[Intel-gfx] [PATCH 07/14] drm/i915/dsi: Respect power cycle delay on icl+

[Ville Syrjala]

From: Ville Syrjälä <ville.syrj...@linux.intel.com>

Handle the DSI panel power cycle delay on icl+.

Signed-off-by: Ville Syrjälä <ville.syrj...@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 325e381a83fa..88130cd19d3f 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);
 }
@@ -1985,6 +1989,8 @@ 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 028965ab442d..e7993480199e 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);
-- 
2.39.2