1 /* Copyright 2018 Advanced Micro Devices, Inc. 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a 4 * copy of this software and associated documentation files (the "Software"), 5 * to deal in the Software without restriction, including without limitation 6 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 7 * and/or sell copies of the Software, and to permit persons to whom the 8 * Software is furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 16 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 17 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 18 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 19 * OTHER DEALINGS IN THE SOFTWARE. 20 * 21 * Authors: AMD 22 * 23 */ 24 25 #include "power_helpers.h" 26 #include "dc/inc/hw/dmcu.h" 27 28 #define DIV_ROUNDUP(a, b) (((a)+((b)/2))/(b)) 29 30 /* Possible Min Reduction config from least aggressive to most aggressive 31 * 0 1 2 3 4 5 6 7 8 9 10 11 12 32 * 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 % 33 */ 34 static const unsigned char min_reduction_table[13] = { 35 0xff, 0xfa, 0xf0, 0xf0, 0xd9, 0xcd, 0xc0, 0xb1, 0x99, 0x93, 0x80, 0x82, 0x66}; 36 37 /* Possible Max Reduction configs from least aggressive to most aggressive 38 * 0 1 2 3 4 5 6 7 8 9 10 11 12 39 * 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 % 40 */ 41 static const unsigned char max_reduction_table[13] = { 42 0xf5, 0xe5, 0xd9, 0xcd, 0xb1, 0xa5, 0xa5, 0x80, 0x65, 0x4d, 0x4d, 0x4d, 0x32}; 43 44 /* Predefined ABM configuration sets. We may have different configuration sets 45 * in order to satisfy different power/quality requirements. 46 */ 47 static const unsigned char abm_config[abm_defines_max_config][abm_defines_max_level] = { 48 /* ABM Level 1, ABM Level 2, ABM Level 3, ABM Level 4 */ 49 { 2, 5, 7, 8 }, /* Default - Medium aggressiveness */ 50 { 2, 5, 8, 11 }, /* Alt #1 - Increased aggressiveness */ 51 { 0, 2, 4, 8 }, /* Alt #2 - Minimal aggressiveness */ 52 { 3, 6, 10, 12 }, /* Alt #3 - Super aggressiveness */ 53 }; 54 55 #define NUM_AMBI_LEVEL 5 56 #define NUM_AGGR_LEVEL 4 57 #define NUM_POWER_FN_SEGS 8 58 #define NUM_BL_CURVE_SEGS 16 59 60 #pragma pack(push, 1) 61 /* NOTE: iRAM is 256B in size */ 62 struct iram_table_v_2 { 63 /* flags */ 64 uint16_t flags; /* 0x00 U16 */ 65 66 /* parameters for ABM2.0 algorithm */ 67 uint8_t min_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x02 U0.8 */ 68 uint8_t max_reduction[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x16 U0.8 */ 69 uint8_t bright_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x2a U2.6 */ 70 uint8_t bright_neg_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x3e U2.6 */ 71 uint8_t dark_pos_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x52 U2.6 */ 72 uint8_t dark_neg_gain[NUM_AMBI_LEVEL][NUM_AGGR_LEVEL]; /* 0x66 U2.6 */ 73 uint8_t iir_curve[NUM_AMBI_LEVEL]; /* 0x7a