MdeModulePkg/SdMmcPciHcDxe: Add SwitchClockFreqPost to SdMmcOverride

Some SD Host Controlers need to do additional operations after clock
frequency switch.

This patch add new callback type to NotifyPhase of the SdMmcOverride
protocol. It is called after SdMmcHcClockSupply.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>

2 files changed, 45 insertions, 4 deletions

diff --git a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c
index db4e8a1..b75a9bb 100755
--- a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c
+++ b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c
@@ -651,6 +651,7 @@ EmmcSwitchBusWidth (
   @param[in] Slot           The slot number of the SD card to send the command to.

   @param[in] Rca            The relative device address to be assigned.

   @param[in] HsTiming       The value to be written to HS_TIMING field of EXT_CSD register.

+  @param[in] Timing         The bus mode timing indicator.

   @param[in] ClockFreq      The max clock frequency to be set, the unit is MHz.

 

   @retval EFI_SUCCESS       The operation is done correctly.

@@ -664,6 +665,7 @@ EmmcSwitchClockFreq (
   IN UINT8                              Slot,

   IN UINT16                             Rca,

   IN UINT8                              HsTiming,

+  IN SD_MMC_BUS_MODE                    Timing,

   IN UINT32                             ClockFreq

   )

 {

@@ -706,6 +708,27 @@ EmmcSwitchClockFreq (
   // Convert the clock freq unit from MHz to KHz.

   //

   Status = SdMmcHcClockSupply (PciIo, Slot, ClockFreq * 1000, Private->Capability[Slot]);

+  if (EFI_ERROR (Status)) {

+    return Status;

+  }

+

+  if (mOverride != NULL && mOverride->NotifyPhase != NULL) {

+    Status = mOverride->NotifyPhase (

+                          Private->ControllerHandle,

+                          Slot,

+                          EdkiiSdMmcSwitchClockFreqPost,

+                          &Timing

+                          );

+    if (EFI_ERROR (Status)) {

+      DEBUG ((

+        DEBUG_ERROR,

+        "%a: SD/MMC switch clock freq post notifier callback failed - %r\n",

+        __FUNCTION__,

+        Status

+        ));

+      return Status;

+    }

+  }

 

   return Status;

 }

@@ -775,7 +798,7 @@ EmmcSwitchToHighSpeed (
   }

 

   HsTiming = 1;

-  Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, ClockFreq);

+  Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, Timing, ClockFreq);

 

   return Status;

 }

@@ -863,7 +886,7 @@ EmmcSwitchToHS200 (
   Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_CLOCK_CTRL, sizeof (ClockCtrl), &ClockCtrl);

 

   HsTiming = 2;

-  Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, ClockFreq);

+  Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, Timing, ClockFreq);

   if (EFI_ERROR (Status)) {

     return Status;

   }

@@ -913,7 +936,7 @@ EmmcSwitchToHS400 (
   // Set to Hight Speed timing and set the clock frequency to a value less than 52MHz.

   //

   HsTiming = 1;

-  Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, 52);

+  Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, SdMmcMmcHsSdr, 52);

   if (EFI_ERROR (Status)) {

     return Status;

   }

@@ -933,7 +956,7 @@ EmmcSwitchToHS400 (
   }

 

   HsTiming = 3;

-  Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, ClockFreq);

+  Status = EmmcSwitchClockFreq (PciIo, PassThru, Slot, Rca, HsTiming, Timing, ClockFreq);

 

   return Status;

 }

diff --git a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
index 55b3564..32fd416 100644
--- a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
+++ b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/SdDevice.c
@@ -869,6 +869,24 @@ SdCardSetBusMode (
     return Status;

   }

 

+  if (mOverride != NULL && mOverride->NotifyPhase != NULL) {

+    Status = mOverride->NotifyPhase (

+                          Private->ControllerHandle,

+                          Slot,

+                          EdkiiSdMmcSwitchClockFreqPost,

+                          &Timing

+                          );

+    if (EFI_ERROR (Status)) {

+      DEBUG ((

+        DEBUG_ERROR,

+        "%a: SD/MMC switch clock freq post notifier callback failed - %r\n",

+        __FUNCTION__,

+        Status

+        ));

+      return Status;

+    }

+  }

+

   if ((AccessMode == 3) || ((AccessMode == 2) && (Capability->TuningSDR50 != 0))) {

     Status = SdCardTuningClock (PciIo, PassThru, Slot);

     if (EFI_ERROR (Status)) {