github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-27 08:33:17 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/i915/xe3p_lpd: Reload DMC MMIO for pipes C and D

Browse Source 
Xe3p_LPD has the same behavior as for Xe3_LPD with respect to DMC
context data for pipes C and D, which are lost when their power wells
are disabled.  As such, let's extend the condition for Xe3_LPD in
need_pipedmc_load_mmio() to also catch Xe3p_LPD.

Bspec: 68851
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Link: https://patch.msgid.link/20251103-xe3p_lpd-basic-enabling-v3-13-00e87b510ae7@intel.com
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
This commit is contained in:
Gustavo Sousa 2025-11-05 11:07:02 -03:00
parent c128c31393
commit 6171b78ac2
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/i915/display/intel_dmc.c
View File

@ -718,11 +718,11 @@ static bool need_pipedmc_load_program(struct intel_display *display)
static bool need_pipedmc_load_mmio(struct intel_display *display, enum pipe pipe)
{
/*
* PTL:
* Xe3_LPD/Xe3p_LPD:
* - pipe A/B DMC doesn't need save/restore
* - pipe C/D DMC is in PG0, needs manual save/restore
*/
if (DISPLAY_VER(display) == 30)
if (IS_DISPLAY_VER(display, 30, 35))
return pipe >= PIPE_C;
/*