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Omap35xxPkg/MmcHostDxe: Clean code to respect EDK2 coding convention 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12254 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin 2011-09-01 16:33:51 +00:00
parent ef2455b175
commit 66f47f9fc0
1 changed files with 86 additions and 83 deletions
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169
Omap35xxPkg/MmcHostDxe/MmcHostDxe.c
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@ -16,9 +16,9 @@
#include "MmcHostDxe.h"
EMBEDDED_EXTERNAL_DEVICE *gTPS65950;
UINT8 MaxDataTransferRate = 0;
UINT32 Rca = 0;
BOOLEAN BitModeSet = FALSE;
UINT8 mMaxDataTransferRate = 0;
UINT32 mRca = 0;
BOOLEAN mBitModeSet = FALSE;
typedef struct {
@ -116,16 +116,17 @@ CalculateCardCLKD (
UINTN *ClockFrequencySelect
)
{
DEBUG((EFI_D_ERROR, "CalculateCardCLKD()\n"));
UINTN TransferRateValue = 0;
UINTN TimeValue = 0 ;
UINTN Frequency = 0;
DEBUG ((DEBUG_BLKIO, "CalculateCardCLKD()\n"));
// For SD Cards we would need to send CMD6 to set
// speeds abouve 25MHz. High Speed mode 50 MHz and up
//Calculate Transfer rate unit (Bits 2:0 of TRAN_SPEED)
switch (MaxDataTransferRate & 0x7) { // 2
// Calculate Transfer rate unit (Bits 2:0 of TRAN_SPEED)
switch (mMaxDataTransferRate & 0x7) { // 2
case 0:
TransferRateValue = 100 * 1000;
break;
@ -143,12 +144,13 @@ CalculateCardCLKD (
break;
default:
DEBUG((EFI_D_ERROR, "Invalid parameter.\n"));
DEBUG ((DEBUG_BLKIO, "Invalid parameter.\n"));
ASSERT(FALSE);
return;
}
//Calculate Time value (Bits 6:3 of TRAN_SPEED)
switch ((MaxDataTransferRate >> 3) & 0xF) { // 6
switch ((mMaxDataTransferRate >> 3) & 0xF) { // 6
case 1:
TimeValue = 10;
break;
@ -210,16 +212,17 @@ CalculateCardCLKD (
break;
default:
DEBUG((EFI_D_ERROR, "Invalid parameter.\n"));
DEBUG ((DEBUG_BLKIO, "Invalid parameter.\n"));
ASSERT(FALSE);
return;
}
Frequency = TransferRateValue * TimeValue/10;
//Calculate Clock divider value to program in MMCHS_SYSCTL[CLKD] field.
// Calculate Clock divider value to program in MMCHS_SYSCTL[CLKD] field.
*ClockFrequencySelect = ((MMC_REFERENCE_CLK/Frequency) + 1);
DEBUG ((EFI_D_INFO, "MaxDataTransferRate: 0x%x, Frequency: %d KHz, ClockFrequencySelect: %x\n", MaxDataTransferRate, Frequency/1000, *ClockFrequencySelect));
DEBUG ((DEBUG_BLKIO, "mMaxDataTransferRate: 0x%x, Frequency: %d KHz, ClockFrequencySelect: %x\n", mMaxDataTransferRate, Frequency/1000, *ClockFrequencySelect));
}
VOID
@ -227,17 +230,18 @@ UpdateMMCHSClkFrequency (
UINTN NewCLKD
)
{
DEBUG((EFI_D_ERROR, "UpdateMMCHSClkFrequency()\n"));
//Set Clock enable to 0x0 to not provide the clock to the card
DEBUG ((DEBUG_BLKIO, "UpdateMMCHSClkFrequency()\n"));
// Set Clock enable to 0x0 to not provide the clock to the card
MmioAnd32 (MMCHS_SYSCTL, ~CEN);
//Set new clock frequency.
// Set new clock frequency.
MmioAndThenOr32 (MMCHS_SYSCTL, ~CLKD_MASK, NewCLKD << 6);
//Poll till Internal Clock Stable
// Poll till Internal Clock Stable
while ((MmioRead32 (MMCHS_SYSCTL) & ICS_MASK) != ICS);
//Set Clock enable to 0x1 to provide the clock to the card
// Set Clock enable to 0x1 to provide the clock to the card
MmioOr32 (MMCHS_SYSCTL, CEN);
}
@ -246,21 +250,22 @@ InitializeMMCHS (
VOID
)
{
DEBUG((EFI_D_ERROR, "InitializeMMCHS()\n"));
UINT8 Data = 0;
UINT8 Data;
EFI_STATUS Status;
//Select Device group to belong to P1 device group in Power IC.
