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

We already populate connector->ddc for HDMI ports, but
so far we've not taken full advantage of it. Do that by
eliminating a bunch of intel_gmbus_get_adapter() lookups.

Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c  |  3 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c | 37 ++++++++---------------
 2 files changed, 14 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c 
b/drivers/gpu/drm/i915/display/intel_ddi.c
index e6cc4dab3201..d86ce93fb57f 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4323,8 +4323,7 @@ static int intel_hdmi_reset_link(struct intel_encoder 
*encoder,
        struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
        struct intel_hdmi *hdmi = enc_to_intel_hdmi(encoder);
        struct intel_connector *connector = hdmi->attached_connector;
-       struct i2c_adapter *ddc =
-               intel_gmbus_get_adapter(dev_priv, hdmi->ddc_bus);
+       struct i2c_adapter *ddc = connector->base.ddc;
        struct drm_connector_state *conn_state;
        struct intel_crtc_state *crtc_state;
        struct intel_crtc *crtc;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c 
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 82f9a40b34e3..efa9bb93cfb1 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1240,7 +1240,7 @@ static void hsw_set_infoframes(struct intel_encoder 
*encoder,
 void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi *hdmi, bool enable)
 {
        struct drm_i915_private *dev_priv = intel_hdmi_to_i915(hdmi);
-       struct i2c_adapter *ddc = intel_gmbus_get_adapter(dev_priv, 
hdmi->ddc_bus);
+       struct i2c_adapter *ddc = hdmi->attached_connector->base.ddc;
 
        if (hdmi->dp_dual_mode.type < DRM_DP_DUAL_MODE_TYPE2_DVI)
                return;
@@ -1255,9 +1255,8 @@ void intel_dp_dual_mode_set_tmds_output(struct intel_hdmi 
*hdmi, bool enable)
 static int intel_hdmi_hdcp_read(struct intel_digital_port *dig_port,
                                unsigned int offset, void *buffer, size_t size)
 {
-       struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
        struct intel_hdmi *hdmi = &dig_port->hdmi;
-       struct i2c_adapter *ddc = intel_gmbus_get_adapter(i915, hdmi->ddc_bus);
+       struct i2c_adapter *ddc = hdmi->attached_connector->base.ddc;
        int ret;
        u8 start = offset & 0xff;
        struct i2c_msg msgs[] = {
@@ -1283,9 +1282,8 @@ static int intel_hdmi_hdcp_read(struct intel_digital_port 
*dig_port,
 static int intel_hdmi_hdcp_write(struct intel_digital_port *dig_port,
                                 unsigned int offset, void *buffer, size_t size)
 {
-       struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
        struct intel_hdmi *hdmi = &dig_port->hdmi;
-       struct i2c_adapter *ddc = intel_gmbus_get_adapter(i915, hdmi->ddc_bus);
+       struct i2c_adapter *ddc = hdmi->attached_connector->base.ddc;
        int ret;
        u8 *write_buf;
        struct i2c_msg msg;
@@ -1318,7 +1316,7 @@ int intel_hdmi_hdcp_write_an_aksv(struct 
intel_digital_port *dig_port,
 {
        struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
        struct intel_hdmi *hdmi = &dig_port->hdmi;
-       struct i2c_adapter *ddc = intel_gmbus_get_adapter(i915, hdmi->ddc_bus);
+       struct i2c_adapter *ddc = hdmi->attached_connector->base.ddc;
        int ret;
 
        ret = intel_hdmi_hdcp_write(dig_port, DRM_HDCP_DDC_AN, an,
@@ -2398,8 +2396,10 @@ intel_hdmi_dp_dual_mode_detect(struct drm_connector 
*connector)
        struct drm_i915_private *dev_priv = to_i915(connector->dev);
        struct intel_hdmi *hdmi = 
intel_attached_hdmi(to_intel_connector(connector));
        struct intel_encoder *encoder = &hdmi_to_dig_port(hdmi)->base;
-       struct i2c_adapter *ddc = intel_gmbus_get_adapter(dev_priv, 
hdmi->ddc_bus);
-       enum drm_dp_dual_mode_type type = 
drm_dp_dual_mode_detect(&dev_priv->drm, ddc);
+       struct i2c_adapter *ddc = connector->ddc;
+       enum drm_dp_dual_mode_type type;
+
+       type = drm_dp_dual_mode_detect(&dev_priv->drm, ddc);
 
