Restore our saved values for backlight. This way even with fastset on
S4 resume we will correctly restore the backlight to the active values.
Changes since v1:
- Call enable_backlight() when backlight.level is set. On suspend
backlight.enabled is always cleared, this makes it not a good
indicator. Also check for crtc->state->active.
Changes since v2:
- Use the new update_pipe() callback to run this on resume as well.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Tolga Cakir <cevelnet@xxxxxxxxx>
Cc: Basil Eric Rabi <ericbasil.rabi@xxxxxxxxx>
Cc: Hans de Goede <jwrdegoede@xxxxxxxxxxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reported-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/icl_dsi.c | 1 +
drivers/gpu/drm/i915/intel_ddi.c | 2 ++
drivers/gpu/drm/i915/intel_dp.c | 1 +
drivers/gpu/drm/i915/intel_drv.h | 3 ++
drivers/gpu/drm/i915/intel_lvds.c | 1 +
drivers/gpu/drm/i915/intel_panel.c | 49 +++++++++++++++++++++++-------
drivers/gpu/drm/i915/vlv_dsi.c | 1 +
7 files changed, 47 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c
index 4dd793b78996..3f92881600c5 100644
--- a/drivers/gpu/drm/i915/icl_dsi.c
+++ b/drivers/gpu/drm/i915/icl_dsi.c
@@ -1378,6 +1378,7 @@ void icl_dsi_init(struct drm_i915_private *dev_priv)
encoder->disable = gen11_dsi_disable;
encoder->port = port;
encoder->get_config = gen11_dsi_get_config;
+ encoder->update_pipe = intel_panel_update_backlight;
encoder->compute_config = gen11_dsi_compute_config;
encoder->get_hw_state = gen11_dsi_get_hw_state;
encoder->type = INTEL_OUTPUT_DSI;
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 2d6ed990a232..d32865dc44e8 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -3548,6 +3548,8 @@ static void intel_ddi_update_pipe_dp(struct intel_encoder *encoder,
intel_psr_enable(intel_dp, crtc_state);
intel_edp_drrs_enable(intel_dp, crtc_state);
+
+ intel_panel_update_backlight(encoder, crtc_state, conn_state);
}
static void intel_ddi_update_pipe(struct intel_encoder *encoder,
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 62fd11540942..0cbacdc70b07 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -6981,6 +6981,7 @@ bool intel_dp_init(struct drm_i915_private *dev_priv,
intel_encoder->compute_config = intel_dp_compute_config;
intel_encoder->get_hw_state = intel_dp_get_hw_state;
intel_encoder->get_config = intel_dp_get_config;
+ intel_encoder->update_pipe = intel_panel_update_backlight;
intel_encoder->suspend = intel_dp_encoder_suspend;
if (IS_CHERRYVIEW(dev_priv)) {
intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 1a11c2beb7f3..0a6fb42e2086 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -2023,6 +2023,9 @@ int intel_panel_setup_backlight(struct drm_connector *connector,
enum pipe pipe);
void intel_panel_enable_backlight(const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state);
+void intel_panel_update_backlight(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state,
+ const struct drm_connector_state *conn_state);
void intel_panel_disable_backlight(const struct drm_connector_state *old_conn_state);
extern struct drm_display_mode *intel_find_panel_downclock(
struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index b85e195f7c8a..189693b4c5e8 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -909,6 +909,7 @@ void intel_lvds_init(struct drm_i915_private *dev_priv)
}
intel_encoder->get_hw_state = intel_lvds_get_hw_state;
intel_encoder->get_config = intel_lvds_get_config;
+ intel_encoder->update_pipe = intel_panel_update_backlight;
intel_connector->get_hw_state = intel_connector_get_hw_state;
intel_connector_attach_encoder(intel_connector, intel_encoder);
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index ee3e0842d542..f71b33cf1c97 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -1087,20 +1087,11 @@ static void pwm_enable_backlight(const struct intel_crtc_state *crtc_state,
intel_panel_actually_set_backlight(conn_state, panel->backlight.level);
}
-void intel_panel_enable_backlight(const struct intel_crtc_state *crtc_state,
- const struct drm_connector_state *conn_state)
+static void __intel_panel_enable_backlight(const struct intel_crtc_state *crtc_state,
+ const struct drm_connector_state *conn_state)
{
struct intel_connector *connector = to_intel_connector(conn_state->connector);
- struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
struct intel_panel *panel = &connector->panel;
- enum pipe pipe = to_intel_crtc(crtc_state->base.crtc)->pipe;
-
- if (!panel->backlight.present)
- return;
-
- DRM_DEBUG_KMS("pipe %c\n", pipe_name(pipe));
-
- mutex_lock(&dev_priv->backlight_lock);
WARN_ON(panel->backlight.max == 0);
@@ -1117,6 +1108,24 @@ void intel_panel_enable_backlight(const struct intel_crtc_state *crtc_state,
panel->backlight.enabled = true;
if (panel->backlight.device)
panel->backlight.device->props.power = FB_BLANK_UNBLANK;
+}
+
+void intel_panel_enable_backlight(const struct intel_crtc_state *crtc_state,
+ const struct drm_connector_state *conn_state)
+{
+ struct intel_connector *connector = to_intel_connector(conn_state->connector);
+ struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+ struct intel_panel *panel = &connector->panel;
+ enum pipe pipe = to_intel_crtc(crtc_state->base.crtc)->pipe;
+
+ if (!panel->backlight.present)
+ return;
+
+ DRM_DEBUG_KMS("pipe %c\n", pipe_name(pipe));
+
+ mutex_lock(&dev_priv->backlight_lock);
+
+ __intel_panel_enable_backlight(crtc_state, conn_state);
mutex_unlock(&dev_priv->backlight_lock);
}
@@ -1773,6 +1782,24 @@ static int pwm_setup_backlight(struct intel_connector *connector,
return 0;
}
+void intel_panel_update_backlight(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state,
+ const struct drm_connector_state *conn_state)
+{
+ struct intel_connector *connector = to_intel_connector(conn_state->connector);
+ struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+ struct intel_panel *panel = &connector->panel;
+
+ if (!panel->backlight.present)
+ return;
+
+ mutex_lock(&dev_priv->backlight_lock);
+ if (!panel->backlight.enabled)
+ __intel_panel_enable_backlight(crtc_state, conn_state);
+
+ mutex_unlock(&dev_priv->backlight_lock);
+}
+
int intel_panel_setup_backlight(struct drm_connector *connector, enum pipe pipe)
{
struct drm_i915_private *dev_priv = to_i915(connector->dev);
diff --git a/drivers/gpu/drm/i915/vlv_dsi.c b/drivers/gpu/drm/i915/vlv_dsi.c
index 361e962a7969..3dcf7ddca032 100644
--- a/drivers/gpu/drm/i915/vlv_dsi.c
+++ b/drivers/gpu/drm/i915/vlv_dsi.c
@@ -1689,6 +1689,7 @@ void vlv_dsi_init(struct drm_i915_private *dev_priv)
intel_encoder->post_disable = intel_dsi_post_disable;
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_connector->get_hw_state = intel_connector_get_hw_state;
--
2.20.1
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