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/** @file
Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
Copyright (c) 2016, Linaro, Ltd. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/NonDiscoverableDeviceRegistrationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Protocol/EmbeddedExternalDevice.h>
#include <TPS65950.h>
#include <Omap3530/Omap3530.h>
EMBEDDED_EXTERNAL_DEVICE *gTPS65950;
#define HOST_CONTROLLER_OPERATION_REG_SIZE 0x44
STATIC
EFI_STATUS
ConfigureUSBHost (
NON_DISCOVERABLE_DEVICE *Device
)
{
EFI_STATUS Status;
UINT8 Data = 0;
// Take USB host out of force-standby mode
MmioWrite32 (UHH_SYSCONFIG, UHH_SYSCONFIG_MIDLEMODE_NO_STANDBY
| UHH_SYSCONFIG_CLOCKACTIVITY_ON
| UHH_SYSCONFIG_SIDLEMODE_NO_STANDBY
| UHH_SYSCONFIG_ENAWAKEUP_ENABLE
| UHH_SYSCONFIG_AUTOIDLE_ALWAYS_RUN);
MmioWrite32 (UHH_HOSTCONFIG, UHH_HOSTCONFIG_P3_CONNECT_STATUS_DISCONNECT
| UHH_HOSTCONFIG_P2_CONNECT_STATUS_DISCONNECT
| UHH_HOSTCONFIG_P1_CONNECT_STATUS_DISCONNECT
| UHH_HOSTCONFIG_ENA_INCR_ALIGN_DISABLE
| UHH_HOSTCONFIG_ENA_INCR16_ENABLE
| UHH_HOSTCONFIG_ENA_INCR8_ENABLE
| UHH_HOSTCONFIG_ENA_INCR4_ENABLE
| UHH_HOSTCONFIG_AUTOPPD_ON_OVERCUR_EN_ON
| UHH_HOSTCONFIG_P1_ULPI_BYPASS_ULPI_MODE);
// USB reset (GPIO 147 - Port 5 pin 19) output high
MmioAnd32 (GPIO5_BASE + GPIO_OE, ~BIT19);
MmioWrite32 (GPIO5_BASE + GPIO_SETDATAOUT, BIT19);
// Get the Power IC protocol
Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);
ASSERT_EFI_ERROR (Status);
// Power the USB PHY
Data = VAUX_DEV_GRP_P1;
Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VAUX2_DEV_GRP), 1, &Data);
ASSERT_EFI_ERROR(Status);
Data = VAUX_DEDICATED_18V;
Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VAUX2_DEDICATED), 1, &Data);
ASSERT_EFI_ERROR (Status);
// Enable power to the USB hub
Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID3, LEDEN), 1, &Data);
ASSERT_EFI_ERROR (Status);
// LEDAON controls the power to the USB host, PWM is disabled
Data &= ~LEDAPWM;
Data |= LEDAON;
Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID3, LEDEN), 1, &Data);
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
PciEmulationEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
UINT8 CapabilityLength;
UINT8 PhysicalPorts;
UINTN MemorySize;
CapabilityLength = MmioRead8 (USB_EHCI_HCCAPBASE);
PhysicalPorts = MmioRead32 (USB_EHCI_HCCAPBASE + 0x4) & 0x0000000F;
MemorySize = CapabilityLength + HOST_CONTROLLER_OPERATION_REG_SIZE +
4 * PhysicalPorts - 1;
return RegisterNonDiscoverableMmioDevice (
NonDiscoverableDeviceTypeEhci,
NonDiscoverableDeviceDmaTypeNonCoherent,
ConfigureUSBHost,
NULL,
1,
USB_EHCI_HCCAPBASE, MemorySize
);
}
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