[Intel-gfx] [PATCH v3] drm: Add DPCD definitions for DP 1.4 DSC feature
Ander Conselvan De Oliveira
conselvan2 at gmail.com
Thu Mar 16 13:47:46 UTC 2017
On Tue, 2017-03-14 at 13:01 -0700, Manasi Navare wrote:
> From: "Navare, Manasi D" <manasi.d.navare at intel.com>
>
> Display stream compression is supported on DP 1.4 DP
> devices. This patch adds the corersponding DPCD
> register definitions for DSC.
>
> v3:
> * Add some SHIFTS and MASKS for uniformity (Jani Nikula)
> v2:
> * Rebased on drm-tip
>
> Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
> Cc: Jani Nikula <jani.nikula at linux.intel.com>
> Cc: Paulo Zanoni <paulo.r.zanoni at intel.com>
> Cc: dri-devel at lists.freedesktop.org
> ---
> include/drm/drm_dp_helper.h | 105 ++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 105 insertions(+)
>
> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> index c0bd0d7..e1fb04f 100644
> --- a/include/drm/drm_dp_helper.h
> +++ b/include/drm/drm_dp_helper.h
> @@ -179,6 +179,111 @@
>
> #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 (0xf << 0)
> +# define DP_DSC_MINOR_MASK (0xf << 4)
> +# define DP_DSC_MAJOR_SHIFT 0
> +# define DP_DSC_MINOR_SHIFT 4
> +
> +#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 (0xf << 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)
> +
> +#define DP_DSC_PEAK_THROUGHPUT 0x06B
> +# define DP_DSC_THROUGHPUT_MODE_0_MASK (0xf << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_SHIFT 0
> +# define DP_DSC_THROUGHPUT_MODE_0_340 (1 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_400 (2 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_450 (3 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_500 (4 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_550 (5 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_600 (6 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_650 (7 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_700 (8 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_750 (9 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_800 (10 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_850 (11 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_900 (12 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_950 (13 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_0_1000 (14 << 0)
> +# define DP_DSC_THROUGHPUT_MODE_1_MASK (0xf << 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
> +
Maybe add the DSC enable dpcd too (0x160)?
Ander
> #define DP_PSR_SUPPORT 0x070 /* XXX 1.2? */
> # define DP_PSR_IS_SUPPORTED 1
> # define DP_PSR2_IS_SUPPORTED 2 /* eDP 1.4 */
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