Add and enum for TC ports and auxiliary functions to handle them.
Icelake brings a lot of registers and other things that only apply to
the TC ports and are indexed starting from 0, so having an enum for
tc_ports that starts at 0 really helps the indexing.
This patch is based on previous patches written by Dhinakaran Pandiyan
and Mahesh Kumar.
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Cc: Mahesh Kumar <mahesh1.kumar@xxxxxxxxx>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 16 ++++++++++++++++
drivers/gpu/drm/i915/intel_display.h | 11 +++++++++++
drivers/gpu/drm/i915/intel_drv.h | 3 +++
3 files changed, 30 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c9ec88acad9c..64593b0fbebd 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5807,6 +5807,22 @@ static void i9xx_pfit_enable(struct intel_crtc *crtc)
I915_WRITE(BCLRPAT(crtc->pipe), 0);
}
+bool intel_port_is_tc(struct drm_i915_private *dev_priv, enum port port)
+{
+ if (IS_ICELAKE(dev_priv))
+ return port >= PORT_C && port <= PORT_F;
+
+ return false;
+}
+
+enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv, enum port port)
+{
+ if (!intel_port_is_tc(dev_priv, port))
+ return PORT_TC_NONE;
+
+ return port - PORT_C;
+}
+
enum intel_display_power_domain intel_port_to_power_domain(enum port port)
{
switch (port) {
diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h
index 2ef31617614a..c88185ed7594 100644
--- a/drivers/gpu/drm/i915/intel_display.h
+++ b/drivers/gpu/drm/i915/intel_display.h
@@ -126,6 +126,17 @@ enum port {
#define port_name(p) ((p) + 'A')
+enum tc_port {
+ PORT_TC_NONE = -1,
+
+ PORT_TC1 = 0,
+ PORT_TC2,
+ PORT_TC3,
+ PORT_TC4,
+
+ I915_MAX_TC_PORTS
+};
+
enum dpio_channel {
DPIO_CH0,
DPIO_CH1
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 22af249393a4..a54232c270e1 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1493,6 +1493,9 @@ void intel_connector_attach_encoder(struct intel_connector *connector,
struct intel_encoder *encoder);
struct drm_display_mode *
intel_encoder_current_mode(struct intel_encoder *encoder);
+bool intel_port_is_tc(struct drm_i915_private *dev_priv, enum port port);
+enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv,
+ enum port port);
enum pipe intel_get_pipe_from_connector(struct intel_connector *connector);
int intel_get_pipe_from_crtc_id_ioctl(struct drm_device *dev, void *data,
--
2.14.3
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