@@ -61,6 +61,38 @@ static struct intel_lspcon
return enc_to_lspcon(&intel_attached_encoder(connector)->base);
}
+enum irqreturn
+lspcon_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
+{
+ struct drm_device *dev = intel_dig_port->base.base.dev;
+ struct intel_encoder *intel_encoder = &intel_dig_port->base;
+ struct intel_connector *intel_connector;
+ bool changed = false;
+
+ mutex_lock(&dev->mode_config.mutex);
+ if (intel_encoder->hot_plug)
+ intel_encoder->hot_plug(intel_encoder);
+
+ for_each_intel_connector(dev, intel_connector) {
+ if (intel_connector->encoder == intel_encoder) {
+ struct drm_connector *connector =
+ &intel_connector->base;
+
+ DRM_DEBUG_DRIVER("Hptplug: Connector %s (pin %i).\n",
+ connector->name, intel_encoder->hpd_pin);
+ if (intel_hpd_irq_event(dev, connector))
+ changed = true;
+ }
+ }
+ mutex_unlock(&dev->mode_config.mutex);
+
+ if (changed) {
+ DRM_DEBUG_DRIVER("Sending event for change\n");
+ drm_kms_helper_hotplug_event(dev);
+ }
+ return IRQ_HANDLED;
+}
+
enum lspcon_mode lspcon_get_current_mode(struct intel_lspcon *lspcon)
{
u8 data;
@@ -396,6 +428,9 @@ int intel_lspcon_init_connector(struct intel_digital_port *intel_dig_port)
intel_connector->get_hw_state = intel_ddi_connector_get_hw_state;
i915_debugfs_connector_add(connector);
+ /* HPD handler */
+ intel_dig_port->hpd_pulse = lspcon_hpd_pulse;
+
/* init DP */
ret = intel_dp_init_minimum(intel_dig_port, intel_connector);
if (ret) {
This patch adds a new hpd handler for lspcon. As lspcon has its own way of reading EDID and detecting the device, it wont be efficient to use the existing hpd functions to handle the hot_plug scenarios. This new function reads the EDID and checks the status of the sink device. Signed-off-by: Shashank Sharma <shashank.sharma@intel.com> --- drivers/gpu/drm/i915/intel_lspcon.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)