arch/arm/mach-mx3/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/platform_device.h>
  19 #include <linux/slab.h>
  20 #include <linux/types.h>
  21
  22 #include <linux/usb/otg.h>
  23
  24 #include <mach/common.h>
  25 #include <mach/iomux-mx3.h>
  26 #include <mach/hardware.h>
  27 #include <mach/ulpi.h>
  28
  29 #include "devices-imx31.h"
  30 #include "devices.h"
  31
  32 static unsigned int devboard_pins[] = {
  33         /* UART1 */
  34         MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
  35         MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
  36         /* SDHC2 */
  37         MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
  38         MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
  39         MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
  40         MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
  41         /* USB H1 */
  42         MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
  43         MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
  44         MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
  45         MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
  46         MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
  47         /* SEL */
  48         MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
  49         MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
  50 };
  51
  52 static const struct imxuart_platform_data uart_pdata __initconst = {
  53         .flags = IMXUART_HAVE_RTSCTS,
  54 };
  55
  56 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
  57 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
  58
  59 static int devboard_sdhc2_get_ro(struct device *dev)
  60 {
  61         return !gpio_get_value(SDHC2_WP);
  62 }
  63
  64 static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
  65                 void *data)
  66 {
  67         int ret;
  68
  69         ret = gpio_request(SDHC2_CD, "sdhc-detect");
  70         if (ret)
  71                 return ret;
  72
  73         gpio_direction_input(SDHC2_CD);
  74
  75         ret = gpio_request(SDHC2_WP, "sdhc-wp");
  76         if (ret)
  77                 goto err_gpio_free;
  78         gpio_direction_input(SDHC2_WP);
  79
  80         ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
  81                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  82                 "sdhc2-card-detect", data);
  83         if (ret)
  84                 goto err_gpio_free_2;
  85
  86         return 0;
  87
  88 err_gpio_free_2:
  89         gpio_free(SDHC2_WP);
  90 err_gpio_free:
  91         gpio_free(SDHC2_CD);
  92
  93         return ret;
  94 }
  95
  96 static void devboard_sdhc2_exit(struct device *dev, void *data)
  97 {
  98         free_irq(gpio_to_irq(SDHC2_CD), data);
  99         gpio_free(SDHC2_WP);
 100         gpio_free(SDHC2_CD);
 101 }
 102
 103 static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
 104         .get_ro = devboard_sdhc2_get_ro,
 105         .init   = devboard_sdhc2_init,
 106         .exit   = devboard_sdhc2_exit,
 107 };
 108
 109 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
 110 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
 111 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
 112 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
 113
 114 static void devboard_init_sel_gpios(void)
 115 {
 116         if (!gpio_request(SEL0, "sel0")) {
 117                 gpio_direction_input(SEL0);
 118                 gpio_export(SEL0, true);
 119         }
 120
 121         if (!gpio_request(SEL1, "sel1")) {
 122                 gpio_direction_input(SEL1);
 123                 gpio_export(SEL1, true);
 124         }
 125
 126         if (!gpio_request(SEL2, "sel2")) {
 127                 gpio_direction_input(SEL2);
 128                 gpio_export(SEL2, true);
 129         }
 130
 131         if (!gpio_request(SEL3, "sel3")) {
 132                 gpio_direction_input(SEL3);
 133                 gpio_export(SEL3, true);
 134         }
 135 }
 136 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 137                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 138
 139 static int devboard_usbh1_hw_init(struct platform_device *pdev)
 140 {
 141         mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
 142
 143         mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
 144         mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
 145         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
 146         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
 147         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
 148         mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
 149         mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
 150         mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
 151
 152         return 0;
 153 }
 154
 155 #define USBH1_VBUSEN_B  IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 156 #define USBH1_MODE      IOMUX_TO_GPIO(MX31_PIN_NFALE)
 157
 158 static int devboard_isp1105_init(struct otg_transceiver *otg)
 159 {
 160         int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 161         if (ret)
 162                 return ret;
 163         /* single ended */
 164         gpio_direction_output(USBH1_MODE, 0);
 165
 166         ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
 167         if (ret) {
 168                 gpio_free(USBH1_MODE);
 169                 return ret;
 170         }
 171         gpio_direction_output(USBH1_VBUSEN_B, 1);
 172
 173         return 0;
 174 }
 175
 176
 177 static int devboard_isp1105_set_vbus(struct otg_transceiver *otg, bool on)
 178 {
 179         if (on)
 180                 gpio_set_value(USBH1_VBUSEN_B, 0);
 181         else
 182                 gpio_set_value(USBH1_VBUSEN_B, 1);
 183
 184         return 0;
 185 }
 186
 187 static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
 188         .init   = devboard_usbh1_hw_init,
 189         .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
 190         .flags  = MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_SINGLE_UNI,
 191 };
 192
 193 static int __init devboard_usbh1_init(void)
 194 {
 195         struct otg_transceiver *otg;
 196         struct platform_device *pdev;
 197
 198         otg = kzalloc(sizeof(*otg), GFP_KERNEL);
 199         if (!otg)
 200                 return -ENOMEM;
 201
 202         otg->label      = "ISP1105";
 203         otg->init       = devboard_isp1105_init;
 204         otg->set_vbus   = devboard_isp1105_set_vbus;
 205
 206         usbh1_pdata.otg = otg;
 207
 208         pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
 209         if (IS_ERR(pdev))
 210                 return PTR_ERR(pdev);
 211
 212         return 0;
 213 }
 214
 215
 216 static const struct fsl_usb2_platform_data usb_pdata __initconst = {
 217         .operating_mode = FSL_USB2_DR_DEVICE,
 218         .phy_mode       = FSL_USB2_PHY_ULPI,
 219 };
 220
 221 /*
 222  * system init for baseboard usage. Will be called by mx31moboard init.
 223  */
 224 void __init mx31moboard_devboard_init(void)
 225 {
 226         printk(KERN_INFO "Initializing mx31devboard peripherals\n");
 227
 228         mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins),
 229                 "devboard");
 230
 231         imx31_add_imx_uart1(&uart_pdata);
 232
 233         imx31_add_mxc_mmc(1, &sdhc2_pdata);
 234
 235         devboard_init_sel_gpios();
 236
 237         imx31_add_fsl_usb2_udc(&usb_pdata);
 238
 239         devboard_usbh1_init();
 240 }