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path: root/drivers/gpu/drm/amd/display/modules/power/power_helpers.c
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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.c326
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));
+}