[PATCH] drm/i915: add port parameter to intel_hdmi_init

Daniel Vetter
2012-07-12T19:26:03Z

Instead of having a giant if cascade to figure this out according to
the passed-in register. We could do quite a bit more cleaning up and
all by using the port at more places, but I think this should be part
of a bigger rework to introduce a struct intel_digital_port which
would keep track of all these things. I guess this will be part of
some haswell-DP-induced refactoring.

For now this rips out the big cascade, which is what annoyed me so
much.

v2: Add port variable name back for the func decl (I've tried to trick
myself below the 80 char limit).

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/i915/intel_ddi.c | 2 +-
drivers/gpu/drm/i915/intel_display.c | 14 +++++-----
drivers/gpu/drm/i915/intel_drv.h | 3 +-
drivers/gpu/drm/i915/intel_hdmi.c | 41 ++++++++++------------------------
4 files changed, 22 insertions(+), 38 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index fd60f48..5370d17 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -250,7 +250,7 @@ void intel_ddi_init(struct drm_device *dev, enum port port)
case PORT_B:
case PORT_C:
case PORT_D:
- intel_hdmi_init(dev, DDI_BUF_CTL(port));
+ intel_hdmi_init(dev, DDI_BUF_CTL(port), port);
break;
default:
DRM_DEBUG_DRIVER("No handlers defined for port %d, skipping DDI initialization\n",
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 38891ff..3769e5f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6807,16 +6807,16 @@ static void intel_setup_outputs(struct drm_device *dev)
/* PCH SDVOB multiplex with HDMIB */
found = intel_sdvo_init(dev, PCH_SDVOB, true);
if (!found)
- intel_hdmi_init(dev, HDMIB);
+ intel_hdmi_init(dev, HDMIB, PORT_B);
if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
intel_dp_init(dev, PCH_DP_B);
}

if (I915_READ(HDMIC) & PORT_DETECTED)
- intel_hdmi_init(dev, HDMIC);
+ intel_hdmi_init(dev, HDMIC, PORT_C);

if (!dpd_is_edp && I915_READ(HDMID) & PORT_DETECTED)
- intel_hdmi_init(dev, HDMID);
+ intel_hdmi_init(dev, HDMID, PORT_D);

if (I915_READ(PCH_DP_C) & DP_DETECTED)
intel_dp_init(dev, PCH_DP_C);
@@ -6830,13 +6830,13 @@ static void intel_setup_outputs(struct drm_device *dev)
/* SDVOB multiplex with HDMIB */
found = intel_sdvo_init(dev, SDVOB, true);
if (!found)
- intel_hdmi_init(dev, SDVOB);
+ intel_hdmi_init(dev, SDVOB, PORT_B);
if (!found && (I915_READ(DP_B) & DP_DETECTED))
intel_dp_init(dev, DP_B);
}

if (I915_READ(SDVOC) & PORT_DETECTED)
- intel_hdmi_init(dev, SDVOC);
+ intel_hdmi_init(dev, SDVOC, PORT_C);

/* Shares lanes with HDMI on SDVOC */
if (I915_READ(DP_C) & DP_DETECTED)
@@ -6849,7 +6849,7 @@ static void intel_setup_outputs(struct drm_device *dev)
found = intel_sdvo_init(dev, SDVOB, true);
if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
- intel_hdmi_init(dev, SDVOB);
+ intel_hdmi_init(dev, SDVOB, PORT_B);
}

if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
@@ -6869,7 +6869,7 @@ static void intel_setup_outputs(struct drm_device *dev)

if (SUPPORTS_INTEGRATED_HDMI(dev)) {
DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
- intel_hdmi_init(dev, SDVOC);
+ intel_hdmi_init(dev, SDVOC, PORT_C);
}
if (SUPPORTS_INTEGRATED_DP(dev)) {
DRM_DEBUG_KMS("probing DP_C\n");
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index f8c1f04..ff78679 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -336,7 +336,8 @@ extern void intel_attach_force_audio_property(struct drm_connector *connector);
extern void intel_attach_broadcast_rgb_property(struct drm_connector *connector);

extern void intel_crt_init(struct drm_device *dev);
-extern void intel_hdmi_init(struct drm_device *dev, int sdvox_reg);
+extern void intel_hdmi_init(struct drm_device *dev,
+ int sdvox_reg, enum port port);
extern struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
extern void intel_dip_infoframe_csum(struct dip_infoframe *avi_if);
extern bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg,
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index b01900d..1332367 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -925,7 +925,7 @@ intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *c
intel_attach_broadcast_rgb_property(connector);
}

-void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
+void intel_hdmi_init(struct drm_device *dev, int sdvox_reg, enum port port)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_connector *connector;
@@ -961,40 +961,23 @@ void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)

intel_encoder->cloneable = false;

- /* Set up the DDC bus. */
- if (sdvox_reg == SDVOB) {
+ intel_hdmi->ddi_port = port;
+ switch (port) {
+ case PORT_B:
intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
- } else if (sdvox_reg == SDVOC) {
- intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
- dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
- } else if (sdvox_reg == HDMIB) {
- intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
- dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
- } else if (sdvox_reg == HDMIC) {
- intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
- dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
- } else if (sdvox_reg == HDMID) {
- intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
- dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
- } else if (sdvox_reg == DDI_BUF_CTL(PORT_B)) {
- DRM_DEBUG_DRIVER("LPT: detected output on DDI B\n");
- intel_hdmi->ddc_bus = GMBUS_PORT_DPB;
- intel_hdmi->ddi_port = PORT_B;
- dev_priv->hotplug_supported_mask |= HDMIB_HOTPLUG_INT_STATUS;
- } else if (sdvox_reg == DDI_BUF_CTL(PORT_C)) {
- DRM_DEBUG_DRIVER("LPT: detected output on DDI C\n");
+ break;
+ case PORT_C:
intel_hdmi->ddc_bus = GMBUS_PORT_DPC;
- intel_hdmi->ddi_port = PORT_C;
dev_priv->hotplug_supported_mask |= HDMIC_HOTPLUG_INT_STATUS;
- } else if (sdvox_reg == DDI_BUF_CTL(PORT_D)) {
- DRM_DEBUG_DRIVER("LPT: detected output on DDI D\n");
+ break;
+ case PORT_D:
intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
- intel_hdmi->ddi_port = PORT_D;
dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
- } else {
- /* If we got an unknown sdvox_reg, things are pretty much broken
- * in a way that we should let the kernel know about it */
+ break;
+ case PORT_A:
+ /* Internal port only for eDP. */
+ default:
BUG();
}

--
1.7.7.6