/* Copyright 2018 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: AMD * */ #include "power_helpers.h" #include "dc/inc/hw/dmcu.h" #include "dc/inc/hw/abm.h" #include "dc.h" #include "core_types.h" #include "dmub_cmd.h" #define DIV_ROUNDUP(a, b) (((a)+((b)/2))/(b)) #define bswap16_based_on_endian(big_endian, value) \ (big_endian) ? cpu_to_be16(value) : cpu_to_le16(value) /* Possible Min Reduction config from least aggressive to most aggressive * 0 1 2 3 4 5 6 7 8 9 10 11 12 * 100 98.0 94.1 94.1 85.1 80.3 75.3 69.4 60.0 57.6 50.2 49.8 40.0 % */ static const unsigned char min_reduction_table[13] = { 0xff, 0xfa, 0xf0, 0xf0, 0xd9, 0xcd, 0xc0, 0xb1, 0x99, 0x93, 0x80, 0x82, 0x66}; /* Possible Max Reduction configs from least aggressive to most aggressive * 0 1 2 3 4 5 6 7 8 9 10 11 12 * 96.1 89.8 85.1 80.3 69.4 64.7 64.7 50.2 39.6 30.2 30.2 30.2 19.6 % */ static const unsigned char max_reduction_table[13] = { 0xf5, 0xe5, 0xd9, 0xcd, 0xb1, 0xa5, 0xa5, 0x80, 0x65, 0x4d, 0x4d, 0x4d, 0x32}; /* Possible ABM 2.2 Min Reduction configs from least aggressive to most aggressive * 0 1 2 3 4 5 6 7 8 9 10 11 12 * 100 100 100 100 100 100 100 100 100 92.2 83.1 75.3 75.3 % */ static const unsigned char min_reduction_table_v_2_2[13] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xeb, 0xd4, 0xc0, 0xc0}; /* Possible ABM 2.2 Max Reduction configs from least aggressive to most aggressive * 0 1 2 3 4 5 6 7 8 9 10 11 12 * 96.1 89.8 74.9 69.4 64.7 52.2 48.6 39.6 30.2 25.1 19.6 12.5 12.5 % */ static const unsigned char max_reduction_table_v_2_2[13] = { 0xf5, 0xe5, 0xbf, 0xb1, 0xa5, 0x85, 0x7c, 0x65, 0x4d, 0x40, 0x32, 0x20, 0x20}; /* Predefined ABM configuration sets. We may have different configuration sets * in order to satisfy different power/quality requirements. */ static const unsigned char abm_config[abm_defines_max_config][abm_defines_max_level] = { /* ABM Level 1, ABM Level 2, ABM Level 3, ABM Level 4 */ { 2, 5, 7, 8 }, /* Default - Medium aggressiveness */ { 2, 5, 8, 11 }, /* Alt #1 - Increased aggressiveness */ { 0, 2, 4, 8 }, /* Alt #2 - Minimal aggressiveness */ { 3, 6, 10, 12 }, /* Alt #3 - Super aggressiveness */ }; struct abm_parameters { unsigned char min_reduction; unsigned char max_reduction; unsigned char bright_pos_gain; unsigned char dark_pos_gain; unsigned char brightness_gain; unsigned char contrast_factor; unsigned char deviation_gain; unsigned char min_knee; unsigned char max_knee; unsigned short blRampReduction; unsigned short blRampStart; }; static const struct abm_parameters abm_settings_config0[abm_defines_max_level] = { // min_red max_red bright_pos dark_pos bright_gain contrast dev min_knee max_knee blRed blStart {0xff, 0xbf, 0x20, 0x00, 0xff, 0x99, 0xb3, 0x40, 0xe0, 0xf777, 0xcccc}, {0xde, 0x85, 0x20, 0x00, 0xe0, 0x90, 0xa8, 0x40, 0xc8, 0xf777, 0xcccc}, {0xb0, 0x50, 0x20, 0x00, 0xc0, 0x88, 0x78, 0x70, 0xa0, 0xeeee, 0x9999}, {0x82, 0x40, 0x20, 0x00, 0x00, 0xb8, 0xb3, 0x70, 0x70, 0xe333, 0xb333}, }; static const struct abm_parameters abm_settings_config1[abm_defines_max_level] = { // min_red max_red bright_pos dark_pos bright_gain contrast dev min_knee max_knee blRed blStart {0xf0, 0xd9, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xcccc, 0xcccc}, {0xcd, 0xa5, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xcccc, 0xcccc}, {0x99, 0x65, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xcccc, 0xcccc}, {0x82, 0x4d, 0x20, 0x00, 0x00, 0xff, 0xb3, 0x70, 0x70, 0xcccc, 0xcccc}, }; static const struct abm_parameters abm_settings_config2[abm_defines_max_level] = { // min_red max_red bright_pos dark_pos bright_gain contrast dev min_knee max_knee blRed blStart {0xf0, 0xbf, 0x20, 0x00, 0x88, 0x99, 0xb3, 0x40, 0xe0, 0x0000, 0xcccc}, {0xd8, 0x85, 0x20, 0x00, 0x70, 0x90, 0xa8, 0x40, 0xc8, 0x0700, 0xb333}, {0xb8, 0x58, 0x20, 0x00, 0x64, 0x88, 0x78, 0x70, 0xa0, 0x7000, 0x9999}, {0x82, 0x40, 0x20, 0x00, 0x00, 0xb8, 0xb3, 0x70, 0x70, 0xc333, 0xb333}, }; static const struct abm_parameters * const abm_settings[] = { abm_settings_config0, abm_settings_config1, abm_settings_config2, }; #define NUM_AMBI_LEVEL 5 #define NUM_AGGR_LEVEL 4 #define NUM_POWER_FN_SEGS 8 #define NUM_BL_CURVE_SEGS 16 #define IRAM_SIZE 256 #define IRAM_RESERVE_AREA_START_V2 0xF0 // reserve 0xF0~0xF6 are write by DMCU only #define IRAM_RESERVE_AREA_END_V2 0xF6 // reserve 0xF0~0xF6 are write by DMCU only #define IRAM_RESERVE_AREA_START_V2_2 0xF0 // reserve 0xF0~0xFF are write by DMCU only #define IRAM_RESERVE_AREA_END_V2_2 0xFF // reserve 0xF0~0xFF are write by DMCU only #pragma pack(push, 1) /* NOTE: iRAM is 256B in size */ struct iram_table_v_2 { /* flags */ uint16_t min_abm_backlight; /* 0x00 U16 */ /* parameters for ABM2.0 algorithm */ uint8_t min_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x02 U0.8 */ uint8_t max_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x16 U0.8 */ uint8_t bright_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x2a U2.6 */ uint8_t bright_neg_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x3e U2.6 */ uint8_t dark_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x52 U2.6 */ uint8_t dark_neg_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x66 U2.6 */ uint8_t iir_curve[NUM_AMBI_LEVEL]; /* 0x7a U0.8 */ uint8_t deviation_gain; /* 0x7f U0.8 */ /* parameters for crgb conversion */ uint16_t crgb_thresh[NUM_POWER_FN_SEGS]; /* 0x80 U3.13 */ uint16_t crgb_offset[NUM_POWER_FN_SEGS]; /* 0x90 U1.15 */ uint16_t crgb_slope[NUM_POWER_FN_SEGS]; /* 0xa0 U4.12 */ /* parameters for custom curve */ /* thresholds for brightness --> backlight */ uint16_t backlight_thresholds[NUM_BL_CURVE_SEGS]; /* 0xb0 U16.0 */ /* offsets for brightness --> backlight */ uint16_t backlight_offsets[NUM_BL_CURVE_SEGS]; /* 0xd0 U16.0 */ /* For reading PSR State directly from IRAM */ uint8_t psr_state; /* 0xf0 */ uint8_t dmcu_mcp_interface_version; /* 0xf1 */ uint8_t dmcu_abm_feature_version; /* 0xf2 */ uint8_t dmcu_psr_feature_version; /* 0xf3 */ uint16_t dmcu_version; /* 0xf4 */ uint8_t dmcu_state; /* 0xf6 */ uint16_t blRampReduction; /* 0xf7 */ uint16_t blRampStart; /* 0xf9 */ uint8_t dummy5; /* 0xfb */ uint8_t dummy6; /* 0xfc */ uint8_t dummy7; /* 0xfd */ uint8_t dummy8; /* 0xfe */ uint8_t dummy9; /* 0xff */ }; struct iram_table_v_2_2 { /* flags */ uint16_t flags; /* 0x00 U16 */ /* parameters for ABM2.2 algorithm */ uint8_t min_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x02 U0.8 */ uint8_t max_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x16 U0.8 */ uint8_t bright_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x2a U2.6 */ uint8_t dark_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x3e U2.6 */ uint8_t hybrid_factor[NUM_AGGR_LEVEL]; /* 0x52 U0.8 */ uint8_t contrast_factor[NUM_AGGR_LEVEL]; /* 0x56 U0.8 */ uint8_t deviation_gain[NUM_AGGR_LEVEL]; /* 0x5a U0.8 */ uint8_t iir_curve[NUM_AMBI_LEVEL]; /* 0x5e U0.8 */ uint8_t min_knee[NUM_AGGR_LEVEL]; /* 0x63 U0.8 */ uint8_t max_knee[NUM_AGGR_LEVEL]; /* 0x67 U0.8 */ uint16_t min_abm_backlight; /* 0x6b U16 */ uint8_t pad[19]; /* 0x6d U0.8 */ /* parameters for crgb conversion */ uint16_t crgb_thresh[NUM_POWER_FN_SEGS]; /* 0x80 U3.13 */ uint16_t crgb_offset[NUM_POWER_FN_SEGS]; /* 0x90 U1.15 */ uint16_t crgb_slope[NUM_POWER_FN_SEGS]; /* 0xa0 U4.12 */ /* parameters for custom curve */ /* thresholds for brightness --> backlight */ uint16_t backlight_thresholds[NUM_BL_CURVE_SEGS]; /* 0xb0 U16.0 */ /* offsets for brightness --> backlight */ uint16_t backlight_offsets[NUM_BL_CURVE_SEGS]; /* 0xd0 U16.0 */ /* For reading PSR State directly from IRAM */ uint8_t psr_state; /* 0xf0 */ uint8_t dmcu_mcp_interface_version; /* 0xf1 */ uint8_t dmcu_abm_feature_version; /* 0xf2 */ uint8_t dmcu_psr_feature_version; /* 0xf3 */ uint16_t dmcu_version; /* 0xf4 */ uint8_t dmcu_state; /* 0xf6 */ uint8_t dummy1; /* 0xf7 */ uint8_t dummy2; /* 0xf8 */ uint8_t dummy3; /* 0xf9 */ uint8_t dummy4; /* 0xfa */ uint8_t dummy5; /* 0xfb */ uint8_t dummy6; /* 0xfc */ uint8_t dummy7; /* 0xfd */ uint8_t dummy8; /* 0xfe */ uint8_t dummy9; /* 0xff */ }; #pragma pack(pop) static void fill_backlight_transform_table(struct dmcu_iram_parameters params, struct iram_table_v_2 *table) { unsigned int i; unsigned int num_entries = NUM_BL_CURVE_SEGS; unsigned int lut_index; table->backlight_thresholds[0] = 0; table->backlight_offsets[0] = params.backlight_lut_array[0]; table->backlight_thresholds[num_entries-1] = 0xFFFF; table->backlight_offsets[num_entries-1] = params.backlight_lut_array[params.backlight_lut_array_size - 1]; /* Setup all brightness levels between 0% and 100% exclusive * Fills brightness-to-backlight transform table. Backlight custom curve * describes transform from brightness to backlight. It will be defined * as set of thresholds and set of offsets, together, implying * extrapolation of custom curve into 16 uniformly spanned linear * segments. Each threshold/offset represented by 16 bit entry in * format U4.10. */ for (i = 1; i+1 < num_entries; i++) { lut_index = (params.backlight_lut_array_size - 1) * i / (num_entries - 1); ASSERT(lut_index < params.backlight_lut_array_size); table->backlight_thresholds[i] = cpu_to_be16(DIV_ROUNDUP((i * 