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path: root/arch/arm/mach-tegra/odm_kit/adaptations/misc/whistler/nvodm_usbulpi.c
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/*
 * Copyright (c) 2009 NVIDIA Corporation.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

/**
 * @file          nvodm_usbulpi.c
 * @brief         <b>Adaptation for USB ULPI </b>
 *
 * @Description : Implementation of the USB ULPI adaptation.
 */
#include "nvodm_usbulpi.h"
#include "nvodm_services.h"
#include "nvodm_query_discovery.h"
#include "nvodm_services.h"
#include "nvodm_keylist_reserved.h"
#include "nvrm_drf.h"
#include "nvos.h"

typedef struct NvOdmUsbUlpiRec {
	NvU64 CurrentGUID;
} NvOdmUsbUlpi;

/* ST-Ericsson U3XX modem power control */
struct ste_u3xx_info {
	NvU32 ste_u3xx_uart_port;
	NvU32 ste_u3xx_reset_port;
	NvU32 ste_u3xx_reset_pin;
	NvU32 ste_u3xx_power_port;
	NvU32 ste_u3xx_power_pin;
	NvU32 ste_u3xx_awr_port;
	NvU32 ste_u3xx_awr_pin;
	NvU32 ste_u3xx_cwr_port;
	NvU32 ste_u3xx_cwr_pin;
	NvU32 ste_u3xx_spi_int_port;
	NvU32 ste_u3xx_spi_int_pin;
	NvU32 ste_u3xx_slave_select_port;
	NvU32 ste_u3xx_slave_select_pin;
	NvU32 ste_u3xx_slink_instance;
};

/* ST-Ericsson U3XX modem control */
static struct ste_u3xx_info ste_u3xx_info;
static NvOdmServicesGpioHandle ste_u3xx_gpio;
static NvOdmGpioPinHandle ste_u3xx_reset_gpio_pin;
static NvOdmGpioPinHandle ste_u3xx_power_gpio_pin;
static NvOdmGpioPinHandle ste_u3xx_awr_gpio_pin;
static NvOdmGpioPinHandle ste_u3xx_cwr_gpio_pin;

static int ste_u3xx_query(struct ste_u3xx_info *info)
{
	NvU64 guid = NV_ODM_GUID('e', 'm', 'p', ' ', 'M', '5', '7', '0');
	NvOdmPeripheralConnectivity *pConnectivity;

	/* query odm kit for modem support */
	pConnectivity =
	    (NvOdmPeripheralConnectivity *) NvOdmPeripheralGetGuid(guid);
	if (pConnectivity == NULL)
		return -1;
	NV_ASSERT(pConnectivity->NumAddress >= 5);

	/* query for uart port */
	NV_ASSERT(pConnectivity->AddressList[0].Interface ==
		  NvOdmIoModule_Uart);
	info->ste_u3xx_uart_port = pConnectivity->AddressList[0].Instance;

	/* query for reset pin */
	NV_ASSERT(pConnectivity->AddressList[1].Interface ==
		  NvOdmIoModule_Gpio);
	info->ste_u3xx_reset_port = pConnectivity->AddressList[1].Instance;
	info->ste_u3xx_reset_pin = pConnectivity->AddressList[1].Address;

	/* query for power pin */
	NV_ASSERT(pConnectivity->AddressList[2].Interface ==
		  NvOdmIoModule_Gpio);
	info->ste_u3xx_power_port = pConnectivity->AddressList[2].Instance;
	info->ste_u3xx_power_pin = pConnectivity->AddressList[2].Address;

	/* query for ACPU wakeup request pin */
	NV_ASSERT(pConnectivity->AddressList[3].Interface ==
		  NvOdmIoModule_Gpio);
	info->ste_u3xx_awr_port = pConnectivity->AddressList[3].Instance;
	info->ste_u3xx_awr_pin = pConnectivity->AddressList[3].Address;

	/* query for CCPU wakeup request pin */
	NV_ASSERT(pConnectivity->AddressList[4].Interface ==
		  NvOdmIoModule_Gpio);
	info->ste_u3xx_cwr_port = pConnectivity->AddressList[4].Instance;
	info->ste_u3xx_cwr_pin = pConnectivity->AddressList[4].Address;

	return 0;
}

static void ste_u3xx_turn_on_modem(struct ste_u3xx_info *info)
{
	/* get odm gpio handle */
	ste_u3xx_gpio = NvOdmGpioOpen();
	if (!ste_u3xx_gpio)
		return;

	/* acquire pin handle for reset pin */
	ste_u3xx_reset_gpio_pin =
	    NvOdmGpioAcquirePinHandle(ste_u3xx_gpio, info->ste_u3xx_reset_port,
				      info->ste_u3xx_reset_pin);
	if (!ste_u3xx_reset_gpio_pin) {
		NvOdmGpioClose(ste_u3xx_gpio);
		return;
	}

