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drm/rockchip: Fix error in rgb2rgb matrix calculation

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The variable 'T' in the calculation formula
'output = T * M1 * N_y2r * M0 * N_r2y' has been omitted.

Change-Id: I347eca9786729de0ce35c35f483b55a7cb62bd7e
Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
This commit is contained in:
Algea Cao
2025-08-21 09:47:34 +08:00
committed by Tao Huang
parent 979dc17bdd
commit 0b7cf07695
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/rockchip/rockchip_post_csc.c
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@@ -1424,9 +1424,12 @@ static int csc_calc_adjust_output_coef(bool is_input_yuv, bool is_output_yuv,
csc_matrix_element_right_shift(&temp0, PQ_CSC_PARAM_FIX_BIT_WIDTH);
csc_matrix_multiply(&temp1, &temp0, &saturation_matrix);
csc_matrix_element_right_shift(&temp1, PQ_CSC_PARAM_HALF_FIX_BIT_WIDTH);
csc_matrix_multiply(out_matrix, &temp1, r2y_matrix);
csc_matrix_multiply(&temp0, &temp1, r2y_matrix);
csc_matrix_element_right_shift(&temp0, PQ_CSC_PARAM_FIX_BIT_WIDTH);
csc_matrix_multiply(out_matrix, csc_mode_cfg->pst_csc_coef, &temp0);
csc_matrix_element_right_shift_with_simple_round(out_matrix,
PQ_CSC_PARAM_FIX_BIT_WIDTH + PQ_CALC_ENHANCE_BIT);
PQ_CSC_PARAM_FIX_BIT_WIDTH +
PQ_CALC_ENHANCE_BIT);
dc_in_ventor.csc_offset0 = dc_in_offset;
dc_in_ventor.csc_offset1 = dc_in_offset;