1 | |
2 | /* |
3 | * Copyright 2017 Advanced Micro Devices, Inc. |
4 | * |
5 | * Permission is hereby granted, free of charge, to any person obtaining a |
6 | * copy of this software and associated documentation files (the "Software"), |
7 | * to deal in the Software without restriction, including without limitation |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
9 | * and/or sell copies of the Software, and to permit persons to whom the |
10 | * Software is furnished to do so, subject to the following conditions: |
11 | * |
12 | * The above copyright notice and this permission notice shall be included in |
13 | * all copies or substantial portions of the Software. |
14 | * |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
21 | * OTHER DEALINGS IN THE SOFTWARE. |
22 | * |
23 | * Authors: AMD |
24 | * |
25 | */ |
26 | #include "rc_calc.h" |
27 | |
28 | /** |
29 | * calc_rc_params - reads the user's cmdline mode |
30 | * @rc: DC internal DSC parameters |
31 | * @pps: DRM struct with all required DSC values |
32 | * |
33 | * This function expects a drm_dsc_config data struct with all the required DSC |
34 | * values previously filled out by our driver and based on this information it |
35 | * computes some of the DSC values. |
36 | * |
37 | * @note This calculation requires float point operation, most of it executes |
38 | * under kernel_fpu_{begin,end}. |
39 | */ |
40 | void calc_rc_params(struct rc_params *rc, const struct drm_dsc_config *pps) |
41 | { |
42 | #if defined(CONFIG_DRM_AMD_DC_FP) |
43 | enum colour_mode mode; |
44 | enum bits_per_comp bpc; |
45 | bool is_navite_422_or_420; |
46 | u16 drm_bpp = pps->bits_per_pixel; |
47 | int slice_width = pps->slice_width; |
48 | int slice_height = pps->slice_height; |
49 | |
50 | mode = pps->convert_rgb ? CM_RGB : (pps->simple_422 ? CM_444 : |
51 | (pps->native_422 ? CM_422 : |
52 | pps->native_420 ? CM_420 : CM_444)); |
53 | bpc = (pps->bits_per_component == 8) ? BPC_8 : (pps->bits_per_component == 10) |
54 | ? BPC_10 : BPC_12; |
55 | |
56 | is_navite_422_or_420 = pps->native_422 || pps->native_420; |
57 | |
58 | DC_FP_START(); |
59 | _do_calc_rc_params(rc, cm: mode, bpc, drm_bpp, is_navite_422_or_420, |
60 | slice_width, slice_height, |
61 | minor_version: pps->dsc_version_minor); |
62 | DC_FP_END(); |
63 | #endif |
64 | } |
65 | |