[platforms: PATCH v3 22/25] Marvell/Armada7k8k: Extend ArmadaSoCDescLib with I2C information

[Marcin Wojtas <mw@semihalf.com>]

This patch introduces new library callback (ArmadaSoCDescI2cGet ()),
which dynamically allocates and fills MV_SOC_I2C_DESC structure with
the SoC description of I2c controllers.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
---
 Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.h |  6 ++++
 Silicon/Marvell/Include/Library/ArmadaSoCDescLib.h                             | 15 ++++++++++
 Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.c | 31 ++++++++++++++++++++
 3 files changed, 52 insertions(+)

diff --git a/Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.h b/Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.h
index 87fc140..3072883 100644
--- a/Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.h
+++ b/Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.h
@@ -38,6 +38,12 @@
 #define MV_SOC_COMPHY_MUX_BITS           4
 
 //
+// Platform description of I2C controllers
+//
+#define MV_SOC_I2C_PER_CP_COUNT          2
+#define MV_SOC_I2C_BASE(I2c)             (0x701000 + ((I2c) * 0x100))
+
+//
 // Platform description of MDIO controllers
 //
 #define MV_SOC_MDIO_BASE(Cp)             (MV_SOC_CP_BASE (Cp) + 0x12A200)
diff --git a/Silicon/Marvell/Include/Library/ArmadaSoCDescLib.h b/Silicon/Marvell/Include/Library/ArmadaSoCDescLib.h
index 304d068..d2bcf2a 100644
--- a/Silicon/Marvell/Include/Library/ArmadaSoCDescLib.h
+++ b/Silicon/Marvell/Include/Library/ArmadaSoCDescLib.h
@@ -37,6 +37,21 @@ ArmadaSoCDescComPhyGet (
   );
 
 //
+// I2C
+//
+typedef struct {
+  UINTN I2cId;
+  UINTN I2cBaseAddress;
+} MV_SOC_I2C_DESC;
+
+EFI_STATUS
+EFIAPI
+ArmadaSoCDescI2cGet (
+  IN OUT MV_SOC_I2C_DESC  **I2cDesc,
+  IN OUT UINTN             *DescCount
+  );
+
+//
 // MDIO
 //
 typedef struct {
diff --git a/Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.c b/Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.c
index 652677f..6ce6bad 100644
--- a/Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.c
+++ b/Silicon/Marvell/Armada7k8k/Library/Armada7k8kSoCDescLib/Armada7k8kSoCDescLib.c
@@ -63,6 +63,37 @@ ArmadaSoCDescComPhyGet (
 
 EFI_STATUS
 EFIAPI
+ArmadaSoCDescI2cGet (
+  IN OUT MV_SOC_I2C_DESC  **I2cDesc,
+  IN OUT UINTN             *DescCount
+  )
+{
+  MV_SOC_I2C_DESC *Desc;
+  UINTN CpCount, CpIndex, Index;
+
+  CpCount = FixedPcdGet8 (PcdMaxCpCount);
+
+  *DescCount = CpCount * MV_SOC_I2C_PER_CP_COUNT;
+  Desc = AllocateZeroPool (*DescCount * sizeof (MV_SOC_I2C_DESC));
+  if (Desc == NULL) {
+    DEBUG ((DEBUG_ERROR, "%a: Cannot allocate memory\n", __FUNCTION__));
+    return EFI_OUT_OF_RESOURCES;
+  }
+
+  *I2cDesc = Desc;
+
+  for (CpIndex = 0; CpIndex < CpCount; CpIndex++) {
+    for (Index = 0; Index < MV_SOC_I2C_PER_CP_COUNT; Index++) {
+      Desc->I2cBaseAddress = MV_SOC_CP_BASE (CpIndex) + MV_SOC_I2C_BASE (Index);
+      Desc++;
+    }
+  }
+
+  return EFI_SUCCESS;
+}
+
+EFI_STATUS
+EFIAPI
 ArmadaSoCDescMdioGet (
   IN OUT MV_SOC_MDIO_DESC  **MdioDesc,
   IN OUT UINTN              *DescCount
-- 
2.7.4