[PATCH] drm: Add DPCD definitions for DP 1.4 DSC feature

Manasi Navare
2017-02-14T23:33:47Z

Display stream compression is supported on DP 1.4 DP
devices. This patch adds the corersponding DPCD
register definitions for DSC.

Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
---
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
+
+#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)
+
+#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
+# 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 */
--
2.1.4