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Message-ID: <20241009003334.254537-1-linux@treblig.org>
Date: Wed, 9 Oct 2024 01:33:34 +0100
From: linux@...blig.org
To: harry.wentland@....com,
sunpeng.li@....com,
Rodrigo.Siqueira@....com,
alexander.deucher@....com,
christian.koenig@....com,
Xinhui.Pan@....com
Cc: airlied@...il.com,
simona@...ll.ch,
amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [PATCH] drm/amd/display: Remove unused cm3_helper_translate_curve_to_degamma_hw_format
From: "Dr. David Alan Gilbert" <linux@...blig.org>
cm3_helper_translate_curve_to_degamma_hw_format() since it was added in
2020's commit
03f54d7d3448 ("drm/amd/display: Add DCN3 DPP")
Remove it.
Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
.../amd/display/dc/dcn30/dcn30_cm_common.c | 151 ------------------
.../display/dc/dwb/dcn30/dcn30_cm_common.h | 4 -
2 files changed, 155 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c
index f31f0e3abfc0..9118a0883f03 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_cm_common.c
@@ -285,157 +285,6 @@ bool cm3_helper_translate_curve_to_hw_format(
return true;
}
-#define NUM_DEGAMMA_REGIONS 12
-
-
-bool cm3_helper_translate_curve_to_degamma_hw_format(
- const struct dc_transfer_func *output_tf,
- struct pwl_params *lut_params)
-{
- struct curve_points3 *corner_points;
- struct pwl_result_data *rgb_resulted;
- struct pwl_result_data *rgb;
- struct pwl_result_data *rgb_plus_1;
-
- int32_t region_start, region_end;
- int32_t i;
- uint32_t j, k, seg_distr[MAX_REGIONS_NUMBER], increment, start_index, hw_points;
-
- if (output_tf == NULL || lut_params == NULL || output_tf->type == TF_TYPE_BYPASS)
- return false;
-
- corner_points = lut_params->corner_points;
- rgb_resulted = lut_params->rgb_resulted;
- hw_points = 0;
-
- memset(lut_params, 0, sizeof(struct pwl_params));
- memset(seg_distr, 0, sizeof(seg_distr));
-
- region_start = -NUM_DEGAMMA_REGIONS;
- region_end = 0;
-
-
- for (i = region_end - region_start; i < MAX_REGIONS_NUMBER ; i++)
- seg_distr[i] = -1;
- /* 12 segments
- * segments are from 2^-12 to 0
- */
- for (i = 0; i < NUM_DEGAMMA_REGIONS ; i++)
- seg_distr[i] = 4;
-
- for (k = 0; k < MAX_REGIONS_NUMBER; k++) {
- if (seg_distr[k] != -1)
- hw_points += (1 << seg_distr[k]);
- }
-
- j = 0;
- for (k = 0; k < (region_end - region_start); k++) {
- increment = NUMBER_SW_SEGMENTS / (1 << seg_distr[k]);
- start_index = (region_start + k + MAX_LOW_POINT) *
- NUMBER_SW_SEGMENTS;
- for (i = start_index; i < start_index + NUMBER_SW_SEGMENTS;
- i += increment) {
- if (j == hw_points - 1)
- break;
- if (i >= TRANSFER_FUNC_POINTS)
- return false;
- rgb_resulted[j].red = output_tf->tf_pts.red[i];
- rgb_resulted[j].green = output_tf->tf_pts.green[i];
- rgb_resulted[j].blue = output_tf->tf_pts.blue[i];
- j++;
- }
- }
-
- /* last point */
- start_index = (region_end + MAX_LOW_POINT) * NUMBER_SW_SEGMENTS;
- rgb_resulted[hw_points - 1].red = output_tf->tf_pts.red[start_index];
- 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];
-
- 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;
- corner_points[0].blue.x = corner_points[0].red.x;
- corner_points[1].red.x = dc_fixpt_pow(dc_fixpt_from_int(2),
- dc_fixpt_from_int(region_end));
- corner_points[1].green.x = corner_points[1].red.x;
- corner_points[1].blue.x = corner_points[1].red.x;
-
- corner_points[0].red.y = rgb_resulted[0].red;
- corner_points[0].green.y = rgb_resulted[0].green;
- corner_points[0].blue.y = rgb_resulted[0].blue;
-
- /* see comment above, m_arrPoints[1].y should be the Y value for the
- * region end (m_numOfHwPoints), not last HW point(m_numOfHwPoints - 1)
- */
- corner_points[1].red.y = rgb_resulted[hw_points - 1].red;
- corner_points[1].green.y = rgb_resulted[hw_points - 1].green;
- corner_points[1].blue.y = rgb_resulted[hw_points - 1].blue;
- corner_points[1].red.slope = dc_fixpt_zero;
- corner_points[1].green.slope = dc_fixpt_zero;
- corner_points[1].blue.slope = dc_fixpt_zero;
-
- if (output_tf->tf == TRANSFER_FUNCTION_PQ) {
- /* for PQ, we want to have a straight line from last HW X point,
- * and the slope to be such that we hit 1.0 at 10000 nits.
