[Your MUA messed up the quoting, FTFY below.] On Wed, 22 Feb 2017, "Navare, Manasi D" <manasi.d.navare@xxxxxxxxx> wrote: > > On Fri, 17 Feb 2017, Manasi Navare <manasi.d.navare@xxxxxxxxx> wrote: > >> Display stream compression is supported on DP 1.4 DP devices. This > >> patch adds the corersponding DPCD register definitions for DSC. > >> > >> v2: > >> * Rebased on drm-tip > >> > >> Signed-off-by: Manasi Navare <manasi.d.navare@xxxxxxxxx> > >> Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx> > >> Cc: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx> > >> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx > > > > Tedious work to cross check this stuff against the spec... found one > > real issue; while at it please fix a few nitpicks that I would > > otherwise have ignored. > > > > BR, > > Jani. > > > > > >> --- > >> include/drm/drm_dp_helper.h | 102 > >> ++++++++++++++++++++++++++++++++++++++++++++ > >> 1 file changed, 102 insertions(+) > >> > >> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h > >> index ba89295..4c1fc26 100644 > >> --- a/include/drm/drm_dp_helper.h > >> +++ b/include/drm/drm_dp_helper.h > >> @@ -179,6 +179,108 @@ > >> > >> #define DP_GUID 0x030 /* 1.2 */ > >> > >> +#define DP_DSC_SUPPORT 0x060 /* DP 1.4 */ > >> +# define DP_DSC_DECOMPRESSION_IS_SUPPORTED (1 << 0) > >> + > >> +#define DP_DSC_REV 0x061 > >> +# define DP_DSC_MAJOR_MASK (15 << 0) > >> +# define DP_DSC_MINOR_MASK (15 << 4) > >> +# define DP_DSC_MINOR_SHIFT 4 > > > > Nitpick: Hex is preferred for masks. Same for all masks > > below. MAJOR_SHIFT for completeness. > > > So should I add the MAJOR_SHIFT as well even though it will just 0? Yes, 0 is not special here. Having it is also self-documenting, so you don't have to look up the DP spec to check. > > > > > >> + > >> +#define DP_DSC_RC_BUF_BLK_SIZE 0x062 > >> +# define DP_DSC_RC_BUF_BLK_SIZE_1 0x0 > >> +# define DP_DSC_RC_BUF_BLK_SIZE_4 0x1 > >> +# define DP_DSC_RC_BUF_BLK_SIZE_16 0x2 > >> +# define DP_DSC_RC_BUF_BLK_SIZE_64 0x3 > >> + > >> +#define DP_DSC_RC_BUF_SIZE 0x063 > >> + > >> +#define DP_DSC_SLICE_CAP_1 0x064 > >> +# define DP_DSC_1_PER_DP_DSC_SINK (1 << 0) > >> +# define DP_DSC_2_PER_DP_DSC_SINK (1 << 1) > >> +# define DP_DSC_4_PER_DP_DSC_SINK (1 << 3) > >> +# define DP_DSC_6_PER_DP_DSC_SINK (1 << 4) > >> +# define DP_DSC_8_PER_DP_DSC_SINK (1 << 5) > >> +# define DP_DSC_10_PER_DP_DSC_SINK (1 << 6) > >> +# define DP_DSC_12_PER_DP_DSC_SINK (1 << 7) > >> + > >> +#define DP_DSC_LINE_BUF_BIT_DEPTH 0x065 > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_MASK (15 << 0) > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_9 0x0 > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_10 0x1 > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_11 0x2 > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_12 0x3 > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_13 0x4 > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_14 0x5 > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_15 0x6 > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_16 0x7 > >> +# define DP_DSC_LINE_BUF_BIT_DEPTH_8 0x8 > >> + > >> +#define DP_DSC_BLK_PREDICTION_SUPPORT 0x066 > >> +# define DP_DSC_BLK_PREDICTION_IS_SUPPORTED (1 << 0) > >> + > >> +#define DP_DSC_MAX_BITS_PER_PIXEL_LOW 0x067 /* eDP 1.4 */ > >> + > >> +#define DP_DSC_MAX_BITS_PER_PIXEL_HI 0x068 /* eDP 1.4 */ > >> + > >> +#define DP_DSC_DEC_COLOR_FORMAT_CAP 0x069 > >> +# define DP_DSC_RGB (1 << 