd/display: Allow inverted gamma

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[why]
There's a use case for inverted gamma
and it's been confirmed that negative slopes are ok.

[how]
Remove code for blocking non-monotonically increasing gamma

Signed-off-by: Aidan Yang <Aidan.Yang@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Acked-by: Reza Amini <Reza.Amini@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aidan Yang 2019-10-02 10:47:31 -04:00 committed by Alex Deucher
parent 8775e89fa7
commit ceba1a0128
1 changed files with 8 additions and 14 deletions
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22
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_cm_common.c
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@ -393,6 +393,10 @@ bool cm_helper_translate_curve_to_hw_format(
rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
// All 3 color channels have same x
corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
dc_fixpt_from_int(region_start));
@ -464,13 +468,6 @@ bool cm_helper_translate_curve_to_hw_format(
i = 1;
while (i != hw_points + 1) {
if (dc_fixpt_lt(rgb_plus_1->red, rgb->red))
rgb_plus_1->red = rgb->red;
if (dc_fixpt_lt(rgb_plus_1->green, rgb->green))
rgb_plus_1->green = rgb->green;
if (dc_fixpt_lt(rgb_plus_1->blue, rgb->blue))
rgb_plus_1->blue = rgb->blue;
rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);
@ -562,6 +559,10 @@ bool cm_helper_translate_curve_to_degamma_hw_format(
rgb_resulted[hw_points - 1].green = output_tf->tf_pts.green[start_index];
rgb_resulted[hw_points - 1].blue = output_tf->tf_pts.blue[start_index];
rgb_resulted[hw_points].red = rgb_resulted[hw_points - 1].red;
rgb_resulted[hw_points].green = rgb_resulted[hw_points - 1].green;
rgb_resulted[hw_points].blue = rgb_resulted[hw_points - 1].blue;
corner_points[0].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
dc_fixpt_from_int(region_start));
corner_points[0].green.x = corner_points[0].red.x;
@ -624,13 +625,6 @@ bool cm_helper_translate_curve_to_degamma_hw_format(
i = 1;
while (i != hw_points + 1) {
if (dc_fixpt_lt(rgb_plus_1->red, rgb->red))
rgb_plus_1->red = rgb->red;
if (dc_fixpt_lt(rgb_plus_1->green, rgb->green))
rgb_plus_1->green = rgb->green;
if (dc_fixpt_lt(rgb_plus_1->blue, rgb->blue))
rgb_plus_1->blue = rgb->blue;
rgb->delta_red = dc_fixpt_sub(rgb_plus_1->red, rgb->red);
rgb->delta_green = dc_fixpt_sub(rgb_plus_1->green, rgb->green);
rgb->delta_blue = dc_fixpt_sub(rgb_plus_1->blue, rgb->blue);