65536), num_entries)); table->backlight_offsets[i] = cpu_to_be16(params.backlight_lut_array[lut_index]); } } static void fill_backlight_transform_table_v_2_2(struct dmcu_iram_parameters params, struct iram_table_v_2_2 *table, bool big_endian) { unsigned int i; unsigned int num_entries = NUM_BL_CURVE_SEGS; unsigned int lut_index; table->backlight_thresholds[0] = 0; table->backlight_offsets[0] = params.backlight_lut_array[0]; table->backlight_thresholds[num_entries-1] = 0xFFFF; table->backlight_offsets[num_entries-1] = params.backlight_lut_array[params.backlight_lut_array_size - 1]; /* Setup all brightness levels between 0% and 100% exclusive * Fills brightness-to-backlight transform table. Backlight custom curve * describes transform from brightness to backlight. It will be defined * as set of thresholds and set of offsets, together, implying * extrapolation of custom curve into 16 uniformly spanned linear * segments. Each threshold/offset represented by 16 bit entry in * format U4.10. */ for (i = 1; i+1 < num_entries; i++) { lut_index = DIV_ROUNDUP((i * params.backlight_lut_array_size), num_entries); ASSERT(lut_index < params.backlight_lut_array_size); table->backlight_thresholds[i] = (big_endian) ? cpu_to_be16(DIV_ROUNDUP((i * 65536), num_entries)) : cpu_to_le16(DIV_ROUNDUP((i * 65536), num_entries)); table->backlight_offsets[i] = (big_endian) ? cpu_to_be16(params.backlight_lut_array[lut_index]) : cpu_to_le16(params.backlight_lut_array[lut_index]); } } static void fill_iram_v_2(struct iram_table_v_2 *ram_table, struct dmcu_iram_parameters params) { unsigned int set = params.set; ram_table->min_abm_backlight = cpu_to_be16(params.min_abm_backlight); ram_table->deviation_gain = 0xb3; ram_table->blRampReduction = cpu_to_be16(params.backlight_ramping_reduction); ram_table->blRampStart = cpu_to_be16(params.backlight_ramping_start); ram_table->min_reduction[0][0] = min_reduction_table[abm_config[set][0]]; ram_table->min_reduction[1][0] = min_reduction_table[abm_config[set][0]]; ram_table->min_reduction[2][0] = min_reduction_table[abm_config[set][0]]; ram_table->min_reduction[3][0] = min_reduction_table[abm_config[set][0]]; ram_table->min_reduction[4][0] = min_reduction_table[abm_config[set][0]]; ram_table->max_reduction[0][0] = max_reduction_table[abm_config[set][0]]; ram_table->max_reduction[1][0] = max_reduction_table[abm_config[set][0]]; ram_table->max_reduction[2][0] = max_reduction_table[abm_config[set][0]]; ram_table->max_reduction[3][0] = max_reduction_table[abm_config[set][0]]; ram_table->max_reduction[4][0] = max_reduction_table[abm_config[set][0]]; ram_table->min_reduction[0][1] = min_reduction_table[abm_config[set][1]]; ram_table->min_reduction[1][1] = min_reduction_table[abm_config[set][1]]; ram_table->min_reduction[2][1] = min_reduction_table[abm_config[set][1]]; ram_table->min_reduction[3][1] = min_reduction_table[abm_config[set][1]]; ram_table->min_reduction[4][1] = min_reduction_table[abm_config[set][1]]; ram_table->max_reduction[0][1] = max_reduction_table[abm_config[set][1]]; ram_table->max_reduction[1][1] = max_reduction_table[abm_config[set][1]]; ram_table->max_reduction[2][1] = max_reduction_table[abm_config[set][1]]; ram_table->max_reduction[3][1] = max_reduction_table[abm_config[set][1]]; ram_table->max_reduction[4][1] = max_reduction_table[abm_config[set][1]]; ram_table->min_reduction[0][2] = min_reduction_table[abm_config[set][2]]; ram_table->min_reduction[1][2] = min_reduction_table[abm_config[set][2]]; ram_table->min_reduction[2][2] = min_reduction_table[abm_config[set][2]]; ram_table->min_reduction[3][2] = min_reduction_table[abm_config[set][2]]; ram_table->min_reduction[4][2] = min_reduction_table[abm_config[set][2]]; ram_table->max_reduction[0][2] = max_reduction_table[abm_config[set][2]]; ram_table->max_reduction[1][2] = max_reduction_table[abm_config[set][2]]; ram_table->max_reduction[2][2] = max_reduction_table[abm_config[set][2]]; ram_table->max_reduction[3][2] = max_reduction_table[abm_config[set][2]]; ram_table->max_reduction[4][2] = max_reduction_table[abm_config[set][2]]; ram_table->min_reduction[0][3] = min_reduction_table[abm_config[set][3]]; ram_table->min_reduction[1][3] = min_reduction_table[abm_config[set][3]]; ram_table->min_reduction[2][3] = min_reduction_table[abm_config[set][3]]; ram_table->min_reduction[3][3] = min_reduction_table[abm_config[set][3]]; ram_table->min_reduction[4][3] = min_reduction_table[abm_config[set][3]]; ram_table->max_reduction[0][3] = max_reduction_table[abm_config[set][3]]; ram_table->max_reduction[1][3] = max_reduction_table[abm_config[set][3]]; ram_table->max_reduction[2][3] = max_reduction_table[abm_config[set][3]]; ram_table->max_reduction[3][3] = max_reduction_table[abm_config[set][3]]; ram_table->max_reduction[4][3] = max_reduction_table[abm_config[set][3]]; ram_table->bright_pos_gain[0][0] = 