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| author |   Imre Deak <imre.deak@intel.com> | 2019-05-09 20:34:40 +0300 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2019-05-14 14:06:30 +0300 |
| commit | f39194a7a8b903923c83f563cbe5a651fd00dd93 (patch) | |
| tree | e3038cc10e23483d5655d54a2b7fffde7462c3a6 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | drm/i915: Add support for asynchronous display power disabling (diff) | |
| download | linux-dev-f39194a7a8b903923c83f563cbe5a651fd00dd93.tar.xz linux-dev-f39194a7a8b903923c83f563cbe5a651fd00dd93.zip | |
drm/i915: Disable power asynchronously during DP AUX transfers
In a follow-up patch we will restrict holding the reference on the AUX
power domain to the AUX transfer function. To avoid the unnecessary
on-off-on power togglings drop the reference asynchronously.
There is no reason we couldn't do this in general and also put the
reference asynchronously in pps_unlock(); but that's a separate change
that can be done as a follow-up.
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190509173446.31095-6-imre.deak@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 53cc4afea256..700ceacb82e6 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1221,7 +1221,10 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp, to_i915(intel_dig_port->base.base.dev); i915_reg_t ch_ctl, ch_data[5]; u32 aux_clock_divider; - intel_wakeref_t wakeref; + enum intel_display_power_domain aux_domain = + intel_aux_power_domain(intel_dig_port); + intel_wakeref_t aux_wakeref; + intel_wakeref_t pps_wakeref; int i, ret, recv_bytes; int try, clock = 0; u32 status; @@ -1231,7 +1234,8 @@ intel_dp_aux_xfer(struct intel_dp *intel_dp, for (i = 0; i < ARRAY_SIZE(ch_data); i++) ch_data[i] = intel_dp->aux_ch_data_reg(intel_dp, i); - wakeref = pps_lock(intel_dp); + aux_wakeref = intel_display_power_get(dev_priv, aux_domain); + pps_wakeref = pps_lock(intel_dp); /* * We will be called with VDD already enabled for dpcd/edid/oui reads. @@ -1377,7 +1381,8 @@ out: if (vdd) edp_panel_vdd_off(intel_dp, false); - pps_unlock(intel_dp, wakeref); + pps_unlock(intel_dp, pps_wakeref); + intel_display_power_put_async(dev_priv, aux_domain, aux_wakeref); return ret; } |