From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> [ Upstream commit 75bd0d5e4eadb9ce3e9b6fb71971b6e87c38799e ] Split each of the hw/vbt/spec PPS delay initialization into separate functions to make the whole thing less cluttered. Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20220510104242.6099-4-ville.syrjala@xxxxxxxxxxxxxxx Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx> Stable-dep-of: 607f41768a1e ("drm/i915/dsi: filter invalid backlight and CABC ports") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_pps.c | 66 +++++++++++++++++------- 1 file changed, 48 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c index 5a598dd06039..5b72c892a6f2 100644 --- a/drivers/gpu/drm/i915/display/intel_pps.c +++ b/drivers/gpu/drm/i915/display/intel_pps.c @@ -1159,53 +1159,83 @@ intel_pps_verify_state(struct intel_dp *intel_dp) } } -static void pps_init_delays(struct intel_dp *intel_dp) +static void pps_init_delays_cur(struct intel_dp *intel_dp, + struct edp_power_seq *cur) { struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); - struct edp_power_seq cur, vbt, spec, - *final = &intel_dp->pps.pps_delays; lockdep_assert_held(&dev_priv->pps_mutex); - /* already initialized? */ - if (final->t11_t12 != 0) - return; + intel_pps_readout_hw_state(intel_dp, cur); + + intel_pps_dump_state(intel_dp, "cur", cur); +} - intel_pps_readout_hw_state(intel_dp, &cur); +static void pps_init_delays_vbt(struct intel_dp *intel_dp, + struct edp_power_seq *vbt) +{ + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); - intel_pps_dump_state(intel_dp, "cur", &cur); + *vbt = dev_priv->vbt.edp.pps; - vbt = dev_priv->vbt.edp.pps; /* On Toshiba Satellite P50-C-18C system the VBT T12 delay * of 500ms appears to be too short. Ocassionally the panel * just fails to power back on. Increasing the delay to 800ms * seems sufficient to avoid this problem. */ if (dev_priv->quirks & QUIRK_INCREASE_T12_DELAY) { - vbt.t11_t12 = max_t(u16, vbt.t11_t12, 1300 * 10); + vbt->t11_t12 = max_t(u16, vbt->t11_t12, 1300 * 10); drm_dbg_kms(&dev_priv->drm, "Increasing T12 panel delay as per the quirk to %d\n", - vbt.t11_t12); + vbt->t11_t12); } + /* T11_T12 delay is special and actually in units of 100ms, but zero * based in the hw (so we need to add 100 ms). But the sw vbt * table multiplies it with 1000 to make it in units of 100usec, * too. */ - vbt.t11_t12 += 100 * 10; + vbt->t11_t12 += 100 * 10; + + intel_pps_dump_state(intel_dp, "vbt", vbt); +} + +static void pps_init_delays_spec(struct intel_dp *intel_dp, + struct edp_power_seq *spec) +{ + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + + lockdep_assert_held(&dev_priv->pps_mutex); /* Upper limits from eDP 1.3 spec. Note that we use the clunky units of * our hw here, which are all in 100usec. */ - spec.t1_t3 = 210 * 10; - spec.t8 = 50 * 10; /* no limit for t8, use t7 instead */ - spec.t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ - spec.t10 = 500 * 10; + spec->t1_t3 = 210 * 10; + spec->t8 = 50 * 10; /* no limit for t8, use t7 instead */ + spec->t9 = 50 * 10; /* no limit for t9, make it symmetric with t8 */ + spec->t10 = 500 * 10; /* This one is special and actually in units of 100ms, but zero * based in the hw (so we need to add 100 ms). But the sw vbt * table multiplies it with 1000 to make it in units of 100usec, * too. */ - spec.t11_t12 = (510 + 100) * 10; + spec->t11_t12 = (510 + 100) * 10; + + intel_pps_dump_state(intel_dp, "spec", spec); +} + +static void pps_init_delays(struct intel_dp *intel_dp) +{ + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + struct edp_power_seq cur, vbt, spec, + *final = &intel_dp->pps.pps_delays; + + lockdep_assert_held(&dev_priv->pps_mutex); + + /* already initialized? */ + if (final->t11_t12 != 0) + return; - intel_pps_dump_state(intel_dp, "vbt", &vbt); + pps_init_delays_cur(intel_dp, &cur); + pps_init_delays_vbt(intel_dp, &vbt); + pps_init_delays_spec(intel_dp, &spec); /* Use the max of the register settings and vbt. If both are * unset, fall back to the spec limits. */ -- 2.35.1
