diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/vlv_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/vlv_dsi.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c index 5e5522923b1e..f94025ec603a 100644 --- a/drivers/gpu/drm/i915/display/vlv_dsi.c +++ b/drivers/gpu/drm/i915/display/vlv_dsi.c @@ -812,10 +812,20 @@ static void intel_dsi_pre_enable(struct intel_atomic_state *state, intel_dsi_prepare(encoder, pipe_config); intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON); - intel_dsi_msleep(intel_dsi, intel_dsi->panel_on_delay); - /* Deassert reset */ - intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET); + /* + * Give the panel time to power-on and then deassert its reset. + * Depending on the VBT MIPI sequences version the deassert-seq + * may contain the necessary delay, intel_dsi_msleep() will skip + * the delay in that case. If there is no deassert-seq, then an + * unconditional msleep is used to give the panel time to power-on. + */ + if (dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET]) { + intel_dsi_msleep(intel_dsi, intel_dsi->panel_on_delay); + intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET); + } else { + msleep(intel_dsi->panel_on_delay); + } if (IS_GEMINILAKE(dev_priv)) { glk_cold_boot = glk_dsi_enable_io(encoder); @@ -985,6 +995,13 @@ static void intel_dsi_post_disable(struct intel_atomic_state *state, intel_dsi_msleep(intel_dsi, intel_dsi->panel_pwr_cycle_delay); } +static void intel_dsi_shutdown(struct intel_encoder *encoder) +{ + struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); + + intel_dsi_msleep(intel_dsi, intel_dsi->panel_pwr_cycle_delay); +} + static bool intel_dsi_get_hw_state(struct intel_encoder *encoder, enum pipe *pipe) { @@ -1843,6 +1860,7 @@ void vlv_dsi_init(struct drm_i915_private *dev_priv) intel_encoder->get_hw_state = intel_dsi_get_hw_state; intel_encoder->get_config = intel_dsi_get_config; intel_encoder->update_pipe = intel_panel_update_backlight; + intel_encoder->shutdown = intel_dsi_shutdown; intel_connector->get_hw_state = intel_connector_get_hw_state; |