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 | 43 |
1 files changed, 0 insertions, 43 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 index c6a1cd80aeae..7b294f637881 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/rc_calc.c @@ -284,26 +284,6 @@ static u32 _do_bytes_per_pixel_calc(int slice_width, u16 drm_bpp, return bytes_per_pixel; } -static u32 _do_calc_dsc_bpp_x16(u32 stream_bandwidth_kbps, u32 pix_clk_100hz, - u32 bpp_increment_div) -{ - u32 dsc_target_bpp_x16; - float f_dsc_target_bpp; - float f_stream_bandwidth_100bps; - // bpp_increment_div is actually precision - u32 precision = bpp_increment_div; - - f_stream_bandwidth_100bps = stream_bandwidth_kbps * 10.0f; - f_dsc_target_bpp = f_stream_bandwidth_100bps / pix_clk_100hz; - - // Round down to the nearest precision stop to bring it into DSC spec - // range - dsc_target_bpp_x16 = (u32)(f_dsc_target_bpp * precision); - dsc_target_bpp_x16 = (dsc_target_bpp_x16 * 16) / precision; - - return dsc_target_bpp_x16; -} - /** * calc_rc_params - reads the user's cmdline mode * @rc: DC internal DSC parameters @@ -367,26 +347,3 @@ u32 calc_dsc_bytes_per_pixel(const struct drm_dsc_config *pps) DC_FP_END(); return ret; } - -/** - * calc_dsc_bpp_x16 - retrieve the dsc bits per pixel - * @stream_bandwidth_kbps: - * @pix_clk_100hz: - * @bpp_increment_div: - * - * Calculate the total of bits per pixel for DSC configuration. - * - * @note This calculation requires float point operation, most of it executes - * under kernel_fpu_{begin,end}. - */ -u32 calc_dsc_bpp_x16(u32 stream_bandwidth_kbps, u32 pix_clk_100hz, - u32 bpp_increment_div) -{ - u32 dsc_bpp; - - DC_FP_START(); - dsc_bpp = _do_calc_dsc_bpp_x16(stream_bandwidth_kbps, pix_clk_100hz, - bpp_increment_div); - DC_FP_END(); - return dsc_bpp; -} |