        /*
         * Type 1 DVI adaptors are not required to implement any
@@ -2447,7 +2447,7 @@ intel_hdmi_set_edid(struct drm_connector *connector)
 {
        struct drm_i915_private *dev_priv = to_i915(connector->dev);
        struct intel_hdmi *intel_hdmi = 
intel_attached_hdmi(to_intel_connector(connector));
-       struct i2c_adapter *ddc = intel_gmbus_get_adapter(dev_priv, 
intel_hdmi->ddc_bus);
+       struct i2c_adapter *ddc = connector->ddc;
        intel_wakeref_t wakeref;
        const struct drm_edid *drm_edid;
        const struct edid *edid;
@@ -2544,19 +2544,10 @@ static int intel_hdmi_get_modes(struct drm_connector 
*connector)
        return drm_edid_connector_add_modes(connector);
 }
 
-static struct i2c_adapter *
-intel_hdmi_get_i2c_adapter(struct drm_connector *connector)
-{
-       struct drm_i915_private *dev_priv = to_i915(connector->dev);
-       struct intel_hdmi *intel_hdmi = 
intel_attached_hdmi(to_intel_connector(connector));
-
-       return intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
-}
-
 static void intel_hdmi_create_i2c_symlink(struct drm_connector *connector)
 {
        struct drm_i915_private *i915 = to_i915(connector->dev);
-       struct i2c_adapter *ddc = intel_hdmi_get_i2c_adapter(connector);
+       struct i2c_adapter *ddc = connector->ddc;
        struct kobject *i2c_kobj = &ddc->dev.kobj;
        struct kobject *connector_kobj = &connector->kdev->kobj;
        int ret;
@@ -2568,7 +2559,7 @@ static void intel_hdmi_create_i2c_symlink(struct 
drm_connector *connector)
 
 static void intel_hdmi_remove_i2c_symlink(struct drm_connector *connector)
 {
-       struct i2c_adapter *ddc = intel_hdmi_get_i2c_adapter(connector);
+       struct i2c_adapter *ddc = connector->ddc;
        struct kobject *i2c_kobj = &ddc->dev.kobj;
        struct kobject *connector_kobj = &connector->kdev->kobj;
 
@@ -3007,7 +2998,6 @@ void intel_hdmi_init_connector(struct intel_digital_port 
*dig_port,
        struct intel_encoder *intel_encoder = &dig_port->base;
        struct drm_device *dev = intel_encoder->base.dev;
        struct drm_i915_private *dev_priv = to_i915(dev);
-       struct i2c_adapter *ddc;
        enum port port = intel_encoder->port;
        struct cec_connector_info conn_info;
 
@@ -3028,12 +3018,11 @@ void intel_hdmi_init_connector(struct 
intel_digital_port *dig_port,
        if (!intel_hdmi->ddc_bus)
                return;
 
-       ddc = intel_gmbus_get_adapter(dev_priv, intel_hdmi->ddc_bus);
-
        drm_connector_init_with_ddc(dev, connector,
                                    &intel_hdmi_connector_funcs,
                                    DRM_MODE_CONNECTOR_HDMIA,
-                                   ddc);
+                                   intel_gmbus_get_adapter(dev_priv, 
intel_hdmi->ddc_bus));
+
        drm_connector_helper_add(connector, &intel_hdmi_connector_helper_funcs);
 
        if (DISPLAY_VER(dev_priv) < 12)
-- 
2.41.0

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