/* * 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(); }