diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/color/color_gamma.c | 60 |
1 files changed, 40 insertions, 20 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c index ef742d95ef05..275f11f8bea3 100644 --- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c +++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c @@ -54,12 +54,18 @@ static struct hw_x_point coordinates_x[MAX_HW_POINTS + 2]; * just multiply with 2^gamma which can be computed once, and save the result so we * recursively compute all the values. */ - /*sRGB 709 2.2 2.4 P3*/ -static const int32_t gamma_numerator01[] = { 31308, 180000, 0, 0, 0}; -static const int32_t gamma_numerator02[] = { 12920, 4500, 0, 0, 0}; -static const int32_t gamma_numerator03[] = { 55, 99, 0, 0, 0}; -static const int32_t gamma_numerator04[] = { 55, 99, 0, 0, 0}; -static const int32_t gamma_numerator05[] = { 2400, 2200, 2200, 2400, 2600}; + /*sRGB 709 2.2 2.4 P3*/ +static const int32_t regamma_numerator01[] = { 31308, 180000, 0, 0, 0}; +static const int32_t regamma_numerator02[] = { 12920, 4500, 0, 0, 0}; +static const int32_t regamma_numerator03[] = { 55, 99, 0, 0, 0}; +static const int32_t regamma_numerator04[] = { 55, 99, 0, 0, 0}; +static const int32_t regamma_numerator05[] = { 2400, 2200, 2200, 2400, 2600}; + +static const int32_t degamma_numerator01[] = { 40450, 810000, 0, 0, 0}; +static const int32_t degamma_numerator02[] = { 12920, 4500, 0, 0, 0}; +static const int32_t degamma_numerator03[] = { 55, 99, 0, 0, 0}; +static const int32_t degamma_numerator04[] = { 55, 99, 0, 0, 0}; +static const int32_t degamma_numerator05[] = { 2400, 2200, 2200, 2400, 2600}; /* one-time setup of X points */ void setup_x_points_distribution(void) @@ -288,7 +294,8 @@ struct dividers { }; -static bool build_coefficients(struct gamma_coefficients *coefficients, enum dc_transfer_func_predefined type) +static bool build_coefficients(struct gamma_coefficients *coefficients, + enum dc_transfer_func_predefined type, bool isRegamma) { uint32_t i = 0; @@ -311,16 +318,29 @@ static bool build_coefficients(struct gamma_coefficients *coefficients, enum dc_ } do { - coefficients->a0[i] = dc_fixpt_from_fraction( - gamma_numerator01[index], 10000000); - coefficients->a1[i] = dc_fixpt_from_fraction( - gamma_numerator02[index], 1000); - coefficients->a2[i] = dc_fixpt_from_fraction( - gamma_numerator03[index], 1000); - coefficients->a3[i] = dc_fixpt_from_fraction( - gamma_numerator04[index], 1000); - coefficients->user_gamma[i] = dc_fixpt_from_fraction( - gamma_numerator05[index], 1000); + if (isRegamma) { + coefficients->a0[i] = dc_fixpt_from_fraction( + regamma_numerator01[index], 10000000); + coefficients->a1[i] = dc_fixpt_from_fraction( + regamma_numerator02[index], 1000); + coefficients->a2[i] = dc_fixpt_from_fraction( + regamma_numerator03[index], 1000); + coefficients->a3[i] = dc_fixpt_from_fraction( + regamma_numerator04[index], 1000); + coefficients->user_gamma[i] = dc_fixpt_from_fraction( + regamma_numerator05[index], 1000); + } else { + coefficients->a0[i] = dc_fixpt_from_fraction( + degamma_numerator01[index], 10000000); + coefficients->a1[i] = dc_fixpt_from_fraction( + degamma_numerator02[index], 1000); + coefficients->a2[i] = dc_fixpt_from_fraction( + degamma_numerator03[index], 1000); + coefficients->a3[i] = dc_fixpt_from_fraction( + degamma_numerator04[index], 1000); + coefficients->user_gamma[i] = dc_fixpt_from_fraction( + degamma_numerator05[index], 1000); + } ++i; } while (i != ARRAY_SIZE(coefficients->a0)); @@ -833,7 +853,7 @@ static bool build_regamma(struct pwl_float_data_ex *rgb_regamma, if (!coeff) goto release; - if (!build_coefficients(coeff, type)) + if (!build_coefficients(coeff, type, true)) goto release; memset(cal_buffer->buffer, 0, NUM_PTS_IN_REGION * sizeof(struct fixed31_32)); @@ -1082,7 +1102,7 @@ static bool build_degamma(struct pwl_float_data_ex *curve, uint32_t begin_index, end_index; bool ret = false; - if (!build_coefficients(&coeff, type)) + if (!build_coefficients(&coeff, type, false)) goto release; i = 0; @@ -1685,7 +1705,7 @@ static void apply_degamma_for_user_regamma(struct pwl_float_data_ex *rgb_regamma struct pwl_float_data_ex *rgb = rgb_regamma; const struct hw_x_point *coord_x = coordinates_x; - build_coefficients(&coeff, TRANSFER_FUNCTION_SRGB); + build_coefficients(&coeff, TRANSFER_FUNCTION_SRGB, true); i = 0; while (i != hw_points_num + 1) { |