0x20; ram_table->bright_pos_gain[0][1] = 0x20; ram_table->bright_pos_gain[0][2] = 0x20; ram_table->bright_pos_gain[0][3] = 0x20; ram_table->bright_pos_gain[1][0] = 0x20; ram_table->bright_pos_gain[1][1] = 0x20; ram_table->bright_pos_gain[1][2] = 0x20; ram_table->bright_pos_gain[1][3] = 0x20; ram_table->bright_pos_gain[2][0] = 0x20; ram_table->bright_pos_gain[2][1] = 0x20; ram_table->bright_pos_gain[2][2] = 0x20; ram_table->bright_pos_gain[2][3] = 0x20; ram_table->bright_pos_gain[3][0] = 0x20; ram_table->bright_pos_gain[3][1] = 0x20; ram_table->bright_pos_gain[3][2] = 0x20; ram_table->bright_pos_gain[3][3] = 0x20; ram_table->bright_pos_gain[4][0] = 0x20; ram_table->bright_pos_gain[4][1] = 0x20; ram_table->bright_pos_gain[4][2] = 0x20; ram_table->bright_pos_gain[4][3] = 0x20; ram_table->bright_neg_gain[0][0] = 0x00; ram_table->bright_neg_gain[0][1] = 0x00; ram_table->bright_neg_gain[0][2] = 0x00; ram_table->bright_neg_gain[0][3] = 0x00; ram_table->bright_neg_gain[1][0] = 0x00; ram_table->bright_neg_gain[1][1] = 0x00; ram_table->bright_neg_gain[1][2] = 0x00; ram_table->bright_neg_gain[1][3] = 0x00; ram_table->bright_neg_gain[2][0] = 0x00; ram_table->bright_neg_gain[2][1] = 0x00; ram_table->bright_neg_gain[2][2] = 0x00; ram_table->bright_neg_gain[2][3] = 0x00; ram_table->bright_neg_gain[3][0] = 0x00; ram_table->bright_neg_gain[3][1] = 0x00; ram_table->bright_neg_gain[3][2] = 0x00; ram_table->bright_neg_gain[3][3] = 0x00; ram_table->bright_neg_gain[4][0] = 0x00; ram_table->bright_neg_gain[4][1] = 0x00; ram_table->bright_neg_gain[4][2] = 0x00; ram_table->bright_neg_gain[4][3] = 0x00; ram_table->dark_pos_gain[0][0] = 0x00; ram_table->dark_pos_gain[0][1] = 0x00; ram_table->dark_pos_gain[0][2] = 0x00; ram_table->dark_pos_gain[0][3] = 0x00; ram_table->dark_pos_gain[1][0] = 0x00; ram_table->dark_pos_gain[1][1] = 0x00; ram_table->dark_pos_gain[1][2] = 0x00; ram_table->dark_pos_gain[1][3] = 0x00; ram_table->dark_pos_gain[2][0] = 0x00; ram_table->dark_pos_gain[2][1] = 0x00; ram_table->dark_pos_gain[2][2] = 0x00; ram_table->dark_pos_gain[2][3] = 0x00; ram_table->dark_pos_gain[3][0] = 0x00; ram_table->dark_pos_gain[3][1] = 0x00; ram_table->dark_pos_gain[3][2] = 0x00; ram_table->dark_pos_gain[3][3] = 0x00; ram_table->dark_pos_gain[4][0] = 0x00; ram_table->dark_pos_gain[4][1] = 0x00; ram_table->dark_pos_gain[4][2] = 0x00; ram_table->dark_pos_gain[4][3] = 0x00; ram_table->dark_neg_gain[0][0] = 0x00; ram_table->dark_neg_gain[0][1] = 0x00; ram_table->dark_neg_gain[0][2] = 0x00; ram_table->dark_neg_gain[0][3] = 0x00; ram_table->dark_neg_gain[1][0] = 0x00; ram_table->dark_neg_gain[1][1] = 0x00; ram_table->dark_neg_gain[1][2] = 0x00; ram_table->dark_neg_gain[1][3] = 0x00; ram_table->dark_neg_gain[2][0] = 0x00; ram_table->dark_neg_gain[2][1] = 0x00; ram_table->dark_neg_gain[2][2] = 0x00; ram_table->dark_neg_gain[2][3] = 0x00; ram_table->dark_neg_gain[3][0] = 0x00; ram_table->dark_neg_gain[3][1] = 0x00; ram_table->dark_neg_gain[3][2] = 0x00; ram_table->dark_neg_gain[3][3] = 0x00; ram_table->dark_neg_gain[4][0] = 0x00; ram_table->dark_neg_gain[4][1] = 0x00; ram_table->dark_neg_gain[4][2] = 0x00; ram_table->dark_neg_gain[4][3] = 0x00; ram_table->iir_curve[0] = 0x65; ram_table->iir_curve[1] = 0x65; ram_table->iir_curve[2] = 0x65; ram_table->iir_curve[3] = 0x65; ram_table->iir_curve[4] = 0x65; //Gamma 2.4 ram_table->crgb_thresh[0] = cpu_to_be16(0x13b6); ram_table->crgb_thresh[1] = cpu_to_be16(0x1648); ram_table->crgb_thresh[2] = cpu_to_be16(0x18e3); ram_table->crgb_thresh[3] = cpu_to_be16(0x1b41); ram_table->crgb_thresh[4] = cpu_to_be16(0x1d46); ram_table->crgb_thresh[5] = cpu_to_be16(0x1f21); ram_table->crgb_thresh[6] = cpu_to_be16(0x2167); ram_table->crgb_thresh[7] = cpu_to_be16(0x2384); ram_table->crgb_offset[0] = cpu_to_be16(0x2999); ram_table->crgb_offset[1] = cpu_to_be16(0x3999); ram_table->crgb_offset[2] = cpu_to_be16(0x4666); ram_table->crgb_offset[3] = cpu_to_be16(0x5999); ram_table->crgb_offset[4] = cpu_to_be16(0x6333); ram_table->crgb_offset[5] = cpu_to_be16(0x7800); ram_table->crgb_offset[6] = cpu_to_be16(0x8c00); ram_table->crgb_offset[7] = cpu_to_be16(0xa000); ram_table->crgb_slope[0] = cpu_to_be16(0x3147); ram_table->crgb_slope[1] = cpu_to_be16(0x2978); ram_table->crgb_slope[2] = cpu_to_be16(0x23a2); ram_table->crgb_slope[3] = cpu_to_be16(0x1f55); ram_table->crgb_slope[4] = cpu_to_be16(0x1c63); ram_table->crgb_slope[5] = cpu_to_be16(0x1a0f); ram_table->crgb_slope[6] = cpu_to_be16(0x178d); ram_table->crgb_slope[7] = cpu_to_be16(0x15ab); fill_backlight_transform_table( params, ram_table); } static