U0.8 */ 74 uint8_t deviation_gain; /* 0x7f U0.8 */ 75 76 /* parameters for crgb conversion */ 77 uint16_t crgb_thresh[NUM_POWER_FN_SEGS]; /* 0x80 U3.13 */ 78 uint16_t crgb_offset[NUM_POWER_FN_SEGS]; /* 0x90 U1.15 */ 79 uint16_t crgb_slope[NUM_POWER_FN_SEGS]; /* 0xa0 U4.12 */ 80 81 /* parameters for custom curve */ 82 /* thresholds for brightness --> backlight */ 83 uint16_t backlight_thresholds[NUM_BL_CURVE_SEGS]; /* 0xb0 U16.0 */ 84 /* offsets for brightness --> backlight */ 85 uint16_t backlight_offsets[NUM_BL_CURVE_SEGS]; /* 0xd0 U16.0 */ 86 87 /* For reading PSR State directly from IRAM */ 88 uint8_t psr_state; /* 0xf0 */ 89 uint8_t dmcu_interface_version; /* 0xf1 */ 90 uint8_t dmcu_date_version_year_b0; /* 0xf2 */ 91 uint8_t dmcu_date_version_year_b1; /* 0xf3 */ 92 uint8_t dmcu_date_version_month; /* 0xf4 */ 93 uint8_t dmcu_date_version_day; /* 0xf5 */ 94 uint8_t dmcu_state; /* 0xf6 */ 95 96 uint16_t blRampReduction; /* 0xf7 */ 97 uint16_t blRampStart; /* 0xf9 */ 98 uint8_t dummy5; /* 0xfb */ 99 uint8_t dummy6; /* 0xfc */ 100 uint8_t dummy7; /* 0xfd */ 101 uint8_t dummy8; /* 0xfe */ 102 uint8_t dummy9; /* 0xff */ 103 }; 104 #pragma pack(pop) 105 106 static uint16_t backlight_8_to_16(unsigned int backlight_8bit) 107 { 108 return (uint16_t)(backlight_8bit * 0x101); 109 } 110 111 static void fill_backlight_transform_table(struct dmcu_iram_parameters params, 112 struct iram_table_v_2 *table) 113 { 114 unsigned int i; 115 unsigned int num_entries = NUM_BL_CURVE_SEGS; 116 unsigned int query_input_8bit; 117 unsigned int query_output_8bit; 118 unsigned int lut_index; 119 120 table->backlight_thresholds[0] = 0; 121 table->backlight_offsets[0] = params.backlight_lut_array[0]; 122 table->backlight_thresholds[num_entries-1] = 0xFFFF; 123 table->backlight_offsets[num_entries-1] = 124 params.backlight_lut_array[params.backlight_lut_array_size - 1]; 125 126 /* Setup all brightness levels between 0% and 100% exclusive 127 * Fills brightness-to-backlight transform table. Backlight custom curve 128 * describes transform from brightness to backlight. It will be defined 129 * as set of thresholds and set of offsets, together, implying 130 * extrapolation of custom curve into 16 uniformly spanned linear 131 * segments. Each threshold/offset represented by 16 bit entry in 132 * format U4.10. 133 */ 134 for (i = 1; i+1 < num_entries; i++) { 135 query_input_8bit = DIV_ROUNDUP((i * 256), num_entries); 136 137 lut_index = (params.backlight_lut_array_size - 1) * i / (num_entries - 1); 138 ASSERT(lut_index < params.backlight_lut_array_size); 139 query_output_8bit = params.backlight_lut_array[lut_index] >> 8; 140 141 table->backlight_thresholds[i] = 142 backlight_8_to_16(query_input_8bit); 143 table->backlight_offsets[i] = 144 backlight_8_to_16(query_output_8bit); 145 } 146 } 147 148 bool dmcu_load_iram(struct dmcu *dmcu, 149 struct