Line data    Source code

       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           0 : void calc_rc_params(struct rc_params *rc, const struct drm_dsc_config *pps)
      41             : {
      42             :         enum colour_mode mode;
      43             :         enum bits_per_comp bpc;
      44             :         bool is_navite_422_or_420;
      45           0 :         u16 drm_bpp = pps->bits_per_pixel;
      46           0 :         int slice_width  = pps->slice_width;
      47           0 :         int slice_height = pps->slice_height;
      48             : 
      49           0 :         mode = pps->convert_rgb ? CM_RGB : (pps->simple_422  ? CM_444 :
      50           0 :                                            (pps->native_422  ? CM_422 :
      51           0 :                                             pps->native_420  ? CM_420 : CM_444));
      52           0 :         bpc = (pps->bits_per_component == 8) ? BPC_8 : (pps->bits_per_component == 10)
      53             :                                              ? BPC_10 : BPC_12;
      54             : 
      55           0 :         is_navite_422_or_420 = pps->native_422 || pps->native_420;
      56             : 
      57           0 :         DC_FP_START();
      58           0 :         _do_calc_rc_params(rc, mode, bpc, drm_bpp, is_navite_422_or_420,
      59             :                            slice_width, slice_height,
      60           0 :                            pps->dsc_version_minor);
      61           0 :         DC_FP_END();
      62           0 : }