0) > >> +# define DP_DSC_YCbCr444 (1 << 1) > >> +# define DP_DSC_YCbCr422_Simple (1 << 2) > >> +# define DP_DSC_YCbCr422_Native (1 << 3) > >> +# define DP_DSC_YCbCr420_Native (1 << 4) > >> + > >> +#define DP_DSC_DEC_COLOR_DEPTH_CAP 0x06A > >> +# define DP_DSC_8_BPC (1 << 1) > >> +# define DP_DSC_10_BPC (1 << 2) > >> +# define DP_DSC_12_BPC (1 >> 3) > > > > Oops, shifting to wrong direction! > > Oops, yes that is my mistake, I will fix the shift direction. > > >> + > >> +#define DP_DSC_PEAK_THROUGHPUT 0x06B > >> +# define DP_DSC_THROUGHPUT_MODE_0_340 0x1 > >> +# define DP_DSC_THROUGHPUT_MODE_0_400 0x2 > >> +# define DP_DSC_THROUGHPUT_MODE_0_450 0x3 > >> +# define DP_DSC_THROUGHPUT_MODE_0_500 0x4 > >> +# define DP_DSC_THROUGHPUT_MODE_0_550 0x5 > >> +# define DP_DSC_THROUGHPUT_MODE_0_600 0x6 > >> +# define DP_DSC_THROUGHPUT_MODE_0_650 0x7 > >> +# define DP_DSC_THROUGHPUT_MODE_0_700 0x8 > >> +# define DP_DSC_THROUGHPUT_MODE_0_750 0x9 > >> +# define DP_DSC_THROUGHPUT_MODE_0_800 0xA > >> +# define DP_DSC_THROUGHPUT_MODE_0_850 0xB > >> +# define DP_DSC_THROUGHPUT_MODE_0_900 0xC > >> +# define DP_DSC_THROUGHPUT_MODE_0_950 0xD > >> +# define DP_DSC_THROUGHPUT_MODE_0_1000 0xE > > > > Nitpick: MODE_0_MASK and MODE_0_SHIFT for completeness. Seems > > inconsistent to use hex for MODE_0 values and dec for MODE_1 values. > > For Mode 0, it would be all these values shifted by 0, should I add > the shifts by 0 for consistency with MODE_1? Nah, that I think is not needed, but I could go both ways. (However for defining bits we usually use BIT(0) or (1 << 0) rather than plain 1.) > And yes I will add MODE_0 MASK and SHIFT. Thanks. BR, Jani. > > Regards > Manasi > > > >> +# define DP_DSC_THROUGHPUT_MODE_1_MASK (15 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_SHIFT 4 > >> +# define DP_DSC_THROUGHPUT_MODE_1_340 (1 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_400 (2 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_450 (3 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_500 (4 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_550 (5 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_600 (6 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_650 (7 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_700 (8 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_750 (9 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_800 (10 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_850 (11 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_900 (12 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_950 (13 << 4) > >> +# define DP_DSC_THROUGHPUT_MODE_1_1000 (14 << 4) > >> + > >> +#define DP_DSC_MAX_SLICE_WIDTH 0x06C > >> + > >> +#define DP_DSC_SLICE_CAP_2 0x06D > >> +# define DP_DSC_16_PER_DP_DSC_SINK (1 << 0) > >> +# define DP_DSC_20_PER_DP_DSC_SINK (1 << 1) > >> +# define DP_DSC_24_PER_DP_DSC_SINK (1 << 2) > >> + > >> +#define DP_DSC_BITS_PER_PIXEL_INC 0x06F > >> +# define DP_DSC_BITS_PER_PIXEL_1_16 0x0 > >> +# define DP_DSC_BITS_PER_PIXEL_1_8 0x1 > >> +# define DP_DSC_BITS_PER_PIXEL_1_4 0x2 > >> +# define DP_DSC_BITS_PER_PIXEL_1_2 0x3 > >> +# define DP_DSC_BITS_PER_PIXEL_1 0x4 > >> + > >> #define DP_PSR_SUPPORT 0x070 /* XXX 1.2? */ > >> # define DP_PSR_IS_SUPPORTED 1 > >> # define DP_PSR2_IS_SUPPORTED 2 /* eDP 1.4 */ > > > > -- > > Jani Nikula, Intel Open Source Technology Center > > -- > Jani Nikula, Intel Open Source Technology Center > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
