diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2023-11-30 02:46:30 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2023-11-30 02:46:30 +0000 |
| commit | ee1c5f59cd31c4915069e990125a05646581d152 (patch) | |
| tree | f5e70e2dee1836dba2bad3ef0dc4a0e1db6a9f3d /sys/dev/pci/drm/i915/display | |
| parent | bb223c33872cd2f4720acf1ae201c2929c3994c6 (diff) | |
drm/i915: Bump GLK CDCLK frequency when driving multiple pipes
From Ville Syrjala
9457636a49265bdec14f3b747a4911ea9b7d468c in linux-6.1.y/6.1.64
0cb89cd42fd22bbdec0b046c48f35775f5b88bdb in mainline linux
Diffstat (limited to 'sys/dev/pci/drm/i915/display')
| -rw-r--r-- | sys/dev/pci/drm/i915/display/intel_cdclk.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sys/dev/pci/drm/i915/display/intel_cdclk.c b/sys/dev/pci/drm/i915/display/intel_cdclk.c index 52529c20010..34c01156883 100644 --- a/sys/dev/pci/drm/i915/display/intel_cdclk.c +++ b/sys/dev/pci/drm/i915/display/intel_cdclk.c @@ -2368,6 +2368,18 @@ static int intel_compute_min_cdclk(struct intel_cdclk_state *cdclk_state) for_each_pipe(dev_priv, pipe) min_cdclk = max(cdclk_state->min_cdclk[pipe], min_cdclk); + /* + * Avoid glk_force_audio_cdclk() causing excessive screen + * blinking when multiple pipes are active by making sure + * CDCLK frequency is always high enough for audio. With a + * single active pipe we can always change CDCLK frequency + * by changing the cd2x divider (see glk_cdclk_table[]) and + * thus a full modeset won't be needed then. + */ + if (IS_GEMINILAKE(dev_priv) && cdclk_state->active_pipes && + !is_power_of_2(cdclk_state->active_pipes)) + min_cdclk = max(2 * 96000, min_cdclk); + if (min_cdclk > dev_priv->display.cdclk.max_cdclk_freq) { drm_dbg_kms(&dev_priv->drm, "required cdclk (%d kHz) exceeds max (%d kHz)\n", |