dmcu_iram_parameters params) 150 { 151 struct iram_table_v_2 ram_table; 152 unsigned int set = params.set; 153 154 if (dmcu == NULL) 155 return false; 156 157 if (!dmcu->funcs->is_dmcu_initialized(dmcu)) 158 return true; 159 160 memset(&ram_table, 0, sizeof(ram_table)); 161 162 ram_table.flags = 0x0; 163 ram_table.deviation_gain = 0xb3; 164 165 ram_table.blRampReduction = 166 cpu_to_be16(params.backlight_ramping_reduction); 167 ram_table.blRampStart = 168 cpu_to_be16(params.backlight_ramping_start); 169 170 ram_table.min_reduction[0][0] = min_reduction_table[abm_config[set][0]]; 171 ram_table.min_reduction[1][0] = min_reduction_table[abm_config[set][0]]; 172 ram_table.min_reduction[2][0] = min_reduction_table[abm_config[set][0]]; 173 ram_table.min_reduction[3][0] = min_reduction_table[abm_config[set][0]]; 174 ram_table.min_reduction[4][0] = min_reduction_table[abm_config[set][0]]; 175 ram_table.max_reduction[0][0] = max_reduction_table[abm_config[set][0]]; 176 ram_table.max_reduction[1][0] = max_reduction_table[abm_config[set][0]]; 177 ram_table.max_reduction[2][0] = max_reduction_table[abm_config[set][0]]; 178 ram_table.max_reduction[3][0] = max_reduction_table[abm_config[set][0]]; 179 ram_table.max_reduction[4][0] = max_reduction_table[abm_config[set][0]]; 180 181 ram_table.min_reduction[0][1] = min_reduction_table[abm_config[set][1]]; 182 ram_table.min_reduction[1][1] = min_reduction_table[abm_config[set][1]]; 183 ram_table.min_reduction[2][1] = min_reduction_table[abm_config[set][1]]; 184 ram_table.min_reduction[3][1] = min_reduction_table[abm_config[set][1]]; 185 ram_table.min_reduction[4][1] = min_reduction_table[abm_config[set][1]]; 186 ram_table.max_reduction[0][1] = max_reduction_table[abm_config[set][1]]; 187 ram_table.max_reduction[1][1] = max_reduction_table[abm_config[set][1]]; 188 ram_table.max_reduction[2][1] = max_reduction_table[abm_config[set][1]]; 189 ram_table.max_reduction[3][1] = max_reduction_table[abm_config[set][1]]; 190 ram_table.max_reduction[4][1] = max_reduction_table[abm_config[set][1]]; 191 192 ram_table.min_reduction[0][2] = min_reduction_table[abm_config[set][2]]; 193 ram_table.min_reduction[1][2] = min_reduction_table[abm_config[set][2]]; 194 ram_table.min_reduction[2][2] = min_reduction_table[abm_config[set][2]]; 195 ram_table.min_reduction[3][2] = min_reduction_table[abm_config[set][2]]; 196 ram_table.min_reduction[4][2] = min_reduction_table[abm_config[set][2]]; 197 ram_table.max_reduction[0][2] = max_reduction_table[abm_config[set][2]]; 198 ram_table.max_reduction[1][2] = max_reduction_table[abm_config[set][2]]; 199 ram_table.max_reduction[2][2] = max_reduction_table[abm_config[set][2]]; 200 ram_table.max_reduction[3][2] = max_reduction_table[abm_config[set][2]]; 201 ram_table.max_reduction[4][2] = max_reduction_table[abm_config[set][2]]; 202 203 