arch/arm/mach-imx/mx31moboard-devboard.c

   1 /*
   2  * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/gpio.h>
  16 #include <linux/init.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/delay.h>
  19 #include <linux/platform_device.h>
  20 #include <linux/slab.h>
  21 #include <linux/types.h>
  22
  23 #include <linux/usb/otg.h>
  24
  25 #include "common.h"
  26 #include "devices-imx31.h"
  27 #include "hardware.h"
  28 #include "iomux-mx3.h"
  29 #include "ulpi.h"
  30
  31 static unsigned int devboard_pins[] = {
  32         /* UART1 */
  33         MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
  34         MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
  35         /* SDHC2 */
  36         MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
  37         MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
  38         MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
  39         MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
  40         /* USB H1 */
  41         MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
  42         MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
  43         MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
  44         MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
  45         MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
  46         /* SEL */
  47         MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
  48         MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
  49 };
  50
  51 static const struct imxuart_platform_data uart_pdata __initconst = {
  52         .flags = IMXUART_HAVE_RTSCTS,
  53 };
  54
  55 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
  56 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
  57
  58 static int devboard_sdhc2_get_ro(struct device *dev)
  59 {
  60         return !gpio_get_value(SDHC2_WP);
  61 }
  62
  63 static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
  64                 void *data)
  65 {
  66         int ret;
  67
  68         ret = gpio_request(SDHC2_CD, "sdhc-detect");
  69         if (ret)
  70                 return ret;
  71
  72         gpio_direction_input(SDHC2_CD);
  73
  74         ret = gpio_request(SDHC2_WP, "sdhc-wp");
  75         if (ret)
  76                 goto err_gpio_free;
  77         gpio_direction_input(SDHC2_WP);
  78
  79         ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
  80                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  81                 "sdhc2-card-detect", data);
  82         if (ret)
  83                 goto err_gpio_free_2;
  84
  85         return 0;
  86
  87 err_gpio_free_2:
  88         gpio_free(SDHC2_WP);
  89 err_gpio_free:
  90         gpio_free(SDHC2_CD);
  91
  92         return ret;
  93 }
  94
  95 static void devboard_sdhc2_exit(struct device *dev, void *data)
  96 {
  97         free_irq(gpio_to_irq(SDHC2_CD), data);
  98         gpio_free(SDHC2_WP);
  99         gpio_free(SDHC2_CD);
 100 }
 101
 102 static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
 103         .get_ro = devboard_sdhc2_get_ro,
 104         .init   = devboard_sdhc2_init,
 105         .exit   = devboard_sdhc2_exit,
 106 };
 107
 108 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
 109 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
 110 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
 111 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
 112
 113 static void devboard_init_sel_gpios(void)
 114 {
 115         if (!gpio_request(SEL0, "sel0")) {
 116                 gpio_direction_input(SEL0);
 117                 gpio_export(SEL0, true);
 118         }
 119
 120         if (!gpio_request(SEL1, "sel1")) {
 121                 gpio_direction_input(SEL1);
 122                 gpio_export(SEL1, true);
 123         }
 124
 125         if (!gpio_request(SEL2, "sel2")) {
 126                 gpio_direction_input(SEL2);
 127                 gpio_export(SEL2, true);
 128         }
 129
 130         if (!gpio_request(SEL3, "sel3")) {
 131                 gpio_direction_input(SEL3);
 132                 gpio_export(SEL3, true);
 133         }
 134 }
 135 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 136                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 137
 138 static int devboard_usbh1_hw_init(struct platform_device *pdev)
 139 {
 140         mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
 141
 142         mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
 143         mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
 144         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
 145         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
 146         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
 147         mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
 148         mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
 149         mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
 150
 151         mdelay(10);
 152
 153         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
 154                         MXC_EHCI_INTERFACE_SINGLE_UNI);
 155 }
 156
 157 #define USBH1_VBUSEN_B  IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 158 #define USBH1_MODE      IOMUX_TO_GPIO(MX31_PIN_NFALE)
 159
 160 static int devboard_isp1105_init(struct usb_phy *otg)
 161 {
 162         int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 163         if (ret)
 164                 return ret;
 165         /* single ended */
 166         gpio_direction_output(USBH1_MODE, 0);
 167
 168         ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
 169         if (ret) {
 170                 gpio_free(USBH1_MODE);
 171                 return ret;
 172         }
 173         gpio_direction_output(USBH1_VBUSEN_B, 1);
 174
 175         return 0;
 176 }
 177
 178
 179 static int devboard_isp1105_set_vbus(struct usb_otg *otg, bool on)
 180 {
 181         if (on)
 182                 gpio_set_value(USBH1_VBUSEN_B, 0);
 183         else
 184                 gpio_set_value(USBH1_VBUSEN_B, 1);
 185
 186         return 0;
 187 }
 188
 189 static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
 190         .init   = devboard_usbh1_hw_init,
 191         .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
 192 };
 193
 194 static int __init devboard_usbh1_init(void)
 195 {
 196         struct usb_phy *phy;
 197         struct platform_device *pdev;
 198
 199         phy = kzalloc(sizeof(*phy), GFP_KERNEL);
 200         if (!phy)
 201                 return -ENOMEM;
 202
 203         phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
 204         if (!phy->otg) {
 205                 kfree(phy);
 206                 return -ENOMEM;
 207         }
 208
 209         phy->label      = "ISP1105";
 210         phy->init       = devboard_isp1105_init;
 211         phy->otg->set_vbus      = devboard_isp1105_set_vbus;
 212
 213         usbh1_pdata.otg = phy;
 214
 215         pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
 216         if (IS_ERR(pdev))
 217                 return PTR_ERR(pdev);
 218
 219         return 0;
 220 }
 221
 222
 223 static const struct fsl_usb2_platform_data usb_pdata __initconst = {
 224         .operating_mode = FSL_USB2_DR_DEVICE,
 225         .phy_mode       = FSL_USB2_PHY_ULPI,
 226 };
 227
 228 /*
 229  * system init for baseboard usage. Will be called by mx31moboard init.
 230  */
 231 void __init mx31moboard_devboard_init(void)
 232 {
 233         printk(KERN_INFO "Initializing mx31devboard peripherals\n");
 234
 235         mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins),
 236                 "devboard");
 237
 238         imx31_add_imx_uart1(&uart_pdata);
 239
 240         imx31_add_mxc_mmc(1, &sdhc2_pdata);
 241
 242         devboard_init_sel_gpios();
 243
 244         imx31_add_fsl_usb2_udc(&usb_pdata);
 245
 246         devboard_usbh1_init();
 247 }