drm/display/dp: Fix the DP DSC Receiver cap size

commit 5ad1ab30ac0809d2963ddcf39ac34317a24a2f17 upstream.

DP DSC Receiver Capabilities are exposed via DPCD 60h-6Fh.
Fix the DSC RECEIVER CAP SIZE accordingly.

Fixes: ffddc4363c28 ("drm/dp: Add DP DSC DPCD receiver capability size define and missing SHIFT")
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: <stable@vger.kernel.org> # v5.0+
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230818044436.177806-1-ankit.k.nautiyal@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index dfb46915015b18c68b13c1f49dd21a5bf9ee2ee6..9c7949ebc159eb3dfd56bd649144e3f2b1328cf4 100644 (file)
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -1495,7 +1495,7 @@ u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STATUS_SIZ
 
 #define DP_BRANCH_OUI_HEADER_SIZE      0xc
 #define DP_RECEIVER_CAP_SIZE           0xf
-#define DP_DSC_RECEIVER_CAP_SIZE        0xf
+#define DP_DSC_RECEIVER_CAP_SIZE        0x10 /* DSC Capabilities 0x60 through 0x6F */
 #define EDP_PSR_RECEIVER_CAP_SIZE      2
 #define EDP_DISPLAY_CTL_CAP_SIZE       3
 #define DP_LTTPR_COMMON_CAP_SIZE       8