diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c b/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c new file mode 100644 index 000000000000..ca51e83f8764 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c @@ -0,0 +1,258 @@ +#if defined(CONFIG_DRM_AMD_DC_DSC_SUPPORT) + +/* + * Copyright 2017 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 "os_types.h" +#include "rc_calc.h" +#include "qp_tables.h" + +#define table_hash(mode, bpc, max_min) ((mode << 16) | (bpc << 8) | max_min) + +#define MODE_SELECT(val444, val422, val420) \ + (cm == CM_444 || cm == CM_RGB) ? (val444) : (cm == CM_422 ? (val422) : (val420)) + + +#define TABLE_CASE(mode, bpc, max) case (table_hash(mode, BPC_##bpc, max)): \ + table = qp_table_##mode##_##bpc##bpc_##max; \ + table_size = sizeof(qp_table_##mode##_##bpc##bpc_##max)/sizeof(*qp_table_##mode##_##bpc##bpc_##max); \ + break + + +void get_qp_set(qp_set qps, enum colour_mode cm, enum bits_per_comp bpc, enum max_min max_min, float bpp) +{ + int mode = MODE_SELECT(444, 422, 420); + int sel = table_hash(mode, bpc, max_min); + int table_size = 0; + int index; + const struct qp_entry *table = 0L; + + // alias enum + enum { min = MM_MIN, max = MM_MAX }; + switch (sel) { + TABLE_CASE(444, 8, max); + TABLE_CASE(444, 8, min); + TABLE_CASE(444, 10, max); + TABLE_CASE(444, 10, min); + TABLE_CASE(444, 12, max); + TABLE_CASE(444, 12, min); + TABLE_CASE(422, 8, max); + TABLE_CASE(422, 8, min); + TABLE_CASE(422, 10, max); + TABLE_CASE(422, 10, min); + TABLE_CASE(422, 12, max); + TABLE_CASE(422, 12, min); + TABLE_CASE(420, 8, max); + TABLE_CASE(420, 8, min); + TABLE_CASE(420, 10, max); + TABLE_CASE(420, 10, min); + TABLE_CASE(420, 12, max); + TABLE_CASE(420, 12, min); + } + + if (table == 0) + return; + + index = (bpp - table[0].bpp) * 2; + + /* requested size is bigger than the table */ + if (index >= table_size) { + dm_error("ERROR: Requested rc_calc to find a bpp entry that exceeds the table size\n"); + return; + } + + memcpy(qps, table[index].qps, sizeof(qp_set)); +} + +double dsc_roundf(double num) +{ + if (num < 0.0) + num = num - 0.5; + else + num = num + 0.5; + + return (int)(num); +} + +double dsc_ceil(double num) +{ + double retval = (int)num; + + if (retval != num && num > 0) + retval = num + 1; + + return (int)retval; +} + +void get_ofs_set(qp_set ofs, enum colour_mode mode, float bpp) +{ + int *p = ofs; + + if (mode == CM_444 || mode == CM_RGB) { + *p++ = (bpp <= 6) ? (0) : ((((bpp >= 8) && (bpp <= 12))) ? (2) : ((bpp >= 