/* * 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 "rc_calc.h" /** * calc_rc_params - reads the user's cmdline mode * @rc: DC internal DSC parameters * @pps: DRM struct with all required DSC values * * This function expects a drm_dsc_config data struct with all the required DSC * values previously filled out by our driver and based on this information it * computes some of the DSC values. * * @note This calculation requires float point operation, most of it executes * under kernel_fpu_{begin,end}. */ void calc_rc_params(struct rc_params *rc, const struct drm_dsc_config *pps) { enum colour_mode mode; enum bits_per_comp bpc; bool is_navite_422_or_420; u16 drm_bpp = pps->bits_per_pixel; int slice_width = pps->slice_width; int slice_height = pps->slice_height; mode = pps->convert_rgb ? CM_RGB : (pps->simple_422 ? CM_444 : (pps->native_422 ? CM_422 : pps->native_420 ? CM_420 : CM_444)); bpc = (pps->bits_per_component == 8) ? BPC_8 : (pps->bits_per_component == 10) ? BPC_10 : BPC_12; is_navite_422_or_420 = pps->native_422 || pps->native_420; DC_FP_START(); _do_calc_rc_params(rc, mode, bpc, drm_bpp, is_navite_422_or_420, slice_width, slice_height, pps->dsc_version_minor); DC_FP_END(); }