diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2025-01-03 16:52:34 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2025-01-07 19:44:08 +0300 |
| commit | a9efb7e2f72e5f5835b942aaadcd5d730d0ad673 (patch) | |
| tree | 2dc2b19b26f86375cb3ea26201dacf209eca1759 | |
| parent | aedeed4af6fdd23426a6cec09c3e5872003e4a07 (diff) | |
| download | linux-a9efb7e2f72e5f5835b942aaadcd5d730d0ad673.tar.xz | |
drm/i915/ddi: initialize 128b/132b SST DP2 VFREQ registers
Write the DP2 specific VFREQ registers.
This is preparation for enabling 128b/132b SST. This path is not
reachable yet.
v2: Check for !is_hdmi (Imre)
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/7d90547e9ce01642b722efca0bf81cadb754e790.1735912293.git.jani.nikula@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index f8e111d8c3a5..dff6f4e495a6 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -3473,8 +3473,21 @@ static void intel_ddi_enable(struct intel_atomic_state *state, { struct intel_display *display = to_intel_display(encoder); struct intel_crtc *pipe_crtc; + enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; + bool is_hdmi = intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI); int i; + /* 128b/132b SST */ + if (!is_hdmi && intel_dp_is_uhbr(crtc_state)) { + const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; + u64 crtc_clock_hz = KHz(adjusted_mode->crtc_clock); + + intel_de_write(display, TRANS_DP2_VFREQHIGH(cpu_transcoder), + TRANS_DP2_VFREQ_PIXEL_CLOCK(crtc_clock_hz >> 24)); + intel_de_write(display, TRANS_DP2_VFREQLOW(cpu_transcoder), + TRANS_DP2_VFREQ_PIXEL_CLOCK(crtc_clock_hz & 0xffffff)); + } + intel_ddi_enable_transcoder_func(encoder, crtc_state); /* Enable/Disable DP2.0 SDP split config before transcoder */ @@ -3491,7 +3504,7 @@ static void intel_ddi_enable(struct intel_atomic_state *state, intel_crtc_vblank_on(pipe_crtc_state); } - if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) + if (is_hdmi) intel_ddi_enable_hdmi(state, encoder, crtc_state, conn_state); else intel_ddi_enable_dp(state, encoder, crtc_state, conn_state); |