drivers/intel/gma: Update port select bit definitions

This commit updates the port select bit definitions for the
TRANS_DDI_FUNC_CTL registers in the Intel GMA driver to accommodate
the changes introduced since TGL SoC.

Specifically, the following changes were made:

- Updated the DDI select bit definitions from 3-bits (bit 28-30) to
  4-bits (bit 27-30).
- Introduces `INTEL_GMA_VERSION_2` config to accommodate the port and
  pipe related differences between previous generation GMA register
  (TRANS_DDI_FUNC_CTL) to the current generation GMA register.

This commit backports the change from the following upstream patch:
https://patchwork.freedesktop.org/patch/msgid/20190713010940.17711-3-
lucas.demarchi@intel.com

BUG=b:299137940
TEST=Able to build and boot google/rex.

Change-Id: I815ffa90c2e235afd70baa7e3837e1f9af89b1b0
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78078
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/drivers/intel/gma/i915.h b/src/drivers/intel/gma/i915.h
index 8e9fc904f2..5c341046f5 100644
--- a/src/drivers/intel/gma/i915.h
+++ b/src/drivers/intel/gma/i915.h
@@ -30,6 +30,12 @@ enum port {
 	PORT_A = 0,
 	PORT_B,
 	PORT_C,
+#if CONFIG(INTEL_GMA_VERSION_2)
+	PORT_USB_C1,
+	PORT_USB_C2,
+	PORT_USB_C3,
+	PORT_USB_C4,
+#endif
 	PORT_D,
 	PORT_E,
 	I915_NUM_PORTS
@@ -39,6 +45,9 @@ enum pipe {
 	PIPE_A = 0,
 	PIPE_B,
 	PIPE_C,
+#if CONFIG(INTEL_GMA_VERSION_2)
+	PIPE_D,
+#endif
 	I915_NUM_PIPES
 };