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/* 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
#pragma pack(push, 1)
/* 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 */
};
#pragma pack(pop)
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
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