ram_table.min_reduction[0][3] = min_reduction_table[abm_config[set][3]]; 204 ram_table.min_reduction[1][3] = min_reduction_table[abm_config[set][3]]; 205 ram_table.min_reduction[2][3] = min_reduction_table[abm_config[set][3]]; 206 ram_table.min_reduction[3][3] = min_reduction_table[abm_config[set][3]]; 207 ram_table.min_reduction[4][3] = min_reduction_table[abm_config[set][3]]; 208 ram_table.max_reduction[0][3] = max_reduction_table[abm_config[set][3]]; 209 ram_table.max_reduction[1][3] = max_reduction_table[abm_config[set][3]]; 210 ram_table.max_reduction[2][3] = max_reduction_table[abm_config[set][3]]; 211 ram_table.max_reduction[3][3] = max_reduction_table[abm_config[set][3]]; 212 ram_table.max_reduction[4][3] = max_reduction_table[abm_config[set][3]]; 213 214 ram_table.bright_pos_gain[0][0] = 0x20; 215 ram_table.bright_pos_gain[0][1] = 0x20; 216 ram_table.bright_pos_gain[0][2] = 0x20; 217 ram_table.bright_pos_gain[0][3] = 0x20; 218 ram_table.bright_pos_gain[1][0] = 0x20; 219 ram_table.bright_pos_gain[1][1] = 0x20; 220 ram_table.bright_pos_gain[1][2] = 0x20; 221 ram_table.bright_pos_gain[1][3] = 0x20; 222 ram_table.bright_pos_gain[2][0] = 0x20; 223 ram_table.bright_pos_gain[2][1] = 0x20; 224 ram_table.bright_pos_gain[2][2] = 0x20; 225 ram_table.bright_pos_gain[2][3] = 0x20; 226 ram_table.bright_pos_gain[3][0] = 0x20; 227 ram_table.bright_pos_gain[3][1] = 0x20; 228 ram_table.bright_pos_gain[3][2] = 0x20; 229 ram_table.bright_pos_gain[3][3] = 0x20; 230 ram_table.bright_pos_gain[4][0] = 0x20; 231 ram_table.bright_pos_gain[4][1] = 0x20; 232 ram_table.bright_pos_gain[4][2] = 0x20; 233 ram_table.bright_pos_gain[4][3] = 0x20; 234 ram_table.bright_neg_gain[0][1] = 0x00; 235 ram_table.bright_neg_gain[0][2] = 0x00; 236 ram_table.bright_neg_gain[0][3] = 0x00; 237 ram_table.bright_neg_gain[1][0] = 0x00; 238 ram_table.bright_neg_gain[1][1] = 0x00; 239 ram_table.bright_neg_gain[1][2] = 0x00; 240 ram_table.bright_neg_gain[1][3] = 0x00; 241 ram_table.bright_neg_gain[2][0] = 0x00; 242 ram_table.bright_neg_gain[2][1] = 0x00; 243 ram_table.bright_neg_gain[2][2] = 0x00; 244 ram_table.bright_neg_gain[2][3] = 0x00; 245 ram_table.bright_neg_gain[3][0] = 0x00; 246 ram_table.bright_neg_gain[3][1] = 0x00; 247 ram_table.bright_neg_gain[3][2] = 0x00; 248 ram_table.bright_neg_gain[3][3] = 0x00; 249 ram_table.bright_neg_gain[4][0] = 0x00; 250 ram_table.bright_neg_gain[4][1] = 0x00; 251 ram_table.bright_neg_gain[4][2] = 0x00; 252 ram_table.bright_neg_gain[4][3] = 0x00; 253 ram_table.dark_pos_gain[0][0] = 0x00; 254 ram_table.dark_pos_gain[0][1] = 0x00; 255 ram_table.dark_pos_gain[0][2] = 0x00; 256 ram_table.dark_pos_gain[0][3] = 0x00; 257 ram_table.dark_pos_gain[1][0] = 0x00; 258 ram_table.dark_pos_gain[1][1] = 0x00; 259 ram_table.dark_pos_gain[1][2] = 0x00; 260 ram_table.dark_pos_gain[1][3] = 0x00; 261 ram_table.dark_pos_gain[2][0] = 0x00; 262 ram_table.dark_pos_gain[2][1] = 