diff options
| author | Matt Roper <matthew.d.roper@intel.com> | 2021-05-11 21:21:40 -0700 |
|---|---|---|
| committer | Matt Roper <matthew.d.roper@intel.com> | 2021-05-12 16:56:45 -0700 |
| commit | a6922f4a01300efa0cccc0f337da4431dedf501c (patch) | |
| tree | 1491168fe1b5a4b18f543c852d35760ec51a0726 /drivers/gpu/drm/i915/display/intel_display_debugfs.c | |
| parent | 1649a4cc5c311dd9d3cca670d0c9fc7cd1164db7 (diff) | |
drm/i915/xelpd: Add XE_LPD power wells
Aside from the hardware-managed PG0, XE_LPD has power wells 1-2 and
A-D. These power wells should be enabled/disabled according to the
following dependency tree (enable top to bottom, disable bottom to top):
PG0
|
--PG1--
/ \
PGA --PG2--
/ | \
PGB PGC PGD
PWR_WELL_CTL follows the general ICL/TGL design and places PG A-D in the
bits that would have been PG 6-9 under the old scheme.
PWR_WELL_CTL_{DDI,AUX}'s bit indexing for DDI's A-C and TC1 is the same
as TGL, but DDI-D is placed at index 7 (bits 14 & 15).
v2:
- Squash in LPSP status patch from Uma since it's also a
powerwell-specific change.
Bspec: 49233
Bspec: 49503
Bspec: 49504
Bspec: 49505
Bspec: 49296
Bspec: 50090
Bspec: 53920
Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210512042144.2089071-4-matthew.d.roper@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_display_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_debugfs.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index d55ae83d037a..d77a0ab5cacf 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -1340,6 +1340,12 @@ static int i915_lpsp_status(struct seq_file *m, void *unused) { struct drm_i915_private *i915 = node_to_i915(m->private); + if (DISPLAY_VER(i915) >= 13) { + LPSP_STATUS(!intel_lpsp_power_well_enabled(i915, + SKL_DISP_PW_2)); + return 0; + } + switch (DISPLAY_VER(i915)) { case 12: case 11: |