/* * 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/gpio.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/usb/otg.h> #include "common.h" #include "devices-imx31.h" #include "hardware.h" #include "iomux-mx3.h" #include "ulpi.h" static unsigned int devboard_pins[] = { /* UART1 */ MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2, MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2, /* SDHC2 */ MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2, MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0, MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD, MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29, /* USB H1 */ MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM, MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP, MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB, MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND, MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12, /* SEL */ 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, }; #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR) #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW) static int devboard_sdhc2_get_ro(struct device *dev) { return !gpio_get_value(SDHC2_WP); } static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq, void *data) { int ret; ret = gpio_request(SDHC2_CD, "sdhc-detect"); if (ret) return ret; gpio_direction_input(SDHC2_CD); ret = gpio_request(SDHC2_WP, "sdhc-wp"); if (ret) goto err_gpio_free; gpio_direction_input(SDHC2_WP); ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "sdhc2-card-detect", data); if (ret) goto err_gpio_free_2; return 0; err_gpio_free_2: gpio_free(SDHC2_WP); err_gpio_free: gpio_free(SDHC2_CD); return ret; } static void devboard_sdhc2_exit(struct device *dev, void *data) { free_irq(gpio_to_irq(SDHC2_CD), data); gpio_free(SDHC2_WP); gpio_free(SDHC2_CD); } static const struct imxmmc_platform_data sdhc2_pdata __initconst = { .get_ro = devboard_sdhc2_get_ro, .init = devboard_sdhc2_init, .exit = devboard_sdhc2_exit, }; #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1) #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1) #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1) #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1) static void devboard_init_sel_gpios(void) { if (!gpio_request(SEL0, "sel0")) { gpio_direction_input(SEL0); gpio_export(SEL0, true); } if (!gpio_request(SEL1, "sel1")) { gpio_direction_input(SEL1); gpio_export(SEL1, true); } if (!gpio_request(SEL2, "sel2")) { gpio_direction_input(SEL2); gpio_export(SEL2, true); } if (!gpio_request(SEL3, "sel3")) { gpio_direction_input(SEL3); gpio_export(SEL3, true); } } #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \ PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU) static int devboard_usbh1_hw_init(struct platform_device *pdev) { mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true); mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG); mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG); mdelay(10); return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_SINGLE_UNI); } #define USBH1_VBUSEN_B IOMUX_TO_GPIO(MX31_PIN_NFRE_B) #define USBH1_MODE IOMUX_TO_GPIO(MX31_PIN_NFALE) static int devboard_isp1105_init(struct usb_phy *otg) { int ret = gpio_request(USBH1_MODE, "usbh1-mode"); if (ret) return ret; /* single ended */ gpio_direction_output(USBH1_MODE, 0); ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen"); if (ret) { gpio_free(USBH1_MODE); return ret; } gpio_direction_output(USBH1_VBUSEN_B, 1); return 0; } static int devboard_isp1105_set_vbus(struct usb_otg *otg, bool on) { if (on) gpio_set_value(USBH1_VBUSEN_B, 0); else gpio_set_value(USBH1_VBUSEN_B, 1); return 0; } static struct mxc_usbh_platform_data usbh1_pdata __initdata = { .init = devboard_usbh1_hw_init, .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL, }; static int __init devboard_usbh1_init(void) { struct usb_phy *phy; struct platform_device *pdev; phy = kzalloc(sizeof(*phy), GFP_KERNEL); if (!phy) return -ENOMEM; phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL); if (!phy->otg) { kfree(phy); return -ENOMEM; } phy->label = "ISP1105"; phy->init = devboard_isp1105_init; phy->otg->set_vbus = devboard_isp1105_set_vbus; usbh1_pdata.otg = phy; pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata); if (IS_ERR(pdev)) return PTR_ERR(pdev); return 0; } static const struct fsl_usb2_platform_data usb_pdata __initconst = { .operating_mode = FSL_USB2_DR_DEVICE, .phy_mode = FSL_USB2_PHY_ULPI, }; /* * system init for baseboard usage. Will be called by mx31moboard init. */ void __init mx31moboard_devboard_init(void) { printk(KERN_INFO "Initializing mx31devboard peripherals\n"); mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins), "devboard"); imx31_add_imx_uart1(&uart_pdata); imx31_add_mxc_mmc(1, &sdhc2_pdata); devboard_init_sel_gpios(); imx31_add_fsl_usb2_udc(&usb_pdata); devboard_usbh1_init(); }