- */
- const struct fixed31_32 end_value =
- dc_fixpt_from_int(125);
-
- corner_points[1].red.slope = dc_fixpt_div(
- dc_fixpt_sub(dc_fixpt_one, corner_points[1].red.y),
- dc_fixpt_sub(end_value, corner_points[1].red.x));
- corner_points[1].green.slope = dc_fixpt_div(
- dc_fixpt_sub(dc_fixpt_one, corner_points[1].green.y),
- dc_fixpt_sub(end_value, corner_points[1].green.x));
- corner_points[1].blue.slope = dc_fixpt_div(
- dc_fixpt_sub(dc_fixpt_one, corner_points[1].blue.y),
- dc_fixpt_sub(end_value, corner_points[1].blue.x));
- }
-
- lut_params->hw_points_num = hw_points;
-
- k = 0;
- for (i = 1; i < MAX_REGIONS_NUMBER; i++) {
- if (seg_distr[k] != -1) {
- lut_params->arr_curve_points[k].segments_num =
- seg_distr[k];
- lut_params->arr_curve_points[i].offset =
- lut_params->arr_curve_points[k].offset + (1 << seg_distr[k]);
- }
- k++;
- }
-
- if (seg_distr[k] != -1)
- lut_params->arr_curve_points[k].segments_num = seg_distr[k];
-
- rgb = rgb_resulted;
- rgb_plus_1 = rgb_resulted + 1;
-
- 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);
-
- ++rgb_plus_1;
- ++rgb;
- ++i;
- }
- cm3_helper_convert_to_custom_float(rgb_resulted,
- lut_params->corner_points,
- hw_points, false);
-
- return true;
-}
-
bool cm3_helper_convert_to_custom_float(
struct pwl_result_data *rgb_resulted,
struct curve_points3 *corner_points,
diff --git a/drivers/gpu/drm/amd/display/dc/dwb/dcn30/dcn30_cm_common.h b/drivers/gpu/drm/amd/display/dc/dwb/dcn30/dcn30_cm_common.h
index bd98b327a6c7..b86347c9b038 100644
--- a/drivers/gpu/drm/amd/display/dc/dwb/dcn30/dcn30_cm_common.h
+++ b/drivers/gpu/drm/amd/display/dc/dwb/dcn30/dcn30_cm_common.h
@@ -63,10 +63,6 @@ bool cm3_helper_translate_curve_to_hw_format(
const struct dc_transfer_func *output_tf,
struct pwl_params *lut_params, bool fixpoint);
-bool cm3_helper_translate_curve_to_degamma_hw_format(
- const struct dc_transfer_func *output_tf,
- struct pwl_params *lut_params);
-
bool cm3_helper_convert_to_custom_float(
struct pwl_result_data *rgb_resulted,
struct curve_points3 *corner_points,
--
2.46.2
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