On Mon, 27 Sep 2021, Fangzhi Zuo <Jerry.Zuo@xxxxxxx> wrote: > +/* DSC Extended Capability Branch Total DSC Resources */ > +#define DP_DSC_SUPPORT_AND_DSC_DECODER_COUNT 0x2260 /* 2.0 */ > +# define DP_DSC_DECODER_COUNT_MASK (0b111 << 5) > +# define DP_DSC_DECODER_COUNT_SHIFT 5 > +#define DP_DSC_MAX_SLICE_COUNT_AND_AGGREGATION_0 0x2270 /* 2.0 */ > +# define DP_DSC_DECODER_0_MAXIMUM_SLICE_COUNT_MASK (1 << 0) > +# define DP_DSC_DECODER_0_AGGREGATION_SUPPORT_MASK (0b111 << 1) > +# define DP_DSC_DECODER_0_AGGREGATION_SUPPORT_SHIFT 1 The patch was merged a while back, but only now I noticed the use of binary constants, which in C is a GCC and Clang extension [1][2]. There are some instances in the kernel, but not a whole lot. Do we want to avoid or embrace them going forward? Or meh? BR, Jani. [1] https://gcc.gnu.org/onlinedocs/gcc/Binary-constants.html [2] https://clang.llvm.org/docs/LanguageExtensions.html#c-14-binary-literals -- Jani Nikula, Intel Open Source Graphics Center