DEBUG ((DEBUG_BLKIO, "InitializeMMCHS()\n"));
// Select Device group to belong to P1 device group in Power IC.
Data = DEV_GRP_P1;
Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEV_GRP), 1, &Data);
ASSERT_EFI_ERROR(Status);
//Configure voltage regulator for MMC1 in Power IC to output 3.0 voltage.
// Configure voltage regulator for MMC1 in Power IC to output 3.0 voltage.
Data = VSEL_3_00V;
Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEDICATED_REG), 1, &Data);
ASSERT_EFI_ERROR(Status);
//After ramping up voltage, set VDDS stable bit to indicate that voltage level is stable.
// After ramping up voltage, set VDDS stable bit to indicate that voltage level is stable.
MmioOr32 (CONTROL_PBIAS_LITE, (PBIASLITEVMODE0 | PBIASLITEPWRDNZ0 | PBIASSPEEDCTRL0 | PBIASLITEVMODE1 | PBIASLITEWRDNZ1));
// Enable WP GPIO
@ -270,7 +275,6 @@ InitializeMMCHS (
Data = CARD_DETECT_ENABLE;
gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, TPS65950_GPIO_CTRL), 1, &Data);
return Status;
}
@ -279,7 +283,6 @@ MMCIsCardPresent (
VOID
)
{
//DEBUG((EFI_D_ERROR, "MMCIsCardPresent()\n"));
EFI_STATUS Status;
UINT8 Data;
@ -332,47 +335,48 @@ MMCSendCommand (
IN UINT32 Argument
)
{
UINTN MmcStatus;
UINTN RetryCount = 0;
if (IgnoreCommand(MmcCmd))
return EFI_SUCCESS;
MmcCmd = TranslateCommand(MmcCmd);
//DEBUG((EFI_D_ERROR, "MMCSendCommand(%d)\n", MmcCmd));
UINTN MmcStatus;
UINTN RetryCount = 0;
//DEBUG ((EFI_D_ERROR, "MMCSendCommand(%d)\n", MmcCmd));
//Check if command line is in use or not. Poll till command line is available.
// Check if command line is in use or not. Poll till command line is available.
while ((MmioRead32 (MMCHS_PSTATE) & DATI_MASK) == DATI_NOT_ALLOWED);
//Provide the block size.
// Provide the block size.
MmioWrite32 (MMCHS_BLK, BLEN_512BYTES);
//Setting Data timeout counter value to max value.
// Setting Data timeout counter value to max value.
MmioAndThenOr32 (MMCHS_SYSCTL, ~DTO_MASK, DTO_VAL);
//Clear Status register.
// Clear Status register.
MmioWrite32 (MMCHS_STAT, 0xFFFFFFFF);
//Set command argument register
// Set command argument register
MmioWrite32 (MMCHS_ARG, Argument);
//TODO: fix this
//Enable interrupt enable events to occur
//MmioWrite32 (MMCHS_IE, CmdInterruptEnableVal);
//Send a command
// Send a command
MmioWrite32 (MMCHS_CMD, MmcCmd);
//Check for the command status.
// Check for the command status.
while (RetryCount < MAX_RETRY_COUNT) {
do {
MmcStatus = MmioRead32 (MMCHS_STAT);
} while (MmcStatus == 0);
//Read status of command response
// Read status of command response
if ((MmcStatus & ERRI) != 0) {
//Perform soft-reset for mmci_cmd line.
// Perform soft-reset for mmci_cmd line.
MmioOr32 (MMCHS_SYSCTL, SRC);
while ((MmioRead32 (MMCHS_SYSCTL) & SRC));
@ -380,7 +384,7 @@ MMCSendCommand (
return EFI_DEVICE_ERROR;
}
//Check if command is completed.
