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| author |   Jouni Högander <jouni.hogander@intel.com> | 2024-09-02 09:42:41 +0300 |
|---|---|---|
| committer | Jouni Högander <jouni.hogander@intel.com> | 2024-09-03 07:52:47 +0300 |
| commit | fcba2ed66b39252210f4e739722ebcc5398c2197 (patch) | |
| tree | 1b6cc953c77d34a0391504994850bcf88be09bdb /drivers/gpu/drm/i915/display/intel_alpm.c | |
| parent | drm/i915/display: Add mechanism to use sink model when applying quirk (diff) | |
| download | wireguard-linux-fcba2ed66b39252210f4e739722ebcc5398c2197.tar.xz wireguard-linux-fcba2ed66b39252210f4e739722ebcc5398c2197.zip | |
drm/i915/display: Increase Fast Wake Sync length as a quirk
In commit "drm/i915/display: Increase number of fast wake precharge pulses"
we were increasing Fast Wake sync pulse length to fix problems observed on
Dell Precision 5490 laptop with AUO panel. Later we have observed this is
causing problems on other panels.
Fix these problems by increasing Fast Wake sync pulse length as a quirk
applied for Dell Precision 5490 with problematic panel.
Fixes: f77772866385 ("drm/i915/display: Increase number of fast wake precharge pulses")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Closes: http://gitlab.freedesktop.org/drm/i915/kernel/-/issues/9739
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2246
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11762
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Cc: <stable@vger.kernel.org> # v6.10+
Link: https://patchwork.freedesktop.org/patch/msgid/20240902064241.1020965-3-jouni.hogander@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_alpm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_alpm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c b/drivers/gpu/drm/i915/display/intel_alpm.c index 82ee778b2efe..186cf4833f71 100644 --- a/drivers/gpu/drm/i915/display/intel_alpm.c +++ b/drivers/gpu/drm/i915/display/intel_alpm.c @@ -228,7 +228,7 @@ bool intel_alpm_compute_params(struct intel_dp *intel_dp, int tfw_exit_latency = 20; /* eDP spec */ int phy_wake = 4; /* eDP spec */ int preamble = 8; /* eDP spec */ - int precharge = intel_dp_aux_fw_sync_len() - preamble; + int precharge = intel_dp_aux_fw_sync_len(intel_dp) - preamble; u8 max_wake_lines; io_wake_time = max(precharge, io_buffer_wake_time(crtc_state)) + |