/*
* 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)
{
#if defined (CONFIG_DRM_AMD_DC_FP)
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();
#endif
}
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