void fill_iram_v_2_2(struct iram_table_v_2_2 *ram_table, struct dmcu_iram_parameters params) { unsigned int set = params.set; ram_table->flags = 0x0; ram_table->min_abm_backlight = cpu_to_be16(params.min_abm_backlight); ram_table->deviation_gain[0] = 0xb3; ram_table->deviation_gain[1] = 0xa8; ram_table->deviation_gain[2] = 0x98; ram_table->deviation_gain[3] = 0x68; ram_table->min_reduction[0][0] = min_reduction_table_v_2_2[abm_config[set][0]]; ram_table->min_reduction[1][0] = min_reduction_table_v_2_2[abm_config[set][0]]; ram_table->min_reduction[2][0] = min_reduction_table_v_2_2[abm_config[set][0]]; ram_table->min_reduction[3][0] = min_reduction_table_v_2_2[abm_config[set][0]]; ram_table->min_reduction[4][0] = min_reduction_table_v_2_2[abm_config[set][0]]; ram_table->max_reduction[0][0] = max_reduction_table_v_2_2[abm_config[set][0]]; ram_table->max_reduction[1][0] = max_reduction_table_v_2_2[abm_config[set][0]]; ram_table->max_reduction[2][0] = max_reduction_table_v_2_2[abm_config[set][0]]; ram_table->max_reduction[3][0] = max_reduction_table_v_2_2[abm_config[set][0]]; ram_table->max_reduction[4][0] = max_reduction_table_v_2_2[abm_config[set][0]]; ram_table->min_reduction[0][1] = min_reduction_table_v_2_2[abm_config[set][1]]; ram_table->min_reduction[1][1] = min_reduction_table_v_2_2[abm_config[set][1]]; ram_table->min_reduction[2][1] = min_reduction_table_v_2_2[abm_config[set][1]]; ram_table->min_reduction[3][1] = min_reduction_table_v_2_2[abm_config[set][1]]; ram_table->min_reduction[4][1] = min_reduction_table_v_2_2[abm_config[set][1]]; ram_table->max_reduction[0][1] = max_reduction_table_v_2_2[abm_config[set][1]]; ram_table->max_reduction[1][1] = max_reduction_table_v_2_2[abm_config[set][1]]; ram_table->max_reduction[2][1] = max_reduction_table_v_2_2[abm_config[set][1]]; ram_table->max_reduction[3][1] = max_reduction_table_v_2_2[abm_config[set][1]]; ram_table->max_reduction[4][1] = max_reduction_table_v_2_2[abm_config[set][1]]; ram_table->min_reduction[0][2] = min_reduction_table_v_2_2[abm_config[set][2]]; ram_table->min_reduction[1][2] = min_reduction_table_v_2_2[abm_config[set][2]]; ram_table->min_reduction[2][2] = min_reduction_table_v_2_2[abm_config[set][2]]; ram_table->min_reduction[3][2] = min_reduction_table_v_2_2[abm_config[set][2]]; ram_table->min_reduction[4][2] = min_reduction_table_v_2_2[abm_config[set][2]]; ram_table->max_reduction[0][2] = max_reduction_table_v_2_2[abm_config[set][2]]; ram_table->max_reduction[1][2] = max_reduction_table_v_2_2[abm_config[set][2]]; ram_table->max_reduction[2][2] = max_reduction_table_v_2_2[abm_config[set][2]]; ram_table->max_reduction[3][2] = max_reduction_table_v_2_2[abm_config[set][2]]; ram_table->max_reduction[4][2] = max_reduction_table_v_2_2[abm_config[set][2]]; ram_table->min_reduction[0][3] = min_reduction_table_v_2_2[abm_config[set][3]]; ram_table->min_reduction[1][3] = min_reduction_table_v_2_2[abm_config[set][3]]; ram_table->min_reduction[2][3] = min_reduction_table_v_2_2[abm_config[set][3]]; ram_table->min_reduction[3][3] = min_reduction_table_v_2_2[abm_config[set][3]]; ram_table->min_reduction[4][3] = min_reduction_table_v_2_2[abm_config[set][3]]; ram_table->max_reduction[0][3] = max_reduction_table_v_2_2[abm_config[set][3]]; ram_table->max_reduction[1][3] = max_reduction_table_v_2_2[abm_config[set][3]]; ram_table->max_reduction[2][3] = max_reduction_table_v_2_2[abm_config[set][3]]; ram_table->max_reduction[3][3] = max_reduction_table_v_2_2[abm_config[set][3]]; ram_table->max_reduction[4][3] = max_reduction_table_v_2_2[abm_config[set][3]]; ram_table->bright_pos_gain[0][0] = 0x20; ram_table->bright_pos_gain[0][1] = 0x20; ram_table->bright_pos_gain[0][2] = 0x20; ram_table->bright_pos_gain[0][3] = 0x20; ram_table->bright_pos_gain[1][0] = 0x20; ram_table->bright_pos_gain[1][1] = 0x20; ram_table->bright_pos_gain[1][2] = 0x20; ram_table->bright_pos_gain[1][3] = 0x20; ram_table->bright_pos_gain[2][0] = 0x20; ram_table->bright_pos_gain[2][1] = 0x20; ram_table->bright_pos_gain[2][2] = 0x20; ram_table->bright_pos_gain[2][3] = 0x20; ram_table->bright_pos_gain[3][0] = 0x20; ram_table->bright_pos_gain[3][1] = 0x20; ram_table->bright_pos_gain[3][2] = 0x20; ram_table->bright_pos_gain[3][3] = 0x20; ram_table->bright_pos_gain[4][0] = 0x20; ram_table->bright_pos_gain[4][1] = 0x20; ram_table->bright_pos_gain[4][2] = 0x20; ram_table->bright_pos_gain[4][3] = 0x20; ram_table->dark_pos_gain[0][0] = 