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drm/i915/pps: Stash away original BIOS programmed PPS delays

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In order to do the panel VBT parsing after the EDID read
(needed to determine panel_type from PNPID) we need to stash
away the original BIOS programmed PPS delays so that we
can consult them again when we reinit the PPS delays after
the VBT parsing has been done.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220510104242.6099-7-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2022-05-10 13:42:33 +03:00
parent 89fcdf4305
commit 586294c3c1
2 changed files with 9 additions and 5 deletions
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1
drivers/gpu/drm/i915/display/intel_display_types.h
View File

@ -1496,6 +1496,7 @@ struct intel_pps {
*/
bool pps_reset;
struct edp_power_seq pps_delays;
struct edp_power_seq bios_pps_delays;
};
struct intel_psr {

13
drivers/gpu/drm/i915/display/intel_pps.c
View File

@ -1165,16 +1165,19 @@ static bool pps_delays_valid(struct edp_power_seq *delays)
delays->t10 || delays->t11_t12;
}
static void pps_init_delays_cur(struct intel_dp *intel_dp,
struct edp_power_seq *cur)
static void pps_init_delays_bios(struct intel_dp *intel_dp,
struct edp_power_seq *bios)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
lockdep_assert_held(&dev_priv->pps_mutex);
intel_pps_readout_hw_state(intel_dp, cur);
if (!pps_delays_valid(&intel_dp->pps.bios_pps_delays))
intel_pps_readout_hw_state(intel_dp, &intel_dp->pps.bios_pps_delays);
intel_pps_dump_state(intel_dp, "cur", cur);
*bios = intel_dp->pps.bios_pps_delays;
intel_pps_dump_state(intel_dp, "bios", bios);
}
static void pps_init_delays_vbt(struct intel_dp *intel_dp,
@ -1242,7 +1245,7 @@ static void pps_init_delays(struct intel_dp *intel_dp)
if (pps_delays_valid(final))
return;
pps_init_delays_cur(intel_dp, &cur);
pps_init_delays_bios(intel_dp, &cur);
pps_init_delays_vbt(intel_dp, &vbt);
pps_init_delays_spec(intel_dp, &spec);