15) ? (10) : ((((bpp > 6) && (bpp < 8))) ? (0 + dsc_roundf((bpp - 6) * (2 / 2.0))) : (2 + dsc_roundf((bpp - 12) * (8 / 3.0)))))); + *p++ = (bpp <= 6) ? (-2) : ((((bpp >= 8) && (bpp <= 12))) ? (0) : ((bpp >= 15) ? (8) : ((((bpp > 6) && (bpp < 8))) ? (-2 + dsc_roundf((bpp - 6) * (2 / 2.0))) : (0 + dsc_roundf((bpp - 12) * (8 / 3.0)))))); + *p++ = (bpp <= 6) ? (-2) : ((((bpp >= 8) && (bpp <= 12))) ? (0) : ((bpp >= 15) ? (6) : ((((bpp > 6) && (bpp < 8))) ? (-2 + dsc_roundf((bpp - 6) * (2 / 2.0))) : (0 + dsc_roundf((bpp - 12) * (6 / 3.0)))))); + *p++ = (bpp <= 6) ? (-4) : ((((bpp >= 8) && (bpp <= 12))) ? (-2) : ((bpp >= 15) ? (4) : ((((bpp > 6) && (bpp < 8))) ? (-4 + dsc_roundf((bpp - 6) * (2 / 2.0))) : (-2 + dsc_roundf((bpp - 12) * (6 / 3.0)))))); + *p++ = (bpp <= 6) ? (-6) : ((((bpp >= 8) && (bpp <= 12))) ? (-4) : ((bpp >= 15) ? (2) : ((((bpp > 6) && (bpp < 8))) ? (-6 + dsc_roundf((bpp - 6) * (2 / 2.0))) : (-4 + dsc_roundf((bpp - 12) * (6 / 3.0)))))); + *p++ = (bpp <= 12) ? (-6) : ((bpp >= 15) ? (0) : (-6 + dsc_roundf((bpp - 12) * (6 / 3.0)))); + *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-2) : (-8 + dsc_roundf((bpp - 12) * (6 / 3.0)))); + *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-4) : (-8 + dsc_roundf((bpp - 12) * (4 / 3.0)))); + *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-6) : (-8 + dsc_roundf((bpp - 12) * (2 / 3.0)))); + *p++ = (bpp <= 12) ? (-10) : ((bpp >= 15) ? (-8) : (-10 + dsc_roundf((bpp - 12) * (2 / 3.0)))); + *p++ = -10; + *p++ = (bpp <= 6) ? (-12) : ((bpp >= 8) ? (-10) : (-12 + dsc_roundf((bpp - 6) * (2 / 2.0)))); + *p++ = -12; + *p++ = -12; + *p++ = -12; + } else if (mode == CM_422) { + *p++ = (bpp <= 8) ? (2) : ((bpp >= 10) ? (10) : (2 + dsc_roundf((bpp - 8) * (8 / 2.0)))); + *p++ = (bpp <= 8) ? (0) : ((bpp >= 10) ? (8) : (0 + dsc_roundf((bpp - 8) * (8 / 2.0)))); + *p++ = (bpp <= 8) ? (0) : ((bpp >= 10) ? (6) : (0 + dsc_roundf((bpp - 8) * (6 / 2.0)))); + *p++ = (bpp <= 8) ? (-2) : ((bpp >= 10) ? (4) : (-2 + dsc_roundf((bpp - 8) * (6 / 2.0)))); + *p++ = (bpp <= 8) ? (-4) : ((bpp >= 10) ? (2) : (-4 + dsc_roundf((bpp - 8) * (6 / 2.0)))); + *p++ = (bpp <= 8) ? (-6) : ((bpp >= 10) ? (0) : (-6 + dsc_roundf((bpp - 8) * (6 / 2.0)))); + *p++ = (bpp <= 8) ? (-8) : ((bpp >= 10) ? (-2) : (-8 + dsc_roundf((bpp - 8) * (6 / 2.0)))); + *p++ = (bpp <= 8) ? (-8) : ((bpp >= 10) ? (-4) : (-8 + dsc_roundf((bpp - 8) * (4 / 2.0)))); + *p++ = (bpp <= 8) ? (-8) : ((bpp >= 10) ? (-6) : (-8 + dsc_roundf((bpp - 8) * (2 / 2.0)))); + *p++ = (bpp <= 8) ? (-10) : ((bpp >= 10) ? (-8) : (-10 + dsc_roundf((bpp - 8) * (2 / 2.0)))); + *p++ = -10; + *p++ = (bpp <= 6) ? (-12) : ((bpp >= 7) ? (-10) : (-12 + dsc_roundf((bpp - 6) * (2.0 / 1)))); + *p++ = -12; + *p++ = -12; + *p++ = -12; + } else { + *p++ = (bpp <= 6) ? (2) : ((bpp >= 8) ? (10) : (2 + dsc_roundf((bpp - 6) * (8 / 2.0)))); + *p++ = (bpp <= 6) ? (0) : ((bpp >= 8) ? (8) : (0 + dsc_roundf((bpp - 6) * (8 / 2.0)))); + *p++ = (bpp <= 6) ? (0) : ((bpp >= 8) ? (6) : (0 + dsc_roundf((bpp - 6) * (6 / 2.0)))); + *p++ = (bpp <= 6) ? (-2) : ((bpp >= 8) ? (4) : (-2 + dsc_roundf((bpp - 6) * (6 / 2.0)))); + *p++ = (bpp <= 6) ? (-4) : ((bpp >= 8) ? (2) : (-4 + dsc_roundf((bpp - 6) * (6 / 2.0)))); + *p++ = (bpp <= 6) ? (-6) : ((bpp >= 8) ? (0) : (-6 + dsc_roundf((bpp - 6) * (6 / 2.0)))); + *p++ = (bpp <= 6) ? (-8) : ((bpp >= 8) ? (-2) : (-8 + dsc_roundf((bpp - 6) * (6 / 2.0)))); + *p++ = (bpp <= 6) ? (-8) : ((bpp >= 8) ? (-4) : (-8 + dsc_roundf((bpp - 6) * (4 / 2.0)))); + *p++ = (bpp <= 6) ? (-8) : ((bpp >= 8) ? (-6) : (-8 + dsc_roundf((bpp - 6) * (2 / 2.0)))); + *p++ = (bpp <= 6) ? (-10) : ((bpp >= 8) ? (-8) : (-10 + dsc_roundf((bpp - 6) * (2 / 2.0)))); + *p++ = -10; + *p++ = (bpp <= 4) ? (-12) : ((bpp >= 5) ? (-10) : (-12 + dsc_roundf((bpp - 4) * (2 / 1.0)))); + *p++ = -12; + *p++ = -12; + *p++ = -12; + } +} + +int median3(int a, int b, int c) +{ + if (a > b) + swap(a, b); + if (b > c) + swap(b, c); + if (a > b) + swap(b, c); + + return b; +} + +void calc_rc_params(struct rc_params *rc, enum colour_mode cm, enum bits_per_comp bpc, float bpp, int slice_width, int slice_height, int minor_version) +{ + float bpp_group; + float initial_xmit_delay_factor; + int source_bpp; + int padding_pixels; + int i; + + rc->rc_quant_incr_limit0 = ((bpc == BPC_8) ? 11 : (bpc == BPC_10 ? 15 : 19)) - ((minor_version == 1 && cm == CM_444) ? 1 : 0); + rc->rc_quant_incr_limit1 = ((bpc == BPC_8) ? 11 : (bpc == BPC_10 ? 15 : 19)) - ((minor_version == 1 && cm == CM_444) ? 1 : 0); + + bpp_group = MODE_SELECT(bpp, bpp * 2.0, bpp * 2.0); + + switch (cm) { + case CM_420: + rc->initial_fullness_offset = (bpp >= 6) ? (2048) : ((bpp <= 4) ? (6144) : ((((bpp > 4) && (bpp <= 5))) ? (6144 - dsc_roundf((bpp - 4) * (512))) : (5632 - dsc_roundf((bpp - 5) * (3584))))); + rc->first_line_bpg_offset = median3(0, (12 + (int) (0.09 * min(34, slice_height - 8))), (int)((3 * bpc * 3) - (3 * bpp_group))); + rc->second_line_bpg_offset = median3(0, 12, (int)((3 * bpc * 3) - (3 * bpp_group))); + break; + case CM_422: + rc->initial_fullness_offset = (bpp >= 8) ? (2048) : ((bpp <= 7) ? (5632) : (5632 - dsc_roundf((bpp - 7) * (3584)))); + rc->first_line_bpg_offset = median3(0, (12 + (int) (0.09 * min(34, slice_height - 8))), (int)((3 * bpc * 4) - (3 * bpp_group))); + rc->second_line_bpg_offset = 0; + break; + case CM_444: + case CM_RGB: + rc->initial_fullness_offset = (bpp >= 12) ? (2048) : ((bpp <= 8) ? (6144) : ((((bpp > 8) && (bpp <= 10))) ? (6144 - dsc_roundf((bpp - 8) * (512 / 2))) : (5632 - dsc_roundf((bpp - 10) * (3584 / 2))))); + rc->first_line_bpg_offset = median3(0, (12 + (int) (0.09 * min(34, slice_height - 8))), (int)(((3 * bpc + (cm == CM_444 ? 0 : 2)) * 3) - (3 * bpp_group))); + rc->second_line_bpg_offset = 0; + break; + } + + initial_xmit_delay_factor = (cm == CM_444 || cm == CM_RGB) ? 1.0 : 2.0; + rc->initial_xmit_delay = dsc_roundf(8192.0/2.0/bpp/initial_xmit_delay_factor); + + if (cm == CM_422 || cm == CM_420) + slice_width /= 2; + + padding_pixels = ((slice_width % 3) != 0) ? (3 - (slice_width % 3)) * (rc->initial_xmit_delay / slice_width) : 0; + if (3 * bpp_group >= (((rc->initial_xmit_delay + 2) / 3) * (3 + (cm == CM_422)))) { + if ((rc->initial_xmit_delay + padding_pixels) % 3 == 1) + rc->initial_xmit_delay++; + } + + source_bpp = MODE_SELECT(bpc * 3, bpc * 2, bpc * 1.5); + + rc->flatness_min_qp = ((bpc == BPC_8) ? (3) : ((bpc == BPC_10) ? (7) : (11))) - ((minor_version == 1 && cm == CM_444) ? 1 : 0); + rc->flatness_max_qp = ((bpc == BPC_8) ? (12) : ((bpc == BPC_10) ? (16) : (20))) - ((minor_version == 1 && cm == CM_444) ? 1 : 0); + rc->flatness_det_thresh = 2 << (bpc - 8); + + get_qp_set(rc->qp_min, cm, bpc, MM_MIN, bpp); + get_qp_set(rc->qp_max, cm, bpc, MM_MAX, bpp); + if (cm == CM_444 && minor_version == 1) { + for (i = 0; i < QP_SET_SIZE; ++i) { + rc->qp_min[i] = rc->qp_min[i] > 0 ? rc->qp_min[i] - 1 : 0; + rc->qp_max[i] = rc->qp_max[i] > 0 ? rc->qp_max[i] - 1 : 0; + } + } + get_ofs_set(rc->ofs, cm, bpp); + + /* fixed parameters */ + rc->rc_model_size = 8192; + rc->rc_edge_factor = 6; + rc->rc_tgt_offset_hi = 3; + rc->rc_tgt_offset_lo = 3; + + rc->rc_buf_thresh[0] = 896; + rc->rc_buf_thresh[1] = 1792; + rc->rc_buf_thresh[2] = 2688; + rc->rc_buf_thresh[3] = 3584; + rc->rc_buf_thresh[4] = 4480; + rc->rc_buf_thresh[5] = 5376; + rc->rc_buf_thresh[6] = 6272; + rc->rc_buf_thresh[7] = 6720; + rc->rc_buf_thresh[8] = 7168; + rc->rc_buf_thresh[9] = 7616; + rc->rc_buf_thresh[10] = 7744; + rc->rc_buf_thresh[11] = 7872; + rc->rc_buf_thresh[12] = 8000; + rc->rc_buf_thresh[13] = 8064; +} + +#endif |