0x00; ram_table->dark_pos_gain[0][1] = 0x00; ram_table->dark_pos_gain[0][2] = 0x00; ram_table->dark_pos_gain[0][3] = 0x00; ram_table->dark_pos_gain[1][0] = 0x00; ram_table->dark_pos_gain[1][1] = 0x00; ram_table->dark_pos_gain[1][2] = 0x00; ram_table->dark_pos_gain[1][3] = 0x00; ram_table->dark_pos_gain[2][0] = 0x00; ram_table->dark_pos_gain[2][1] = 0x00; ram_table->dark_pos_gain[2][2] = 0x00; ram_table->dark_pos_gain[2][3] = 0x00; ram_table->dark_pos_gain[3][0] = 0x00; ram_table->dark_pos_gain[3][1] = 0x00; ram_table->dark_pos_gain[3][2] = 0x00; ram_table->dark_pos_gain[3][3] = 0x00; ram_table->dark_pos_gain[4][0] = 0x00; ram_table->dark_pos_gain[4][1] = 0x00; ram_table->dark_pos_gain[4][2] = 0x00; ram_table->dark_pos_gain[4][3] = 0x00; ram_table->hybrid_factor[0] = 0xff; ram_table->hybrid_factor[1] = 0xff; ram_table->hybrid_factor[2] = 0xff; ram_table->hybrid_factor[3] = 0xc0; ram_table->contrast_factor[0] = 0x99; ram_table->contrast_factor[1] = 0x99; ram_table->contrast_factor[2] = 0x90; ram_table->contrast_factor[3] = 0x80; ram_table->iir_curve[0] = 0x65; ram_table->iir_curve[1] = 0x65; ram_table->iir_curve[2] = 0x65; ram_table->iir_curve[3] = 0x65; ram_table->iir_curve[4] = 0x65; //Gamma 2.2 ram_table->crgb_thresh[0] = cpu_to_be16(0x127c); ram_table->crgb_thresh[1] = cpu_to_be16(0x151b); ram_table->crgb_thresh[2] = cpu_to_be16(0x17d5); ram_table->crgb_thresh[3] = cpu_to_be16(0x1a56); ram_table->crgb_thresh[4] = cpu_to_be16(0x1c83); ram_table->crgb_thresh[5] = cpu_to_be16(0x1e72); ram_table->crgb_thresh[6] = cpu_to_be16(0x20f0); ram_table->crgb_thresh[7] = cpu_to_be16(0x232b); ram_table->crgb_offset[0] = cpu_to_be16(0x2999); ram_table->crgb_offset[1] = cpu_to_be16(0x3999); ram_table->crgb_offset[2] = cpu_to_be16(0x4666); ram_table->crgb_offset[3] = cpu_to_be16(0x5999); ram_table->crgb_offset[4] = cpu_to_be16(0x6333); ram_table->crgb_offset[5] = cpu_to_be16(0x7800); ram_table->crgb_offset[6] = cpu_to_be16(0x8c00); ram_table->crgb_offset[7] = cpu_to_be16(0xa000); ram_table->crgb_slope[0] = cpu_to_be16(0x3609); ram_table->crgb_slope[1] = cpu_to_be16(0x2dfa); ram_table->crgb_slope[2] = cpu_to_be16(0x27ea); ram_table->crgb_slope[3] = cpu_to_be16(0x235d); ram_table->crgb_slope[4] = cpu_to_be16(0x2042); ram_table->crgb_slope[5] = cpu_to_be16(0x1dc3); ram_table->crgb_slope[6] = cpu_to_be16(0x1b1a); ram_table->crgb_slope[7] = cpu_to_be16(0x1910); fill_backlight_transform_table_v_2_2( params, ram_table, true); } static void fill_iram_v_2_3(struct iram_table_v_2_2 *ram_table, struct dmcu_iram_parameters params, bool big_endian) { unsigned int i, j; unsigned int set = params.set; ram_table->flags = 0x0; ram_table->min_abm_backlight = (big_endian) ? cpu_to_be16(params.min_abm_backlight) : cpu_to_le16(params.min_abm_backlight); for (i = 0; i < NUM_AGGR_LEVEL; i++) { ram_table->hybrid_factor[i] = abm_settings[set][i].brightness_gain; ram_table->contrast_factor[i] = abm_settings[set][i].contrast_factor; ram_table->deviation_gain[i] = abm_settings[set][i].deviation_gain; ram_table->min_knee[i] = abm_settings[set][i].min_knee; ram_table->max_knee[i] = abm_settings[set][i].max_knee; for (j = 0; j < NUM_AMBI_LEVEL; j++) { ram_table->min_reduction[j][i] = abm_settings[set][i].min_reduction; ram_table->max_reduction[j][i] = abm_settings[set][i].max_reduction; ram_table->bright_pos_gain[j][i] = abm_settings[set][i].bright_pos_gain; ram_table->dark_pos_gain[j][i] = abm_settings[set][i].dark_pos_gain; } } ram_table->iir_curve[0] = 0x65; ram_table->iir_curve[1] = 0x65; ram_table->iir_curve[2] = 0x65; ram_table->iir_curve[3] = 0x65; ram_table->iir_curve[4] = 0x65; //Gamma 2.2 ram_table->crgb_thresh[0] = bswap16_based_on_endian(big_endian, 0x127c); ram_table->crgb_thresh[1] = bswap16_based_on_endian(big_endian, 0x151b); ram_table->crgb_thresh[2] = bswap16_based_on_endian(big_endian, 0x17d5); ram_table->crgb_thresh[3] = bswap16_based_on_endian(big_endian, 0x1a56); ram_table->crgb_thresh[4] = bswap16_based_on_endian(big_endian, 0x1c83); ram_table->crgb_thresh[5] = bswap16_based_on_endian(big_endian, 0x1e72); ram_table->crgb_thresh[6] = bswap16_based_on_endian(big_endian, 0x20f0); ram_table->crgb_thresh[7] = bswap16_based_on_endian(big_endian, 0x232b); ram_table->crgb_offset[0] = bswap16_based_on_endian(big_endian, 0x2999); ram_table->crgb_offset[1] = bswap16_based_on_endian(big_endian, 0x3999); ram_table->crgb_offset[2] = bswap16_based_on_endian(big_endian, 0x4666); ram_table->crgb_offset[3] = bswap16_based_on_endian(big_endian, 0x5999); ram_table->crgb_offset[4] = bswap16_based_on_endian(big_endian, 0x6333); ram_table->crgb_offset[5] = bswap16_based_on_endian(big_endian, 