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drm/i915/dsi: Use TRANS_DDI_FUNC_CTL's own port width macro

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[ Upstream commit 879f70382ff3e92fc854589ada3453e3f5f5b601 ]

The format of the port width field in the DDI_BUF_CTL and the
TRANS_DDI_FUNC_CTL registers are different starting with MTL, where the
x3 lane mode for HDMI FRL has a different encoding in the two registers.
To account for this use the TRANS_DDI_FUNC_CTL's own port width macro.

Cc: <stable@vger.kernel.org> # v6.5+
Fixes: b66a8abaa4 ("drm/i915/display/mtl: Fill port width in DDI_BUF_/TRANS_DDI_FUNC_/PORT_BUF_CTL for HDMI")
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250214142001.552916-2-imre.deak@intel.com
(cherry picked from commit 76120b3a304aec28fef4910204b81a12db8974da)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Imre Deak
2025-02-14 16:19:51 +02:00
committed by Greg Kroah-Hartman
parent 0131280ddf
commit 729e7d4b1c
1 changed files with 2 additions and 2 deletions
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drivers/gpu/drm/i915/display/icl_dsi.c
+2 -2
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@@ -806,8 +806,8 @@ gen11_dsi_configure_transcoder(struct intel_encoder *encoder,
/* select data lane width */
tmp = intel_de_read(display,
TRANS_DDI_FUNC_CTL(display, dsi_trans));
tmp &= ~DDI_PORT_WIDTH_MASK;
tmp |= DDI_PORT_WIDTH(intel_dsi->lane_count);
tmp &= ~TRANS_DDI_PORT_WIDTH_MASK;
tmp |= TRANS_DDI_PORT_WIDTH(intel_dsi->lane_count);
/* select input pipe */
tmp &= ~TRANS_DDI_EDP_INPUT_MASK;