Sprinkle some asserts to catch any mishaps in the port_mask
vs. output init.
For DDI/DP/HDMI/SDVO I decided that we want to bail out for
an invalid port since those are the encoder types where
we might want consider driving the whole thing from the VBT
child device list, and bogus VBTs could be a real issue
(if for no other reason than the i915.vbt_firmware).
For DVO and HSW/BDW CRT port I just threw the assert in
there for good measure.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230616140820.11726-5-ville.syrjala@linux.intel.com
struct drm_encoder *encoder;
struct intel_connector *intel_connector;
+ if (!assert_port_valid(dev_priv, port))
+ return false;
+
devdata = intel_bios_encoder_data_lookup(dev_priv, port);
/* FIXME bail? */
struct intel_encoder *intel_encoder;
struct intel_connector *intel_connector;
+ if (!assert_port_valid(dev_priv, port))
+ return;
+
devdata = intel_bios_encoder_data_lookup(dev_priv, port);
/* FIXME bail? */
}
if (HAS_DDI(dev_priv)) {
+ assert_port_valid(dev_priv, PORT_E);
+
crt->base.port = PORT_E;
crt->base.get_config = hsw_crt_get_config;
crt->base.get_hw_state = intel_ddi_get_hw_state;
bool init_hdmi, init_dp;
enum phy phy = intel_port_to_phy(dev_priv, port);
+ if (!assert_port_valid(dev_priv, port))
+ return;
+
/*
* On platforms with HTI (aka HDPORT), if it's enabled at boot it may
* have taken over some of the PHYs and made them unavailable to the
return true;
}
+bool assert_port_valid(struct drm_i915_private *i915, enum port port)
+{
+ return !drm_WARN(&i915->drm, !(DISPLAY_RUNTIME_INFO(i915)->port_mask & BIT(port)),
+ "Platform does not support port %c\n", port_name(port));
+}
+
void intel_setup_outputs(struct drm_i915_private *dev_priv)
{
struct intel_encoder *encoder;
#define assert_transcoder_enabled(d, t) assert_transcoder(d, t, true)
#define assert_transcoder_disabled(d, t) assert_transcoder(d, t, false)
+bool assert_port_valid(struct drm_i915_private *i915, enum port port);
+
/*
* Use I915_STATE_WARN(x) (rather than WARN() and WARN_ON()) for hw state sanity
* checks to check for unexpected conditions which may not necessarily be a user
return;
}
+ assert_port_valid(i915, intel_dvo->dev.port);
+
encoder->type = INTEL_OUTPUT_DVO;
encoder->power_domain = POWER_DOMAIN_PORT_OTHER;
encoder->port = intel_dvo->dev.port;
struct intel_sdvo *intel_sdvo;
int i;
+ if (!assert_port_valid(dev_priv, port))
+ return false;
+
assert_sdvo_port_valid(dev_priv, port);
intel_sdvo = kzalloc(sizeof(*intel_sdvo), GFP_KERNEL);