0x7800); ram_table->crgb_offset[6] = bswap16_based_on_endian(big_endian, 0x8c00); ram_table->crgb_offset[7] = bswap16_based_on_endian(big_endian, 0xa000); ram_table->crgb_slope[0] = bswap16_based_on_endian(big_endian, 0x3609); ram_table->crgb_slope[1] = bswap16_based_on_endian(big_endian, 0x2dfa); ram_table->crgb_slope[2] = bswap16_based_on_endian(big_endian, 0x27ea); ram_table->crgb_slope[3] = bswap16_based_on_endian(big_endian, 0x235d); ram_table->crgb_slope[4] = bswap16_based_on_endian(big_endian, 0x2042); ram_table->crgb_slope[5] = bswap16_based_on_endian(big_endian, 0x1dc3); ram_table->crgb_slope[6] = bswap16_based_on_endian(big_endian, 0x1b1a); ram_table->crgb_slope[7] = bswap16_based_on_endian(big_endian, 0x1910); fill_backlight_transform_table_v_2_2( params, ram_table, big_endian); } bool dmub_init_abm_config(struct resource_pool *res_pool, struct dmcu_iram_parameters params, unsigned int inst) { struct iram_table_v_2_2 ram_table; struct abm_config_table config; unsigned int set = params.set; bool result = false; uint32_t i, j = 0; #if defined(CONFIG_DRM_AMD_DC_DCN) if (res_pool->abm == NULL && res_pool->multiple_abms[inst] == NULL) return false; #else if (res_pool->abm == NULL) return false; #endif memset(&ram_table, 0, sizeof(ram_table)); memset(&config, 0, sizeof(config)); fill_iram_v_2_3(&ram_table, params, false); // We must copy to structure that is aligned to 32-bit for (i = 0; i < NUM_POWER_FN_SEGS; i++) { config.crgb_thresh[i] = ram_table.crgb_thresh[i]; config.crgb_offset[i] = ram_table.crgb_offset[i]; config.crgb_slope[i] = ram_table.crgb_slope[i]; } for (i = 0; i < NUM_BL_CURVE_SEGS; i++) { config.backlight_thresholds[i] = ram_table.backlight_thresholds[i]; config.backlight_offsets[i] = ram_table.backlight_offsets[i]; } for (i = 0; i < NUM_AMBI_LEVEL; i++) config.iir_curve[i] = ram_table.iir_curve[i]; for (i = 0; i < NUM_AMBI_LEVEL; i++) { for (j = 0; j < NUM_AGGR_LEVEL; j++) { config.min_reduction[i][j] = ram_table.min_reduction[i][j]; config.max_reduction[i][j] = ram_table.max_reduction[i][j]; config.bright_pos_gain[i][j] = ram_table.bright_pos_gain[i][j]; config.dark_pos_gain[i][j] = ram_table.dark_pos_gain[i][j]; } } for (i = 0; i < NUM_AGGR_LEVEL; i++) { config.hybrid_factor[i] = ram_table.hybrid_factor[i]; config.contrast_factor[i] = ram_table.contrast_factor[i]; config.deviation_gain[i] = ram_table.deviation_gain[i]; config.min_knee[i] = ram_table.min_knee[i]; config.max_knee[i] = ram_table.max_knee[i]; } if (params.backlight_ramping_override) { for (i = 0; i < NUM_AGGR_LEVEL; i++) { config.blRampReduction[i] = params.backlight_ramping_reduction; config.blRampStart[i] = params.backlight_ramping_start; } } else { for (i = 0; i < NUM_AGGR_LEVEL; i++) { config.blRampReduction[i] = abm_settings[set][i].blRampReduction; config.blRampStart[i] = abm_settings[set][i].blRampStart; } } config.min_abm_backlight = ram_table.min_abm_backlight; #if defined(CONFIG_DRM_AMD_DC_DCN) if (res_pool->multiple_abms[inst]) { result = res_pool->multiple_abms[inst]->funcs->init_abm_config( res_pool->multiple_abms[inst], (char *)(&config), sizeof(struct abm_config_table), inst); } else #endif result = res_pool->abm->funcs->init_abm_config( res_pool->abm, (char *)(&config), sizeof(struct abm_config_table), 0); return result; } bool dmcu_load_iram(struct dmcu *dmcu, struct dmcu_iram_parameters params) { unsigned char ram_table[IRAM_SIZE]; bool result = false; if (dmcu == NULL) return false; if (dmcu && !dmcu->funcs->is_dmcu_initialized(dmcu)) return true; memset(&ram_table, 0, sizeof(ram_table)); if (dmcu->dmcu_version.abm_version == 0x24) { fill_iram_v_2_3((struct iram_table_v_2_2 *)ram_table, params, true); result = dmcu->funcs->load_iram( dmcu, 0, (char *)(&ram_table), IRAM_RESERVE_AREA_START_V2_2); } else if (dmcu->dmcu_version.abm_version == 0x23) { fill_iram_v_2_3((struct iram_table_v_2_2 *)ram_table, params, true); result = dmcu->funcs->load_iram( dmcu, 0, (char *)(&ram_table), IRAM_RESERVE_AREA_START_V2_2); } else if (dmcu->dmcu_version.abm_version == 0x22) { fill_iram_v_2_2((struct iram_table_v_2_2 *)ram_table, params); result = dmcu->funcs->load_iram( dmcu, 0, (char *)(&ram_table), IRAM_RESERVE_AREA_START_V2_2); } else { fill_iram_v_2((struct iram_table_v_2 *)ram_table, params); result = dmcu->funcs->load_iram( dmcu, 0, (char *)(&ram_table), IRAM_RESERVE_AREA_START_V2); if (result) result = dmcu->funcs->load_iram( dmcu, IRAM_RESERVE_AREA_END_V2 + 1, (char *)(&ram_table) + IRAM_RESERVE_AREA_END_V2 + 1, sizeof(ram_table) - IRAM_RESERVE_AREA_END_V2 - 1); } return