[Intel-gfx] [PATCH v2 06/13] drm/i915/dsi: Respect power cycle delay on icl+

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Handle the DSI panel power cycle delay on icl+.

Reviewed-by: Jani Nikula <jani.nikula at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/icl_dsi.c   |  6 ++++++
 drivers/gpu/drm/i915/display/intel_dsi.c | 13 +++++++++++++
 drivers/gpu/drm/i915/display/intel_dsi.h |  1 +
 drivers/gpu/drm/i915/display/vlv_dsi.c   | 14 --------------
 4 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
index 973215bec3c1..a89a45fc0468 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -1166,6 +1166,8 @@ static void gen11_dsi_pre_pll_enable(struct intel_atomic_state *state,
 {
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
 
+	intel_dsi_wait_panel_power_cycle(intel_dsi);
+
 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON);
 	msleep(intel_dsi->panel_on_delay);
 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET);
@@ -1292,6 +1294,8 @@ static void gen11_dsi_powerdown_panel(struct intel_encoder *encoder)
 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_ASSERT_RESET);
 	intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_OFF);
 
+	intel_dsi->panel_power_off_time = ktime_get_boottime();
+
 	/* ensure cmds dispatched to panel */
 	wait_for_cmds_dispatched_to_panel(encoder);
 }
@@ -1986,6 +1990,8 @@ void icl_dsi_init(struct drm_i915_private *dev_priv)
 	/* attach connector to encoder */
 	intel_connector_attach_encoder(intel_connector, encoder);
 
+	intel_dsi->panel_power_off_time = ktime_get_boottime();
+
 	encoder->devdata = intel_bios_encoder_data_lookup(dev_priv, port);
 	intel_bios_init_panel_late(dev_priv, &intel_connector->panel, encoder->devdata, NULL);
 
diff --git a/drivers/gpu/drm/i915/display/intel_dsi.c b/drivers/gpu/drm/i915/display/intel_dsi.c
index 5efdd471ac2b..e8a596a7c28a 100644
--- a/drivers/gpu/drm/i915/display/intel_dsi.c
+++ b/drivers/gpu/drm/i915/display/intel_dsi.c
@@ -9,6 +9,19 @@
 #include "intel_dsi.h"
 #include "intel_panel.h"
 
+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);
+}
+
 int intel_dsi_bitrate(const struct intel_dsi *intel_dsi)
 {
 	int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format);
diff --git a/drivers/gpu/drm/i915/display/intel_dsi.h b/drivers/gpu/drm/i915/display/intel_dsi.h
index ce80bd8be519..b690e0fcd906 100644
--- a/drivers/gpu/drm/i915/display/intel_dsi.h
+++ b/drivers/gpu/drm/i915/display/intel_dsi.h
@@ -173,5 +173,6 @@ enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
 struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
 					   const struct mipi_dsi_host_ops *funcs,
 					   enum port port);
+void intel_dsi_wait_panel_power_cycle(struct intel_dsi *intel_dsi);
 
 #endif /* _INTEL_DSI_H */
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c b/drivers/gpu/drm/i915/display/vlv_dsi.c
index ae2f3ab3e73d..1e6f438a43d8 100644
--- a/drivers/gpu/drm/i915/display/vlv_dsi.c
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
@@ -671,20 +671,6 @@ static void intel_dsi_port_disable(struct intel_encoder *encoder)
 		intel_de_posting_read(dev_priv, port_ctrl);
 	}
 }
-
-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);
-- 
2.39.3