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