diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/vlv_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/vlv_dsi.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c index f461a8f03e19..cf51860a1429 100644 --- a/drivers/gpu/drm/i915/display/vlv_dsi.c +++ b/drivers/gpu/drm/i915/display/vlv_dsi.c @@ -714,6 +714,19 @@ static void intel_dsi_port_disable(struct intel_encoder *encoder) } } +static void intel_dsi_wait_panel_power_cycle(struct intel_dsi *intel_dsi) +{ + ktime_t panel_power_on_time; + s64 panel_power_off_duration; + + panel_power_on_time = ktime_get_boottime(); + panel_power_off_duration = ktime_ms_delta(panel_power_on_time, + intel_dsi->panel_power_off_time); + + if (panel_power_off_duration < (s64)intel_dsi->panel_pwr_cycle_delay) + msleep(intel_dsi->panel_pwr_cycle_delay - panel_power_off_duration); +} + static void intel_dsi_prepare(struct intel_encoder *intel_encoder, const struct intel_crtc_state *pipe_config); static void intel_dsi_unprepare(struct intel_encoder *encoder); @@ -775,6 +788,8 @@ static void intel_dsi_pre_enable(struct intel_atomic_state *state, drm_dbg_kms(&dev_priv->drm, "\n"); + intel_dsi_wait_panel_power_cycle(intel_dsi); + intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true); /* @@ -989,18 +1004,14 @@ static void intel_dsi_post_disable(struct intel_atomic_state *state, intel_dsi_msleep(intel_dsi, intel_dsi->panel_off_delay); intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF); - /* - * FIXME As we do with eDP, just make a note of the time here - * and perform the wait before the next panel power on. - */ - msleep(intel_dsi->panel_pwr_cycle_delay); + intel_dsi->panel_power_off_time = ktime_get_boottime(); } static void intel_dsi_shutdown(struct intel_encoder *encoder) { struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); - msleep(intel_dsi->panel_pwr_cycle_delay); + intel_dsi_wait_panel_power_cycle(intel_dsi); } static bool intel_dsi_get_hw_state(struct intel_encoder *encoder, @@ -1883,6 +1894,8 @@ void vlv_dsi_init(struct drm_i915_private *dev_priv) else intel_encoder->pipe_mask = BIT(PIPE_B); + intel_dsi->panel_power_off_time = ktime_get_boottime(); + if (dev_priv->vbt.dsi.config->dual_link) intel_dsi->ports = BIT(PORT_A) | BIT(PORT_C); else |