From: Mitul Golani Date: Mon, 10 Jun 2024 07:21:59 +0000 (+0530) Subject: drm/i915/display: Add support for pack and unpack X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=eba88f28121507b14b328c6e61818c794f313b17;p=users%2Fjedix%2Flinux-maple.git drm/i915/display: Add support for pack and unpack Add support of pack and unpack for target_rr_divider. --v2: - Set Target Refresh Rate Divider bit when related AS SDP bit is set (Ankit). --v3: - target_rr_divider is bools so set accordingly (Ankit). Signed-off-by: Mitul Golani Reviewed-by: Ankit Nautiyal Signed-off-by: Suraj Kandpal Link: https://patchwork.freedesktop.org/patch/msgid/20240610072203.24956-7-mitulkumar.ajitkumar.golani@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index fd054e16850d..ac81b172b1ec 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4232,6 +4232,9 @@ static ssize_t intel_dp_as_sdp_pack(const struct drm_dp_as_sdp *as_sdp, sdp->db[3] = as_sdp->target_rr & 0xFF; sdp->db[4] = (as_sdp->target_rr >> 8) & 0x3; + if (as_sdp->target_rr_divider) + sdp->db[4] |= 0x20; + return length; } @@ -4413,6 +4416,7 @@ int intel_dp_as_sdp_unpack(struct drm_dp_as_sdp *as_sdp, as_sdp->mode = sdp->db[0] & DP_ADAPTIVE_SYNC_SDP_OPERATION_MODE; as_sdp->vtotal = (sdp->db[2] << 8) | sdp->db[1]; as_sdp->target_rr = (u64)sdp->db[3] | ((u64)sdp->db[4] & 0x3); + as_sdp->target_rr_divider = sdp->db[4] & 0x20 ? true : false; return 0; }