[PATCH 01/23] drm/dp: Add DP DSC DPCD receiver capability size define and missing SHIFT

[Manasi Navare]

This patch defines the DP DSC receiver capability size that gives
total number of DP DSC DPCD registers.
This also adds a missing #defines for DP DSC support missed in the
commit id (ab6a46ea6842ce "Add DPCD definitions for DP 1.4 DSC feature")

v3:
* MIN_SLICE_WIDTH = 2560 (Anusha)
* Define DP_DSC_SLICE_WIDTH_MULTIPLIER = 320
v2:
* Add SHIFT define and DECOMPRESSION_EN define misse din prev patch

Cc: dri-devel at lists.freedesktop.org
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa at intel.com>
Cc: Gaurav K Singh <gaurav.k.singh at intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
---
 include/drm/drm_dp_helper.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 05cc31b..eb0d86c 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -230,6 +230,8 @@
 #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_MAX_BITS_PER_PIXEL_HI_MASK  (0x3 << 0)
+# define DP_DSC_MAX_BITS_PER_PIXEL_HI_SHIFT 8
 
 #define DP_DSC_DEC_COLOR_FORMAT_CAP         0x069
 # define DP_DSC_RGB                         (1 << 0)
@@ -278,6 +280,8 @@
 # define DP_DSC_THROUGHPUT_MODE_1_1000      (14 << 4)
 
 #define DP_DSC_MAX_SLICE_WIDTH              0x06C
+#define DP_DSC_MIN_SLICE_WIDTH_VALUE        2560
+#define DP_DSC_SLICE_WIDTH_MULTIPLIER       320
 
 #define DP_DSC_SLICE_CAP_2                  0x06D
 # define DP_DSC_16_PER_DP_DSC_SINK          (1 << 0)
@@ -476,6 +480,7 @@
 # define DP_AUX_FRAME_SYNC_VALID	    (1 << 0)
 
 #define DP_DSC_ENABLE                       0x160   /* DP 1.4 */
+# define DP_DECOMPRESSION_EN                (1 << 0)
 
 #define DP_PSR_EN_CFG			    0x170   /* XXX 1.2? */
 # define DP_PSR_ENABLE			    (1 << 0)
@@ -962,6 +967,7 @@ u8 drm_dp_get_adjust_request_pre_emphasis(const u8 link_status[DP_LINK_STATUS_SI
 
 #define DP_BRANCH_OUI_HEADER_SIZE	0xc
 #define DP_RECEIVER_CAP_SIZE		0xf
+#define DP_DSC_RECEIVER_CAP_SIZE        0xf
 #define EDP_PSR_RECEIVER_CAP_SIZE	2
 #define EDP_DISPLAY_CTL_CAP_SIZE	3
 
-- 
2.7.4