diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/power/power_helpers.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/power/power_helpers.c | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/power/power_helpers.c b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c new file mode 100644 index 000000000000..00f63b7dd32f --- /dev/null +++ b/drivers/gpu/drm/amd/display/modules/power/power_helpers.c @@ -0,0 +1,326 @@ +/* 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" + +#define DIV_ROUNDUP(a, b) (((a)+((b)/2))/(b)) + +/* 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}; + +/* 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 */ +}; + +#define NUM_AMBI_LEVEL 5 +#define NUM_AGGR_LEVEL 4 +#define NUM_POWER_FN_SEGS 8 +#define NUM_BL_CURVE_SEGS 16 + +/* NOTE: iRAM is 256B in size */ +struct iram_table_v_2 { + /* flags */ + uint16_t flags; /* 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_interface_version; /* 0xf1 */ + uint8_t dmcu_date_version_year_b0; /* 0xf2 */ + uint8_t dmcu_date_version_year_b1; /* 0xf3 */ + uint8_t dmcu_date_version_month; /* 0xf4 */ + uint8_t dmcu_date_version_day; /* 0xf5 */ + 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 */ +}; + +static uint16_t backlight_8_to_16(unsigned int backlight_8bit) +{ + return (uint16_t)(backlight_8bit * 0x101); +} + +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 query_input_8bit; + unsigned int query_output_8bit; + 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++) { + query_input_8bit = DIV_ROUNDUP((i * 256), num_entries); + + lut_index = (params.backlight_lut_array_size - 1) * i / (num_entries - 1); + ASSERT(lut_index < params.backlight_lut_array_size); + query_output_8bit = params.backlight_lut_array[lut_index] >> 8; + + table->backlight_thresholds[i] = + backlight_8_to_16(query_input_8bit); + table->backlight_offsets[i] = + backlight_8_to_16(query_output_8bit); + } +} + +bool dmcu_load_iram(struct dmcu *dmcu, + struct dmcu_iram_parameters params) +{ + struct iram_table_v_2 ram_table; + unsigned int set = params.set; + + if (dmcu == NULL) + return false; + + if (!dmcu->funcs->is_dmcu_initialized(dmcu)) + return true; + + memset(&ram_table, 0, sizeof(ram_table)); + + ram_table.flags = 0x0; + 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][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; + 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); + + return dmcu->funcs->load_iram( + dmcu, 0, (char *)(&ram_table), sizeof(ram_table)); +} |