Às 13:45 de 14/07/22, Maíra Canal escreveu:
> Based on the dml30_CalculateWriteBackDISPCLK, it separates the
> DISPCLK calculations on three variables, making no functional changes, in order
> to make it more readable and better express that three values are being compared
> on dml_max.
>
> Signed-off-by: Maíra Canal <mairacanal@xxxxxxxxxx>
> ---
> .../drm/amd/display/dc/dml/display_mode_vba.c | 31 ++++++++++++-------
> 1 file changed, 20 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
> index c5a0a3649e9a..5fc1d16a2e15 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
> +++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c
> @@ -1113,20 +1113,29 @@ double CalculateWriteBackDISPCLK(
> unsigned int HTotal,
> unsigned int WritebackChromaLineBufferWidth)
> {
> - double CalculateWriteBackDISPCLK = 1.01 * PixelClock * dml_max(
> - dml_ceil(WritebackLumaHTaps / 4.0, 1) / WritebackHRatio,
> - dml_max((WritebackLumaVTaps * dml_ceil(1.0 / WritebackVRatio, 1) * dml_ceil(WritebackDestinationWidth / 4.0, 1)
> +
> + double DISPCLK_H = 0, DISPCLK_V = 0, DISPCLK_HB = 0;
> + double CalculateWriteBackDISPCLK = 0;
> +
Small nit: no need to initialize to 0 those variables here. They are
getting initialized bellow anyway.
> + DISPCLK_H = dml_ceil(WritebackLumaHTaps / 4.0, 1) / WritebackHRatio;
> + DISPCLK_V = (WritebackLumaVTaps * dml_ceil(1.0 / WritebackVRatio, 1) * dml_ceil(WritebackDestinationWidth / 4.0, 1)
> + dml_ceil(WritebackDestinationWidth / 4.0, 1)) / (double) HTotal + dml_ceil(1.0 / WritebackVRatio, 1)
> - * (dml_ceil(WritebackLumaVTaps / 4.0, 1) + 4.0) / (double) HTotal,
> - dml_ceil(1.0 / WritebackVRatio, 1) * WritebackDestinationWidth / (double) HTotal));
> + * (dml_ceil(WritebackLumaVTaps / 4.0, 1) + 4.0) / (double) HTotal;
> + DISPCLK_HB = dml_ceil(1.0 / WritebackVRatio, 1) * WritebackDestinationWidth / (double) HTotal;
> +
> + CalculateWriteBackDISPCLK = 1.01 * PixelClock * dml_max3(DISPCLK_H, DISPCLK_V, DISPCLK_HB);
> +
> if (WritebackPixelFormat != dm_444_32) {
> - CalculateWriteBackDISPCLK = dml_max(CalculateWriteBackDISPCLK, 1.01 * PixelClock * dml_max(
> - dml_ceil(WritebackChromaHTaps / 2.0, 1) / (2 * WritebackHRatio),
> - dml_max((WritebackChromaVTaps * dml_ceil(1 / (2 * WritebackVRatio), 1) * dml_ceil(WritebackDestinationWidth / 2.0 / 2.0, 1)
> - + dml_ceil(WritebackDestinationWidth / 2.0 / WritebackChromaLineBufferWidth, 1)) / HTotal
> - + dml_ceil(1 / (2 * WritebackVRatio), 1) * (dml_ceil(WritebackChromaVTaps / 4.0, 1) + 4) / HTotal,
> - dml_ceil(1.0 / (2 * WritebackVRatio), 1) * WritebackDestinationWidth / 2.0 / HTotal)));
> + DISPCLK_H = dml_ceil(WritebackChromaHTaps / 2.0, 1) / (2 * WritebackHRatio);
> + DISPCLK_V = (WritebackChromaVTaps * dml_ceil(1 / (2 * WritebackVRatio), 1) *
> + dml_ceil(WritebackDestinationWidth / 4.0, 1) +
> + dml_ceil(WritebackDestinationWidth / 2.0 / WritebackChromaLineBufferWidth, 1)) / HTotal +
> + dml_ceil(1 / (2 * WritebackVRatio), 1) *(dml_ceil(WritebackChromaVTaps / 4.0, 1) + 4) / HTotal;
> + DISPCLK_HB = dml_ceil(1.0 / (2 * WritebackVRatio), 1) * WritebackDestinationWidth / 2.0 / HTotal;
> + CalculateWriteBackDISPCLK = dml_max(CalculateWriteBackDISPCLK,
> + 1.01 * PixelClock * dml_max3(DISPCLK_H, DISPCLK_V, DISPCLK_HB));
> }
> +
> return CalculateWriteBackDISPCLK;
> }
>