// Check if command is completed.
if ((MmcStatus & CC) == CC) {
MmioWrite32 (MMCHS_STAT, CC);
break;
@ -390,7 +394,7 @@ MMCSendCommand (
}
if (RetryCount == MAX_RETRY_COUNT) {
DEBUG((EFI_D_ERROR, "MMCSendCommand: Timeout\n"));
DEBUG ((DEBUG_BLKIO, "MMCSendCommand: Timeout\n"));
return EFI_TIMEOUT;
}
@ -403,27 +407,28 @@ MMCNotifyState (
)
{
EFI_STATUS Status;
UINTN freqSel;
UINTN FreqSel;
switch(State) {
case MmcInvalidState:
ASSERT(0);
break;
case MmcHwInitializationState:
BitModeSet = FALSE;
mBitModeSet = FALSE;
DEBUG((EFI_D_ERROR, "MMCHwInitializationState()\n"));
DEBUG ((DEBUG_BLKIO, "MMCHwInitializationState()\n"));
Status = InitializeMMCHS ();
if (EFI_ERROR(Status)) {
DEBUG ((EFI_D_ERROR, "Initialize MMC host controller fails. Status: %x\n", Status));
DEBUG ((DEBUG_BLKIO, "Initialize MMC host controller fails. Status: %x\n", Status));
return Status;
}
//Software reset of the MMCHS host controller.
// Software reset of the MMCHS host controller.
MmioWrite32 (MMCHS_SYSCONFIG, SOFTRESET);
gBS->Stall(1000);
while ((MmioRead32 (MMCHS_SYSSTATUS) & RESETDONE_MASK) != RESETDONE);
//Soft reset for all.
// Soft reset for all.
MmioWrite32 (MMCHS_SYSCTL, SRA);
gBS->Stall(1000);
while ((MmioRead32 (MMCHS_SYSCTL) & SRA) != 0x0);
@ -431,52 +436,52 @@ MMCNotifyState (
//Voltage capabilities initialization. Activate VS18 and VS30.
MmioOr32 (MMCHS_CAPA, (VS30 | VS18));
//Wakeup configuration
// Wakeup configuration
MmioOr32 (MMCHS_SYSCONFIG, ENAWAKEUP);
MmioOr32 (MMCHS_HCTL, IWE);
//MMCHS Controller default initialization
// MMCHS Controller default initialization
MmioOr32 (MMCHS_CON, (OD | DW8_1_4_BIT | CEATA_OFF));
MmioWrite32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_OFF));
//Enable internal clock
// Enable internal clock
MmioOr32 (MMCHS_SYSCTL, ICE);
//Set the clock frequency to 80KHz.
// Set the clock frequency to 80KHz.
UpdateMMCHSClkFrequency (CLKD_80KHZ);
//Enable SD bus power.
// Enable SD bus power.
MmioOr32 (MMCHS_HCTL, (SDBP_ON));
//Poll till SD bus power bit is set.
// Poll till SD bus power bit is set.
while ((MmioRead32 (MMCHS_HCTL) & SDBP_MASK) != SDBP_ON);
//Enable interrupts.
// Enable interrupts.
MmioWrite32 (MMCHS_IE, (BADA_EN | CERR_EN | DEB_EN | DCRC_EN | DTO_EN | CIE_EN |
CEB_EN | CCRC_EN | CTO_EN | BRR_EN | BWR_EN | TC_EN | CC_EN));
//Controller INIT procedure start.
// Controller INIT procedure start.
MmioOr32 (MMCHS_CON, INIT);
MmioWrite32 (MMCHS_CMD, 0x00000000);
while (!(MmioRead32 (MMCHS_STAT) & CC));
//Wait for 1 ms
gBS->Stall(1000);
// Wait for 1 ms
gBS->Stall (1000);
//Set CC bit to 0x1 to clear the flag
// Set CC bit to 0x1 to clear the flag
MmioOr32 (MMCHS_STAT, CC);
//Retry INIT procedure.
// Retry INIT procedure.
