[PATCH 36/81] drm/i915/hdmi: implement get_hw_state

Daniel Vetter
2012-07-11T15:35:57Z

drivers/gpu/drm/i915/intel_ddi.c | 29 +++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_drv.h | 2 ++
drivers/gpu/drm/i915/intel_hdmi.c | 24 ++++++++++++++++++++++++
3 files changed, 55 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 5370d17..7fdc5d9 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -738,6 +738,35 @@ void intel_ddi_mode_set(struct drm_encoder *encoder,
intel_hdmi->set_infoframes(encoder, adjusted_mode);
}

+bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
+ enum pipe *pipe)
+{
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
+ u32 tmp;
+ int i;
+
+ tmp = I915_READ(DDI_BUF_CTL(intel_hdmi->ddi_port));
+
+ if (!(tmp & DDI_BUF_CTL_ENABLE))
+ return false;
+
+ for_each_pipe(i) {
+ tmp = I915_READ(DDI_FUNC_CTL(i));
+
+ if ((tmp & PIPE_DDI_PORT_MASK)
+ == PIPE_DDI_SELECT_PORT(intel_hdmi->ddi_port)) {
+ *pipe = i;
+ return true;
+ }
+ }
+
+ DRM_DEBUG_KMS("No pipe for ddi port %i found\n", intel_hdmi->ddi_port);
+
+ return true;
+}
+
void intel_enable_ddi(struct intel_encoder *encoder)
{
struct drm_device *dev = encoder->base.dev;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index c06cfda..28cf6cc 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -514,6 +514,8 @@ extern void ironlake_teardown_rc6(struct drm_device *dev);

extern void intel_enable_ddi(struct intel_encoder *encoder);
extern void intel_disable_ddi(struct intel_encoder *encoder);
+extern bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
+ enum pipe *pipe);
extern void intel_ddi_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 1782357..3ccf7fd 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -601,6 +601,27 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder,
intel_hdmi->set_infoframes(encoder, adjusted_mode);
}

+static bool intel_hdmi_get_hw_state(struct intel_encoder *encoder,
+ enum pipe *pipe)
+{
+ struct drm_device *dev = encoder->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
+ u32 tmp;
+
+ tmp = I915_READ(intel_hdmi->sdvox_reg);
+
+ if (!(tmp & SDVO_ENABLE))
+ return false;
+
+ if (HAS_PCH_CPT(dev))
+ *pipe = PORT_TO_PIPE_CPT(tmp);
+ else
+ *pipe = PORT_TO_PIPE(tmp);
+
+ return true;
+}
+
static void intel_enable_hdmi(struct intel_encoder *encoder)
{
struct drm_device *dev = encoder->base.dev;
@@ -999,14 +1020,17 @@ void intel_hdmi_init(struct drm_device *dev, int sdvox_reg, enum port port)
if (IS_HASWELL(dev)) {
intel_encoder->enable = intel_enable_ddi;
intel_encoder->disable = intel_disable_ddi;
+ intel_encoder->get_hw_state = intel_ddi_get_hw_state;
drm_encoder_helper_add(&intel_encoder->base,
&intel_hdmi_helper_funcs_hsw);
} else {
intel_encoder->enable = intel_enable_hdmi;
intel_encoder->disable = intel_disable_hdmi;
+ intel_encoder->get_hw_state = intel_hdmi_get_hw_state;
drm_encoder_helper_add(&intel_encoder->base,
&intel_hdmi_helper_funcs);
}
+ intel_connector->get_hw_state = intel_connector_get_hw_state;

intel_hdmi_add_properties(intel_hdmi, connector);
--
1.7.7.6