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/*
* Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
*
* 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.
*/
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include "board-mx31moboard.h"
#include "common.h"
#include "devices-imx31.h"
#include "ehci.h"
#include "hardware.h"
#include "iomux-mx3.h"
#include "ulpi.h"
static unsigned int smartbot_pins[] = {
/* UART1 */
MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
/* ENABLES */
MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
};
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
static const struct fsl_usb2_platform_data usb_pdata __initconst = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_ULPI,
};
#if defined(CONFIG_USB_ULPI)
static int smartbot_otg_init(struct platform_device *pdev)
{
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
}
static struct mxc_usbh_platform_data otg_host_pdata __initdata = {
.init = smartbot_otg_init,
.portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
};
static int __init smartbot_otg_host_init(void)
{
struct platform_device *pdev;
otg_host_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
ULPI_OTG_DRVVBUS_EXT);
if (!otg_host_pdata.otg)
return -ENODEV;
pdev = imx31_add_mxc_ehci_otg(&otg_host_pdata);
return PTR_ERR_OR_ZERO(pdev);
}
#else
static inline int smartbot_otg_host_init(void) { return 0; }
#endif
#define POWER_EN IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
#define DSPIC_RST_B IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
#define TRSLAT_RST_B IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
#define TRSLAT_SRC_CHOICE IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
static void smartbot_resets_init(void)
{
if (!gpio_request(POWER_EN, "power-enable")) {
gpio_direction_output(POWER_EN, 0);
gpio_export(POWER_EN, false);
}
if (!gpio_request(DSPIC_RST_B, "dspic-rst")) {
gpio_direction_output(DSPIC_RST_B, 0);
gpio_export(DSPIC_RST_B, false);
}
if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
gpio_direction_output(TRSLAT_RST_B, 0);
gpio_export(TRSLAT_RST_B, false);
}
if (!gpio_request(TRSLAT_SRC_CHOICE, "translator-src-choice")) {
gpio_direction_output(TRSLAT_SRC_CHOICE, 0);
gpio_export(TRSLAT_SRC_CHOICE, false);
}
}
/*
* system init for baseboard usage. Will be called by mx31moboard init.
*/
void __init mx31moboard_smartbot_init(int board)
{
printk(KERN_INFO "Initializing mx31smartbot peripherals\n");
mxc_iomux_setup_multiple_pins(smartbot_pins, ARRAY_SIZE(smartbot_pins),
"smartbot");
imx31_add_imx_uart1(&uart_pdata);
switch (board) {
case MX31SMARTBOT:
imx31_add_fsl_usb2_udc(&usb_pdata);
break;
case MX31EYEBOT:
smartbot_otg_host_init();
break;
default:
printk(KERN_WARNING "Unknown board %d, USB OTG not initialized",
board);
}
smartbot_resets_init();
}
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