MmioWrite32 (MMCHS_CMD, 0x00000000);
while (!(MmioRead32 (MMCHS_STAT) & CC));
//End initialization sequence
// End initialization sequence
MmioAnd32 (MMCHS_CON, ~INIT);
MmioOr32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_ON));
//Change clock frequency to 400KHz to fit protocol
// Change clock frequency to 400KHz to fit protocol
UpdateMMCHSClkFrequency(CLKD_400KHZ);
MmioOr32 (MMCHS_CON, OD);
@ -488,20 +493,20 @@ MMCNotifyState (
case MmcIdentificationState:
break;
case MmcStandByState:
CalculateCardCLKD(&freqSel);
UpdateMMCHSClkFrequency(freqSel);
CalculateCardCLKD (&FreqSel);
UpdateMMCHSClkFrequency (FreqSel);
break;
case MmcTransferState:
if (!BitModeSet) {
Status = MMCSendCommand (CMD55, Rca << 16);
if (!mBitModeSet) {
Status = MMCSendCommand (This, CMD55, mRca << 16);
if (!EFI_ERROR (Status)) {
// set device into 4-bit data bus mode
Status = MMCSendCommand (ACMD6, 0x2);
// Set device into 4-bit data bus mode
Status = MMCSendCommand (This, ACMD6, 0x2);
if (!EFI_ERROR (Status)) {
// Set host controler into 4-bit mode
// Set host controler into 4-bit mode
MmioOr32 (MMCHS_HCTL, DTW_4_BIT);
DEBUG ((EFI_D_INFO, "SD Memory Card set to 4-bit mode\n"));
BitModeSet = TRUE;
DEBUG ((DEBUG_BLKIO, "SD Memory Card set to 4-bit mode\n"));
mBitModeSet = TRUE;
}
}
}
@ -525,9 +530,7 @@ MMCReceiveResponse (
IN UINT32* Buffer
)
{
//DEBUG((EFI_D_ERROR, "MMCReceiveResponse()\n"));
if (Buffer == NULL) {
DEBUG((EFI_D_ERROR, "Buffer was NULL\n"));
return EFI_INVALID_PARAMETER;
}
@ -541,9 +544,9 @@ MMCReceiveResponse (
}
if (Type == MMC_RESPONSE_TYPE_CSD) {
MaxDataTransferRate = Buffer[3] & 0xFF;
mMaxDataTransferRate = Buffer[3] & 0xFF;
} else if (Type == MMC_RESPONSE_TYPE_RCA) {
Rca = Buffer[0] >> 16;
mRca = Buffer[0] >> 16;
}
return EFI_SUCCESS;
@ -556,24 +559,23 @@ MMCReadBlockData (
IN UINT32* Buffer
)
{
//DEBUG((EFI_D_ERROR, "MMCReadBlockData(LBA: 0x%x, ", Lba));
//DEBUG((EFI_D_ERROR, "Length: 0x%x, ", Length));
//DEBUG((EFI_D_ERROR, "Buffer: 0x%x)\n", Buffer));
UINTN MmcStatus;
UINTN Count;
UINTN RetryCount = 0;
//Check controller status to make sure there is no error.
DEBUG ((DEBUG_BLKIO, "MMCReadBlockData(LBA: 0x%x, Length: 0x%x, Buffer: 0x%x)\n", Lba, Length, Buffer));
// Check controller status to make sure there is no error.
while (RetryCount < MAX_RETRY_COUNT) {
do {
//Read Status.
// Read Status.
MmcStatus = MmioRead32 (MMCHS_STAT);
} while(MmcStatus == 0);
//Check if Buffer read ready (BRR) bit is set?
// Check if Buffer read ready (BRR) bit is set?
if (MmcStatus & BRR) {
//Clear BRR bit
// Clear BRR bit
MmioOr32 (MMCHS_STAT, BRR);
for (Count = 0; Count < Length / 4; Count++) {
@ -602,20 +604,20 @@ MMCWriteBlockData (
UINTN Count;
UINTN RetryCount = 0;
//Check controller status to make sure there is no error.
// Check controller status to make sure there is no error.
while (RetryCount < MAX_RETRY_COUNT) {
do {
//Read Status.
// Read Status.
MmcStatus = MmioRead32 (MMCHS_STAT);
} while(MmcStatus == 0);
//Check if Buffer write ready (BWR) bit is set?
// Check if Buffer write ready (BWR) bit is set?
if (MmcStatus & BWR) {
//Clear BWR bit
// Clear BWR bit
MmioOr32 (MMCHS_STAT, BWR);
//Write block worth of data.
// Write block worth of data.
for (Count = 0; Count < Length / 4; Count++) {
MmioWrite32 (MMCHS_DATA, *Buffer++);
}
@ -649,10 +651,11 @@ MMCInitialize (
IN EFI_SYSTEM_TABLE *SystemTable
)
{
DEBUG((EFI_D_ERROR, "MMCInitialize()\n"));
EFI_STATUS Status;
EFI_HANDLE Handle = NULL;
DEBUG ((DEBUG_BLKIO, "MMCInitialize()\n"));
Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);
ASSERT_EFI_ERROR(Status);