0x00; 263 ram_table.dark_pos_gain[2][2] = 0x00; 264 ram_table.dark_pos_gain[2][3] = 0x00; 265 ram_table.dark_pos_gain[3][0] = 0x00; 266 ram_table.dark_pos_gain[3][1] = 0x00; 267 ram_table.dark_pos_gain[3][2] = 0x00; 268 ram_table.dark_pos_gain[3][3] = 0x00; 269 ram_table.dark_pos_gain[4][0] = 0x00; 270 ram_table.dark_pos_gain[4][1] = 0x00; 271 ram_table.dark_pos_gain[4][2] = 0x00; 272 ram_table.dark_pos_gain[4][3] = 0x00; 273 ram_table.dark_neg_gain[0][0] = 0x00; 274 ram_table.dark_neg_gain[0][1] = 0x00; 275 ram_table.dark_neg_gain[0][2] = 0x00; 276 ram_table.dark_neg_gain[0][3] = 0x00; 277 ram_table.dark_neg_gain[1][0] = 0x00; 278 ram_table.dark_neg_gain[1][1] = 0x00; 279 ram_table.dark_neg_gain[1][2] = 0x00; 280 ram_table.dark_neg_gain[1][3] = 0x00; 281 ram_table.dark_neg_gain[2][0] = 0x00; 282 ram_table.dark_neg_gain[2][1] = 0x00; 283 ram_table.dark_neg_gain[2][2] = 0x00; 284 ram_table.dark_neg_gain[2][3] = 0x00; 285 ram_table.dark_neg_gain[3][0] = 0x00; 286 ram_table.dark_neg_gain[3][1] = 0x00; 287 ram_table.dark_neg_gain[3][2] = 0x00; 288 ram_table.dark_neg_gain[3][3] = 0x00; 289 ram_table.dark_neg_gain[4][0] = 0x00; 290 ram_table.dark_neg_gain[4][1] = 0x00; 291 ram_table.dark_neg_gain[4][2] = 0x00; 292 ram_table.dark_neg_gain[4][3] = 0x00; 293 ram_table.iir_curve[0] = 0x65; 294 ram_table.iir_curve[1] = 0x65; 295 ram_table.iir_curve[2] = 0x65; 296 ram_table.iir_curve[3] = 0x65; 297 ram_table.iir_curve[4] = 0x65; 298 ram_table.crgb_thresh[0] = cpu_to_be16(0x13b6); 299 ram_table.crgb_thresh[1] = cpu_to_be16(0x1648); 300 ram_table.crgb_thresh[2] = cpu_to_be16(0x18e3); 301 ram_table.crgb_thresh[3] = cpu_to_be16(0x1b41); 302 ram_table.crgb_thresh[4] = cpu_to_be16(0x1d46); 303 ram_table.crgb_thresh[5] = cpu_to_be16(0x1f21); 304 ram_table.crgb_thresh[6] = cpu_to_be16(0x2167); 305 ram_table.crgb_thresh[7] = cpu_to_be16(0x2384); 306 ram_table.crgb_offset[0] = cpu_to_be16(0x2999); 307 ram_table.crgb_offset[1] = cpu_to_be16(0x3999); 308 ram_table.crgb_offset[2] = cpu_to_be16(0x4666); 309 ram_table.crgb_offset[3] = cpu_to_be16(0x5999); 310 ram_table.crgb_offset[4] = cpu_to_be16(0x6333); 311 ram_table.crgb_offset[5] = cpu_to_be16(0x7800); 312 ram_table.crgb_offset[6] = cpu_to_be16(0x8c00); 313 ram_table.crgb_offset[7] = cpu_to_be16(0xa000); 314 ram_table.crgb_slope[0] = cpu_to_be16(0x3147); 315 ram_table.crgb_slope[1] = cpu_to_be16(0x2978); 316 ram_table.crgb_slope[2] = cpu_to_be16(0x23a2); 317 ram_table.crgb_slope[3] = cpu_to_be16(0x1f55); 318 ram_table.crgb_slope[4] = cpu_to_be16(0x1c63); 319 ram_table.crgb_slope[5] = cpu_to_be16(0x1a0f); 320 ram_table.crgb_slope[6] = cpu_to_be16(0x178d); 321 ram_table.crgb_slope[7] = cpu_to_be16(0x15ab); 322 323 fill_backlight_transform_table( 324 params, &ram_table); 325 326 return dmcu->funcs->load_iram( 327 dmcu, 0, (char *)(&ram_table), sizeof(ram_table)); 328 } 329