result; } /* * is_psr_su_specific_panel() - check if sink is AMD vendor-specific PSR-SU * supported eDP device. * * @link: dc link pointer * * Return: true if AMDGPU vendor specific PSR-SU eDP panel */ bool is_psr_su_specific_panel(struct dc_link *link) { bool isPSRSUSupported = false; struct dpcd_caps *dpcd_caps = &link->dpcd_caps; if (dpcd_caps->edp_rev >= DP_EDP_14) { if (dpcd_caps->psr_info.psr_version >= DP_PSR2_WITH_Y_COORD_ET_SUPPORTED) isPSRSUSupported = true; /* * Some panels will report PSR capabilities over additional DPCD bits. * Such panels are approved despite reporting only PSR v3, as long as * the additional bits are reported. */ if (dpcd_caps->sink_dev_id == DP_BRANCH_DEVICE_ID_001CF8) { /* * This is the temporary workaround to disable PSRSU when system turned on * DSC function on the sepcific sink. */ if (dpcd_caps->psr_info.psr_version < DP_PSR2_WITH_Y_COORD_IS_SUPPORTED) isPSRSUSupported = false; else if (dpcd_caps->dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_SUPPORT && ((dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x08) || (dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x07))) isPSRSUSupported = false; else if (dpcd_caps->psr_info.force_psrsu_cap == 0x1) isPSRSUSupported = true; } } return isPSRSUSupported; } /** * mod_power_calc_psr_configs() - calculate/update generic psr configuration fields. * @psr_config: [output], psr configuration structure to be updated * @link: [input] dc link pointer * @stream: [input] dc stream state pointer * * calculate and update the psr configuration fields that are not DM specific, i.e. such * fields which are based on DPCD caps or timing information. To setup PSR in DMUB FW, * this helper is assumed to be called before the call of the DC helper dc_link_setup_psr(). * * PSR config fields to be updated within the helper: * - psr_rfb_setup_time * - psr_sdp_transmit_line_num_deadline * - line_time_in_us * - su_y_granularity * - su_granularity_required * - psr_frame_capture_indication_req * - psr_exit_link_training_required * * PSR config fields that are DM specific and NOT updated within the helper: * - allow_smu_optimizations * - allow_multi_disp_optimizations */ void mod_power_calc_psr_configs(struct psr_config *psr_config, struct dc_link *link, const struct dc_stream_state *stream) { unsigned int num_vblank_lines = 0; unsigned int vblank_time_in_us = 0; unsigned int sdp_tx_deadline_in_us = 0; unsigned int line_time_in_us = 0; struct dpcd_caps *dpcd_caps = &link->dpcd_caps; const int psr_setup_time_step_in_us = 55; /* refer to eDP spec DPCD 0x071h */ /* timing parameters */ num_vblank_lines = stream->timing.v_total - stream->timing.v_addressable - stream->timing.v_border_top - stream->timing.v_border_bottom; vblank_time_in_us = (stream->timing.h_total * num_vblank_lines * 1000) / (stream->timing.pix_clk_100hz / 10); line_time_in_us = ((stream->timing.h_total * 1000) / (stream->timing.pix_clk_100hz / 10)) + 1; /** * psr configuration fields * * as per eDP 1.5 pg. 377 of 459, DPCD 0x071h bits [3:1], psr setup time bits interpreted as below * 000b <--> 330 us (default) * 001b <--> 275 us * 010b <--> 220 us * 011b <--> 165 us * 100b <--> 110 us * 101b <--> 055 us * 110b <--> 000 us */ psr_config->psr_rfb_setup_time = (6 - dpcd_caps->psr_info.psr_dpcd_caps.bits.PSR_SETUP_TIME) * psr_setup_time_step_in_us; if (psr_config->psr_rfb_setup_time > vblank_time_in_us) { link->psr_settings.psr_frame_capture_indication_req = true; link->psr_settings.psr_sdp_transmit_line_num_deadline = num_vblank_lines; } else { sdp_tx_deadline_in_us = vblank_time_in_us - psr_config->psr_rfb_setup_time; /* Set the last possible line SDP may be transmitted without violating the RFB setup time */ link->psr_settings.psr_frame_capture_indication_req = false; link->psr_settings.psr_sdp_transmit_line_num_deadline = sdp_tx_deadline_in_us / line_time_in_us; } psr_config->psr_sdp_transmit_line_num_deadline = link->psr_settings.psr_sdp_transmit_line_num_deadline; psr_config->line_time_in_us = line_time_in_us; psr_config->su_y_granularity = dpcd_caps->psr_info.psr2_su_y_granularity_cap; psr_config->su_granularity_required = dpcd_caps->psr_info.psr_dpcd_caps.bits.SU_GRANULARITY_REQUIRED; psr_config->psr_frame_capture_indication_req = link->psr_settings.psr_frame_capture_indication_req; psr_config->psr_exit_link_training_required = !link->dpcd_caps.psr_info.psr_dpcd_caps.bits.LINK_TRAINING_ON_EXIT_NOT_REQUIRED; } bool mod_power_only_edp(const struct dc_state *context, const struct dc_stream_state *stream) { return context && context->stream_count == 1 && dc_is_embedded_signal(stream->signal); }