	/* acquire pin handle for power pin */
	ste_u3xx_power_gpio_pin =
	    NvOdmGpioAcquirePinHandle(ste_u3xx_gpio, info->ste_u3xx_power_port,
				      info->ste_u3xx_power_pin);
	if (!ste_u3xx_power_gpio_pin) {
		NvOdmGpioReleasePinHandle(ste_u3xx_gpio,
					  ste_u3xx_reset_gpio_pin);
		NvOdmGpioClose(ste_u3xx_gpio);
		return;
	}

	/* acquire pin handle for ACPU wakeup request pin */
	ste_u3xx_awr_gpio_pin =
	    NvOdmGpioAcquirePinHandle(ste_u3xx_gpio, info->ste_u3xx_awr_port,
				      info->ste_u3xx_awr_pin);
	if (!ste_u3xx_awr_gpio_pin) {
		NvOdmGpioReleasePinHandle(ste_u3xx_gpio,
					  ste_u3xx_power_gpio_pin);
		NvOdmGpioReleasePinHandle(ste_u3xx_gpio,
					  ste_u3xx_reset_gpio_pin);
		NvOdmGpioClose(ste_u3xx_gpio);
		return;
	}

	/* acquire pin handle for CCPU wakeup request pin */
	ste_u3xx_cwr_gpio_pin =
	    NvOdmGpioAcquirePinHandle(ste_u3xx_gpio, info->ste_u3xx_cwr_port,
				      info->ste_u3xx_cwr_pin);
	if (!ste_u3xx_cwr_gpio_pin) {
		NvOdmGpioReleasePinHandle(ste_u3xx_gpio, ste_u3xx_awr_gpio_pin);
		NvOdmGpioReleasePinHandle(ste_u3xx_gpio,
					  ste_u3xx_power_gpio_pin);
		NvOdmGpioReleasePinHandle(ste_u3xx_gpio,
					  ste_u3xx_reset_gpio_pin);
		NvOdmGpioClose(ste_u3xx_gpio);
		return;
	}

	/* set output levels - start with modem power off, reset deasserted */
	NvOdmGpioSetState(ste_u3xx_gpio, ste_u3xx_power_gpio_pin, 0);
	NvOdmGpioSetState(ste_u3xx_gpio, ste_u3xx_reset_gpio_pin, 0);
	NvOdmGpioConfig(ste_u3xx_gpio, ste_u3xx_power_gpio_pin,
			NvOdmGpioPinMode_Output);
	NvOdmGpioConfig(ste_u3xx_gpio, ste_u3xx_reset_gpio_pin,
			NvOdmGpioPinMode_Output);
	NvOdmGpioConfig(ste_u3xx_gpio, ste_u3xx_cwr_gpio_pin,
			NvOdmGpioPinMode_InputData);

	NvOdmOsSleepMS(300);
	NvOdmGpioSetState(ste_u3xx_gpio, ste_u3xx_reset_gpio_pin, 1);

	/* pulse modem power on for 1200 ms */
	NvOdmOsSleepMS(300);
	NvOdmGpioSetState(ste_u3xx_gpio, ste_u3xx_power_gpio_pin, 1);
	NvOdmOsSleepMS(1200);
	NvOdmGpioSetState(ste_u3xx_gpio, ste_u3xx_power_gpio_pin, 0);
	NvOdmOsSleepMS(100);

	NvOdmGpioReleasePinHandle(ste_u3xx_gpio, ste_u3xx_cwr_gpio_pin);
	NvOdmGpioReleasePinHandle(ste_u3xx_gpio, ste_u3xx_awr_gpio_pin);
	NvOdmGpioReleasePinHandle(ste_u3xx_gpio, ste_u3xx_power_gpio_pin);
	NvOdmGpioReleasePinHandle(ste_u3xx_gpio, ste_u3xx_reset_gpio_pin);
	NvOdmGpioClose(ste_u3xx_gpio);
}

NvOdmUsbUlpiHandle NvOdmUsbUlpiOpen(NvU32 Instance)
{
	const NvOdmUsbProperty *pUsbProperty =
		NvOdmQueryGetUsbProperty(NvOdmIoModule_Usb, Instance);
	NvOdmUsbUlpi *pDevice = NULL;

	pDevice = NvOdmOsAlloc(sizeof(NvOdmUsbUlpi));
	if (pDevice == NULL)
		goto ExitUlpiOdm;

	if (pUsbProperty->UsbInterfaceType ==
		NvOdmUsbInterfaceType_UlpiNullPhy) {
		/* query the modem control pins */
		if (ste_u3xx_query(&ste_u3xx_info) < 0)
			goto ExitUlpiOdm;

		NvOsDebugPrintf("turn modem on\n");
		ste_u3xx_turn_on_modem(&ste_u3xx_info);
	}
	return pDevice;

ExitUlpiOdm:
	if (pDevice)
		NvOdmOsFree(pDevice);
	return NULL;
}

void NvOdmUsbUlpiClose(NvOdmUsbUlpiHandle hOdmUlpi)
{
	if (hOdmUlpi) {
		NvOdmOsFree(hOdmUlpi);
		hOdmUlpi = NULL;
	}
}