DRM/I915: Add enum hpd_pin to intel_encoder.

To clean up hotplug support we add a new enum to intel_encoder:
enum hpd_pin. It allows the encoder to request a hpd line but leave
the details which IRQ is responsible on which chipset generation
to i915_irq.c.
This way requesting hotplug support will become really simple on
the encoder/connector level.

Signed-off-by: Egbert Eich <eich@suse.de>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

6 files changed, 27 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 7f6452b592aa..cda598d89f17 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -86,6 +86,19 @@ enum port {
 };
 #define port_name(p) ((p) + 'A')
 
+enum hpd_pin {
+        HPD_NONE = 0,
+        HPD_PORT_A = HPD_NONE, /* PORT_A is internal */
+        HPD_TV = HPD_NONE,     /* TV is known to be unreliable */
+        HPD_CRT,
+        HPD_SDVO_B,
+        HPD_SDVO_C,
+        HPD_PORT_B,
+        HPD_PORT_C,
+        HPD_PORT_D,
+        HPD_NUM_PINS
+};
+
 #define I915_GEM_GPU_DOMAINS \
         (I915_GEM_DOMAIN_RENDER | \
          I915_GEM_DOMAIN_SAMPLER | \
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 32a3693905ec..a4b3e4e01e65 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -776,6 +776,8 @@ void intel_crt_init(struct drm_device *dev)
 
         crt->base.disable = intel_disable_crt;
         crt->base.enable = intel_enable_crt;
+        if (I915_HAS_HOTPLUG(dev))
+                crt->base.hpd_pin = HPD_CRT;
         if (HAS_DDI(dev))
                 crt->base.get_hw_state = intel_ddi_get_hw_state;
         else
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 2f2ec42a417a..c7c5635f06e0 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2821,18 +2821,22 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
         /* Set up the DDC bus. */
         switch (port) {
         case PORT_A:
+                intel_encoder->hpd_pin = HPD_PORT_A;
                 name = "DPDDC-A";
                 break;
         case PORT_B:
                 dev_priv->hotplug_supported_mask |= PORTB_HOTPLUG_INT_STATUS;
+                intel_encoder->hpd_pin = HPD_PORT_B;
                 name = "DPDDC-B";
                 break;
         case PORT_C:
                 dev_priv->hotplug_supported_mask |= PORTC_HOTPLUG_INT_STATUS;
+                intel_encoder->hpd_pin = HPD_PORT_C;
                 name = "DPDDC-C";
                 break;
         case PORT_D:
                 dev_priv->hotplug_supported_mask |= PORTD_HOTPLUG_INT_STATUS;
+                intel_encoder->hpd_pin = HPD_PORT_D;
                 name = "DPDDC-D";
                 break;
         default:
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 276f6651dcc3..54bc2ea61fa9 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -168,6 +168,7 @@ struct intel_encoder {
          * it is connected to in the pipe parameter. */
         bool (*get_hw_state)(struct intel_encoder *, enum pipe *pipe);
         int crtc_mask;
+        enum hpd_pin hpd_pin;
 };
 
 struct intel_panel {
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 2474b1b6de61..6d92aebadfc3 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -988,17 +988,21 @@ void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
         switch (port) {
         case PORT_B:
                 intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
+                intel_encoder->hpd_pin = HPD_PORT_B;
                 dev_priv->hotplug_supported_mask |= PORTB_HOTPLUG_INT_STATUS;
                 break;
         case PORT_C:
                 intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
+                intel_encoder->hpd_pin = HPD_PORT_C;
                 dev_priv->hotplug_supported_mask |= PORTC_HOTPLUG_INT_STATUS;
                 break;
         case PORT_D:
                 intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
+                intel_encoder->hpd_pin = HPD_PORT_D;
                 dev_priv->hotplug_supported_mask |= PORTD_HOTPLUG_INT_STATUS;
                 break;
         case PORT_A:
+                intel_encoder->hpd_pin = HPD_PORT_A;
                 /* Internal port only for eDP. */
         default:
                 BUG();
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 678c47cac72b..0ff557fe2f60 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -2779,6 +2779,9 @@ bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg, bool is_sdvob)
                         SDVOB_HOTPLUG_INT_STATUS_I915 : SDVOC_HOTPLUG_INT_STATUS_I915;
         }
 
+        if (intel_sdvo->hotplug_active)
+                intel_encoder->hpd_pin = HPD_SDVO_B ? HPD_SDVO_B : HPD_SDVO_C;
+
         drm_encoder_helper_add(&intel_encoder->base, &intel_sdvo_helper_funcs);
 
         intel_encoder->disable = intel_disable_sdvo;